6FSZ

Structure of the nuclear RNA exosome


Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
K [auth JJ]SCOP2B SuperfamilyNucleic acid-binding proteins8037618 3000135 SCOP2B (2022-06-29)
K [auth JJ]SCOP2B SuperfamilyNucleic acid-binding proteins8037616 3000135 SCOP2B (2022-06-29)
K [auth JJ]SCOP2B SuperfamilyNucleic acid-binding proteins8037614 3000135 SCOP2B (2022-06-29)
L [auth KK]SCOP2B SuperfamilyRibonuclease H-like8042228 3000143 SCOP2B (2022-06-29)
L [auth KK]SCOP2B SuperfamilyRrp6-Rrp47 interacting regions-like8055988 3002328 SCOP2B (2022-06-29)
M [auth LL]SCOP2B SuperfamilyRrp6-Rrp47 interacting regions-like8055987 3002328 SCOP2B (2022-06-29)
H [auth GG]SCOP2B SuperfamilyEukaryotic type KH-domain (KH-domain type I)8034657 3001023 SCOP2B (2022-06-29)
H [auth GG]SCOP2B SuperfamilyNucleic acid-binding proteins8034656 3000135 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
D [auth CC]PF01138e6fszCC1 A: a+b two layersX: Ribosomal protein S5 domain 2-like (From Topology)H: Ribosomal protein S5 domain 2-like (From Topology)T: Ribosomal protein S5 domain 2-likeF: PF01138ECOD (1.6)
D [auth CC]F_UNCLASSIFIEDe6fszCC2 A: a+b two layersX: Ribonuclease PH domain 2-likeH: Ribonuclease PH domain 2 (From Topology)T: Ribonuclease PH domain 2F: F_UNCLASSIFIEDECOD (1.6)
G [auth FF]PF01138e6fszFF2 A: a+b two layersX: Ribosomal protein S5 domain 2-like (From Topology)H: Ribosomal protein S5 domain 2-like (From Topology)T: Ribosomal protein S5 domain 2-likeF: PF01138ECOD (1.6)
G [auth FF]F_UNCLASSIFIEDe6fszFF1 A: a+b two layersX: Ribonuclease PH domain 2-likeH: Ribonuclease PH domain 2 (From Topology)T: Ribonuclease PH domain 2F: F_UNCLASSIFIEDECOD (1.6)
I [auth HH]PF21266e6fszHH1 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: PF21266ECOD (1.6)
I [auth HH]PF15985e6fszHH2 A: a+b two layersX: Alpha-lytic protease prodomain-likeH: KH-domainsT: Eukaryotic type KH-domain (KH-domain type I)F: PF15985ECOD (1.6)
I [auth HH]PF14382e6fszHH3 A: a+b complex topologyX: alpha/beta-Hammerhead/Barrel-sandwich hybridH: alpha/beta-Hammerhead/Barrel-sandwich hybridT: Ribosomal L27 proteinF: PF14382ECOD (1.6)
J [auth II]PF10447e6fszII1 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: PF10447ECOD (1.6)
J [auth II]PF21551e6fszII2 A: a+b complex topologyX: alpha/beta-Hammerhead/Barrel-sandwich hybridH: alpha/beta-Hammerhead/Barrel-sandwich hybridT: Ribosomal L27 proteinF: PF21551ECOD (1.6)
K [auth JJ]PF17215e6fszJJ3 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: PF17215ECOD (1.6)
K [auth JJ]PF17216e6fszJJ2 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: PF17216ECOD (1.6)
K [auth JJ]PF17849e6fszJJ5 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: PF17849ECOD (1.6)
K [auth JJ]PF00773e6fszJJ4 A: beta barrelsX: OB-foldH: RNB domain-like (From Topology)T: RNB domain-likeF: PF00773ECOD (1.6)
K [auth JJ]PF13638e6fszJJ1 A: a/b three-layered sandwichesX: HAD domain-likeH: HAD domain-relatedT: PIN domain-likeF: PF13638ECOD (1.6)
M [auth LL]PF04000e6fszLL1 A: extended segmentsX: Exosome complex protein LRP1 (From Topology)H: Exosome complex protein LRP1 (From Topology)T: Exosome complex protein LRP1F: PF04000ECOD (1.6)
N [auth MM]PF13234e6fszMM5 A: beta barrelsX: SH3H: SH3T: SH3F: PF13234ECOD (1.6)
N [auth MM]F_UNCLASSIFIEDe6fszMM4 A: alpha arraysX: HTHH: HTHT: wingedF: F_UNCLASSIFIEDECOD (1.6)
N [auth MM]PF08148e6fszMM6 A: alpha arraysX: Sec63 N-terminal subdomain-like (From Topology)H: Sec63 N-terminal subdomain-like (From Topology)T: Sec63 N-terminal subdomain-likeF: PF08148ECOD (1.6)
N [auth MM]PF00270e6fszMM3 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: PF00270ECOD (1.6)
N [auth MM]PF00271e6fszMM2 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: PF00271ECOD (1.6)
N [auth MM]PF13234e6fszMM1 A: extended segmentsX: Helical arch in Ski2-like helicases (From Topology)H: Helical arch in Ski2-like helicases (From Topology)T: Helical arch in Ski2-like helicasesF: PF13234ECOD (1.6)
B [auth AA]PF01138e6fszAA1 A: a+b two layersX: Ribosomal protein S5 domain 2-like (From Topology)H: Ribosomal protein S5 domain 2-like (From Topology)T: Ribosomal protein S5 domain 2-likeF: PF01138ECOD (1.6)
B [auth AA]PF03725e6fszAA2 A: a+b two layersX: Ribonuclease PH domain 2-likeH: Ribonuclease PH domain 2 (From Topology)T: Ribonuclease PH domain 2F: PF03725ECOD (1.6)
C [auth BB]PF01138e6fszBB1 A: a+b two layersX: Ribosomal protein S5 domain 2-like (From Topology)H: Ribosomal protein S5 domain 2-like (From Topology)T: Ribosomal protein S5 domain 2-likeF: PF01138ECOD (1.6)
C [auth BB]PF03725e6fszBB2 A: a+b two layersX: Ribonuclease PH domain 2-likeH: Ribonuclease PH domain 2 (From Topology)T: Ribonuclease PH domain 2F: PF03725ECOD (1.6)
E [auth DD]PF01138e6fszDD1 A: a+b two layersX: Ribosomal protein S5 domain 2-like (From Topology)H: Ribosomal protein S5 domain 2-like (From Topology)T: Ribosomal protein S5 domain 2-likeF: PF01138ECOD (1.6)
E [auth DD]PF03725e6fszDD2 A: a+b two layersX: Ribonuclease PH domain 2-likeH: Ribonuclease PH domain 2 (From Topology)T: Ribonuclease PH domain 2F: PF03725ECOD (1.6)
F [auth EE]F_UNCLASSIFIEDe6fszEE2 A: a+b two layersX: Ribosomal protein S5 domain 2-like (From Topology)H: Ribosomal protein S5 domain 2-like (From Topology)T: Ribosomal protein S5 domain 2-likeF: F_UNCLASSIFIEDECOD (1.6)
F [auth EE]F_UNCLASSIFIEDe6fszEE1 A: a+b two layersX: Ribonuclease PH domain 2-likeH: Ribonuclease PH domain 2 (From Topology)T: Ribonuclease PH domain 2F: F_UNCLASSIFIEDECOD (1.6)
H [auth GG]PF21262e6fszGG3 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: PF21262ECOD (1.6)
H [auth GG]PF15985e6fszGG2 A: a+b two layersX: Alpha-lytic protease prodomain-likeH: KH-domainsT: Eukaryotic type KH-domain (KH-domain type I)F: PF15985ECOD (1.6)
H [auth GG]PF18311e6fszGG1 A: a+b complex topologyX: alpha/beta-Hammerhead/Barrel-sandwich hybridH: alpha/beta-Hammerhead/Barrel-sandwich hybridT: Ribosomal L27 proteinF: PF18311ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
D [auth CC]PF011383' exoribonuclease family, domain 1 (RNase_PH)3' exoribonuclease family, domain 1This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of ...This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of the domain. PNPase is involved in mRNA degradation in a 3'-5' direction. The exosome is a 3'-5' exoribonuclease complex that is required for 3' processing of the 5.8S rRNA. Three of its five protein components, Swiss:P46948 Swiss:Q12277 and Swiss:P25359 contain a copy of this domain [1]. Swiss:Q10205, a hypothetical protein from S. pombe appears to belong to an uncharacterised subfamily. This subfamily is found in both eukaryotes and archaebacteria.
Domain
G [auth FF]PF011383' exoribonuclease family, domain 1 (RNase_PH)3' exoribonuclease family, domain 1This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of ...This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of the domain. PNPase is involved in mRNA degradation in a 3'-5' direction. The exosome is a 3'-5' exoribonuclease complex that is required for 3' processing of the 5.8S rRNA. Three of its five protein components, Swiss:P46948 Swiss:Q12277 and Swiss:P25359 contain a copy of this domain [1]. Swiss:Q10205, a hypothetical protein from S. pombe appears to belong to an uncharacterised subfamily. This subfamily is found in both eukaryotes and archaebacteria.
Domain
I [auth HH]PF21266RRP4, S1 domain (RRP4_S1)RRP4, S1 domainExosome complex component RRP4 is a non-catalytic component of the RNA exosome complex which has 3'->5' exoribonuclease activity and participates in a multitude of cellular RNA processing and degradation events. It consists of a N-terminal beta-sandw ...Exosome complex component RRP4 is a non-catalytic component of the RNA exosome complex which has 3'->5' exoribonuclease activity and participates in a multitude of cellular RNA processing and degradation events. It consists of a N-terminal beta-sandwich hybrid domain (Pfam:PF14382), a central S1 domain and a C-terminal KH domain (Pfam:PF15985). This entry represents the S1 RNA binding domain, which has an OB fold [1,2].
Domain
I [auth HH]PF14382Exosome complex exonuclease RRP4 N-terminal region (ECR1_N)Exosome complex exonuclease RRP4 N-terminal regionECR1_N is an N-terminal region of the exosome complex exonuclease RRP proteins. It is a G-rich domain which structurally is a rudimentary single hybrid fold with a permuted topology.Domain
I [auth HH]PF15985KH domain (KH_6)KH domainKH motifs bind RNA in vitro. Auto-antibodies to Nova, a KH domain protein, cause para-neoplastic opsoclonus ataxia.Domain
J [auth II]PF21551Exosome complex component CSL4, N-terminal domain (CSL4_N)Exosome complex component CSL4, N-terminal domainThis domain is found at the N-terminal end of Exosome complex component CSL4 from Saccharomyces cerevisiae, a non-catalytic component of the RNA exosome complex which has 3'->5' exoribonuclease activity and participates in a multitude of cellular RNA ...This domain is found at the N-terminal end of Exosome complex component CSL4 from Saccharomyces cerevisiae, a non-catalytic component of the RNA exosome complex which has 3'->5' exoribonuclease activity and participates in a multitude of cellular RNA processing and degradation events [1-4].
Domain
J [auth II]PF10447Exosome component EXOSC1/CSL4 (EXOSC1)Exosome component EXOSC1/CSL4This family of proteins are components of the exosome 3'->5' exoribonuclease complex. The exosome mediates degradation of unstable mRNAs that contain AU-rich elements (AREs) within their 3' untranslated regions [1].Domain
K [auth JJ]PF13638PIN domain (PIN_4)PIN domainMembers of this family of bacterial domains are predicted to be RNases (from similarities to 5'-exonucleases).Domain
K [auth JJ]PF17849Dis3-like cold-shock domain 2 (CSD2) (OB_Dis3)Dis3-like cold-shock domain 2 (CSD2)This domain has an OB fold and is found in the Dis3l2 protein [1]. This domain along with CSD1 binds to RNA.Domain
K [auth JJ]PF17215S1 domain (Rrp44_S1)S1 domainThis domain corresponds to the S1 domain found at the C-terminus of ribonucleases such as yeast Rrp44 [1].Domain
K [auth JJ]PF17216Rrp44-like cold shock domain (Rrp44_CSD1)Rrp44-like cold shock domain- Domain
K [auth JJ]PF00773RNB domain (RNB)RNB domainThis domain is the catalytic domain of ribonuclease II [1].Domain
L [auth KK]PF016123'-5' exonuclease (DNA_pol_A_exo1)3'-5' exonucleaseThis domain is responsible for the 3'-5' exonuclease proofreading activity of E. coli DNA polymerase I (polI) and other enzymes, it catalyses the hydrolysis of unpaired or mismatched nucleotides. This domain consists of the amino-terminal half of the ...This domain is responsible for the 3'-5' exonuclease proofreading activity of E. coli DNA polymerase I (polI) and other enzymes, it catalyses the hydrolysis of unpaired or mismatched nucleotides. This domain consists of the amino-terminal half of the Klenow fragment in E. coli polI it is also found in the Werner syndrome helicase (WRN), focus forming activity 1 protein (FFA-1) and ribonuclease D (RNase D). Werner syndrome is a human genetic disorder causing premature aging; the WRN protein has helicase activity in the 3'-5' direction [4,5]. The FFA-1 protein is required for formation of a replication foci and also has helicase activity; it is a homologue of the WRN protein [3]. RNase D is a 3'-5' exonuclease involved in tRNA processing. Also found in this family is the autoantigen PM/Scl thought to be involved in polymyositis-scleroderma overlap syndrome.
Domain
L [auth KK]PF08066PMC2NT (NUC016) domain (PMC2NT)PMC2NT (NUC016) domainThis domain is found at the N-terminus of 3'-5' exonucleases with HRDC domains, and also in putative exosome components [1].Domain
M [auth LL]PF04000Sas10/Utp3/C1D family (Sas10_Utp3)Sas10/Utp3/C1D family- Family
N [auth MM]PF08148DSHCT (NUC185) domain (DSHCT)DSHCT (NUC185) domainThis C terminal domain is found in DOB1/SK12/helY-like DEAD box helicases [1].Domain
N [auth MM]PF00270DEAD/DEAH box helicase (DEAD)DEAD/DEAH box helicaseMembers of this family include the DEAD and DEAH box helicases. Helicases are involved in unwinding nucleic acids. The DEAD box helicases are involved in various aspects of RNA metabolism, including nuclear transcription, pre mRNA splicing, ribosome ...Members of this family include the DEAD and DEAH box helicases. Helicases are involved in unwinding nucleic acids. The DEAD box helicases are involved in various aspects of RNA metabolism, including nuclear transcription, pre mRNA splicing, ribosome biogenesis, nucleocytoplasmic transport, translation, RNA decay and organellar gene expression.
Domain
N [auth MM]PF00271Helicase conserved C-terminal domain (Helicase_C)Helicase conserved C-terminal domainThe Prosite family is restricted to DEAD/H helicases, whereas this domain family is found in a wide variety of helicases and helicase related proteins. It may be that this is not an autonomously folding unit, but an integral part of the helicase.Domain
N [auth MM]PF21408Exosome RNA helicase MTR4-like, stalk (MTR4-like_stalk)Exosome RNA helicase MTR4-like, stalkExosome RNA helicase MTR4 is a conserved RNA helicase that functions together with the nuclear exosome and it is involved in processing of structured RNAs, including snRNAs and snoRNAs. It also plays a role in nuclear RNA surveillance pathways involv ...Exosome RNA helicase MTR4 is a conserved RNA helicase that functions together with the nuclear exosome and it is involved in processing of structured RNAs, including snRNAs and snoRNAs. It also plays a role in nuclear RNA surveillance pathways involving the so-called TRAMP complex [1,2]. It contains an arch domain, required for proper 5.8S rRNA processing, and appears to function independently of canonical helicase activity [3]. The arch domain comprises an helical stalk/elbow that flanks a KOW module which adopts a beta-barrel fold. This entry represents the helical stalk found at the N-terminal of KOW beta-barrel from MTR4 [1-3]. This entry also includes Ski2-like helicases which have an overall similar structure to MTR4 proteins. However, Ski2 from yeast does not have the KOW motif and the beta-barrel is tightly packed against the helical stalk [3].
Domain
N [auth MM]PF13234Mtr4-like, beta-barrel domain (MTR4_beta-barrel)Mtr4-like, beta-barrel domainExosome RNA helicase Mtr4 is a essential RNA helicase, and is an exosome-activating cofactor. It functions together with the nuclear exosome being involved in processing of structured RNAs, including snRNAs and snoRNAs. It also plays a role in nuclea ...Exosome RNA helicase Mtr4 is a essential RNA helicase, and is an exosome-activating cofactor. It functions together with the nuclear exosome being involved in processing of structured RNAs, including snRNAs and snoRNAs. It also plays a role in nuclear RNA surveillance pathways involving the so-called TRAMP complex [1,2,3]. It contains an arch domain, required for proper 5.8S rRNA processing, and appears to function independently of canonical helicase activity [3]. The arch domain comprises an helical stalk/elbow that flanks a KOW module which adopts a beta-barrel fold. Thsi entry represents the beta-barrel of MTR4 and related Ski2-like helicases. Ski2 from yeast has an overall similar structure to MTR4 proteins. However, it does not have the KOW motif [4] and it is not included in this entry.
Domain
O [auth NN]PF10175M-phase phosphoprotein 6 (MPP6)M-phase phosphoprotein 6- Family
B [auth AA]PF037253' exoribonuclease family, domain 2 (RNase_PH_C)3' exoribonuclease family, domain 2This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of ...This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of the domain. PNPase is involved in mRNA degradation in a 3'-5' direction. The exosome is a 3'-5' exoribonuclease complex that is required for 3' processing of the 5.8S rRNA. Three of its five protein components, Swiss:P46948 Swiss:Q12277 and Swiss:P25359 contain a copy of this domain [1]. Swiss:Q10205, a hypothetical protein from S. pombe appears to belong to an uncharacterised subfamily. This subfamily is found in both eukaryotes and archaebacteria.
Domain
B [auth AA]PF011383' exoribonuclease family, domain 1 (RNase_PH)3' exoribonuclease family, domain 1This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of ...This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of the domain. PNPase is involved in mRNA degradation in a 3'-5' direction. The exosome is a 3'-5' exoribonuclease complex that is required for 3' processing of the 5.8S rRNA. Three of its five protein components, Swiss:P46948 Swiss:Q12277 and Swiss:P25359 contain a copy of this domain [1]. Swiss:Q10205, a hypothetical protein from S. pombe appears to belong to an uncharacterised subfamily. This subfamily is found in both eukaryotes and archaebacteria.
Domain
C [auth BB]PF037253' exoribonuclease family, domain 2 (RNase_PH_C)3' exoribonuclease family, domain 2This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of ...This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of the domain. PNPase is involved in mRNA degradation in a 3'-5' direction. The exosome is a 3'-5' exoribonuclease complex that is required for 3' processing of the 5.8S rRNA. Three of its five protein components, Swiss:P46948 Swiss:Q12277 and Swiss:P25359 contain a copy of this domain [1]. Swiss:Q10205, a hypothetical protein from S. pombe appears to belong to an uncharacterised subfamily. This subfamily is found in both eukaryotes and archaebacteria.
Domain
C [auth BB]PF011383' exoribonuclease family, domain 1 (RNase_PH)3' exoribonuclease family, domain 1This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of ...This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of the domain. PNPase is involved in mRNA degradation in a 3'-5' direction. The exosome is a 3'-5' exoribonuclease complex that is required for 3' processing of the 5.8S rRNA. Three of its five protein components, Swiss:P46948 Swiss:Q12277 and Swiss:P25359 contain a copy of this domain [1]. Swiss:Q10205, a hypothetical protein from S. pombe appears to belong to an uncharacterised subfamily. This subfamily is found in both eukaryotes and archaebacteria.
Domain
E [auth DD]PF037253' exoribonuclease family, domain 2 (RNase_PH_C)3' exoribonuclease family, domain 2This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of ...This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of the domain. PNPase is involved in mRNA degradation in a 3'-5' direction. The exosome is a 3'-5' exoribonuclease complex that is required for 3' processing of the 5.8S rRNA. Three of its five protein components, Swiss:P46948 Swiss:Q12277 and Swiss:P25359 contain a copy of this domain [1]. Swiss:Q10205, a hypothetical protein from S. pombe appears to belong to an uncharacterised subfamily. This subfamily is found in both eukaryotes and archaebacteria.
Domain
E [auth DD]PF011383' exoribonuclease family, domain 1 (RNase_PH)3' exoribonuclease family, domain 1This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of ...This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of the domain. PNPase is involved in mRNA degradation in a 3'-5' direction. The exosome is a 3'-5' exoribonuclease complex that is required for 3' processing of the 5.8S rRNA. Three of its five protein components, Swiss:P46948 Swiss:Q12277 and Swiss:P25359 contain a copy of this domain [1]. Swiss:Q10205, a hypothetical protein from S. pombe appears to belong to an uncharacterised subfamily. This subfamily is found in both eukaryotes and archaebacteria.
Domain
H [auth GG]PF18311Exosome complex exonuclease Rrp40 N-terminal domain (Rrp40_N)Exosome complex exonuclease Rrp40 N-terminal domainThis is the N-terminal domain of Rrp40 of the exosome complex present in Saccharomyces cerevisiae. The RNA exosome complex is responsible for degrading RNA molecules in the 3' to 5' direction. Rrp40 is a 'cap' protein and binds the RNase PH barrel on ...This is the N-terminal domain of Rrp40 of the exosome complex present in Saccharomyces cerevisiae. The RNA exosome complex is responsible for degrading RNA molecules in the 3' to 5' direction. Rrp40 is a 'cap' protein and binds the RNase PH barrel on the opposite side from the S1/KH ring. The N-terminal domain of Rrp44 forms a long beta-hairpin that is wedged in between Rrp41-Rrp42 and approaches the N terminus of the cap protein Rrp4 [1]. This domain adopts a beta- sandwich hybrid structure.
Domain
H [auth GG]PF21262Exosome complex component RRP40, S1 domain (RRP40_S1)Exosome complex component RRP40, S1 domainRRP40 is a non-catalytic component of the RNA exosome complex which has 3'->5' exoribonuclease activity and participates in a multitude of cellular RNA processing and degradation events. It consists of a N-terminal beta-sandwich hybrid domain (Pfam:P ...RRP40 is a non-catalytic component of the RNA exosome complex which has 3'->5' exoribonuclease activity and participates in a multitude of cellular RNA processing and degradation events. It consists of a N-terminal beta-sandwich hybrid domain (Pfam:PF21261), a central S1 domain and a C-terminal KH domain (Pfam:PF15985). This entry represents the S1 RNA binding domain, which has an OB fold [1-3].
Domain
H [auth GG]PF15985KH domain (KH_6)KH domainKH motifs bind RNA in vitro. Auto-antibodies to Nova, a KH domain protein, cause para-neoplastic opsoclonus ataxia.Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A [auth 2]RNA (5'-R(P*AP*AP*AP*AP*UP*UP*UP*AP*AP*AP*UP*UP*UP*UP*UP*UP*UP*UP*UP*UP*UP*UP*U)-3')---
D [auth CC]Exosome complex component RRP43
G [auth FF]Exosome complex component MTR3
I [auth HH]Exosome complex component RRP4
J [auth II]Exosome complex component CSL4
K [auth JJ]Exosome complex exonuclease DIS3
L [auth KK]Exosome complex exonuclease RRP6
M [auth LL]Exosome complex protein LRP1
N [auth MM]ATP-dependent RNA helicase DOB1
O [auth NN]M-phase phosphoprotein 6 homolog,M-phase phosphoprotein 6 homolog,Nuclear exosome-associated RNA binding protein,M-phase phosphoprotein 6 homolog
B [auth AA]Exosome complex component RRP45
C [auth BB]Exosome complex component SKI6
E [auth DD]Exosome complex component RRP46
F [auth EE]Exosome complex component RRP42
H [auth GG]Exosome complex component RRP40

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
D [auth CC]IPR027408PNPase/RNase PH domain superfamilyHomologous Superfamily
D [auth CC]IPR020568Ribosomal protein uS5 domain 2-type superfamilyHomologous Superfamily
D [auth CC]IPR001247Exoribonuclease, phosphorolytic domain 1Domain
G [auth FF]IPR027408PNPase/RNase PH domain superfamilyHomologous Superfamily
G [auth FF]IPR001247Exoribonuclease, phosphorolytic domain 1Domain
G [auth FF]IPR020568Ribosomal protein uS5 domain 2-type superfamilyHomologous Superfamily
I [auth HH]IPR048565RRP4, S1 domainDomain
I [auth HH]IPR036612K Homology domain, type 1 superfamilyHomologous Superfamily
I [auth HH]IPR025721Exosome complex component, N-terminal domainDomain
I [auth HH]IPR012340Nucleic acid-binding, OB-foldHomologous Superfamily
I [auth HH]IPR026699Exosome complex RNA-binding protein 1/RRP40/RRP4Family
I [auth HH]IPR004088K Homology domain, type 1Domain
J [auth II]IPR019495Exosome complex component CSL4, C-terminalDomain
J [auth II]IPR039771Exosome complex component Csl4Family
J [auth II]IPR012340Nucleic acid-binding, OB-foldHomologous Superfamily
J [auth II]IPR048626Exosome complex component CSL4, N-terminal domainDomain
K [auth JJ]IPR041505Dis3-like cold-shock domain 2Domain
K [auth JJ]IPR003029S1 domainDomain
K [auth JJ]IPR022966Ribonuclease II/R, conserved siteConserved Site
K [auth JJ]IPR033770Exosome complex exonuclease RRP44, S1 domainDomain
K [auth JJ]IPR033771Rrp44-like cold shock domainDomain
K [auth JJ]IPR002716PIN domainDomain
K [auth JJ]IPR001900Ribonuclease II/RDomain
K [auth JJ]IPR029060PIN-like domain superfamilyHomologous Superfamily
K [auth JJ]IPR012340Nucleic acid-binding, OB-foldHomologous Superfamily
L [auth KK]IPR036397Ribonuclease H superfamilyHomologous Superfamily
L [auth KK]IPR002121HRDC domainDomain
L [auth KK]IPR012588Exosome-associated factor Rrp6, N-terminalDomain
L [auth KK]IPR012337Ribonuclease H-like superfamilyHomologous Superfamily
L [auth KK]IPR045092Exosome complex exonuclease Rrp6-likeFamily
L [auth KK]IPR0025623'-5' exonuclease domainDomain
L [auth KK]IPR049559Rrp6-like, 3'-5' exonuclease domainDomain
L [auth KK]IPR010997HRDC-like superfamilyHomologous Superfamily
L [auth KK]IPR044876HRDC domain superfamilyHomologous Superfamily
M [auth LL]IPR011082Exosome-associated factor Rrp47/DNA strand repair C1DFamily
M [auth LL]IPR007146Sas10/Utp3/C1DFamily
N [auth MM]IPR048392Exosome RNA helicase MTR4-like, stalkDomain
N [auth MM]IPR012961ATP-dependent RNA helicase Ski2/MTR4, C-terminalDomain
N [auth MM]IPR025696Exosome RNA helicase MTR4-like, beta-barrel domainDomain
N [auth MM]IPR016438ATP-dependent RNA helicase SKI2-likeFamily
N [auth MM]IPR011545DEAD/DEAH box helicase domainDomain
N [auth MM]IPR011254Prismane-like superfamilyHomologous Superfamily
N [auth MM]IPR027417P-loop containing nucleoside triphosphate hydrolaseHomologous Superfamily
N [auth MM]IPR001650Helicase, C-terminal domain-likeDomain
N [auth MM]IPR014001Helicase superfamily 1/2, ATP-binding domainDomain
O [auth NN]IPR019324M-phase phosphoprotein 6Family
B [auth AA]IPR033100Exosome complex component RRP45Family
B [auth AA]IPR027408PNPase/RNase PH domain superfamilyHomologous Superfamily
B [auth AA]IPR001247Exoribonuclease, phosphorolytic domain 1Domain
B [auth AA]IPR036345Exoribonuclease, PH domain 2 superfamilyHomologous Superfamily
B [auth AA]IPR020568Ribosomal protein uS5 domain 2-type superfamilyHomologous Superfamily
B [auth AA]IPR015847Exoribonuclease, phosphorolytic domain 2Domain
C [auth BB]IPR027408PNPase/RNase PH domain superfamilyHomologous Superfamily
C [auth BB]IPR001247Exoribonuclease, phosphorolytic domain 1Domain
C [auth BB]IPR036345Exoribonuclease, PH domain 2 superfamilyHomologous Superfamily
C [auth BB]IPR020568Ribosomal protein uS5 domain 2-type superfamilyHomologous Superfamily
C [auth BB]IPR015847Exoribonuclease, phosphorolytic domain 2Domain
E [auth DD]IPR027408PNPase/RNase PH domain superfamilyHomologous Superfamily
E [auth DD]IPR001247Exoribonuclease, phosphorolytic domain 1Domain
E [auth DD]IPR036345Exoribonuclease, PH domain 2 superfamilyHomologous Superfamily
E [auth DD]IPR020568Ribosomal protein uS5 domain 2-type superfamilyHomologous Superfamily
E [auth DD]IPR015847Exoribonuclease, phosphorolytic domain 2Domain
F [auth EE]IPR027408PNPase/RNase PH domain superfamilyHomologous Superfamily
F [auth EE]IPR020568Ribosomal protein uS5 domain 2-type superfamilyHomologous Superfamily
H [auth GG]IPR041054Exosome complex exonuclease Rrp40, N-terminal domain, eukaryotesDomain
H [auth GG]IPR049469Exosome complex component RRP40, type I KH domainDomain
H [auth GG]IPR037319Rrp40, S1 domainDomain
H [auth GG]IPR036612K Homology domain, type 1 superfamilyHomologous Superfamily
H [auth GG]IPR012340Nucleic acid-binding, OB-foldHomologous Superfamily
H [auth GG]IPR026699Exosome complex RNA-binding protein 1/RRP40/RRP4Family
H [auth GG]IPR004088K Homology domain, type 1Domain