Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyRNA-binding domain RBD8093096 3000110 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyRNA-binding domain RBD8093095 3000110 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyRNA-binding domain RBD8093090 3000110 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyRNA-binding domain RBD8093094 3000110 SCOP2B (2022-06-29)
CSCOP2B SuperfamilySm-like ribonucleoproteins8063446 3000419 SCOP2B (2022-06-29)
ESCOP2B SuperfamilySm-like ribonucleoproteins8063464 3000419 SCOP2B (2022-06-29)
FSCOP2 FamilySm motif of small nuclear ribonucleoproteins SNRNP8099109 4001809 SCOP2 (2022-06-29)
FSCOP2 SuperfamilySm-like ribonucleoproteins8099110 3000419 SCOP2 (2022-06-29)
GSCOP2B SuperfamilySm-like ribonucleoproteins8063498 3000419 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
APF00076e5vsuA2 A: a+b two layersX: Alpha-beta plaitsH: RNA-binding domain, RBD (From Topology)T: RNA-binding domain, RBDF: PF00076ECOD (1.6)
APF05391,PF16842e5vsuA3 A: a+b two layersX: Alpha-beta plaitsH: RNA-binding domain, RBD (From Topology)T: RNA-binding domain, RBDF: PF05391,PF16842ECOD (1.6)
BPF01423e5vsuB1 A: beta barrelsX: SH3H: SH3T: SH3F: PF01423ECOD (1.6)
CPF01423e5vsuC1 A: beta barrelsX: SH3H: SH3T: SH3F: PF01423ECOD (1.6)
DPF01423e5vsuD1 A: beta barrelsX: SH3H: SH3T: SH3F: PF01423ECOD (1.6)
EPF01423e5vsuE1 A: beta barrelsX: SH3H: SH3T: SH3F: PF01423ECOD (1.6)
FPF01423e5vsuF1 A: beta barrelsX: SH3H: SH3T: SH3F: PF01423ECOD (1.6)
GPF01423e5vsuG1 A: beta barrelsX: SH3H: SH3T: SH3F: PF01423ECOD (1.6)
HPF01423e5vsuH1 A: beta barrelsX: SH3H: SH3T: SH3F: PF01423ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.30.70.330 Alpha Beta 2-Layer Sandwich Alpha-Beta Plaits RRM (RNA recognition motif) domainCATH (utative)
B2.30.30.100 Mainly Beta Roll SH3 type barrels. CATH (4.3.0)
C2.30.30.100 Mainly Beta Roll SH3 type barrels. CATH (4.3.0)
D2.30.30.100 Mainly Beta Roll SH3 type barrels. CATH (4.3.0)
E2.30.30.100 Mainly Beta Roll SH3 type barrels. CATH (4.3.0)
F2.30.30.100 Mainly Beta Roll SH3 type barrels. CATH (4.3.0)
G2.30.30.100 Mainly Beta Roll SH3 type barrels. CATH (4.3.0)
H2.30.30.100 Mainly Beta Roll SH3 type barrels. CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF00076RNA recognition motif (RRM_1)RNA recognition motifThe RRM motif (a.k.a. RRM, RBD, or RNP domain) is probably diagnostic of an RNA binding protein. RRMs are found in a variety of RNA binding proteins, including various hnRNP proteins, proteins implicated in regulation of alternative splicing, and pro ...The RRM motif (a.k.a. RRM, RBD, or RNP domain) is probably diagnostic of an RNA binding protein. RRMs are found in a variety of RNA binding proteins, including various hnRNP proteins, proteins implicated in regulation of alternative splicing, and protein components of snRNPs. The motif also appears in a few single stranded DNA binding proteins. The RRM structure consists of four strands and two helices arranged in an alpha/beta sandwich, with a third helix present during RNA binding in some cases The C-terminal beta strand (4th strand) and final helix are hard to align and have been omitted in the SEED alignment The LA proteins (Swiss:P05455) have an N terminal rrm which is included in the seed. There is a second region towards the C terminus that has some features characteristic of a rrm but does not appear to have the important structural core of a rrm. The LA proteins (Swiss:P05455) are one of the main autoantigens in Systemic lupus erythematosus (SLE), an autoimmune disease.
Domain
PF16842Occluded RNA-recognition motif (RRM_occluded)Occluded RNA-recognition motifThis family is an unusual, usually C-terminal, RNA-recognition motif found in fungi. In yeast it is the fourth RRM domain on the essential splicing factor Prp24. Structurally, it has a non-canonical RRM fold with the expected beta-aloha-beta-beta-alp ...This family is an unusual, usually C-terminal, RNA-recognition motif found in fungi. In yeast it is the fourth RRM domain on the essential splicing factor Prp24. Structurally, it has a non-canonical RRM fold with the expected beta-aloha-beta-beta-alpha-beta RRM-fold is flanked by N- and C-terminal alpha-helices. These two additional flanking alpha-helices occlude the beta-sheet face. The electropositive surface thereby presented is an alternative RNA-binding surface that allows both binding and unwinding of the U6 small nuclear RNA's internal stem loop, at least in vitro [1].
Domain
PF01423LSM domain (LSM)LSM domainThe LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.
Domain
PF01423LSM domain (LSM)LSM domainThe LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.
Domain
PF01423LSM domain (LSM)LSM domainThe LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.
Domain
PF01423LSM domain (LSM)LSM domainThe LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.
Domain
PF01423LSM domain (LSM)LSM domainThe LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.
Domain
PF01423LSM domain (LSM)LSM domainThe LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.
Domain
PF01423LSM domain (LSM)LSM domainThe LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) i ...The LSM domain contains Sm proteins as well as other related LSM (Like Sm) proteins. The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs. The U6 snRNP binds to the LSM (Like Sm) proteins [3]. Sm proteins are also found in archaebacteria, which do not have any splicing apparatus suggesting a more general role for Sm proteins. All Sm proteins contain a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. This family also includes the bacterial Hfq (host factor Q) proteins. Hfq are also RNA-binding proteins, that form hexameric rings.
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
U4/U6 snRNA-associated-splicing factor PRP24
U6 snRNA-associated Sm-like protein LSm2
U6 snRNA-associated Sm-like protein LSm3
U6 snRNA-associated Sm-like protein LSm4
U6 snRNA-associated Sm-like protein LSm5
U6 snRNA-associated Sm-like protein LSm6
U6 snRNA-associated Sm-like protein LSm7
U6 snRNA-associated Sm-like protein LSm8
Saccharomyces cerevisiae strain T8 chromosome XII sequence---

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
IPR034397Prp24, RNA recognition motif1Domain
IPR000504RNA recognition motif domainDomain
IPR034398Prp24, RNA recognition motif2Domain
IPR008669LSM-interacting domainDomain
IPR012677Nucleotide-binding alpha-beta plait domain superfamilyHomologous Superfamily
IPR031766Occluded RNA-recognition motifDomain
IPR034540Prp24, RNA recognition motif 3Domain
IPR035979RNA-binding domain superfamilyHomologous Superfamily
IPR001163Sm domain, eukaryotic/archaea-typeDomain
IPR047575Sm domainDomain
IPR010920LSM domain superfamilyHomologous Superfamily
IPR016654U6 snRNA-associated Sm-like protein LSm2Family
IPR040002U6 snRNA-associated Sm-like protein Lsm3Family
IPR001163Sm domain, eukaryotic/archaea-typeDomain
IPR047575Sm domainDomain
IPR010920LSM domain superfamilyHomologous Superfamily
IPR034105Sm-like protein Lsm3Domain
IPR001163Sm domain, eukaryotic/archaea-typeDomain
IPR027141Like-Sm (LSM) domain containing protein, LSm4/SmD1/SmD3Family
IPR047575Sm domainDomain
IPR034101Sm-like protein Lsm4Domain
IPR010920LSM domain superfamilyHomologous Superfamily
IPR001163Sm domain, eukaryotic/archaea-typeDomain
IPR047575Sm domainDomain
IPR033871Sm-like protein LSm5Domain
IPR010920LSM domain superfamilyHomologous Superfamily
IPR001163Sm domain, eukaryotic/archaea-typeDomain
IPR047575Sm domainDomain
IPR016487Sm-like protein Lsm6/SmFFamily
IPR010920LSM domain superfamilyHomologous Superfamily
IPR044641Sm-like protein Lsm7/SmGFamily
IPR017132Sm-like protein Lsm7Family
IPR001163Sm domain, eukaryotic/archaea-typeDomain
IPR047575Sm domainDomain
IPR010920LSM domain superfamilyHomologous Superfamily
IPR001163Sm domain, eukaryotic/archaea-typeDomain
IPR047575Sm domainDomain
IPR034103Sm-like protein Lsm8Domain
IPR010920LSM domain superfamilyHomologous Superfamily
IPR044642U6 snRNA-associated Sm-like protein Lsm1/8Family