Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
J [auth K]SCOP2B SuperfamilySm-like ribonucleoproteins8077613 3000419 SCOP2B (2022-06-29)
K [auth L]SCOP2B SuperfamilySm-like ribonucleoproteins8082631 3000419 SCOP2B (2022-06-29)
L [auth M]SCOP2B SuperfamilySm-like ribonucleoproteins8063490 3000419 SCOP2B (2022-06-29)
M [auth N]SCOP2B SuperfamilySm-like ribonucleoproteins8098694 3000419 SCOP2B (2022-06-29)
O [auth P]SCOP2B SuperfamilySm-like ribonucleoproteins8043703 3000419 SCOP2B (2022-06-29)
P [auth Q]SCOP2B SuperfamilySm-like ribonucleoproteins8098668 3000419 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
K [auth L]LSMe6n7rL1 A: beta barrelsX: SH3H: SH3T: SH3F: LSMECOD (1.6)
L [auth M]LSMe6n7rM1 A: beta barrelsX: SH3H: SH3T: SH3F: LSMECOD (1.6)
M [auth N]LSMe6n7rN1 A: beta barrelsX: SH3H: SH3T: SH3F: LSMECOD (1.6)
N [auth O]LSMe6n7rO1 A: beta barrelsX: SH3H: SH3T: SH3F: LSMECOD (1.6)
O [auth P]LSMe6n7rP1 A: beta barrelsX: SH3H: SH3T: SH3F: LSMECOD (1.6)
P [auth Q]LSMe6n7rQ1 A: beta barrelsX: SH3H: SH3T: SH3F: LSMECOD (1.6)
DUNK_F_TYPEe6n7rD1 A: alpha superhelicesX: Repetitive alpha hairpinsH: ARM repeat (From Topology)T: ARM repeatF: UNK_F_TYPEECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
L [auth M]2.30.30.100 Mainly Beta Roll SH3 type barrels. CATH (utative)
M [auth N]2.30.30.100 Mainly Beta Roll SH3 type barrels. CATH (utative)
N [auth O]2.30.30.100 Mainly Beta Roll SH3 type barrels. CATH (utative)
O [auth P]2.30.30.100 Mainly Beta Roll SH3 type barrels. CATH (utative)
P [auth Q]2.30.30.100 Mainly Beta Roll SH3 type barrels. CATH (utative)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
J [auth K]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
K [auth L]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
PF12220U1 small nuclear ribonucleoprotein of 70kDa MW N terminal (U1snRNP70_N)U1 small nuclear ribonucleoprotein of 70kDa MW N terminal- Family
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
L [auth M]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
M [auth N]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
N [auth O]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
O [auth P]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
P [auth Q]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
PF06220U1 zinc finger (zf-U1)U1 zinc fingerThis family consists of several U1 small nuclear ribonucleoprotein C (U1-C) proteins. The U1 small nuclear ribonucleoprotein (U1 snRNP) binds to the pre-mRNA 5' splice site (ss) at early stages of spliceosome assembly. Recruitment of U1 to a class o ...This family consists of several U1 small nuclear ribonucleoprotein C (U1-C) proteins. The U1 small nuclear ribonucleoprotein (U1 snRNP) binds to the pre-mRNA 5' splice site (ss) at early stages of spliceosome assembly. Recruitment of U1 to a class of weak 5' ss is promoted by binding of the protein TIA-1 to uridine-rich sequences immediately downstream from the 5' ss. Binding of TIA-1 in the vicinity of a 5' ss helps to stabilise U1 snRNP recruitment, at least in part, via a direct interaction with U1-C, thus providing one molecular mechanism for the function of this splicing regulator [1]. This domain is probably a zinc-binding. It is found in multiple copies in some members of the family.
Domain
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
PF19097Snu56-like U1 small nuclear ribonucleoprotein component (Snu56_snRNP)Snu56-like U1 small nuclear ribonucleoprotein component- Family
PF03194LUC7 N_terminus (LUC7)LUC7 N_terminus- Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
J [auth K]Small nuclear ribonucleoprotein-associated protein B
K [auth L]Small nuclear ribonucleoprotein Sm D1
U1 small nuclear ribonucleoprotein 70 kDa homolog
L [auth M]Small nuclear ribonucleoprotein Sm D2
M [auth N]Small nuclear ribonucleoprotein Sm D3
N [auth O]Small nuclear ribonucleoprotein E
O [auth P]Small nuclear ribonucleoprotein F
P [auth Q]Small nuclear ribonucleoprotein G
Q [auth R]U1 snRNA---
R [auth r]ACT1 pre-mRNA---
U1 small nuclear ribonucleoprotein C
U1 small nuclear ribonucleoprotein A
U1 small nuclear ribonucleoprotein component PRP42
Pre-mRNA-processing factor 39-
Protein NAM8
56 kDa U1 small nuclear ribonucleoprotein component
U1 small nuclear ribonucleoprotein component SNU71,U1 small nuclear ribonucleoprotein component SNU71,Snu71
Protein LUC7

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
J [auth K]IPR001163Sm domain, eukaryotic/archaea-typeDomain
J [auth K]IPR047575Sm domainDomain
J [auth K]IPR010920LSM domain superfamilyHomologous Superfamily
K [auth L]IPR027141Like-Sm (LSM) domain containing protein, LSm4/SmD1/SmD3Family
K [auth L]IPR001163Sm domain, eukaryotic/archaea-typeDomain
K [auth L]IPR047575Sm domainDomain
K [auth L]IPR010920LSM domain superfamilyHomologous Superfamily
IPR000504RNA recognition motif domainDomain
IPR022023U1 small nuclear ribonucleoprotein of 70kDa N-terminalDomain
IPR012677Nucleotide-binding alpha-beta plait domain superfamilyHomologous Superfamily
IPR035979RNA-binding domain superfamilyHomologous Superfamily
L [auth M]IPR001163Sm domain, eukaryotic/archaea-typeDomain
L [auth M]IPR047575Sm domainDomain
L [auth M]IPR027248Small nuclear ribonucleoprotein Sm D2Family
L [auth M]IPR010920LSM domain superfamilyHomologous Superfamily
M [auth N]IPR027141Like-Sm (LSM) domain containing protein, LSm4/SmD1/SmD3Family
M [auth N]IPR034099Small nuclear ribonucleoprotein Sm D3Family
M [auth N]IPR001163Sm domain, eukaryotic/archaea-typeDomain
M [auth N]IPR047575Sm domainDomain
M [auth N]IPR010920LSM domain superfamilyHomologous Superfamily
N [auth O]IPR027078Small nuclear ribonucleoprotein EFamily
N [auth O]IPR001163Sm domain, eukaryotic/archaea-typeDomain
N [auth O]IPR047575Sm domainDomain
N [auth O]IPR010920LSM domain superfamilyHomologous Superfamily
O [auth P]IPR016487Sm-like protein Lsm6/SmFFamily
O [auth P]IPR034100Small nuclear ribonucleoprotein FFamily
O [auth P]IPR001163Sm domain, eukaryotic/archaea-typeDomain
O [auth P]IPR047575Sm domainDomain
O [auth P]IPR010920LSM domain superfamilyHomologous Superfamily
P [auth Q]IPR044641Sm-like protein Lsm7/SmGFamily
P [auth Q]IPR034098Small nuclear ribonucleoprotein GFamily
P [auth Q]IPR001163Sm domain, eukaryotic/archaea-typeDomain
P [auth Q]IPR047575Sm domainDomain
P [auth Q]IPR010920LSM domain superfamilyHomologous Superfamily
IPR003604Matrin/U1-C-like, C2H2-type zinc fingerDomain
IPR036236Zinc finger C2H2 superfamilyHomologous Superfamily
IPR000690Matrin/U1-C, C2H2-type zinc fingerDomain
IPR013085U1-C, C2H2-type zinc fingerDomain
IPR017340U1 small nuclear ribonucleoprotein CFamily
IPR012677Nucleotide-binding alpha-beta plait domain superfamilyHomologous Superfamily
IPR000504RNA recognition motif domainDomain
IPR035979RNA-binding domain superfamilyHomologous Superfamily
IPR003107HAT (Half-A-TPR) repeatRepeat
IPR011990Tetratricopeptide-like helical domain superfamilyHomologous Superfamily
IPR003107HAT (Half-A-TPR) repeatRepeat
IPR011990Tetratricopeptide-like helical domain superfamilyHomologous Superfamily
IPR000504RNA recognition motif domainDomain
IPR012677Nucleotide-binding alpha-beta plait domain superfamilyHomologous Superfamily
IPR035979RNA-binding domain superfamilyHomologous Superfamily
IPR043954Snu56-like U1 small nuclear ribonucleoprotein componentFamily
IPR002483PWI domainDomain
IPR004882Luc7-relatedFamily