Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
C [auth F]SCOP2B SuperfamilyCRISPR-associated proteins8106216 3001554 SCOP2B (2022-06-29)
D [auth H]SCOP2B SuperfamilyCRISPR-associated proteins8106216 3001554 SCOP2B (2022-06-29)
E [auth G]SCOP2B SuperfamilyCRISPR-associated proteins8106216 3001554 SCOP2B (2022-06-29)
F [auth I]SCOP2B SuperfamilyCRISPR-associated proteins8106216 3001554 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
APF20824e6xn7A2 A: alpha bundlesX: CRISPR RNA silencing complex Cmr2 subunit second helical domain (From Topology)H: CRISPR RNA silencing complex Cmr2 subunit second helical domain (From Topology)T: CRISPR RNA silencing complex Cmr2 subunit second helical domainF: PF20824ECOD (1.6)
AF_UNCLASSIFIEDe6xn7A3 A: alpha complex topologyX: PDEase-likeH: HD-domain/PDEase-like (From Topology)T: HD-domain/PDEase-likeF: F_UNCLASSIFIEDECOD (1.6)
APF18211e6xn7A4 A: a+b two layersX: Alpha-beta plaitsH: Adenylyl and guanylyl cyclase catalytic domain-likeT: Adenylyl and guanylyl cyclase catalytic domain-likeF: PF18211ECOD (1.6)
APF22335e6xn7A5 A: a+b two layersX: Alpha-beta plaitsH: Adenylyl and guanylyl cyclase catalytic domain-likeT: Adenylyl and guanylyl cyclase catalytic domain-likeF: PF22335ECOD (1.6)
AF_UNCLASSIFIEDe6xn7A1 A: a+b two layersX: Csm1 ferredoxin-like domain (From Topology)H: Csm1 ferredoxin-like domain (From Topology)T: Csm1 ferredoxin-like domainF: F_UNCLASSIFIEDECOD (1.6)
BPF03787e6xn7B1 A: a+b two layersX: Alpha-beta plaitsH: CRISPR transcript (pre-crRNA) processing endoribonuclease-related (From Topology)T: CRISPR transcript (pre-crRNA) processing endoribonuclease-relatedF: PF03787ECOD (1.6)
BPF17953e6xn7B2 A: a+b two layersX: Alpha-beta plaitsH: CRISPR transcript (pre-crRNA) processing endoribonuclease-related (From Topology)T: CRISPR transcript (pre-crRNA) processing endoribonuclease-relatedF: PF17953ECOD (1.6)
C [auth F]PF03787e6xn7F1 A: a+b two layersX: Alpha-beta plaitsH: Cas7-relatedT: CRISPR-associated protein Cas7/Csa2-relatedF: PF03787ECOD (1.6)
D [auth H]PF03787e6xn7H1 A: a+b two layersX: Alpha-beta plaitsH: Cas7-relatedT: CRISPR-associated protein Cas7/Csa2-relatedF: PF03787ECOD (1.6)
E [auth G]PF03787e6xn7G1 A: a+b two layersX: Alpha-beta plaitsH: Cas7-relatedT: CRISPR-associated protein Cas7/Csa2-relatedF: PF03787ECOD (1.6)
F [auth I]PF03787e6xn7I1 A: a+b two layersX: Alpha-beta plaitsH: Cas7-relatedT: CRISPR-associated protein Cas7/Csa2-relatedF: PF03787ECOD (1.6)
G [auth J]PF03787e6xn7J1 A: a+b two layersX: Alpha-beta plaitsH: CRISPR transcript (pre-crRNA) processing endoribonuclease-related (From Topology)T: CRISPR transcript (pre-crRNA) processing endoribonuclease-relatedF: PF03787ECOD (1.6)
I [auth C]PF03750e6xn7C1 A: alpha duplicates or obligate multimersX: Crispr-associated protein Csm2 (From Topology)H: Crispr-associated protein Csm2 (From Topology)T: Crispr-associated protein Csm2F: PF03750ECOD (1.6)
J [auth D]PF03750e6xn7D1 A: alpha duplicates or obligate multimersX: Crispr-associated protein Csm2 (From Topology)H: Crispr-associated protein Csm2 (From Topology)T: Crispr-associated protein Csm2F: PF03750ECOD (1.6)
K [auth E]PF03750e6xn7E1 A: alpha duplicates or obligate multimersX: Crispr-associated protein Csm2 (From Topology)H: Crispr-associated protein Csm2 (From Topology)T: Crispr-associated protein Csm2F: PF03750ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF01966HD domain (HD)HD domain- Family
PF18211Csm1 subunit domain B (Csm1_B)Csm1 subunit domain BThis domain is found in the Csm1 subunit of the Csm complex found in Thermococcus onnurineus. Csm is a type III-A CRISPR-Cas system, which is an RNA-guided immune defense mechanism that detects and destroys foreign DNA or RNA. This domain is known as ...This domain is found in the Csm1 subunit of the Csm complex found in Thermococcus onnurineus. Csm is a type III-A CRISPR-Cas system, which is an RNA-guided immune defense mechanism that detects and destroys foreign DNA or RNA. This domain is known as domain A and is positioned side by side with domain C. Both domain A and domain C adopt the BABBA topology. Domain A interacts primarily with domain B [1].
Domain
PF20824CRISPR RNA silencing complex Cmr2 subunit, second helical domain (Cmr2_hel_dom2)CRISPR RNA silencing complex Cmr2 subunit, second helical domainThe prokaryotic CRISPR RNA-Cas protein (Cmr) complex provides protection against mobile genetic elements by cleaving foreign RNA. Its largest subunit is Cmr2. This protein shows a N-terminal HD (histidine-aspartate) domain, two RRM domains resembling ...The prokaryotic CRISPR RNA-Cas protein (Cmr) complex provides protection against mobile genetic elements by cleaving foreign RNA. Its largest subunit is Cmr2. This protein shows a N-terminal HD (histidine-aspartate) domain, two RRM domains resembling adenylate cyclase and two alpha-helical domains. This entry represents the second alpha-helical domain. It is similar to the small subunit Cmr5, which contains six alpha-helices and two helical insertions that fold into a single globular structure [1-5]. This domain is also found in Cas10 proteins from bacteria [6].
Domain
PF17953CRISPR Csm4 C-terminal domain (Csm4_C)CRISPR Csm4 C-terminal domainClustered, regularly interspaced, short palindromic repeat (CRISPR) loci play a pivotal role in the prokaryotic host defense system against invading genetic materials. The CRISPR loci are transcribed to produce CRISPR RNAs (crRNAs), which form interf ...Clustered, regularly interspaced, short palindromic repeat (CRISPR) loci play a pivotal role in the prokaryotic host defense system against invading genetic materials. The CRISPR loci are transcribed to produce CRISPR RNAs (crRNAs), which form interference complexes with CRISPR-associated (Cas) proteins to target the invading nucleic acid for degradation. The interference complex of the type III-A CRISPR-Cas system is composed of five Cas proteins (Csm1-Csm5) and a crRNA, and targets invading DNA. This entry represents the C-terminal domain found in Csm4. Csm4 structurally resembles Cmr3, a component of the type III-B CRISPR-Cas interference complex. Studies indicate that Csm3-Csm4 complex binds single-stranded RNA in a non-sequence-specific manner. Structural analysis show , Csm3 and Csm4 have one and two ferredoxin-like folds (also known as an RRM-like fold), respectively. The long beta-hairpin inserted into the C-terminal ferredoxin-like fold of Csm4, is well-conserved in the Cmr3 structure. The corresponding beta-hairpin of Cmr3 binds the D1 domain of Cmr2, as observed in the Cmr2-Cmr3 complex structure. Furthermore, it is suggested that the hairpin of Csm4 is responsible for the interaction with Csm1 (ortholog of Cmr2) [1].
Domain
PF03787RAMP superfamily (RAMPs)RAMP superfamily- Family
C [auth F],
D [auth H],
E [auth G],
F [auth I]
PF03787RAMP superfamily (RAMPs)RAMP superfamily- Family
G [auth J]PF03787RAMP superfamily (RAMPs)RAMP superfamily- Family
I [auth C],
J [auth D],
K [auth E]
PF03750Csm2 Type III-A (Csm2_III-A)Csm2 Type III-A- Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
CRISPR-associated protein Cas10 -
CRISPR-associated protein Csm4 -
C [auth F],
D [auth H],
E [auth G],
F [auth I]
CRISPR-associated protein Csm3 -
G [auth J]CRISPR-associated protein Csm5 -
H [auth R]Crispr RNA---
I [auth C],
J [auth D],
K [auth E]
CRISPR-associated protein Csm2 -
L [auth T]Target RNA---