Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyGlycosylating toxin catalytic domain-like 8025181 4002384 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyNucleotide-diphospho-sugar transferases 8037560 3000077 SCOP2 (2022-06-29)
BSCOP2B SuperfamilyNucleotide-diphospho-sugar transferases 8037560 3000077 SCOP2B (2022-06-29)
CSCOP2B SuperfamilyNucleotide-diphospho-sugar transferases 8037560 3000077 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AMLDe2vl8A1 A: alpha bundlesX: Bromodomain-likeH: PMT helical bundle domain-likeT: PMT helical bundle domain-likeF: MLDECOD (1.6)
ATcdA_TcdBe2vl8A2 A: a/b three-layered sandwichesX: Nucleotide-diphospho-sugar transferases (From Topology)H: Nucleotide-diphospho-sugar transferases (From Topology)T: Nucleotide-diphospho-sugar transferasesF: TcdA_TcdBECOD (1.6)
BMLDe2vl8B1 A: alpha bundlesX: Bromodomain-likeH: PMT helical bundle domain-likeT: PMT helical bundle domain-likeF: MLDECOD (1.6)
BTcdA_TcdBe2vl8B2 A: a/b three-layered sandwichesX: Nucleotide-diphospho-sugar transferases (From Topology)H: Nucleotide-diphospho-sugar transferases (From Topology)T: Nucleotide-diphospho-sugar transferasesF: TcdA_TcdBECOD (1.6)
CMLDe2vl8C1 A: alpha bundlesX: Bromodomain-likeH: PMT helical bundle domain-likeT: PMT helical bundle domain-likeF: MLDECOD (1.6)
CTcdA_TcdBe2vl8C2 A: a/b three-layered sandwichesX: Nucleotide-diphospho-sugar transferases (From Topology)H: Nucleotide-diphospho-sugar transferases (From Topology)T: Nucleotide-diphospho-sugar transferasesF: TcdA_TcdBECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B, C
PF12919TcdA/TcdB catalytic glycosyltransferase domain (TcdA_TcdB)TcdA/TcdB catalytic glycosyltransferase domainThis domain represents the N-terminal glycosyltransferase from a set of toxins found in some bacteria. This domain in TcdB glycosylates the host RhoA protein.Domain
A, B, C
PF12918TcdB toxin N-terminal helical domain (TcdB_N)TcdB toxin N-terminal helical domainThis is a short helical bundle domain found associated with the catalytic domain of the TcdB toxin from C. difficile [1]. The function of this domain is unknown, but it may be involved in substrate recognition.Domain
A, B, C
PF11647Membrane Localization Domain (MLD)Membrane Localization DomainThis is a membrane localization domain found in multiple families of bacterial toxins including all of the clostridial glucosyltransferase toxins and various MARTX toxins (multifunctional-autoprocessing RTX toxins) [1,4]. In the Pasteurella multocida ...This is a membrane localization domain found in multiple families of bacterial toxins including all of the clostridial glucosyltransferase toxins and various MARTX toxins (multifunctional-autoprocessing RTX toxins) [1,4]. In the Pasteurella multocida toxin (PMT) C-terminal fragment, structural analysis have indicated that the C1 domain possesses a signal that leads the toxin to the cell membrane. Furthermore, the C1 domain was found to structurally resemble the phospholipid-binding domain of C. difficile toxin B [2]. Functional studies in Vibrio cholera indicate that the subdomain at the N terminus of RID (Rho-inactivation domain), homologous to the membrane targeting C1 domain of Pasteurella multocida toxin, is a conserved membrane localization domain essential for proper localization [1]. The Rho-inactivation domain (RID) of MARTX (Multifunctional Autoprocessing RTX toxin) is responsible for inactivating the Rho-family of small GTPases in Vibrio cholerae. It is a bacterial toxin that self-process by a cysteine peptidase mechanism [3]. The Vibrio cholerae RTX toxin is an autoprocessing cysteine protease whose activity is stimulated by the intracellular environment [3]. This cysteine peptidase belongs to MEROPS peptidase family G6.
Domain