Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyTERT TR-binding domain-like 8052454 3002119 SCOP2B (2022-06-29)
BSCOP2 FamilyTelomerase RBD-like 8047108 4005451 SCOP2 (2022-06-29)
BSCOP2 SuperfamilyTERT TR-binding domain-like 8052454 3002119 SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ATelomerase_RBDe4o26A1 A: alpha arraysX: RNA-binding domain of telomerase (From Topology)H: RNA-binding domain of telomerase (From Topology)T: RNA-binding domain of telomeraseF: Telomerase_RBDECOD (1.6)
BTelomerase_RBDe4o26B1 A: alpha arraysX: RNA-binding domain of telomerase (From Topology)H: RNA-binding domain of telomerase (From Topology)T: RNA-binding domain of telomeraseF: Telomerase_RBDECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A1.10.132.70 Mainly Alpha Orthogonal Bundle Topoisomerase I Chain A, domain 4CATH (4.3.0)
B1.10.132.70 Mainly Alpha Orthogonal Bundle Topoisomerase I Chain A, domain 4CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF12009Telomerase ribonucleoprotein complex - RNA binding domain (Telomerase_RBD)Telomerase ribonucleoprotein complex - RNA binding domainTelomeres in most organisms are comprised of tandem simple sequence repeats [1]. The total length of telomeric repeat sequence at each chromosome end is determined in a balance of sequence loss and sequence addition [1]. One major influence on telome ...Telomeres in most organisms are comprised of tandem simple sequence repeats [1]. The total length of telomeric repeat sequence at each chromosome end is determined in a balance of sequence loss and sequence addition [1]. One major influence on telomere length is the enzyme telomerase [1]. It is a reverse transcriptase that adds these simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme [1]. The RNA binding domain of telomerase - TRBD - is made up of twelve alpha helices and two short beta sheets [2]. How telomerase and associated regulatory factors physically interact and function with each other to maintain appropriate telomere length is poorly understood. It is known however that TRBD is involved in formation of the holoenzyme (which performs the telomere extension) in addition to recognition and binding of RNA [2].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
Telomerase reverse transcriptase
C [auth E],
D [auth F]
Telomerase TR---