Crystal structure of P23-45 gp39 (6-109) bound to Thermus thermophilus RNA polymerase beta-flap domain


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
DP23-45_gp39_Ne3woeD1 A: alpha arraysX: Glycosyl hydrolase domain-likeH: alpha/alpha toroidT: alpha/alpha toroidF: P23-45_gp39_NECOD (v295.2)
Bp450e3woeB1 A: alpha arraysX: DEATH domainH: 6-phosphogluconate dehydrogenase C-terminal domain-likeT: 6-phosphogluconate dehydrogenase C-terminal domain-likeF: p450ECOD (v295.2)
CThymidylat_synte3woeC1 A: alpha arraysX: Four-helical up-and-down bundleH: Thymidylate synthase/dCMP hydroxymethylaseT: Thymidylate synthase/dCMP hydroxymethylaseF: Thymidylat_syntECOD (v295.2)
AThymidylat_synte3woeA1 A: alpha arraysX: Four-helical up-and-down bundleH: Thymidylate synthase/dCMP hydroxymethylaseT: Thymidylate synthase/dCMP hydroxymethylaseF: Thymidylat_syntECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
B, D
PF20760Thermus phage P23-45 gp39, N-terminal domain (P23-45_gp39_N)Thermus phage P23-45 gp39, N-terminal domainThis domain is found at the N terminus in the protein gp35 from Thermus phage P23-45 and similar sequences from tailed bacteriophages. This protein binds the host's DNA-dependent RNA polymerase (RNAP), inhibiting host gene transcription while allowin ...This domain is found at the N terminus in the protein gp35 from Thermus phage P23-45 and similar sequences from tailed bacteriophages. This protein binds the host's DNA-dependent RNA polymerase (RNAP), inhibiting host gene transcription while allowing transcription of phage genes. Structural studies show this core domain of the protein binds to the RNA beta-flap domain. It consists of a central beta sheet and a N-terminal helix [1, 2].
Domain