6EJQ | pdb_00006ejq

Crystal structure of a C-terminally truncated small terminase protein from the thermophilic bacteriophage G20c

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Terminase_5	e6ejqA2	A: alpha arrays	X: HTH	H: Phage G20C small terminase N-terminal domain (From Topology)	T: Phage G20C small terminase N-terminal domain	F: Terminase_5	ECOD (1.6)
A	EUF08177	e6ejqA1	A: alpha bundles	X: Phage G20C small terminase C-terminal domain (From Topology)	H: Phage G20C small terminase C-terminal domain (From Topology)	T: Phage G20C small terminase C-terminal domain	F: EUF08177	ECOD (1.6)
B	Terminase_5	e6ejqB1	A: alpha arrays	X: HTH	H: Phage G20C small terminase N-terminal domain (From Topology)	T: Phage G20C small terminase N-terminal domain	F: Terminase_5	ECOD (1.6)
B	EUF08177	e6ejqB2	A: alpha bundles	X: Phage G20C small terminase C-terminal domain (From Topology)	H: Phage G20C small terminase C-terminal domain (From Topology)	T: Phage G20C small terminase C-terminal domain	F: EUF08177	ECOD (1.6)
C	Terminase_5	e6ejqC1	A: alpha arrays	X: HTH	H: Phage G20C small terminase N-terminal domain (From Topology)	T: Phage G20C small terminase N-terminal domain	F: Terminase_5	ECOD (1.6)
C	EUF08177	e6ejqC2	A: alpha bundles	X: Phage G20C small terminase C-terminal domain (From Topology)	H: Phage G20C small terminase C-terminal domain (From Topology)	T: Phage G20C small terminase C-terminal domain	F: EUF08177	ECOD (1.6)
D	Terminase_5	e6ejqD1	A: alpha arrays	X: HTH	H: Phage G20C small terminase N-terminal domain (From Topology)	T: Phage G20C small terminase N-terminal domain	F: Terminase_5	ECOD (1.6)
D	EUF08177	e6ejqD2	A: alpha bundles	X: Phage G20C small terminase C-terminal domain (From Topology)	H: Phage G20C small terminase C-terminal domain (From Topology)	T: Phage G20C small terminase C-terminal domain	F: EUF08177	ECOD (1.6)
E	Terminase_5,EUF08177	e6ejqE1	A: alpha bundles	X: Phage G20C small terminase C-terminal domain (From Topology)	H: Phage G20C small terminase C-terminal domain (From Topology)	T: Phage G20C small terminase C-terminal domain	F: Terminase_5,EUF08177	ECOD (1.6)
F	Terminase_5	e6ejqF1	A: alpha arrays	X: HTH	H: Phage G20C small terminase N-terminal domain (From Topology)	T: Phage G20C small terminase N-terminal domain	F: Terminase_5	ECOD (1.6)
F	EUF08177	e6ejqF2	A: alpha bundles	X: Phage G20C small terminase C-terminal domain (From Topology)	H: Phage G20C small terminase C-terminal domain (From Topology)	T: Phage G20C small terminase C-terminal domain	F: EUF08177	ECOD (1.6)
G	Terminase_5	e6ejqG1	A: alpha arrays	X: HTH	H: Phage G20C small terminase N-terminal domain (From Topology)	T: Phage G20C small terminase N-terminal domain	F: Terminase_5	ECOD (1.6)
G	EUF08177	e6ejqG2	A: alpha bundles	X: Phage G20C small terminase C-terminal domain (From Topology)	H: Phage G20C small terminase C-terminal domain (From Topology)	T: Phage G20C small terminase C-terminal domain	F: EUF08177	ECOD (1.6)
H	Terminase_5	e6ejqH2	A: alpha arrays	X: HTH	H: Phage G20C small terminase N-terminal domain (From Topology)	T: Phage G20C small terminase N-terminal domain	F: Terminase_5	ECOD (1.6)
H	EUF08177	e6ejqH1	A: alpha bundles	X: Phage G20C small terminase C-terminal domain (From Topology)	H: Phage G20C small terminase C-terminal domain (From Topology)	T: Phage G20C small terminase C-terminal domain	F: EUF08177	ECOD (1.6)
I	EUF08177	e6ejqI1	A: alpha bundles	X: Phage G20C small terminase C-terminal domain (From Topology)	H: Phage G20C small terminase C-terminal domain (From Topology)	T: Phage G20C small terminase C-terminal domain	F: EUF08177	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G, H, I	PF22412	Phage G20C small terminase C-terminal domain (TerS_C)	Phage G20C small terminase C-terminal domain	This domain is found at the C-terminal end of terminase small subunit (TerS) from Thermus phage G20c, which oligomerises into a nonamer that binds DNA, stimulates terminase large subunit ATPase activity, and inhibits TerL nuclease activity. TerS is o ...	This domain is found at the C-terminal end of terminase small subunit (TerS) from Thermus phage G20c, which oligomerises into a nonamer that binds DNA, stimulates terminase large subunit ATPase activity, and inhibits TerL nuclease activity. TerS is organised into an N-terminal helix-turn-helix (HTH) motif (Pfam:PF21434) followed by an oligomerisation domain consisting of two antiparallel helices (this entry) that pack against the oligomerisation domain helices of the neighbouring subunit, forming a helical barrel [1].	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I	PF21434	Phage G20C small terminase, N-terminal domain (TerS_N)	Phage G20C small terminase, N-terminal domain	This entry represents the N-terminal helix-turn-helix domain of the terminase small subunit (TerS) from Thermus phage G20c [1], which oligomerises into a nonamer that binds DNA, stimulates terminase large subunit (TerL) ATPase activity, and inhibits ...	This entry represents the N-terminal helix-turn-helix domain of the terminase small subunit (TerS) from Thermus phage G20c [1], which oligomerises into a nonamer that binds DNA, stimulates terminase large subunit (TerL) ATPase activity, and inhibits TerL nuclease activity [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G, H, I	Terminase small subunit	DNA binding binding nucleic acid binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G, H, I	IPR055147	Phage G20C small terminase, C-terminal domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I	IPR049136	Phage G20C small terminase, N-terminal domain	Domain

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.