Annotations: 4XVN

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Terminase_5	e4xvnA2	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	e4xvnA1	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	e4xvnB1	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	e4xvnB2	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	e4xvnC2	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	e4xvnC1	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	e4xvnD2	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	e4xvnD1	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	e4xvnE2	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)
E	EUF08177	e4xvnE1	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)
F	Terminase_5	e4xvnF1	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	e4xvnF2	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	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	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