3P9A | pdb_00003p9a

An atomic view of the nonameric small terminase subunit of Bacteriophage P22

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
I	SCOP2B Superfamily	Homeodomain-like	8092492	3000001	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Homeodomain-like	8092492	3000001	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Homeodomain-like	8092492	3000001	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Homeodomain-like	8092492	3000001	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Homeodomain-like	8092492	3000001	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Homeodomain-like	8092492	3000001	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Homeodomain-like	8092492	3000001	SCOP2B (2022-06-29)
B	SCOP2 Family	P22 small terminase subunit-like	8045973	4004793	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Homeodomain-like	8092492	3000001	SCOP2 (2022-06-29)
A	SCOP2B Superfamily	Homeodomain-like	8092492	3000001	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
I	GP3_package	e3p9aI1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: GP3_package	ECOD (1.6)
H	GP3_package	e3p9aH1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: GP3_package	ECOD (1.6)
G	GP3_package	e3p9aG1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: GP3_package	ECOD (1.6)
F	GP3_package	e3p9aF1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: GP3_package	ECOD (1.6)
E	GP3_package	e3p9aE1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: GP3_package	ECOD (1.6)
D	GP3_package	e3p9aD1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: GP3_package	ECOD (1.6)
C	GP3_package	e3p9aC1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: GP3_package	ECOD (1.6)
B	GP3_package	e3p9aB1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: GP3_package	ECOD (1.6)
A	GP3_package	e3p9aA2	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: GP3_package	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
I	1.10.132.80	Mainly Alpha	Orthogonal Bundle	Topoisomerase I	Chain A, domain 4	CATH (4.3.0)
H	1.10.132.80	Mainly Alpha	Orthogonal Bundle	Topoisomerase I	Chain A, domain 4	CATH (4.3.0)
G	1.10.132.80	Mainly Alpha	Orthogonal Bundle	Topoisomerase I	Chain A, domain 4	CATH (4.3.0)
F	1.10.132.80	Mainly Alpha	Orthogonal Bundle	Topoisomerase I	Chain A, domain 4	CATH (4.3.0)
E	1.10.132.80	Mainly Alpha	Orthogonal Bundle	Topoisomerase I	Chain A, domain 4	CATH (4.3.0)
D	1.10.132.80	Mainly Alpha	Orthogonal Bundle	Topoisomerase I	Chain A, domain 4	CATH (4.3.0)
C	1.10.132.80	Mainly Alpha	Orthogonal Bundle	Topoisomerase I	Chain A, domain 4	CATH (4.3.0)
B	1.10.132.80	Mainly Alpha	Orthogonal Bundle	Topoisomerase I	Chain A, domain 4	CATH (4.3.0)
A	1.10.132.80	Mainly Alpha	Orthogonal Bundle	Topoisomerase I	Chain A, domain 4	CATH (4.3.0)

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	PF16677	DNA-packaging protein gp3 (GP3_package)	DNA-packaging protein gp3	DNA-packaging protein gp3 (terminase small subunit) is involved in DNA packing in bacteriophage. it contains a channel where DNA is bound and passed to DNA-packaging protein gp2 (terminase large subunit) [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	DNA-packaging protein gp3	DNA binding binding nucleic acid binding identical protein binding protein binding	-	viral terminase complex protein-containing complex viral terminase, small subunit

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	IPR032066	DNA-packaging protein gp3	Family

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.