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	SH2_2	e3p9aI1	A: a/b three-layered sandwiches	X: jelly-roll	H: Galactose-binding domain-like	T: Galactose-binding domain-like	F: SH2_2	ECOD (v294.1)
H	SH2_2	e3p9aH1	A: a/b three-layered sandwiches	X: jelly-roll	H: Galactose-binding domain-like	T: Galactose-binding domain-like	F: SH2_2	ECOD (v294.1)
G	SH2_2	e3p9aG1	A: a/b three-layered sandwiches	X: jelly-roll	H: Galactose-binding domain-like	T: Galactose-binding domain-like	F: SH2_2	ECOD (v294.1)
F	SH2_2	e3p9aF1	A: a/b three-layered sandwiches	X: jelly-roll	H: Galactose-binding domain-like	T: Galactose-binding domain-like	F: SH2_2	ECOD (v294.1)
E	SH2_2	e3p9aE1	A: a/b three-layered sandwiches	X: jelly-roll	H: Galactose-binding domain-like	T: Galactose-binding domain-like	F: SH2_2	ECOD (v294.1)
D	SH2_2	e3p9aD1	A: a/b three-layered sandwiches	X: jelly-roll	H: Galactose-binding domain-like	T: Galactose-binding domain-like	F: SH2_2	ECOD (v294.1)
C	SH2_2	e3p9aC1	A: a/b three-layered sandwiches	X: jelly-roll	H: Galactose-binding domain-like	T: Galactose-binding domain-like	F: SH2_2	ECOD (v294.1)
B	SH2_2	e3p9aB1	A: a/b three-layered sandwiches	X: jelly-roll	H: Galactose-binding domain-like	T: Galactose-binding domain-like	F: SH2_2	ECOD (v294.1)
A	GP3_package	e3p9aA2	A: a/b three-layered sandwiches	X: DEATH domain	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: GP3_package	ECOD (v294.1)

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.