Annotations: 3ZQQ

Crystal structure of the full-length small terminase from a SPP1-like bacteriophage

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
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)
C	SCOP2B Superfamily	Homeodomain-like	8101823	3000001	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Homeodomain-like	8101823	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)
C	PI3_PI4_kinase	e3zqqC1	A: alpha arrays	X: Alpha helical domain of ribonucleotide reductases	H: Alpha helical domain of ribonucleotide reductases	T: Alpha helical domain of ribonucleotide reductases	F: PI3_PI4_kinase	ECOD (v295.2)
B	DHDPS	e3zqqB1	A: alpha arrays	X: Alpha-beta plaits	H: Phage tail protein-like	T: Transmembrane protein 14A	F: DHDPS	ECOD (v295.2)
A	PI3_PI4_kinase	e3zqqA1	A: alpha arrays	X: Alpha helical domain of ribonucleotide reductases	H: Alpha helical domain of ribonucleotide reductases	T: Alpha helical domain of ribonucleotide reductases	F: PI3_PI4_kinase	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	1.10.10.1400	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Terminase, small subunit, N-terminal DNA-binding domain, HTH motif	CATH (4.3.0)
C	6.10.140.2160	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)
B	6.10.140.2160	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)
A	1.10.10.1400	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Terminase, small subunit, N-terminal DNA-binding domain, HTH motif	CATH (4.3.0)
A	6.10.140.2160	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	TERMINASE SMALL SUBUNIT	DNA binding binding nucleic acid binding identical protein binding protein binding	cellular component organization organelle organization chromosome organization cellular process cellular component organization or biogenesis	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR038713	Terminase small subunit, N-terminal DNA-binding domain, HTH motif superfamily	Homologous Superfamily
A, B, C	IPR005335	Terminase small subunit	Family
A, B, C	IPR052404	SPP1-like_terminase	Unknown