5A20

Structure of bacteriophage SPP1 head-to-tail interface filled with DNA and tape measure protein

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
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)
C	SCOP2B Superfamily	YqbG/phage connector protein-like	8104059	3001980	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	YqbG/phage connector protein-like	8104059	3001980	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Phage head-tail joining protein-like	8106666	3002861	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Phage head-tail joining protein-like	8106666	3002861	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	T6SS-like	8091258	3000580	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)
A	PF05133	e5a20A2	A: beta barrels	X: Barrel domain in upper collar protein (From Topology)	H: Barrel domain in upper collar protein (From Topology)	T: Barrel domain in upper collar protein	F: PF05133	ECOD (1.6)
A	PF05133	e5a20A1	A: alpha bundles	X: Alpha-helical domain in upper collar protein (From Topology)	H: Alpha-helical domain in upper collar protein (From Topology)	T: Alpha-helical domain in upper collar protein	F: PF05133	ECOD (1.6)
B	PF05133	e5a20B2	A: beta barrels	X: Barrel domain in upper collar protein (From Topology)	H: Barrel domain in upper collar protein (From Topology)	T: Barrel domain in upper collar protein	F: PF05133	ECOD (1.6)
B	PF05133	e5a20B1	A: alpha bundles	X: Alpha-helical domain in upper collar protein (From Topology)	H: Alpha-helical domain in upper collar protein (From Topology)	T: Alpha-helical domain in upper collar protein	F: PF05133	ECOD (1.6)
C	PF05135	e5a20C1	A: alpha arrays	X: Hypothetical protein YqbG-like (From Topology)	H: Hypothetical protein YqbG-like (From Topology)	T: Hypothetical protein YqbG-like	F: PF05135	ECOD (1.6)
D	PF05135	e5a20D1	A: alpha arrays	X: Hypothetical protein YqbG-like (From Topology)	H: Hypothetical protein YqbG-like (From Topology)	T: Hypothetical protein YqbG-like	F: PF05135	ECOD (1.6)
F	PF05521	e5a20F1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Phage tail proteins	F: PF05521	ECOD (1.6)
E	PF05521	e5a20E1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Phage tail proteins	F: PF05521	ECOD (1.6)
G	PF11367	e5a20G1	A: a+b two layers	X: Alpha-beta plaits	H: Phage tail protein-like (From Topology)	T: Phage tail protein-like	F: PF11367	ECOD (1.6)
H	PF06199	e5a20H1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Phage tail proteins	F: PF06199	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF05133	Phage portal protein, SPP1 Gp6-like (Phage_prot_Gp6)	Phage portal protein, SPP1 Gp6-like	-	Family
C, D	PF05135	Phage gp6-like head-tail connector protein (Phage_connect_1)	Phage gp6-like head-tail connector protein	This family of proteins contain head-tail connector proteins related to gp6 from bacteriophage HK97 [1]. A structure of this protein shows similarity to gp15 a well characterised connector component of bacteriophage SPP1 [1].	Domain
E, F	PF05521	Phage head-tail joining protein (Phage_H_T_join)	Phage head-tail joining protein	-	Family
G	PF11367	Protein of unknown function (DUF3168) (DUF3168)	Protein of unknown function (DUF3168)	-	Family
H	PF06199	Phage tail tube protein (Phage_tail_2)	Phage tail tube protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	PORTAL PROTEIN	-	symbiont genome ejection through host cell envelope biological process involved in interspecies interaction between organisms symbiont genome ejection through host cell envelope, long flexible tail mechanism symbiont entry into host cell viral process symbiont entry into host viral life cycle biological process involved in interaction with host biological process involved in symbiotic interaction virion assembly viral DNA genome packaging, headful viral genome packaging viral DNA genome packaging	viral procapsid virion component protein-containing complex viral capsid viral portal complex
C, D	15 PROTEIN	-	symbiont genome ejection through host cell envelope biological process involved in interspecies interaction between organisms symbiont genome ejection through host cell envelope, long flexible tail mechanism symbiont entry into host cell viral process symbiont entry into host viral life cycle biological process involved in interaction with host biological process involved in symbiotic interaction	virion component
E, F	HEAD COMPLETION PROTEIN GP16	-	symbiont genome ejection through host cell envelope biological process involved in interspecies interaction between organisms symbiont genome ejection through host cell envelope, long flexible tail mechanism symbiont entry into host cell viral process symbiont entry into host viral life cycle biological process involved in interaction with host biological process involved in symbiotic interaction	virion component
G	TAIL-TO-HEAD JOINING PROTEIN GP17	-	virion assembly viral tail assembly virus tail fiber assembly viral process viral life cycle	virus tail virion component
H	MAJOR TAIL PROTEIN GP17.1	-	symbiont genome ejection through host cell envelope biological process involved in interspecies interaction between organisms symbiont genome ejection through host cell envelope, long flexible tail mechanism symbiont entry into host cell viral process symbiont entry into host viral life cycle biological process involved in interaction with host biological process involved in symbiotic interaction virion assembly viral head-tail joining	virus tail, tube virus tail virion component

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR006428	Portal protein, SPP1-type	Family
A, B	IPR021145	Portal protein	Family
C, D	IPR021146	Phage gp6-like head-tail connector protein	Family
C, D	IPR047186	Head-tail connector protein gp6/gp15-like	Family
E, F	IPR008767	Bacteriophage SPP1, head-tail adaptor	Family
E, F	IPR038666	Bacteriophage SPP1, head-tail adaptor superfamily	Homologous Superfamily
G	IPR021508	Tail completion protein	Family
H	IPR011855	Phage major tail protein TP901-1	Family
H	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
H	IPR003961	Fibronectin type III	Domain
H	IPR036116	Fibronectin type III superfamily	Homologous Superfamily

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 R01GM133198.