Annotations: 8DGF

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
H	Head-tail_con_2nd	e8dgfH2	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: Head-tail_con_2nd	ECOD (1.6)
H	Head-tail_con_1st	e8dgfH1	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: Head-tail_con_1st	ECOD (1.6)
G	Head-tail_con_2nd	e8dgfG1	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: Head-tail_con_2nd	ECOD (1.6)
G	Head-tail_con_1st	e8dgfG2	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: Head-tail_con_1st	ECOD (1.6)
F	Head-tail_con_2nd	e8dgfF2	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: Head-tail_con_2nd	ECOD (1.6)
F	Head-tail_con_1st	e8dgfF1	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: Head-tail_con_1st	ECOD (1.6)
E	Head-tail_con_2nd	e8dgfE1	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: Head-tail_con_2nd	ECOD (1.6)
E	Head-tail_con_1st	e8dgfE2	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: Head-tail_con_1st	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (utative)
B	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
E, F, G, H	PF12236	Bacteriophage head to tail connecting protein (Head-tail_con)	Bacteriophage head to tail connecting protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E, F, G, H	Portal protein	-	virion assembly viral process viral life cycle viral genome packaging viral DNA genome packaging symbiont genome ejection through host cell envelope biological process involved in interspecies interaction between organisms symbiont entry into host cell symbiont entry into host symbiont genome ejection through host cell envelope, short tail mechanism biological process involved in interaction with host biological process involved in symbiotic interaction	protein-containing complex viral capsid virion component viral portal complex
A, B, C, D	ATP-binding protein Avs4	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E, F, G, H	IPR038995	Portal protein, Caudovirales	Family
E, F, G, H	IPR020991	Head-to-tail connector protein, podovirus-type	Family

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A, B, C, D	FME	Parent Component: MET RESID: AA0021 , AA0566 PSI-MOD : N-formyl-L-methionine residue MOD:00030 , N-formyl-L-methionine (Met) MOD:00482 , N-[(L-histidin-1'-yl)methyl]-L-methionine (fMet) MOD:01890 , N-[(L-histidin-1'-yl)methyl]-L-methionine (Met) MOD:01891

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.