Annotations: 9CUY

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
U [auth N], V [auth M]	PF22479	Cyanophage baseplate Pam3 plug gp18 (Pam3_gp18)	Cyanophage baseplate Pam3 plug gp18	This family, previously known as DUF6983, represents Cyanophage baseplate Pam3 plug gp18 and related proteins. Gp18 has structural similarity to a component of the baseplate Complex for Myoviridae Phage XM1. The cyanophage Pam3 has a substantially si ...	This family, previously known as DUF6983, represents Cyanophage baseplate Pam3 plug gp18 and related proteins. Gp18 has structural similarity to a component of the baseplate Complex for Myoviridae Phage XM1. The cyanophage Pam3 has a substantially simpler molecular organisation than the prototypical, contractile-tail bacteriophage T4, but it retains the essential elements required for DNA injection. The baseplate of Pam3 contains six protein components: the trimeric spike gp20, the trimeric hub gp19, the baseplate wedge (six heterotriplexes of gp22-gp23), the plug of six gp18 monomers, and the fibers (12 trimers of gp24) [1]. The plug gp18 consists of two-layered beta-sheets and a C-terminal alpha-helix, resembling the immunoglobin fold. Each plug monomer is embedded between the two C-terminal helices of the tube initiator, forming a 'plug' to fix the core helical bundle of the wedge onto the hub [1]	Domain
Q [auth O], S [auth P]	PF11041	Bacteriophage baseplate wedge 1 protein (Phage_Wedge1)	Bacteriophage baseplate wedge 1 protein	-	Family
P [auth Y]	PF18352	Phage protein Gp138 N-terminal domain (Gp138_N)	Phage protein Gp138 N-terminal domain	This domain is found in the N-terminal domain of gene product 138 (gp138) in an unidentified bacteriophage. Gp138 is thought to be involved in the process of opening the host cell membrane during infection. The domain has an OB-fold with an intramole ...	This domain is found in the N-terminal domain of gene product 138 (gp138) in an unidentified bacteriophage. Gp138 is thought to be involved in the process of opening the host cell membrane during infection. The domain has an OB-fold with an intramolecular disulfide bond between C114 and C120 [1].	Domain
M [auth K], N [auth L]	PF21821	Dit-like phage tail protein (Dit_like)	Dit-like phage tail protein	This entry represents a large family of proteins that have a RIFT-like barrel structure which is related to the Dit phage protein from SPP1.	Domain
F [auth J], G [auth H], K [auth I], L [auth G]	PF11681	Bacteriophage PhiTE tail tube protein (Phage_Tube_PhiTE)	Bacteriophage PhiTE tail tube protein	This entry includes the tail tube protein of bacteriophage PhiTE that infects the plant pathogen Pectobacterium atrosepticum. The tube protein forms the rigid inner tube of the phage tail and consists of a primary eight-stranded beta-sandwich flanked ...	This entry includes the tail tube protein of bacteriophage PhiTE that infects the plant pathogen Pectobacterium atrosepticum. The tube protein forms the rigid inner tube of the phage tail and consists of a primary eight-stranded beta-sandwich flanked by a large alpha-helix. The luminal components of each tube protein's beta-sandwich intercalate with adjacent tube proteins in the hexameric disk to form a continuous 24-stranded beta-barrel on the internal surface of each ring. The inner tube lumen has a strong negative charge distribution, typical of bacteriophage DNA conduits. An extended beta-hairpin motif extends between strands 2 and 5 of the beta-sandwich and wraps around the tube, making contacts with loops from head distal tube subunits. The C-terminal arm features a second alpha-helix that wraps laterally around adjacent subunits and forms strong hydrophobic contacts with helices from the sheath D1 domain.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
W [auth n], X [auth m]	Sheath initiator protein	-	-	-
U [auth N], V [auth M]	Spacer protein	-	-	-
Q [auth O], S [auth P]	Wedge 1 protein	-	-	-
P [auth Y]	Putative baseplate assembly protein	-	-	-
O [auth X]	Hub protein	-	-	-
M [auth K], N [auth L]	Tube initiator protein	-	-	-
F [auth J], G [auth H], K [auth I], L [auth G]	Tail tube protein	-	-	-
C [auth A], D [auth C], E, H [auth B], I [auth D], C [auth A], D [auth C], E, H [auth B], I [auth D], J [auth F]	Tail sheath protein	-	-	-
EA [auth W]	Putative tape measure protein	-	virion assembly viral tail assembly viral process viral life cycle	-
BA [auth c], CA [auth a], DA [auth b], IA [auth f], JA [auth d], BA [auth c], CA [auth a], DA [auth b], IA [auth f], JA [auth d], KA [auth e]	Short tail fiber	-	virion attachment to host cell biological process involved in interspecies interaction between organisms adhesion of symbiont to host cell viral process viral life cycle adhesion of symbiont to host biological process involved in interaction with host biological process involved in symbiotic interaction	virus tail, fiber virus tail virion component
AA [auth h], FA [auth j], GA [auth k], HA [auth l], Y [auth g], AA [auth h], FA [auth j], GA [auth k], HA [auth l], Y [auth g], Z [auth i]	Putative tail fiber protein	-	-	-
A [auth T], B [auth S], R, T [auth U]	Wedge 2 protein	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
U [auth N], V [auth M]	IPR054252	Cyanophage baseplate Pam3 plug gp18	Domain
Q [auth O], S [auth P]	IPR021283	Bacteriophage baseplate wedge 1 protein	Family
P [auth Y]	IPR037026	Vgr protein, OB-fold domain superfamily	Homologous Superfamily
P [auth Y]	IPR041599	Phage protein Gp138 N-terminal domain	Domain
M [auth K], N [auth L]	IPR048494	Dit-like phage tail protein, N-terminal domain	Domain
F [auth J], G [auth H], K [auth I], L [auth G]	IPR021695	Structural protein ORF10, bacteriophage KPP10	Family
EA [auth W]	IPR013491	Tape measure protein N-terminal	Domain
BA [auth c], CA [auth a], DA [auth b], IA [auth f], JA [auth d], BA [auth c], CA [auth a], DA [auth b], IA [auth f], JA [auth d], KA [auth e]	IPR051934	Bacteriophage Tail Fiber Structural Protein	Family
BA [auth c], CA [auth a], DA [auth b], IA [auth f], JA [auth d], BA [auth c], CA [auth a], DA [auth b], IA [auth f], JA [auth d], KA [auth e]	IPR037053	Phage tail collar domain superfamily	Homologous Superfamily
BA [auth c], CA [auth a], DA [auth b], IA [auth f], JA [auth d], BA [auth c], CA [auth a], DA [auth b], IA [auth f], JA [auth d], KA [auth e]	IPR011083	Phage tail collar domain	Domain
BA [auth c], CA [auth a], DA [auth b], IA [auth f], JA [auth d], BA [auth c], CA [auth a], DA [auth b], IA [auth f], JA [auth d], KA [auth e]	IPR003343	Bacterial Ig-like domain, group 2	Domain
BA [auth c], CA [auth a], DA [auth b], IA [auth f], JA [auth d], BA [auth c], CA [auth a], DA [auth b], IA [auth f], JA [auth d], KA [auth e]	IPR008964	Invasin/intimin cell-adhesion fragments	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 R01GM157729.