6J0N

Cryo-EM Structure of an Extracellular Contractile Injection System, baseplate in extended state, refined in C6 symmetry


Protein Family Annotation Pfam Database Homepage

ChainsAccessionIdentifierDescriptionCommentsSource
PF17482Phage tail sheath C-terminal domain (Phage_sheath_1C)Phage tail sheath C-terminal domainThis entry represents the C-terminal domain in a variety of phage tail sheath proteins [4].Domain
PF17482Phage tail sheath C-terminal domain (Phage_sheath_1C)Phage tail sheath C-terminal domainThis entry represents the C-terminal domain in a variety of phage tail sheath proteins [4].Domain
PF04984Phage tail sheath protein subtilisin-like domain (Phage_sheath_1)Phage tail sheath protein subtilisin-like domainThis entry represents the second domain in a variety of phage tail sheath proteins. According to ECOD this domain has a subtilisin-like structure.Domain
PF17482Phage tail sheath C-terminal domain (Phage_sheath_1C)Phage tail sheath C-terminal domainThis entry represents the C-terminal domain in a variety of phage tail sheath proteins [4].Domain
PF04984Phage tail sheath protein subtilisin-like domain (Phage_sheath_1)Phage tail sheath protein subtilisin-like domainThis entry represents the second domain in a variety of phage tail sheath proteins. According to ECOD this domain has a subtilisin-like structure.Domain
PF04965Baseplate wedge protein gp25 (GPW_gp25)Baseplate wedge protein gp25This family represents T4 phage gp25 protein and gp25-like proteins, found in several systems, including contractile tail bacteriophages, the type VI secretion system (T6SS) and R-type pyocins, which constitute a multiprotein tubular apparatus to att ...This family represents T4 phage gp25 protein and gp25-like proteins, found in several systems, including contractile tail bacteriophages, the type VI secretion system (T6SS) and R-type pyocins, which constitute a multiprotein tubular apparatus to attach to and penetrate host cell membranes. Gp25 is a component of the conserved wedge in the inner part of the baseplate and serves as a nucleus for sheath polymerisation, playing a critical role in sheath assembly and contraction [1,2]. The EPR motif (Glu-Pro-Arg, residues 85-87 of gp25) is conserved across all members of the family including orthologs from the RpoS-mediated general stress response system (called IraD) [3]. This motif interacts with the 'core bundle' composed of orthologs of T4 gp6 and gp7 proteins in contractile injection systems.
Domain
PF19266Contractile injection system tube protein (CIS_tube)Contractile injection system tube protein- Family
PF06841T4-like virus tail tube protein gp19 (Phage_T4_gp19)T4-like virus tail tube protein gp19- Family
PF06841T4-like virus tail tube protein gp19 (Phage_T4_gp19)T4-like virus tail tube protein gp19- Family