SUPERFAMILY 1.75 HMM library and genome assignments server

Baseplate structural protein gp11 superfamily

SCOP classification
Root:   SCOP hierarchy in SUPERFAMILY [ 0] (11)
Class:   Alpha and beta proteins (a+b) [ 53931] (376)
Fold:   Baseplate structural protein gp11 [ 56557]
Superfamily:   Baseplate structural protein gp11 [ 56558]
Families:   Baseplate structural protein gp11 [ 56559]

Superfamily statistics
Genomes (1) Uniprot 2014_06 PDB chains (SCOP 1.75)
Domains 1 56 1
Proteins 1 56 1

Functional annotation
General category coiled coil
Detailed category The code refers to a Trimeric_coiled_coils in the CC+ database. Please click on the link for more information and to visit the CC+ website.

Function annotation of SCOP domain superfamilies

InterPro annotation
Cross references IPR014791 SSF56558 Protein matches

The bacteriophage baseplate controls host cell recognition, attachment, tail sheath contraction and viral DNA ejection. The baseplate is a multi-subunit assembly at the distal end of the tail, which is composed of long and short tail fibres [PubMed12923574]. The tail region is responsible for attachment to the host bacteria during infection: long tail fibres enable host receptor recognition, while irreversible attachment is via short tail fibres. Recognition and attachment induce a conformational transition of the baseplate from a hexagonal to a star-shaped structure. In viruses such as Bacteriophage T4, GP11 acts as a structural protein to connect the short tail fibres to the baseplate, while GP9 connects the baseplate with the long tail fibres. Both GP9 and GP11 are trimers. Each GP11 monomer consists of three domains, which are entwined together in the trimer: the N-terminal domains of the three monomers form a central, trimeric, parallel coiled coil surrounded by the entwined middle finger domains; the C-terminal domains appear to be responsible for trimerisation.

InterPro database

PDBeMotif information about ligands, sequence and structure motifs
Cross references PDB entries
Ligand binding statistics
Nucleic-acid binding statistics
Occurrence of secondary structure elements
Occurrence of small 3D structural motifs

PDBeMotif resource

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Internal database links

Browse genome assignments for this superfamily. The SUPERFAMILY hidden Markov model library has been used to carry out SCOP domain assignments to all genomes at the superfamily level.

Alignments of sequences to 1 models in this superfamily are available by clicking on the 'Alignments' icon above. PDB sequences less than 40% identical are shown by default, but any other sequence(s) may be aligned. Select PDB sequences, genome sequences, or paste in or upload your own sequences.

Browse and view proteins in genomes which have different domain combinations including a Baseplate structural protein gp11 domain.

Examine the distribution of domain superfamilies, or families, across the major taxonomic kingdoms or genomes within a kingdom. This gives an immediate impression of how superfamilies, or families, are restricted to certain kingdoms of life.

Explore domain occurrence network where nodes represent genomes and edges are domain architectures (shared between genomes) containing the superfamily of interest.

There are 1 hidden Markov models representing the Baseplate structural protein gp11 superfamily. Information on how the models are built, and plots showing hydrophobicity, match emmission probabilities and insertion/deletion probabilities can be inspected.

Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation · Internal database links ]