An Information Portal to 112722 Biological Macromolecular Structures

Structure of a SycH-YopH Chaperone-Effector Complex
Annotation data related to this entry.
  •   Protein Family Annotation: Pfam Classification   Hide
    Chain Pfam Accession Pfam Family Identifier Pfam Description Type Comment
    B PF09013   YopH_N YopH, N-terminal Domain The N-terminal domain of YopH is a compact structure composed of four alpha-helices and two beta-hairpins. Helices alpha-1 and alpha-3 are parallel to each other and antiparallel to helices alpha-2 and alpha-4. This domain targets YopH for secretion from the bacterium and translocation into eukaryotic cells, and has phosphotyrosyl peptide-binding activity, allowing for recognition of p130Cas and paxillin [1]. Source: Pfam  
    A PF05932   CesT Tir chaperone protein (CesT) family Domain This family consists of a number of bacterial sequences which are highly similar to the Tir chaperone protein in E. Coli. In many Gram-negative bacteria, a key indicator of pathogenic potential is the possession of a specialised type III secretion system, which is utilised to deliver virulence effector proteins directly into the host cell cytosol. Many of the proteins secreted from such systems require small cytosolic chaperones to maintain the secreted substrates in a secretion-competent state. CesT serves a chaperone function for the enteropathogenic Escherichia coli (EPEC) translocated intimin receptor (Tir) protein, which confers upon EPEC the ability to alter host cell morphology following intimate bacterial attachment [1]. This family also contains several DspF and related sequences from several plant pathogenic bacteria. The "disease-specific" (dsp) region next to the hrp gene cluster of Erwinia amylovora is required for pathogenicity but not for elicitation of the hypersensitive reaction. DspF and AvrF are small (16 kDa and 14 kDa) and acidic with predicted amphipathic alpha helices in their C termini; they resemble chaperones for virulence factors secreted by type III secretion systems of animal pathogens [2]. Source: Pfam  
  •   Gene Product Annotation: GO Terms   Hide
    Polymer Molecular Function Biological Process Cellular Component
    Putative yopH targeting protein (4GF3:A)
    • none
    Tyrosine-protein phosphatase yopH (4GF3:B)
    • none
  •   Structural Biology Knowledgebase Data Hide
Annotations in orange boxes have been gathered from external resources.