Protein Family Models

This short motif directs methylation of the conserved phenylalanine residue. It is most often found at the N-terminus of pilins and other proteins involved in secretion, see Pfam:PF00114, Pfam:PF05946, Pfam:PF02501 and Pfam:PF07596. (from Pfam)

Date:

2024-08-14

PilV family protein

Date:

2017-03-02

Pilus systems categorized as type IV pilins differ greatly from one another, with some showing greater similarty to type II or type III secretion systems than to each other. Members of this protein family represent the PilV protein of type IV pilus systems as found in Pseudomonas aeruginosa PAO1, Pseudomonas syringae DC3000, Neisseria meningitidis MC58, Xylella fastidiosa 9a5c, etc.

Gene:

pilV

Date:

2019-09-10

This model describes many but not all examples of the N-terminal region of bacterial proteins that resemble type IV pilins at their N-terminus, with a cleavage site G^FxxxE followed by a hydrophobic stretch. The new N-terminal residue, usually Phe, is methylated. Separate domains of the prepilin peptidase appear responsible for cleavage and methylation. Proteins with this N-terminal region include type IV pilins and other components of pilus biogenesis, competence proteins, and type II secretion proteins. Typically several proteins in a single operon have this N-terminal domain. The N-terminal cleavage and methylation site is described by PROSITE motif PS00409 as [KRHEQSTAG]-G-[FYLIVM]-[ST]-[LT]-[LIVP]-E-[LIVMFWSTAG](14).

Date:

2019-09-10