Protein
B-type flagellar hook-associated protein 2
Organism
Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)
Function
Required for the morphogenesis and for the elongation of the flagellar filament by facilitating polymerization of the flagellin monomers at the tip of growing filament. Forms a capping structure, which prevents flagellin subunits (transported through the central channel of the flagellum) from leaking out without polymerization at the distal end. Essential for motility. Responsible for adhesion to mucin, which is the initial event in colonization by this organism of the airways of cystic fibrosis patients.
Similarity
Belongs to the FliD family.
Sequence
MAGISIGVGSTDYTDLVNKMVNLEGAAKTNQLATLEKTTTTRLTALGQFKSAISAFQTALTALNSNAVFMARTAKSSNEDILKASATQSAVAGTYQIQVNSLATSSKIALQAIADPANAKFNSGTLNISVGDTKLPAITVDSSNNTLAGMRDAINQAGKEAGVSATIITDNSGSRLVLSSTKTGDGKDIKVEVSDDGSGGNTSLSQLAFDPATAPKLSDGAAAGYVTKAANGEITVDGLKRSIASNSVSDVIDGVSFDVKAVTEAGKPITLTVSRDDAGVKDNVKKFVEAYNTLTKFINEQTVVTKVGEDKNPVTGALLGDASVRALVNTMRSELIASNENGSVRNLAALGITTTKDGTLEIDEKKLDKAISADFEGVASYFTGDTGLAKRLGDKMKPYTDAQGILDQRTTTLQKTLSNVDTQKADLAKRLAALQEKLTTQFNLLSAMQDEMTKRQKSITDNLASLPYGSGKKT