Protein
Minor fimbrium tip subunit Mfa3
Organism
Porphyromonas gingivalis (strain ATCC 33277 / DSM 20709 / CIP 103683 / JCM 12257 / NCTC 11834 / 2561)
Function
Tip subunit of the minor fimbriae. These filamentous pili are attached to the cell surface; they mediate biofilm formation, adhesion onto host cells and onto other bacteria that are part of the oral microbiome (PubMed:24118823, PubMed:26001707). They play an important role in invasion of periodontal tissues and are recognized as major virulence factors. Fimbrium subunits from different strains have highly divergent sequences, and this correlates with pathogenicity (Probable).
Similarity
Belongs to the bacteroidetes fimbrillin superfamily. FimB/Mfa2 family.
Sequence
MMQLKKRYFALILLLFLWSGCDRGVDPQPDPLQPDVYLLVNARAAHTNGEESINMDAEDFEDRVHSLAMLVFDSNTGEKVAEHFSSSIGSGTSTYVFTVKLKPGQRDFFFVANIPNMQTAMASIVNKSDMNHFMQVFRDLDPIHYHNATNNNGFPMSRMYSNQTVTIGGTITQPLPFKPDGENNVKLQRVVAKLDVNIVEGVENLQKIELCNANVHYRLVPNQSEPIQFYGPVELRRVGATNQWLGYMPEAIVESTKWWGNTGNAENKPINFFRLTTRGGLVYDVPIITHEGAIPGGQYLPFAKGLLADKPSYTVYRNRHYIYRIKTLPDKIEVKYSICDWNIVTNDTYMGYGYNVGVDEQGNVTITNTMQNCDPHVVRLVAKNGAYFGSQPTDTSVEFTELANGASQTFKVNKDAVAVGSAYLEVYYNPDLNATGVVPDKVFIKK