Implicated in a number of adherence functions. OPA proteins are implicated in pathogenesis and are subject to phase variation. ASEDGGRGPYVQADLAYAYEHITHDYPEPTAPNKNKISTVSDYFRNIRTRSVHPRVSVGYDFGGWRIAADYARYRKWNNNKYSVSIKELLRNKGNGNRTDLKAENQENGTFHAVSSLGLSAVYDFKLNDKFKPYIGARVAYGHVRHSIDSTKKTTEVTTILHGPGTTPTVYPGKNTQDAHRESDSIRRVGLGAVAGVGIDITPNLTLDAGYRYHYWGRLENTRFKTHEASLGVRYRF OPAK_NEIGO opaK Opacity protein opA57 (Fragment) 237