OPAI_NEIGO Opacity protein opA54 Implicated in a number of adherence functions. OPA proteins are implicated in pathogenesis and are subject to phase variation. opaI MNPARKKPSLLFSSLLFSSLLFSSLLFSSLLFPSAAQAAGEGNGRGPYVQADLAYAYEHITHDYPEPTGTKKDKISTVSDYFRNIRTHSIHPRVSVGYDFGGWRIAADYARYRKWNNNKYSVNIKELLRNDNANSGGNKHLNIKTRKTEHRENGTFHAASSLGLSAVYDFDTGSRFKPYIGMRVAYGHVRHQVRSVQQETIAVTTYPQNAASSVTTNAPIRKLPHHESRSISSLGFGAVAGVGIDITPKLTLDAGYRYHNWGRLENTRFKTHEASLGVRYRF 282