has role protective antigen role protective antigen Neisseria meningitidis protein ExbB protein A total of 11 meningococcal proteins that are necessary for establishing systemic infection were expressed as recombinant antigens and assessed for their ability to protect mice against live bacterial challenge against N. meningitidis; ExbB, which is required for iron acquisition, elicited protective immunity [PubMed: 15964482]. Allen Xiang Oliver He Protegen ID: 601; NCBI Gene GI: 903370; NCBI Protein GI: 15677575; NCBI Protein Accession: NP_274732; NCBITaxon: 122586