Neisserial heparin binding antigen

UniProtKB accession:  Q9JPP1

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UniProtKB description:  A major human immunogenic protein detected in patients recovering from meningitidis, where it induces bactericidal antibodies (PubMed:30133484) (By similarity). Binds human cells, heparin and heparan sulfate proteoglycan in vitro via the Arg-rich motif. Heparin-binding to this protein protects bacteria against killing by bactericidal antibodies (serum killing). The bacteria binds a number of human extracellular sialyated and/or sulfated glycans via this protein, including chondroitin sulfate, heparin and ganglioside GT3. Binds DNA non-specifically (By similarity).