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CD59

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Template:PBB CD59 glycoprotein also known as MAC-inhibitory protein (MAC-IP), membrane inhibitor of reactive lysis (MIRL), protectin, or HRF is a protein that in humans is encoded by the CD59 gene.[1]

CD59 attaches to host cells via a glycophosphatidylinositol (GPI) anchor. When complement activation leads to deposition of C5b678 on host cells, CD59 can prevent C9 from polymerizing and forming the complement membrane attack complex.[2] Mutations affecting GPI that reduce expression of CD59 and decay-accelerating factor on red blood cells result in paroxysmal nocturnal hemoglobinuria.[3]

Viruses such as HIV, human cytomegalovirus and vaccinia incorporate host cell CD59 into their own viral envelope to prevent lysis by complement.[4]

References

  1. ^ "Entrez Gene: CD59 molecule, complement regulatory protein".
  2. ^ Huang Y, Qiao F, Abagyan R, Hazard S, Tomlinson S (September 2006). "Defining the CD59-C9 binding interaction". J. Biol. Chem. 281 (37): 27398–27404. doi:10.1074/jbc.M603690200. PMID 16844690.{{cite journal}}: CS1 maint: multiple names: authors list (link) CS1 maint: unflagged free DOI (link)
  3. ^ Parker C, Omine M, Richards S; et al. (2005). "Diagnosis and management of paroxysmal nocturnal hemoglobinuria". Blood. 106 (12): 3699–709. doi:10.1182/blood-2005-04-1717. PMC 1895106. PMID 16051736. {{cite journal}}: Explicit use of et al. in: |author= (help)CS1 maint: multiple names: authors list (link)
  4. ^ Bohana-Kashtan O, Ziporen L, Donin N, Kraus S, Fishelson Z (July 2004). "Cell signals transduced by complement". Mol. Immunol. 41 (6–7): 583–597. doi:10.1016/j.molimm.2004.04.007. PMID 15219997.{{cite journal}}: CS1 maint: multiple names: authors list (link)

Further reading