CARDIOTOXIN II FROM TAIWAN COBRA VENOM, NAJA NAJA ATRA: STRUCTURE IN SOLUTION AND COMPARISION AMONG HOMOLOGOUS CARDIOTOXINSCARDIOTOXIN II FROM TAIWAN COBRA VENOM, NAJA NAJA ATRA: STRUCTURE IN SOLUTION AND COMPARISION AMONG HOMOLOGOUS CARDIOTOXINS
Structural highlights
1crf is a 1 chain structure with sequence from Naja atra. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
3SA2_NAJAT Basic protein that binds to cell membrane and depolarizes cardiomyocytes. It also shows lytic activities, but 2-fold less important than that of CTX-A4. It binds to the integrin alpha-V/beta-3 (ITGAV/ITGB3) with a moderate affinity. It may interact with sulfatides in the cell membrane which induces pore formation and cell internalization and is responsible for cytotoxicity in cardiomyocytes. It also may target the mitochondrial membrane and induce mitochondrial swelling and fragmentation.[1]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
↑Jang JY, Krishnaswamy T, Kumar S, Jayaraman G, Yang PW, Yu C. Comparison of the hemolytic activity and solution structures of two snake venom cardiotoxin analogues which only differ in their N-terminal amino acid. Biochemistry. 1997 Dec 2;36(48):14635-41. PMID:9398182 doi:10.1021/bi971107a