Katepsin B (EC 3.4.22.1, katepsin B1, katepsin II) je enzim.[1][2][3][4][5] Ovaj enzim katalizuje sledeću hemijsku reakciju

Katepsin B
Identifikatori
EC broj 3.4.22.1
CAS broj 9047-22-7
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB RCSB PDB PDBe PDBj PDBsum
Hidroliza proteina sa širokom specifičšću za peptidne veze. Preferentno dolazi do razlaganja -Arg-Arg- veza u malim molekulskim supstratima (po čeme se razlikuje od katepsina L).

Ovaj intraćelijski (lizozomalni) enzim pripada peptidaznoj familiji C1 (papainskoj familiji)

Reference uredi

  1. Bond, J.S. and Barrett, A.J. (1980). „Degradation of fructose-1,6-bisphosphate aldolase by cathepsin B. A further example of peptidyldipeptidase activity of this proteinase”. Biochem. J. 189: 17-25. PMID 7458901. 
  2. Barrett, A.J. and Kirschke, H. (1981). „Cathepsin B, cathepsin H and cathepsin L”. Methods Enzymol. 80: 535-561. PMID 7043200. 
  3. Polgár, L. and Csoma, C. (1987). „Dissociation of ionizing groups in the binding cleft inversely controls the endo- and exopeptidase activities of cathepsin B”. J. Biol. Chem. 262: 14448-14453. PMID 3312190. 
  4. Barrett, A.J., Buttle, D.J. and Mason, R.W. (1988). „Lysosomal cysteine proteinases”. ISI Atlas of Science. Biochemistry 1: 256-260. 
  5. Kirschke, H., Wikstrom, P. and Shaw, E. (1988). „Active center differences between cathepsins L and B: the S1 binding region”. FEBS Lett. 228: 128-130. PMID 3342870. 

Literatura uredi

Spoljašnje veze uredi