Intermediate cleaving peptidase 55

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Intermediate cleaving peptidase 55
Identifiers
EC number 3.4.11.26
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

Intermediate cleaving peptidase 55 (EC 3.4.11.26, Icp55, mitochondrial intermediate cleaving peptidase 55 kDa) is an enzyme.[1][2] This enzyme catalyses the following chemical reaction

The enzyme cleaves the Pro36-Pro37 bond of cysteine desulfurase (EC 2.8.1.7) removing three amino acid residues (Tyr-Ser-Pro) from the N-terminus after cleavage by mitochondrial processing peptidase.

Icp55 removes the destabilizing N-terminal amino acid residues.

References[edit]

  1. ^ Naamati, A.; Regev-Rudzki, N.; Galperin, S.; Lill, R.; Pines, O. (2009). "Dual targeting of Nfs1 and discovery of its novel processing enzyme, Icp55". J. Biol. Chem. 284: 30200–30208. PMC 2781575Freely accessible. PMID 19720832. doi:10.1074/jbc.M109.034694. 
  2. ^ Vogtle, F.N.; Wortelkamp, S.; Zahedi, R.P.; Becker, D.; Leidhold, C.; Gevaert, K.; Kellermann, J.; Voos, W.; Sickmann, A.; Pfanner, N.; Meisinger, C. (2009). "Global analysis of the mitochondrial N-proteome identifies a processing peptidase critical for protein stability". Cell. 139: 428–439. PMID 19837041. doi:10.1016/j.cell.2009.07.045. 

External links[edit]