Lysyl endopeptidase

Lysyl endopeptidase (EC 3.4.21.50, Achromobacter proteinase I, Achromobacter lyticus alkaline proteinase I, protease I, achromopeptidase, lysyl bond specific proteinase, and caseinase) is an enzyme.[1][2][3][4][5][6] This enzyme catalyses the following chemical reaction

Preferential cleavage: Lys-, including -Lys-Pro-
Lysyl endopeptidase (R)
Identifiers
EC number3.4.21.50
CAS number123175-82-6
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

This enzyme is isolated from Lysobacter enzymogenes.

It is produced by the human body and by Achromobacter lyticus[7] that can help break down the protein casein in milk into smaller peptides and amino acids.[8]

References

  1. Masaki T, Tanabe M, Nakamura K, Soejima M (July 1981). "Studies on a new proteolytic enzyme from A chromobacter lyticus M497-1. I. Purification and some enzymatic properties". Biochimica et Biophysica Acta. 660 (1): 44–50. doi:10.1016/0005-2744(81)90106-6. PMID 6791693.
  2. Masaki T, Fujihashi T, Nakamura K, Soejima M (July 1981). "Studies on a new proteolytic enzyme from Achromobacter lyticus M497-1. II. specificity and inhibition studies of Achromobacter protease I". Biochimica et Biophysica Acta. 660 (1): 51–5. doi:10.1016/0005-2744(81)90107-8. PMID 6168293.
  3. Jekel PA, Weijer WJ, Beintema JJ (October 1983). "Use of endoproteinase Lys-C from Lysobacter enzymogenes in protein sequence analysis". Analytical Biochemistry. 134 (2): 347–54. doi:10.1016/0003-2697(83)90308-1. PMID 6359954.
  4. Elliott BW, Cohen C (August 1986). "Isolation and characterization of a lysine-specific protease from Pseudomonas aeruginosa". The Journal of Biological Chemistry. 261 (24): 11259–65. PMID 3090046.
  5. Ohara T, Makino K, Shinagawa H, Nakata A, Norioka S, Sakiyama F (December 1989). "Cloning, nucleotide sequence, and expression of Achromobacter protease I gene". The Journal of Biological Chemistry. 264 (34): 20625–31. PMID 2684982.
  6. Tsunasawa S, Masaki T, Hirose M, Soejima M, Sakiyama F (March 1989). "The primary structure and structural characteristics of Achromobacter lyticus protease I, a lysine-specific serine protease". The Journal of Biological Chemistry. 264 (7): 3832–9. PMID 2492988.
  7. "BRENDA - Information on EC 3.4.21.50 - lysyl endopeptidase". www.brenda-enzymes.org. Retrieved 2018-05-28.
  8. "Caseinase Definition and Examples - Biology Online Dictionary". 7 October 2019.
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