Signal peptidase II

Signal peptidase II
Identifiers
EC number 3.4.23.36
CAS number 171715-14-3
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

Signal peptidase II (EC 3.4.23.36, premurein-leader peptidase, prolipoprotein signal peptidase, leader peptidase II, premurein leader proteinase) is an enzyme.[1][2][3]

This enzyme catalyses a chemical reaction. It releases signal peptides from murein prolipoprotein and other bacterial membrane prolipoproteins. It also hydrolyses -Xaa-Yaa-Zaa-(S,diacylglyceryl)Cys-, in which Yaa (Ala or Ser) and Zaa (Gly or Ala) have small neutral sidechains, and Xaa is hydrophobic (preferably Leu).

This enzyme is present in bacterial inner membranes.

References

  1. Dev IK, Ray PH (June 1990). "Signal peptidases and signal peptide hydrolases". Journal of Bioenergetics and Biomembranes. 22 (3): 271–90. doi:10.1007/bf00763168. PMID 2202720.
  2. Zhao XJ, Wu HC (March 1992). "Nucleotide sequence of the Staphylococcus aureus signal peptidase II (lsp) gene". FEBS Letters. 299 (1): 80–4. doi:10.1016/0014-5793(92)80105-p. PMID 1544479.
  3. Sankaran K, Wu HC (1995). "Bacterial prolipoprotein signal peptidase". Methods in Enzymology. 248: 169–80. doi:10.1016/0076-6879(95)48014-5. PMID 7674920.
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