noun, plural: signal peptidases
Several signal peptidases have been found both in eukaryotes and prokaryotes. In eukaryotic cell, the signal peptidases are found at the rough endoplasmic reticulum (presumably at the luminal side), at the mitochondrion, plasma membrane, and chloroplasts. In prokaryotes, they are in the prokaryotic plasma membrane.
Examples of signal peptidases include:
- Signal peptidase I - (Spase I, or leader peptidase) the first to be purified; prokaryotic signal peptidase at the bacterial plasma membrane
- Signal peptidase II - (Spase II); prokaryotic signal peptidase at the bacterial plasma membrane
- signal peptidase complex - (SPC) at the endoplasmic reticulum of canine pancreatic cells
- Hen oviduct signal peptidase - at the endoplasmic reticulum
- Yeast signal peptidase - at the endoplasmic reticulum