Budowa i funkcje białek błony lizosomalnej

The lysosomal membrane delimits the interial part of lysosomes containing the enzymes capable of degrading practically all cellular macromolecules, and actively participates as well in establishing an efficient environment for the degradation processes. 1. H+-ATPase - the main membrane protein complex ensures the low pH environment needed for efficient activity of lysosomal hydrolases. 2. Glycoproteins lamp2a are involved in specific degradation of proteins containing the KFERQ sequence (chaperone mediated autophagy) under condition of stress and starvation. 3. Specific lysosomal membrane proteins participate in export from and import to of low molecular weight compounds such as amino acids, dipeptides, sugars, nucleosides, or ions.