MeSH definition : A selective type of autophagy in which a specific set of cytosolic proteins are moved
across the membrane of the LYSOSOMES by protein translocation, rather than by invagination
of the lysosomal membrane. The proteins that will be degraded by chaperone-mediated
autophagy (CMA) contain a CMA-targeting motif that, when exposed, is recognized by
the cytosolic chaperone HSPA8 (aka Hsc70) and cochaperones which deliver the protein
to LAMP2A monomers on the lysosome cell surface for translocation via the LAMP2A translocation
complex. CMA is distinguished from CHAPERONE-ASSISTED-SELECTIVE AUTOPHAGY - a type
of selective MACROAUTOPHAGY.;
A selective type of autophagy in which a specific set of cytosolic proteins are moved
across the membrane of the LYSOSOMES by protein translocation, rather than by invagination
of the lysosomal membrane. The proteins that will be degraded by chaperone-mediated
autophagy (CMA) contain a CMA-targeting motif that, when exposed, is recognized by
the cytosolic chaperone HSPA8 (aka Hsc70) and cochaperones which deliver the protein
to LAMP2A monomers on the lysosome cell surface for translocation via the LAMP2A translocation
complex. CMA is distinguished from CHAPERONE-ASSISTED-SELECTIVE AUTOPHAGY - a type
of selective MACROAUTOPHAGY.