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An autophagosome is a spherical structure with double layer membranes. [2] It is the key structure in macroautophagy , the intracellular degradation system for cytoplasmic contents (e.g., abnormal intracellular proteins , excess or damaged organelles , invading microorganisms).
[8] [9] [10] In macroautophagy (the most thoroughly researched form of autophagy), cytoplasmic components (like mitochondria) are targeted and isolated from the rest of the cell within a double-membrane vesicle known as an autophagosome, [11] [12] which, in time, fuses with an available lysosome, bringing its specialty process of waste ...
Omegasomes act as progenitors of autophagosome formation during the autophagy pathway. [14] There are various autophagosome mediators involved in autophagy, however it is the omegasome regulation of the pathway that provides a smooth transition of autophagosome formation, and enrichment of nutrients in the cells.
More cell surface receptors can bind to the particle in a zipper-like mechanism as the pathogen is surrounded, increasing the binding avidity. [10] Fc receptor (FcR), complement receptors (CR), mannose receptor and dectin-1 are phagocytic receptors, which means that they can induce phagocytosis if they are expressed in non-phagocytic cells such ...
MAP1LC3B is a member of the highly conserved ATG8 protein family. ATG8 proteins are present in all known eukaryotic organisms. The animal ATG8 family comprises three subfamilies: (i) microtubule-associated protein 1 light chain 3 (MAP1LC3); (ii) Golgi-associated ATPase enhancer of 16 kDa (GATE-16); and (iii) γ-amino-butyric acid receptor-associate protein ().
The ability of CMA to selectively degrade enzymes involved in the metabolism of free fatty acids (i.e. linoleic and linolic pathway) has proven key for activation of hematopoietic stem cells, [16] thus supporting a role for CMA in stem cell function. CMA activity is upregulated during differentiation of embryonic stem cells and contributed to ...
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Autophagic vacuolar myopathy (AVM) consists of multiple rare genetic disorders with common histological and pathological features on muscle biopsy. [1] The features highlighted are vacuolar membranes of the autophagic vacuoles having sarcolemmal characteristics and an excess of autophagic vacuoles. [2]