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Clathrin-coated vesicles (CCVs) selectively sort cargo at the cell membrane, trans-Golgi network, and endosomal compartments for multiple membrane traffic pathways. After a vesicle buds into the cytoplasm, the coat rapidly disassembles, allowing the clathrin to recycle while the vesicle gets transported to a variety of locations.
Endocytosis pathways can be subdivided into four categories: namely, receptor-mediated endocytosis (also known as clathrin-mediated endocytosis), caveolae, pinocytosis, and phagocytosis. [3] Clathrin-mediated endocytosis is mediated by the production of small (approx. 100 nm in diameter) vesicles that have a morphologically characteristic coat ...
While clathrin-coated endocytosis is the most efficient and dominant means of cellular cargo entry, endocytic pathways can operate without the presence of the clathrin triskelion. In the absence of clathrin in a plasma membrane, there are many elements of response that allow for the internalization of essential molecules for cellular function.
Receptor-mediated endocytosis (RME), also called clathrin-mediated endocytosis, is a process by which cells absorb metabolites, hormones, proteins – and in some cases viruses – by the inward budding of the plasma membrane (invagination).
Clathrin heavy chain 1 is a protein that in humans is encoded by the CLTC gene. [5] [6] Clathrin is a major protein component of the cytoplasmic face of intracellular organelles, called coated vesicles and coated pits. These specialized organelles are involved in the intracellular trafficking of receptors and endocytosis of a variety of ...
Clathrin coats contain both clathrin (acts as a scaffold) and adaptor complexes that link clathrin to receptors in coated vesicles. Clathrin-associated protein complexes are believed to interact with the cytoplasmic tails of membrane proteins, leading to their selection and concentration.
Clathrin-independent carriers (CLICs) are prevalent tubulovesicular membranes responsible for non-clathrin mediated endocytic events. They appear to endocytose material into GPI-anchored protein -enriched early endosomal compartment ( GEECs ).
There are three types of vesicle coats: clathrin, COPI and COPII. The various types of coat proteins help with sorting of vesicles to their final destination. Clathrin coats are found on vesicles trafficking between the Golgi and plasma membrane, the Golgi and endosomes and the plasma membrane and endosomes. COPI coated vesicles are responsible ...