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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 ...
Mechanism of clathrin-dependent endocytosis. 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).
The clathrin triskelion is composed of three clathrin heavy chains interacting at their C-termini, each ~190 kDa heavy chain has a ~25 kDa light chain tightly bound to it. The three heavy chains provide the structural backbone of the clathrin lattice, and the three light chains are thought to regulate the formation and disassembly of a clathrin ...
Clathrin-associated protein complexes are believed to interact with the cytoplasmic tails of membrane proteins, leading to their selection and concentration. Therefore, adaptor proteins are responsible for the recruitment of cargo molecules into a growing clathrin-coated pits. [ 2 ]
The different types of endocytosis. Endocytosis is a cellular process in which substances are brought into the cell. The material to be internalized is surrounded by an area of cell membrane, which then buds off inside the cell to form a vesicle containing the ingested materials.
AP-2 complex. The AP2 adaptor complex is a multimeric protein that works on the cell membrane to internalize cargo in clathrin-mediated endocytosis. [1] It is a stable complex of four adaptins which give rise to a structure that has a core domain and two appendage domains attached to the core domain by polypeptide linkers.
The clathrin-independent carrier pathway is the main pathway to endocytose cargo and relies heavily GPI-anchored proteins, integrins, and proteins to create membrane tension and fluidity. Crescent shaped tubular clathrin-independent carriers (CLICs) mature into glycosylphosphatidylinositol (GPI)-anchored protein-enriched early endocytic ...
Clathrin, light chain B is a protein in humans that is encoded by the CLTB gene. [5]Clathrin is a large, soluble protein composed of heavy and light chains. It functions as the main structural component of the lattice-type cytoplasmic face of coated pits and coated vesicles which entrap specific macromolecules during receptor-mediated endocytosis.