Cell Biology

... from active transport to vesicles

receptor-mediated endocytosis

Receptor-mediated endocytosis creates receptosomes. Cells invaginate proteins and other types of ligands that have attached to specific receptors on the plasma membrane.

1. First, the protein or ligand binds to a specific receptor, forming a coated pit ("coated pit endocytosis"). The coated pit is a specialized membranous region coated with clathrin, which provides stability and aids the transport process.

2. Next, the coated pit next forms a coated vesicle and, shedding its clathrin coat, joins with other coated pits to form a receptosome.

• A • adhesion • C • cell membranescellular adhesion moleculescellular signal transductioncentrioleschemotaxischloroplastcilia & flagellacommunicationconcentration gradientscytokine receptorscytoplasmcytoskeleton • E • energy transducersendoplasmic reticulumendosomesexosome • F • flagella & cilia • G • Golgi apparatusGPCRs • H • hormones • I • ion channels • L • lysosome • M • meiosismicrotubulesmitosismitochondrion • N • Nitric Oxideneurotransmissionneuronal interconnectionsnuclear membranenuclear pore • P • pinocytosisproteasomeprotein degradationpumps • R • receptor proteinsreceptor-mediated endocytosis • S • second messengerssignaling gradientssignal transductionspindlestructure • T • transporttwo-component systems • U • ubiquitin • V • vacuolevesicle

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. . . developing since 10/06/06