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The Golgi apparatus (/ ˈ ɡ ɒ l dʒ i /), also known as the Golgi complex, Golgi body, or simply the Golgi, is an organelle found in most eukaryotic cells. [1] Part of the endomembrane system in the cytoplasm , it packages proteins into membrane-bound vesicles inside the cell before the vesicles are sent to their destination.
The Golgi matrix is a collection of proteins involved in the structure and function of the Golgi apparatus. [1] [2] [3] The matrix was first isolated in 1994 as an amorphous collection of 12 proteins that remained associated together in the presence of detergent (which removed Golgi membranes) and 150 m M NaCl (which removed weakly associated proteins). [4]
The Golgi apparatus, which participates in glycosylation and transport of proteins and lipids in the secretory pathway, consists of a series of stacked cisternae (flattened membrane sacs). Interactions between the Golgi and microtubules are thought to be important for the reorganization of the Golgi after it fragments during mitosis. [ 6 ]
Golgi cell circuit functions also seem to be regulated by metabotropic glutamate receptors. Golgi cells possess mGluR2 receptors, [ 12 ] and when these receptors are activated, an inward rectifier K current is enhanced, aiding in the Golgi cell's silencing after a period of intensive granule cell-Golgi cell transmission. [ 13 ]
The conserved oligomeric Golgi complex (COG) is a multiprotein complex found in the Golgi apparatus structure and involved in intracellular transport and glycoprotein modification. [ 1 ] Earlier names for this complex were: the Golgi transport complex (GTC), the LDLC complex, which is involved in glycosylation reactions, and the SEC34 complex ...
ATP6V0A2 acidifies the medial- and trans-Golgi so that their resident enzymes (e.g. glycosidases and glycosyltransferases) function properly. [7] Therefore, mutations in the ATP6V0A2 gene reduce the ability of ATP6V0A2 to produce the necessary pH gradient for these glycosylation enzymes, which results in abnormal N- and O-linked glycosylation.
Conserved oligomeric Golgi complex subunit 5 is a protein that in humans is encoded by the COG5 gene. [ 5 ] [ 6 ] [ 7 ] Multiprotein complexes are key determinants of Golgi apparatus structure and its capacity for intracellular transport and glycoprotein modification.
Golgi membrane protein 1 (GOLM1) also known as Golgi phosphoprotein 2 or Golgi membrane protein GP73 is a protein that in humans is encoded by the GOLM1 gene. [ 5 ] [ 6 ] [ 7 ] Two alternatively spliced transcript variants encoding the same protein have been described for this gene.