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The protein encoded by this gene may control steps in the cycling of proteins through the trans-Golgi network to endosomes, lysosomes and the plasma membrane. Mutations in this gene cause the autosomal recessive disorder, chorea acanthocytosis. Alternative splicing of this gene results in multiple transcript variants. [7]
Protein targeting or protein sorting is the biological mechanism by which proteins are transported to their appropriate destinations within or outside the cell. [ 1 ] [ 2 ] [ note 1 ] Proteins can be targeted to the inner space of an organelle , different intracellular membranes , the plasma membrane , or to the exterior of the cell via secretion .
Trans-Golgi network integral membrane protein 2 is a protein that in humans is encoded by the TGOLN2 gene. [3] [4] References Further reading. This page was last ...
As well as the location of the cis and trans Golgi network. The cis Golgi network is the first step in the cisternal structure of a protein being packaged, while the trans Golgi network is the last step in the cisternal structure when the vesicle is being transferred to either the lysosome, the cell surface or the secretory vesicle.
VPS35 binds with other proteins to form the retromer, an evolutionarily conserved complex that plays a major role in transmembrane protein recycling from endosomes to the trans-Golgi network . [1] [6] [7] [8] VPS35 itself folds into a secondary structure that represents an α-helical solenoid, containing 34 α-helix repeats. [16]
Retromer is a complex of proteins that has been shown to be important in recycling transmembrane receptors from endosomes to the trans-Golgi network (TGN) and directly back to the plasma membrane. Mutations in retromer and its associated proteins have been linked to Alzheimer's and Parkinson's diseases.
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.
Molecules are also transported to endosomes from the trans Golgi network and either continue to lysosomes or recycle back to the Golgi apparatus. Endosomes can be classified as early, sorting, or late depending on their stage post internalization. [1] Endosomes represent a major sorting compartment of the endomembrane system in cells. [2]