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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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A novel clathrin homolog that co-distributes with cytoskeletal components functions in the trans-Golgi network.

A clathrin homolog encoded on human chromosome 22 (CHC22) displays distinct biochemistry, distribution and function compared with conventional clathrin heavy chain (CHC17), encoded on chromosome 17. CHC22 protein is upregulated during myoblast differentiation into myotubes and is expressed at high levels in muscle and at low levels in non-muscle cells, relative to CHC17. The trimeric CHC22 protein does not interact with clathrin heavy chain subunits nor bind significantly to clathrin light chains. CHC22 associates with the AP1 and AP3 adaptor complexes but not with AP2. In non-muscle cells, CHC22 localizes to perinuclear vesicular structures, the majority of which are not clathrin coated. Treatments that disrupt the actin-myosin cytoskeleton or affect sorting in the trans-Golgi network (TGN) cause CHC22 redistribution. Overexpression of a subdomain of CHC22 induces altered distribution of TGN markers. Together these results implicate CHC22 in TGN membrane traffic involving the cytoskeleton.[1]

References

  1. A novel clathrin homolog that co-distributes with cytoskeletal components functions in the trans-Golgi network. Liu, S.H., Towler, M.C., Chen, E., Chen, C.Y., Song, W., Apodaca, G., Brodsky, F.M. EMBO J. (2001) [Pubmed]
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