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Structural insights into the architecture and membrane interactions of the conserved COMMD proteins

Elife. 2018-08; 
Healy MD, Hospenthal MK, Hall RJ, Chandra M, Chilton M, Tillu V, Chen KE, Celligoi DJ, McDonald FJ, Cullen PJ, Lott JS, Collins BM, Ghai R.
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摘要

The COMMD proteins are a conserved family of proteins with central roles in intracellular membrane trafficking and transcription. They form oligomeric complexes with each other and act as components of a larger assembly called the CCC complex, which is localized to endosomal compartments and mediates the transport of several transmembrane cargos. How these complexes are formed however is completely unknown. Here, we have systematically characterised the interactions between human COMMD proteins, and determined structures of COMMD proteins using X-ray crystallography and X-ray scattering to provide insights into the underlying mechanisms of homo- and heteromeric assembly. All COMMD proteins possess an α-helical... More

关键词

CCC complex; Commander complex; cell biology; copper metabolism Murr1 domain containing (COMMD); endosome; human; membrane trafficking; molecular biophysics; retriever; structural biology