Cargo binding promotes KDEL receptor clustering at the mammalian cell surface

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Cargo binding promotes KDEL receptor clustering at the mammalian cell surface

Transmembrane receptor clustering is a ubiquitous phenomenon in pro- and eukaryotic cells to physically sense receptor/ligand interactions and subsequently translate an exogenous signal into a cellular response. Despite that receptor cluster formation has been described for a wide variety of receptors, ranging from chemotactic receptors in bacteria to growth factor and neurotransmitter receptor...

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The erd2 protein is the receptor responsible for recycling proteins bearing the carboxyl-terminal sequence KDEL (single-letter amino acid code) to the endoplasmic reticulum, following their loss from that organelle by the process of forward transport. To study the interaction of erd2p with the sequence KDEL we have reconstituted binding of erd2p to its ligand in vitro. Binding in vitro exhibits...

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We have isolated a cDNA clone (mERD2) for the mammalian (bovine) homologue of the yeast ERD2 gene, which codes for the yeast HDEL receptor. The deduced amino acid sequence bears extensive homology to its yeast counterpart and is almost identical to a previously described human sequence. The sequence predicts a very hydrophobic protein with multiple membrane spanning domains, as confirmed by ana...

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Identification of amino acids in the binding pocket of the human KDEL receptor.

Retention of soluble proteins in the endoplasmic reticulum is dependent on their interaction with the KDEL (Lys-Asp-Glu-Leu) receptor in the Golgi apparatus and their subsequent retrieval back to the endoplasmic reticulum. We have studied the three-dimensional organization of the human KDEL receptor using site-directed mutagenesis and sulfhydryl-specific labeling. We have identified four amino ...

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ژورنال

عنوان ژورنال: Scientific Reports

سال: 2016

ISSN: 2045-2322

DOI: 10.1038/srep28940