Required for the retention of luminal endoplasmic reticulum proteins. Determines the specificity of the luminal ER protein retention system. Also required for normal vesicular traffic through the Golgi. Drosophila melanogaster (taxid: 7227)
>sp|Q5XHA2|ERD21_XENTR ER lumen protein retaining receptor 1 OS=Xenopus tropicalis GN=kdelr1 PE=2 SV=1
Required for the retention of luminal endoplasmic reticulum proteins. Determines the specificity of the luminal ER protein retention system. Also required for normal vesicular traffic through the Golgi. This receptor recognizes K-D-E-L.
Xenopus tropicalis (taxid: 8364)
>sp|P33946|ERD21_BOVIN ER lumen protein retaining receptor 1 OS=Bos taurus GN=KDELR1 PE=2 SV=2
Required for the retention of luminal endoplasmic reticulum proteins. Determines the specificity of the luminal ER protein retention system. Also required for normal vesicular traffic through the Golgi. This receptor recognizes K-D-E-L.
Bos taurus (taxid: 9913)
>sp|Q569A6|ERD21_RAT ER lumen protein retaining receptor 1 OS=Rattus norvegicus GN=Kdelr1 PE=2 SV=1
Required for the retention of luminal endoplasmic reticulum proteins. Determines the specificity of the luminal ER protein retention system. Also required for normal vesicular traffic through the Golgi. This receptor recognizes K-D-E-L.
Rattus norvegicus (taxid: 10116)
>sp|Q99JH8|ERD21_MOUSE ER lumen protein retaining receptor 1 OS=Mus musculus GN=Kdelr1 PE=2 SV=1
Required for the retention of luminal endoplasmic reticulum proteins. Determines the specificity of the luminal ER protein retention system. Also required for normal vesicular traffic through the Golgi. This receptor recognizes K-D-E-L.
Mus musculus (taxid: 10090)
>sp|P24390|ERD21_HUMAN ER lumen protein retaining receptor 1 OS=Homo sapiens GN=KDELR1 PE=1 SV=1
Required for the retention of luminal endoplasmic reticulum proteins. Determines the specificity of the luminal ER protein retention system. Also required for normal vesicular traffic through the Golgi. This receptor recognizes K-D-E-L.
Homo sapiens (taxid: 9606)
>sp|Q68ES4|ER21B_XENLA ER lumen protein retaining receptor 1-B OS=Xenopus laevis GN=kdelr1-b PE=2 SV=1
Required for the retention of luminal endoplasmic reticulum proteins. Determines the specificity of the luminal ER protein retention system. Also required for normal vesicular traffic through the Golgi. This receptor recognizes K-D-E-L.
Xenopus laevis (taxid: 8355)
>sp|Q5ZKX9|ERD22_CHICK ER lumen protein retaining receptor 2 OS=Gallus gallus GN=KDELR2 PE=2 SV=1
Required for the retention of luminal endoplasmic reticulum proteins. Determines the specificity of the luminal ER protein retention system. Also required for normal vesicular traffic through the Golgi. This receptor recognizes K-D-E-L.
Gallus gallus (taxid: 9031)
>sp|Q6PEH1|ERD22_DANRE ER lumen protein retaining receptor 2 OS=Danio rerio GN=kdelr2 PE=2 SV=1
Required for the retention of luminal endoplasmic reticulum proteins. Determines the specificity of the luminal ER protein retention system. Also required for normal vesicular traffic through the Golgi. This receptor recognizes K-D-E-L.
Danio rerio (taxid: 7955)
>sp|Q5U305|ERD22_RAT ER lumen protein retaining receptor 2 OS=Rattus norvegicus GN=Kdelr2 PE=2 SV=1
Required for the retention of luminal endoplasmic reticulum proteins. Determines the specificity of the luminal ER protein retention system. Also required for normal vesicular traffic through the Golgi. This receptor recognizes K-D-E-L.
Rattus norvegicus (taxid: 10116)
Close Homologs in the Non-Redundant Database Detected by BLAST
>gi|242014178|ref|XP_002427772.1| ER lumen protein retaining receptor, putative [Pediculus humanus corporis] gi|212512226|gb|EEB15034.1| ER lumen protein retaining receptor, putative [Pediculus humanus corporis]
>gi|29840982|gb|AAP05983.1| similar to NM_057948 ER lumen protein retaining receptor 2 in Drosophila melanogaster [Schistosoma japonicum] gi|226484602|emb|CAX74210.1| ER lumen protein retaining receptor 2 (KDEL receptor 2) [Schistosoma japonicum] gi|226484604|emb|CAX74211.1| ER lumen protein retaining receptor 2 (KDEL receptor 2) [Schistosoma japonicum]
>PF00810 ER_lumen_recept: ER lumen protein retaining receptor; InterPro: IPR000133 Proteins resident in the lumen of the endoplasmic reticulum (ER) contain a C-terminal tetrapeptide, commonly known as Lys-Asp-Glu-Leu (KDEL) in mammals and His-Asp-Glu-Leu (HDEL) in yeast (Saccharomyces cerevisiae) that acts as a signal for their retrieval from subsequent compartments of the secretory pathway
The receptor for this signal is a ~26 kDa Golgi membrane protein, initially identified as the ERD2 gene product in S. cerevisiae. The receptor molecule, known variously as the ER lumen protein retaining receptor or the 'KDEL receptor', is believed to cycle between the cis side of the Golgi apparatus and the ER. It has also been characterised in a number of other species, including plants, Plasmodium, Drosophila and mammals. In mammals, 2 highly related forms of the receptor are known. The KDEL receptor is a highly hydrophobic protein of 220 residues; its sequence exhibits 7 hydrophobic regions, all of which have been suggested to traverse the membrane []. More recently, however, it has been suggested that only 6 of these regions are transmembrane (TM), resulting in both N- and C-termini on the cytoplasmic side of the membrane.; GO: 0046923 ER retention sequence binding, 0006621 protein retention in ER lumen, 0016021 integral to membrane
>smart00679 CTNS Repeated motif present between transmembrane helices in cystinosin, yeast ERS1p, mannose-P-dolichol utilization defect 1, and other hypothetical proteins