RGD Reference Report - Cloning and characterization of a 22 kDa protein from rat adipocytes: a new member of the reticulon family. - Rat Genome Database

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Cloning and characterization of a 22 kDa protein from rat adipocytes: a new member of the reticulon family.

Authors: Morris, NJ  Ross, SA  Neveu, JM  Lane, WS  Lienhard, GE 
Citation: Morris NJ, etal., Biochim Biophys Acta 1999 May 6;1450(1):68-76.
RGD ID: 633934
Pubmed: PMID:10231557   (View Abstract at PubMed)

In the course of our examination of proteins associated with the GLUT4-containing vesicles of rat adipocytes we have identified a new 22 kDa member of the family of endoplasmic reticulum (ER) proteins known as reticulons. The protein, which we refer to as vp20, was purified from a preparation of GLUT4-containing vesicles of rat adipocytes, and tryptic peptides were micro-sequenced. From this information a cDNA encoding a single open reading frame for a protein of 22 kDa was cloned. This protein is homologous to known members of the reticulon protein family. vp20 has two hydrophobic stretches of about 35 amino acids that could be membrane spanning domains and an ER retention motif at its carboxy-terminus. vp20 was most abundant in the high density microsome fraction of adipocytes, which is the fraction most enriched in ER. Only a small fraction of vp20 was present in the GLUT4 vesicle population, and that fraction appears to be due to ER vesicles that were non-specifically bound to the adsorbent. Analysis of tissue distribution of vp20 in rats revealed that it is concentrated in muscle, fat and the brain.

Gene Ontology Annotations    Click to see Annotation Detail View

Cellular Component
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
endoplasmic reticulum membrane located_inIDA 633934PMID:10231557UniProt 

Objects Annotated

Genes (Rattus norvegicus)
Rtn4  (reticulon 4)


Additional Information