RGD Reference Report - Isolation of renin granules from rat kidney cortex and evidence for an inactive form of renin (prorenin) in granules and plasma. - Rat Genome Database

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Isolation of renin granules from rat kidney cortex and evidence for an inactive form of renin (prorenin) in granules and plasma.

Authors: Morris, BJ  Johnston, CI 
Citation: Morris BJ and Johnston CI, Endocrinology. 1976 Jun;98(6):1466-74.
RGD ID: 2311698
Pubmed: PMID:1278112   (View Abstract at PubMed)
DOI: DOI:10.1210/endo-98-6-1466   (Journal Full-text)

Renin was demonstrated in particles having a sedimentation velocity similar to that of mitochondria during differential centrifugation separated renin granules from the bulk of mitochondria and lyosomes, as well as from microsomes and cytoplasm. The density of renin granules was 1.202, which differed from the mean equilibrium densities of mitochondria (1.175) and lysosomes (1.170 and 1.230) in the heavy granule fraction. In studies involving gel filtration and polyacrylamide gel electrophoreis, renin granules appeared to contain an inactive form of renin that could be activated by acid treatment, had a higher apparent molecular weight than renin, and may be a more basic molecule. Inactive renin was also studied in plasma by electrophoresis and may originate from renin granules after exocytosis by the juxtaglomerular cells. Inactive renin may be a biosynthetic precursor (prorenin) and may be activated within the cell by a specific protease consequent upon the fusion of renin granules with lysosomes, thus providing a mechanism for the rapid regulation of renin activity prior to secretion.

Gene Ontology Annotations    Click to see Annotation Detail View

Cellular Component
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
extracellular space  IDA 2311698 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Ren  (renin)


Additional Information