Relationship between molecular weight conversion and renin activity in dog renal renin. 1979

S Funakawa, and F Ikemoto, and M Kawamura, and K Yamamoto

A normal size form of renin, which seems to be a storage form in renin granules, changed neither in molecular weight nor activity by acidification to pH 3.0. High molecular weight (HMW) renin fractionated by gel chromatography from crude renal extract prepared with thiol group blockers was converted into normal size renin by acdification, accompanied with an increase in renin activity by about 50%. The molecular weight conversion by acidification appeared due to destruction or loss of binding ability of the renin binding substance which was present in the cytosol of renal cortical tissue. Renin and renin binding substance could combine into HMW renin at neutral pH in the presence of thiol group blockers and renin activity decreased.

UI MeSH Term Description Entries
D007672 Kidney Cortex The outer zone of the KIDNEY, beneath the capsule, consisting of KIDNEY GLOMERULUS; KIDNEY TUBULES, DISTAL; and KIDNEY TUBULES, PROXIMAL. Cortex, Kidney
D008970 Molecular Weight The sum of the weight of all the atoms in a molecule. Molecular Weights,Weight, Molecular,Weights, Molecular
D012083 Renin A highly specific (Leu-Leu) endopeptidase that generates ANGIOTENSIN I from its precursor ANGIOTENSINOGEN, leading to a cascade of reactions which elevate BLOOD PRESSURE and increase sodium retention by the kidney in the RENIN-ANGIOTENSIN SYSTEM. The enzyme was formerly listed as EC 3.4.99.19. Angiotensin-Forming Enzyme,Angiotensinogenase,Big Renin,Cryorenin,Inactive Renin,Pre-Prorenin,Preprorenin,Prorenin,Angiotensin Forming Enzyme,Pre Prorenin,Renin, Big,Renin, Inactive
D004285 Dogs The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065) Canis familiaris,Dog
D000143 Acids Chemical compounds which yield hydrogen ions or protons when dissolved in water, whose hydrogen can be replaced by metals or basic radicals, or which react with bases to form salts and water (neutralization). An extension of the term includes substances dissolved in media other than water. (Grant & Hackh's Chemical Dictionary, 5th ed) Acid
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

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