PMID: 6111351Mar 13, 1981Paper

Rat brain guanylate cyclase. Purification, amphiphilic properties and immunological characterization

Biochimica Et Biophysica Acta
J ZwillerP Mandel

Abstract

Soluble guanylate cyclase (GTP pyrophosphate-lyase (cyclizing), EC 4.6.1.2) has been purified to apparent homogeneity from rat brain by chromatography on Blue-Sepharose CL-6B, precipitation with (NH4)2SO4, preparative isoelectric focusing and gel-filtration on Ultrogel AcA-34. On sodium dodecyl sulphate (SDS)-polyacrylamide gel electrophoresis the purified enzyme showed a single band with an apparent molecular weight 59 000, when stored in buffer without glycerol and 2-mercaptoethanol. Purified enzyme has been found to be very unstable; inactivation can however be partially reversed by an endogenous heat-stable activator fraction. A monospecific antiserum obtained by immunization of rabbits was found to precipitate guanylate cyclase. This antibody also reacted with membrane-bound enzyme, indicating a close similarity to the soluble enzyme. Metal divalent cations were in general found to be strong inhibitors of the enzyme activity, though Ca2+ had no effect. ATP, CTP or UTP were shown to be competitive inhibitors of purified guanylate cyclase. Sodium nitroprusside increased cyclic GMP formation by the purified enzyme. Lysophosphatidylcholine and oleic acid, at low concentration, activated guanylate cyclase. Other unsaturated fat...Continue Reading

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Citations

Sep 6, 2012·Science Signaling·Roland Seifert, Kerstin Y Beste
May 2, 2009·Journal of Applied Physiology·William J PearceThomas M Lincoln
Dec 1, 1982·Journal of Neuroimmunology·P BassetJ B Thiébaut
Apr 5, 1982·FEBS Letters·M Nakane, T Deguchi
Sep 30, 1982·Biochemical and Biophysical Research Communications·R GerzerD L Garbers
Feb 28, 1992·Biochemical and Biophysical Research Communications·S D IdrissG R Boss
Aug 31, 1981·Biochemical and Biophysical Research Communications·J ZwillerP Basset
Nov 30, 2011·Biochemistry·Kerstin Y BesteRoland Seifert
Mar 1, 1982·Journal of Neurochemistry·J ZwillerP Mandel
Nov 27, 1985·Biochemical and Biophysical Research Communications·P AnglardJ C Louis

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