Chelakara Sivarama Vaidyanathan, Indian biochemist (Palghat, Kerala State 14 November 1931 – Bangalore 01 September 1999)
Discovered new reaction pathways involving metabolism of phenolic and chloroaromatic compounds in plants, fungi and bacteria
First to study isolated enzyme systems involved in the aromatic ring fission in higher plants
First report of the metabolism of the fungicide Dexon by a soil bacterium
With N.G.K. Karanth, S.G. Bhat & V.N. Vasantharajan. Conversion of Dexon (p-Dimethylaminobenzenediazo Sodium Sulfonate) to N,N-dimethyl-p-Phenylenediamine by Pseudomonas fragi Bk9. Appl. Microb. (1974)
METHODS
With N.U. Khan & A.V. Kamath. Study of interfering substances in a simple, new spectrophotometric assay for phenylalanine ammonia-lyase. Biochem. Intern. 14(3):451-5, 1987
With S.P. Kunapuli & N.U. Khan. A simple and direct method for synthesis of S-mercuric N-dansyl cysteine. Ind. J. Biochem. (1984)
With M. Remika Prasad & M. Sugumaran. A new colorimetric method for the estimation of resorcinol. Anal. Biochem. (1977)
With P.M. Nair. A colorimetric method for determination of pyrocatechol and related substances. Anal. Biochem. 7(3):315-21, 1964
With K.V. Giri & A.N. Radhakrishnan. A simple paper chromatographic method for the study of transamination reactions. Nature 170:1025-6, 1952
BIOCHEMISTRY
With R. Santha, H.S. Savithri, N. Appaji Rao. 2,3 dihydroxibenzoic acid decarboxylase from Aspergillus niger: a novel decarboxylase. Europ. J. Biochem. 230(1):1104-10, 1995
With A.V. Kamath. New pathway for the biodegradation of indole in Aspergillus niger (1990)
With N. Narendra, M.A. Viswamitra, R. Venkateswara & K. Sankara Rao. Structure of cryptosin monohydrate: a new cardioactive glycoside. Acta Crystal. Sec C 43(8):1562-4, 1987
With V. Subramanian. Anthranilate hydroxylase from Aspergillus niger: new type of NADPH-linked nonheme iron monooxygenase. J. Bacter. (1984)
With S.P. Kunapuli. Purification and characterization of a new indole oxygenase from the leaves of Tecoma stans L. plant Physiol. 71(1):19-23, 1983
With K.V. Giri, A.N. Radhakrishnan & K.S. Gopalkrishnan. Proline and hydroxyproline in leaves. Nature 170:579-80, 1980
With H.K. Sharma. A new mode of ring cleavage of 2,3 dihydroxybenzoic acid in Tecoma stans L. Europ. J. Biochem. (1975)
With S.G. Bmat & N. Ramanarayanan. Mandelic acid-4-hydroxylase, a new inducible enzyme from Pseudomonas convexa. Biochem. Biophys. Res. Comm. 52(3):834-42, 1973
With N.S. Sreellela, P.V. Subba Rao & R. Premkumar. A new anthranilic acid hydroxylase from Aspergillus niger. Purifications and properties. J. Biol. Chem. (1969)
With N.C. Pillai & K.V. Giri. A blood anticoagulant factor from the latex of Carica papaya. Part I. Purification and general properties. Proceed. Ind. Acad. Sciences Sec. B 42(6):316-24, 1955