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. 1994 Jan;32(1):79-86.

Selenomethionine as substrate for glutamine transaminase

C Blarzino  1 , R Coccia, B Pensa, C Cini, C De Marco
Affiliations
  • PMID: 8012292

Selenomethionine as substrate for glutamine transaminase

C Blarzino et al. Biochem Mol Biol Int. 1994 Jan.

Abstract

Selenomethionine is as a good substrate as methionine for bovine liver glutamine transaminase (E.C. 2.6.1.15). Almost identical Km values for methionine, selenomethionine, 4-methylthio-2-oxobutanoic acid and 4-methylseleno-2-oxobutanoic acid have been obtained. Like for other enzymes, also for glutamine transaminase the substitution of the sulfur atom in a substrate molecule by a selenium one does not appreciably affect the enzyme affinity. Glutamine transaminase may thus be involved in selenomethionine catabolism.

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