Zobrazeno 1 - 10
of 29
pro vyhledávání: '"M H O'Leary"'
Publikováno v:
Biochemistry. 31(28)
13C and 15N isotope effects have been measured for the aspartate transcarbamylase (ATCase) reaction in an effort to elucidate the chemical mechanism of this highly regulated enzyme. The observed 15(V/K(asp))H2O value for the ATCase holoenzyme at satu
Autor:
R L Baughn, M H O'Leary
Publikováno v:
Journal of Biological Chemistry. 252:7168-7173
In addition to the usual decarboxylation, pig kidney 3,4-dihydroxyphenylalanine (dopa) decarboxylase catalyzes a decarboxylation-dependent transamination which converts dopa into 3,4-dihydroxyphenylacetaldehyde and sinultaneously converts enzyme-boun
Autor:
M H O'Leary, J R Payne
Publikováno v:
Journal of Biological Chemistry. 251:2248-2254
Pyridoxal 5'-phosphate labeled to the extent of 90% with 13C in the 4' (aldehyde) and 5' (methylene) positions has been synthesized. 13C NMR spectra of this material and of natural abundance pyridoxal 5'-phosphate are reported, as well as 13C NMR spe
Autor:
M H O'Leary, H F Gilbert rd
Publikováno v:
Biochemistry. 14:5194-5199
Primary amines react with 2,4-pentanedione at pH 6-9 to form enamines, N-alkyl-4-amino-3-penten-2-ones. The latter compounds readily regenerate the primary amine at low pH or on treatment with hydroxylamine. Guanidine and substituted guanidines react
Publikováno v:
Journal of Biological Chemistry. 257:3564-3569
Aspartate beta-decarboxylase catalyzes abortive decarboxylation/transamination of [2-3H]aspartate with at least 17% internal transfer of tritium to the pro-S position at C-4' of the resulting pyridoxamine phosphate. In the normal beta-decarboxylation
Autor:
E Diaz, M H O'Leary
Publikováno v:
Journal of Biological Chemistry. 257:14603-14605
Phosphoenol-3-bromopyruvate is an excellent competitive inhibitor (versus phosphoenolpyruvate) of maize phosphoenolpyruvate carboxylase (Ki = 30 microM), provided that preincubation of enzyme with inhibitor is avoided. If the enzyme is preincubated w
Publikováno v:
Journal of Biological Chemistry. 256:1105-1107
We have measured the increase in 18O content of water produced from single turnover oxidations of anerobically reduced cytochrome c oxidase with 18O2 in order to test the hypothesis that a reduced atom of oxygen, originating from dioxygen, remains bo
Publikováno v:
The Journal of biological chemistry. 257(7)
Aspartate beta-decarboxylase catalyzes abortive decarboxylation/transamination of [2-3H]aspartate with at least 17% internal transfer of tritium to the pro-S position at C-4' of the resulting pyridoxamine phosphate. In the normal beta-decarboxylation
Autor:
J. F. MARLIER, M. H. O'LEARY
Publikováno v:
Chemischer Informationsdienst. 15
Autor:
M H, O'Leary, R L, Baughn
Publikováno v:
The Journal of biological chemistry. 252(20)
In addition to the usual decarboxylation, pig kidney 3,4-dihydroxyphenylalanine (dopa) decarboxylase catalyzes a decarboxylation-dependent transamination which converts dopa into 3,4-dihydroxyphenylacetaldehyde and sinultaneously converts enzyme-boun