منابع مشابه
l-amino acid oxidases of Proteus rettgeri.
Proteus rettgeri has been found to contain two separable 1-amino acid oxidases. Both enzymes are particulate in nature, neither being ribosomal bound. One of these enzymes appears to have broad specificity, being active toward monoaminomonocarboxylic, imino, aromatic, sulfur-containing, and beta-hydroxyamino acids. The other enzyme has more limited specificity, catalyzing the oxidative deaminat...
متن کاملThe L-amino acid oxidase of Neurospora.
In 1944 one of us described a n-amino acid oxidase in extracts of Neurospora crassa (1). Except for slight activity against L-glutamate, no oxidation of L-amino acids was observed. Recently a means for inducing the formation of a soluble L-amino acid oxidase by the mold was reported by Bender, Krebs, and Hor0wit.z (2). This is accomplished by reducing the biotin content of the basal medium (3) ...
متن کاملFractionation of the pyruvate oxidase of Proteus vulgaris.
Cell-free extracts of Proteus vulgar& oxidize pyruvate to acetate and COS. By acid precipitation of such extracts, Stumpf (1) prepared a protein fraction that required cocarboxylase and certain divalent metal ions for activity; no requirement for phosphate or other acetyl acceptor system could be demonstrated. Thus the system resembled that of Escherichia coli described by Still (2), and differ...
متن کاملAntibacterial Properties of the Mammalian L-Amino Acid Oxidase IL4I1
L-amino acid oxidases (LAAO) are flavoproteins that catalyze the oxidative deamination of L-amino acids to a keto-acid along with the production of H₂O₂ and ammonia. Interleukin 4 induced gene 1 (IL4I1) is a secreted LAAO expressed by macrophages and dendritic cells stimulated by microbial derived products or interferons, which is endowed with immunoregulatory properties. It is the first LAAO d...
متن کاملInactivation of snake venom L-amino acid oxidase by freezing.
The L-amino acid oxidase of Crotalus adamanteus is inactivated by storage in the frozen state at temperatures between -5” and -60°, with maximal inactivation being observed at approximately -20”. The rate of inactivation is dependent on the pH of storage and on the ionic composition of the medium. The inactivation is accompanied by changes in the visible absorption spectrum and by a decrease in...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1944
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)71982-0