منابع مشابه
Rapid Enzymatic Degradation
The effect of plasma on degradation of human growth hormonereleasing hormone (GRH) was examined in vitro and in vivo using high performance liquid chromatography (HPLC), radioimmunoassay (RIA), and bioassay. When GRH(1-44)-NH2 was incubated with human plasma, the t1/2 of total GRH immunoreactivity was 63 min (RIA). However, HPLC revealed a more rapid disappearance (t1/2, 17 min) ofGRH(144)-NH2 ...
متن کاملEnzymatic "combustion": the microbial degradation of lignin.
INTRODUCTION ....................................................................................................................................... 465 LIGNIN AS A SUBSTRATE ............................................................................................................................... 466 MICROBIOLOGY OF LIGNIN BIODEGRADATI ON ......................................................
متن کاملThe enzymatic degradation of urocanic acid.
Urocanic acid, produced by the nonoxidative deamination of L-histidine, has been demonstrated as the first intermediate in the degradation of this amino acid in liver (l-6) and in microorganisms (7-9). The subsequent enzymatic degradation of urocanic acid yields ol-r-formamidinoglutaric acid (10-13). The present paper describes the enzymatic formation of an unstable intermediate in this reactio...
متن کاملThe Degradation of Histidine by Aerobacter Aerogenes* by Boris Magasanik
In the course of the studies presented in the preceding paper it was observed that Aerobacter aerogenes could grow on histidine as the sole source of carbon and nitrogen (1). The nature of the microbial enzymes responsible for the complete degradation of histidine was not known and appeared therefore to be an appropriate subject for investigation. After initiation of these studies, the results ...
متن کاملEnzymatic aminoacylation of an eight-base-pair microhelix with histidine.
The major determinant for the identity of alanine tRNAs is a single base pair in the acceptor helix that is proximal to the site of amino acid attachment. A 7-base-pair microhelix that recreates the acceptor helix can be charged with alanine. No other examples of charging of small helices with specific amino acids have been reported, to our knowledge. We show here that a 13-base-pair and an 8-b...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1953
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(19)77270-6