Lactate dehydrogenase in the cyanobacteriumMicrocystisPCC7806
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VARIATIONS BY EPINEPHRINE OF HEPATIC AND SERUM AMINOTRANSFERASES AND LACTATE DEHYDROGENASE IN THE RAT
Incubation of rat hepatocytes with epinephrine inhibited alanine aminotransferase (ALT) (80%) and aspartate aminotransferase (AST) (53%) activities with no effect on lactate dehydrogenase (LDH) activity. Injection of epinephrine caused a progressive increase with time in hepatic LDH activity, being 52% at 24 h. Preinjection with propranolol eliminated the hormone effect and caused further ...
متن کاملCharacterization of rabbit lactate dehydrogenase-M and lactate dehydrogenase-H cDNAs. Control of lactate dehydrogenase expression in rabbit muscle.
Two cDNA clones were isolated, one corresponding to the mRNA coding for lactate dehydrogenase-M (LDH-M), the other to the mRNA coding for lactate dehydrogenase-H (LDH-H). The cDNA inserts consist of the entire open reading frame for LDH-M and a partial sequence, from amino acid 117 to 332, for LDH-H. Using these two clones as probes we demonstrate that: (a) the abundance of mRNA is muscle-type ...
متن کاملSynthesis and Degradation of Rat Liver Lactate Dehydrogenase M4 HYBRIDIZATION IN THE PURIFICATION OF LACTATE DEHYDROGENASE
For the measurement of lactate dehydrogenase (LDH) isoenzyme biosynthesis a new method is presented which is based on the quantitative hybridization of isoenzyme MI with isoenzyme Hq. After reversible dissociation the formation of active LDH M4 was more rapid and occurred to a greater extent than the formation of LDH Hq. The formation of hybrid isoenzymes from the two subunits resulted in an in...
متن کاملLACTATE DEHYDROGENASE Elevation ofserum lactate dehydrogenasecommences
Heart tissue injury may release cardiac enzymes into the circulation and elevate serum enzyme levels (LaDue, Wroblewski, and Karmen, 1954). Many enzymes become raised, but three enzymesaspartate aminotransferase (EC 2.6.1.1), creatine kinase (EC 2.7.3.2), and lactate dehydrogenase (EC 1.1.1.27)-have proved of particular diagnostic value. In addition, determination of lactate dehydrogenase isoen...
متن کاملLactate dehydrogenase in Phycomyces blakesleeanus.
1. An NAD-specific L(+)-lactate dehydrogenase (EC 1.1.1.27) from the mycelium of Phycomyces blakesleeanus N.R.R.L. 1555 (-) was purified approximately 700-fold. The enzyme has a molecular weight of 135,000-140,000. The purified enzyme gave a single, catalytically active, protein band after polyacrylamide-gel electrophoresis. It shows optimum activity between pH 6.7 and 7.5. 2. The Phycomyces bl...
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ژورنال
عنوان ژورنال: FEMS Microbiology Letters
سال: 1995
ISSN: 0378-1097,1574-6968
DOI: 10.1111/j.1574-6968.1995.tb07448.x