apparently restricted to the cotyledon as several analyses of leaf and root homogenates showed no activity. In experiments not shown here, it was found that the enzyme is present in extracts of acetone powders of eithers peanut or castor-bean cotyledons. In order to test the specificity of the malate synthetase reaction, various compounds were compared with acetyl phosphate in the assay system ...

The acetylation of aromatic amines by enzymes extracted from pigeon liver has been studied intensively, and the over-all process has been resolved into two clearly distinct steps. The pigeon liver extract that can acetylate sulfanilamide by utilizing adenosine triphosphate, coenzyme ,2, and acetate was treated with acetone to yield first, a fraction that produced acetyl-CoA and second, a fracti...

Hart, Beth A. (Cornell University, Ithaca, N.Y.), and Stanley A. Zahler. Lytic enzyme produced by Myxococcus xanthus. J. Bacteriol. 92:1632-1637. 1966.-Strain FBa of Myxococcus xanthus releases into its culture medium an enzyme capable of lysing Micrococcus lysodeikticus cells and of releasing N-acetyl amino sugars from their cell walls. The lysin is stable at pH values near neutrality and at t...

Cork smoker wash solids (black wax) that is obtained in the process of making corkboard by treating ground cork with superheated steam useless waste, generating environmental problems. On other hand, black wax a rich source friedelin (1) and 3-hydroxyfriedel-3-en-2-one (3), pentacyclic triterpenoids belonging to friedelane family. In present work, simple, fast, efficient procedure for extractio...

Covalent grafting of the nanoporous molecular sieve MCM-41 with 3- aminopropyl trimethoxysilane and acetyl acetone (acac) successively gave modified MCM-41 (acacAmpMCM-41). Reaction of the resulted material with glycine afforded the corresponding supported glycine Schiff base ligand and subsequent reaction with [bis(acetylacetonato)dioxomolybdenum(VI)] was lead to molybdenum complex suppor...

Background: The halophyte Lotus creticus L. (creta trefoil, Fabaceae) belongs to a family and genus containing several medicinal species, is considered promising crop for saline Mediterranean areas. However, the best of our knowledge, information regarding biological properties this species that could increase its biotechnological value particularly scarce. Objectives: We aimed evaluate potenti...

Microsomes of the yeast, Hansenula ciferri NRRL Y-1031, F-60-10, contain an enzyme (long chain base-acetyl coenzyme A acetyltransferase, EC 2.3 . 1) which catalyzes the transfer of the acetyl moiety of acetyl coenzyme A to both the amino and hydroxyl groups of the sphingosine bases; a separation of these two transfer reactions could not be achieved. The enzyme also catalyzed an acetyl transfer ...

Microsomes of the yeast, Hansenula ciferri NRRL Y-1031, F-60-10, contain an enzyme (long chain base-acetyl coenzyme A acetyltransferase, EC 2.3 . 1) which catalyzes the transfer of the acetyl moiety of acetyl coenzyme A to both the amino and hydroxyl groups of the sphingosine bases; a separation of these two transfer reactions could not be achieved. The enzyme also catalyzed an acetyl transfer ...

the chemistry of 2-oxo-1,2,3,4-tetrahydropyrimidines began to develop toward the end of 1893 year, when the first representatives of this class compounds were reported by p. biginelli. despite prior reports of several really effective catalytic and non-catalytic approaches towards biginelli-type products, an overwhelming number of new catalysts for the biginelli reaction have been recently publ...

Microsomes of the yeast, Hansenula ciferri NRRL Y-1031, F-60-10, contain an enzyme (long chain base-acetyl coenzyme A acetyltransferase, EC 2.3 . 1) which catalyzes the transfer of the acetyl moiety of acetyl coenzyme A to both the amino and hydroxyl groups of the sphingosine bases; a separation of these two transfer reactions could not be achieved. The enzyme also catalyzed an acetyl transfer ...