Results 31 to 40 of about 1,056,484 (359)
The Urea Carboxylase and Allophanate Hydrolase Activities of Urea Amidolyase Are Functionally Independent [PDF]
, 2016 Urea amidolyase (UAL) is a multifunctional biotin-dependent enzyme that contributes to both bacterial and fungal pathogenicity by catalyzing the ATP-dependent cleavage of urea into ammonia and CO2.
Bahler +48 more
core +2 more sources
Revista Brasileira de Ciência do Solo, 2005 O nitrogênio é o nutriente mineral requerido em maior quantidade pelo milho e o que mais influencia a produtividade de grãos. Com o objetivo de avaliar a melhor época e forma de aplicação do N na cultura do milho no sistema plantio direto, em solo de ...
Edson Cabral da Silva +4 more
doaj +1 more source
Ethyl carbamate formation in sub-optimal wine storage conditions and influence of the yeast starter
OENO One, 2013 Aim: To evaluate the potential risk of ethyl carbamate (EC) formation in wine by studying its production kinetics at sub-optimal storage temperatures. Methods and results: The kinetics of EC formation was investigated in 60 white wines obtained from 6 ...
Roberto Larcher +4 more
doaj +1 more source
A urea precursor to synthesize carbon nitride with mesoporosity for enhanced activity in the photocatalytic removal of phenol [PDF]
, 2012 A urea precursor was used for the first time to prepare mesoporous carbon nitride (MCN) by a thermal polymerization process with silica nanospheres as a hard template.
Leny Yuliati, Leny Yuliati +2 more
core +1 more source
The condensation of chloral with urea and phenyl urea [PDF]
Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1931 The condensation of chloral with urea was first observed by Jacobsen, who found that monochloral urea CCI 3 . CH(OH) . NH . CO . NH 2 (I), and dichloral urea CCI 3 . CH(OH). NH . CO . NH . CH(OH). CCI 3
Frederick Daniel Chattaway +1 more
openaire +2 more sources
Pesquisa Agropecuária Tropical, 2018 In early soybean cultivars of high productive potential, the use of chemical nitrogen (N) fertilizer may be a critical factor to meet the crop N requirements for obtaining high yields.
Alan Mario Zuffo +3 more
doaj +1 more source
Splanchnic metabolism of nutrients and hormones in steers fed alfalfa under conditions of increased absorption of ammonia and L-arginine supply across the portal-drained viscera [PDF]
, 2005 Effects of increased ammonia and/or arginine absorption on net splanchnic (portal-drained viscera [PDV] plus liver) metabolism of nonnitrogenous nutrients and hormones in cattle were examined.
Assan +42 more
core +1 more source
Journal of Biological Chemistry, 1972 Abstract The ATP-dependent cleavage of urea, catalyzed by urea amidolyase, occurs in two steps: (a) urea + ATP + HCO3- (Mg++, K+)/⇌ allophanate + ADP + Pi; and (b) allophanate → 2 HCO3- + 2 NH4+. The enzyme, purified approximately 150-fold from extracts of Candida utilis, contains high levels of covalently bound biotin and is very sensitive to ...
Robert J. Roon +2 more
openaire +3 more sources
Molecules, 2015 The reversible reaction of carbon dioxide (CO2) with primary amines to form alkyl-ammonium carbamates is demonstrated in this work to reduce amine reactivity against nucleophilic substitution reactions with benzophenone and phenyl isocyanate.
Fiaz S. Mohammed +1 more
doaj +1 more source
Molecular evolution of urea amidolyase and urea carboxylase in fungi [PDF]
BMC Evolutionary Biology, 2011 Abstract Background Urea amidolyase breaks down urea into ammonia and carbon dioxide in a two-step process, while another enzyme, urease, does this in a one step-process. Urea amidolyase has been found only in some fungal species among eukaryotes. It contains two major domains: the amidase and urea carboxylase domains.
Strope, Pooja K. +3 more
openaire +4 more sources