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Two benzoyl-l-tyrosine p-nitroanilide hydrolases (BTPAases I and II) were purified from the etiolated leaves of Zea mays L. and characterized. BTPAase I was electrophoretically homogeneous and consisted of two identical subunits having a molecular weight of 53,000. The molecular weight of BTPAase II
Benzoyl-L-arginine p-nitroanilide hydrolase in the etiolated leaves of Zea mays L. has been purified 1,266-fold by a combination of gel filtration, ion exchange, and hydrophobic chromatography with a recovery of 13%. The specific activity of the purified enzyme is 5.7 units/mg protein. The enzyme is
We tested the effect of dietary fat on the lipid composition and hydrolase activity of jejunal brush border membranes in piglets. Eighteen 5-wk-old piglets were divided into three groups and for 4 wk fed either an unsaturated low fat diet (3.2% corn oil), an unsaturated high fat diet (17.2% corn
In planta expression of cell wall degrading enzymes is a promising approach for developing optimized biomass feedstocks that enable low-cost cellulosic biofuels production. Transgenic plants could serve as either an enzyme source for the hydrolysis of pretreated biomass or as the primary biomass
Maize ChitA chitinase is composed of a small, hevein-like domain attached to a carboxy-terminal chitinase domain. During fungal ear rot, the hevein-like domain is cleaved by secreted fungal proteases to produce truncated forms of ChitA. Here, we report a structural and biochemical characterization
OBJECTIVE
To isolate and identify differentially expressed proteins in testis of rat fetuses after maternal exposure to di-n-butyl phthalate (DBP).
METHODS
Pregnant rats were daily treated by gavage with 1 ml/kg corn oil or 750 mg/kg DBP from GD14 to GD18. We used the technique of proteomic analysis
Polyglycine hydrolases (PGH)s are secreted fungal endoproteases that cleave peptide bonds in the polyglycine interdomain linker of ChitA chitinase, an antifungal protein from domesticated corn (Zea mays ssp. mays). These target-specific endoproteases are unusual because they do not cut a specific
The sedimentability of eight acid hydrolases in an homogenate from root tips of Zea mays (L.) varied between 13% (α-glucosidase) and 46% (β-N-acetylglucosaminidase) of the total activity. Between 20% and 30% of total activity of the majority of acid hydrolases examined was sedimentable.High specific
Through the use of molecular and biochemical experiments and bioinformatic tools, this work demonstrates that the PA4921 gene of the Pseudomonas aeruginosa PAO1 genome is a gene responsible for cholinesterase (ChoE) activity. Similar to the acetylcholinesterase (AchE) of Zea mays, this ChoE belongs
Glycoside hydrolase family 1 consists of beta-glucosidases, beta-galactosidases, 6-phospho-beta-galactosidases, myrosinases, and other enzymes having similar primary and tertiary structures but diverse specificities. Among these enzymes, beta-glucosidases hydrolyze cellobiose to glucose, and
The purification of 6-O(4-O)-indole-3-ylacetyl-beta-D-glucose (IAGlc) hydrolase from immature kernels of maize (Zea mays) was undertaken to separate this enzyme from 1-O-IAGlc hydrolase and beta-glucosidase. Partially purified 6-O(4-O)-IAGlc hydrolase was found to be the specific enzyme catalyzing
Excised maize (Zea mays L.) endosperms incubated in buffer rapidly degrade their starch and protein reserves. These processes are not markedly stimulated by addition of gibberellic acid (GA3). However protease and α-amylase production are strongly inhibited by abscisic acid, and this inhibition can
A simple method was developed of measuring pancreatic hydrolase activities by allowing canine faecal, intestinal or pancreatic samples to diffuse in agar gels containing a substrate (Ca-paracaseinate, starch, corn oil). In faecal samples the protease determination proved most valuable. However, a
Cholesteryl ester hydrolase was assayed in adrenal homogenates from mature female rats fed a control (corn oil-containing) or essential fatty acid (EFA)-deficient diet. Cholesteryl ester of 16:0, 18:0, 18:1, 18:2(n-6), 20:4(n-6) and 22:4(n-6) were used as substrates. In control rats, the unsaturated
We present a comprehensive characterization of the nucleoside N-ribohydrolase (NRH) family in two model plants, Physcomitrella patens (PpNRH) and maize (Zea mays; ZmNRH), using in vitro and in planta approaches. We identified two NRH subclasses in the plant kingdom; one preferentially targets the