1. l-Serine was shown to be a highly specific inhibitor of 3-phosphoglycerate dehydrogenase. 2. 3-Phosphoglycerate dehydrogenase is cold-labile with respect to its catalytic activity and to sensitivity to serine. 3. l-Serine protects the catalytic site as well as the inhibitor site. 4. Glycerol protects the catalytic site as well as the inhibitor site. 5. Serine acts as a ;classical' non-compet...

component of the NASA Aviation Safety Program under contract NNL10AA13C. The views and conclusions in this report are those of the authors alone. Approval by NASA as a NASA Technical Report is still in process. 2 Electronic versions of this technical report can be obtained from

component of the NASA Aviation Safety Program under contract NNL10AA13C. The views and conclusions in this report are those of the authors alone. Approval by NASA as a NASA Technical Report is still in process. 2 Electronic versions of this technical report can be obtained from

a series of 3-alkoxy-4-(4-(hexyloxy/heptyloxy) phenyl)-4h-1,2,4-triazole was synthesized. the anticonvulsant effect and neurotoxicity of the compounds were calculated with maximal electroshock (mes) test and rotarod tests with intraperitoneally injected mice. among the synthesized compounds, compound 3-heptyloxy-4-(4-(hexyloxy) phenyl)-4h-1,2,4-triazole (5f) was the most active one and also had...

background: postpartum time is a transient time for the mother and her family, in which mothers need psycho-physical andsocial adaptation. this study aimed to defi ne the association between postpartum physical activity 3-12 months after deliveryand postpartum well-being. materials and methods: this is a historical cohort study in which based on the primary information obtained from the physica...

a series of 2-amino-4-aryl-3-cyano-7-(dimethylamino)-4 h -chromenes was synthesized by condensation of 3-(dimethylamino)phenol, an aromatic aldehyde and malonitrile in ethanol containing piperidine. the assignments of the structure of all synthesized compounds were based on spectral data (ir, mass and 1 h nmr). the cytotoxic activities of the synthesized compounds against six human tumor cell l...

the present study aimed to use a method for the synthesis of some 3, 4-dihydropyrimidin-2-(1h) - ones/thiones. the study tried to answer the question whether this reaction can be performed without solvent and with new catalyst or not. to find answer to the question, we described a novel protocol for the efficient synthesis of 3, 4-dihydropyrimidin-2-(1h)-one derivatives using aromatic aldehyde,...

site-directed mutagenesis (sdm) as a powerful technique was used to change two important and conserved amino acids in 5-enolpyruvylshikimate 3- phosphate synthase (epsps) gene of e. coli. the mutations changed glycine 96 to alanine and alanine 183 to threonine. these two amino acids are very important for intraction of the wide spectrum herbicide, glyphosate, to epsp synthase enzymes. by design...