Pyruvate kinase is a key enzyme in glycolytic pathway that catalyzes the transphosphorylation between phosphoenolpyruvate and ADP to yield ATP and Pyruvate. Geobacillus stearothermophillus has a stable pyruvate kinase with determined crystal structure that composed of four separate domains. Given that limited proteolysis experiments can be successfully used to probe conformational features of p...

pyruvate kinase is a key enzyme in glycolytic pathway that catalyzes the transphosphorylation between phosphoenolpyruvate and adp to yield atp and pyruvate. geobacillus stearothermophillus has a stable pyruvate kinase with determined crystal structure that composed of four separate domains. given that limited proteolysis experiments can be successfully used to probe conformational features of p...

background: one of the affecting factors in disturbance process of spermatogenesis is chemotherapeutic-induced oxidative stress resulted from cyclophosphamide (cp) treatment which leads to diminished sperm quality via interference in spermatogenesis process. objective: this study was conducted to investigate the effects of ethyl pyruvate (ep) in reducing the cp-induced side effects on reproduct...

background: methotrexate (mtx) is an anti-metabolite drug widely used in treatment of neoplastic disorders, rheumatoid arthritis and psoriasis. the ester derivative, ethyl pyruvate (ep) is stable in solution and should function as an antioxidant and energy precursor. this study was conducted to evaluate the protective role of ep on sperm parameters, testosterone level and malondialdehyde (mda) ...

Background: Methotrexate, an immunosuppressive drug, is a folic acid antagonist. This inhibits synthesis of thymidylate, serine, and methionine, which disrupts synthesis of DNA, RNA, and protein and leads to cell death. Ethyl pyruvate, a commercial food additive, is a lipophilic ester derivative of pyruvate .In previous reports, that has been shown to ameliorate organ dysfunction in a variety o...

Sucrose is an abundant, cheap, and renewable carbohydrate which makes it attractive feedstock for the biotechnological production of chemicals. Escherichia coli W, one few safe E. strains able to metabolize sucrose, was examined pyruvate. The repressor csc regulon deleted in W expressing a variant E1 component pyruvate dehydrogenase complex, these were screened shake flask culture formation fro...

background: the frequency of pyruvate kinase (pk) deficiency, an autosomal recessive defect, is approximately 3 per 10,000 individuals in shiraz and surrounding areas, and is increased due to high consanguinity marriage frequency. the purpose of this study is to obtain data on the frequency and spectrum of gene mutation of pk in newborns, from shiraz and surrounding areas. materials and methods...

Hydrogen isotope ratios of plant lipids are used for paleoclimate reconstruction, but influenced by both source water and biosynthetic processes. Measuring 2H : 1H multiple compounds produced different pathways could allow these effects to be separated, hydrogen fractionations during isoprenoid biosynthesis remain poorly constrained. To investigate how fractionation is molecular exchange betwee...