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Systematic study of chemical reactivity of non-Watson–Crick base pairs depending on their type and microenvironment was performed on a model system that represents two sets of synthetic DNA duplexes with all types of mismatched and unmatched bases flanked by T·A or G·C pairs. Using comparative cleavage pattern analysis, we identified the main and additional target bases and performed quantitative...
Dihydrodipicolinate synthase (DHDPS, E.C. 4.2.1.52), a validated antibiotic target, catalyses the first committed step in the lysine biosynthetic pathway: the condensation reaction between (S)-aspartate β-semialdehyde [(S)-ASA] and pyruvate via the formation of a Schiff base intermediate between pyruvate and the absolutely conserved active-site lysine. Escherichia coli DHDPS mutants K161A and K161R...
Wheat germ lipase is a cereal lipase which is a monomeric protein. In the present study we sought to structurally characterize this protein along with equilibrium unfolding in solution. Conformational changes occurring in the protein with varying pH, were monitored by circular dichroism (CD) spectroscopy, fluorescence emission spectroscopy, binding of hydrophobic dye, 1-anilino 8-naphthalenesulfonic...
Serious clinical problems such as hemorrhage, edema and tissue necrosis are observed following viperid envenoming. A proteinase (VLH2) was isolated from Vipera lebetina by combination of two chromatographic steps of gel filtration on Sephadex G-75 followed by DEAE Sephadex A-50. This acidic proteinase, with a molecular mass of about 55 kDa and isoelectric point of 5.4, displayed a fibrinogenolytic...
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