Ligand affinity adsorbents are used in protein chromatography, affinity chromatography and dye resins. Ligand affinity adsorbents have been used to describe a simple protocol for the purification of Taq Polymerase from E. coli lysates as well as for the purification of other DNA polymerases.
The roles of His181, His184 and Tyr186 in PETN reductase have been examined by mutagenesis, spectroscopic and stopped-flow kinetics, and by determination of crystallographic structures for the Y186F PETN reductase and reduced wild-type enzyme-progesterone complex. Residues His181 and His184 are
Crystal structure of pentaerythritol tetranitrate reductase: "flipped" binding geometries for steroid substrates in different redox states of the enzyme.
Barna, T.M., et al.
Journal of Molecular Biology, 310(2), 443-447 (2001)
Biological activity and biosynthesis of pentacyclic oxylipins: The linoleic acid pathway.
The Journal of biological chemistry, 279(29), 30563-30572 (2004-05-07)
The structure of pentaerythritol tetranitrate (PETN) reductase in complex with the nitroaromatic substrate picric acid determined previously at 1.55 A resolution indicated additional electron density between the indole ring of residue Trp-102 and the nitro group at C-6 of picrate.
The Journal of biological chemistry, 277(24), 21906-21912 (2002-03-30)
The reaction of pentaerythritol tetranitrate reductase with reducing and oxidizing substrates has been studied by stopped-flow spectrophotometry, redox potentiometry, and X-ray crystallography. We show in the reductive half-reaction of pentaerythritol tetranitrate (PETN) reductase that NADPH binds to form an enzyme-NADPH
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