Journal
ACTA CRYSTALLOGRAPHICA SECTION D-STRUCTURAL BIOLOGY
Volume 58, Issue -, Pages 1479-1481Publisher
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S0907444902011034
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Pyridoxal kinase (ATP:pyridoxal 5'-phosphotransferase; EC 2.7.1.35) is a key enzyme in the transformation of vitamin B-6 to pyridoxal-5'-phosphate. Pyridoxal-5'-phosphate is the crucial cofactor required by numerous enzymes involved in the metabolism of amino acids and the synthesis of many neurotransmitters. Pyridoxal kinase from sheep brain was crystallized in an orthorhombic form using the hanging-drop vapour-diffusion method with sodium citrate as the precipitant. The crystals belong to space group P2(1)2(1)2(1), with unit-cell parameters a = 59.8, b = 94.4, c = 128.2 Angstrom, and diffract to a resolution of 2.1 Angstrom. Crystals were transferred into a soaking liquid without citrate and two heavy-atom derivatives were prepared.
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