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Crystallization and preliminary X-ray diffraction data of the second and archaebacterial-type aspartyl-tRNA
1Département "Mécanismes et Macromolécules de la Synthèse Protéique et Cristallogenèse", UPR 9002, Institut de Biologie Moléculaire et Cellulaire du CNRS, 15 Rue René Descartes, F-67084 Strasbourg CEDEX, France.
Abstract:
The archaebacterial-type aspartyl-tRNA synthetase (AspRS2) from the thermophilic eubacterium Thermus thermophilus was crystallized using the hanging-drop vapour-diffusion method. Crystals grew at pH 9.5 in the presence of PEG 8000 and NaCl. A native diffraction data set has been collected at 2.5 A resolution using synchrotron radiation and cryocooling. Crystals belong to the orthorhombic space group P2(1)2(1)2(1), with unit-cell parameters a = 57.3, b = 121.9, c = 166.9 A and V(M) = 3.03 A(3) Da(-1). There is one dimer of M(r) 96 000 per asymmetric unit. A molecular-replacement analysis gave solutions for the rotation and translation functions.