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Crystallization and X‐ray analysis of human cytoplasmic phenylalanyl‐tRNA synthetase

Crystallization and X‐ray analysis of human cytoplasmic phenylalanyl‐tRNA synthetase Human cytosolic phenylalanyl‐tRNA synthetase (hcPheRS) is responsible for the covalent attachment of phenylalanine to its cognate tRNAPhe. Significant differences between the amino‐acid sequences of eukaryotic and prokaryotic PheRSs indicate that the domain composition of hcPheRS differs from that of the Thermus thermophilus analogue. As a consequence of the absence of the anticodon‐recognizing B8 domain, the binding mode of tRNAPhe to hcPheRS is expected to differ from that in prokaryotes. Recombinant hcPheRS protein was purified to homogeneity and crystallized. The crystals used for structure determination diffracted to 3.3 Å resolution and belonged to space group C2, with unit‐cell parameters a = 362.9, b = 213.6, c = 212.7 Å, β = 125.2°. The structure of hcPheRS was determined by the molecular‐replacement method in combination with phase information from multiwavelength anomalous dispersion. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Crystallographica Section F Wiley

Crystallization and X‐ray analysis of human cytoplasmic phenylalanyl‐tRNA synthetase

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References (14)

Publisher
Wiley
Copyright
International Union of Crystallography, 2009
ISSN
1744-3091
eISSN
1744-3091
DOI
10.1107/S1744309108042425
pmid
19193993
Publisher site
See Article on Publisher Site

Abstract

Human cytosolic phenylalanyl‐tRNA synthetase (hcPheRS) is responsible for the covalent attachment of phenylalanine to its cognate tRNAPhe. Significant differences between the amino‐acid sequences of eukaryotic and prokaryotic PheRSs indicate that the domain composition of hcPheRS differs from that of the Thermus thermophilus analogue. As a consequence of the absence of the anticodon‐recognizing B8 domain, the binding mode of tRNAPhe to hcPheRS is expected to differ from that in prokaryotes. Recombinant hcPheRS protein was purified to homogeneity and crystallized. The crystals used for structure determination diffracted to 3.3 Å resolution and belonged to space group C2, with unit‐cell parameters a = 362.9, b = 213.6, c = 212.7 Å, β = 125.2°. The structure of hcPheRS was determined by the molecular‐replacement method in combination with phase information from multiwavelength anomalous dispersion.

Journal

Acta Crystallographica Section FWiley

Published: Feb 1, 2009

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