| Literature DB >> 17142901 |
Dashuang Shi1, Ljubica Caldovic, Zhongmin Jin, Xiaolin Yu, Qiuhao Qu, Lauren Roth, Hiroki Morizono, Yetrib Hathout, Norma M Allewell, Mendel Tuchman.
Abstract
A novel N-acetylglutamate synthase/kinase bifunctional enzyme of arginine biosynthesis that was homologous to vertebrate N-acetylglutamate synthases was identified in Xanthomonas campestris. The protein was overexpressed, purified and crystallized. The crystals belong to the hexagonal space group P6(2)22, with unit-cell parameters a = b = 134.60, c = 192.11 A, and diffract to about 3.0 A resolution. Selenomethionine-substituted recombinant protein was produced and selenomethionine substitution was verified by mass spectroscopy. Multiple anomalous dispersion (MAD) data were collected at three wavelengths at SER-CAT, Advanced Photon Source, Argonne National Laboratory. Structure determination is under way using the MAD phasing method.Entities:
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Year: 2006 PMID: 17142901 PMCID: PMC2225375 DOI: 10.1107/S1744309106044101
Source DB: PubMed Journal: Acta Crystallogr Sect F Struct Biol Cryst Commun ISSN: 1744-3091