Crystallization and preliminary X-ray studies on pseudoazurin from Achromobacter cycloclastes IAM1013.
Inoue, T., Nishio, N., Kai, Y., Harada, S., Ohshiro, Y., Suzuki, S., Kohzuma, T., Shidara, S., Iwasaki, H.(1993) J Biochem 114: 761-762
- PubMed: 8138527 
- DOI: https://doi.org/10.1093/oxfordjournals.jbchem.a124251
- Primary Citation of Related Structures:  
1ZIA, 1ZIB - PubMed Abstract: 
New crystals of a blue copper protein, pseudoazurin from denitrifier Achromobacter cycloclastes IAM1013, have been obtained by means of vapor diffusion with ammonium sulfate as a precipitant at pH 6.0 and 4 degrees C. The crystals belong to the orthorhombic system, space group P2(1)2(1)2(1), with unit cell dimensions of a = 56.69(2), b = 61.53(2), and c = 30.20(1) A. The asymmetric unit includes one molecule of pseudoazurin with a Vm value of 2.04 A3/Da. The crystals are so stable against X-ray irradiation that a complete data set up to 1.54 A has been collected using a single native crystal. Solution of the structure was performed by means of the Patterson search techniques, and the current crystallographic R-factor is 17.5% at 3.0 A resolution. Refinement at higher resolution is in progress.
Organizational Affiliation: 
Department of Applied Chemistry, Faculty of Engineering, Osaka University.