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Crystallization and preliminary X-ray crystallographic studies of mavicyanin from Cucurbita pepo medullosa. 2003

Yong Xie, and Tsuyoshi Inoue, and Youichi Miyamoto, and Hiroyoshi Matsumura, and Kunishige Kataoka, and Kazuya Yamaguchi, and Shinnichiro Suzuki, and Yasushi Kai
Department of Materials Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan.

Mavicyanin isolated from Cucurbita pepo medullosa is a glycosylated protein containing a single polypeptide chain of 109 amino-acid residues and is a member of the phytocyanin subclass of cupredoxins. Non-glycosylated recombinant mavicyanin, which was expressed in Escherichia coli, was crystallized by the hanging-drop vapour-diffusion method with ammonium sulfate as the precipitant at pH 5.5. The crystals belonged to the hexagonal space group P6(1) (or P6(5)), with unit-cell parameters a = 64.0, c = 245.0 A, four molecules per asymmetric unit and a solvent content of 59%. X-ray diffraction data were collected to 1.6 A resolution. To solve the structure of mavicyanin, the MAD method as well as a Patterson search method using the structure of stellacyanin as a starting model are presently being utilized.

UI MeSH Term Description Entries
D008667 Metalloproteins Proteins that have one or more tightly bound metal ions forming part of their structure. (Dorland, 28th ed) Metalloprotein
D010940 Plant Proteins Proteins found in plants (flowers, herbs, shrubs, trees, etc.). The concept does not include proteins found in vegetables for which PLANT PROTEINS, DIETARY is available. Plant Protein,Protein, Plant,Proteins, Plant
D004058 Diffusion The tendency of a gas or solute to pass from a point of higher pressure or concentration to a point of lower pressure or concentration and to distribute itself throughout the available space. Diffusion, especially FACILITATED DIFFUSION, is a major mechanism of BIOLOGICAL TRANSPORT. Diffusions
D004926 Escherichia coli A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc. Alkalescens-Dispar Group,Bacillus coli,Bacterium coli,Bacterium coli commune,Diffusely Adherent Escherichia coli,E coli,EAggEC,Enteroaggregative Escherichia coli,Enterococcus coli,Diffusely Adherent E. coli,Enteroaggregative E. coli,Enteroinvasive E. coli,Enteroinvasive Escherichia coli
D006863 Hydrogen-Ion Concentration The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations
D000645 Ammonium Sulfate Sulfuric acid diammonium salt. It is used in CHEMICAL FRACTIONATION of proteins. Sulfate, Ammonium
D014675 Vegetables A food group comprised of EDIBLE PLANTS or their parts. Vegetable
D018360 Crystallography, X-Ray The study of crystal structure using X-RAY DIFFRACTION techniques. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) X-Ray Crystallography,Crystallography, X Ray,Crystallography, Xray,X Ray Crystallography,Xray Crystallography,Crystallographies, X Ray,X Ray Crystallographies

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