Crystal structure of myoglobin form a synthetic gene
β Scribed by George N. Phillips Jr.; Robert M. Arduini; Barry A. Springer; Stephen G. Sligar
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 890 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0887-3585
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β¦ Synopsis
Abstract
Crystal have been grown of myoglobin produced in Escherichia coli from a synthetic gene, and the structure has been solved to 1.9 Γ resolution. The space group of the crystals is P6, which is different from previously solved myoglobin crystal forms. The synthetic myoglobin is essentially identical to myoglobin isolated from sperm whale tissue, except for the retention of the initiator methionine at the Nβterminus and the substitution of asparagine for aspartic acid at position 122. Superposition of the coordinates of native and synthetic sperm whale myoglobins reveals only minor changes in the positions of main chain atoms and roeientation of some surface side chains. Crystals of variant of the βsyntheticβ myoglobin have also been grown for structural analysis of the role of key amino acid residues in ligand and specificity.
π SIMILAR VOLUMES
The structure of the ferrous nitric oxide form of native sperm whale myoglobin has been determined by X-ray crystallography to 1.7 Γ resolution. The nitric oxide ligand is bent with respect to the heme plane: the Fe-N-O angle is 112Β°. This angle is smaller than those observed in model compounds and
Single crystals of a new form of \(\mathrm{K}_{2} \mathrm{FeF}_{5}\) have been grown by hydrothermal synthesis in concentrated HF solutions. The structure is established from single crystal X-ray diffraction data: space group Pbam, \(Z=8, a=7.3591\) (4) \(\AA, b=23.0897\) (10) \(\AA\), and \(c=5.705