1gza

From Proteopedia

Revision as of 13:18, 30 October 2007

PEROXIDASE

Overview

The site and characteristics of iodide binding to Arthromyces ramosus, peroxidase were examined by x-ray crystallographic analysis, 1H and 127I, NMR, and kinetic studies. X-ray analysis of an A. ramosus peroxidase, crystal soaked in a KI solution at pH 5.5 showed that a single iodide ion, is located at the entrance of the access channel to the distal side of the, heme and lies between the two peptide segments, Phe90-Pro91-Ala92 and, Ser151-Leu152-Ile153, 12.8 A from the heme iron. The distances between the, iodide ion and heme peripheral methyl groups were all more than 10 A. The, findings agree with the results obtained with 1H NMR in which the chemical, shift and intensity of the methyl groups in the hyperfine shift region of, A. ramosus peroxidase were hardly affected by the addition ... [(full description)]

About this Structure

1GZA is a [Single protein] structure of sequence from [Eukaryota] with CA, IOD and HEM as [ligands]. Active as [Peroxidase], with EC number [1.11.1.7]. Structure known Active Sites: CA1, CA2 and GL1. Full crystallographic information is available from [OCA].

Reference

Binding of iodide to Arthromyces ramosus peroxidase investigated with X-ray crystallographic analysis, 1H and 127I NMR spectroscopy, and steady-state kinetics., Fukuyama K, Sato K, Itakura H, Takahashi S, Hosoya T, J Biol Chem. 1997 Feb 28;272(9):5752-6. PMID:9038188

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