Catalase is a ubiquitous enzyme present in both the prokaryotic and eukaryotic cells of aerobic organisms. It serves, in part, to protect the cell from the toxic effects of small peroxides. Escherichia coli produces two catalases, HPI and HPII, that are quite distinct from other catalases in physical structure and catalytic properties ...
Catalase is a ubiquitous enzyme present in both the prokaryotic and eukaryotic cells of aerobic organisms. It serves, in part, to protect the cell from the toxic effects of small peroxides. Escherichia coli produces two catalases, HPI and HPII, that are quite distinct from other catalases in physical structure and catalytic properties. HPII, studied in this work, is encoded by the katE gene, and has been characterized as an oligomeric, monofunctional catalase containing one cis-heme d prosthetic group per subunit of 753 residues.
Related Citations:
2.8 A Crystal Structure of Catalase Hpii from Escherichia Coli Bravo, J., Verdaguer, N., Tormo, J., Betzel, C., Switala, J., Loewen, P.C., Fita, I. (1993) Joint Ccp4 Esf-eacbm Newsletter On Protein Crystallography 28: 79
Crystallization and Preliminary X-Ray Diffraction Analysis of Catalase Hpii from Escherichia Coli Tormo, J., Fita, I., Switala, J., Loewen, P.C. (1990) J Mol Biol 213: 219
The Refined Structure of Beef Liver Catalase at 2.5 A Resolution Fita, I., Silva, A.M., Murthy, M.R.N., Rossmann, M.G. (1986) Acta Crystallogr B 42: 497
Organizational Affiliation:
Departamento de Ingeniería Química, Universidad Politécnica de Catalunña, Barcelona, Spain.
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