Purification, Characterization, and Gene Sequencing of a Catalase from an Alkali- and Halo-tolerant Bacterium, Halomonas sp. SK1.
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- PHUCHAROEN Krisana
- <i>Department of Biological and Chemical Engineering, Faculty of Engineering, Gunma University</i>
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- HOSHINO Kiichi
- <i>Morin Chemical Industrial Co., Ltd.</i>
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- TAKENAKA Yuuki
- <i>Department of Biological and Chemical Engineering, Faculty of Engineering, Gunma University</i>
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- SHINOZAWA Takao
- <i>Department of Biological and Chemical Engineering, Faculty of Engineering, Gunma University</i>
Bibliographic Information
- Other Title
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- Purification, Characterization, and Gene Sequencing of a Catalase from an Alkali- and Halo-tolerant Bacterium,<i>Halomonas</i>sp. SK1
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Abstract
An alkali- and halo-tolerant bacterium with high catalase activity was isolated and identified as a new species of the genus Halomonas. Its catalase (HktA) was simply purified by two steps of liquid chromatography. A 71.4% yield of the catalase was obtained with 97% purity on SDS-PAGE. The specific activity of HktA (57,900 U/mg protein) was two times higher than that of bovine liver catalase. The purified enzyme is inhibited by KCN, NH2OH, NaN3, and 3-amino-1,2,4-triazole, active at pH 5.0-11.0, thermo-sensitive, and KCl- tolerant. HktA is suggested to be a typical catalase, a homotetrameric protein containing heme groups in the active sites. The nucleotide sequence of the catalase gene (hktA) comprises 1,530 bp, encoding a protein of 509 amino acid residues. The deduced amino acid sequence of the hktA shares 99% identity with that of Vibrio rumoiensis S-1T.<br>
Journal
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- Bioscience, Biotechnology, and Biochemistry
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Bioscience, Biotechnology, and Biochemistry 66 (5), 955-962, 2002
Japan Society for Bioscience, Biotechnology, and Agrochemistry
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Details 詳細情報について
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- CRID
- 1390282681449955584
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- NII Article ID
- 110002693764
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- NII Book ID
- AA10824164
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- COI
- 1:CAS:528:DC%2BD38XktlSku74%3D
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- ISSN
- 13476947
- 09168451
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- NDL BIB ID
- 6179935
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- PubMed
- 12092846
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed