ISSN:
1433-4909
Keywords:
Key words Superoxide dismutase
;
Purification
;
Alkaliphile
;
Bacillus
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract A mangano-superoxide dismutase (EC 1.15.1.1) was purified to homogeneity from a strain of alkaliphilic Bacillus for the first time. The purified protein, with an isoelectric point of pH 4.5, had a molecular mass of approximately 50 kDa and consisted of two identical subunits (25 kDa). The N-terminal amino acid sequence was Ala-Tyr-Lys-Leu-Pro-Glu-Leu-Pro-Tyr-Ala-Ala-Asn-Ala-Leu-Glu-Pro-His-Ile-Asp-Glu-Ala. The optimum pH and temperature for the reaction were 7.5 and 35°C, respectively. The properties of the superoxide dismutase were compared with those of the enzyme from thermophilic Bacillus stearothermophilus.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s007920050017
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