Purification and characterization of the aromatic desulfinase, 2-(2'-hydroxyphenyl)benzenesulfinate desulfinase.
Purification and characterization of the aromatic desulfinase, 2-(2'-hydroxyphenyl)benzenesulfinate desulfinase.
复制标题
芳香族脱硫酶、2-(2-羟苯基)苯亚磺酸脱硫酶的纯化和表征。
DOI:
10.1016/s0003-9861(03)00230-3
复制
发表时间:
2003
影响因子:
3.9
通讯作者:
G. T. Mrachko
中科院分区:
文献类型:
--
作者:
L. Watkins;R. Rodriguez;D. Schneider;R. Broderick;M. Cruz;R. Chambers;E. Ruckman;M. Cody;G. T. Mrachko
2-(2′-Hydroxyphenyl)benzenesulfinate desulfinase (HPBS desulfinase) catalyzes the cleavage of the carbon–sulfur bond of 2-(2′-hydroxyphenyl)benzenesulfinate (HPBS) to form hydroxybiphenyl and sulfite. This is the final step in the desulfurization of dibenzothiophene, the organosulfur compound used to study biodesulfurization of petroleum middle distillate. HPBS desulfinase was purified 1600-fold from Rhodococcus IGTS8. The purification was monitored using a spectrofluorimetric assay and SDS–PAGE. The pI of HPBS desulfinase is 5.6, the temperature optimum is 35°C, and the pH optimum is 7.0. HPBS desulfinase has a Kmof 0.90±0.15μM and a kcatof 1.3±0.07min−1. Several analogs were tested for their ability to act as substrates or inhibitors of HPBS desulfinase. No alternative substrates and very few inhibitors were identified. HPBS desulfinase activity decreases in the presence of Cu2+and Zn2+, while no metals significantly enhance enzyme activity. HPBS desulfinase is susceptible to tyrosine, tryptophan, and cysteine specific modification agents.
登录
查看更多内容
DOI:
10.1021/bi980647k
发表时间:
1998
期刊:
Biochemistry.
影响因子:
--
作者:
Tai,CH;Yoon,MY;Kim,SK;Rege,VD;Nalabolu,SR;Kredich,NM;Schnackerz,KD;Cook,PF
通讯作者:
Cook,PF
影响因子:
13.5
作者:
W. Montfort;A. Weichsel
通讯作者:
W. Montfort;A. Weichsel
影响因子:
2.9
作者:
FISHER, AJ;RAUSHEL, FM;RAYMENT, I
通讯作者:
RAYMENT, I
DOI:
10.1086/515164
发表时间:
1999
期刊:
Clinical infectious diseases : an official publication of the Infectious Diseases Society of America.
影响因子:
--
作者:
Chu,L;Ebersole,JL;Kurzban,GP;Holt,SC
通讯作者:
Holt,SC