Site-Directed Mutagenesis of Putative Active-Site Residues in Squalene-Hopene Cyclase
نویسندگان
چکیده
منابع مشابه
Site-directed mutagenesis experiments on the putative deprotonation site of squalene-hopene cyclase from Alicyclobacillus acidocaldarius.
To provide insight into the catalytic mechanism for the final deprotonation reaction of squalene-hopene cyclase (SHC) from Alicyclobacillus acidocaldarius, mutagenesis experiments were conducted for the following ten residues: Thr41, Glu45, Glu93, Arg127, Trp133, Gln262, Pro263, Tyr267, Phe434 and Phe437. An X-ray analysis of SHC has revealed that two types of water molecules ("front water" and...
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Despite the intensive research on plant chitinases, largely bolstered by their antifungal properties, little is known at present about the structure-activity relationships of these enzymes. Here we report the identification of essential active site residues in endochitinase Ch3, a class I enzyme abundant in chestnut seeds. Knowledge-based protein modeling as well as structural and sequence comp...
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ژورنال
عنوان ژورنال: European Journal of Biochemistry
سال: 1996
ISSN: 0014-2956,1432-1033
DOI: 10.1111/j.1432-1033.1996.0051r.x