Dextransucrase: studies on donor substrate specificity.
Dextransucrase: studies on donor substrate specificity.
复制标题
葡聚糖蔗糖酶:供体底物特异性的研究。
DOI:
10.1016/0003-9861(81)90409-4
复制
发表时间:
1981
影响因子:
3.9
通讯作者:
Mayer,RM
中科院分区:
文献类型:
--
作者:
Grier,TJ;Mayer,RM
Previous studies (D. S. Genghoff and E. J. Hehre,Proc. Soc. Exp. Biol. Med., 1972,140, 1298–1301) have shown that an α-linked fluorine atom at C-1 of glucose provided sufficient activation to permit this analog to be a donor substrate for dextransucrase. In order to study the specificity at the donor substrate binding site, a series of α-1-fluorosugars have been synthesized. In kinetic experiments, it has been determined that they served as competitive inhibitors of sucrose, the natural substrate. A comparison of theKi's provided information about the importance of specific changes in the glucose moiety with regard to binding to the enzyme. Similar kinetic studies were carried out with several β-1-fluorosugars, and the corresponding free monosaccharides. These were found to be noncompetitive inhibitors, and to bind poorly. The α-1-fluorosugars were also examined as donor substrates in reactions with known acceptors. With the exception of α-1-fluoroglucose, none of these analogs were active in this capacity.
登录
查看更多内容
DOI:
10.1152/ajpregu.1985.248.5.r627
发表时间:
1985
期刊:
The American journal of physiology
影响因子:
--
作者:
Young,JB;Kaufman,LN;Saville,ME;Landsberg,L
通讯作者:
Landsberg,L
影响因子:
--
作者:
James B. Young;L. Landsberg
通讯作者:
L. Landsberg
DOI:
10.1126/science.7444462
发表时间:
1981
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Donald,P;Pitts,CC;Pohl,SL
通讯作者:
Pohl,SL
DOI:
10.1152/ajpendo.1983.245.1.e67
发表时间:
1983
期刊:
The American journal of physiology
影响因子:
--
作者:
Young,JB;Fish,S;Landsberg,L
通讯作者:
Landsberg,L
影响因子:
64.8
作者:
James B. Young;L. Landsberg
通讯作者:
L. Landsberg