Thermolysin in the absence of substrate has an open conformation.
Thermolysin in the absence of substrate has an open conformation.
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在没有底物的情况下,嗜热菌蛋白酶具有开放构象。
DOI:
10.1107/s090744490200584x
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发表时间:
2002
期刊:
影响因子:
--
通讯作者:
Matthews,BrianW
中科院分区:
文献类型:
--
作者:
Hausrath,AndrewC;Matthews,BrianW
The bacterial neutral proteases have been proposed to undergo hinge-bending during their catalytic cycle. However, in thermolysin, the prototypical member of the family, no significant conformational change has been observed. The structure of thermolysin has now been determined in a new crystal form that for the first time shows the enzyme in the absence of a ligand bound in the active site. This is shown to be an `open' form of the enzyme. The relative orientation of the two domains that define the active-site cleft differ by a 5° rotation relative to their positions in the previously studied ligand-bound `closed' form. Based on structural comparisons, kinetic studies on mutants and molecular-dynamics simulations, Gly78 and Gly135–Gly136 have previously been suggested as two possible hinge regions. Comparison of the `open' and `closed' structures suggests that neither of the proposed hinge regions completely accounts for the observed displacement. The concerted movement of a group of side chains suggested to be associated with the hinge-bending motion is, however, confirmed.
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影响因子:
5.6
作者:
R. Pauptit;R. Karlsson;D. Picot;J. Jenkins;Ann;J. Jansonius
通讯作者:
J. Jansonius
影响因子:
5.6
作者:
S. Remington;Brian W. Matthews
通讯作者:
Brian W. Matthews
影响因子:
2.9
作者:
O. R. Veltman;V. Eijsink;Gert Vriend;A. D. Kreij;Gerard Venema;B. Burg
通讯作者:
B. Burg
DOI:
10.2210/pdb1ezm/pdb
发表时间:
1993-10
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
M. M. Thayer-M.;K. Flaherty;D. Mckay
通讯作者:
M. M. Thayer-M.;K. Flaherty;D. Mckay
DOI:
--
发表时间:
1992
期刊:
European Journal of Biochemistry
影响因子:
--
作者:
Wilhelm Stark;R. Pauptit;Keith S. Wilson;J. Jansonius
通讯作者:
J. Jansonius