Activation mechanism of rabbit skeletal muscle myosin light chain kinase 5′‐p‐Fluorosulfonylbenzoyl adenosine as a probe of the MgATP‐binding site of the calmodulin‐bound and calmodulin‐free enzyme
Activation mechanism of rabbit skeletal muscle myosin light chain kinase 5′‐p‐Fluorosulfonylbenzoyl adenosine as a probe of the MgATP‐binding site of the calmodulin‐bound and calmodulin‐free enzyme
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兔骨骼肌肌球蛋白轻链激酶 5′-p-氟磺酰苯甲酰腺苷作为钙调蛋白结合酶和无钙调蛋白酶 MgATP 结合位点探针的激活机制
DOI:
10.1016/0014-5793(91)80977-b
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发表时间:
1991
期刊:
影响因子:
3.5
通讯作者:
E. Krebs
中科院分区:
文献类型:
--
作者:
Peter J. Kennelly;J. Colburn;J. Lorenzen;A. Edelman;J. Stull;E. Krebs
5′‐p‐Fluorosulfonylbenzoyl adenosine (FSBA), an ATP‐like affinity labelling reagent, reacted with rabbit skeletal muscle myosin light chain kinase (skMLCK) and its calmodulin complex in a site‐specific manner. Reaction was dependent upon the presence of the adenosine moiety of FSBA, saturated with increasing FSBA, was inhibited by MgATP, and was accompanied by stoichiometric incorporation of [14C]FSBA. The kinetic constants describing the reaction were similar for skMLCK and its calmodulin complex:k3= −0.040 min−1and −0.038 mint‐1, andKi=0.18 mM and 0.40 mM, respectively. It is concluded that the MgATP‐binding site on skMLCK remains accessible at all times and maintains a near constant conformation.
DOI:
--
发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Zot,HG;Puett,D
通讯作者:
Puett,D
DOI:
--
发表时间:
1991
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Jarrett,HW;Madhavan,R
通讯作者:
Madhavan,R
DOI:
10.1074/jbc.270.17.10125
发表时间:
1995
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Gao,ZH;Zhi,G;Herring,BP;Moomaw,C;Deogny,L;Slaughter,CA;Stull,JT
通讯作者:
Stull,JT