Cracking the molecular origin of intrinsic tyrosine kinase activity through analysis of pathogenic gain-of-function mutations.
Cracking the molecular origin of intrinsic tyrosine kinase activity through analysis of pathogenic gain-of-function mutations.
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通过分析致病性功能获得性突变,破解内在酪氨酸激酶活性的分子起源。
DOI:
10.1016/j.celrep.2013.06.025
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发表时间:
2013-07-25
期刊:
影响因子:
8.8
通讯作者:
Mohammadi M
中科院分区:
文献类型:
--
作者:
Chen H;Huang Z;Dutta K;Blais S;Neubert TA;Li X;Cowburn D;Traaseth NJ;Mohammadi M
The basal (ligand-independent) kinase activity of receptor tyrosine kinases (RTKs) promotes trans-phosphorylation on activation loop tyrosines upon ligand-induced receptor dimerization, thus upregulating intrinsic kinase activity and triggering intracellular signaling. To understand the molecular determinants of intrinsic kinase activity, pathogenic FGF receptor mutants with gradations in gain-of-function activity were analyzed by X-ray crystallography and NMR spectroscopy. These structural analyses revealed a “two-state” dynamic equilibrium model whereby the kinase toggles between an ‘inhibited’, structurally rigid ground state, and a more dynamic and heterogeneous active state. The pathogenic mutations have different abilities to shift this equilibrium towards the active state. The increase in the fractional population of FGF receptors in the active state correlates with the degree of gain-of-function activity and clinical severity. Our data demonstrate that the fractional population of RTKs in the active state determines intrinsic kinase activity, and underscore how a slight increase in the active population of kinase can have grave consequences for human health.
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影响因子:
2.9
作者:
Banavali, Nilesh K.;Roux, Benoit
通讯作者:
Roux, Benoit
影响因子:
9.8
作者:
Bellus, GA;Spector, EB;Francomano, CA
通讯作者:
Francomano, CA
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
DOI:
10.1107/s0907444998003254
发表时间:
1998-09-01
期刊:
ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
影响因子:
--
作者:
Brunger, AT;Adams, PD;Warren, GL
通讯作者:
Warren, GL
影响因子:
--
作者:
Berk, David R.;Spector, Elaine B.;Bayliss, Susan J.
通讯作者:
Bayliss, Susan J.