Disulfide bonds determine growth hormone receptor folding, dimerisation and ligand binding
Disulfide bonds determine growth hormone receptor folding, dimerisation and ligand binding
复制标题
二硫键决定生长激素受体折叠、二聚化和配体结合
作者:
M. van den Eijnden;L. Lahaye;G. Strous
The growth hormone receptor contains seven cysteine residues in its extracellular domain. The six in the growth hormone binding domain form disulfide bonds, and help the receptor to gain its correct three-dimensional structure. In this study we replaced the cysteine for serine and alanine residues and investigated their role in growth hormone receptor folding, dimerisation and signal transduction. Folding and growth hormone binding capacity of the wild-type growth hormone receptor require less than two minutes for completion. Although less efficient, all mutant receptors arrive at the cell surface as pre-formed dimers. Disulfide bond C38-C48 is important for efficient maturation. The middle disulfide-bond, C83-C94, is important for ligand binding. Removing disulfide bond C108-C122 has little effect without affecting signalling. When two or all disulfide bonds are changed, ligand binding and activation are blocked. Dimerisation is delayed when all disulfide bonds are destroyed.
登录
查看更多内容
影响因子:
4.8
作者:
Frank,SJ;Gilliland,G;Kraft,AS;Arnold,CS
通讯作者:
Arnold,CS
影响因子:
3.3
作者:
P. V. Kerkhof;C. Santos;M. Sachse;J. Klumperman;G. Bu;G. Strous
通讯作者:
P. V. Kerkhof;C. Santos;M. Sachse;J. Klumperman;G. Bu;G. Strous
影响因子:
4
作者:
Sachse,M;vanKerkhof,P;Strous,GJ;Klumperman,J
通讯作者:
Klumperman,J
影响因子:
4.8
作者:
Szecowka,J;Tai,LR;Goodman,HM
通讯作者:
Goodman,HM