Computation-guided analysis of paroxetine binding to hSERT reveals functionally important structural elements and dynamics.
Computation-guided analysis of paroxetine binding to hSERT reveals functionally important structural elements and dynamics.
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帕罗西汀与HSERT结合的计算引导分析揭示了功能上重要的结构元素和动力学。
DOI:
10.1016/j.neuropharm.2018.10.040
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发表时间:
2019-12-15
影响因子:
4.7
通讯作者:
Shi L
中科院分区:
文献类型:
--
作者:
Abramyan AM;Slack RD;Meena S;Davis BA;Newman AH;Singh SK;Shi L
The serotonin transporter (SERT) is one of the primary targets for medications to treat neuropsychiatric disorders and functions by exploiting pre-existing ion gradients of Na+, Cl−, and K+ to translocate serotonin from the synaptic cleft into the presynaptic neuron. Although recent hSERT crystal structures represent a milestone for structure-function analyses of mammalian neurotransmitter:sodium symporters, they are all derived from thermostabilized but transport-deficient constructs. Two of these structures are in complex with paroxetine, the most potent selective serotonin reuptake inhibitor known. In this study, by carrying out and analyzing the results of extensive and comparative molecular dynamics simulations while also re-evaluating the transport and binding properties of the thermostabilized constructs, we identified functionally important structural elements that are perturbed by these mutations, revealed unexpected dynamics in the central primary binding site of SERT, and uncovered a conceivable ambiguity in paroxetine’s binding orientation. We propose that the favored entropy contribution plays a significant role in paroxetine’s extraordinarily high affinity for SERT. Our findings lay the foundation for future mechanistic studies and rational design of high-affinity SERT inhibitors.
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影响因子:
13.5
作者:
Daws, Lynette C.;Gould, Georgianna G.
通讯作者:
Gould, Georgianna G.
影响因子:
4.6
作者:
Davis BA;Nagarajan A;Forrest LR;Singh SK
通讯作者:
Singh SK
DOI:
10.1073/pnas.0804659105
发表时间:
2008-07-29
影响因子:
11.1
作者:
Forrest, Lucy R.;Zhang, Yuan-Wei;Rudnick, Gary
通讯作者:
Rudnick, Gary
影响因子:
3.4
作者:
McGibbon, Robert T.;Beauchamp, Kyle A.;Pande, Vijay S.
通讯作者:
Pande, Vijay S.
影响因子:
7.3
作者:
Michino, Mayako;Boateng, Comfort A.;Shi, Lei
通讯作者:
Shi, Lei