旋转分子马达的泵浦过程及其能量效率
Pump process of the rotatory molecular motor and its energy efficiency
摘要：
研究了受ATP合成酶$F_o$旋转马达启发的棘轮模型的泵送过程。在这个模型中有两种特征时间。一个是动力学的，系统的弛豫时间。另一些是化学反应，即质子与马达蛋白结合或解离的化学反应速率。它们之间的不等式影响物理量的行为，例如旋转速度和穿过膜的质子泵送速率。计算了能量转换效率，并讨论了能量转换效率提高的条件。质子泵送速率和效率具有峰值，其中化学反应速率和弛豫时间的倒数之间的某组不等式成立。对于一定的负载值，效率也有一个峰值。泵过程的最佳效率条件与马达过程的最佳效率条件是一致的。
英文摘要：
The pump process of the ratchet model inspired by the $F_o$ rotatory motor of ATP synthase is investigated. In this model there are two kinds of characteristic time. One is dynamical, the relaxation time of the system. Others are chemical, the chemical reaction rates at which a proton binds to or dissociates from the motor protein. The inequalities between them affect the behavior of the physical quantities, such as the rotation velocity and the proton pumping rates across the membrane. The energy transduction efficiency is calculated and the condition under which the efficiency can become higher is discussed. The proton pumping rate and the efficiency have a peak where a certain set of inequalities between the chemical reaction rates and the reciprocal of the relaxation time holds. The efficiency also has a peak for a certain value of the load. The best efficiency condition for the pump process is consistent with that for the motor process.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
