Translations:Enzyme/50/ja: Difference between revisions

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Created page with "==熱力学== {{Anchor|Thermodynamics}} File:Enzyme catalysis energy levels 2.svg|thumb|400px|alt=触媒反応と無触媒反応の反応座標（x軸）とエネルギー（y軸）の2次元プロット。系のエネルギーは、反応物(x = 0)から遷移状態(x = 0.5)で最大になるまで着実に増加し、生成物(x = 1)まで着実に減少する。しかし、酵素触媒反応では、結合によって酵素-基質複合体（エネルギーはわず..."
 
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Latest revision as of 09:19, 22 February 2024

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==Thermodynamics==
[[File:Enzyme catalysis energy levels 2.svg|thumb|400px|alt=A two dimensional plot of reaction coordinate (x-axis) vs. energy (y-axis) for catalyzed and uncatalyzed reactions. The energy of the system steadily increases from reactants (x = 0) until a maximum is reached at the transition state (x = 0.5), and steadily decreases to the products (x = 1). However, in an enzyme catalysed reaction, binding generates an enzyme-substrate complex (with slightly reduced energy) then increases up to a transition state with a smaller maximum than the uncatalysed reaction.|The energies of the stages of a [[chemical reaction]]. Uncatalysed (dashed line), substrates need a lot of [[activation energy]] to reach a [[transition state]], which then decays into lower-energy products. When enzyme catalysed (solid line), the enzyme binds the substrates (ES), then stabilizes the transition state (ES<sup>‡</sup>) to reduce the activation energy required to produce products (EP) which are finally released.]]

熱力学

触媒反応と無触媒反応の反応座標（x軸）とエネルギー（y軸）の2次元プロット。系のエネルギーは、反応物(x = 0)から遷移状態(x = 0.5)で最大になるまで着実に増加し、生成物(x = 1)まで着実に減少する。しかし、酵素触媒反応では、結合によって酵素-基質複合体（エネルギーはわずかに減少）が生成し、その後、無触媒反応よりも最大値が小さい遷移状態まで増加する。
化学反応の各段階のエネルギー。非触媒反応（破線）では、基質が遷移状態に到達するのに多くの活性化エネルギーを必要とし、その後、よりエネルギーの低い生成物に崩壊する。酵素触媒反応（実線）の場合、酵素は基質（ES）と結合し、遷移状態（ES‡）を安定化させ、生成物（EP）を生成するのに必要な活性化エネルギーを減少させ、最終的に放出される。
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