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Enzyme Kinetics definitions

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  • Enzyme Kinetics
    Branch of biochemistry focused on quantifying how fast enzyme-catalyzed reactions proceed under varying conditions.
  • Reaction Rate
    Measurement of how quickly a biochemical reaction occurs, often symbolized as v and influenced by multiple factors.
  • Temperature
    Physical parameter that can accelerate reaction rates but may cause protein denaturation if increased excessively.
  • Substrate Concentration
    Amount of reactant available for enzyme binding, affecting reaction velocity and potentially causing cellular overcrowding.
  • Catalyst
    Substance, often an enzyme, that enables significant acceleration of reaction rates with minimal quantities.
  • Enzyme
    Biological molecule that acts as a catalyst, drastically increasing reaction rates in living systems.
  • Free Enzyme Concentration
    Quantity of enzyme molecules not currently bound to substrate, crucial for understanding reaction dynamics.
  • Enzyme-Substrate Complex
    Temporary molecular assembly formed when an enzyme binds its substrate, central to reaction progression.
  • Total Enzyme Concentration
    Sum of all enzyme molecules, both free and bound within enzyme-substrate complexes, used in kinetic calculations.
  • Product
    Molecule generated as a result of an enzyme-catalyzed reaction, measured to assess reaction completion.
  • Rate Constant
    Parameter denoted by k, representing the intrinsic speed of a reaction step under specific conditions.
  • Michaelis Constant
    Value symbolized as Km, indicating substrate concentration at which reaction velocity is half its maximum.
  • Catalytic Constant
    Parameter kcat, reflecting the number of substrate molecules converted to product per enzyme per unit time.
  • Initial Reaction Velocity
    Speed of a reaction at its very start, before significant substrate depletion or product accumulation.
  • Maximum Reaction Velocity
    Highest attainable speed of an enzyme-catalyzed reaction when substrate is abundant and enzyme is saturated.