enzyme kinetics Flashcards

1
Q

enzyme proteins are almost always ______ proteins

A

globular

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2
Q

three major structural families of enzymes

A

protein kinases
chromotypsins
ABC cassette

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3
Q

enzymes almost always have a _________________ to _________________

A

physical depressions/pockets/groove, to accommodate one or more substances

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4
Q

substrates bind to specific

A

active sites

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5
Q

enzyme active sites often contain _________, _________, ________

A

weak acids (D, E), weak bases (R, K), nucleophiles

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6
Q

amino acids that can function as nucleophiles

A

serine
threonine
tyrosine
lysine
histidine
cysteine

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7
Q

enzyme cofactors

A

helpers

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8
Q

types of reactions catalyzed by enzymes

A

addition reactions
elimination reactions
substitution reactions
oxidation reduction reactions

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9
Q

classes of enzymes

A

oxidoreductases
transferases
hydrolases
lyases
isomerases
ligases

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10
Q

oxidoreductases

A

oxidation-reduction reactions

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11
Q

transferases

A

substitution reactions

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12
Q

hydrolases

A

substitution reactions

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13
Q

lyases

A

addition reactions

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14
Q

isomerases

A

substitution reactions

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15
Q

ligases

A

addition reactions

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16
Q

1st order reaction

A
17
Q

factors that affect a chemical reaction

A

frequency of collisions
energy of average collision
success of the average collision

18
Q

how do enzymes impact activation energy

A

lower