Amino acids Flashcards

1
Q

Phenylalanine metabolism: Enzyme targeted in Parkinson’s

A

dopa decarboxylase

inhibiting dopa decarcobylase results in inhibiting dopa conversion to dopamine

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2
Q

Enzyme catalyzing conversion of dopa to melanin

A

tyrosinase

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3
Q

Cofactor needed for phenylalanine–>tyrosine

A

BH4

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4
Q

Cofactor needed for tyrosine–> dopa

A

BH4

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5
Q

Cofactor needed for dopamine–>NE

A

vit C

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6
Q

Cofactor needed for dopa–>dopamine

A

vit B6

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7
Q

Cofactor needed for NE–>Epi

A

SAM

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8
Q

Enzyme catalyzing dopa to dopamine

A

dopa decarboxylase

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9
Q

Hormone that facilitates converting NE to epi

A

cortisol

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10
Q

Amino acid required in heme synthesis

A

glycine

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11
Q

PVT TIM HaLL?

A
Phenylalanine
Valine
Threonine
Tryptophan
Isolecuine
Methionine
Histidine
Leucine
Lysine
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12
Q

Basic AA’s

A

Lysine (extra ammonia group)
Arginine (extra ammonia group)
Histidine

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13
Q

Chirality of amino acids found in proteins

A

L-

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14
Q

Acidic AA’s

A

Aspartic acid

Glutamic acid

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15
Q

Amino acids important during periods of growth

A

arginine
histidine

(BASE your build with BASIC amino acids…excluding lysine)

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16
Q

AA’s negatively charged at body pH

A

aspartate

glutamate

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17
Q

AA’s positively charged at body pH

A

arginine

lysine

18
Q

Basic amino acid with NO charge

A

histidine

*the exception
other basic AA’s have positive charge at body pH

19
Q

Amino acids important for nuclear localization signals

A

arginine and lysine

20
Q

Amino acids heavily found in histones

A

arginine
lysine

responsible for POSITIVE charge –> allows easy association with NEGATIVELY charged DNA

21
Q

Arginine required for

A

Creatine
Nitric oxide
Urea

22
Q

AA precursor for Niacin

A

Tryptophan

23
Q

Amino acids requiring B6 in production of their derivatives:

A

tryptophan
histidine
glycine
glutamate

24
Q

AA precursor of porphyrin

A

glycine

heme synthesis

25
B6 is not required to make glutathione from this precursor amino acid:
glutamate
26
Histamine requires this cofactor
Vit B6
27
GABA precursor
Glutamate
28
Cofactors required to make serotonin? What amino acid is serotonin derived from?
BH4 and vit B6 tryptophan
29
Glutamate requires vitamin B6 to make
GABA
30
AA precursor of melatonin
tryptophan
31
ketogenic AAs
leucine | lysine
32
glucogenic AAs
methionine valine histidine
33
glucogenic/ketogenic AAs
isoleucine phenylalanine threonine tryptophan
34
Deficiency of phebylalanine hydroxylase
PKU also results from deficiency of BH4
35
Deficiency in tyronase
albinism
36
Deficiecny in homogentisate oxidase
alkaptonuria
37
Breaks down dopamine into HVA
MAO/COMT
38
Required cofactor for PNMT
PNMT catalyzes NE to Epi reaction SAM (S-adenosyl methionine) is required cofactor
39
Precursor to SAM
methionine
40
Transfers methyl units to NE to create Epi
SAM
41
Transfers methyl units to create phosphocreatine
SAM