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Biochem 2nd sem > Protein Metab > Flashcards

Protein Metab Flashcards

(59 cards)

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0
Q

Amino acid catabolism

A

Removal of alpha amino group

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1
Q

Major enzymes in amino acid biosynthesis

A

Glutamate dehydrogenase
Glutamine synthetase
Amino tramsferases

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2
Q

Oxidative deamination

Substrate

A

Amino acid

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3
Q

Oxidative deamination

Product

A

Alpha keto acid

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4
Q

Oxidative deamination

By product

A

Ammonia

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5
Q

Oxidative deamination

Enzymes

A

Glutamate dehydrogenase
D amino acid oxidase
L amino acid oxidase

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6
Q

Glutamate dehydrogenase

Co enzyme

A

NAD or NADPH

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7
Q

Glutamate dehydrogenase

Regulated by

A

Purine nucleotide

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8
Q

Glutamate dehydrogenase

Indicative of lower energy

A

ADP and GDP

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9
Q

Glutamate dehydrogenase

Indicative of high energy

A

ATP and GTP

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10
Q

D amino oxidase

Locations

A

Kidney

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11
Q

D amino oxidase

Associated with

A

Bacteria

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12
Q

L amino oxidase

Disease associated

A

Cerebrohepatorenal syndrome

Zellwegger

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13
Q

Non oxidative deamination enzyme

A

Amino acid dehydrase

Amino acid desulfyhydrase

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14
Q

Amino acid dehydrase

Cofactor

A

Pyroxidal PO4

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15
Q

Amino acid dehydrase

Acts on

A

OH group

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16
Q

Amino acid na may OH group

A

Serine
Threonine
Tyrosine

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17
Q

Amino aicd desulfyhydrase

Acts on

A

SH group

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18
Q

Amino acid na may SH group

A

Cysteine

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19
Q

Transamination

Process

A

Remove nitrogen (amine)

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20
Q

Transamination

Amino group acceptor

A

Alpha keto glutarate ( major acceptor )

Oxaloacetate ( minor acceptor )

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21
Q

Transamination

Products

A 
Glutamic acid ( major acceptor )
Aspartic acid ( minor acceptor )
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22
Q

Amino acid that will not undergo transamination

A

Lysine
Proline
Threonine

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23
Q

Transamination

Enzymes

Study These Flashcards
A

Transaminases

Aminotransferases

24
Transamination Coenzymes
Pyridoxal 5 PO4 Aldehyde containing Vitamin B6
25
Decarboxylation Product
Biogenic amines
26
Decarboxylation Serotonin from
Tryptophan
27
Decarboxylation Histamine from
Histidine
28
Decarboxylation Catecholamines from
Tyrosine or phenylalanine
29
For glycogen breakdown
Epinephrine
30
Deficiency will cause parkinsons disease
Dopamine
31
Natural tranquilizer
GABA
32
Allergic reaction
Histamine
33
Urea cycle AKA
Krebs henseleit cycle
34
Urea cycle Product
Urea
35
Urea cycle Location
Liver
36
Regulation of urea cycle Substrate availability
Production of ammonia = production of urea
37
Regulation of urea cycle Activation of carbamoyl phosphate CPS1
Activator N acetylglutamate N-AGA
38
Reaction of urea cycle NH4 is acted upon by carbamoyl phosphate synthetase
Product Carbamoyl phosphate
39
Reaction of urea cycle Carbamoyl phosphate react with ornithine
Product Citruline
40
Repeating the reaction above twice will form
Arginine
41
Arginine regenerates
Ornithine
42
Non standard alpha amino acid
Ornithine | Citruline
43
CPS1
Ammonia Urea biosynthesis Dependent on N-AGA
44
CPS2
Glutamine Pyrimidine biosynthesis Independent on N-AGA
45
HHH syndrome Stands for
Hyperornithinemia Hyperammonemia Homocitrullinuria
46
HHH syndrome Cause
Mutation of ORNT1 gene
47
ORNT1 gene codes for
Ornithine transporter
48
Enzyme affected CPS 1
Hyperammonemia type 1
49
Enzyme affected Ornithine transcarbamylase
Hyperammonemia type 2
50
Enzyme affected Arginosuccinate synthetase
Citullinemia
51
Enzyme affected Arginosuccinate
Argininosuccinate acciduria
52
Enzyme affected Arginase
Arginemia
53
Limit protein intake
Levulose
54
Promote production of of nitrogen
Benzoate+glycine = hippuric acid Phenylacetate+glutamine = phenylacetylglutamine
55
Ammonia intoxification manifestation
Blurring of vision Slerred speech Flapping tumors Coma
56
Pathways of keto acids
Synthetic pathway Glucogenic pathway Ketogenic pathway Miscellaneous pathway
57
Purely ketogenic
Leucine | Lysine
58
Both glucogenic and ketogenic
Isoleucine Tryptophan Tyrosine Phenylalanine

Biochem 2nd sem (2 decks)

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