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;) > Random & Enzymes & AA > Flashcards

Random & Enzymes & AA Flashcards

1
Q

What are functions of P450?

A
  1. Present in all tissues of body
  2. Metabolize toxic substance (in liver)
  3. Help to breakdown/synthesize Hormone
  4. Cholesterol synthesis
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2
Q

Effect of competitive inhibitor on Vmax & Km

A

Vmax: same
Km: increased

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3
Q

Where does N-glycosylation occur?

A

Rough ER

adding sugar glycan to nitrogen

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4
Q

What does primidine synthesis begin with?

A

ribose 5-phosphate

it makes ribose for nucleotide synthesis & NAPD for fatty acid & steroid

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5
Q

What process makes NADPH?

A

Pentose Phosphate Shunt

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6
Q

What’s the primary molecule for reduction biosynthesis?

A

NADPH

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7
Q

What is the precursor of Adenosine & Guanine?

A

IMP

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8
Q

Nucleotide vs nucleoside

A

nuceloside doesn’t have phsophate

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9
Q

What’s the difference between thymidine & uracil?

A

thymidine has a methyl group!

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10
Q

What’s the function of phosophdiester bonds?

A

Connect 2 AA

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11
Q

What’s a small molecule that can’t elicit immune response on its own?

What elicit an immune response when bond to a carrier protein?

A

Hapten

has to attach to larger molecules

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12
Q

Alpha helix & beta sheets form 2nd protein structure via?

A

Hydrogen Bonds

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13
Q

What is the main AA in the tertiary structure of protein?

A

Cysteine: disulfide bonds

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14
Q

What kind of force holds proteins in the lipid bilaer?

A

Hydrophobic interactions

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15
Q

tRNA wobbles is in the ____position of the codon

A

3rd

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16
Q

Which one plays an important role in detecting the starting codon for RNA transcription?

A

Sigma part

17
Q

What determines protein turnover?

A

H-bonds & peptide bones:

breakdown & synthesis of proteins

18
Q

What is the product of enzyme isocitrate dehydrogenase in TCA cycle?

A

Alpha-ketoglutarate

19
Q

What are 2 primary acceptors of amine groups in the amino acid metabolism?

A
  1. OAA

2. Alphaketogluterate

20
Q

What is phenylketonuria a deficiency of?

A

Phenylalaminine hydroxylase (PAH)

converts phenylalanine AA to another tyrosine

21
Q

Which AA is associated with the taste sensation of umami?

A

L-glutamate

22
Q

What is the charge of glutamic acid at pH 1?

A

+2

23
Q

What are 2 ketogenic AA?

A

Leucine & Lysine

24
Q

What is nissel body?

A

Rough ER

25
Q

What residues are phosphorylated to activate/deactivate enzymes?

A

Serine

26
Q

Patient is on low carb diet. What does he/she want a low level of?

A

Insulin productions with low levels of Malonyl CoA

27
Q

What is hormone dependent physiologic involution?

A

Apoptosis

;) (24 decks)

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