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Aminoacids Biochem > Aminoacids Chemistry > Flashcards

Aminoacids Chemistry Flashcards

1
Q

Aliphatic AA

A

Unbranched-Glycine, Alanine
Branched- leucine, valine, isoleucine
Sulfur- cysteine, methionine
Hydroxyl- Serine, threonine
Monocarboxylic di amino- lysine, Arginine( contains guanidium group)
Mono amino dicarboxylic- glutamate, aspartate
Amide- asparagine, glutamine

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2
Q

Aromatic AA

A

tyrosine, phenyl Alanine

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3
Q

Heterocyclic

A

Tryptophan, histidine

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4
Q

Imino

A

Proline

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5
Q

DerivedAA, found in proteins

A

Hydroxy lysine, hydroxy proline found in collagen, gamma carboxylation of glutamate is essential in clotting processes

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6
Q

Derived AA, free from proteins

A

Citrulline, ornithine, homocysteine

Non alpha- GABA derived from glutamic acid, beta alanine found in patothenic acid and coenzyme A

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7
Q

AA w non polar side chains

A

Alanine, valine, leucine, isoleucine, methionine, phenyl alanine, tryphtophan, proline

Hydrophobic

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8
Q

AA w non ionic polar side chains

A

Glycine, serine, threonine, cysteine, tyrosine, glutamine, asparagine

Generally hydrophilic but cysteine and tyrosine may show hydrophobic nature when present in the interior

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9
Q

AA with ionic polar side chains

A

Acidic- Glutamate, aspartate
Basic- lysine, Arginine, histidine

Hydrophilic

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10
Q

Ketogenic

A

Leucine

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11
Q

Keto+gluco

A

Lysine, isoleucine, phenyl alanine, tyrosine, tryphtophan

Lysine predominantly ketogenic

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12
Q

Gluco

A

Remaining 14

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13
Q

Essential/ indispensable+ semi

A

Isoleucine, leucine, threonine, lysine, methionine, phenylalanine, tryphtophan, valine

Arginine, histidine

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14
Q

Non essential/ dispensable

A

All body proteins contain all 10 non essential AA

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15
Q

AA 21 and 22

A

Selenocysteine- se is present instead of SH group in cysteine (Secys,SeC)

Pyrrolysine (Pyl) - lysine in an amide linkage to substitiuted pyrrolidine 5 carboxylate. Present in methyl transferase enzyme of certain bacteria

These 2 encoded by stop codons

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16
Q

Sweet

A

Glycine, proline, valine, Alanine, tryphtophan, histidine

17
Q

Tasteless

A

Leucine

18
Q

Bitter

A

Arginine, isoleucine

Aminoacids Biochem (1 decks)

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