Amino Acid Side Chains Flashcards

1
Q

Alanine

A

ALA
aliphatic

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2
Q

Glycine

A

GLY
aliphatic

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3
Q

Isoleucine

A

ILE
aliphatic

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4
Q

Leucine

A

LEU
aliphatic

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5
Q

Proline

A

PRO
aliphatic

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6
Q

Valine

A

VAL
aliphatic

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7
Q

Phenylalanine

A

PHE
aromatic

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8
Q

Tryptophan

A

TRP
aromatic

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9
Q

Tyrosine

A

TYR
aromatic

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10
Q

Aspartic Acid

A

ASP
acidic

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11
Q

Glutamic Acid

A

GLU
acidic

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12
Q

Arginine

A

ARG
basic

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13
Q

Histidine

A

HIS
basic

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14
Q

Lysine

A

LYS
basic

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15
Q

Serine

A

SER
has alcohol

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16
Q

Threonine

A

THR
has alcohol

17
Q

Cysteine

A

CYS
has sulfur

18
Q

Methionine

A

MET
has sulfur

19
Q

Asparagine

A

ASN
has amide

20
Q

Glutamine

A

GLN
has amide

21
Q

What are the aliphatic amino acids? (6)

What is their common feature?
What are the differing features?

A

alkanes

  • alanine (ALA) – methyl
  • glycine (GLY) – nothing
  • isoleucine (ILE) – 2-methylbutane
  • leucine (LEU) – 3-methylbutane
  • proline (PRO) – pentane ring
  • valine (VAL) – 1-methylpropane (tree/triangle)
22
Q

What are the aromatic amino acids? (3)

What is their common feature?
What are the differing features?

A

aromatic ring

  • phenylalanine (PHE) – one ring
  • tryptophan (TRP) – two rings together
  • tyrosine (TYR) – ring with OH
23
Q

What are the acidic amino acids? (2)

What is their common feature?
What are the differing features?

A

carboxylic acid

  • aspartic acid (ASP) – shorter (3 lines)
  • glutamic acid (GLU) – longer (4 lines)
24
Q

What are the basic amino acids? (3)

What is their common feature?
What are the differing features?

A

amine

  • arginine (ARG) – 2º amine / NH, NH, NH2
  • histidine (HIS) – cyclic amine
  • lysine (LYS) – 1º amine
25
Q

What are the amino acids that have alcohol?

What is their common feature?
What are the differing features?

A

alcohol group

  • serine (SER) – OH at end
  • threonine (THR) – extra methyl after OH
26
Q

What are the amino acids that have sulfur?

What is their common feature?
What are the differing features?

A

sulfur

  • cysteine (CYS) – SH
  • methionine (MET) – S only
27
Q

What are the amino acids that have an amide?

What is their common feature?
What are the differing features?

A

amide group (O=C-NH2)

  • asparagine (ASN) – shorter (3 lines)
  • glutamine (GLN) – longer (4 lines)
28
Q

Which amino acids are hydrophobic?

A
  • alanine (ALA)
  • glycine (GLY)
  • isoleucine (ILE)
  • leucine (LEU)
  • proline (PRO)
  • valine (VAL)
  • phenylalanine (PHE)
  • tryptophan (TRP)
  • methionine (MET)