BIS 102 Amino Acids

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Description and Tags

predominant form at pH 7, except for histidine

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20 Terms

1

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Asparagine

One-Letter: N

One carbon and one amide

<p>One-Letter: N</p><p>One carbon and one amide</p>

2

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Glutamine

One-Letter: Q

2 carbon and 1 amide

<p>One-Letter: Q</p><p>2 carbon and 1 amide</p>

3

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Serine

One-letter: S

1 carbon and 1 OH

<p>One-letter: S</p><p>1 carbon and 1 OH</p>

4

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Threonine

One-letter: T

R group: 1 OH on secondary carbon

<p>One-letter: T</p><p>R group: 1 OH on secondary carbon</p>

5

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Glycine

One-letter: G

R-group: 1 H

<p>One-letter: G</p><p>R-group: 1 H</p>

6

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Aspartic Acid

One-letter: D

Acidic, have 0 or - charge

pKa: 3.9

R-group: 1 carbon and 1 COO- (in pH 7)

<p>One-letter: D</p><p>Acidic, have 0 or - charge</p><p>pKa: 3.9</p><p>R-group: 1 carbon and 1 COO- (in pH 7)</p>

7

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Glutamic acid

One-Letter: E

Acidic, have 0 or - charge

pKa: 4.2

R-group: 2 carbons and 1 COO- (in pH 7)

<p>One-Letter: E</p><p>Acidic, have 0 or - charge</p><p>pKa: 4.2</p><p>R-group: 2 carbons and 1 COO- (in pH 7)</p>

8

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Lysine

One-letter: K

Basic, have 0 or + charge

pKa: 10.5

R-group: has NH3+ on epsilon carbon

<p>One-letter: K</p><p>Basic, have 0 or + charge</p><p>pKa: 10.5</p><p>R-group: has NH3+ on epsilon carbon</p>

9

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Arginine

One-letter: R

Basic, have 0 or + charge

pKa: 12.5

R-group: contains guanidino group (resonance of 3 N)

<p>One-letter: R</p><p>Basic, have 0 or + charge</p><p>pKa: 12.5</p><p>R-group: contains guanidino group (resonance of 3 N)</p>

10

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Histidine

One-letter: H

Basic, has 0 or + charge

pKa: 6.0

R-group: contains imidazole group

<p>One-letter: H</p><p>Basic, has 0 or + charge</p><p>pKa: 6.0</p><p>R-group: contains imidazole group</p>

11

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Tyrosine

One-letter: Y

Ionizable, 0 at pH 7 but charge depends on pH

pKa: 10.1

R-group: contains phenol group

<p>One-letter: Y</p><p>Ionizable, 0 at pH 7 but charge depends on pH</p><p>pKa: 10.1</p><p>R-group: contains phenol group</p>

12

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Cysteine

One-letter: C

Ionizable, 0 at pH 7 but charge depends on pH

pKa: 8.3

R-group: contains thiol group

<p>One-letter: C</p><p>Ionizable, 0 at pH 7 but charge depends on pH</p><p>pKa: 8.3</p><p>R-group: contains thiol group</p>

13

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Leucine

One-letter: L

Hydrophobic, aliphatic chain

R-group: isopropyl group

<p>One-letter: L</p><p>Hydrophobic, aliphatic chain</p><p>R-group: isopropyl group</p>

14

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Isoleucine

One-letter: I

Most Hydrophobic, aliphatic chain

R-group: linear carbon chain with 1 carbon branch

<p>One-letter: I</p><p>Most Hydrophobic, aliphatic chain</p><p>R-group: linear carbon chain with 1 carbon branch</p>

15

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Valine

One-letter: V

Hydrophobic, aliphatic chain

R-group: 3 carbons, 2 are branched

<p>One-letter: V</p><p>Hydrophobic, aliphatic chain</p><p>R-group: 3 carbons, 2 are branched</p>

16

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Alanine

One-letter: A

Hydrophobic, aliphatic

R-group: methyl group

<p>One-letter: A</p><p>Hydrophobic, aliphatic</p><p>R-group: methyl group</p>

17

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Methionine

One-letter: M

Hydrophobic, aliphatic

R-group: SCH₃ group at end of carbon chain

<p>One-letter: M</p><p>Hydrophobic, aliphatic</p><p>R-group: SCH<sub>3</sub> group at end of carbon chain</p>

18

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Proline

One-letter: P

Hydrophobic

R-group: aliphatic chain binds to amino group on the backbone

<p>One-letter: P</p><p>Hydrophobic</p><p>R-group: aliphatic chain binds to amino group on the backbone </p>

19

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Phenylalanine

One-letter: F

Hydrophobic, aromatic ring

R-group: benzene ring

<p>One-letter: F</p><p>Hydrophobic, aromatic ring</p><p>R-group: benzene ring</p>

20

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Tryptophan

One-letter: W

Hydrophobic, aromatic

R-group: contains indole ring

<p>One-letter: W</p><p>Hydrophobic, aromatic</p><p>R-group: contains indole ring</p>