Amino Acids PkA Flashcards

1
Q

Aspartate

A
Protonated form: -COOH
Charge: 0 
Deprotonated form: -COO^- 
Charge: -1 
PKa: 4
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2
Q

Glutamate

A
Protonated form: CH2-COOH 
Charge: 0 
Deprotonated form: CH2-COO^- 
Charge: -1 
PKa: 4
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3
Q

Histidine

A
Protonated form: + charge on one of the N's 
Charge: +1 
Deprotonated form: Only one NH and one N
Charge: 0 
PKa: 6
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4
Q

Alpha-Amino

A
Protonated form: -NH3+ 
Charge: +1 
Deprotonated form: -NH2 
Charge: 0 
PKa: 9
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5
Q

Lysine

A

Protonated form: CH3-CH2-CH2-CH2-CH2-NH3+
Charge: +1
Deprotonated form: CH3-CH2-CH2-CH2-CH2-NH2
Charge: 0
PKa: 10

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6
Q

Arginine

A
Protonated form: Look up structure: =NH2+ 
Charge: +1 
Deprotonated form: NH= 
Charge: 0 
PKa: 12
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7
Q

Alpha carboxyl

A
Protonated form: -COOH 
Charge: 0 
Deprotonated form: -COO^- 
Charge:-1 
PKa: 2
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