BIOC amino acids Flashcards
What amino acids are very non-polar?
A, V, L, I, M, F
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What amino acids are moderately non-polar?
C, G, P, W, Y
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What amino acids are polar uncharged?
S, Q, N, T
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Which amino acids are hydrogen bond acceptors and donors (accept and donate electrons) at pH 7?
Q, H, S, T, Y, N
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What amino acids are polar positively charged?
H, K, R
Which amino acids are only hydrogen bond acceptors at pH 7?
D, E
What are the hydrophobic AA?
Y, A, P, I, L, M, F, W, V
What amino acids are polar negatively charged?
D, E
What are the hydrophilic AA?
K, R, N, Q, E, D,
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Which amino acids are only hydrogen bond donors at pH 7?
R,K,W
Which AA favour the alpha-helix?
Ala, Arg, Gln, Glu, His, Leu, Lys, Met, (Phe)
What are the neutral AA?
Tyr, Thr, Ser, Pro, His, Gly
pH<pKa
protonated
Which AA have a charge of 0 when protonated, -1 when deprotonated?
D, E, Y, C, C-ter.
Which AA have a charge of +1 when protonated, 0 when deprotonated?
R, H, K, N-ter.
