Table 27.1 The Common Amino Acids Found in Proteins Watch a video explanation Nonpolar Side Chains CO COO Alanine Phenylalanine (Phe, F) (Ala, A) NH,* NH,* COO Glycine (Gly, G) NH,+ Proline COO (Pro, P) H H. COO Isoleucine (Ile, I) COO- ÑH,* NH,+ Tryptophan (Trp, W) COO Leucine (Leu, L) H NH,+ COO Methionine .COO Valine H3C (Val, V) (Met, M) NH,+ NH,+ Polar Side Chains H,N. COO COO Asparagine (Asn, N) HO Serine NH,+ NH,+ (Ser, S) OH COO COO Glutamine Threonine H,N (Gln, Q) NH, (Thr, T) ÑH,+ Acidic Side Chains Basic Side Chains COO NH, Aspartic acid (Asp, D) Arginine (Arg, R) COO- NH,+ H,N NH,+ COO Glutamic acid (Glu, E) COO NH,* COO Histidine NH,+ (His, H) Cysteine (Cys, C) HS NH, H,N COO- COO Tyrosine (Tyr, Y) Lysine (Lys, K) NH,+ NH,+ HO

Biochemistry
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Chapter1: Biochemistry: An Evolving Science
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Question

Of the 20 protein-derived amino acids shown in Table 27.1, how many contain

Q.) an aromatic ring

Table 27.1 The Common Amino Acids Found in Proteins
Watch a video
explanation
Nonpolar Side Chains
CO
COO
Alanine
Phenylalanine
(Phe, F)
(Ala, A)
NH,*
NH,*
COO
Glycine
(Gly, G)
NH,+
Proline
COO
(Pro, P)
H
H.
COO
Isoleucine
(Ile, I)
COO-
ÑH,*
NH,+
Tryptophan
(Trp, W)
COO
Leucine
(Leu, L)
H
NH,+
COO
Methionine
.COO
Valine
H3C
(Val, V)
(Met, M)
NH,+
NH,+
Polar Side Chains
Transcribed Image Text:Table 27.1 The Common Amino Acids Found in Proteins Watch a video explanation Nonpolar Side Chains CO COO Alanine Phenylalanine (Phe, F) (Ala, A) NH,* NH,* COO Glycine (Gly, G) NH,+ Proline COO (Pro, P) H H. COO Isoleucine (Ile, I) COO- ÑH,* NH,+ Tryptophan (Trp, W) COO Leucine (Leu, L) H NH,+ COO Methionine .COO Valine H3C (Val, V) (Met, M) NH,+ NH,+ Polar Side Chains
H,N.
COO
COO
Asparagine
(Asn, N)
HO
Serine
NH,+
NH,+
(Ser, S)
OH
COO
COO
Glutamine
Threonine
H,N
(Gln, Q)
NH,
(Thr, T)
ÑH,+
Acidic Side Chains
Basic Side Chains
COO
NH,
Aspartic acid
(Asp, D)
Arginine
(Arg, R)
COO-
NH,+
H,N
NH,+
COO
Glutamic acid
(Glu, E)
COO
NH,*
COO
Histidine
NH,+
(His, H)
Cysteine
(Cys, C)
HS
NH,
H,N
COO-
COO
Tyrosine
(Tyr, Y)
Lysine
(Lys, K)
NH,+
NH,+
HO
Transcribed Image Text:H,N. COO COO Asparagine (Asn, N) HO Serine NH,+ NH,+ (Ser, S) OH COO COO Glutamine Threonine H,N (Gln, Q) NH, (Thr, T) ÑH,+ Acidic Side Chains Basic Side Chains COO NH, Aspartic acid (Asp, D) Arginine (Arg, R) COO- NH,+ H,N NH,+ COO Glutamic acid (Glu, E) COO NH,* COO Histidine NH,+ (His, H) Cysteine (Cys, C) HS NH, H,N COO- COO Tyrosine (Tyr, Y) Lysine (Lys, K) NH,+ NH,+ HO
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