Amino Acids
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Physiological pH
Ala-A alanine
Arg-R arginine
+
Asn-N asparagine
Asp-D aspartic acid
-
Cys-C cysteine
Glu-E glutamic acid
-
Gln-Q glutamine
Gly-G glycine
His-H histidine
Ile-I
isoleucine
Leu-L leucine
Lys-K lysine
+
Met-M methionine
Phe-F phenylalanine
Pro-P proline
Ser-S serine
Thr-T threonine
Trp-W tryptophan
Tyr-Y tyrosine
Val-V valine
Sec-U selenocysteine
-
Tripeptides
Ala-Ala-Ala
Ala-Ser-Glu
Phe-Thr-Tyr
Trp-Arg-His
Ser-Thr-Pro
Gly-His-Lys
Pro-Val-Lys
Miniproteins
Trp-cage
1l2y
Affibody
2b89
Adnectin
4s0s
Cystine-dense
6aty
Crambin
1cbn
β-hairpin
5awl
Green Fluorescent
1gfl
Fibronectin
1fnf
Metal complexes
tris(glycinato) Co(III)
bis(glycinato) Pt(II)
tris(alaninato) Co(III)
bis(alaninato)diaquo Ni(II)
Electrostatic Potential Key
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Polymer:
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Color:
Amino Acid
Rainbow
Chain
CPK
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Antialias (slower)
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Molecules modified from
PubChem
and
Protein Data Bank
.
This page created by George Lisensky, Beloit College.
Last modified December 3, 2025.
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