Amino acid symbols

From TheGPMWiki

(Difference between revisions)

Latest revision as of 20:14, 25 February 2019

The following table contains a list of the amino acid 1 and 3 letter codes.

Amino Acid	3-Letter	1-Letter	Residue mass (A0, u)
Alanine	Ala	A	71.037114
Arginine	Arg	R	156.101111
Asparagine	Asn	N	114.042927
Aspartic acid	Asp	D	115.026943
Cysteine	Cys	C	103.009185
Glutamic acid	Glu	E	129.042593
Glutamine	Gln	Q	128.058578
Glycine	Gly	G	57.021464
Histidine	His	H	137.058912
Isoleucine	Ile	I	113.084064
Leucine	Leu	L	113.084064
Lysine	Lys	K	128.094963
Methionine	Met	M	131.040485
Phenylalanine	Phe	F	147.068414
Proline	Pro	P	97.052764
Serine	Ser	S	87.032028
Threonine	Thr	T	101.047679
Tryptophan	Trp	W	186.079313
Tyrosine	Tyr	Y	163.06332
Valine	Val	V	99.068414

Additional codes for amino acids coded by unusual translations:

Amino acid	3-Letter	1-Letter	Residue mass (A0, u)
Selenocysteine	Sec	U	150.95363
Pyrrolysine	Pyl	O	237.147727
stop	n/a	*	n/a

Additional codes for ambiguous residues in protein sequences:

Ambiguous Amino Acids	3-Letter	1-Letter	X! translation
Asparagine or aspartic acid	Asx	B	N
Glutamine or glutamic acid	Glx	Z	Q
Leucine or Isoleucine	Xle	J	L
Unspecified or unknown amino acid	Xaa	X	*

@@ Line 5: / Line 5: @@
 ! 3-Letter
 ! 1-Letter
-! Residue mass (A0, Da)
+! Residue mass (A0, u)
 |- align="center"
 | [http://en.wikipedia.org/wiki/Alanine Alanine]
@@ Line 114: / Line 114: @@
 ! 3-Letter
 ! 1-Letter
-! Residue mass (A0, Da)
+! Residue mass (A0, u)
 |- align="center"
 | [http://en.wikipedia.org/wiki/Selenocysteine Selenocysteine]
@@ Line 143: / Line 143: @@
 | Asx
 | B
-| D
+| N
 |- align="center"
 | Glutamine or glutamic acid
 | Glx
 | Z
-| E
+| Q
 |- align="center"
 | Leucine or Isoleucine