| Bioinformatics Toolbox | ![]() |
Display amino acid codes, integers, abbreviations, names, and codons
aminolookup
aminolookup(SeqAA)
aminolookup('Code', CodeValue)
aminolookup('Integer', IntegerValue)
aminolookup('Abbreviation', AbbreviationValue)
aminolookup('Name', NameValue)
SeqAA | Amino acid sequence. Enter a character string of single-letter codes or three-letter abbreviations from the Amino Acid Lookup Table below. |
Code | Amino acid single-letter code. Enter a single character from the Amino Acid Lookup Table below. |
Abbreviation | Amino acid three-letter abbreviation. Enter a three-letter abbreviation from the Amino Acid Lookup Table below. |
Name | Amino acid name. Enter an amino acid name from the Amino Acid Lookup Table below. |
Amino Acid Lookup Table
| Code | Integer | Abbreviation | Name | Codons |
|---|---|---|---|---|
A | 1 | Ala | Alanine | GCU GCC GCA GCG |
R | 2 | Arg | Arginine | CGU CGC CGA CGG AGA AGG |
N | 3 | Asn | Asparagine | AAU AAC |
D | 4 | Asp | Aspartic acid (Aspartate) | GAU GAC |
C | 5 | Cys | Cysteine | UGU UGC |
Q | 6 | Gln | Glutamine | CAA CAG |
E | 7 | Glu | Glutamic acid (Glutamate) | GAA GAG |
G | 8 | Gly | Glycine | GGU GGC GGA GGG |
H | 9 | His | Histidine | CAU CAC |
I | 10 | Ile | Isoleucine | AUU AUC AUA |
L | 11 | Leu | Leucine | UUA UUG CUU CUC CUA CUG |
K | 12 | Lys | Lysine | AAA AAG |
M | 13 | Met | Methionine | AUG |
F | 14 | Phe | Phenylalanine | UUU UUC |
P | 15 | Pro | Proline | CCU CCC CCA CCG |
S | 16 | Ser | Serine | UCU UCC UCA UCG AGU AGC |
T | 17 | Thr | Threonine | ACU ACC ACA ACG |
W | 18 | Trp | Tryptophan | UGG |
Y | 19 | Tyr | Tyrosine | UAU UAC |
V | 20 | Val | Valine | GUU GUC GUA GUG |
B | 21 | Asx | Aspartic acid or Asparagine | AAU AAC GAU GAC |
Z | 22 | Glx | Glutamic acid or Glutamine | CAA CAG GAA GAG |
X | 23 | Xaa | Any amino acid | All codons |
* | 24 | END | Termination (translation stop) | UAA UAG UGA |
- | 25 | GAP | Gap of unknown length | - - - |
? | 0 | ??? | Unknown amino acid |
aminolookup displays a table of amino acid codes, integers, abbreviations, names, and codons.
aminolookup(SeqAA) converts between amino acid three-letter abbreviations and one-letter codes. If the input is a character string of three-letter abbreviations, then the output is a character string with the corresponding one-letter codes. If the input is a character string of single-letter codes, then the output is a character string of three-letter codes.
If you enter one of the ambiguous characters B, Z, X, this function displays the abbreviation for the ambiguous amino acid character.
aminolookup('abc')
ans=AlaAsxCys
aminolookup('Code', CodeValue) displays the corresponding amino acid three-letter abbreviation and name.
aminolookup('Integer', IntegerValue) displays the corresponding amino acid single-letter code and name.
aminolookup('Abbreviation', AbbreviationValue) displays the corresponding amino acid single-letter code and name.
aminolookup('Name', NameValue) displays the corresponding single-letter amino acid code and three-letter abbreviation.
Display the single-letter code and three-letter abbreviation for proline.
aminolookup('Name','proline')
ans =
P Pro
Convert a single-letter amino acid sequence to a three-letter sequence.
aminolookup('MWKQAEDIRDIYDF')
ans =
MetTrpLysGlnAlaGluAspIleArgAspIleTyrAspPhe
Convert a three-letter amino acid sequence to a single-letter sequence.
aminolookup('MetTrpLysGlnAlaGluAspIleArgAspIleTyrAspPhe')
ans =
MWKQAEDIRDIYDF
Display the single-letter code, three-letter abbreviation, and name for an integer.
aminolookup('integer', 1)
ans =
A Ala Alanine
Bioinformatics Toolbox functions aa2int, aacount, geneticcode, int2aa, nt2aa, revgeneticcode
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