Amino acid dipepetide frequency for Vibrio mytili

Apart from single amino acid frequencies one can also calculate so called amino acid dipeptide frequency.

There is 400 possibilites (441 if we consider Xaa as additional 21st amino acid representing all non-standard or unknown amino acids). Thus, if the dipeptides would be present randomly in proteins each amino acid dipeptide should be present with 0.25% frequency. As it is not the case in the nature, for better visablity all more than expected dipepetides are marked by red, and those which are underrepresented are marked by blue in the table.

All values are presented as per milles (‰), therefore need to be multiplied by 10-3.

For more information see sequence space article on Wikipedia.

AlaCysAspGluPheGlyHisIleLysLeuMetAsnProGlnArgSerThrValTrpTyrXaa
Ala
7.264AlaAla: 7.264 ± 0.107
0.993AlaCys: 0.993 ± 0.031
4.41AlaAsp: 4.41 ± 0.079
5.585AlaGlu: 5.585 ± 0.086
3.347AlaPhe: 3.347 ± 0.064
5.747AlaGly: 5.747 ± 0.08
1.712AlaHis: 1.712 ± 0.045
5.723AlaIle: 5.723 ± 0.073
4.983AlaLys: 4.983 ± 0.076
9.523AlaLeu: 9.523 ± 0.117
2.704AlaMet: 2.704 ± 0.058
3.445AlaAsn: 3.445 ± 0.059
2.752AlaPro: 2.752 ± 0.046
3.713AlaGln: 3.713 ± 0.063
3.599AlaArg: 3.599 ± 0.062
5.196AlaSer: 5.196 ± 0.076
4.43AlaThr: 4.43 ± 0.067
5.784AlaVal: 5.784 ± 0.074
1.0AlaTrp: 1.0 ± 0.035
2.347AlaTyr: 2.347 ± 0.058
0.0AlaXaa: 0.0 ± 0.0
Cys
0.827CysAla: 0.827 ± 0.027
0.177CysCys: 0.177 ± 0.014
0.656CysAsp: 0.656 ± 0.024
0.694CysGlu: 0.694 ± 0.028
0.478CysPhe: 0.478 ± 0.022
0.994CysGly: 0.994 ± 0.037
0.358CysHis: 0.358 ± 0.021
0.614CysIle: 0.614 ± 0.024
0.471CysLys: 0.471 ± 0.024
0.989CysLeu: 0.989 ± 0.029
0.251CysMet: 0.251 ± 0.017
0.377CysAsn: 0.377 ± 0.022
0.483CysPro: 0.483 ± 0.022
0.494CysGln: 0.494 ± 0.023
0.489CysArg: 0.489 ± 0.023
0.737CysSer: 0.737 ± 0.029
0.517CysThr: 0.517 ± 0.023
0.737CysVal: 0.737 ± 0.03
0.151CysTrp: 0.151 ± 0.013
0.331CysTyr: 0.331 ± 0.019
0.0CysXaa: 0.0 ± 0.0
Asp
4.483AspAla: 4.483 ± 0.07
0.571AspCys: 0.571 ± 0.023
3.133AspAsp: 3.133 ± 0.065
4.014AspGlu: 4.014 ± 0.06
2.494AspPhe: 2.494 ± 0.047
3.779AspGly: 3.779 ± 0.072
1.106AspHis: 1.106 ± 0.035
4.163AspIle: 4.163 ± 0.058
3.269AspLys: 3.269 ± 0.065
5.294AspLeu: 5.294 ± 0.077
1.483AspMet: 1.483 ± 0.038
2.345AspAsn: 2.345 ± 0.053
2.013AspPro: 2.013 ± 0.046
1.997AspGln: 1.997 ± 0.038
2.293AspArg: 2.293 ± 0.045
3.28AspSer: 3.28 ± 0.062
2.656AspThr: 2.656 ± 0.052
4.192AspVal: 4.192 ± 0.066
0.907AspTrp: 0.907 ± 0.032
2.015AspTyr: 2.015 ± 0.043
0.0AspXaa: 0.0 ± 0.0
Glu
5.195GluAla: 5.195 ± 0.085
0.605GluCys: 0.605 ± 0.025
3.004GluAsp: 3.004 ± 0.053
4.264GluGlu: 4.264 ± 0.07
2.564GluPhe: 2.564 ± 0.05
3.644GluGly: 3.644 ± 0.061
1.742GluHis: 1.742 ± 0.05
3.811GluIle: 3.811 ± 0.063
4.094GluLys: 4.094 ± 0.067
7.279GluLeu: 7.279 ± 0.101
1.816GluMet: 1.816 ± 0.045
2.82GluAsn: 2.82 ± 0.05
2.151GluPro: 2.151 ± 0.05
3.995GluGln: 3.995 ± 0.071
3.585GluArg: 3.585 ± 0.064
3.889GluSer: 3.889 ± 0.061
3.234GluThr: 3.234 ± 0.052
4.49GluVal: 4.49 ± 0.07
0.9GluTrp: 0.9 ± 0.031
1.902GluTyr: 1.902 ± 0.048
0.0GluXaa: 0.0 ± 0.0
Phe
3.571PheAla: 3.571 ± 0.055
0.53PheCys: 0.53 ± 0.023
2.798PheAsp: 2.798 ± 0.051
2.569PheGlu: 2.569 ± 0.044
1.736PhePhe: 1.736 ± 0.054
3.279PheGly: 3.279 ± 0.065
0.887PheHis: 0.887 ± 0.031
2.696PheIle: 2.696 ± 0.059
2.034PheLys: 2.034 ± 0.048
3.389PheLeu: 3.389 ± 0.06
1.038PheMet: 1.038 ± 0.036
1.953PheAsn: 1.953 ± 0.045
1.483PhePro: 1.483 ± 0.041
1.241PheGln: 1.241 ± 0.033
1.536PheArg: 1.536 ± 0.04
3.205PheSer: 3.205 ± 0.061
2.356PheThr: 2.356 ± 0.053
2.993PheVal: 2.993 ± 0.057
0.542PheTrp: 0.542 ± 0.021
1.321PheTyr: 1.321 ± 0.04
0.0PheXaa: 0.0 ± 0.0
Gly
5.276GlyAla: 5.276 ± 0.081
0.935GlyCys: 0.935 ± 0.031
3.638GlyAsp: 3.638 ± 0.064
4.46GlyGlu: 4.46 ± 0.062
3.317GlyPhe: 3.317 ± 0.059
4.788GlyGly: 4.788 ± 0.077
1.613GlyHis: 1.613 ± 0.042
4.752GlyIle: 4.752 ± 0.083
4.06GlyLys: 4.06 ± 0.065
6.908GlyLeu: 6.908 ± 0.081
2.027GlyMet: 2.027 ± 0.05
2.66GlyAsn: 2.66 ± 0.057
1.645GlyPro: 1.645 ± 0.039
2.778GlyGln: 2.778 ± 0.054
3.071GlyArg: 3.071 ± 0.053
4.084GlySer: 4.084 ± 0.061
3.418GlyThr: 3.418 ± 0.061
5.23GlyVal: 5.23 ± 0.075
1.001GlyTrp: 1.001 ± 0.03
2.567GlyTyr: 2.567 ± 0.055
0.0GlyXaa: 0.0 ± 0.0
His
1.683HisAla: 1.683 ± 0.04
0.342HisCys: 0.342 ± 0.02
1.164HisAsp: 1.164 ± 0.038
1.187HisGlu: 1.187 ± 0.033
1.074HisPhe: 1.074 ± 0.034
1.577HisGly: 1.577 ± 0.041
0.751HisHis: 0.751 ± 0.034
1.434HisIle: 1.434 ± 0.035
1.11HisLys: 1.11 ± 0.035
2.324HisLeu: 2.324 ± 0.044
0.544HisMet: 0.544 ± 0.025
0.939HisAsn: 0.939 ± 0.031
1.189HisPro: 1.189 ± 0.034
1.226HisGln: 1.226 ± 0.034
1.085HisArg: 1.085 ± 0.032
1.453HisSer: 1.453 ± 0.036
1.135HisThr: 1.135 ± 0.032
1.376HisVal: 1.376 ± 0.039
0.368HisTrp: 0.368 ± 0.02
0.899HisTyr: 0.899 ± 0.027
0.0HisXaa: 0.0 ± 0.0
Ile
6.283IleAla: 6.283 ± 0.08
0.734IleCys: 0.734 ± 0.026
4.204IleAsp: 4.204 ± 0.065
4.865IleGlu: 4.865 ± 0.075
2.221IlePhe: 2.221 ± 0.05
4.677IleGly: 4.677 ± 0.071
1.32IleHis: 1.32 ± 0.033
3.524IleIle: 3.524 ± 0.069
3.333IleLys: 3.333 ± 0.059
5.342IleLeu: 5.342 ± 0.082
1.332IleMet: 1.332 ± 0.034
2.843IleAsn: 2.843 ± 0.052
2.67IlePro: 2.67 ± 0.049
2.42IleGln: 2.42 ± 0.048
2.796IleArg: 2.796 ± 0.049
4.322IleSer: 4.322 ± 0.059
3.562IleThr: 3.562 ± 0.06
4.305IleVal: 4.305 ± 0.071
0.665IleTrp: 0.665 ± 0.025
1.751IleTyr: 1.751 ± 0.043
0.0IleXaa: 0.0 ± 0.0
Lys
4.813LysAla: 4.813 ± 0.066
0.39LysCys: 0.39 ± 0.022
2.865LysAsp: 2.865 ± 0.058
3.574LysGlu: 3.574 ± 0.062
1.579LysPhe: 1.579 ± 0.04
3.517LysGly: 3.517 ± 0.063
1.439LysHis: 1.439 ± 0.035
2.81LysIle: 2.81 ± 0.062
3.106LysLys: 3.106 ± 0.064
5.59LysLeu: 5.59 ± 0.076
1.557LysMet: 1.557 ± 0.039
2.223LysAsn: 2.223 ± 0.045
2.527LysPro: 2.527 ± 0.046
3.079LysGln: 3.079 ± 0.059
2.89LysArg: 2.89 ± 0.054
3.248LysSer: 3.248 ± 0.058
2.951LysThr: 2.951 ± 0.057
4.074LysVal: 4.074 ± 0.057
0.608LysTrp: 0.608 ± 0.021
1.502LysTyr: 1.502 ± 0.034
0.0LysXaa: 0.0 ± 0.0
Leu
9.492LeuAla: 9.492 ± 0.102
1.12LeuCys: 1.12 ± 0.037
5.773LeuAsp: 5.773 ± 0.075
6.446LeuGlu: 6.446 ± 0.08
4.179LeuPhe: 4.179 ± 0.076
6.906LeuGly: 6.906 ± 0.092
2.069LeuHis: 2.069 ± 0.043
6.216LeuIle: 6.216 ± 0.083
5.402LeuLys: 5.402 ± 0.086
10.122LeuLeu: 10.122 ± 0.112
2.791LeuMet: 2.791 ± 0.049
4.637LeuAsn: 4.637 ± 0.066
4.661LeuPro: 4.661 ± 0.068
3.477LeuGln: 3.477 ± 0.061
4.367LeuArg: 4.367 ± 0.071
7.9LeuSer: 7.9 ± 0.09
5.974LeuThr: 5.974 ± 0.071
6.999LeuVal: 6.999 ± 0.084
1.004LeuTrp: 1.004 ± 0.033
2.591LeuTyr: 2.591 ± 0.049
0.0LeuXaa: 0.0 ± 0.0
Met
2.54MetAla: 2.54 ± 0.052
0.241MetCys: 0.241 ± 0.014
1.318MetAsp: 1.318 ± 0.039
1.438MetGlu: 1.438 ± 0.038
1.057MetPhe: 1.057 ± 0.036
1.841MetGly: 1.841 ± 0.042
0.483MetHis: 0.483 ± 0.022
1.566MetIle: 1.566 ± 0.036
1.669MetLys: 1.669 ± 0.037
2.813MetLeu: 2.813 ± 0.061
0.864MetMet: 0.864 ± 0.031
1.217MetAsn: 1.217 ± 0.036
1.218MetPro: 1.218 ± 0.038
1.119MetGln: 1.119 ± 0.034
1.229MetArg: 1.229 ± 0.034
2.118MetSer: 2.118 ± 0.042
1.697MetThr: 1.697 ± 0.037
1.911MetVal: 1.911 ± 0.044
0.247MetTrp: 0.247 ± 0.017
0.586MetTyr: 0.586 ± 0.024
0.0MetXaa: 0.0 ± 0.0
Asn
3.403AsnAla: 3.403 ± 0.064
0.421AsnCys: 0.421 ± 0.018
2.339AsnAsp: 2.339 ± 0.047
2.554AsnGlu: 2.554 ± 0.048
1.602AsnPhe: 1.602 ± 0.043
2.982AsnGly: 2.982 ± 0.055
1.019AsnHis: 1.019 ± 0.032
2.746AsnIle: 2.746 ± 0.053
2.287AsnLys: 2.287 ± 0.055
3.889AsnLeu: 3.889 ± 0.058
1.072AsnMet: 1.072 ± 0.034
1.93AsnAsn: 1.93 ± 0.043
2.107AsnPro: 2.107 ± 0.044
2.149AsnGln: 2.149 ± 0.05
1.954AsnArg: 1.954 ± 0.04
2.525AsnSer: 2.525 ± 0.053
2.279AsnThr: 2.279 ± 0.051
2.982AsnVal: 2.982 ± 0.055
0.62AsnTrp: 0.62 ± 0.026
1.345AsnTyr: 1.345 ± 0.037
0.0AsnXaa: 0.0 ± 0.0
Pro
2.914ProAla: 2.914 ± 0.061
0.344ProCys: 0.344 ± 0.017
2.268ProAsp: 2.268 ± 0.045
3.262ProGlu: 3.262 ± 0.056
1.717ProPhe: 1.717 ± 0.044
2.215ProGly: 2.215 ± 0.046
0.883ProHis: 0.883 ± 0.033
2.566ProIle: 2.566 ± 0.053
2.091ProLys: 2.091 ± 0.043
3.911ProLeu: 3.911 ± 0.075
1.123ProMet: 1.123 ± 0.033
1.777ProAsn: 1.777 ± 0.049
1.125ProPro: 1.125 ± 0.037
1.679ProGln: 1.679 ± 0.04
1.376ProArg: 1.376 ± 0.034
2.527ProSer: 2.527 ± 0.051
2.24ProThr: 2.24 ± 0.047
3.103ProVal: 3.103 ± 0.061
0.514ProTrp: 0.514 ± 0.02
1.275ProTyr: 1.275 ± 0.036
0.0ProXaa: 0.0 ± 0.0
Gln
4.125GlnAla: 4.125 ± 0.073
0.436GlnCys: 0.436 ± 0.024
2.144GlnAsp: 2.144 ± 0.047
2.547GlnGlu: 2.547 ± 0.044
1.731GlnPhe: 1.731 ± 0.045
2.927GlnGly: 2.927 ± 0.056
1.16GlnHis: 1.16 ± 0.036
2.551GlnIle: 2.551 ± 0.047
2.192GlnLys: 2.192 ± 0.052
4.906GlnLeu: 4.906 ± 0.082
1.188GlnMet: 1.188 ± 0.032
1.614GlnAsn: 1.614 ± 0.04
1.713GlnPro: 1.713 ± 0.037
2.815GlnGln: 2.815 ± 0.08
2.371GlnArg: 2.371 ± 0.057
2.853GlnSer: 2.853 ± 0.064
2.29GlnThr: 2.29 ± 0.049
3.183GlnVal: 3.183 ± 0.062
0.657GlnTrp: 0.657 ± 0.024
1.411GlnTyr: 1.411 ± 0.038
0.0GlnXaa: 0.0 ± 0.0
Arg
3.375ArgAla: 3.375 ± 0.064
0.512ArgCys: 0.512 ± 0.022
2.558ArgAsp: 2.558 ± 0.055
3.159ArgGlu: 3.159 ± 0.054
2.166ArgPhe: 2.166 ± 0.046
2.633ArgGly: 2.633 ± 0.051
1.123ArgHis: 1.123 ± 0.032
3.017ArgIle: 3.017 ± 0.056
2.48ArgLys: 2.48 ± 0.055
4.813ArgLeu: 4.813 ± 0.065
1.212ArgMet: 1.212 ± 0.034
1.915ArgAsn: 1.915 ± 0.046
1.579ArgPro: 1.579 ± 0.033
2.132ArgGln: 2.132 ± 0.048
2.379ArgArg: 2.379 ± 0.054
2.681ArgSer: 2.681 ± 0.052
2.214ArgThr: 2.214 ± 0.047
3.254ArgVal: 3.254 ± 0.052
0.622ArgTrp: 0.622 ± 0.028
1.779ArgTyr: 1.779 ± 0.041
0.0ArgXaa: 0.0 ± 0.0
Ser
5.301SerAla: 5.301 ± 0.073
0.63SerCys: 0.63 ± 0.026
3.688SerAsp: 3.688 ± 0.062
4.161SerGlu: 4.161 ± 0.067
2.782SerPhe: 2.782 ± 0.054
4.961SerGly: 4.961 ± 0.082
1.505SerHis: 1.505 ± 0.039
4.272SerIle: 4.272 ± 0.065
3.319SerLys: 3.319 ± 0.056
6.833SerLeu: 6.833 ± 0.09
1.754SerMet: 1.754 ± 0.04
2.705SerAsn: 2.705 ± 0.058
2.465SerPro: 2.465 ± 0.049
2.886SerGln: 2.886 ± 0.06
2.946SerArg: 2.946 ± 0.055
4.415SerSer: 4.415 ± 0.078
3.362SerThr: 3.362 ± 0.063
4.693SerVal: 4.693 ± 0.066
0.843SerTrp: 0.843 ± 0.03
2.021SerTyr: 2.021 ± 0.041
0.0SerXaa: 0.0 ± 0.0
Thr
4.297ThrAla: 4.297 ± 0.067
0.466ThrCys: 0.466 ± 0.023
2.821ThrAsp: 2.821 ± 0.056
3.143ThrGlu: 3.143 ± 0.053
2.155ThrPhe: 2.155 ± 0.049
4.029ThrGly: 4.029 ± 0.066
1.229ThrHis: 1.229 ± 0.033
3.424ThrIle: 3.424 ± 0.057
2.58ThrLys: 2.58 ± 0.048
6.261ThrLeu: 6.261 ± 0.086
1.296ThrMet: 1.296 ± 0.037
2.129ThrAsn: 2.129 ± 0.047
2.524ThrPro: 2.524 ± 0.049
2.461ThrGln: 2.461 ± 0.054
2.211ThrArg: 2.211 ± 0.044
3.407ThrSer: 3.407 ± 0.065
2.842ThrThr: 2.842 ± 0.056
3.898ThrVal: 3.898 ± 0.067
0.628ThrTrp: 0.628 ± 0.024
1.493ThrTyr: 1.493 ± 0.039
0.0ThrXaa: 0.0 ± 0.0
Val
6.308ValAla: 6.308 ± 0.093
0.819ValCys: 0.819 ± 0.029
4.322ValAsp: 4.322 ± 0.067
4.808ValGlu: 4.808 ± 0.077
2.966ValPhe: 2.966 ± 0.066
4.802ValGly: 4.802 ± 0.073
1.327ValHis: 1.327 ± 0.036
4.893ValIle: 4.893 ± 0.077
3.819ValLys: 3.819 ± 0.062
6.92ValLeu: 6.92 ± 0.081
2.044ValMet: 2.044 ± 0.046
3.05ValAsn: 3.05 ± 0.063
2.78ValPro: 2.78 ± 0.053
2.393ValGln: 2.393 ± 0.052
3.054ValArg: 3.054 ± 0.056
4.918ValSer: 4.918 ± 0.073
4.113ValThr: 4.113 ± 0.056
5.746ValVal: 5.746 ± 0.071
0.796ValTrp: 0.796 ± 0.026
1.883ValTyr: 1.883 ± 0.042
0.0ValXaa: 0.0 ± 0.0
Trp
0.873TrpAla: 0.873 ± 0.027
0.174TrpCys: 0.174 ± 0.012
0.642TrpAsp: 0.642 ± 0.027
0.632TrpGlu: 0.632 ± 0.023
0.617TrpPhe: 0.617 ± 0.028
0.839TrpGly: 0.839 ± 0.031
0.342TrpHis: 0.342 ± 0.02
0.717TrpIle: 0.717 ± 0.026
0.616TrpLys: 0.616 ± 0.024
1.716TrpLeu: 1.716 ± 0.042
0.39TrpMet: 0.39 ± 0.015
0.505TrpAsn: 0.505 ± 0.023
0.431TrpPro: 0.431 ± 0.021
0.891TrpGln: 0.891 ± 0.03
0.663TrpArg: 0.663 ± 0.022
0.756TrpSer: 0.756 ± 0.028
0.492TrpThr: 0.492 ± 0.024
0.91TrpVal: 0.91 ± 0.031
0.215TrpTrp: 0.215 ± 0.013
0.374TrpTyr: 0.374 ± 0.021
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.234TyrAla: 2.234 ± 0.049
0.385TyrCys: 0.385 ± 0.018
1.742TyrAsp: 1.742 ± 0.039
1.62TyrGlu: 1.62 ± 0.037
1.375TyrPhe: 1.375 ± 0.035
2.092TyrGly: 2.092 ± 0.046
0.793TyrHis: 0.793 ± 0.027
1.675TyrIle: 1.675 ± 0.038
1.425TyrLys: 1.425 ± 0.035
3.305TyrLeu: 3.305 ± 0.057
0.685TyrMet: 0.685 ± 0.026
1.121TyrAsn: 1.121 ± 0.035
1.395TyrPro: 1.395 ± 0.033
1.869TyrGln: 1.869 ± 0.043
1.709TyrArg: 1.709 ± 0.04
2.029TyrSer: 2.029 ± 0.053
1.532TyrThr: 1.532 ± 0.039
1.901TyrVal: 1.901 ± 0.047
0.508TyrTrp: 0.508 ± 0.023
1.076TyrTyr: 1.076 ± 0.038
0.0TyrXaa: 0.0 ± 0.0
Xaa
0.0XaaAla: 0.0 ± 0.0
0.0XaaCys: 0.0 ± 0.0
0.0XaaAsp: 0.0 ± 0.0
0.0XaaGlu: 0.0 ± 0.0
0.0XaaPhe: 0.0 ± 0.0
0.0XaaGly: 0.0 ± 0.0
0.0XaaHis: 0.0 ± 0.0
0.0XaaIle: 0.0 ± 0.0
0.0XaaLys: 0.0 ± 0.0
0.0XaaLeu: 0.0 ± 0.0
0.0XaaMet: 0.0 ± 0.0
0.0XaaAsn: 0.0 ± 0.0
0.0XaaPro: 0.0 ± 0.0
0.0XaaGln: 0.0 ± 0.0
0.0XaaArg: 0.0 ± 0.0
0.0XaaSer: 0.0 ± 0.0
0.0XaaThr: 0.0 ± 0.0
0.0XaaVal: 0.0 ± 0.0
0.0XaaTrp: 0.0 ± 0.0
0.0XaaTyr: 0.0 ± 0.0
0.0XaaXaa: 0.0 ± 0.0
Statistics based on 3541 proteins (1062854 amino acids)

Note: The error has been estimated with the bootstraping (x100) at the protein level

Above dipeptide statistics (among other stats for this proteome) you can download from this CSV file
See this proteome in: uniprot_link
Proteome-pI is available under Creative Commons Attribution-NoDerivs license, for more details see here

Reference: Kozlowski LP. Proteome-pI 2.0: Proteome Isoelectric Point Database Update. Nucleic Acids Res. 2021, doi: 10.1093/nar/gkab944 Contact: Lukasz P. Kozlowski