Amino acid dipepetide frequency for Clostridium sp. CAG:793

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
2.973AlaAla: 2.973 ± 0.134
0.602AlaCys: 0.602 ± 0.041
3.019AlaAsp: 3.019 ± 0.101
3.953AlaGlu: 3.953 ± 0.119
1.948AlaPhe: 1.948 ± 0.081
3.733AlaGly: 3.733 ± 0.156
0.727AlaHis: 0.727 ± 0.045
5.953AlaIle: 5.953 ± 0.153
5.376AlaLys: 5.376 ± 0.138
4.223AlaLeu: 4.223 ± 0.122
1.439AlaMet: 1.439 ± 0.061
3.321AlaAsn: 3.321 ± 0.099
1.398AlaPro: 1.398 ± 0.094
1.82AlaGln: 1.82 ± 0.089
2.3AlaArg: 2.3 ± 0.087
3.052AlaSer: 3.052 ± 0.118
3.338AlaThr: 3.338 ± 0.138
3.539AlaVal: 3.539 ± 0.102
0.406AlaTrp: 0.406 ± 0.053
2.093AlaTyr: 2.093 ± 0.08
0.0AlaXaa: 0.0 ± 0.0
Cys
0.58CysAla: 0.58 ± 0.041
0.153CysCys: 0.153 ± 0.024
0.638CysAsp: 0.638 ± 0.042
0.638CysGlu: 0.638 ± 0.037
0.428CysPhe: 0.428 ± 0.037
0.929CysGly: 0.929 ± 0.05
0.204CysHis: 0.204 ± 0.024
1.133CysIle: 1.133 ± 0.062
1.112CysLys: 1.112 ± 0.058
0.853CysLeu: 0.853 ± 0.059
0.311CysMet: 0.311 ± 0.03
0.733CysAsn: 0.733 ± 0.05
0.417CysPro: 0.417 ± 0.035
0.27CysGln: 0.27 ± 0.028
0.362CysArg: 0.362 ± 0.035
0.698CysSer: 0.698 ± 0.048
0.64CysThr: 0.64 ± 0.034
0.668CysVal: 0.668 ± 0.045
0.068CysTrp: 0.068 ± 0.017
0.436CysTyr: 0.436 ± 0.045
0.0CysXaa: 0.0 ± 0.0
Asp
2.866AspAla: 2.866 ± 0.087
0.632AspCys: 0.632 ± 0.049
3.321AspAsp: 3.321 ± 0.121
5.378AspGlu: 5.378 ± 0.139
2.509AspPhe: 2.509 ± 0.094
3.58AspGly: 3.58 ± 0.105
0.542AspHis: 0.542 ± 0.043
6.12AspIle: 6.12 ± 0.139
5.496AspLys: 5.496 ± 0.144
4.338AspLeu: 4.338 ± 0.129
1.561AspMet: 1.561 ± 0.07
4.005AspAsn: 4.005 ± 0.125
1.368AspPro: 1.368 ± 0.068
1.098AspGln: 1.098 ± 0.057
1.823AspArg: 1.823 ± 0.064
3.354AspSer: 3.354 ± 0.096
2.997AspThr: 2.997 ± 0.101
3.926AspVal: 3.926 ± 0.116
0.305AspTrp: 0.305 ± 0.03
2.749AspTyr: 2.749 ± 0.099
0.0AspXaa: 0.0 ± 0.0
Glu
3.779GluAla: 3.779 ± 0.129
0.725GluCys: 0.725 ± 0.049
4.24GluAsp: 4.24 ± 0.122
6.711GluGlu: 6.711 ± 0.195
2.825GluPhe: 2.825 ± 0.106
3.507GluGly: 3.507 ± 0.122
0.937GluHis: 0.937 ± 0.052
7.921GluIle: 7.921 ± 0.178
8.888GluLys: 8.888 ± 0.229
6.602GluLeu: 6.602 ± 0.146
2.076GluMet: 2.076 ± 0.077
6.31GluAsn: 6.31 ± 0.164
1.499GluPro: 1.499 ± 0.072
2.539GluGln: 2.539 ± 0.111
2.654GluArg: 2.654 ± 0.11
3.793GluSer: 3.793 ± 0.118
3.678GluThr: 3.678 ± 0.101
4.079GluVal: 4.079 ± 0.133
0.482GluTrp: 0.482 ± 0.041
3.695GluTyr: 3.695 ± 0.112
0.0GluXaa: 0.0 ± 0.0
Phe
2.202PheAla: 2.202 ± 0.086
0.526PheCys: 0.526 ± 0.038
2.558PheAsp: 2.558 ± 0.079
2.711PheGlu: 2.711 ± 0.091
1.349PhePhe: 1.349 ± 0.069
2.286PheGly: 2.286 ± 0.091
0.433PheHis: 0.433 ± 0.038
3.556PheIle: 3.556 ± 0.135
3.098PheLys: 3.098 ± 0.093
3.008PheLeu: 3.008 ± 0.112
0.965PheMet: 0.965 ± 0.063
2.349PheAsn: 2.349 ± 0.099
0.981PhePro: 0.981 ± 0.057
0.703PheGln: 0.703 ± 0.046
1.242PheArg: 1.242 ± 0.067
2.43PheSer: 2.43 ± 0.089
1.997PheThr: 1.997 ± 0.069
2.406PheVal: 2.406 ± 0.091
0.278PheTrp: 0.278 ± 0.027
1.616PheTyr: 1.616 ± 0.074
0.0PheXaa: 0.0 ± 0.0
Gly
3.46GlyAla: 3.46 ± 0.127
0.659GlyCys: 0.659 ± 0.053
2.883GlyAsp: 2.883 ± 0.099
3.771GlyGlu: 3.771 ± 0.104
2.319GlyPhe: 2.319 ± 0.087
3.201GlyGly: 3.201 ± 0.117
0.902GlyHis: 0.902 ± 0.054
6.256GlyIle: 6.256 ± 0.156
5.983GlyLys: 5.983 ± 0.131
4.319GlyLeu: 4.319 ± 0.111
1.616GlyMet: 1.616 ± 0.076
3.545GlyAsn: 3.545 ± 0.137
0.984GlyPro: 0.984 ± 0.054
1.548GlyGln: 1.548 ± 0.07
2.128GlyArg: 2.128 ± 0.098
3.278GlySer: 3.278 ± 0.171
4.019GlyThr: 4.019 ± 0.226
3.7GlyVal: 3.7 ± 0.113
0.463GlyTrp: 0.463 ± 0.043
2.899GlyTyr: 2.899 ± 0.088
0.0GlyXaa: 0.0 ± 0.0
His
0.695HisAla: 0.695 ± 0.049
0.185HisCys: 0.185 ± 0.025
0.657HisAsp: 0.657 ± 0.045
0.766HisGlu: 0.766 ± 0.054
0.569HisPhe: 0.569 ± 0.042
0.858HisGly: 0.858 ± 0.05
0.234HisHis: 0.234 ± 0.027
1.275HisIle: 1.275 ± 0.06
0.992HisLys: 0.992 ± 0.058
0.997HisLeu: 0.997 ± 0.065
0.251HisMet: 0.251 ± 0.028
0.828HisAsn: 0.828 ± 0.046
0.515HisPro: 0.515 ± 0.045
0.349HisGln: 0.349 ± 0.032
0.42HisArg: 0.42 ± 0.035
0.877HisSer: 0.877 ± 0.057
0.738HisThr: 0.738 ± 0.047
0.706HisVal: 0.706 ± 0.047
0.087HisTrp: 0.087 ± 0.016
0.529HisTyr: 0.529 ± 0.04
0.0HisXaa: 0.0 ± 0.0
Ile
6.373IleAla: 6.373 ± 0.154
1.373IleCys: 1.373 ± 0.071
6.427IleAsp: 6.427 ± 0.15
7.378IleGlu: 7.378 ± 0.185
3.539IlePhe: 3.539 ± 0.114
5.515IleGly: 5.515 ± 0.159
1.272IleHis: 1.272 ± 0.06
10.533IleIle: 10.533 ± 0.309
8.852IleLys: 8.852 ± 0.182
8.253IleLeu: 8.253 ± 0.213
2.289IleMet: 2.289 ± 0.088
6.365IleAsn: 6.365 ± 0.147
3.158IlePro: 3.158 ± 0.095
2.785IleGln: 2.785 ± 0.095
3.264IleArg: 3.264 ± 0.106
7.07IleSer: 7.07 ± 0.155
5.757IleThr: 5.757 ± 0.141
6.196IleVal: 6.196 ± 0.139
0.45IleTrp: 0.45 ± 0.039
4.207IleTyr: 4.207 ± 0.123
0.0IleXaa: 0.0 ± 0.0
Lys
4.989LysAla: 4.989 ± 0.129
0.973LysCys: 0.973 ± 0.056
5.861LysAsp: 5.861 ± 0.132
9.288LysGlu: 9.288 ± 0.212
3.106LysPhe: 3.106 ± 0.093
4.259LysGly: 4.259 ± 0.104
1.065LysHis: 1.065 ± 0.055
9.531LysIle: 9.531 ± 0.199
9.356LysLys: 9.356 ± 0.202
7.852LysLeu: 7.852 ± 0.161
2.749LysMet: 2.749 ± 0.094
6.719LysAsn: 6.719 ± 0.184
2.12LysPro: 2.12 ± 0.079
3.261LysGln: 3.261 ± 0.112
3.286LysArg: 3.286 ± 0.108
5.06LysSer: 5.06 ± 0.129
5.057LysThr: 5.057 ± 0.144
5.88LysVal: 5.88 ± 0.145
0.559LysTrp: 0.559 ± 0.04
4.776LysTyr: 4.776 ± 0.134
0.0LysXaa: 0.0 ± 0.0
Leu
4.782LeuAla: 4.782 ± 0.114
0.973LeuCys: 0.973 ± 0.053
4.703LeuAsp: 4.703 ± 0.129
5.91LeuGlu: 5.91 ± 0.151
2.894LeuPhe: 2.894 ± 0.114
4.798LeuGly: 4.798 ± 0.145
1.033LeuHis: 1.033 ± 0.056
7.34LeuIle: 7.34 ± 0.184
8.1LeuLys: 8.1 ± 0.156
6.419LeuLeu: 6.419 ± 0.194
1.801LeuMet: 1.801 ± 0.076
5.286LeuAsn: 5.286 ± 0.143
2.436LeuPro: 2.436 ± 0.091
2.128LeuGln: 2.128 ± 0.077
2.798LeuArg: 2.798 ± 0.098
5.436LeuSer: 5.436 ± 0.148
4.452LeuThr: 4.452 ± 0.159
4.596LeuVal: 4.596 ± 0.131
0.51LeuTrp: 0.51 ± 0.038
3.155LeuTyr: 3.155 ± 0.103
0.0LeuXaa: 0.0 ± 0.0
Met
1.479MetAla: 1.479 ± 0.074
0.354MetCys: 0.354 ± 0.033
1.384MetAsp: 1.384 ± 0.065
1.727MetGlu: 1.727 ± 0.077
0.886MetPhe: 0.886 ± 0.057
1.351MetGly: 1.351 ± 0.068
0.33MetHis: 0.33 ± 0.03
2.215MetIle: 2.215 ± 0.087
2.722MetLys: 2.722 ± 0.092
2.272MetLeu: 2.272 ± 0.096
0.668MetMet: 0.668 ± 0.046
1.757MetAsn: 1.757 ± 0.073
1.041MetPro: 1.041 ± 0.051
0.989MetGln: 0.989 ± 0.048
0.869MetArg: 0.869 ± 0.054
1.58MetSer: 1.58 ± 0.065
1.343MetThr: 1.343 ± 0.066
1.245MetVal: 1.245 ± 0.068
0.117MetTrp: 0.117 ± 0.017
1.071MetTyr: 1.071 ± 0.051
0.0MetXaa: 0.0 ± 0.0
Asn
3.324AsnAla: 3.324 ± 0.108
0.733AsnCys: 0.733 ± 0.048
3.55AsnAsp: 3.55 ± 0.105
5.147AsnGlu: 5.147 ± 0.133
2.33AsnPhe: 2.33 ± 0.092
4.229AsnGly: 4.229 ± 0.126
0.73AsnHis: 0.73 ± 0.038
7.065AsnIle: 7.065 ± 0.203
6.91AsnLys: 6.91 ± 0.176
5.201AsnLeu: 5.201 ± 0.131
1.667AsnMet: 1.667 ± 0.072
5.237AsnAsn: 5.237 ± 0.195
2.161AsnPro: 2.161 ± 0.088
2.259AsnGln: 2.259 ± 0.083
2.109AsnArg: 2.109 ± 0.077
4.463AsnSer: 4.463 ± 0.135
3.738AsnThr: 3.738 ± 0.146
4.31AsnVal: 4.31 ± 0.123
0.403AsnTrp: 0.403 ± 0.035
2.804AsnTyr: 2.804 ± 0.099
0.0AsnXaa: 0.0 ± 0.0
Pro
1.425ProAla: 1.425 ± 0.065
0.354ProCys: 0.354 ± 0.027
1.714ProAsp: 1.714 ± 0.069
2.501ProGlu: 2.501 ± 0.095
1.041ProPhe: 1.041 ± 0.056
1.479ProGly: 1.479 ± 0.074
0.368ProHis: 0.368 ± 0.034
2.564ProIle: 2.564 ± 0.084
2.114ProLys: 2.114 ± 0.084
1.831ProLeu: 1.831 ± 0.073
0.711ProMet: 0.711 ± 0.048
1.64ProAsn: 1.64 ± 0.08
0.504ProPro: 0.504 ± 0.042
0.826ProGln: 0.826 ± 0.051
0.839ProArg: 0.839 ± 0.048
1.618ProSer: 1.618 ± 0.073
1.763ProThr: 1.763 ± 0.117
1.858ProVal: 1.858 ± 0.083
0.215ProTrp: 0.215 ± 0.024
1.207ProTyr: 1.207 ± 0.063
0.0ProXaa: 0.0 ± 0.0
Gln
1.714GlnAla: 1.714 ± 0.07
0.218GlnCys: 0.218 ± 0.023
1.651GlnAsp: 1.651 ± 0.061
2.567GlnGlu: 2.567 ± 0.084
0.984GlnPhe: 0.984 ± 0.048
1.588GlnGly: 1.588 ± 0.071
0.33GlnHis: 0.33 ± 0.027
3.005GlnIle: 3.005 ± 0.092
2.719GlnLys: 2.719 ± 0.099
2.218GlnLeu: 2.218 ± 0.083
0.82GlnMet: 0.82 ± 0.048
2.136GlnAsn: 2.136 ± 0.084
0.602GlnPro: 0.602 ± 0.048
0.858GlnGln: 0.858 ± 0.056
1.046GlnArg: 1.046 ± 0.061
1.855GlnSer: 1.855 ± 0.088
1.714GlnThr: 1.714 ± 0.123
1.79GlnVal: 1.79 ± 0.071
0.136GlnTrp: 0.136 ± 0.021
1.477GlnTyr: 1.477 ± 0.067
0.0GlnXaa: 0.0 ± 0.0
Arg
1.831ArgAla: 1.831 ± 0.092
0.379ArgCys: 0.379 ± 0.033
1.932ArgAsp: 1.932 ± 0.077
2.602ArgGlu: 2.602 ± 0.091
1.3ArgPhe: 1.3 ± 0.061
1.779ArgGly: 1.779 ± 0.078
0.436ArgHis: 0.436 ± 0.032
3.411ArgIle: 3.411 ± 0.113
3.599ArgLys: 3.599 ± 0.115
2.763ArgLeu: 2.763 ± 0.097
1.041ArgMet: 1.041 ± 0.059
2.422ArgAsn: 2.422 ± 0.093
0.943ArgPro: 0.943 ± 0.062
1.065ArgGln: 1.065 ± 0.063
1.46ArgArg: 1.46 ± 0.074
1.616ArgSer: 1.616 ± 0.071
1.839ArgThr: 1.839 ± 0.06
1.986ArgVal: 1.986 ± 0.08
0.259ArgTrp: 0.259 ± 0.027
1.697ArgTyr: 1.697 ± 0.07
0.0ArgXaa: 0.0 ± 0.0
Ser
3.095SerAla: 3.095 ± 0.135
0.539SerCys: 0.539 ± 0.035
3.73SerAsp: 3.73 ± 0.1
4.392SerGlu: 4.392 ± 0.122
2.537SerPhe: 2.537 ± 0.107
4.122SerGly: 4.122 ± 0.208
0.719SerHis: 0.719 ± 0.043
5.934SerIle: 5.934 ± 0.14
6.062SerLys: 6.062 ± 0.151
4.76SerLeu: 4.76 ± 0.108
1.466SerMet: 1.466 ± 0.068
4.406SerAsn: 4.406 ± 0.149
1.395SerPro: 1.395 ± 0.068
1.973SerGln: 1.973 ± 0.075
2.147SerArg: 2.147 ± 0.082
4.586SerSer: 4.586 ± 0.225
3.52SerThr: 3.52 ± 0.202
3.537SerVal: 3.537 ± 0.115
0.458SerTrp: 0.458 ± 0.047
2.621SerTyr: 2.621 ± 0.105
0.0SerXaa: 0.0 ± 0.0
Thr
3.229ThrAla: 3.229 ± 0.201
0.537ThrCys: 0.537 ± 0.04
3.201ThrAsp: 3.201 ± 0.128
3.771ThrGlu: 3.771 ± 0.122
2.112ThrPhe: 2.112 ± 0.071
3.943ThrGly: 3.943 ± 0.156
0.749ThrHis: 0.749 ± 0.046
5.847ThrIle: 5.847 ± 0.128
4.605ThrLys: 4.605 ± 0.146
4.749ThrLeu: 4.749 ± 0.166
1.275ThrMet: 1.275 ± 0.063
3.629ThrAsn: 3.629 ± 0.183
1.796ThrPro: 1.796 ± 0.082
1.692ThrGln: 1.692 ± 0.065
1.806ThrArg: 1.806 ± 0.077
3.749ThrSer: 3.749 ± 0.166
3.692ThrThr: 3.692 ± 0.455
3.877ThrVal: 3.877 ± 0.189
0.406ThrTrp: 0.406 ± 0.061
2.545ThrTyr: 2.545 ± 0.149
0.0ThrXaa: 0.0 ± 0.0
Val
3.749ValAla: 3.749 ± 0.13
0.741ValCys: 0.741 ± 0.046
3.466ValAsp: 3.466 ± 0.117
4.327ValGlu: 4.327 ± 0.123
2.098ValPhe: 2.098 ± 0.074
3.733ValGly: 3.733 ± 0.112
0.826ValHis: 0.826 ± 0.05
6.179ValIle: 6.179 ± 0.136
5.373ValLys: 5.373 ± 0.15
4.91ValLeu: 4.91 ± 0.142
1.4ValMet: 1.4 ± 0.064
3.686ValAsn: 3.686 ± 0.106
1.915ValPro: 1.915 ± 0.085
1.826ValGln: 1.826 ± 0.076
2.063ValArg: 2.063 ± 0.084
4.035ValSer: 4.035 ± 0.11
3.76ValThr: 3.76 ± 0.157
3.809ValVal: 3.809 ± 0.129
0.379ValTrp: 0.379 ± 0.034
2.605ValTyr: 2.605 ± 0.086
0.0ValXaa: 0.0 ± 0.0
Trp
0.305TrpAla: 0.305 ± 0.027
0.093TrpCys: 0.093 ± 0.016
0.39TrpAsp: 0.39 ± 0.035
0.346TrpGlu: 0.346 ± 0.029
0.245TrpPhe: 0.245 ± 0.026
0.444TrpGly: 0.444 ± 0.033
0.101TrpHis: 0.101 ± 0.015
0.643TrpIle: 0.643 ± 0.045
0.539TrpLys: 0.539 ± 0.04
0.529TrpLeu: 0.529 ± 0.034
0.15TrpMet: 0.15 ± 0.02
0.545TrpAsn: 0.545 ± 0.039
0.153TrpPro: 0.153 ± 0.023
0.237TrpGln: 0.237 ± 0.041
0.234TrpArg: 0.234 ± 0.028
0.398TrpSer: 0.398 ± 0.051
0.371TrpThr: 0.371 ± 0.077
0.294TrpVal: 0.294 ± 0.028
0.076TrpTrp: 0.076 ± 0.014
0.292TrpTyr: 0.292 ± 0.03
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.362TyrAla: 2.362 ± 0.087
0.52TyrCys: 0.52 ± 0.039
2.646TyrAsp: 2.646 ± 0.086
3.054TyrGlu: 3.054 ± 0.096
1.676TyrPhe: 1.676 ± 0.078
2.597TyrGly: 2.597 ± 0.095
0.589TyrHis: 0.589 ± 0.037
4.575TyrIle: 4.575 ± 0.139
3.853TyrLys: 3.853 ± 0.107
3.452TyrLeu: 3.452 ± 0.107
1.144TyrMet: 1.144 ± 0.056
3.449TyrAsn: 3.449 ± 0.112
1.191TyrPro: 1.191 ± 0.062
1.204TyrGln: 1.204 ± 0.056
1.509TyrArg: 1.509 ± 0.065
3.052TyrSer: 3.052 ± 0.098
2.795TyrThr: 2.795 ± 0.133
2.477TyrVal: 2.477 ± 0.092
0.327TyrTrp: 0.327 ± 0.031
2.03TyrTyr: 2.03 ± 0.097
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 1163 proteins (367022 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