Amino acid dipepetide frequency for Flavobacterium sp. BFFFF2

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
5.919AlaAla: 5.919 ± 0.177
0.856AlaCys: 0.856 ± 0.039
3.877AlaAsp: 3.877 ± 0.12
3.836AlaGlu: 3.836 ± 0.083
3.661AlaPhe: 3.661 ± 0.063
5.0AlaGly: 5.0 ± 0.163
1.428AlaHis: 1.428 ± 0.05
5.294AlaIle: 5.294 ± 0.079
4.093AlaLys: 4.093 ± 0.09
7.198AlaLeu: 7.198 ± 0.119
1.529AlaMet: 1.529 ± 0.04
3.923AlaAsn: 3.923 ± 0.087
2.535AlaPro: 2.535 ± 0.078
3.474AlaGln: 3.474 ± 0.07
2.3AlaArg: 2.3 ± 0.05
4.742AlaSer: 4.742 ± 0.129
5.517AlaThr: 5.517 ± 0.242
4.89AlaVal: 4.89 ± 0.098
0.757AlaTrp: 0.757 ± 0.029
2.642AlaTyr: 2.642 ± 0.061
0.0AlaXaa: 0.0 ± 0.0
Cys
0.797CysAla: 0.797 ± 0.046
0.136CysCys: 0.136 ± 0.01
0.467CysAsp: 0.467 ± 0.022
0.524CysGlu: 0.524 ± 0.029
0.58CysPhe: 0.58 ± 0.027
0.876CysGly: 0.876 ± 0.048
0.262CysHis: 0.262 ± 0.019
0.619CysIle: 0.619 ± 0.023
0.529CysLys: 0.529 ± 0.023
0.892CysLeu: 0.892 ± 0.032
0.186CysMet: 0.186 ± 0.015
0.574CysAsn: 0.574 ± 0.036
0.395CysPro: 0.395 ± 0.022
0.4CysGln: 0.4 ± 0.019
0.283CysArg: 0.283 ± 0.019
0.902CysSer: 0.902 ± 0.052
0.731CysThr: 0.731 ± 0.036
0.584CysVal: 0.584 ± 0.026
0.131CysTrp: 0.131 ± 0.012
0.427CysTyr: 0.427 ± 0.02
0.0CysXaa: 0.0 ± 0.0
Asp
3.671AspAla: 3.671 ± 0.084
0.496AspCys: 0.496 ± 0.022
2.251AspAsp: 2.251 ± 0.054
3.027AspGlu: 3.027 ± 0.082
3.147AspPhe: 3.147 ± 0.061
3.43AspGly: 3.43 ± 0.087
1.019AspHis: 1.019 ± 0.03
3.407AspIle: 3.407 ± 0.073
3.086AspLys: 3.086 ± 0.077
4.786AspLeu: 4.786 ± 0.089
1.001AspMet: 1.001 ± 0.036
2.484AspAsn: 2.484 ± 0.063
1.89AspPro: 1.89 ± 0.063
2.162AspGln: 2.162 ± 0.049
1.93AspArg: 1.93 ± 0.054
2.755AspSer: 2.755 ± 0.066
2.67AspThr: 2.67 ± 0.11
3.192AspVal: 3.192 ± 0.051
0.736AspTrp: 0.736 ± 0.027
2.363AspTyr: 2.363 ± 0.056
0.0AspXaa: 0.0 ± 0.0
Glu
4.235GluAla: 4.235 ± 0.093
0.351GluCys: 0.351 ± 0.017
2.245GluAsp: 2.245 ± 0.065
3.116GluGlu: 3.116 ± 0.087
2.34GluPhe: 2.34 ± 0.056
3.029GluGly: 3.029 ± 0.064
1.037GluHis: 1.037 ± 0.036
4.025GluIle: 4.025 ± 0.086
4.357GluLys: 4.357 ± 0.113
5.453GluLeu: 5.453 ± 0.11
1.45GluMet: 1.45 ± 0.042
3.272GluAsn: 3.272 ± 0.077
1.566GluPro: 1.566 ± 0.044
2.601GluGln: 2.601 ± 0.062
2.216GluArg: 2.216 ± 0.059
3.054GluSer: 3.054 ± 0.063
3.282GluThr: 3.282 ± 0.074
3.732GluVal: 3.732 ± 0.071
0.72GluTrp: 0.72 ± 0.026
1.884GluTyr: 1.884 ± 0.055
0.0GluXaa: 0.0 ± 0.0
Phe
3.258PheAla: 3.258 ± 0.063
0.604PheCys: 0.604 ± 0.029
3.355PheAsp: 3.355 ± 0.064
3.176PheGlu: 3.176 ± 0.071
2.614PhePhe: 2.614 ± 0.064
3.598PheGly: 3.598 ± 0.071
0.938PheHis: 0.938 ± 0.033
3.368PheIle: 3.368 ± 0.066
3.171PheLys: 3.171 ± 0.068
4.446PheLeu: 4.446 ± 0.101
1.172PheMet: 1.172 ± 0.033
2.931PheAsn: 2.931 ± 0.069
1.786PhePro: 1.786 ± 0.051
1.89PheGln: 1.89 ± 0.045
1.708PheArg: 1.708 ± 0.045
4.083PheSer: 4.083 ± 0.064
3.672PheThr: 3.672 ± 0.094
3.105PheVal: 3.105 ± 0.063
0.709PheTrp: 0.709 ± 0.031
2.122PheTyr: 2.122 ± 0.05
0.0PheXaa: 0.0 ± 0.0
Gly
4.694GlyAla: 4.694 ± 0.145
0.79GlyCys: 0.79 ± 0.035
2.899GlyAsp: 2.899 ± 0.092
2.66GlyGlu: 2.66 ± 0.061
3.677GlyPhe: 3.677 ± 0.073
4.776GlyGly: 4.776 ± 0.14
1.131GlyHis: 1.131 ± 0.042
4.933GlyIle: 4.933 ± 0.087
4.138GlyLys: 4.138 ± 0.094
5.699GlyLeu: 5.699 ± 0.092
1.514GlyMet: 1.514 ± 0.045
3.866GlyAsn: 3.866 ± 0.098
1.519GlyPro: 1.519 ± 0.045
2.624GlyGln: 2.624 ± 0.054
1.91GlyArg: 1.91 ± 0.055
4.872GlySer: 4.872 ± 0.151
5.754GlyThr: 5.754 ± 0.256
4.372GlyVal: 4.372 ± 0.088
0.834GlyTrp: 0.834 ± 0.031
2.715GlyTyr: 2.715 ± 0.061
0.0GlyXaa: 0.0 ± 0.0
His
1.208HisAla: 1.208 ± 0.037
0.263HisCys: 0.263 ± 0.015
0.866HisAsp: 0.866 ± 0.032
1.089HisGlu: 1.089 ± 0.039
1.469HisPhe: 1.469 ± 0.044
1.084HisGly: 1.084 ± 0.036
0.559HisHis: 0.559 ± 0.028
1.405HisIle: 1.405 ± 0.042
1.066HisLys: 1.066 ± 0.035
2.085HisLeu: 2.085 ± 0.052
0.301HisMet: 0.301 ± 0.018
0.849HisAsn: 0.849 ± 0.027
0.957HisPro: 0.957 ± 0.036
1.065HisGln: 1.065 ± 0.035
0.769HisArg: 0.769 ± 0.028
1.095HisSer: 1.095 ± 0.037
1.004HisThr: 1.004 ± 0.033
1.057HisVal: 1.057 ± 0.039
0.335HisTrp: 0.335 ± 0.021
0.892HisTyr: 0.892 ± 0.034
0.0HisXaa: 0.0 ± 0.0
Ile
5.126IleAla: 5.126 ± 0.074
0.881IleCys: 0.881 ± 0.035
4.293IleAsp: 4.293 ± 0.077
4.43IleGlu: 4.43 ± 0.099
2.857IlePhe: 2.857 ± 0.071
4.51IleGly: 4.51 ± 0.09
1.45IleHis: 1.45 ± 0.037
4.637IleIle: 4.637 ± 0.105
4.453IleLys: 4.453 ± 0.091
5.801IleLeu: 5.801 ± 0.09
1.178IleMet: 1.178 ± 0.043
4.078IleAsn: 4.078 ± 0.068
3.114IlePro: 3.114 ± 0.068
3.086IleGln: 3.086 ± 0.064
2.681IleArg: 2.681 ± 0.062
5.235IleSer: 5.235 ± 0.09
4.883IleThr: 4.883 ± 0.117
4.023IleVal: 4.023 ± 0.071
0.751IleTrp: 0.751 ± 0.029
2.641IleTyr: 2.641 ± 0.06
0.0IleXaa: 0.0 ± 0.0
Lys
4.456LysAla: 4.456 ± 0.095
0.403LysCys: 0.403 ± 0.02
3.182LysAsp: 3.182 ± 0.08
4.125LysGlu: 4.125 ± 0.102
2.238LysPhe: 2.238 ± 0.059
3.815LysGly: 3.815 ± 0.081
1.159LysHis: 1.159 ± 0.039
4.724LysIle: 4.724 ± 0.105
5.424LysLys: 5.424 ± 0.118
5.442LysLeu: 5.442 ± 0.103
1.894LysMet: 1.894 ± 0.053
4.104LysAsn: 4.104 ± 0.092
2.49LysPro: 2.49 ± 0.069
2.513LysGln: 2.513 ± 0.065
2.506LysArg: 2.506 ± 0.064
3.944LysSer: 3.944 ± 0.082
4.166LysThr: 4.166 ± 0.078
3.881LysVal: 3.881 ± 0.091
0.891LysTrp: 0.891 ± 0.036
2.383LysTyr: 2.383 ± 0.055
0.0LysXaa: 0.0 ± 0.0
Leu
6.711LeuAla: 6.711 ± 0.093
0.913LeuCys: 0.913 ± 0.032
4.568LeuAsp: 4.568 ± 0.079
5.07LeuGlu: 5.07 ± 0.126
5.252LeuPhe: 5.252 ± 0.11
5.579LeuGly: 5.579 ± 0.087
1.919LeuHis: 1.919 ± 0.047
6.262LeuIle: 6.262 ± 0.107
6.331LeuLys: 6.331 ± 0.133
9.145LeuLeu: 9.145 ± 0.193
2.075LeuMet: 2.075 ± 0.057
5.204LeuAsn: 5.204 ± 0.088
3.971LeuPro: 3.971 ± 0.076
4.072LeuGln: 4.072 ± 0.086
3.276LeuArg: 3.276 ± 0.07
6.715LeuSer: 6.715 ± 0.097
6.109LeuThr: 6.109 ± 0.132
5.549LeuVal: 5.549 ± 0.089
0.925LeuTrp: 0.925 ± 0.037
3.143LeuTyr: 3.143 ± 0.067
0.0LeuXaa: 0.0 ± 0.0
Met
1.832MetAla: 1.832 ± 0.043
0.142MetCys: 0.142 ± 0.013
1.061MetAsp: 1.061 ± 0.037
1.286MetGlu: 1.286 ± 0.038
0.746MetPhe: 0.746 ± 0.031
1.482MetGly: 1.482 ± 0.048
0.43MetHis: 0.43 ± 0.022
1.392MetIle: 1.392 ± 0.036
1.768MetLys: 1.768 ± 0.05
1.83MetLeu: 1.83 ± 0.049
0.55MetMet: 0.55 ± 0.026
1.351MetAsn: 1.351 ± 0.038
0.89MetPro: 0.89 ± 0.027
0.935MetGln: 0.935 ± 0.035
0.863MetArg: 0.863 ± 0.029
1.461MetSer: 1.461 ± 0.04
1.346MetThr: 1.346 ± 0.041
1.459MetVal: 1.459 ± 0.036
0.183MetTrp: 0.183 ± 0.013
0.71MetTyr: 0.71 ± 0.027
0.0MetXaa: 0.0 ± 0.0
Asn
4.093AsnAla: 4.093 ± 0.096
0.593AsnCys: 0.593 ± 0.03
2.702AsnAsp: 2.702 ± 0.064
3.104AsnGlu: 3.104 ± 0.084
2.542AsnPhe: 2.542 ± 0.055
4.41AsnGly: 4.41 ± 0.112
1.087AsnHis: 1.087 ± 0.039
3.744AsnIle: 3.744 ± 0.061
3.359AsnLys: 3.359 ± 0.085
4.943AsnLeu: 4.943 ± 0.097
1.217AsnMet: 1.217 ± 0.039
3.774AsnAsn: 3.774 ± 0.099
3.0AsnPro: 3.0 ± 0.065
2.828AsnGln: 2.828 ± 0.067
2.248AsnArg: 2.248 ± 0.054
3.77AsnSer: 3.77 ± 0.106
3.926AsnThr: 3.926 ± 0.117
3.302AsnVal: 3.302 ± 0.079
0.863AsnTrp: 0.863 ± 0.029
2.677AsnTyr: 2.677 ± 0.065
0.0AsnXaa: 0.0 ± 0.0
Pro
3.013ProAla: 3.013 ± 0.078
0.302ProCys: 0.302 ± 0.022
2.01ProAsp: 2.01 ± 0.05
2.342ProGlu: 2.342 ± 0.06
2.091ProPhe: 2.091 ± 0.056
1.931ProGly: 1.931 ± 0.055
0.702ProHis: 0.702 ± 0.028
3.003ProIle: 3.003 ± 0.06
2.271ProLys: 2.271 ± 0.061
3.347ProLeu: 3.347 ± 0.067
0.831ProMet: 0.831 ± 0.031
2.557ProAsn: 2.557 ± 0.056
0.899ProPro: 0.899 ± 0.035
1.433ProGln: 1.433 ± 0.043
0.929ProArg: 0.929 ± 0.032
2.656ProSer: 2.656 ± 0.066
3.083ProThr: 3.083 ± 0.126
2.601ProVal: 2.601 ± 0.069
0.326ProTrp: 0.326 ± 0.016
1.459ProTyr: 1.459 ± 0.035
0.0ProXaa: 0.0 ± 0.0
Gln
3.115GlnAla: 3.115 ± 0.057
0.438GlnCys: 0.438 ± 0.025
1.656GlnAsp: 1.656 ± 0.041
2.146GlnGlu: 2.146 ± 0.058
2.271GlnPhe: 2.271 ± 0.047
2.244GlnGly: 2.244 ± 0.06
0.916GlnHis: 0.916 ± 0.03
2.995GlnIle: 2.995 ± 0.056
3.068GlnLys: 3.068 ± 0.07
4.928GlnLeu: 4.928 ± 0.101
0.996GlnMet: 0.996 ± 0.031
2.372GlnAsn: 2.372 ± 0.061
1.413GlnPro: 1.413 ± 0.042
2.381GlnGln: 2.381 ± 0.069
1.545GlnArg: 1.545 ± 0.045
2.759GlnSer: 2.759 ± 0.062
2.841GlnThr: 2.841 ± 0.069
2.848GlnVal: 2.848 ± 0.059
0.728GlnTrp: 0.728 ± 0.041
1.574GlnTyr: 1.574 ± 0.042
0.0GlnXaa: 0.0 ± 0.0
Arg
2.202ArgAla: 2.202 ± 0.051
0.298ArgCys: 0.298 ± 0.016
1.615ArgAsp: 1.615 ± 0.051
2.055ArgGlu: 2.055 ± 0.057
2.187ArgPhe: 2.187 ± 0.054
1.726ArgGly: 1.726 ± 0.044
0.686ArgHis: 0.686 ± 0.028
2.824ArgIle: 2.824 ± 0.062
2.551ArgLys: 2.551 ± 0.069
3.497ArgLeu: 3.497 ± 0.073
0.992ArgMet: 0.992 ± 0.028
1.954ArgAsn: 1.954 ± 0.049
1.172ArgPro: 1.172 ± 0.037
1.38ArgGln: 1.38 ± 0.041
1.253ArgArg: 1.253 ± 0.043
2.045ArgSer: 2.045 ± 0.058
1.94ArgThr: 1.94 ± 0.049
2.263ArgVal: 2.263 ± 0.05
0.473ArgTrp: 0.473 ± 0.022
1.5ArgTyr: 1.5 ± 0.039
0.0ArgXaa: 0.0 ± 0.0
Ser
4.905SerAla: 4.905 ± 0.142
0.783SerCys: 0.783 ± 0.033
3.07SerAsp: 3.07 ± 0.064
3.045SerGlu: 3.045 ± 0.061
3.871SerPhe: 3.871 ± 0.079
5.343SerGly: 5.343 ± 0.184
1.17SerHis: 1.17 ± 0.039
5.071SerIle: 5.071 ± 0.085
4.064SerLys: 4.064 ± 0.083
6.292SerLeu: 6.292 ± 0.103
1.426SerMet: 1.426 ± 0.033
4.314SerAsn: 4.314 ± 0.13
2.555SerPro: 2.555 ± 0.077
2.576SerGln: 2.576 ± 0.052
1.979SerArg: 1.979 ± 0.049
4.877SerSer: 4.877 ± 0.177
4.991SerThr: 4.991 ± 0.201
4.461SerVal: 4.461 ± 0.11
0.852SerTrp: 0.852 ± 0.035
2.682SerTyr: 2.682 ± 0.058
0.0SerXaa: 0.0 ± 0.0
Thr
5.728ThrAla: 5.728 ± 0.225
0.57ThrCys: 0.57 ± 0.03
3.519ThrAsp: 3.519 ± 0.08
3.068ThrGlu: 3.068 ± 0.056
3.63ThrPhe: 3.63 ± 0.084
5.336ThrGly: 5.336 ± 0.257
1.177ThrHis: 1.177 ± 0.035
5.016ThrIle: 5.016 ± 0.123
3.182ThrLys: 3.182 ± 0.069
6.3ThrLeu: 6.3 ± 0.141
1.057ThrMet: 1.057 ± 0.038
3.953ThrAsn: 3.953 ± 0.122
3.373ThrPro: 3.373 ± 0.116
2.802ThrGln: 2.802 ± 0.08
1.843ThrArg: 1.843 ± 0.05
4.88ThrSer: 4.88 ± 0.202
5.624ThrThr: 5.624 ± 0.292
4.749ThrVal: 4.749 ± 0.213
0.824ThrTrp: 0.824 ± 0.041
3.019ThrTyr: 3.019 ± 0.097
0.0ThrXaa: 0.0 ± 0.0
Val
4.973ValAla: 4.973 ± 0.108
0.854ValCys: 0.854 ± 0.054
3.239ValAsp: 3.239 ± 0.072
3.29ValGlu: 3.29 ± 0.063
3.441ValPhe: 3.441 ± 0.061
3.968ValGly: 3.968 ± 0.069
1.191ValHis: 1.191 ± 0.037
4.221ValIle: 4.221 ± 0.067
3.748ValLys: 3.748 ± 0.071
5.852ValLeu: 5.852 ± 0.094
1.275ValMet: 1.275 ± 0.037
3.52ValAsn: 3.52 ± 0.081
2.459ValPro: 2.459 ± 0.054
2.474ValGln: 2.474 ± 0.048
2.253ValArg: 2.253 ± 0.054
4.823ValSer: 4.823 ± 0.125
4.597ValThr: 4.597 ± 0.228
4.606ValVal: 4.606 ± 0.079
0.709ValTrp: 0.709 ± 0.029
2.45ValTyr: 2.45 ± 0.055
0.0ValXaa: 0.0 ± 0.0
Trp
0.877TrpAla: 0.877 ± 0.033
0.109TrpCys: 0.109 ± 0.011
0.621TrpAsp: 0.621 ± 0.028
0.684TrpGlu: 0.684 ± 0.029
0.649TrpPhe: 0.649 ± 0.026
0.808TrpGly: 0.808 ± 0.032
0.311TrpHis: 0.311 ± 0.017
0.795TrpIle: 0.795 ± 0.03
0.752TrpLys: 0.752 ± 0.03
1.054TrpLeu: 1.054 ± 0.038
0.35TrpMet: 0.35 ± 0.018
0.762TrpAsn: 0.762 ± 0.03
0.303TrpPro: 0.303 ± 0.019
0.741TrpGln: 0.741 ± 0.041
0.392TrpArg: 0.392 ± 0.02
0.915TrpSer: 0.915 ± 0.041
0.776TrpThr: 0.776 ± 0.036
0.86TrpVal: 0.86 ± 0.034
0.145TrpTrp: 0.145 ± 0.014
0.553TrpTyr: 0.553 ± 0.034
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.658TyrAla: 2.658 ± 0.058
0.515TyrCys: 0.515 ± 0.024
2.007TyrAsp: 2.007 ± 0.052
1.893TyrGlu: 1.893 ± 0.045
2.441TyrPhe: 2.441 ± 0.057
2.43TyrGly: 2.43 ± 0.059
0.846TyrHis: 0.846 ± 0.03
2.375TyrIle: 2.375 ± 0.061
2.326TyrLys: 2.326 ± 0.063
3.797TyrLeu: 3.797 ± 0.077
0.72TyrMet: 0.72 ± 0.031
2.34TyrAsn: 2.34 ± 0.058
1.5TyrPro: 1.5 ± 0.045
1.797TyrGln: 1.797 ± 0.04
1.73TyrArg: 1.73 ± 0.053
2.746TyrSer: 2.746 ± 0.06
2.74TyrThr: 2.74 ± 0.08
2.409TyrVal: 2.409 ± 0.056
0.568TyrTrp: 0.568 ± 0.027
1.884TyrTyr: 1.884 ± 0.051
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 3021 proteins (1062431 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