Amino acid dipepetide frequency for Clostridium sp. CAG:265

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
3.895AlaAla: 3.895 ± 0.108
0.636AlaCys: 0.636 ± 0.03
2.724AlaAsp: 2.724 ± 0.067
3.864AlaGlu: 3.864 ± 0.084
2.416AlaPhe: 2.416 ± 0.057
3.73AlaGly: 3.73 ± 0.095
0.834AlaHis: 0.834 ± 0.038
6.146AlaIle: 6.146 ± 0.107
4.814AlaLys: 4.814 ± 0.093
5.893AlaLeu: 5.893 ± 0.116
1.746AlaMet: 1.746 ± 0.052
2.78AlaAsn: 2.78 ± 0.069
1.455AlaPro: 1.455 ± 0.05
1.421AlaGln: 1.421 ± 0.041
1.98AlaArg: 1.98 ± 0.057
3.291AlaSer: 3.291 ± 0.072
2.898AlaThr: 2.898 ± 0.075
4.253AlaVal: 4.253 ± 0.092
0.343AlaTrp: 0.343 ± 0.024
2.248AlaTyr: 2.248 ± 0.054
0.0AlaXaa: 0.0 ± 0.0
Cys
0.599CysAla: 0.599 ± 0.028
0.215CysCys: 0.215 ± 0.023
0.665CysAsp: 0.665 ± 0.031
0.738CysGlu: 0.738 ± 0.031
0.45CysPhe: 0.45 ± 0.024
1.144CysGly: 1.144 ± 0.042
0.213CysHis: 0.213 ± 0.019
1.103CysIle: 1.103 ± 0.043
0.945CysLys: 0.945 ± 0.033
0.855CysLeu: 0.855 ± 0.035
0.267CysMet: 0.267 ± 0.02
0.858CysAsn: 0.858 ± 0.034
0.468CysPro: 0.468 ± 0.027
0.248CysGln: 0.248 ± 0.018
0.421CysArg: 0.421 ± 0.027
0.83CysSer: 0.83 ± 0.034
0.649CysThr: 0.649 ± 0.033
0.603CysVal: 0.603 ± 0.03
0.065CysTrp: 0.065 ± 0.009
0.492CysTyr: 0.492 ± 0.03
0.0CysXaa: 0.0 ± 0.0
Asp
2.706AspAla: 2.706 ± 0.066
0.584AspCys: 0.584 ± 0.031
3.066AspAsp: 3.066 ± 0.07
5.079AspGlu: 5.079 ± 0.099
2.638AspPhe: 2.638 ± 0.068
3.614AspGly: 3.614 ± 0.084
0.52AspHis: 0.52 ± 0.031
6.174AspIle: 6.174 ± 0.097
5.184AspLys: 5.184 ± 0.097
4.907AspLeu: 4.907 ± 0.073
1.476AspMet: 1.476 ± 0.044
3.561AspAsn: 3.561 ± 0.092
1.108AspPro: 1.108 ± 0.037
0.749AspGln: 0.749 ± 0.036
1.789AspArg: 1.789 ± 0.049
3.154AspSer: 3.154 ± 0.069
2.64AspThr: 2.64 ± 0.066
3.719AspVal: 3.719 ± 0.069
0.315AspTrp: 0.315 ± 0.021
2.649AspTyr: 2.649 ± 0.062
0.0AspXaa: 0.0 ± 0.0
Glu
4.584GluAla: 4.584 ± 0.09
0.774GluCys: 0.774 ± 0.032
4.529GluAsp: 4.529 ± 0.101
7.994GluGlu: 7.994 ± 0.158
3.134GluPhe: 3.134 ± 0.075
4.483GluGly: 4.483 ± 0.089
0.94GluHis: 0.94 ± 0.035
7.843GluIle: 7.843 ± 0.116
7.691GluLys: 7.691 ± 0.137
6.876GluLeu: 6.876 ± 0.125
2.09GluMet: 2.09 ± 0.053
5.62GluAsn: 5.62 ± 0.101
1.389GluPro: 1.389 ± 0.049
1.79GluGln: 1.79 ± 0.052
2.73GluArg: 2.73 ± 0.072
3.96GluSer: 3.96 ± 0.086
2.896GluThr: 2.896 ± 0.075
5.671GluVal: 5.671 ± 0.088
0.423GluTrp: 0.423 ± 0.025
3.479GluTyr: 3.479 ± 0.072
0.0GluXaa: 0.0 ± 0.0
Phe
2.25PheAla: 2.25 ± 0.063
0.485PheCys: 0.485 ± 0.027
2.394PheAsp: 2.394 ± 0.056
2.684PheGlu: 2.684 ± 0.062
1.764PhePhe: 1.764 ± 0.061
2.651PheGly: 2.651 ± 0.062
0.516PheHis: 0.516 ± 0.024
4.756PheIle: 4.756 ± 0.1
3.844PheLys: 3.844 ± 0.08
3.624PheLeu: 3.624 ± 0.08
1.056PheMet: 1.056 ± 0.039
2.947PheAsn: 2.947 ± 0.076
1.022PhePro: 1.022 ± 0.039
0.894PheGln: 0.894 ± 0.034
1.276PheArg: 1.276 ± 0.047
2.886PheSer: 2.886 ± 0.063
2.294PheThr: 2.294 ± 0.066
2.553PheVal: 2.553 ± 0.063
0.26PheTrp: 0.26 ± 0.02
1.721PheTyr: 1.721 ± 0.054
0.0PheXaa: 0.0 ± 0.0
Gly
4.129GlyAla: 4.129 ± 0.099
0.884GlyCys: 0.884 ± 0.038
3.34GlyAsp: 3.34 ± 0.074
4.467GlyGlu: 4.467 ± 0.088
2.926GlyPhe: 2.926 ± 0.084
4.157GlyGly: 4.157 ± 0.11
0.956GlyHis: 0.956 ± 0.038
6.616GlyIle: 6.616 ± 0.102
5.481GlyLys: 5.481 ± 0.107
5.318GlyLeu: 5.318 ± 0.1
1.699GlyMet: 1.699 ± 0.052
3.427GlyAsn: 3.427 ± 0.08
1.205GlyPro: 1.205 ± 0.048
1.44GlyGln: 1.44 ± 0.045
2.394GlyArg: 2.394 ± 0.062
3.756GlySer: 3.756 ± 0.077
3.328GlyThr: 3.328 ± 0.069
4.776GlyVal: 4.776 ± 0.096
0.436GlyTrp: 0.436 ± 0.028
3.072GlyTyr: 3.072 ± 0.07
0.0GlyXaa: 0.0 ± 0.0
His
0.631HisAla: 0.631 ± 0.033
0.202HisCys: 0.202 ± 0.017
0.695HisAsp: 0.695 ± 0.035
0.866HisGlu: 0.866 ± 0.036
0.552HisPhe: 0.552 ± 0.028
1.005HisGly: 1.005 ± 0.039
0.281HisHis: 0.281 ± 0.022
1.312HisIle: 1.312 ± 0.044
1.082HisLys: 1.082 ± 0.04
1.135HisLeu: 1.135 ± 0.038
0.359HisMet: 0.359 ± 0.023
0.755HisAsn: 0.755 ± 0.035
0.602HisPro: 0.602 ± 0.032
0.308HisGln: 0.308 ± 0.022
0.478HisArg: 0.478 ± 0.025
0.81HisSer: 0.81 ± 0.037
0.578HisThr: 0.578 ± 0.033
0.734HisVal: 0.734 ± 0.033
0.076HisTrp: 0.076 ± 0.009
0.514HisTyr: 0.514 ± 0.03
0.0HisXaa: 0.0 ± 0.0
Ile
6.079IleAla: 6.079 ± 0.106
1.341IleCys: 1.341 ± 0.052
6.02IleAsp: 6.02 ± 0.095
7.377IleGlu: 7.377 ± 0.113
4.215IlePhe: 4.215 ± 0.097
6.17IleGly: 6.17 ± 0.109
1.212IleHis: 1.212 ± 0.045
9.794IleIle: 9.794 ± 0.176
8.92IleLys: 8.92 ± 0.135
9.159IleLeu: 9.159 ± 0.142
2.343IleMet: 2.343 ± 0.059
6.996IleAsn: 6.996 ± 0.112
3.124IlePro: 3.124 ± 0.071
1.996IleGln: 1.996 ± 0.06
3.156IleArg: 3.156 ± 0.069
7.004IleSer: 7.004 ± 0.113
5.15IleThr: 5.15 ± 0.088
6.361IleVal: 6.361 ± 0.095
0.465IleTrp: 0.465 ± 0.026
3.866IleTyr: 3.866 ± 0.071
0.0IleXaa: 0.0 ± 0.0
Lys
4.849LysAla: 4.849 ± 0.093
0.958LysCys: 0.958 ± 0.037
5.527LysAsp: 5.527 ± 0.085
9.382LysGlu: 9.382 ± 0.164
3.182LysPhe: 3.182 ± 0.064
5.041LysGly: 5.041 ± 0.082
0.997LysHis: 0.997 ± 0.04
8.237LysIle: 8.237 ± 0.118
7.909LysLys: 7.909 ± 0.14
7.174LysLeu: 7.174 ± 0.112
2.272LysMet: 2.272 ± 0.053
6.213LysAsn: 6.213 ± 0.086
1.943LysPro: 1.943 ± 0.054
1.793LysGln: 1.793 ± 0.046
3.15LysArg: 3.15 ± 0.069
5.225LysSer: 5.225 ± 0.081
3.607LysThr: 3.607 ± 0.068
6.186LysVal: 6.186 ± 0.104
0.558LysTrp: 0.558 ± 0.027
4.347LysTyr: 4.347 ± 0.084
0.0LysXaa: 0.0 ± 0.0
Leu
5.388LeuAla: 5.388 ± 0.095
1.071LeuCys: 1.071 ± 0.037
4.984LeuAsp: 4.984 ± 0.092
6.66LeuGlu: 6.66 ± 0.124
3.501LeuPhe: 3.501 ± 0.081
5.918LeuGly: 5.918 ± 0.094
1.074LeuHis: 1.074 ± 0.042
7.96LeuIle: 7.96 ± 0.134
8.25LeuLys: 8.25 ± 0.122
7.634LeuLeu: 7.634 ± 0.114
2.383LeuMet: 2.383 ± 0.054
6.168LeuAsn: 6.168 ± 0.099
2.708LeuPro: 2.708 ± 0.062
1.999LeuGln: 1.999 ± 0.048
3.154LeuArg: 3.154 ± 0.063
6.547LeuSer: 6.547 ± 0.111
4.354LeuThr: 4.354 ± 0.085
5.37LeuVal: 5.37 ± 0.092
0.52LeuTrp: 0.52 ± 0.029
3.325LeuTyr: 3.325 ± 0.066
0.0LeuXaa: 0.0 ± 0.0
Met
1.89MetAla: 1.89 ± 0.052
0.281MetCys: 0.281 ± 0.018
1.508MetAsp: 1.508 ± 0.047
2.027MetGlu: 2.027 ± 0.062
0.942MetPhe: 0.942 ± 0.035
1.711MetGly: 1.711 ± 0.053
0.347MetHis: 0.347 ± 0.021
2.425MetIle: 2.425 ± 0.064
2.484MetLys: 2.484 ± 0.062
2.225MetLeu: 2.225 ± 0.056
0.786MetMet: 0.786 ± 0.034
1.656MetAsn: 1.656 ± 0.051
0.841MetPro: 0.841 ± 0.033
0.662MetGln: 0.662 ± 0.032
0.84MetArg: 0.84 ± 0.036
1.64MetSer: 1.64 ± 0.054
1.227MetThr: 1.227 ± 0.04
1.71MetVal: 1.71 ± 0.058
0.165MetTrp: 0.165 ± 0.015
0.872MetTyr: 0.872 ± 0.033
0.0MetXaa: 0.0 ± 0.0
Asn
2.857AsnAla: 2.857 ± 0.061
0.71AsnCys: 0.71 ± 0.035
3.49AsnAsp: 3.49 ± 0.08
5.038AsnGlu: 5.038 ± 0.098
2.547AsnPhe: 2.547 ± 0.059
3.891AsnGly: 3.891 ± 0.085
0.825AsnHis: 0.825 ± 0.037
7.442AsnIle: 7.442 ± 0.129
6.297AsnLys: 6.297 ± 0.115
5.645AsnLeu: 5.645 ± 0.09
1.689AsnMet: 1.689 ± 0.051
4.932AsnAsn: 4.932 ± 0.12
2.103AsnPro: 2.103 ± 0.059
1.235AsnGln: 1.235 ± 0.045
1.965AsnArg: 1.965 ± 0.06
4.106AsnSer: 4.106 ± 0.094
3.059AsnThr: 3.059 ± 0.066
3.839AsnVal: 3.839 ± 0.077
0.42AsnTrp: 0.42 ± 0.026
2.827AsnTyr: 2.827 ± 0.071
0.0AsnXaa: 0.0 ± 0.0
Pro
1.435ProAla: 1.435 ± 0.049
0.325ProCys: 0.325 ± 0.024
1.264ProAsp: 1.264 ± 0.045
2.093ProGlu: 2.093 ± 0.058
1.254ProPhe: 1.254 ± 0.045
1.651ProGly: 1.651 ± 0.055
0.452ProHis: 0.452 ± 0.027
2.481ProIle: 2.481 ± 0.058
2.067ProLys: 2.067 ± 0.055
2.44ProLeu: 2.44 ± 0.056
0.752ProMet: 0.752 ± 0.038
1.487ProAsn: 1.487 ± 0.044
0.487ProPro: 0.487 ± 0.029
0.694ProGln: 0.694 ± 0.03
0.778ProArg: 0.778 ± 0.036
1.732ProSer: 1.732 ± 0.052
1.447ProThr: 1.447 ± 0.043
1.944ProVal: 1.944 ± 0.058
0.234ProTrp: 0.234 ± 0.021
1.203ProTyr: 1.203 ± 0.043
0.0ProXaa: 0.0 ± 0.0
Gln
1.223GlnAla: 1.223 ± 0.047
0.302GlnCys: 0.302 ± 0.023
1.048GlnAsp: 1.048 ± 0.039
1.678GlnGlu: 1.678 ± 0.059
0.859GlnPhe: 0.859 ± 0.034
1.446GlnGly: 1.446 ± 0.046
0.242GlnHis: 0.242 ± 0.018
2.115GlnIle: 2.115 ± 0.056
1.745GlnLys: 1.745 ± 0.046
1.943GlnLeu: 1.943 ± 0.048
0.643GlnMet: 0.643 ± 0.03
1.281GlnAsn: 1.281 ± 0.046
0.515GlnPro: 0.515 ± 0.028
0.626GlnGln: 0.626 ± 0.034
0.881GlnArg: 0.881 ± 0.037
1.242GlnSer: 1.242 ± 0.038
0.902GlnThr: 0.902 ± 0.032
1.49GlnVal: 1.49 ± 0.043
0.208GlnTrp: 0.208 ± 0.016
1.137GlnTyr: 1.137 ± 0.042
0.0GlnXaa: 0.0 ± 0.0
Arg
1.985ArgAla: 1.985 ± 0.053
0.445ArgCys: 0.445 ± 0.026
1.855ArgAsp: 1.855 ± 0.044
3.08ArgGlu: 3.08 ± 0.08
1.46ArgPhe: 1.46 ± 0.041
2.069ArgGly: 2.069 ± 0.055
0.457ArgHis: 0.457 ± 0.025
3.193ArgIle: 3.193 ± 0.066
3.026ArgLys: 3.026 ± 0.065
2.847ArgLeu: 2.847 ± 0.064
0.94ArgMet: 0.94 ± 0.038
2.1ArgAsn: 2.1 ± 0.053
0.821ArgPro: 0.821 ± 0.037
0.819ArgGln: 0.819 ± 0.034
1.495ArgArg: 1.495 ± 0.054
1.614ArgSer: 1.614 ± 0.05
1.524ArgThr: 1.524 ± 0.049
2.444ArgVal: 2.444 ± 0.061
0.238ArgTrp: 0.238 ± 0.018
1.433ArgTyr: 1.433 ± 0.051
0.0ArgXaa: 0.0 ± 0.0
Ser
3.327SerAla: 3.327 ± 0.069
0.673SerCys: 0.673 ± 0.031
3.214SerAsp: 3.214 ± 0.08
4.301SerGlu: 4.301 ± 0.092
2.94SerPhe: 2.94 ± 0.07
4.266SerGly: 4.266 ± 0.087
0.881SerHis: 0.881 ± 0.035
6.699SerIle: 6.699 ± 0.105
5.55SerLys: 5.55 ± 0.093
6.021SerLeu: 6.021 ± 0.1
1.601SerMet: 1.601 ± 0.046
4.001SerAsn: 4.001 ± 0.09
1.502SerPro: 1.502 ± 0.047
1.512SerGln: 1.512 ± 0.047
2.012SerArg: 2.012 ± 0.051
4.278SerSer: 4.278 ± 0.102
3.258SerThr: 3.258 ± 0.072
3.751SerVal: 3.751 ± 0.075
0.406SerTrp: 0.406 ± 0.026
2.675SerTyr: 2.675 ± 0.062
0.0SerXaa: 0.0 ± 0.0
Thr
2.999ThrAla: 2.999 ± 0.06
0.512ThrCys: 0.512 ± 0.028
2.429ThrAsp: 2.429 ± 0.066
3.183ThrGlu: 3.183 ± 0.081
2.078ThrPhe: 2.078 ± 0.058
3.501ThrGly: 3.501 ± 0.081
0.684ThrHis: 0.684 ± 0.035
5.026ThrIle: 5.026 ± 0.081
3.468ThrLys: 3.468 ± 0.07
4.768ThrLeu: 4.768 ± 0.088
1.206ThrMet: 1.206 ± 0.042
2.721ThrAsn: 2.721 ± 0.064
1.696ThrPro: 1.696 ± 0.055
0.923ThrGln: 0.923 ± 0.032
1.48ThrArg: 1.48 ± 0.048
3.197ThrSer: 3.197 ± 0.07
2.759ThrThr: 2.759 ± 0.081
3.631ThrVal: 3.631 ± 0.102
0.303ThrTrp: 0.303 ± 0.021
1.913ThrTyr: 1.913 ± 0.054
0.0ThrXaa: 0.0 ± 0.0
Val
4.16ValAla: 4.16 ± 0.087
0.801ValCys: 0.801 ± 0.036
3.902ValAsp: 3.902 ± 0.072
4.921ValGlu: 4.921 ± 0.089
2.781ValPhe: 2.781 ± 0.064
4.255ValGly: 4.255 ± 0.088
0.858ValHis: 0.858 ± 0.038
6.515ValIle: 6.515 ± 0.109
5.64ValLys: 5.64 ± 0.085
6.148ValLeu: 6.148 ± 0.109
1.717ValMet: 1.717 ± 0.051
4.004ValAsn: 4.004 ± 0.076
1.89ValPro: 1.89 ± 0.056
1.404ValGln: 1.404 ± 0.044
2.144ValArg: 2.144 ± 0.07
4.362ValSer: 4.362 ± 0.087
3.474ValThr: 3.474 ± 0.076
4.805ValVal: 4.805 ± 0.091
0.337ValTrp: 0.337 ± 0.022
2.525ValTyr: 2.525 ± 0.068
0.0ValXaa: 0.0 ± 0.0
Trp
0.328TrpAla: 0.328 ± 0.025
0.084TrpCys: 0.084 ± 0.011
0.348TrpAsp: 0.348 ± 0.023
0.38TrpGlu: 0.38 ± 0.02
0.275TrpPhe: 0.275 ± 0.021
0.435TrpGly: 0.435 ± 0.029
0.118TrpHis: 0.118 ± 0.013
0.655TrpIle: 0.655 ± 0.035
0.417TrpLys: 0.417 ± 0.027
0.536TrpLeu: 0.536 ± 0.028
0.176TrpMet: 0.176 ± 0.015
0.43TrpAsn: 0.43 ± 0.024
0.147TrpPro: 0.147 ± 0.016
0.193TrpGln: 0.193 ± 0.018
0.238TrpArg: 0.238 ± 0.018
0.392TrpSer: 0.392 ± 0.022
0.295TrpThr: 0.295 ± 0.02
0.337TrpVal: 0.337 ± 0.025
0.067TrpTrp: 0.067 ± 0.009
0.264TrpTyr: 0.264 ± 0.019
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.056TyrAla: 2.056 ± 0.05
0.544TyrCys: 0.544 ± 0.033
2.631TyrAsp: 2.631 ± 0.069
3.084TyrGlu: 3.084 ± 0.064
1.961TyrPhe: 1.961 ± 0.054
2.67TyrGly: 2.67 ± 0.057
0.566TyrHis: 0.566 ± 0.028
4.257TyrIle: 4.257 ± 0.084
3.736TyrLys: 3.736 ± 0.081
3.824TyrLeu: 3.824 ± 0.079
1.034TyrMet: 1.034 ± 0.037
2.984TyrAsn: 2.984 ± 0.075
1.192TyrPro: 1.192 ± 0.047
0.818TyrGln: 0.818 ± 0.035
1.484TyrArg: 1.484 ± 0.047
2.841TyrSer: 2.841 ± 0.062
2.14TyrThr: 2.14 ± 0.06
2.466TyrVal: 2.466 ± 0.057
0.277TyrTrp: 0.277 ± 0.019
1.925TyrTyr: 1.925 ± 0.066
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 2325 proteins (726272 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