Amino acid dipepetide frequency for Gemella sp. WT2a

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
4.542AlaAla: 4.542 ± 0.18
0.461AlaCys: 0.461 ± 0.03
3.16AlaAsp: 3.16 ± 0.099
3.871AlaGlu: 3.871 ± 0.123
2.548AlaPhe: 2.548 ± 0.09
4.42AlaGly: 4.42 ± 0.127
1.001AlaHis: 1.001 ± 0.047
5.947AlaIle: 5.947 ± 0.128
5.362AlaLys: 5.362 ± 0.147
6.05AlaLeu: 6.05 ± 0.131
1.593AlaMet: 1.593 ± 0.07
3.275AlaAsn: 3.275 ± 0.093
1.657AlaPro: 1.657 ± 0.12
1.687AlaGln: 1.687 ± 0.069
2.402AlaArg: 2.402 ± 0.076
4.038AlaSer: 4.038 ± 0.104
3.474AlaThr: 3.474 ± 0.127
4.129AlaVal: 4.129 ± 0.127
0.41AlaTrp: 0.41 ± 0.036
2.626AlaTyr: 2.626 ± 0.091
0.0AlaXaa: 0.0 ± 0.0
Cys
0.339CysAla: 0.339 ± 0.026
0.062CysCys: 0.062 ± 0.011
0.376CysAsp: 0.376 ± 0.032
0.399CysGlu: 0.399 ± 0.03
0.202CysPhe: 0.202 ± 0.02
0.518CysGly: 0.518 ± 0.033
0.142CysHis: 0.142 ± 0.019
0.495CysIle: 0.495 ± 0.034
0.479CysLys: 0.479 ± 0.031
0.532CysLeu: 0.532 ± 0.034
0.142CysMet: 0.142 ± 0.021
0.309CysAsn: 0.309 ± 0.028
0.247CysPro: 0.247 ± 0.027
0.151CysGln: 0.151 ± 0.019
0.231CysArg: 0.231 ± 0.024
0.454CysSer: 0.454 ± 0.033
0.284CysThr: 0.284 ± 0.023
0.364CysVal: 0.364 ± 0.025
0.032CysTrp: 0.032 ± 0.009
0.213CysTyr: 0.213 ± 0.019
0.0CysXaa: 0.0 ± 0.0
Asp
3.009AspAla: 3.009 ± 0.098
0.351AspCys: 0.351 ± 0.03
2.658AspAsp: 2.658 ± 0.087
4.214AspGlu: 4.214 ± 0.121
3.101AspPhe: 3.101 ± 0.087
3.178AspGly: 3.178 ± 0.1
0.655AspHis: 0.655 ± 0.033
5.53AspIle: 5.53 ± 0.119
5.39AspLys: 5.39 ± 0.124
5.454AspLeu: 5.454 ± 0.123
1.297AspMet: 1.297 ± 0.057
3.066AspAsn: 3.066 ± 0.081
1.451AspPro: 1.451 ± 0.064
1.137AspGln: 1.137 ± 0.049
2.117AspArg: 2.117 ± 0.072
3.314AspSer: 3.314 ± 0.095
2.638AspThr: 2.638 ± 0.08
3.449AspVal: 3.449 ± 0.092
0.424AspTrp: 0.424 ± 0.031
3.011AspTyr: 3.011 ± 0.084
0.0AspXaa: 0.0 ± 0.0
Glu
4.237GluAla: 4.237 ± 0.12
0.364GluCys: 0.364 ± 0.028
4.384GluAsp: 4.384 ± 0.133
7.615GluGlu: 7.615 ± 0.196
3.013GluPhe: 3.013 ± 0.086
3.396GluGly: 3.396 ± 0.099
1.091GluHis: 1.091 ± 0.048
6.84GluIle: 6.84 ± 0.166
8.211GluLys: 8.211 ± 0.195
7.459GluLeu: 7.459 ± 0.149
1.854GluMet: 1.854 ± 0.068
5.337GluAsn: 5.337 ± 0.136
1.189GluPro: 1.189 ± 0.061
2.097GluGln: 2.097 ± 0.068
2.913GluArg: 2.913 ± 0.111
3.806GluSer: 3.806 ± 0.09
3.376GluThr: 3.376 ± 0.1
5.337GluVal: 5.337 ± 0.134
0.47GluTrp: 0.47 ± 0.033
3.27GluTyr: 3.27 ± 0.088
0.0GluXaa: 0.0 ± 0.0
Phe
2.7PheAla: 2.7 ± 0.106
0.268PheCys: 0.268 ± 0.025
2.798PheAsp: 2.798 ± 0.087
3.027PheGlu: 3.027 ± 0.092
2.056PhePhe: 2.056 ± 0.092
2.796PheGly: 2.796 ± 0.085
0.577PheHis: 0.577 ± 0.037
4.15PheIle: 4.15 ± 0.13
3.634PheLys: 3.634 ± 0.1
4.372PheLeu: 4.372 ± 0.131
1.043PheMet: 1.043 ± 0.054
2.505PheAsn: 2.505 ± 0.074
1.13PhePro: 1.13 ± 0.056
1.029PheGln: 1.029 ± 0.048
1.393PheArg: 1.393 ± 0.063
3.55PheSer: 3.55 ± 0.092
2.477PheThr: 2.477 ± 0.077
2.903PheVal: 2.903 ± 0.093
0.289PheTrp: 0.289 ± 0.027
1.957PheTyr: 1.957 ± 0.083
0.0PheXaa: 0.0 ± 0.0
Gly
4.095GlyAla: 4.095 ± 0.119
0.374GlyCys: 0.374 ± 0.028
3.0GlyAsp: 3.0 ± 0.095
3.758GlyGlu: 3.758 ± 0.096
2.871GlyPhe: 2.871 ± 0.085
3.96GlyGly: 3.96 ± 0.108
1.127GlyHis: 1.127 ± 0.054
5.385GlyIle: 5.385 ± 0.109
4.993GlyLys: 4.993 ± 0.117
5.867GlyLeu: 5.867 ± 0.144
1.561GlyMet: 1.561 ± 0.063
2.702GlyAsn: 2.702 ± 0.082
1.201GlyPro: 1.201 ± 0.054
1.957GlyGln: 1.957 ± 0.069
2.214GlyArg: 2.214 ± 0.09
3.497GlySer: 3.497 ± 0.111
3.117GlyThr: 3.117 ± 0.088
4.343GlyVal: 4.343 ± 0.111
0.417GlyTrp: 0.417 ± 0.031
2.672GlyTyr: 2.672 ± 0.087
0.0GlyXaa: 0.0 ± 0.0
His
0.917HisAla: 0.917 ± 0.046
0.131HisCys: 0.131 ± 0.021
0.759HisAsp: 0.759 ± 0.042
0.946HisGlu: 0.946 ± 0.047
0.642HisPhe: 0.642 ± 0.039
0.969HisGly: 0.969 ± 0.057
0.337HisHis: 0.337 ± 0.03
1.494HisIle: 1.494 ± 0.053
1.164HisLys: 1.164 ± 0.051
1.501HisLeu: 1.501 ± 0.057
0.344HisMet: 0.344 ± 0.028
0.852HisAsn: 0.852 ± 0.05
0.639HisPro: 0.639 ± 0.044
0.41HisGln: 0.41 ± 0.031
0.683HisArg: 0.683 ± 0.041
0.907HisSer: 0.907 ± 0.045
0.823HisThr: 0.823 ± 0.046
0.834HisVal: 0.834 ± 0.05
0.105HisTrp: 0.105 ± 0.017
0.704HisTyr: 0.704 ± 0.04
0.0HisXaa: 0.0 ± 0.0
Ile
6.096IleAla: 6.096 ± 0.145
0.646IleCys: 0.646 ± 0.039
5.633IleAsp: 5.633 ± 0.119
6.856IleGlu: 6.856 ± 0.145
4.283IlePhe: 4.283 ± 0.125
5.046IleGly: 5.046 ± 0.117
1.325IleHis: 1.325 ± 0.052
7.947IleIle: 7.947 ± 0.205
7.686IleLys: 7.686 ± 0.167
8.962IleLeu: 8.962 ± 0.217
1.888IleMet: 1.888 ± 0.064
5.284IleAsn: 5.284 ± 0.125
2.736IlePro: 2.736 ± 0.082
2.248IleGln: 2.248 ± 0.073
2.894IleArg: 2.894 ± 0.082
6.74IleSer: 6.74 ± 0.144
4.366IleThr: 4.366 ± 0.098
6.135IleVal: 6.135 ± 0.12
0.481IleTrp: 0.481 ± 0.039
3.547IleTyr: 3.547 ± 0.107
0.0IleXaa: 0.0 ± 0.0
Lys
4.831LysAla: 4.831 ± 0.126
0.353LysCys: 0.353 ± 0.027
5.491LysAsp: 5.491 ± 0.113
8.94LysGlu: 8.94 ± 0.167
3.405LysPhe: 3.405 ± 0.088
4.159LysGly: 4.159 ± 0.089
1.297LysHis: 1.297 ± 0.055
7.991LysIle: 7.991 ± 0.158
8.445LysLys: 8.445 ± 0.161
8.179LysLeu: 8.179 ± 0.143
2.285LysMet: 2.285 ± 0.072
6.015LysAsn: 6.015 ± 0.126
1.776LysPro: 1.776 ± 0.088
2.518LysGln: 2.518 ± 0.069
2.984LysArg: 2.984 ± 0.09
5.22LysSer: 5.22 ± 0.126
4.304LysThr: 4.304 ± 0.128
5.949LysVal: 5.949 ± 0.141
0.49LysTrp: 0.49 ± 0.032
4.155LysTyr: 4.155 ± 0.112
0.0LysXaa: 0.0 ± 0.0
Leu
7.042LeuAla: 7.042 ± 0.151
0.52LeuCys: 0.52 ± 0.033
5.795LeuAsp: 5.795 ± 0.116
7.851LeuGlu: 7.851 ± 0.159
3.946LeuPhe: 3.946 ± 0.127
6.21LeuGly: 6.21 ± 0.144
1.313LeuHis: 1.313 ± 0.062
7.95LeuIle: 7.95 ± 0.173
7.805LeuLys: 7.805 ± 0.155
9.331LeuLeu: 9.331 ± 0.199
2.225LeuMet: 2.225 ± 0.079
5.25LeuAsn: 5.25 ± 0.115
3.0LeuPro: 3.0 ± 0.092
2.466LeuGln: 2.466 ± 0.079
3.227LeuArg: 3.227 ± 0.092
7.246LeuSer: 7.246 ± 0.141
5.009LeuThr: 5.009 ± 0.109
6.63LeuVal: 6.63 ± 0.142
0.564LeuTrp: 0.564 ± 0.036
3.288LeuTyr: 3.288 ± 0.096
0.0LeuXaa: 0.0 ± 0.0
Met
1.62MetAla: 1.62 ± 0.071
0.117MetCys: 0.117 ± 0.016
1.199MetAsp: 1.199 ± 0.047
1.428MetGlu: 1.428 ± 0.058
1.011MetPhe: 1.011 ± 0.05
1.421MetGly: 1.421 ± 0.07
0.367MetHis: 0.367 ± 0.03
2.033MetIle: 2.033 ± 0.077
2.344MetLys: 2.344 ± 0.066
2.335MetLeu: 2.335 ± 0.077
0.678MetMet: 0.678 ± 0.049
1.315MetAsn: 1.315 ± 0.049
0.699MetPro: 0.699 ± 0.044
0.759MetGln: 0.759 ± 0.037
0.816MetArg: 0.816 ± 0.043
1.593MetSer: 1.593 ± 0.071
1.545MetThr: 1.545 ± 0.063
1.391MetVal: 1.391 ± 0.061
0.119MetTrp: 0.119 ± 0.017
0.88MetTyr: 0.88 ± 0.05
0.0MetXaa: 0.0 ± 0.0
Asn
2.839AsnAla: 2.839 ± 0.098
0.264AsnCys: 0.264 ± 0.024
2.667AsnAsp: 2.667 ± 0.077
3.813AsnGlu: 3.813 ± 0.103
2.706AsnPhe: 2.706 ± 0.091
2.897AsnGly: 2.897 ± 0.089
0.882AsnHis: 0.882 ± 0.043
6.313AsnIle: 6.313 ± 0.153
5.779AsnLys: 5.779 ± 0.144
5.722AsnLeu: 5.722 ± 0.113
1.357AsnMet: 1.357 ± 0.05
3.559AsnAsn: 3.559 ± 0.102
2.152AsnPro: 2.152 ± 0.076
1.655AsnGln: 1.655 ± 0.061
2.106AsnArg: 2.106 ± 0.084
3.586AsnSer: 3.586 ± 0.1
2.72AsnThr: 2.72 ± 0.104
3.298AsnVal: 3.298 ± 0.072
0.367AsnTrp: 0.367 ± 0.028
2.846AsnTyr: 2.846 ± 0.093
0.0AsnXaa: 0.0 ± 0.0
Pro
1.778ProAla: 1.778 ± 0.107
0.142ProCys: 0.142 ± 0.019
1.306ProAsp: 1.306 ± 0.048
2.113ProGlu: 2.113 ± 0.074
1.389ProPhe: 1.389 ± 0.059
1.51ProGly: 1.51 ± 0.072
0.472ProHis: 0.472 ± 0.034
2.484ProIle: 2.484 ± 0.075
2.264ProLys: 2.264 ± 0.09
2.402ProLeu: 2.402 ± 0.08
0.644ProMet: 0.644 ± 0.044
1.586ProAsn: 1.586 ± 0.063
0.47ProPro: 0.47 ± 0.03
0.77ProGln: 0.77 ± 0.057
0.841ProArg: 0.841 ± 0.046
1.643ProSer: 1.643 ± 0.068
1.579ProThr: 1.579 ± 0.062
2.012ProVal: 2.012 ± 0.095
0.186ProTrp: 0.186 ± 0.022
1.164ProTyr: 1.164 ± 0.058
0.0ProXaa: 0.0 ± 0.0
Gln
2.117GlnAla: 2.117 ± 0.083
0.103GlnCys: 0.103 ± 0.015
1.655GlnAsp: 1.655 ± 0.056
2.264GlnGlu: 2.264 ± 0.087
1.194GlnPhe: 1.194 ± 0.053
1.652GlnGly: 1.652 ± 0.068
0.417GlnHis: 0.417 ± 0.033
2.484GlnIle: 2.484 ± 0.079
2.253GlnLys: 2.253 ± 0.078
2.571GlnLeu: 2.571 ± 0.079
0.671GlnMet: 0.671 ± 0.038
1.469GlnAsn: 1.469 ± 0.057
0.66GlnPro: 0.66 ± 0.035
0.77GlnGln: 0.77 ± 0.044
0.949GlnArg: 0.949 ± 0.052
1.606GlnSer: 1.606 ± 0.063
1.558GlnThr: 1.558 ± 0.078
2.017GlnVal: 2.017 ± 0.063
0.204GlnTrp: 0.204 ± 0.022
1.054GlnTyr: 1.054 ± 0.04
0.0GlnXaa: 0.0 ± 0.0
Arg
1.973ArgAla: 1.973 ± 0.081
0.199ArgCys: 0.199 ± 0.022
1.966ArgAsp: 1.966 ± 0.076
3.036ArgGlu: 3.036 ± 0.094
1.48ArgPhe: 1.48 ± 0.066
2.04ArgGly: 2.04 ± 0.07
0.584ArgHis: 0.584 ± 0.04
3.174ArgIle: 3.174 ± 0.082
3.327ArgLys: 3.327 ± 0.094
3.431ArgLeu: 3.431 ± 0.093
0.91ArgMet: 0.91 ± 0.047
2.046ArgAsn: 2.046 ± 0.081
1.075ArgPro: 1.075 ± 0.052
1.251ArgGln: 1.251 ± 0.059
1.803ArgArg: 1.803 ± 0.07
1.941ArgSer: 1.941 ± 0.069
1.671ArgThr: 1.671 ± 0.063
2.379ArgVal: 2.379 ± 0.087
0.202ArgTrp: 0.202 ± 0.022
1.638ArgTyr: 1.638 ± 0.065
0.0ArgXaa: 0.0 ± 0.0
Ser
3.68SerAla: 3.68 ± 0.115
0.385SerCys: 0.385 ± 0.033
3.217SerAsp: 3.217 ± 0.098
4.398SerGlu: 4.398 ± 0.099
3.048SerPhe: 3.048 ± 0.088
4.235SerGly: 4.235 ± 0.118
1.075SerHis: 1.075 ± 0.048
5.958SerIle: 5.958 ± 0.137
6.073SerLys: 6.073 ± 0.126
6.494SerLeu: 6.494 ± 0.124
1.483SerMet: 1.483 ± 0.062
3.829SerAsn: 3.829 ± 0.106
1.719SerPro: 1.719 ± 0.068
2.111SerGln: 2.111 ± 0.082
2.331SerArg: 2.331 ± 0.077
4.544SerSer: 4.544 ± 0.107
3.552SerThr: 3.552 ± 0.118
3.864SerVal: 3.864 ± 0.09
0.456SerTrp: 0.456 ± 0.029
2.885SerTyr: 2.885 ± 0.085
0.0SerXaa: 0.0 ± 0.0
Thr
3.467ThrAla: 3.467 ± 0.129
0.33ThrCys: 0.33 ± 0.027
2.661ThrAsp: 2.661 ± 0.084
3.495ThrGlu: 3.495 ± 0.133
2.406ThrPhe: 2.406 ± 0.076
3.49ThrGly: 3.49 ± 0.089
0.852ThrHis: 0.852 ± 0.045
4.583ThrIle: 4.583 ± 0.105
4.024ThrLys: 4.024 ± 0.121
4.851ThrLeu: 4.851 ± 0.103
1.146ThrMet: 1.146 ± 0.06
2.713ThrAsn: 2.713 ± 0.091
1.723ThrPro: 1.723 ± 0.069
1.386ThrGln: 1.386 ± 0.065
1.808ThrArg: 1.808 ± 0.067
3.763ThrSer: 3.763 ± 0.14
3.451ThrThr: 3.451 ± 0.206
3.316ThrVal: 3.316 ± 0.093
0.38ThrTrp: 0.38 ± 0.031
2.34ThrTyr: 2.34 ± 0.073
0.0ThrXaa: 0.0 ± 0.0
Val
4.62ValAla: 4.62 ± 0.114
0.575ValCys: 0.575 ± 0.038
4.029ValAsp: 4.029 ± 0.101
4.975ValGlu: 4.975 ± 0.146
2.936ValPhe: 2.936 ± 0.088
4.212ValGly: 4.212 ± 0.112
0.926ValHis: 0.926 ± 0.049
5.527ValIle: 5.527 ± 0.112
5.39ValLys: 5.39 ± 0.136
6.128ValLeu: 6.128 ± 0.126
1.437ValMet: 1.437 ± 0.056
3.49ValAsn: 3.49 ± 0.085
1.865ValPro: 1.865 ± 0.069
1.579ValGln: 1.579 ± 0.063
2.379ValArg: 2.379 ± 0.092
4.526ValSer: 4.526 ± 0.119
3.722ValThr: 3.722 ± 0.1
4.732ValVal: 4.732 ± 0.124
0.426ValTrp: 0.426 ± 0.037
2.415ValTyr: 2.415 ± 0.071
0.0ValXaa: 0.0 ± 0.0
Trp
0.36TrpAla: 0.36 ± 0.027
0.037TrpCys: 0.037 ± 0.008
0.321TrpAsp: 0.321 ± 0.029
0.429TrpGlu: 0.429 ± 0.03
0.307TrpPhe: 0.307 ± 0.032
0.474TrpGly: 0.474 ± 0.039
0.112TrpHis: 0.112 ± 0.016
0.571TrpIle: 0.571 ± 0.039
0.461TrpLys: 0.461 ± 0.033
0.759TrpLeu: 0.759 ± 0.043
0.179TrpMet: 0.179 ± 0.019
0.362TrpAsn: 0.362 ± 0.027
0.154TrpPro: 0.154 ± 0.02
0.328TrpGln: 0.328 ± 0.028
0.252TrpArg: 0.252 ± 0.025
0.399TrpSer: 0.399 ± 0.03
0.284TrpThr: 0.284 ± 0.024
0.291TrpVal: 0.291 ± 0.028
0.082TrpTrp: 0.082 ± 0.015
0.27TrpTyr: 0.27 ± 0.026
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.39TyrAla: 2.39 ± 0.071
0.291TyrCys: 0.291 ± 0.03
2.37TyrAsp: 2.37 ± 0.082
2.832TyrGlu: 2.832 ± 0.088
2.111TyrPhe: 2.111 ± 0.08
2.525TyrGly: 2.525 ± 0.071
0.607TyrHis: 0.607 ± 0.039
3.946TyrIle: 3.946 ± 0.112
3.701TyrLys: 3.701 ± 0.113
4.269TyrLeu: 4.269 ± 0.121
0.93TyrMet: 0.93 ± 0.046
2.562TyrAsn: 2.562 ± 0.092
1.212TyrPro: 1.212 ± 0.055
1.361TyrGln: 1.361 ± 0.058
1.785TyrArg: 1.785 ± 0.065
2.963TyrSer: 2.963 ± 0.084
2.239TyrThr: 2.239 ± 0.073
2.516TyrVal: 2.516 ± 0.071
0.325TyrTrp: 0.325 ± 0.027
1.968TyrTyr: 1.968 ± 0.075
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 1666 proteins (436377 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