Amino acid dipepetide frequency for Spiroplasma helicoides

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
3.353AlaAla: 3.353 ± 0.151
0.574AlaCys: 0.574 ± 0.035
2.353AlaAsp: 2.353 ± 0.08
2.621AlaGlu: 2.621 ± 0.096
2.401AlaPhe: 2.401 ± 0.092
2.833AlaGly: 2.833 ± 0.103
0.66AlaHis: 0.66 ± 0.04
4.956AlaIle: 4.956 ± 0.121
5.466AlaLys: 5.466 ± 0.13
4.559AlaLeu: 4.559 ± 0.105
1.084AlaMet: 1.084 ± 0.058
3.283AlaAsn: 3.283 ± 0.088
1.271AlaPro: 1.271 ± 0.064
1.582AlaGln: 1.582 ± 0.064
1.627AlaArg: 1.627 ± 0.08
3.546AlaSer: 3.546 ± 0.121
3.096AlaThr: 3.096 ± 0.131
3.012AlaVal: 3.012 ± 0.106
0.43AlaTrp: 0.43 ± 0.034
1.865AlaTyr: 1.865 ± 0.075
0.0AlaXaa: 0.0 ± 0.0
Cys
0.382CysAla: 0.382 ± 0.035
0.121CysCys: 0.121 ± 0.018
0.44CysAsp: 0.44 ± 0.032
0.46CysGlu: 0.46 ± 0.039
0.488CysPhe: 0.488 ± 0.03
0.49CysGly: 0.49 ± 0.036
0.119CysHis: 0.119 ± 0.019
0.687CysIle: 0.687 ± 0.038
0.596CysLys: 0.596 ± 0.039
0.814CysLeu: 0.814 ± 0.045
0.126CysMet: 0.126 ± 0.018
0.493CysAsn: 0.493 ± 0.038
0.225CysPro: 0.225 ± 0.028
0.24CysGln: 0.24 ± 0.024
0.126CysArg: 0.126 ± 0.017
0.528CysSer: 0.528 ± 0.041
0.278CysThr: 0.278 ± 0.025
0.422CysVal: 0.422 ± 0.035
0.091CysTrp: 0.091 ± 0.016
0.371CysTyr: 0.371 ± 0.028
0.0CysXaa: 0.0 ± 0.0
Asp
2.58AspAla: 2.58 ± 0.098
0.397AspCys: 0.397 ± 0.031
3.359AspAsp: 3.359 ± 0.11
4.261AspGlu: 4.261 ± 0.122
3.932AspPhe: 3.932 ± 0.113
2.856AspGly: 2.856 ± 0.105
0.71AspHis: 0.71 ± 0.046
5.292AspIle: 5.292 ± 0.141
5.888AspLys: 5.888 ± 0.131
6.128AspLeu: 6.128 ± 0.124
1.135AspMet: 1.135 ± 0.053
3.733AspAsn: 3.733 ± 0.1
1.4AspPro: 1.4 ± 0.058
1.842AspGln: 1.842 ± 0.078
1.478AspArg: 1.478 ± 0.072
3.642AspSer: 3.642 ± 0.123
2.363AspThr: 2.363 ± 0.086
3.583AspVal: 3.583 ± 0.103
0.743AspTrp: 0.743 ± 0.051
3.212AspTyr: 3.212 ± 0.102
0.0AspXaa: 0.0 ± 0.0
Glu
3.328GluAla: 3.328 ± 0.113
0.359GluCys: 0.359 ± 0.03
3.649GluAsp: 3.649 ± 0.106
5.054GluGlu: 5.054 ± 0.152
3.257GluPhe: 3.257 ± 0.116
2.699GluGly: 2.699 ± 0.094
0.786GluHis: 0.786 ± 0.042
6.747GluIle: 6.747 ± 0.145
7.67GluLys: 7.67 ± 0.161
6.33GluLeu: 6.33 ± 0.148
1.499GluMet: 1.499 ± 0.056
5.658GluAsn: 5.658 ± 0.148
1.365GluPro: 1.365 ± 0.06
2.466GluGln: 2.466 ± 0.075
1.744GluArg: 1.744 ± 0.073
3.955GluSer: 3.955 ± 0.092
2.926GluThr: 2.926 ± 0.08
4.079GluVal: 4.079 ± 0.102
0.672GluTrp: 0.672 ± 0.042
2.742GluTyr: 2.742 ± 0.08
0.0GluXaa: 0.0 ± 0.0
Phe
2.752PheAla: 2.752 ± 0.086
0.48PheCys: 0.48 ± 0.036
3.733PheAsp: 3.733 ± 0.11
3.841PheGlu: 3.841 ± 0.118
2.808PhePhe: 2.808 ± 0.094
2.861PheGly: 2.861 ± 0.098
0.46PheHis: 0.46 ± 0.037
5.052PheIle: 5.052 ± 0.132
5.183PheLys: 5.183 ± 0.129
5.375PheLeu: 5.375 ± 0.149
1.135PheMet: 1.135 ± 0.055
3.669PheAsn: 3.669 ± 0.12
0.902PhePro: 0.902 ± 0.052
1.221PheGln: 1.221 ± 0.058
1.261PheArg: 1.261 ± 0.057
4.225PheSer: 4.225 ± 0.097
2.861PheThr: 2.861 ± 0.097
3.343PheVal: 3.343 ± 0.096
0.516PheTrp: 0.516 ± 0.04
2.555PheTyr: 2.555 ± 0.093
0.0PheXaa: 0.0 ± 0.0
Gly
2.969GlyAla: 2.969 ± 0.101
0.394GlyCys: 0.394 ± 0.033
2.691GlyAsp: 2.691 ± 0.096
3.002GlyGlu: 3.002 ± 0.091
2.828GlyPhe: 2.828 ± 0.105
2.861GlyGly: 2.861 ± 0.119
0.756GlyHis: 0.756 ± 0.043
4.713GlyIle: 4.713 ± 0.128
4.147GlyLys: 4.147 ± 0.109
4.599GlyLeu: 4.599 ± 0.113
1.258GlyMet: 1.258 ± 0.054
2.709GlyAsn: 2.709 ± 0.086
1.074GlyPro: 1.074 ± 0.054
1.448GlyGln: 1.448 ± 0.059
1.521GlyArg: 1.521 ± 0.062
3.717GlySer: 3.717 ± 0.111
2.646GlyThr: 2.646 ± 0.09
3.71GlyVal: 3.71 ± 0.106
0.622GlyTrp: 0.622 ± 0.04
2.388GlyTyr: 2.388 ± 0.097
0.0GlyXaa: 0.0 ± 0.0
His
0.526HisAla: 0.526 ± 0.038
0.104HisCys: 0.104 ± 0.019
0.576HisAsp: 0.576 ± 0.036
0.67HisGlu: 0.67 ± 0.044
0.74HisPhe: 0.74 ± 0.04
0.733HisGly: 0.733 ± 0.047
0.207HisHis: 0.207 ± 0.023
1.223HisIle: 1.223 ± 0.049
1.188HisLys: 1.188 ± 0.054
1.198HisLeu: 1.198 ± 0.054
0.238HisMet: 0.238 ± 0.026
0.882HisAsn: 0.882 ± 0.053
0.457HisPro: 0.457 ± 0.033
0.374HisGln: 0.374 ± 0.033
0.361HisArg: 0.361 ± 0.028
0.756HisSer: 0.756 ± 0.047
0.518HisThr: 0.518 ± 0.034
0.612HisVal: 0.612 ± 0.036
0.119HisTrp: 0.119 ± 0.018
0.629HisTyr: 0.629 ± 0.041
0.0HisXaa: 0.0 ± 0.0
Ile
5.019IleAla: 5.019 ± 0.13
0.887IleCys: 0.887 ± 0.052
6.227IleAsp: 6.227 ± 0.156
6.179IleGlu: 6.179 ± 0.131
4.946IlePhe: 4.946 ± 0.142
4.587IleGly: 4.587 ± 0.129
1.049IleHis: 1.049 ± 0.053
8.835IleIle: 8.835 ± 0.188
9.828IleLys: 9.828 ± 0.196
8.476IleLeu: 8.476 ± 0.162
1.908IleMet: 1.908 ± 0.068
7.536IleAsn: 7.536 ± 0.142
2.3IlePro: 2.3 ± 0.071
2.482IleGln: 2.482 ± 0.076
2.494IleArg: 2.494 ± 0.097
6.98IleSer: 6.98 ± 0.139
4.655IleThr: 4.655 ± 0.113
5.489IleVal: 5.489 ± 0.117
0.768IleTrp: 0.768 ± 0.05
4.048IleTyr: 4.048 ± 0.114
0.0IleXaa: 0.0 ± 0.0
Lys
4.953LysAla: 4.953 ± 0.142
0.473LysCys: 0.473 ± 0.032
6.383LysAsp: 6.383 ± 0.138
8.122LysGlu: 8.122 ± 0.178
4.483LysPhe: 4.483 ± 0.11
4.144LysGly: 4.144 ± 0.105
1.253LysHis: 1.253 ± 0.062
9.555LysIle: 9.555 ± 0.197
11.091LysLys: 11.091 ± 0.209
8.198LysLeu: 8.198 ± 0.152
2.469LysMet: 2.469 ± 0.07
9.163LysAsn: 9.163 ± 0.178
2.32LysPro: 2.32 ± 0.084
3.439LysGln: 3.439 ± 0.096
2.901LysArg: 2.901 ± 0.1
6.252LysSer: 6.252 ± 0.125
5.292LysThr: 5.292 ± 0.124
6.333LysVal: 6.333 ± 0.136
0.902LysTrp: 0.902 ± 0.051
4.647LysTyr: 4.647 ± 0.113
0.0LysXaa: 0.0 ± 0.0
Leu
4.817LeuAla: 4.817 ± 0.133
0.634LeuCys: 0.634 ± 0.039
5.269LeuAsp: 5.269 ± 0.105
6.409LeuGlu: 6.409 ± 0.17
4.973LeuPhe: 4.973 ± 0.149
4.609LeuGly: 4.609 ± 0.108
1.061LeuHis: 1.061 ± 0.05
8.291LeuIle: 8.291 ± 0.184
9.752LeuLys: 9.752 ± 0.158
8.112LeuLeu: 8.112 ± 0.205
1.964LeuMet: 1.964 ± 0.071
7.068LeuAsn: 7.068 ± 0.136
2.37LeuPro: 2.37 ± 0.08
2.317LeuGln: 2.317 ± 0.081
2.439LeuArg: 2.439 ± 0.079
6.77LeuSer: 6.77 ± 0.161
4.842LeuThr: 4.842 ± 0.123
5.598LeuVal: 5.598 ± 0.129
0.71LeuTrp: 0.71 ± 0.046
3.336LeuTyr: 3.336 ± 0.102
0.0LeuXaa: 0.0 ± 0.0
Met
1.4MetAla: 1.4 ± 0.062
0.192MetCys: 0.192 ± 0.022
1.084MetAsp: 1.084 ± 0.063
1.145MetGlu: 1.145 ± 0.059
1.17MetPhe: 1.17 ± 0.06
1.312MetGly: 1.312 ± 0.066
0.311MetHis: 0.311 ± 0.029
1.981MetIle: 1.981 ± 0.081
2.254MetLys: 2.254 ± 0.073
1.723MetLeu: 1.723 ± 0.072
0.427MetMet: 0.427 ± 0.034
1.511MetAsn: 1.511 ± 0.065
0.642MetPro: 0.642 ± 0.046
0.725MetGln: 0.725 ± 0.045
0.579MetArg: 0.579 ± 0.041
1.638MetSer: 1.638 ± 0.071
0.998MetThr: 0.998 ± 0.061
1.157MetVal: 1.157 ± 0.058
0.174MetTrp: 0.174 ± 0.021
0.882MetTyr: 0.882 ± 0.051
0.0MetXaa: 0.0 ± 0.0
Asn
2.911AsnAla: 2.911 ± 0.093
0.558AsnCys: 0.558 ± 0.038
4.311AsnAsp: 4.311 ± 0.128
4.923AsnGlu: 4.923 ± 0.126
4.372AsnPhe: 4.372 ± 0.133
3.321AsnGly: 3.321 ± 0.102
0.953AsnHis: 0.953 ± 0.052
7.131AsnIle: 7.131 ± 0.164
8.302AsnLys: 8.302 ± 0.191
6.773AsnLeu: 6.773 ± 0.159
1.365AsnMet: 1.365 ± 0.057
6.065AsnAsn: 6.065 ± 0.17
2.158AsnPro: 2.158 ± 0.067
2.532AsnGln: 2.532 ± 0.099
1.865AsnArg: 1.865 ± 0.068
5.145AsnSer: 5.145 ± 0.12
3.121AsnThr: 3.121 ± 0.089
3.821AsnVal: 3.821 ± 0.109
0.771AsnTrp: 0.771 ± 0.039
3.993AsnTyr: 3.993 ± 0.112
0.0AsnXaa: 0.0 ± 0.0
Pro
1.084ProAla: 1.084 ± 0.059
0.124ProCys: 0.124 ± 0.018
1.322ProAsp: 1.322 ± 0.063
1.779ProGlu: 1.779 ± 0.082
1.317ProPhe: 1.317 ± 0.063
1.377ProGly: 1.377 ± 0.062
0.334ProHis: 0.334 ± 0.032
2.388ProIle: 2.388 ± 0.082
2.156ProLys: 2.156 ± 0.073
2.039ProLeu: 2.039 ± 0.071
0.536ProMet: 0.536 ± 0.043
1.777ProAsn: 1.777 ± 0.065
0.548ProPro: 0.548 ± 0.041
0.728ProGln: 0.728 ± 0.058
0.622ProArg: 0.622 ± 0.039
1.701ProSer: 1.701 ± 0.061
1.542ProThr: 1.542 ± 0.069
1.516ProVal: 1.516 ± 0.063
0.25ProTrp: 0.25 ± 0.029
0.993ProTyr: 0.993 ± 0.052
0.0ProXaa: 0.0 ± 0.0
Gln
1.445GlnAla: 1.445 ± 0.064
0.121GlnCys: 0.121 ± 0.014
1.635GlnAsp: 1.635 ± 0.068
2.143GlnGlu: 2.143 ± 0.079
1.344GlnPhe: 1.344 ± 0.056
1.329GlnGly: 1.329 ± 0.068
0.301GlnHis: 0.301 ± 0.026
3.053GlnIle: 3.053 ± 0.104
3.513GlnLys: 3.513 ± 0.105
2.717GlnLeu: 2.717 ± 0.089
0.642GlnMet: 0.642 ± 0.043
2.55GlnAsn: 2.55 ± 0.114
0.713GlnPro: 0.713 ± 0.052
1.15GlnGln: 1.15 ± 0.083
0.988GlnArg: 0.988 ± 0.05
1.837GlnSer: 1.837 ± 0.064
1.481GlnThr: 1.481 ± 0.064
1.749GlnVal: 1.749 ± 0.064
0.298GlnTrp: 0.298 ± 0.027
1.221GlnTyr: 1.221 ± 0.058
0.0GlnXaa: 0.0 ± 0.0
Arg
1.322ArgAla: 1.322 ± 0.052
0.162ArgCys: 0.162 ± 0.019
1.686ArgAsp: 1.686 ± 0.064
1.903ArgGlu: 1.903 ± 0.091
1.476ArgPhe: 1.476 ± 0.066
1.385ArgGly: 1.385 ± 0.07
0.435ArgHis: 0.435 ± 0.032
2.588ArgIle: 2.588 ± 0.091
2.618ArgLys: 2.618 ± 0.083
2.3ArgLeu: 2.3 ± 0.086
0.682ArgMet: 0.682 ± 0.043
1.984ArgAsn: 1.984 ± 0.075
0.74ArgPro: 0.74 ± 0.049
0.882ArgGln: 0.882 ± 0.052
1.031ArgArg: 1.031 ± 0.061
1.569ArgSer: 1.569 ± 0.072
1.367ArgThr: 1.367 ± 0.063
1.764ArgVal: 1.764 ± 0.07
0.265ArgTrp: 0.265 ± 0.029
1.195ArgTyr: 1.195 ± 0.053
0.0ArgXaa: 0.0 ± 0.0
Ser
3.159SerAla: 3.159 ± 0.11
0.591SerCys: 0.591 ± 0.041
3.935SerAsp: 3.935 ± 0.112
4.213SerGlu: 4.213 ± 0.106
4.094SerPhe: 4.094 ± 0.095
3.654SerGly: 3.654 ± 0.105
0.801SerHis: 0.801 ± 0.05
6.805SerIle: 6.805 ± 0.139
6.927SerLys: 6.927 ± 0.139
6.618SerLeu: 6.618 ± 0.144
1.466SerMet: 1.466 ± 0.063
4.647SerAsn: 4.647 ± 0.111
1.463SerPro: 1.463 ± 0.059
2.186SerGln: 2.186 ± 0.08
1.89SerArg: 1.89 ± 0.08
5.524SerSer: 5.524 ± 0.151
3.546SerThr: 3.546 ± 0.101
3.899SerVal: 3.899 ± 0.109
0.788SerTrp: 0.788 ± 0.049
3.217SerTyr: 3.217 ± 0.091
0.0SerXaa: 0.0 ± 0.0
Thr
2.573ThrAla: 2.573 ± 0.087
0.311ThrCys: 0.311 ± 0.028
2.552ThrAsp: 2.552 ± 0.085
2.552ThrGlu: 2.552 ± 0.081
2.947ThrPhe: 2.947 ± 0.094
3.017ThrGly: 3.017 ± 0.103
0.652ThrHis: 0.652 ± 0.04
5.148ThrIle: 5.148 ± 0.127
4.819ThrLys: 4.819 ± 0.11
4.665ThrLeu: 4.665 ± 0.123
0.943ThrMet: 0.943 ± 0.056
3.712ThrAsn: 3.712 ± 0.092
1.542ThrPro: 1.542 ± 0.071
1.438ThrGln: 1.438 ± 0.061
1.324ThrArg: 1.324 ± 0.061
3.664ThrSer: 3.664 ± 0.098
3.022ThrThr: 3.022 ± 0.086
2.944ThrVal: 2.944 ± 0.096
0.369ThrTrp: 0.369 ± 0.031
2.264ThrTyr: 2.264 ± 0.085
0.0ThrXaa: 0.0 ± 0.0
Val
3.485ValAla: 3.485 ± 0.125
0.538ValCys: 0.538 ± 0.037
4.005ValAsp: 4.005 ± 0.105
4.276ValGlu: 4.276 ± 0.114
3.346ValPhe: 3.346 ± 0.103
3.283ValGly: 3.283 ± 0.106
0.667ValHis: 0.667 ± 0.04
5.451ValIle: 5.451 ± 0.12
5.469ValLys: 5.469 ± 0.123
5.423ValLeu: 5.423 ± 0.136
1.322ValMet: 1.322 ± 0.066
3.803ValAsn: 3.803 ± 0.101
1.504ValPro: 1.504 ± 0.065
1.524ValGln: 1.524 ± 0.067
1.584ValArg: 1.584 ± 0.067
4.248ValSer: 4.248 ± 0.098
3.212ValThr: 3.212 ± 0.099
4.056ValVal: 4.056 ± 0.102
0.536ValTrp: 0.536 ± 0.036
2.418ValTyr: 2.418 ± 0.085
0.0ValXaa: 0.0 ± 0.0
Trp
0.478TrpAla: 0.478 ± 0.034
0.096TrpCys: 0.096 ± 0.016
0.536TrpAsp: 0.536 ± 0.038
0.599TrpGlu: 0.599 ± 0.036
0.642TrpPhe: 0.642 ± 0.046
0.455TrpGly: 0.455 ± 0.033
0.099TrpHis: 0.099 ± 0.015
0.912TrpIle: 0.912 ± 0.056
0.854TrpLys: 0.854 ± 0.043
0.915TrpLeu: 0.915 ± 0.048
0.311TrpMet: 0.311 ± 0.027
0.705TrpAsn: 0.705 ± 0.049
0.172TrpPro: 0.172 ± 0.018
0.268TrpGln: 0.268 ± 0.025
0.263TrpArg: 0.263 ± 0.025
0.647TrpSer: 0.647 ± 0.043
0.498TrpThr: 0.498 ± 0.039
0.637TrpVal: 0.637 ± 0.043
0.192TrpTrp: 0.192 ± 0.023
0.427TrpTyr: 0.427 ± 0.035
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.034TyrAla: 2.034 ± 0.077
0.382TyrCys: 0.382 ± 0.035
2.787TyrAsp: 2.787 ± 0.099
2.835TyrGlu: 2.835 ± 0.082
2.669TyrPhe: 2.669 ± 0.094
2.249TyrGly: 2.249 ± 0.069
0.498TyrHis: 0.498 ± 0.046
3.882TyrIle: 3.882 ± 0.112
4.655TyrLys: 4.655 ± 0.12
4.379TyrLeu: 4.379 ± 0.111
0.796TyrMet: 0.796 ± 0.042
3.444TyrAsn: 3.444 ± 0.09
0.965TyrPro: 0.965 ± 0.047
1.385TyrGln: 1.385 ± 0.06
1.253TyrArg: 1.253 ± 0.057
3.081TyrSer: 3.081 ± 0.089
2.196TyrThr: 2.196 ± 0.082
2.426TyrVal: 2.426 ± 0.078
0.488TyrTrp: 0.488 ± 0.039
2.06TyrTyr: 2.06 ± 0.08
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 1144 proteins (395712 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