Amino acid dipepetide frequency for Lactococcus insecticola

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
7.521AlaAla: 7.521 ± 0.202
0.295AlaCys: 0.295 ± 0.028
5.798AlaAsp: 5.798 ± 0.164
5.63AlaGlu: 5.63 ± 0.125
3.339AlaPhe: 3.339 ± 0.09
6.079AlaGly: 6.079 ± 0.132
1.402AlaHis: 1.402 ± 0.052
6.293AlaIle: 6.293 ± 0.127
5.962AlaLys: 5.962 ± 0.131
7.514AlaLeu: 7.514 ± 0.147
2.061AlaMet: 2.061 ± 0.067
3.625AlaAsn: 3.625 ± 0.096
2.654AlaPro: 2.654 ± 0.085
3.472AlaGln: 3.472 ± 0.125
3.352AlaArg: 3.352 ± 0.099
5.186AlaSer: 5.186 ± 0.132
5.516AlaThr: 5.516 ± 0.167
6.189AlaVal: 6.189 ± 0.152
0.61AlaTrp: 0.61 ± 0.034
2.814AlaTyr: 2.814 ± 0.08
0.0AlaXaa: 0.0 ± 0.0
Cys
0.256CysAla: 0.256 ± 0.023
0.034CysCys: 0.034 ± 0.008
0.215CysAsp: 0.215 ± 0.02
0.186CysGlu: 0.186 ± 0.018
0.116CysPhe: 0.116 ± 0.016
0.365CysGly: 0.365 ± 0.03
0.089CysHis: 0.089 ± 0.014
0.135CysIle: 0.135 ± 0.018
0.137CysLys: 0.137 ± 0.016
0.28CysLeu: 0.28 ± 0.025
0.053CysMet: 0.053 ± 0.009
0.125CysAsn: 0.125 ± 0.015
0.166CysPro: 0.166 ± 0.018
0.135CysGln: 0.135 ± 0.017
0.111CysArg: 0.111 ± 0.016
0.2CysSer: 0.2 ± 0.023
0.143CysThr: 0.143 ± 0.016
0.202CysVal: 0.202 ± 0.022
0.031CysTrp: 0.031 ± 0.006
0.104CysTyr: 0.104 ± 0.013
0.0CysXaa: 0.0 ± 0.0
Asp
5.34AspAla: 5.34 ± 0.137
0.169AspCys: 0.169 ± 0.02
4.073AspAsp: 4.073 ± 0.113
5.017AspGlu: 5.017 ± 0.12
3.718AspPhe: 3.718 ± 0.082
4.266AspGly: 4.266 ± 0.107
0.965AspHis: 0.965 ± 0.044
4.435AspIle: 4.435 ± 0.094
4.809AspLys: 4.809 ± 0.098
6.004AspLeu: 6.004 ± 0.119
1.639AspMet: 1.639 ± 0.067
3.035AspAsn: 3.035 ± 0.094
1.682AspPro: 1.682 ± 0.07
1.781AspGln: 1.781 ± 0.061
1.96AspArg: 1.96 ± 0.062
5.974AspSer: 5.974 ± 1.822
3.479AspThr: 3.479 ± 0.092
4.886AspVal: 4.886 ± 0.087
0.651AspTrp: 0.651 ± 0.04
3.006AspTyr: 3.006 ± 0.076
0.0AspXaa: 0.0 ± 0.0
Glu
4.78GluAla: 4.78 ± 0.124
0.15GluCys: 0.15 ± 0.019
3.878GluAsp: 3.878 ± 0.683
3.492GluGlu: 3.492 ± 0.113
2.599GluPhe: 2.599 ± 0.092
2.758GluGly: 2.758 ± 0.082
1.108GluHis: 1.108 ± 0.048
5.652GluIle: 5.652 ± 0.114
5.856GluLys: 5.856 ± 0.132
6.342GluLeu: 6.342 ± 0.124
1.692GluMet: 1.692 ± 0.061
4.469GluAsn: 4.469 ± 0.107
1.61GluPro: 1.61 ± 0.069
2.307GluGln: 2.307 ± 0.065
2.731GluArg: 2.731 ± 0.098
3.504GluSer: 3.504 ± 0.146
4.291GluThr: 4.291 ± 0.106
4.233GluVal: 4.233 ± 0.113
0.379GluTrp: 0.379 ± 0.026
1.617GluTyr: 1.617 ± 0.062
0.0GluXaa: 0.0 ± 0.0
Phe
3.54PheAla: 3.54 ± 0.098
0.155PheCys: 0.155 ± 0.019
3.938PheAsp: 3.938 ± 0.084
3.151PheGlu: 3.151 ± 0.082
1.861PhePhe: 1.861 ± 0.065
3.243PheGly: 3.243 ± 0.094
0.669PheHis: 0.669 ± 0.034
3.135PheIle: 3.135 ± 0.087
2.362PheLys: 2.362 ± 0.074
3.812PheLeu: 3.812 ± 0.091
1.083PheMet: 1.083 ± 0.048
1.948PheAsn: 1.948 ± 0.068
1.431PhePro: 1.431 ± 0.061
1.364PheGln: 1.364 ± 0.051
1.416PheArg: 1.416 ± 0.046
3.267PheSer: 3.267 ± 0.075
2.696PheThr: 2.696 ± 0.075
3.25PheVal: 3.25 ± 0.091
0.422PheTrp: 0.422 ± 0.027
1.631PheTyr: 1.631 ± 0.064
0.0PheXaa: 0.0 ± 0.0
Gly
4.99GlyAla: 4.99 ± 0.119
0.258GlyCys: 0.258 ± 0.024
3.754GlyAsp: 3.754 ± 0.084
3.673GlyGlu: 3.673 ± 0.09
3.257GlyPhe: 3.257 ± 0.085
4.196GlyGly: 4.196 ± 0.128
1.183GlyHis: 1.183 ± 0.056
4.975GlyIle: 4.975 ± 0.112
4.664GlyLys: 4.664 ± 0.094
5.941GlyLeu: 5.941 ± 0.137
1.697GlyMet: 1.697 ± 0.065
2.965GlyAsn: 2.965 ± 0.075
1.177GlyPro: 1.177 ± 0.047
2.517GlyGln: 2.517 ± 0.066
2.517GlyArg: 2.517 ± 0.083
3.718GlySer: 3.718 ± 0.092
4.114GlyThr: 4.114 ± 0.121
4.881GlyVal: 4.881 ± 0.101
0.704GlyTrp: 0.704 ± 0.053
2.534GlyTyr: 2.534 ± 0.081
0.0GlyXaa: 0.0 ± 0.0
His
1.376HisAla: 1.376 ± 0.049
0.061HisCys: 0.061 ± 0.01
1.248HisAsp: 1.248 ± 0.042
1.11HisGlu: 1.11 ± 0.047
1.049HisPhe: 1.049 ± 0.049
1.25HisGly: 1.25 ± 0.058
0.482HisHis: 0.482 ± 0.039
1.055HisIle: 1.055 ± 0.052
0.96HisLys: 0.96 ± 0.043
1.631HisLeu: 1.631 ± 0.061
0.401HisMet: 0.401 ± 0.027
0.704HisAsn: 0.704 ± 0.038
0.755HisPro: 0.755 ± 0.043
0.698HisGln: 0.698 ± 0.037
0.726HisArg: 0.726 ± 0.037
0.886HisSer: 0.886 ± 0.05
0.914HisThr: 0.914 ± 0.047
1.212HisVal: 1.212 ± 0.055
0.14HisTrp: 0.14 ± 0.02
0.7HisTyr: 0.7 ± 0.044
0.0HisXaa: 0.0 ± 0.0
Ile
6.932IleAla: 6.932 ± 0.13
0.285IleCys: 0.285 ± 0.026
4.867IleAsp: 4.867 ± 0.098
4.286IleGlu: 4.286 ± 0.112
3.359IlePhe: 3.359 ± 0.108
4.817IleGly: 4.817 ± 0.114
1.163IleHis: 1.163 ± 0.053
5.077IleIle: 5.077 ± 0.144
4.906IleLys: 4.906 ± 0.105
6.469IleLeu: 6.469 ± 0.147
1.583IleMet: 1.583 ± 0.06
3.381IleAsn: 3.381 ± 0.09
2.582IlePro: 2.582 ± 0.073
2.13IleGln: 2.13 ± 0.065
2.503IleArg: 2.503 ± 0.083
5.186IleSer: 5.186 ± 0.112
4.638IleThr: 4.638 ± 0.092
4.94IleVal: 4.94 ± 0.115
0.603IleTrp: 0.603 ± 0.03
2.387IleTyr: 2.387 ± 0.07
0.0IleXaa: 0.0 ± 0.0
Lys
5.652LysAla: 5.652 ± 0.135
0.135LysCys: 0.135 ± 0.018
3.677LysAsp: 3.677 ± 0.085
3.984LysGlu: 3.984 ± 0.129
2.56LysPhe: 2.56 ± 0.073
3.347LysGly: 3.347 ± 0.08
1.165LysHis: 1.165 ± 0.041
5.647LysIle: 5.647 ± 0.11
5.857LysLys: 5.857 ± 0.162
6.177LysLeu: 6.177 ± 0.138
2.201LysMet: 2.201 ± 0.067
4.273LysAsn: 4.273 ± 0.097
2.136LysPro: 2.136 ± 0.072
2.471LysGln: 2.471 ± 0.085
2.881LysArg: 2.881 ± 0.083
4.544LysSer: 4.544 ± 0.1
4.975LysThr: 4.975 ± 0.103
4.507LysVal: 4.507 ± 0.098
0.596LysTrp: 0.596 ± 0.033
2.442LysTyr: 2.442 ± 0.078
0.0LysXaa: 0.0 ± 0.0
Leu
8.805LeuAla: 8.805 ± 0.169
0.222LeuCys: 0.222 ± 0.021
6.102LeuAsp: 6.102 ± 0.129
5.451LeuGlu: 5.451 ± 0.095
3.625LeuPhe: 3.625 ± 0.113
5.675LeuGly: 5.675 ± 0.133
1.436LeuHis: 1.436 ± 0.052
6.132LeuIle: 6.132 ± 0.146
5.904LeuLys: 5.904 ± 0.119
7.792LeuLeu: 7.792 ± 0.162
2.287LeuMet: 2.287 ± 0.069
3.81LeuAsn: 3.81 ± 0.085
3.774LeuPro: 3.774 ± 0.095
3.012LeuGln: 3.012 ± 0.076
3.306LeuArg: 3.306 ± 0.104
7.312LeuSer: 7.312 ± 0.123
6.626LeuThr: 6.626 ± 0.132
6.267LeuVal: 6.267 ± 0.116
0.574LeuTrp: 0.574 ± 0.035
2.565LeuTyr: 2.565 ± 0.08
0.0LeuXaa: 0.0 ± 0.0
Met
2.304MetAla: 2.304 ± 0.074
0.082MetCys: 0.082 ± 0.013
1.267MetAsp: 1.267 ± 0.055
0.922MetGlu: 0.922 ± 0.046
0.842MetPhe: 0.842 ± 0.042
1.446MetGly: 1.446 ± 0.059
0.292MetHis: 0.292 ± 0.022
1.896MetIle: 1.896 ± 0.068
1.73MetLys: 1.73 ± 0.059
2.152MetLeu: 2.152 ± 0.075
0.698MetMet: 0.698 ± 0.039
1.209MetAsn: 1.209 ± 0.053
0.973MetPro: 0.973 ± 0.041
0.936MetGln: 0.936 ± 0.039
1.06MetArg: 1.06 ± 0.042
1.759MetSer: 1.759 ± 0.068
2.348MetThr: 2.348 ± 0.067
1.53MetVal: 1.53 ± 0.054
0.125MetTrp: 0.125 ± 0.013
0.546MetTyr: 0.546 ± 0.033
0.0MetXaa: 0.0 ± 0.0
Asn
4.005AsnAla: 4.005 ± 0.106
0.195AsnCys: 0.195 ± 0.021
2.83AsnAsp: 2.83 ± 0.09
2.691AsnGlu: 2.691 ± 0.095
2.316AsnPhe: 2.316 ± 0.065
3.707AsnGly: 3.707 ± 0.107
0.973AsnHis: 0.973 ± 0.043
3.364AsnIle: 3.364 ± 0.09
2.905AsnLys: 2.905 ± 0.089
4.595AsnLeu: 4.595 ± 0.111
1.078AsnMet: 1.078 ± 0.046
2.025AsnAsn: 2.025 ± 0.076
2.36AsnPro: 2.36 ± 0.068
2.167AsnGln: 2.167 ± 0.072
1.72AsnArg: 1.72 ± 0.06
2.724AsnSer: 2.724 ± 0.087
2.635AsnThr: 2.635 ± 0.082
3.272AsnVal: 3.272 ± 0.093
0.48AsnTrp: 0.48 ± 0.033
1.81AsnTyr: 1.81 ± 0.058
0.0AsnXaa: 0.0 ± 0.0
Pro
2.538ProAla: 2.538 ± 0.086
0.097ProCys: 0.097 ± 0.013
2.485ProAsp: 2.485 ± 0.073
3.069ProGlu: 3.069 ± 0.102
1.588ProPhe: 1.588 ± 0.051
1.779ProGly: 1.779 ± 0.062
0.574ProHis: 0.574 ± 0.031
2.218ProIle: 2.218 ± 0.067
2.177ProLys: 2.177 ± 0.06
2.69ProLeu: 2.69 ± 0.069
0.654ProMet: 0.654 ± 0.032
1.612ProAsn: 1.612 ± 0.064
0.593ProPro: 0.593 ± 0.041
1.144ProGln: 1.144 ± 0.047
1.079ProArg: 1.079 ± 0.048
2.261ProSer: 2.261 ± 0.086
2.041ProThr: 2.041 ± 0.067
2.768ProVal: 2.768 ± 0.079
0.283ProTrp: 0.283 ± 0.025
1.136ProTyr: 1.136 ± 0.047
0.0ProXaa: 0.0 ± 0.0
Gln
3.59GlnAla: 3.59 ± 0.111
0.072GlnCys: 0.072 ± 0.012
1.843GlnAsp: 1.843 ± 0.056
2.311GlnGlu: 2.311 ± 0.074
1.528GlnPhe: 1.528 ± 0.051
1.935GlnGly: 1.935 ± 0.057
0.64GlnHis: 0.64 ± 0.032
2.901GlnIle: 2.901 ± 0.082
2.958GlnLys: 2.958 ± 0.075
3.467GlnLeu: 3.467 ± 0.097
0.943GlnMet: 0.943 ± 0.042
1.933GlnAsn: 1.933 ± 0.065
1.136GlnPro: 1.136 ± 0.049
1.241GlnGln: 1.241 ± 0.059
1.228GlnArg: 1.228 ± 0.05
2.054GlnSer: 2.054 ± 0.069
2.512GlnThr: 2.512 ± 0.119
2.792GlnVal: 2.792 ± 0.071
0.251GlnTrp: 0.251 ± 0.024
1.212GlnTyr: 1.212 ± 0.048
0.0GlnXaa: 0.0 ± 0.0
Arg
2.9ArgAla: 2.9 ± 0.07
0.108ArgCys: 0.108 ± 0.014
2.577ArgAsp: 2.577 ± 0.076
2.727ArgGlu: 2.727 ± 0.097
1.926ArgPhe: 1.926 ± 0.07
2.241ArgGly: 2.241 ± 0.085
0.712ArgHis: 0.712 ± 0.036
2.515ArgIle: 2.515 ± 0.08
2.618ArgLys: 2.618 ± 0.088
3.666ArgLeu: 3.666 ± 0.1
0.984ArgMet: 0.984 ± 0.043
1.706ArgAsn: 1.706 ± 0.066
1.148ArgPro: 1.148 ± 0.053
1.697ArgGln: 1.697 ± 0.06
1.732ArgArg: 1.732 ± 0.065
1.733ArgSer: 1.733 ± 0.056
1.957ArgThr: 1.957 ± 0.068
2.608ArgVal: 2.608 ± 0.079
0.249ArgTrp: 0.249 ± 0.019
1.392ArgTyr: 1.392 ± 0.05
0.0ArgXaa: 0.0 ± 0.0
Ser
4.963SerAla: 4.963 ± 0.186
0.166SerCys: 0.166 ± 0.018
6.996SerAsp: 6.996 ± 1.114
5.296SerGlu: 5.296 ± 0.47
2.768SerPhe: 2.768 ± 0.082
4.809SerGly: 4.809 ± 0.117
1.241SerHis: 1.241 ± 0.07
3.888SerIle: 3.888 ± 0.101
4.049SerLys: 4.049 ± 0.095
5.676SerLeu: 5.676 ± 0.098
1.264SerMet: 1.264 ± 0.046
2.864SerAsn: 2.864 ± 0.077
1.723SerPro: 1.723 ± 0.057
2.522SerGln: 2.522 ± 0.067
2.249SerArg: 2.249 ± 0.075
5.041SerSer: 5.041 ± 0.517
3.999SerThr: 3.999 ± 0.376
4.32SerVal: 4.32 ± 0.099
0.557SerTrp: 0.557 ± 0.027
2.355SerTyr: 2.355 ± 0.075
0.0SerXaa: 0.0 ± 0.0
Thr
5.965ThrAla: 5.965 ± 0.24
0.186ThrCys: 0.186 ± 0.019
4.056ThrAsp: 4.056 ± 0.162
3.839ThrGlu: 3.839 ± 0.243
2.857ThrPhe: 2.857 ± 0.072
4.77ThrGly: 4.77 ± 0.12
1.243ThrHis: 1.243 ± 0.045
4.683ThrIle: 4.683 ± 0.102
3.832ThrLys: 3.832 ± 0.1
5.881ThrLeu: 5.881 ± 0.124
1.231ThrMet: 1.231 ± 0.047
2.796ThrAsn: 2.796 ± 0.088
2.879ThrPro: 2.879 ± 0.097
2.565ThrGln: 2.565 ± 0.088
2.112ThrArg: 2.112 ± 0.069
4.211ThrSer: 4.211 ± 0.145
4.56ThrThr: 4.56 ± 0.197
4.857ThrVal: 4.857 ± 0.149
0.512ThrTrp: 0.512 ± 0.031
2.314ThrTyr: 2.314 ± 0.095
0.0ThrXaa: 0.0 ± 0.0
Val
6.607ValAla: 6.607 ± 0.128
0.253ValCys: 0.253 ± 0.025
4.298ValAsp: 4.298 ± 0.101
3.929ValGlu: 3.929 ± 0.11
2.895ValPhe: 2.895 ± 0.085
4.249ValGly: 4.249 ± 0.111
1.095ValHis: 1.095 ± 0.055
5.601ValIle: 5.601 ± 0.109
5.079ValLys: 5.079 ± 0.116
6.337ValLeu: 6.337 ± 0.113
1.682ValMet: 1.682 ± 0.058
3.197ValAsn: 3.197 ± 0.079
2.673ValPro: 2.673 ± 0.075
1.991ValGln: 1.991 ± 0.061
2.558ValArg: 2.558 ± 0.064
4.846ValSer: 4.846 ± 0.14
5.181ValThr: 5.181 ± 0.184
5.239ValVal: 5.239 ± 0.107
0.528ValTrp: 0.528 ± 0.032
2.293ValTyr: 2.293 ± 0.074
0.0ValXaa: 0.0 ± 0.0
Trp
0.594TrpAla: 0.594 ± 0.033
0.044TrpCys: 0.044 ± 0.009
0.468TrpAsp: 0.468 ± 0.034
0.475TrpGlu: 0.475 ± 0.029
0.418TrpPhe: 0.418 ± 0.029
0.574TrpGly: 0.574 ± 0.035
0.213TrpHis: 0.213 ± 0.024
0.444TrpIle: 0.444 ± 0.031
0.374TrpLys: 0.374 ± 0.029
0.929TrpLeu: 0.929 ± 0.051
0.19TrpMet: 0.19 ± 0.016
0.42TrpAsn: 0.42 ± 0.027
0.164TrpPro: 0.164 ± 0.015
0.505TrpGln: 0.505 ± 0.031
0.424TrpArg: 0.424 ± 0.027
0.471TrpSer: 0.471 ± 0.031
0.482TrpThr: 0.482 ± 0.03
0.47TrpVal: 0.47 ± 0.032
0.094TrpTrp: 0.094 ± 0.012
0.331TrpTyr: 0.331 ± 0.024
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.655TyrAla: 2.655 ± 0.077
0.114TyrCys: 0.114 ± 0.015
2.519TyrAsp: 2.519 ± 0.064
2.211TyrGlu: 2.211 ± 0.067
1.756TyrPhe: 1.756 ± 0.058
2.206TyrGly: 2.206 ± 0.063
0.712TyrHis: 0.712 ± 0.04
2.048TyrIle: 2.048 ± 0.066
2.09TyrLys: 2.09 ± 0.067
3.321TyrLeu: 3.321 ± 0.081
0.695TyrMet: 0.695 ± 0.033
1.756TyrAsn: 1.756 ± 0.064
1.171TyrPro: 1.171 ± 0.049
1.889TyrGln: 1.889 ± 0.069
1.53TyrArg: 1.53 ± 0.066
1.868TyrSer: 1.868 ± 0.066
2.242TyrThr: 2.242 ± 0.128
2.109TyrVal: 2.109 ± 0.065
0.297TyrTrp: 0.297 ± 0.024
1.423TyrTyr: 1.423 ± 0.062
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 1846 proteins (585584 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