Amino acid dipepetide frequency for Brevibacterium sp. CS2

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
20.984AlaAla: 20.984 ± 0.264
0.921AlaCys: 0.921 ± 0.036
8.45AlaAsp: 8.45 ± 0.102
9.994AlaGlu: 9.994 ± 0.135
3.6AlaPhe: 3.6 ± 0.071
13.758AlaGly: 13.758 ± 0.16
2.993AlaHis: 2.993 ± 0.06
5.06AlaIle: 5.06 ± 0.081
2.515AlaLys: 2.515 ± 0.072
13.588AlaLeu: 13.588 ± 0.146
2.438AlaMet: 2.438 ± 0.049
1.97AlaAsn: 1.97 ± 0.056
6.947AlaPro: 6.947 ± 0.121
4.006AlaGln: 4.006 ± 0.065
9.464AlaArg: 9.464 ± 0.122
6.164AlaSer: 6.164 ± 0.09
6.097AlaThr: 6.097 ± 0.086
11.157AlaVal: 11.157 ± 0.136
1.619AlaTrp: 1.619 ± 0.049
2.095AlaTyr: 2.095 ± 0.047
0.0AlaXaa: 0.0 ± 0.0
Cys
0.921CysAla: 0.921 ± 0.036
0.093CysCys: 0.093 ± 0.011
0.353CysAsp: 0.353 ± 0.019
0.383CysGlu: 0.383 ± 0.019
0.201CysPhe: 0.201 ± 0.015
0.782CysGly: 0.782 ± 0.034
0.137CysHis: 0.137 ± 0.012
0.269CysIle: 0.269 ± 0.018
0.078CysLys: 0.078 ± 0.009
0.545CysLeu: 0.545 ± 0.024
0.089CysMet: 0.089 ± 0.009
0.123CysAsn: 0.123 ± 0.012
0.408CysPro: 0.408 ± 0.023
0.126CysGln: 0.126 ± 0.012
0.498CysArg: 0.498 ± 0.024
0.426CysSer: 0.426 ± 0.022
0.471CysThr: 0.471 ± 0.022
0.438CysVal: 0.438 ± 0.027
0.101CysTrp: 0.101 ± 0.011
0.143CysTyr: 0.143 ± 0.013
0.0CysXaa: 0.0 ± 0.0
Asp
7.945AspAla: 7.945 ± 0.092
0.372AspCys: 0.372 ± 0.019
3.924AspAsp: 3.924 ± 0.09
4.174AspGlu: 4.174 ± 0.078
1.914AspPhe: 1.914 ± 0.051
5.576AspGly: 5.576 ± 0.096
1.481AspHis: 1.481 ± 0.041
2.664AspIle: 2.664 ± 0.059
0.92AspLys: 0.92 ± 0.036
6.094AspLeu: 6.094 ± 0.095
1.027AspMet: 1.027 ± 0.032
0.846AspAsn: 0.846 ± 0.028
4.911AspPro: 4.911 ± 0.074
1.394AspGln: 1.394 ± 0.043
4.905AspArg: 4.905 ± 0.083
3.408AspSer: 3.408 ± 0.064
3.69AspThr: 3.69 ± 0.065
4.551AspVal: 4.551 ± 0.072
0.948AspTrp: 0.948 ± 0.034
1.27AspTyr: 1.27 ± 0.04
0.0AspXaa: 0.0 ± 0.0
Glu
7.87GluAla: 7.87 ± 0.116
0.327GluCys: 0.327 ± 0.02
3.738GluAsp: 3.738 ± 0.08
3.919GluGlu: 3.919 ± 0.074
1.986GluPhe: 1.986 ± 0.047
4.059GluGly: 4.059 ± 0.086
1.896GluHis: 1.896 ± 0.05
3.125GluIle: 3.125 ± 0.064
1.633GluLys: 1.633 ± 0.054
6.828GluLeu: 6.828 ± 0.097
1.023GluMet: 1.023 ± 0.036
1.329GluAsn: 1.329 ± 0.042
3.47GluPro: 3.47 ± 0.069
2.42GluGln: 2.42 ± 0.056
4.977GluArg: 4.977 ± 0.082
3.539GluSer: 3.539 ± 0.073
2.976GluThr: 2.976 ± 0.054
5.572GluVal: 5.572 ± 0.108
0.793GluTrp: 0.793 ± 0.031
1.311GluTyr: 1.311 ± 0.04
0.0GluXaa: 0.0 ± 0.0
Phe
4.131PheAla: 4.131 ± 0.076
0.215PheCys: 0.215 ± 0.016
2.409PheAsp: 2.409 ± 0.056
1.742PheGlu: 1.742 ± 0.046
1.04PhePhe: 1.04 ± 0.035
3.282PheGly: 3.282 ± 0.069
0.643PheHis: 0.643 ± 0.028
1.217PheIle: 1.217 ± 0.043
0.451PheLys: 0.451 ± 0.024
2.726PheLeu: 2.726 ± 0.063
0.49PheMet: 0.49 ± 0.024
0.63PheAsn: 0.63 ± 0.026
1.325PhePro: 1.325 ± 0.037
0.633PheGln: 0.633 ± 0.023
1.626PheArg: 1.626 ± 0.04
1.819PheSer: 1.819 ± 0.049
2.143PheThr: 2.143 ± 0.055
2.573PheVal: 2.573 ± 0.059
0.392PheTrp: 0.392 ± 0.024
0.581PheTyr: 0.581 ± 0.026
0.0PheXaa: 0.0 ± 0.0
Gly
10.897GlyAla: 10.897 ± 0.15
0.688GlyCys: 0.688 ± 0.028
4.978GlyAsp: 4.978 ± 0.078
5.598GlyGlu: 5.598 ± 0.085
3.225GlyPhe: 3.225 ± 0.068
8.032GlyGly: 8.032 ± 0.126
2.001GlyHis: 2.001 ± 0.048
4.79GlyIle: 4.79 ± 0.077
2.029GlyLys: 2.029 ± 0.053
9.062GlyLeu: 9.062 ± 0.114
2.233GlyMet: 2.233 ± 0.058
1.626GlyAsn: 1.626 ± 0.047
4.755GlyPro: 4.755 ± 0.076
2.539GlyGln: 2.539 ± 0.07
6.723GlyArg: 6.723 ± 0.087
5.844GlySer: 5.844 ± 0.09
6.347GlyThr: 6.347 ± 0.088
7.177GlyVal: 7.177 ± 0.098
1.475GlyTrp: 1.475 ± 0.041
2.182GlyTyr: 2.182 ± 0.053
0.0GlyXaa: 0.0 ± 0.0
His
2.617HisAla: 2.617 ± 0.066
0.177HisCys: 0.177 ± 0.014
1.359HisAsp: 1.359 ± 0.039
1.23HisGlu: 1.23 ± 0.036
0.599HisPhe: 0.599 ± 0.028
2.2HisGly: 2.2 ± 0.052
0.637HisHis: 0.637 ± 0.027
0.807HisIle: 0.807 ± 0.029
0.315HisLys: 0.315 ± 0.02
2.304HisLeu: 2.304 ± 0.057
0.366HisMet: 0.366 ± 0.02
0.347HisAsn: 0.347 ± 0.021
1.844HisPro: 1.844 ± 0.046
0.526HisGln: 0.526 ± 0.024
2.13HisArg: 2.13 ± 0.049
1.214HisSer: 1.214 ± 0.037
1.285HisThr: 1.285 ± 0.038
1.67HisVal: 1.67 ± 0.048
0.284HisTrp: 0.284 ± 0.017
0.422HisTyr: 0.422 ± 0.021
0.0HisXaa: 0.0 ± 0.0
Ile
6.504IleAla: 6.504 ± 0.085
0.319IleCys: 0.319 ± 0.02
3.432IleAsp: 3.432 ± 0.064
2.973IleGlu: 2.973 ± 0.065
1.017IlePhe: 1.017 ± 0.038
4.533IleGly: 4.533 ± 0.081
0.878IleHis: 0.878 ± 0.029
1.994IleIle: 1.994 ± 0.055
0.804IleLys: 0.804 ± 0.037
3.41IleLeu: 3.41 ± 0.072
0.747IleMet: 0.747 ± 0.032
0.971IleAsn: 0.971 ± 0.039
2.283IlePro: 2.283 ± 0.049
0.885IleGln: 0.885 ± 0.029
2.853IleArg: 2.853 ± 0.061
2.242IleSer: 2.242 ± 0.043
3.14IleThr: 3.14 ± 0.063
4.168IleVal: 4.168 ± 0.078
0.371IleTrp: 0.371 ± 0.019
0.722IleTyr: 0.722 ± 0.029
0.0IleXaa: 0.0 ± 0.0
Lys
2.246LysAla: 2.246 ± 0.062
0.085LysCys: 0.085 ± 0.009
1.173LysAsp: 1.173 ± 0.041
1.094LysGlu: 1.094 ± 0.045
0.507LysPhe: 0.507 ± 0.025
1.479LysGly: 1.479 ± 0.045
0.497LysHis: 0.497 ± 0.02
0.946LysIle: 0.946 ± 0.034
0.9LysLys: 0.9 ± 0.049
1.77LysLeu: 1.77 ± 0.061
0.391LysMet: 0.391 ± 0.019
0.546LysAsn: 0.546 ± 0.025
1.05LysPro: 1.05 ± 0.038
0.724LysGln: 0.724 ± 0.03
1.477LysArg: 1.477 ± 0.044
1.242LysSer: 1.242 ± 0.049
1.258LysThr: 1.258 ± 0.039
1.477LysVal: 1.477 ± 0.053
0.222LysTrp: 0.222 ± 0.016
0.47LysTyr: 0.47 ± 0.021
0.0LysXaa: 0.0 ± 0.0
Leu
14.032LeuAla: 14.032 ± 0.164
0.642LeuCys: 0.642 ± 0.026
6.648LeuAsp: 6.648 ± 0.099
5.199LeuGlu: 5.199 ± 0.08
2.745LeuPhe: 2.745 ± 0.069
9.232LeuGly: 9.232 ± 0.118
1.936LeuHis: 1.936 ± 0.051
4.026LeuIle: 4.026 ± 0.08
1.614LeuLys: 1.614 ± 0.047
9.896LeuLeu: 9.896 ± 0.148
1.681LeuMet: 1.681 ± 0.047
1.637LeuAsn: 1.637 ± 0.047
5.611LeuPro: 5.611 ± 0.088
2.175LeuGln: 2.175 ± 0.049
7.117LeuArg: 7.117 ± 0.105
5.53LeuSer: 5.53 ± 0.085
6.638LeuThr: 6.638 ± 0.083
8.769LeuVal: 8.769 ± 0.119
1.048LeuTrp: 1.048 ± 0.034
1.382LeuTyr: 1.382 ± 0.035
0.0LeuXaa: 0.0 ± 0.0
Met
2.181MetAla: 2.181 ± 0.049
0.134MetCys: 0.134 ± 0.012
0.933MetAsp: 0.933 ± 0.028
0.82MetGlu: 0.82 ± 0.038
0.568MetPhe: 0.568 ± 0.024
1.448MetGly: 1.448 ± 0.046
0.398MetHis: 0.398 ± 0.023
0.982MetIle: 0.982 ± 0.031
0.485MetLys: 0.485 ± 0.026
1.82MetLeu: 1.82 ± 0.045
0.346MetMet: 0.346 ± 0.024
0.512MetAsn: 0.512 ± 0.021
1.126MetPro: 1.126 ± 0.041
0.473MetGln: 0.473 ± 0.024
1.519MetArg: 1.519 ± 0.044
1.603MetSer: 1.603 ± 0.043
1.719MetThr: 1.719 ± 0.043
1.393MetVal: 1.393 ± 0.041
0.238MetTrp: 0.238 ± 0.018
0.327MetTyr: 0.327 ± 0.019
0.0MetXaa: 0.0 ± 0.0
Asn
2.242AsnAla: 2.242 ± 0.053
0.124AsnCys: 0.124 ± 0.012
1.017AsnAsp: 1.017 ± 0.04
0.868AsnGlu: 0.868 ± 0.033
0.563AsnPhe: 0.563 ± 0.025
1.505AsnGly: 1.505 ± 0.043
0.411AsnHis: 0.411 ± 0.02
0.846AsnIle: 0.846 ± 0.029
0.314AsnLys: 0.314 ± 0.02
1.79AsnLeu: 1.79 ± 0.045
0.347AsnMet: 0.347 ± 0.022
0.393AsnAsn: 0.393 ± 0.024
1.598AsnPro: 1.598 ± 0.042
0.525AsnGln: 0.525 ± 0.025
1.425AsnArg: 1.425 ± 0.04
0.967AsnSer: 0.967 ± 0.034
1.168AsnThr: 1.168 ± 0.038
1.331AsnVal: 1.331 ± 0.043
0.265AsnTrp: 0.265 ± 0.02
0.399AsnTyr: 0.399 ± 0.023
0.0AsnXaa: 0.0 ± 0.0
Pro
8.496ProAla: 8.496 ± 0.126
0.253ProCys: 0.253 ± 0.016
4.156ProAsp: 4.156 ± 0.081
4.768ProGlu: 4.768 ± 0.078
1.619ProPhe: 1.619 ± 0.039
6.433ProGly: 6.433 ± 0.11
1.279ProHis: 1.279 ± 0.042
1.902ProIle: 1.902 ± 0.047
1.01ProLys: 1.01 ± 0.039
4.579ProLeu: 4.579 ± 0.082
0.945ProMet: 0.945 ± 0.032
0.963ProAsn: 0.963 ± 0.035
2.617ProPro: 2.617 ± 0.066
1.742ProGln: 1.742 ± 0.053
3.629ProArg: 3.629 ± 0.076
2.888ProSer: 2.888 ± 0.065
3.33ProThr: 3.33 ± 0.068
5.092ProVal: 5.092 ± 0.085
0.704ProTrp: 0.704 ± 0.03
1.003ProTyr: 1.003 ± 0.038
0.0ProXaa: 0.0 ± 0.0
Gln
3.739GlnAla: 3.739 ± 0.076
0.135GlnCys: 0.135 ± 0.015
1.34GlnAsp: 1.34 ± 0.044
1.531GlnGlu: 1.531 ± 0.047
0.767GlnPhe: 0.767 ± 0.03
1.969GlnGly: 1.969 ± 0.051
0.673GlnHis: 0.673 ± 0.026
1.375GlnIle: 1.375 ± 0.039
0.63GlnLys: 0.63 ± 0.03
2.715GlnLeu: 2.715 ± 0.056
0.599GlnMet: 0.599 ± 0.028
0.552GlnAsn: 0.552 ± 0.028
1.5GlnPro: 1.5 ± 0.048
1.239GlnGln: 1.239 ± 0.056
2.297GlnArg: 2.297 ± 0.054
1.328GlnSer: 1.328 ± 0.041
1.433GlnThr: 1.433 ± 0.044
2.399GlnVal: 2.399 ± 0.051
0.401GlnTrp: 0.401 ± 0.021
0.557GlnTyr: 0.557 ± 0.027
0.0GlnXaa: 0.0 ± 0.0
Arg
9.265ArgAla: 9.265 ± 0.127
0.495ArgCys: 0.495 ± 0.026
3.913ArgAsp: 3.913 ± 0.074
4.522ArgGlu: 4.522 ± 0.084
2.403ArgPhe: 2.403 ± 0.048
5.469ArgGly: 5.469 ± 0.091
1.517ArgHis: 1.517 ± 0.045
3.918ArgIle: 3.918 ± 0.066
1.495ArgLys: 1.495 ± 0.049
7.268ArgLeu: 7.268 ± 0.097
1.805ArgMet: 1.805 ± 0.047
1.354ArgAsn: 1.354 ± 0.041
4.132ArgPro: 4.132 ± 0.084
1.955ArgGln: 1.955 ± 0.047
6.671ArgArg: 6.671 ± 0.113
4.433ArgSer: 4.433 ± 0.082
5.377ArgThr: 5.377 ± 0.089
5.365ArgVal: 5.365 ± 0.084
1.079ArgTrp: 1.079 ± 0.038
1.46ArgTyr: 1.46 ± 0.038
0.0ArgXaa: 0.0 ± 0.0
Ser
7.56SerAla: 7.56 ± 0.095
0.343SerCys: 0.343 ± 0.018
2.991SerAsp: 2.991 ± 0.067
3.214SerGlu: 3.214 ± 0.072
1.606SerPhe: 1.606 ± 0.043
6.373SerGly: 6.373 ± 0.09
1.074SerHis: 1.074 ± 0.039
2.257SerIle: 2.257 ± 0.058
1.147SerLys: 1.147 ± 0.04
4.76SerLeu: 4.76 ± 0.08
1.231SerMet: 1.231 ± 0.037
0.945SerAsn: 0.945 ± 0.034
3.276SerPro: 3.276 ± 0.068
1.5SerGln: 1.5 ± 0.047
4.088SerArg: 4.088 ± 0.086
3.268SerSer: 3.268 ± 0.079
3.881SerThr: 3.881 ± 0.068
4.303SerVal: 4.303 ± 0.07
0.783SerTrp: 0.783 ± 0.031
1.079SerTyr: 1.079 ± 0.034
0.0SerXaa: 0.0 ± 0.0
Thr
8.715ThrAla: 8.715 ± 0.112
0.36ThrCys: 0.36 ± 0.021
3.761ThrAsp: 3.761 ± 0.069
3.788ThrGlu: 3.788 ± 0.076
1.771ThrPhe: 1.771 ± 0.042
6.854ThrGly: 6.854 ± 0.098
1.217ThrHis: 1.217 ± 0.038
2.639ThrIle: 2.639 ± 0.059
1.09ThrLys: 1.09 ± 0.034
5.326ThrLeu: 5.326 ± 0.08
1.082ThrMet: 1.082 ± 0.033
1.024ThrAsn: 1.024 ± 0.034
3.97ThrPro: 3.97 ± 0.083
1.359ThrGln: 1.359 ± 0.039
4.107ThrArg: 4.107 ± 0.082
3.199ThrSer: 3.199 ± 0.064
3.77ThrThr: 3.77 ± 0.072
5.961ThrVal: 5.961 ± 0.091
0.855ThrTrp: 0.855 ± 0.031
1.127ThrTyr: 1.127 ± 0.037
0.0ThrXaa: 0.0 ± 0.0
Val
9.892ValAla: 9.892 ± 0.116
0.594ValCys: 0.594 ± 0.028
5.486ValAsp: 5.486 ± 0.084
5.185ValGlu: 5.185 ± 0.085
2.705ValPhe: 2.705 ± 0.057
6.389ValGly: 6.389 ± 0.093
2.022ValHis: 2.022 ± 0.047
4.092ValIle: 4.092 ± 0.068
1.522ValLys: 1.522 ± 0.049
9.666ValLeu: 9.666 ± 0.126
1.619ValMet: 1.619 ± 0.045
1.585ValAsn: 1.585 ± 0.045
4.984ValPro: 4.984 ± 0.068
1.881ValGln: 1.881 ± 0.044
5.863ValArg: 5.863 ± 0.084
4.675ValSer: 4.675 ± 0.07
5.274ValThr: 5.274 ± 0.089
7.996ValVal: 7.996 ± 0.119
0.976ValTrp: 0.976 ± 0.035
1.429ValTyr: 1.429 ± 0.045
0.0ValXaa: 0.0 ± 0.0
Trp
1.397TrpAla: 1.397 ± 0.043
0.125TrpCys: 0.125 ± 0.011
0.713TrpAsp: 0.713 ± 0.03
0.738TrpGlu: 0.738 ± 0.03
0.575TrpPhe: 0.575 ± 0.028
0.954TrpGly: 0.954 ± 0.032
0.297TrpHis: 0.297 ± 0.018
0.65TrpIle: 0.65 ± 0.026
0.301TrpLys: 0.301 ± 0.019
1.477TrpLeu: 1.477 ± 0.043
0.292TrpMet: 0.292 ± 0.018
0.384TrpAsn: 0.384 ± 0.018
0.619TrpPro: 0.619 ± 0.026
0.512TrpGln: 0.512 ± 0.025
0.913TrpArg: 0.913 ± 0.031
0.748TrpSer: 0.748 ± 0.031
0.826TrpThr: 0.826 ± 0.033
1.027TrpVal: 1.027 ± 0.038
0.275TrpTrp: 0.275 ± 0.018
0.279TrpTyr: 0.279 ± 0.02
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.184TyrAla: 2.184 ± 0.046
0.185TyrCys: 0.185 ± 0.014
1.245TyrAsp: 1.245 ± 0.038
1.051TyrGlu: 1.051 ± 0.034
0.656TyrPhe: 0.656 ± 0.027
1.877TyrGly: 1.877 ± 0.057
0.348TyrHis: 0.348 ± 0.02
0.682TyrIle: 0.682 ± 0.025
0.303TyrLys: 0.303 ± 0.018
1.935TyrLeu: 1.935 ± 0.046
0.276TyrMet: 0.276 ± 0.017
0.359TyrAsn: 0.359 ± 0.016
0.979TyrPro: 0.979 ± 0.04
0.566TyrGln: 0.566 ± 0.027
1.611TyrArg: 1.611 ± 0.045
1.142TyrSer: 1.142 ± 0.033
1.148TyrThr: 1.148 ± 0.035
1.415TyrVal: 1.415 ± 0.038
0.276TyrTrp: 0.276 ± 0.017
0.391TyrTyr: 0.391 ± 0.021
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 2708 proteins (913174 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