Amino acid dipepetide frequency for Helicobacter sp. TUL

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
3.234AlaAla: 3.234 ± 0.097
1.165AlaCys: 1.165 ± 0.054
2.845AlaAsp: 2.845 ± 0.083
2.366AlaGlu: 2.366 ± 0.069
3.783AlaPhe: 3.783 ± 0.097
3.643AlaGly: 3.643 ± 0.087
2.041AlaHis: 2.041 ± 0.065
6.071AlaIle: 6.071 ± 0.116
6.244AlaLys: 6.244 ± 0.137
9.73AlaLeu: 9.73 ± 0.165
2.016AlaMet: 2.016 ± 0.062
3.735AlaAsn: 3.735 ± 0.095
2.486AlaPro: 2.486 ± 0.067
4.498AlaGln: 4.498 ± 0.111
3.137AlaArg: 3.137 ± 0.08
4.216AlaSer: 4.216 ± 0.089
3.894AlaThr: 3.894 ± 0.11
3.172AlaVal: 3.172 ± 0.084
0.503AlaTrp: 0.503 ± 0.033
3.29AlaTyr: 3.29 ± 0.089
0.0AlaXaa: 0.0 ± 0.0
Cys
1.34CysAla: 1.34 ± 0.059
0.161CysCys: 0.161 ± 0.021
0.843CysAsp: 0.843 ± 0.046
0.934CysGlu: 0.934 ± 0.039
0.664CysPhe: 0.664 ± 0.035
1.179CysGly: 1.179 ± 0.053
0.287CysHis: 0.287 ± 0.027
1.297CysIle: 1.297 ± 0.054
0.841CysLys: 0.841 ± 0.045
1.022CysLeu: 1.022 ± 0.047
0.361CysMet: 0.361 ± 0.03
0.554CysAsn: 0.554 ± 0.033
0.365CysPro: 0.365 ± 0.029
0.348CysGln: 0.348 ± 0.027
0.284CysArg: 0.284 ± 0.025
0.711CysSer: 0.711 ± 0.04
0.507CysThr: 0.507 ± 0.031
1.381CysVal: 1.381 ± 0.057
0.097CysTrp: 0.097 ± 0.014
0.445CysTyr: 0.445 ± 0.028
0.0CysXaa: 0.0 ± 0.0
Asp
2.717AspAla: 2.717 ± 0.065
0.755AspCys: 0.755 ± 0.042
2.292AspAsp: 2.292 ± 0.072
3.673AspGlu: 3.673 ± 0.092
3.377AspPhe: 3.377 ± 0.089
2.787AspGly: 2.787 ± 0.078
0.606AspHis: 0.606 ± 0.034
4.923AspIle: 4.923 ± 0.095
3.71AspLys: 3.71 ± 0.1
4.846AspLeu: 4.846 ± 0.106
1.525AspMet: 1.525 ± 0.058
2.138AspAsn: 2.138 ± 0.076
1.427AspPro: 1.427 ± 0.061
0.845AspGln: 0.845 ± 0.046
1.861AspArg: 1.861 ± 0.061
5.64AspSer: 5.64 ± 0.117
3.408AspThr: 3.408 ± 0.095
3.177AspVal: 3.177 ± 0.088
0.4AspTrp: 0.4 ± 0.025
1.946AspTyr: 1.946 ± 0.057
0.0AspXaa: 0.0 ± 0.0
Glu
4.096GluAla: 4.096 ± 0.09
0.905GluCys: 0.905 ± 0.045
2.515GluAsp: 2.515 ± 0.089
3.63GluGlu: 3.63 ± 0.105
3.381GluPhe: 3.381 ± 0.078
3.109GluGly: 3.109 ± 0.085
1.301GluHis: 1.301 ± 0.05
6.003GluIle: 6.003 ± 0.117
3.486GluLys: 3.486 ± 0.103
5.945GluLeu: 5.945 ± 0.13
1.437GluMet: 1.437 ± 0.052
3.296GluAsn: 3.296 ± 0.095
1.297GluPro: 1.297 ± 0.055
2.437GluGln: 2.437 ± 0.066
2.521GluArg: 2.521 ± 0.072
5.308GluSer: 5.308 ± 0.111
2.004GluThr: 2.004 ± 0.065
4.246GluVal: 4.246 ± 0.086
0.532GluTrp: 0.532 ± 0.03
2.676GluTyr: 2.676 ± 0.072
0.0GluXaa: 0.0 ± 0.0
Phe
4.026PheAla: 4.026 ± 0.087
0.983PheCys: 0.983 ± 0.049
2.843PheAsp: 2.843 ± 0.082
3.222PheGlu: 3.222 ± 0.088
2.857PhePhe: 2.857 ± 0.085
4.508PheGly: 4.508 ± 0.118
0.822PheHis: 0.822 ± 0.048
3.754PheIle: 3.754 ± 0.101
2.538PheLys: 2.538 ± 0.067
5.333PheLeu: 5.333 ± 0.126
1.239PheMet: 1.239 ± 0.051
1.919PheAsn: 1.919 ± 0.056
1.26PhePro: 1.26 ± 0.059
1.072PheGln: 1.072 ± 0.039
1.661PheArg: 1.661 ± 0.058
4.23PheSer: 4.23 ± 0.104
2.094PheThr: 2.094 ± 0.06
3.989PheVal: 3.989 ± 0.101
0.639PheTrp: 0.639 ± 0.033
2.043PheTyr: 2.043 ± 0.07
0.0PheXaa: 0.0 ± 0.0
Gly
4.815GlyAla: 4.815 ± 0.126
0.804GlyCys: 0.804 ± 0.044
3.135GlyAsp: 3.135 ± 0.086
3.915GlyGlu: 3.915 ± 0.087
3.844GlyPhe: 3.844 ± 0.099
4.603GlyGly: 4.603 ± 0.132
1.113GlyHis: 1.113 ± 0.058
5.807GlyIle: 5.807 ± 0.106
4.286GlyLys: 4.286 ± 0.1
5.623GlyLeu: 5.623 ± 0.107
1.596GlyMet: 1.596 ± 0.061
2.707GlyAsn: 2.707 ± 0.071
0.806GlyPro: 0.806 ± 0.046
1.556GlyGln: 1.556 ± 0.055
2.152GlyArg: 2.152 ± 0.067
3.913GlySer: 3.913 ± 0.085
2.437GlyThr: 2.437 ± 0.079
5.265GlyVal: 5.265 ± 0.108
0.484GlyTrp: 0.484 ± 0.032
2.764GlyTyr: 2.764 ± 0.075
0.0GlyXaa: 0.0 ± 0.0
His
1.424HisAla: 1.424 ± 0.063
0.324HisCys: 0.324 ± 0.029
0.917HisAsp: 0.917 ± 0.044
0.796HisGlu: 0.796 ± 0.035
1.371HisPhe: 1.371 ± 0.051
0.99HisGly: 0.99 ± 0.051
0.528HisHis: 0.528 ± 0.036
2.62HisIle: 2.62 ± 0.07
2.002HisLys: 2.002 ± 0.066
2.028HisLeu: 2.028 ± 0.069
0.517HisMet: 0.517 ± 0.029
1.631HisAsn: 1.631 ± 0.064
0.752HisPro: 0.752 ± 0.042
0.804HisGln: 0.804 ± 0.039
0.796HisArg: 0.796 ± 0.04
1.579HisSer: 1.579 ± 0.058
2.49HisThr: 2.49 ± 0.075
0.571HisVal: 0.571 ± 0.034
0.181HisTrp: 0.181 ± 0.02
1.031HisTyr: 1.031 ± 0.045
0.0HisXaa: 0.0 ± 0.0
Ile
7.51IleAla: 7.51 ± 0.125
1.138IleCys: 1.138 ± 0.053
4.747IleAsp: 4.747 ± 0.094
5.351IleGlu: 5.351 ± 0.104
4.112IlePhe: 4.112 ± 0.115
5.156IleGly: 5.156 ± 0.095
1.806IleHis: 1.806 ± 0.053
5.821IleIle: 5.821 ± 0.109
5.174IleLys: 5.174 ± 0.098
8.742IleLeu: 8.742 ± 0.132
1.662IleMet: 1.662 ± 0.063
3.412IleAsn: 3.412 ± 0.091
3.181IlePro: 3.181 ± 0.08
3.255IleGln: 3.255 ± 0.079
2.529IleArg: 2.529 ± 0.07
5.145IleSer: 5.145 ± 0.106
4.817IleThr: 4.817 ± 0.114
5.141IleVal: 5.141 ± 0.122
0.569IleTrp: 0.569 ± 0.039
2.892IleTyr: 2.892 ± 0.077
0.0IleXaa: 0.0 ± 0.0
Lys
5.349LysAla: 5.349 ± 0.122
0.579LysCys: 0.579 ± 0.039
4.85LysAsp: 4.85 ± 0.111
5.665LysGlu: 5.665 ± 0.128
2.235LysPhe: 2.235 ± 0.076
3.69LysGly: 3.69 ± 0.087
1.641LysHis: 1.641 ± 0.06
5.941LysIle: 5.941 ± 0.097
4.927LysLys: 4.927 ± 0.109
6.04LysLeu: 6.04 ± 0.133
1.699LysMet: 1.699 ± 0.053
4.413LysAsn: 4.413 ± 0.096
2.48LysPro: 2.48 ± 0.069
2.999LysGln: 2.999 ± 0.088
2.837LysArg: 2.837 ± 0.078
4.104LysSer: 4.104 ± 0.104
3.476LysThr: 3.476 ± 0.084
3.678LysVal: 3.678 ± 0.09
0.501LysTrp: 0.501 ± 0.03
2.241LysTyr: 2.241 ± 0.067
0.0LysXaa: 0.0 ± 0.0
Leu
7.664LeuAla: 7.664 ± 0.147
1.845LeuCys: 1.845 ± 0.06
6.112LeuAsp: 6.112 ± 0.12
7.326LeuGlu: 7.326 ± 0.142
4.62LeuPhe: 4.62 ± 0.112
7.126LeuGly: 7.126 ± 0.115
2.896LeuHis: 2.896 ± 0.083
6.434LeuIle: 6.434 ± 0.136
7.021LeuLys: 7.021 ± 0.125
9.887LeuLeu: 9.887 ± 0.173
2.053LeuMet: 2.053 ± 0.057
4.216LeuAsn: 4.216 ± 0.093
3.801LeuPro: 3.801 ± 0.091
5.409LeuGln: 5.409 ± 0.126
4.156LeuArg: 4.156 ± 0.098
7.753LeuSer: 7.753 ± 0.123
4.494LeuThr: 4.494 ± 0.099
5.389LeuVal: 5.389 ± 0.115
0.897LeuTrp: 0.897 ± 0.038
3.878LeuTyr: 3.878 ± 0.092
0.0LeuXaa: 0.0 ± 0.0
Met
1.649MetAla: 1.649 ± 0.055
0.392MetCys: 0.392 ± 0.032
1.004MetAsp: 1.004 ± 0.049
1.148MetGlu: 1.148 ± 0.055
0.959MetPhe: 0.959 ± 0.046
1.587MetGly: 1.587 ± 0.058
0.554MetHis: 0.554 ± 0.034
1.74MetIle: 1.74 ± 0.053
1.466MetLys: 1.466 ± 0.053
2.721MetLeu: 2.721 ± 0.078
0.482MetMet: 0.482 ± 0.028
0.977MetAsn: 0.977 ± 0.044
1.134MetPro: 1.134 ± 0.048
1.561MetGln: 1.561 ± 0.06
1.435MetArg: 1.435 ± 0.052
1.55MetSer: 1.55 ± 0.056
0.822MetThr: 0.822 ± 0.042
1.243MetVal: 1.243 ± 0.051
0.186MetTrp: 0.186 ± 0.019
0.744MetTyr: 0.744 ± 0.036
0.0MetXaa: 0.0 ± 0.0
Asn
4.805AsnAla: 4.805 ± 0.112
0.371AsnCys: 0.371 ± 0.026
2.342AsnAsp: 2.342 ± 0.076
2.416AsnGlu: 2.416 ± 0.072
2.274AsnPhe: 2.274 ± 0.074
3.111AsnGly: 3.111 ± 0.098
0.936AsnHis: 0.936 ± 0.039
4.356AsnIle: 4.356 ± 0.093
3.003AsnLys: 3.003 ± 0.087
5.454AsnLeu: 5.454 ± 0.115
1.002AsnMet: 1.002 ± 0.049
2.4AsnAsn: 2.4 ± 0.089
2.709AsnPro: 2.709 ± 0.07
1.482AsnGln: 1.482 ± 0.061
1.472AsnArg: 1.472 ± 0.056
2.222AsnSer: 2.222 ± 0.072
3.645AsnThr: 3.645 ± 0.107
2.797AsnVal: 2.797 ± 0.08
0.256AsnTrp: 0.256 ± 0.021
1.6AsnTyr: 1.6 ± 0.059
0.0AsnXaa: 0.0 ± 0.0
Pro
1.556ProAla: 1.556 ± 0.057
0.328ProCys: 0.328 ± 0.024
1.319ProAsp: 1.319 ± 0.061
1.596ProGlu: 1.596 ± 0.062
1.789ProPhe: 1.789 ± 0.063
1.025ProGly: 1.025 ± 0.047
1.159ProHis: 1.159 ± 0.049
2.748ProIle: 2.748 ± 0.079
3.166ProLys: 3.166 ± 0.094
3.649ProLeu: 3.649 ± 0.089
0.798ProMet: 0.798 ± 0.039
2.08ProAsn: 2.08 ± 0.06
1.06ProPro: 1.06 ± 0.058
2.047ProGln: 2.047 ± 0.069
1.093ProArg: 1.093 ± 0.046
2.381ProSer: 2.381 ± 0.074
2.263ProThr: 2.263 ± 0.065
1.527ProVal: 1.527 ± 0.065
0.223ProTrp: 0.223 ± 0.021
1.575ProTyr: 1.575 ± 0.058
0.0ProXaa: 0.0 ± 0.0
Gln
3.337GlnAla: 3.337 ± 0.09
0.451GlnCys: 0.451 ± 0.03
2.89GlnAsp: 2.89 ± 0.089
3.849GlnGlu: 3.849 ± 0.104
1.107GlnPhe: 1.107 ± 0.052
2.307GlnGly: 2.307 ± 0.068
0.915GlnHis: 0.915 ± 0.042
3.191GlnIle: 3.191 ± 0.07
4.168GlnLys: 4.168 ± 0.11
2.321GlnLeu: 2.321 ± 0.067
0.921GlnMet: 0.921 ± 0.046
3.214GlnAsn: 3.214 ± 0.095
0.973GlnPro: 0.973 ± 0.058
1.433GlnGln: 1.433 ± 0.062
1.527GlnArg: 1.527 ± 0.051
3.459GlnSer: 3.459 ± 0.092
2.686GlnThr: 2.686 ± 0.081
1.987GlnVal: 1.987 ± 0.06
0.313GlnTrp: 0.313 ± 0.026
1.521GlnTyr: 1.521 ± 0.055
0.0GlnXaa: 0.0 ± 0.0
Arg
2.729ArgAla: 2.729 ± 0.075
0.33ArgCys: 0.33 ± 0.029
2.412ArgAsp: 2.412 ± 0.082
2.909ArgGlu: 2.909 ± 0.091
2.292ArgPhe: 2.292 ± 0.072
2.329ArgGly: 2.329 ± 0.074
0.771ArgHis: 0.771 ± 0.039
3.463ArgIle: 3.463 ± 0.085
2.165ArgLys: 2.165 ± 0.064
3.774ArgLeu: 3.774 ± 0.09
0.777ArgMet: 0.777 ± 0.038
1.723ArgAsn: 1.723 ± 0.067
0.954ArgPro: 0.954 ± 0.041
1.307ArgGln: 1.307 ± 0.049
1.317ArgArg: 1.317 ± 0.056
1.962ArgSer: 1.962 ± 0.071
1.723ArgThr: 1.723 ± 0.054
2.655ArgVal: 2.655 ± 0.069
0.212ArgTrp: 0.212 ± 0.023
1.843ArgTyr: 1.843 ± 0.06
0.0ArgXaa: 0.0 ± 0.0
Ser
5.063SerAla: 5.063 ± 0.104
0.691SerCys: 0.691 ± 0.041
3.193SerAsp: 3.193 ± 0.076
3.137SerGlu: 3.137 ± 0.084
3.785SerPhe: 3.785 ± 0.096
4.479SerGly: 4.479 ± 0.104
1.75SerHis: 1.75 ± 0.059
5.685SerIle: 5.685 ± 0.109
5.075SerLys: 5.075 ± 0.101
7.504SerLeu: 7.504 ± 0.141
1.814SerMet: 1.814 ± 0.065
3.01SerAsn: 3.01 ± 0.09
2.208SerPro: 2.208 ± 0.07
3.109SerGln: 3.109 ± 0.077
2.129SerArg: 2.129 ± 0.061
4.286SerSer: 4.286 ± 0.12
3.61SerThr: 3.61 ± 0.098
4.397SerVal: 4.397 ± 0.097
0.513SerTrp: 0.513 ± 0.032
2.77SerTyr: 2.77 ± 0.072
0.0SerXaa: 0.0 ± 0.0
Thr
2.371ThrAla: 2.371 ± 0.066
0.468ThrCys: 0.468 ± 0.031
2.138ThrAsp: 2.138 ± 0.061
1.843ThrGlu: 1.843 ± 0.062
2.412ThrPhe: 2.412 ± 0.072
2.257ThrGly: 2.257 ± 0.079
2.09ThrHis: 2.09 ± 0.071
4.189ThrIle: 4.189 ± 0.098
4.098ThrLys: 4.098 ± 0.083
7.145ThrLeu: 7.145 ± 0.157
1.111ThrMet: 1.111 ± 0.045
2.69ThrAsn: 2.69 ± 0.085
3.105ThrPro: 3.105 ± 0.085
4.465ThrGln: 4.465 ± 0.117
1.95ThrArg: 1.95 ± 0.062
3.243ThrSer: 3.243 ± 0.097
3.102ThrThr: 3.102 ± 0.114
0.709ThrVal: 0.709 ± 0.053
0.301ThrTrp: 0.301 ± 0.027
2.199ThrTyr: 2.199 ± 0.07
0.0ThrXaa: 0.0 ± 0.0
Val
4.583ValAla: 4.583 ± 0.102
1.299ValCys: 1.299 ± 0.051
3.072ValAsp: 3.072 ± 0.075
3.144ValGlu: 3.144 ± 0.087
3.537ValPhe: 3.537 ± 0.105
4.498ValGly: 4.498 ± 0.099
1.037ValHis: 1.037 ± 0.05
4.556ValIle: 4.556 ± 0.102
2.768ValLys: 2.768 ± 0.095
6.741ValLeu: 6.741 ± 0.118
1.354ValMet: 1.354 ± 0.06
2.156ValAsn: 2.156 ± 0.079
1.67ValPro: 1.67 ± 0.057
2.03ValGln: 2.03 ± 0.067
2.804ValArg: 2.804 ± 0.086
4.079ValSer: 4.079 ± 0.105
1.882ValThr: 1.882 ± 0.057
4.415ValVal: 4.415 ± 0.116
0.554ValTrp: 0.554 ± 0.029
2.265ValTyr: 2.265 ± 0.071
0.0ValXaa: 0.0 ± 0.0
Trp
0.54TrpAla: 0.54 ± 0.035
0.132TrpCys: 0.132 ± 0.015
0.396TrpAsp: 0.396 ± 0.028
0.548TrpGlu: 0.548 ± 0.036
0.379TrpPhe: 0.379 ± 0.025
0.555TrpGly: 0.555 ± 0.032
0.274TrpHis: 0.274 ± 0.024
0.655TrpIle: 0.655 ± 0.039
0.344TrpLys: 0.344 ± 0.029
0.954TrpLeu: 0.954 ± 0.038
0.144TrpMet: 0.144 ± 0.016
0.386TrpAsn: 0.386 ± 0.031
0.089TrpPro: 0.089 ± 0.014
0.418TrpGln: 0.418 ± 0.026
0.379TrpArg: 0.379 ± 0.026
0.435TrpSer: 0.435 ± 0.029
0.2TrpThr: 0.2 ± 0.019
0.489TrpVal: 0.489 ± 0.032
0.136TrpTrp: 0.136 ± 0.019
0.352TrpTyr: 0.352 ± 0.026
0.0TrpXaa: 0.0 ± 0.0
Tyr
3.265TyrAla: 3.265 ± 0.085
0.497TyrCys: 0.497 ± 0.037
2.189TyrAsp: 2.189 ± 0.065
2.659TyrGlu: 2.659 ± 0.089
2.253TyrPhe: 2.253 ± 0.072
2.684TyrGly: 2.684 ± 0.068
0.825TyrHis: 0.825 ± 0.038
2.904TyrIle: 2.904 ± 0.083
2.865TyrLys: 2.865 ± 0.083
3.521TyrLeu: 3.521 ± 0.082
0.845TyrMet: 0.845 ± 0.043
1.997TyrAsn: 1.997 ± 0.059
1.624TyrPro: 1.624 ± 0.058
1.494TyrGln: 1.494 ± 0.054
1.606TyrArg: 1.606 ± 0.065
1.993TyrSer: 1.993 ± 0.06
2.333TyrThr: 2.333 ± 0.075
2.216TyrVal: 2.216 ± 0.068
0.307TyrTrp: 0.307 ± 0.027
1.618TyrTyr: 1.618 ± 0.073
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 1662 proteins (514895 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