Amino acid dipepetide frequency for Helicobacter sp. 15-1451

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
3.925AlaAla: 3.925 ± 0.116
0.857AlaCys: 0.857 ± 0.047
2.904AlaAsp: 2.904 ± 0.087
3.885AlaGlu: 3.885 ± 0.083
3.6AlaPhe: 3.6 ± 0.082
3.925AlaGly: 3.925 ± 0.101
1.364AlaHis: 1.364 ± 0.05
6.383AlaIle: 6.383 ± 0.11
5.747AlaLys: 5.747 ± 0.115
8.027AlaLeu: 8.027 ± 0.14
1.912AlaMet: 1.912 ± 0.065
3.223AlaAsn: 3.223 ± 0.069
1.896AlaPro: 1.896 ± 0.059
2.75AlaGln: 2.75 ± 0.072
2.592AlaArg: 2.592 ± 0.073
3.908AlaSer: 3.908 ± 0.09
3.671AlaThr: 3.671 ± 0.084
3.656AlaVal: 3.656 ± 0.1
0.434AlaTrp: 0.434 ± 0.027
2.565AlaTyr: 2.565 ± 0.069
0.0AlaXaa: 0.0 ± 0.0
Cys
0.867CysAla: 0.867 ± 0.038
0.192CysCys: 0.192 ± 0.018
0.687CysAsp: 0.687 ± 0.039
0.831CysGlu: 0.831 ± 0.04
0.741CysPhe: 0.741 ± 0.038
1.018CysGly: 1.018 ± 0.043
0.319CysHis: 0.319 ± 0.023
0.918CysIle: 0.918 ± 0.044
0.826CysLys: 0.826 ± 0.04
1.194CysLeu: 1.194 ± 0.051
0.275CysMet: 0.275 ± 0.022
0.538CysAsn: 0.538 ± 0.033
0.489CysPro: 0.489 ± 0.029
0.368CysGln: 0.368 ± 0.026
0.373CysArg: 0.373 ± 0.024
0.857CysSer: 0.857 ± 0.039
0.426CysThr: 0.426 ± 0.029
0.816CysVal: 0.816 ± 0.037
0.083CysTrp: 0.083 ± 0.013
0.468CysTyr: 0.468 ± 0.029
0.0CysXaa: 0.0 ± 0.0
Asp
2.824AspAla: 2.824 ± 0.079
0.57AspCys: 0.57 ± 0.03
2.304AspAsp: 2.304 ± 0.075
3.576AspGlu: 3.576 ± 0.083
3.106AspPhe: 3.106 ± 0.072
2.977AspGly: 2.977 ± 0.083
0.619AspHis: 0.619 ± 0.037
4.843AspIle: 4.843 ± 0.093
3.808AspLys: 3.808 ± 0.098
4.477AspLeu: 4.477 ± 0.104
1.221AspMet: 1.221 ± 0.047
2.142AspAsn: 2.142 ± 0.068
1.228AspPro: 1.228 ± 0.052
0.85AspGln: 0.85 ± 0.047
1.739AspArg: 1.739 ± 0.058
4.215AspSer: 4.215 ± 0.09
2.414AspThr: 2.414 ± 0.067
2.439AspVal: 2.439 ± 0.065
0.407AspTrp: 0.407 ± 0.026
2.07AspTyr: 2.07 ± 0.06
0.0AspXaa: 0.0 ± 0.0
Glu
4.724GluAla: 4.724 ± 0.101
1.013GluCys: 1.013 ± 0.044
2.687GluAsp: 2.687 ± 0.077
5.798GluGlu: 5.798 ± 0.136
3.518GluPhe: 3.518 ± 0.081
3.795GluGly: 3.795 ± 0.083
1.26GluHis: 1.26 ± 0.045
6.982GluIle: 6.982 ± 0.143
5.338GluLys: 5.338 ± 0.108
6.5GluLeu: 6.5 ± 0.111
1.798GluMet: 1.798 ± 0.056
3.913GluAsn: 3.913 ± 0.087
1.474GluPro: 1.474 ± 0.054
2.991GluGln: 2.991 ± 0.081
3.254GluArg: 3.254 ± 0.08
5.281GluSer: 5.281 ± 0.106
2.4GluThr: 2.4 ± 0.059
4.712GluVal: 4.712 ± 0.107
0.728GluTrp: 0.728 ± 0.035
2.533GluTyr: 2.533 ± 0.071
0.0GluXaa: 0.0 ± 0.0
Phe
3.545PheAla: 3.545 ± 0.073
0.987PheCys: 0.987 ± 0.045
2.668PheAsp: 2.668 ± 0.067
3.444PheGlu: 3.444 ± 0.092
3.153PhePhe: 3.153 ± 0.106
3.457PheGly: 3.457 ± 0.096
0.875PheHis: 0.875 ± 0.034
4.273PheIle: 4.273 ± 0.101
3.584PheLys: 3.584 ± 0.078
5.974PheLeu: 5.974 ± 0.129
1.298PheMet: 1.298 ± 0.047
2.399PheAsn: 2.399 ± 0.072
1.31PhePro: 1.31 ± 0.046
1.513PheGln: 1.513 ± 0.059
1.664PheArg: 1.664 ± 0.063
4.203PheSer: 4.203 ± 0.102
2.2PheThr: 2.2 ± 0.069
3.343PheVal: 3.343 ± 0.085
0.541PheTrp: 0.541 ± 0.031
2.37PheTyr: 2.37 ± 0.078
0.0PheXaa: 0.0 ± 0.0
Gly
4.371GlyAla: 4.371 ± 0.111
0.826GlyCys: 0.826 ± 0.038
3.064GlyAsp: 3.064 ± 0.075
4.349GlyGlu: 4.349 ± 0.095
3.596GlyPhe: 3.596 ± 0.086
4.741GlyGly: 4.741 ± 0.122
1.137GlyHis: 1.137 ± 0.053
5.879GlyIle: 5.879 ± 0.131
4.117GlyLys: 4.117 ± 0.092
5.404GlyLeu: 5.404 ± 0.112
1.564GlyMet: 1.564 ± 0.059
2.711GlyAsn: 2.711 ± 0.083
0.799GlyPro: 0.799 ± 0.042
1.783GlyGln: 1.783 ± 0.057
2.399GlyArg: 2.399 ± 0.072
3.886GlySer: 3.886 ± 0.082
2.422GlyThr: 2.422 ± 0.079
4.775GlyVal: 4.775 ± 0.114
0.436GlyTrp: 0.436 ± 0.027
2.629GlyTyr: 2.629 ± 0.064
0.0GlyXaa: 0.0 ± 0.0
His
1.053HisAla: 1.053 ± 0.046
0.305HisCys: 0.305 ± 0.024
0.684HisAsp: 0.684 ± 0.033
0.801HisGlu: 0.801 ± 0.041
1.433HisPhe: 1.433 ± 0.049
0.965HisGly: 0.965 ± 0.039
0.668HisHis: 0.668 ± 0.036
2.261HisIle: 2.261 ± 0.063
1.452HisLys: 1.452 ± 0.051
2.407HisLeu: 2.407 ± 0.076
0.321HisMet: 0.321 ± 0.023
0.999HisAsn: 0.999 ± 0.047
0.797HisPro: 0.797 ± 0.039
1.067HisGln: 1.067 ± 0.043
0.884HisArg: 0.884 ± 0.036
1.827HisSer: 1.827 ± 0.06
1.221HisThr: 1.221 ± 0.048
0.524HisVal: 0.524 ± 0.028
0.153HisTrp: 0.153 ± 0.016
1.014HisTyr: 1.014 ± 0.039
0.0HisXaa: 0.0 ± 0.0
Ile
7.126IleAla: 7.126 ± 0.122
1.12IleCys: 1.12 ± 0.043
4.597IleAsp: 4.597 ± 0.081
5.907IleGlu: 5.907 ± 0.109
4.634IlePhe: 4.634 ± 0.114
4.918IleGly: 4.918 ± 0.102
1.829IleHis: 1.829 ± 0.062
6.28IleIle: 6.28 ± 0.127
5.332IleLys: 5.332 ± 0.102
9.957IleLeu: 9.957 ± 0.137
1.595IleMet: 1.595 ± 0.057
3.744IleAsn: 3.744 ± 0.076
3.637IlePro: 3.637 ± 0.089
4.319IleGln: 4.319 ± 0.09
2.914IleArg: 2.914 ± 0.074
5.501IleSer: 5.501 ± 0.103
4.339IleThr: 4.339 ± 0.085
5.13IleVal: 5.13 ± 0.095
0.604IleTrp: 0.604 ± 0.034
2.911IleTyr: 2.911 ± 0.072
0.0IleXaa: 0.0 ± 0.0
Lys
4.87LysAla: 4.87 ± 0.1
0.55LysCys: 0.55 ± 0.032
4.132LysAsp: 4.132 ± 0.091
7.413LysGlu: 7.413 ± 0.123
2.307LysPhe: 2.307 ± 0.064
4.341LysGly: 4.341 ± 0.093
1.264LysHis: 1.264 ± 0.049
6.814LysIle: 6.814 ± 0.117
6.346LysLys: 6.346 ± 0.12
5.46LysLeu: 5.46 ± 0.109
1.997LysMet: 1.997 ± 0.056
5.174LysAsn: 5.174 ± 0.11
2.168LysPro: 2.168 ± 0.068
3.554LysGln: 3.554 ± 0.086
3.148LysArg: 3.148 ± 0.07
4.305LysSer: 4.305 ± 0.089
3.345LysThr: 3.345 ± 0.088
3.8LysVal: 3.8 ± 0.089
0.426LysTrp: 0.426 ± 0.028
2.112LysTyr: 2.112 ± 0.066
0.0LysXaa: 0.0 ± 0.0
Leu
6.95LeuAla: 6.95 ± 0.125
1.489LeuCys: 1.489 ± 0.056
5.057LeuAsp: 5.057 ± 0.108
8.203LeuGlu: 8.203 ± 0.137
5.673LeuPhe: 5.673 ± 0.12
6.504LeuGly: 6.504 ± 0.131
2.054LeuHis: 2.054 ± 0.061
7.008LeuIle: 7.008 ± 0.125
8.468LeuLys: 8.468 ± 0.13
10.359LeuLeu: 10.359 ± 0.162
2.338LeuMet: 2.338 ± 0.067
5.303LeuAsn: 5.303 ± 0.103
3.769LeuPro: 3.769 ± 0.08
5.055LeuGln: 5.055 ± 0.104
4.17LeuArg: 4.17 ± 0.091
7.917LeuSer: 7.917 ± 0.126
4.246LeuThr: 4.246 ± 0.092
4.969LeuVal: 4.969 ± 0.091
0.874LeuTrp: 0.874 ± 0.05
3.764LeuTyr: 3.764 ± 0.065
0.0LeuXaa: 0.0 ± 0.0
Met
1.595MetAla: 1.595 ± 0.057
0.217MetCys: 0.217 ± 0.02
1.047MetAsp: 1.047 ± 0.04
1.354MetGlu: 1.354 ± 0.053
0.826MetPhe: 0.826 ± 0.038
1.715MetGly: 1.715 ± 0.065
0.417MetHis: 0.417 ± 0.026
1.893MetIle: 1.893 ± 0.066
1.63MetLys: 1.63 ± 0.052
2.556MetLeu: 2.556 ± 0.064
0.558MetMet: 0.558 ± 0.033
1.272MetAsn: 1.272 ± 0.045
1.036MetPro: 1.036 ± 0.044
1.486MetGln: 1.486 ± 0.05
1.259MetArg: 1.259 ± 0.042
1.601MetSer: 1.601 ± 0.054
0.885MetThr: 0.885 ± 0.037
1.311MetVal: 1.311 ± 0.052
0.156MetTrp: 0.156 ± 0.016
0.495MetTyr: 0.495 ± 0.029
0.0MetXaa: 0.0 ± 0.0
Asn
3.99AsnAla: 3.99 ± 0.087
0.436AsnCys: 0.436 ± 0.028
2.305AsnAsp: 2.305 ± 0.076
3.262AsnGlu: 3.262 ± 0.084
2.315AsnPhe: 2.315 ± 0.067
2.967AsnGly: 2.967 ± 0.085
1.243AsnHis: 1.243 ± 0.046
4.684AsnIle: 4.684 ± 0.088
3.194AsnLys: 3.194 ± 0.089
5.542AsnLeu: 5.542 ± 0.11
0.982AsnMet: 0.982 ± 0.042
2.399AsnAsn: 2.399 ± 0.086
2.422AsnPro: 2.422 ± 0.075
2.329AsnGln: 2.329 ± 0.075
2.085AsnArg: 2.085 ± 0.06
3.052AsnSer: 3.052 ± 0.078
2.468AsnThr: 2.468 ± 0.066
2.641AsnVal: 2.641 ± 0.07
0.316AsnTrp: 0.316 ± 0.022
1.723AsnTyr: 1.723 ± 0.06
0.0AsnXaa: 0.0 ± 0.0
Pro
1.701ProAla: 1.701 ± 0.057
0.336ProCys: 0.336 ± 0.026
1.299ProAsp: 1.299 ± 0.049
1.69ProGlu: 1.69 ± 0.054
2.037ProPhe: 2.037 ± 0.055
1.059ProGly: 1.059 ± 0.048
1.059ProHis: 1.059 ± 0.047
3.018ProIle: 3.018 ± 0.071
2.687ProLys: 2.687 ± 0.069
3.969ProLeu: 3.969 ± 0.093
0.679ProMet: 0.679 ± 0.039
1.796ProAsn: 1.796 ± 0.057
1.296ProPro: 1.296 ± 0.066
1.671ProGln: 1.671 ± 0.055
0.965ProArg: 0.965 ± 0.041
2.253ProSer: 2.253 ± 0.061
1.961ProThr: 1.961 ± 0.058
1.635ProVal: 1.635 ± 0.058
0.17ProTrp: 0.17 ± 0.017
1.503ProTyr: 1.503 ± 0.059
0.0ProXaa: 0.0 ± 0.0
Gln
2.626GlnAla: 2.626 ± 0.073
0.436GlnCys: 0.436 ± 0.03
2.219GlnAsp: 2.219 ± 0.059
4.334GlnGlu: 4.334 ± 0.092
1.515GlnPhe: 1.515 ± 0.048
2.224GlnGly: 2.224 ± 0.062
0.897GlnHis: 0.897 ± 0.039
3.601GlnIle: 3.601 ± 0.082
4.351GlnLys: 4.351 ± 0.09
3.164GlnLeu: 3.164 ± 0.086
0.955GlnMet: 0.955 ± 0.04
2.969GlnAsn: 2.969 ± 0.084
1.147GlnPro: 1.147 ± 0.054
2.361GlnGln: 2.361 ± 0.076
1.859GlnArg: 1.859 ± 0.054
2.826GlnSer: 2.826 ± 0.079
2.19GlnThr: 2.19 ± 0.062
1.885GlnVal: 1.885 ± 0.054
0.37GlnTrp: 0.37 ± 0.024
1.444GlnTyr: 1.444 ± 0.049
0.0GlnXaa: 0.0 ± 0.0
Arg
2.232ArgAla: 2.232 ± 0.074
0.365ArgCys: 0.365 ± 0.025
2.075ArgAsp: 2.075 ± 0.065
3.123ArgGlu: 3.123 ± 0.084
2.363ArgPhe: 2.363 ± 0.063
2.324ArgGly: 2.324 ± 0.058
0.826ArgHis: 0.826 ± 0.038
3.985ArgIle: 3.985 ± 0.09
2.582ArgLys: 2.582 ± 0.064
4.246ArgLeu: 4.246 ± 0.082
1.031ArgMet: 1.031 ± 0.045
1.964ArgAsn: 1.964 ± 0.056
1.092ArgPro: 1.092 ± 0.041
1.571ArgGln: 1.571 ± 0.052
1.572ArgArg: 1.572 ± 0.048
2.19ArgSer: 2.19 ± 0.066
1.455ArgThr: 1.455 ± 0.045
2.5ArgVal: 2.5 ± 0.066
0.338ArgTrp: 0.338 ± 0.025
1.732ArgTyr: 1.732 ± 0.059
0.0ArgXaa: 0.0 ± 0.0
Ser
4.263SerAla: 4.263 ± 0.092
0.751SerCys: 0.751 ± 0.04
3.067SerAsp: 3.067 ± 0.075
3.82SerGlu: 3.82 ± 0.102
4.142SerPhe: 4.142 ± 0.085
4.356SerGly: 4.356 ± 0.11
1.542SerHis: 1.542 ± 0.05
5.678SerIle: 5.678 ± 0.092
4.641SerLys: 4.641 ± 0.102
8.229SerLeu: 8.229 ± 0.141
1.583SerMet: 1.583 ± 0.045
2.977SerAsn: 2.977 ± 0.067
2.4SerPro: 2.4 ± 0.061
2.85SerGln: 2.85 ± 0.072
2.47SerArg: 2.47 ± 0.056
4.845SerSer: 4.845 ± 0.088
3.009SerThr: 3.009 ± 0.082
4.336SerVal: 4.336 ± 0.091
0.536SerTrp: 0.536 ± 0.03
2.673SerTyr: 2.673 ± 0.075
0.0SerXaa: 0.0 ± 0.0
Thr
2.736ThrAla: 2.736 ± 0.079
0.373ThrCys: 0.373 ± 0.029
1.932ThrAsp: 1.932 ± 0.058
2.456ThrGlu: 2.456 ± 0.065
2.275ThrPhe: 2.275 ± 0.065
2.427ThrGly: 2.427 ± 0.079
1.325ThrHis: 1.325 ± 0.048
3.717ThrIle: 3.717 ± 0.08
3.247ThrLys: 3.247 ± 0.068
6.173ThrLeu: 6.173 ± 0.101
0.989ThrMet: 0.989 ± 0.038
2.117ThrAsn: 2.117 ± 0.062
2.528ThrPro: 2.528 ± 0.083
2.86ThrGln: 2.86 ± 0.08
1.644ThrArg: 1.644 ± 0.065
2.863ThrSer: 2.863 ± 0.077
2.619ThrThr: 2.619 ± 0.087
1.23ThrVal: 1.23 ± 0.059
0.246ThrTrp: 0.246 ± 0.021
1.562ThrTyr: 1.562 ± 0.053
0.0ThrXaa: 0.0 ± 0.0
Val
4.599ValAla: 4.599 ± 0.087
0.897ValCys: 0.897 ± 0.041
2.884ValAsp: 2.884 ± 0.074
3.569ValGlu: 3.569 ± 0.086
2.85ValPhe: 2.85 ± 0.078
4.166ValGly: 4.166 ± 0.098
1.042ValHis: 1.042 ± 0.04
4.741ValIle: 4.741 ± 0.094
3.377ValLys: 3.377 ± 0.064
5.691ValLeu: 5.691 ± 0.109
1.362ValMet: 1.362 ± 0.053
2.536ValAsn: 2.536 ± 0.068
1.7ValPro: 1.7 ± 0.058
1.973ValGln: 1.973 ± 0.058
2.38ValArg: 2.38 ± 0.072
3.857ValSer: 3.857 ± 0.088
2.08ValThr: 2.08 ± 0.067
3.937ValVal: 3.937 ± 0.094
0.451ValTrp: 0.451 ± 0.028
1.69ValTyr: 1.69 ± 0.053
0.0ValXaa: 0.0 ± 0.0
Trp
0.536TrpAla: 0.536 ± 0.035
0.097TrpCys: 0.097 ± 0.014
0.377TrpAsp: 0.377 ± 0.025
0.47TrpGlu: 0.47 ± 0.029
0.378TrpPhe: 0.378 ± 0.029
0.604TrpGly: 0.604 ± 0.032
0.182TrpHis: 0.182 ± 0.017
0.679TrpIle: 0.679 ± 0.036
0.468TrpLys: 0.468 ± 0.029
0.974TrpLeu: 0.974 ± 0.045
0.146TrpMet: 0.146 ± 0.015
0.448TrpAsn: 0.448 ± 0.027
0.066TrpPro: 0.066 ± 0.01
0.363TrpGln: 0.363 ± 0.028
0.395TrpArg: 0.395 ± 0.026
0.39TrpSer: 0.39 ± 0.025
0.244TrpThr: 0.244 ± 0.021
0.517TrpVal: 0.517 ± 0.032
0.09TrpTrp: 0.09 ± 0.013
0.265TrpTyr: 0.265 ± 0.022
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.689TyrAla: 2.689 ± 0.084
0.468TyrCys: 0.468 ± 0.027
1.842TyrAsp: 1.842 ± 0.06
2.416TyrGlu: 2.416 ± 0.063
2.341TyrPhe: 2.341 ± 0.078
2.407TyrGly: 2.407 ± 0.062
0.916TyrHis: 0.916 ± 0.042
2.757TyrIle: 2.757 ± 0.067
2.329TyrLys: 2.329 ± 0.069
3.863TyrLeu: 3.863 ± 0.089
0.707TyrMet: 0.707 ± 0.033
1.732TyrAsn: 1.732 ± 0.059
1.528TyrPro: 1.528 ± 0.052
1.659TyrGln: 1.659 ± 0.048
1.801TyrArg: 1.801 ± 0.063
2.39TyrSer: 2.39 ± 0.065
1.722TyrThr: 1.722 ± 0.06
1.625TyrVal: 1.625 ± 0.057
0.331TyrTrp: 0.331 ± 0.025
1.478TyrTyr: 1.478 ± 0.058
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 1939 proteins (589510 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