Amino acid dipepetide frequency for Helicobacter ganmani

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
3.636AlaAla: 3.636 ± 0.116
0.943AlaCys: 0.943 ± 0.051
2.425AlaAsp: 2.425 ± 0.076
3.592AlaGlu: 3.592 ± 0.091
3.808AlaPhe: 3.808 ± 0.1
3.928AlaGly: 3.928 ± 0.105
1.373AlaHis: 1.373 ± 0.057
5.919AlaIle: 5.919 ± 0.114
6.844AlaLys: 6.844 ± 0.134
9.246AlaLeu: 9.246 ± 0.14
2.008AlaMet: 2.008 ± 0.07
3.804AlaAsn: 3.804 ± 0.084
2.211AlaPro: 2.211 ± 0.058
3.786AlaGln: 3.786 ± 0.076
3.031AlaArg: 3.031 ± 0.082
4.005AlaSer: 4.005 ± 0.104
3.391AlaThr: 3.391 ± 0.093
3.573AlaVal: 3.573 ± 0.097
0.493AlaTrp: 0.493 ± 0.03
2.577AlaTyr: 2.577 ± 0.069
0.0AlaXaa: 0.0 ± 0.0
Cys
1.255CysAla: 1.255 ± 0.047
0.164CysCys: 0.164 ± 0.017
0.683CysAsp: 0.683 ± 0.04
1.026CysGlu: 1.026 ± 0.048
0.803CysPhe: 0.803 ± 0.036
1.229CysGly: 1.229 ± 0.051
0.251CysHis: 0.251 ± 0.025
0.934CysIle: 0.934 ± 0.045
0.943CysLys: 0.943 ± 0.042
1.192CysLeu: 1.192 ± 0.054
0.244CysMet: 0.244 ± 0.022
0.554CysAsn: 0.554 ± 0.035
0.449CysPro: 0.449 ± 0.033
0.36CysGln: 0.36 ± 0.028
0.303CysArg: 0.303 ± 0.026
0.681CysSer: 0.681 ± 0.033
0.43CysThr: 0.43 ± 0.03
1.008CysVal: 1.008 ± 0.047
0.089CysTrp: 0.089 ± 0.012
0.439CysTyr: 0.439 ± 0.026
0.0CysXaa: 0.0 ± 0.0
Asp
2.475AspAla: 2.475 ± 0.076
0.783AspCys: 0.783 ± 0.041
1.578AspAsp: 1.578 ± 0.061
3.225AspGlu: 3.225 ± 0.089
3.703AspPhe: 3.703 ± 0.097
2.257AspGly: 2.257 ± 0.086
0.367AspHis: 0.367 ± 0.027
3.614AspIle: 3.614 ± 0.089
4.053AspLys: 4.053 ± 0.103
5.059AspLeu: 5.059 ± 0.105
1.004AspMet: 1.004 ± 0.038
2.06AspAsn: 2.06 ± 0.07
1.017AspPro: 1.017 ± 0.045
0.552AspGln: 0.552 ± 0.033
1.44AspArg: 1.44 ± 0.055
4.677AspSer: 4.677 ± 0.109
2.073AspThr: 2.073 ± 0.067
2.206AspVal: 2.206 ± 0.081
0.377AspTrp: 0.377 ± 0.024
2.215AspTyr: 2.215 ± 0.065
0.0AspXaa: 0.0 ± 0.0
Glu
4.827GluAla: 4.827 ± 0.094
0.821GluCys: 0.821 ± 0.042
2.835GluAsp: 2.835 ± 0.094
5.369GluGlu: 5.369 ± 0.151
3.653GluPhe: 3.653 ± 0.089
3.5GluGly: 3.5 ± 0.087
1.111GluHis: 1.111 ± 0.047
7.684GluIle: 7.684 ± 0.133
5.619GluLys: 5.619 ± 0.127
6.106GluLeu: 6.106 ± 0.114
1.879GluMet: 1.879 ± 0.062
4.707GluAsn: 4.707 ± 0.105
1.434GluPro: 1.434 ± 0.053
2.699GluGln: 2.699 ± 0.084
3.009GluArg: 3.009 ± 0.082
6.27GluSer: 6.27 ± 0.132
2.538GluThr: 2.538 ± 0.077
4.686GluVal: 4.686 ± 0.094
0.543GluTrp: 0.543 ± 0.032
2.309GluTyr: 2.309 ± 0.069
0.0GluXaa: 0.0 ± 0.0
Phe
4.179PheAla: 4.179 ± 0.095
1.039PheCys: 1.039 ± 0.046
2.789PheAsp: 2.789 ± 0.081
3.426PheGlu: 3.426 ± 0.089
2.992PhePhe: 2.992 ± 0.105
4.188PheGly: 4.188 ± 0.112
0.89PheHis: 0.89 ± 0.045
3.871PheIle: 3.871 ± 0.099
3.802PheLys: 3.802 ± 0.094
6.274PheLeu: 6.274 ± 0.152
1.211PheMet: 1.211 ± 0.046
2.545PheAsn: 2.545 ± 0.075
1.401PhePro: 1.401 ± 0.053
1.384PheGln: 1.384 ± 0.054
1.589PheArg: 1.589 ± 0.056
3.909PheSer: 3.909 ± 0.087
2.119PheThr: 2.119 ± 0.066
3.605PheVal: 3.605 ± 0.099
0.524PheTrp: 0.524 ± 0.038
2.213PheTyr: 2.213 ± 0.067
0.0PheXaa: 0.0 ± 0.0
Gly
4.718GlyAla: 4.718 ± 0.118
0.711GlyCys: 0.711 ± 0.036
2.913GlyAsp: 2.913 ± 0.078
4.399GlyGlu: 4.399 ± 0.111
3.932GlyPhe: 3.932 ± 0.092
4.594GlyGly: 4.594 ± 0.109
0.963GlyHis: 0.963 ± 0.041
6.517GlyIle: 6.517 ± 0.11
4.546GlyLys: 4.546 ± 0.085
5.368GlyLeu: 5.368 ± 0.106
1.51GlyMet: 1.51 ± 0.061
2.741GlyAsn: 2.741 ± 0.084
0.718GlyPro: 0.718 ± 0.043
1.589GlyGln: 1.589 ± 0.052
2.101GlyArg: 2.101 ± 0.066
3.474GlySer: 3.474 ± 0.084
2.3GlyThr: 2.3 ± 0.073
4.389GlyVal: 4.389 ± 0.117
0.393GlyTrp: 0.393 ± 0.032
2.448GlyTyr: 2.448 ± 0.081
0.0GlyXaa: 0.0 ± 0.0
His
0.812HisAla: 0.812 ± 0.038
0.373HisCys: 0.373 ± 0.028
0.572HisAsp: 0.572 ± 0.032
0.607HisGlu: 0.607 ± 0.035
1.41HisPhe: 1.41 ± 0.058
0.784HisGly: 0.784 ± 0.041
0.506HisHis: 0.506 ± 0.036
1.536HisIle: 1.536 ± 0.051
1.683HisLys: 1.683 ± 0.053
2.357HisLeu: 2.357 ± 0.073
0.262HisMet: 0.262 ± 0.021
0.987HisAsn: 0.987 ± 0.045
0.736HisPro: 0.736 ± 0.033
0.873HisGln: 0.873 ± 0.033
0.733HisArg: 0.733 ± 0.035
1.349HisSer: 1.349 ± 0.051
1.071HisThr: 1.071 ± 0.045
0.279HisVal: 0.279 ± 0.023
0.14HisTrp: 0.14 ± 0.016
0.919HisTyr: 0.919 ± 0.038
0.0HisXaa: 0.0 ± 0.0
Ile
7.285IleAla: 7.285 ± 0.13
1.13IleCys: 1.13 ± 0.05
3.686IleAsp: 3.686 ± 0.09
5.451IleGlu: 5.451 ± 0.116
4.194IlePhe: 4.194 ± 0.119
5.165IleGly: 5.165 ± 0.121
1.467IleHis: 1.467 ± 0.048
5.089IleIle: 5.089 ± 0.113
5.753IleLys: 5.753 ± 0.126
10.377IleLeu: 10.377 ± 0.182
1.445IleMet: 1.445 ± 0.053
3.644IleAsn: 3.644 ± 0.101
3.651IlePro: 3.651 ± 0.098
3.105IleGln: 3.105 ± 0.082
2.542IleArg: 2.542 ± 0.079
5.041IleSer: 5.041 ± 0.098
4.112IleThr: 4.112 ± 0.096
4.923IleVal: 4.923 ± 0.11
0.578IleTrp: 0.578 ± 0.037
2.909IleTyr: 2.909 ± 0.072
0.0IleXaa: 0.0 ± 0.0
Lys
5.421LysAla: 5.421 ± 0.111
0.663LysCys: 0.663 ± 0.039
4.474LysAsp: 4.474 ± 0.129
8.583LysGlu: 8.583 ± 0.164
2.724LysPhe: 2.724 ± 0.067
4.349LysGly: 4.349 ± 0.092
1.298LysHis: 1.298 ± 0.044
7.573LysIle: 7.573 ± 0.133
5.853LysLys: 5.853 ± 0.133
6.565LysLeu: 6.565 ± 0.114
1.951LysMet: 1.951 ± 0.062
5.452LysAsn: 5.452 ± 0.102
2.328LysPro: 2.328 ± 0.069
3.26LysGln: 3.26 ± 0.081
3.033LysArg: 3.033 ± 0.076
4.98LysSer: 4.98 ± 0.102
4.026LysThr: 4.026 ± 0.096
4.267LysVal: 4.267 ± 0.088
0.521LysTrp: 0.521 ± 0.033
2.516LysTyr: 2.516 ± 0.07
0.0LysXaa: 0.0 ± 0.0
Leu
7.503LeuAla: 7.503 ± 0.133
1.742LeuCys: 1.742 ± 0.058
5.414LeuAsp: 5.414 ± 0.107
9.574LeuGlu: 9.574 ± 0.164
5.327LeuPhe: 5.327 ± 0.127
7.11LeuGly: 7.11 ± 0.146
1.942LeuHis: 1.942 ± 0.06
6.936LeuIle: 6.936 ± 0.137
9.437LeuLys: 9.437 ± 0.141
11.051LeuLeu: 11.051 ± 0.232
2.254LeuMet: 2.254 ± 0.066
5.923LeuAsn: 5.923 ± 0.131
3.948LeuPro: 3.948 ± 0.094
5.246LeuGln: 5.246 ± 0.111
4.153LeuArg: 4.153 ± 0.079
7.918LeuSer: 7.918 ± 0.148
4.327LeuThr: 4.327 ± 0.093
5.332LeuVal: 5.332 ± 0.11
0.851LeuTrp: 0.851 ± 0.04
3.631LeuTyr: 3.631 ± 0.086
0.0LeuXaa: 0.0 ± 0.0
Met
1.526MetAla: 1.526 ± 0.06
0.257MetCys: 0.257 ± 0.023
0.997MetAsp: 0.997 ± 0.046
1.598MetGlu: 1.598 ± 0.059
0.882MetPhe: 0.882 ± 0.047
1.445MetGly: 1.445 ± 0.055
0.345MetHis: 0.345 ± 0.023
1.766MetIle: 1.766 ± 0.069
1.486MetLys: 1.486 ± 0.054
2.597MetLeu: 2.597 ± 0.084
0.478MetMet: 0.478 ± 0.03
0.995MetAsn: 0.995 ± 0.044
1.004MetPro: 1.004 ± 0.041
1.665MetGln: 1.665 ± 0.058
1.17MetArg: 1.17 ± 0.048
1.272MetSer: 1.272 ± 0.055
0.77MetThr: 0.77 ± 0.04
1.251MetVal: 1.251 ± 0.053
0.157MetTrp: 0.157 ± 0.019
0.484MetTyr: 0.484 ± 0.027
0.0MetXaa: 0.0 ± 0.0
Asn
5.035AsnAla: 5.035 ± 0.097
0.497AsnCys: 0.497 ± 0.033
2.014AsnAsp: 2.014 ± 0.063
3.37AsnGlu: 3.37 ± 0.081
2.955AsnPhe: 2.955 ± 0.072
2.999AsnGly: 2.999 ± 0.093
1.115AsnHis: 1.115 ± 0.042
4.092AsnIle: 4.092 ± 0.095
3.535AsnLys: 3.535 ± 0.089
6.9AsnLeu: 6.9 ± 0.134
0.89AsnMet: 0.89 ± 0.041
2.403AsnAsn: 2.403 ± 0.08
3.055AsnPro: 3.055 ± 0.077
2.215AsnGln: 2.215 ± 0.071
1.779AsnArg: 1.779 ± 0.054
3.094AsnSer: 3.094 ± 0.086
2.735AsnThr: 2.735 ± 0.069
3.023AsnVal: 3.023 ± 0.072
0.284AsnTrp: 0.284 ± 0.025
2.053AsnTyr: 2.053 ± 0.07
0.0AsnXaa: 0.0 ± 0.0
Pro
1.661ProAla: 1.661 ± 0.051
0.367ProCys: 0.367 ± 0.026
1.211ProAsp: 1.211 ± 0.047
1.471ProGlu: 1.471 ± 0.058
1.988ProPhe: 1.988 ± 0.065
1.011ProGly: 1.011 ± 0.048
0.808ProHis: 0.808 ± 0.042
2.643ProIle: 2.643 ± 0.069
3.4ProLys: 3.4 ± 0.078
4.175ProLeu: 4.175 ± 0.086
0.666ProMet: 0.666 ± 0.029
2.307ProAsn: 2.307 ± 0.065
1.05ProPro: 1.05 ± 0.053
1.844ProGln: 1.844 ± 0.061
0.919ProArg: 0.919 ± 0.041
2.082ProSer: 2.082 ± 0.069
1.859ProThr: 1.859 ± 0.057
1.303ProVal: 1.303 ± 0.066
0.186ProTrp: 0.186 ± 0.02
1.51ProTyr: 1.51 ± 0.055
0.0ProXaa: 0.0 ± 0.0
Gln
2.737GlnAla: 2.737 ± 0.076
0.377GlnCys: 0.377 ± 0.027
2.337GlnAsp: 2.337 ± 0.068
4.301GlnGlu: 4.301 ± 0.116
1.357GlnPhe: 1.357 ± 0.047
2.148GlnGly: 2.148 ± 0.065
0.572GlnHis: 0.572 ± 0.033
3.533GlnIle: 3.533 ± 0.083
4.369GlnLys: 4.369 ± 0.098
2.562GlnLeu: 2.562 ± 0.069
1.045GlnMet: 1.045 ± 0.041
3.745GlnAsn: 3.745 ± 0.091
0.882GlnPro: 0.882 ± 0.045
1.473GlnGln: 1.473 ± 0.059
1.528GlnArg: 1.528 ± 0.059
3.053GlnSer: 3.053 ± 0.082
2.385GlnThr: 2.385 ± 0.081
1.986GlnVal: 1.986 ± 0.062
0.325GlnTrp: 0.325 ± 0.026
1.144GlnTyr: 1.144 ± 0.051
0.0GlnXaa: 0.0 ± 0.0
Arg
2.558ArgAla: 2.558 ± 0.071
0.277ArgCys: 0.277 ± 0.023
1.851ArgAsp: 1.851 ± 0.06
3.097ArgGlu: 3.097 ± 0.075
2.237ArgPhe: 2.237 ± 0.067
2.208ArgGly: 2.208 ± 0.063
0.629ArgHis: 0.629 ± 0.035
3.728ArgIle: 3.728 ± 0.088
2.708ArgLys: 2.708 ± 0.066
3.732ArgLeu: 3.732 ± 0.093
0.869ArgMet: 0.869 ± 0.036
2.038ArgAsn: 2.038 ± 0.064
0.892ArgPro: 0.892 ± 0.042
1.255ArgGln: 1.255 ± 0.045
1.259ArgArg: 1.259 ± 0.049
1.763ArgSer: 1.763 ± 0.058
1.408ArgThr: 1.408 ± 0.045
2.246ArgVal: 2.246 ± 0.069
0.225ArgTrp: 0.225 ± 0.022
1.48ArgTyr: 1.48 ± 0.053
0.0ArgXaa: 0.0 ± 0.0
Ser
4.834SerAla: 4.834 ± 0.101
0.84SerCys: 0.84 ± 0.043
2.564SerAsp: 2.564 ± 0.07
3.573SerGlu: 3.573 ± 0.09
3.926SerPhe: 3.926 ± 0.089
4.458SerGly: 4.458 ± 0.097
1.364SerHis: 1.364 ± 0.051
5.176SerIle: 5.176 ± 0.104
5.5SerLys: 5.5 ± 0.111
8.618SerLeu: 8.618 ± 0.163
1.453SerMet: 1.453 ± 0.059
3.204SerAsn: 3.204 ± 0.082
2.16SerPro: 2.16 ± 0.063
3.156SerGln: 3.156 ± 0.08
2.062SerArg: 2.062 ± 0.058
4.007SerSer: 4.007 ± 0.102
2.933SerThr: 2.933 ± 0.083
3.614SerVal: 3.614 ± 0.081
0.569SerTrp: 0.569 ± 0.03
2.675SerTyr: 2.675 ± 0.079
0.0SerXaa: 0.0 ± 0.0
Thr
2.588ThrAla: 2.588 ± 0.075
0.461ThrCys: 0.461 ± 0.028
1.624ThrAsp: 1.624 ± 0.066
2.235ThrGlu: 2.235 ± 0.059
2.355ThrPhe: 2.355 ± 0.065
2.065ThrGly: 2.065 ± 0.069
1.124ThrHis: 1.124 ± 0.042
3.703ThrIle: 3.703 ± 0.092
3.743ThrLys: 3.743 ± 0.073
6.242ThrLeu: 6.242 ± 0.108
0.986ThrMet: 0.986 ± 0.048
2.324ThrAsn: 2.324 ± 0.068
2.4ThrPro: 2.4 ± 0.072
2.985ThrGln: 2.985 ± 0.074
1.746ThrArg: 1.746 ± 0.055
2.951ThrSer: 2.951 ± 0.075
2.42ThrThr: 2.42 ± 0.064
0.749ThrVal: 0.749 ± 0.05
0.299ThrTrp: 0.299 ± 0.023
1.621ThrTyr: 1.621 ± 0.061
0.0ThrXaa: 0.0 ± 0.0
Val
4.428ValAla: 4.428 ± 0.117
0.958ValCys: 0.958 ± 0.051
2.553ValAsp: 2.553 ± 0.082
3.896ValGlu: 3.896 ± 0.084
2.89ValPhe: 2.89 ± 0.068
3.898ValGly: 3.898 ± 0.103
0.869ValHis: 0.869 ± 0.038
4.242ValIle: 4.242 ± 0.103
3.389ValLys: 3.389 ± 0.085
6.274ValLeu: 6.274 ± 0.117
1.296ValMet: 1.296 ± 0.053
2.278ValAsn: 2.278 ± 0.066
1.565ValPro: 1.565 ± 0.063
2.093ValGln: 2.093 ± 0.063
2.268ValArg: 2.268 ± 0.068
3.638ValSer: 3.638 ± 0.086
1.785ValThr: 1.785 ± 0.066
3.93ValVal: 3.93 ± 0.122
0.467ValTrp: 0.467 ± 0.031
1.717ValTyr: 1.717 ± 0.058
0.0ValXaa: 0.0 ± 0.0
Trp
0.395TrpAla: 0.395 ± 0.027
0.109TrpCys: 0.109 ± 0.014
0.41TrpAsp: 0.41 ± 0.026
0.476TrpGlu: 0.476 ± 0.031
0.351TrpPhe: 0.351 ± 0.026
0.561TrpGly: 0.561 ± 0.035
0.207TrpHis: 0.207 ± 0.022
0.725TrpIle: 0.725 ± 0.039
0.399TrpLys: 0.399 ± 0.028
0.954TrpLeu: 0.954 ± 0.045
0.135TrpMet: 0.135 ± 0.016
0.476TrpAsn: 0.476 ± 0.032
0.054TrpPro: 0.054 ± 0.01
0.386TrpGln: 0.386 ± 0.028
0.332TrpArg: 0.332 ± 0.023
0.358TrpSer: 0.358 ± 0.029
0.277TrpThr: 0.277 ± 0.021
0.465TrpVal: 0.465 ± 0.027
0.098TrpTrp: 0.098 ± 0.014
0.258TrpTyr: 0.258 ± 0.023
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.719TyrAla: 2.719 ± 0.074
0.526TyrCys: 0.526 ± 0.035
1.805TyrAsp: 1.805 ± 0.063
2.328TyrGlu: 2.328 ± 0.066
2.464TyrPhe: 2.464 ± 0.08
2.424TyrGly: 2.424 ± 0.07
0.788TyrHis: 0.788 ± 0.038
2.263TyrIle: 2.263 ± 0.067
2.772TyrLys: 2.772 ± 0.078
3.97TyrLeu: 3.97 ± 0.085
0.559TyrMet: 0.559 ± 0.034
1.855TyrAsn: 1.855 ± 0.058
1.51TyrPro: 1.51 ± 0.046
1.934TyrGln: 1.934 ± 0.069
1.466TyrArg: 1.466 ± 0.055
2.161TyrSer: 2.161 ± 0.062
1.665TyrThr: 1.665 ± 0.059
1.598TyrVal: 1.598 ± 0.059
0.308TyrTrp: 0.308 ± 0.026
1.519TyrTyr: 1.519 ± 0.059
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 1783 proteins (541776 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