Amino acid dipepetide frequency for Brumimicrobium salinarum

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
3.865AlaAla: 3.865 ± 0.081
0.573AlaCys: 0.573 ± 0.026
3.413AlaAsp: 3.413 ± 0.057
3.865AlaGlu: 3.865 ± 0.072
3.255AlaPhe: 3.255 ± 0.054
4.05AlaGly: 4.05 ± 0.081
1.096AlaHis: 1.096 ± 0.031
4.983AlaIle: 4.983 ± 0.087
4.443AlaLys: 4.443 ± 0.079
5.813AlaLeu: 5.813 ± 0.091
1.436AlaMet: 1.436 ± 0.045
3.302AlaAsn: 3.302 ± 0.063
1.947AlaPro: 1.947 ± 0.047
2.46AlaGln: 2.46 ± 0.055
1.878AlaArg: 1.878 ± 0.045
3.804AlaSer: 3.804 ± 0.066
3.372AlaThr: 3.372 ± 0.076
3.682AlaVal: 3.682 ± 0.064
0.588AlaTrp: 0.588 ± 0.024
2.45AlaTyr: 2.45 ± 0.047
0.0AlaXaa: 0.0 ± 0.0
Cys
0.533CysAla: 0.533 ± 0.026
0.096CysCys: 0.096 ± 0.009
0.508CysAsp: 0.508 ± 0.025
0.555CysGlu: 0.555 ± 0.028
0.423CysPhe: 0.423 ± 0.023
0.646CysGly: 0.646 ± 0.029
0.157CysHis: 0.157 ± 0.016
0.541CysIle: 0.541 ± 0.023
0.499CysLys: 0.499 ± 0.023
0.639CysLeu: 0.639 ± 0.025
0.153CysMet: 0.153 ± 0.012
0.455CysAsn: 0.455 ± 0.025
0.398CysPro: 0.398 ± 0.032
0.23CysGln: 0.23 ± 0.017
0.228CysArg: 0.228 ± 0.017
0.625CysSer: 0.625 ± 0.037
0.465CysThr: 0.465 ± 0.025
0.475CysVal: 0.475 ± 0.02
0.075CysTrp: 0.075 ± 0.01
0.309CysTyr: 0.309 ± 0.018
0.0CysXaa: 0.0 ± 0.0
Asp
3.423AspAla: 3.423 ± 0.068
0.526AspCys: 0.526 ± 0.028
2.879AspAsp: 2.879 ± 0.056
4.238AspGlu: 4.238 ± 0.071
3.768AspPhe: 3.768 ± 0.082
3.906AspGly: 3.906 ± 0.096
0.945AspHis: 0.945 ± 0.034
4.315AspIle: 4.315 ± 0.071
3.983AspLys: 3.983 ± 0.075
5.509AspLeu: 5.509 ± 0.085
1.097AspMet: 1.097 ± 0.033
2.928AspAsn: 2.928 ± 0.065
1.882AspPro: 1.882 ± 0.048
2.126AspGln: 2.126 ± 0.047
1.895AspArg: 1.895 ± 0.048
3.095AspSer: 3.095 ± 0.066
2.848AspThr: 2.848 ± 0.07
3.663AspVal: 3.663 ± 0.067
0.698AspTrp: 0.698 ± 0.029
2.646AspTyr: 2.646 ± 0.054
0.0AspXaa: 0.0 ± 0.0
Glu
4.013GluAla: 4.013 ± 0.077
0.404GluCys: 0.404 ± 0.023
3.593GluAsp: 3.593 ± 0.065
5.546GluGlu: 5.546 ± 0.11
2.86GluPhe: 2.86 ± 0.063
3.931GluGly: 3.931 ± 0.065
1.234GluHis: 1.234 ± 0.037
6.002GluIle: 6.002 ± 0.083
6.269GluLys: 6.269 ± 0.093
6.539GluLeu: 6.539 ± 0.098
1.775GluMet: 1.775 ± 0.046
4.873GluAsn: 4.873 ± 0.077
1.523GluPro: 1.523 ± 0.04
2.507GluGln: 2.507 ± 0.056
2.693GluArg: 2.693 ± 0.062
3.48GluSer: 3.48 ± 0.063
3.401GluThr: 3.401 ± 0.06
4.684GluVal: 4.684 ± 0.076
0.765GluTrp: 0.765 ± 0.028
2.46GluTyr: 2.46 ± 0.054
0.0GluXaa: 0.0 ± 0.0
Phe
2.785PheAla: 2.785 ± 0.059
0.437PheCys: 0.437 ± 0.02
3.341PheAsp: 3.341 ± 0.068
3.645PheGlu: 3.645 ± 0.059
2.745PhePhe: 2.745 ± 0.059
3.494PheGly: 3.494 ± 0.071
0.91PheHis: 0.91 ± 0.032
3.982PheIle: 3.982 ± 0.072
3.857PheLys: 3.857 ± 0.076
4.572PheLeu: 4.572 ± 0.083
1.068PheMet: 1.068 ± 0.037
3.252PheAsn: 3.252 ± 0.066
1.716PhePro: 1.716 ± 0.045
1.6PheGln: 1.6 ± 0.044
1.561PheArg: 1.561 ± 0.044
4.294PheSer: 4.294 ± 0.064
3.081PheThr: 3.081 ± 0.078
3.081PheVal: 3.081 ± 0.06
0.518PheTrp: 0.518 ± 0.027
2.33PheTyr: 2.33 ± 0.053
0.0PheXaa: 0.0 ± 0.0
Gly
4.211GlyAla: 4.211 ± 0.093
0.813GlyCys: 0.813 ± 0.052
3.524GlyAsp: 3.524 ± 0.072
4.008GlyGlu: 4.008 ± 0.067
3.465GlyPhe: 3.465 ± 0.072
4.788GlyGly: 4.788 ± 0.109
1.114GlyHis: 1.114 ± 0.033
5.083GlyIle: 5.083 ± 0.079
4.837GlyLys: 4.837 ± 0.079
5.557GlyLeu: 5.557 ± 0.093
1.626GlyMet: 1.626 ± 0.046
3.772GlyAsn: 3.772 ± 0.08
1.412GlyPro: 1.412 ± 0.047
2.068GlyGln: 2.068 ± 0.049
2.186GlyArg: 2.186 ± 0.061
4.121GlySer: 4.121 ± 0.074
4.048GlyThr: 4.048 ± 0.092
4.707GlyVal: 4.707 ± 0.08
0.719GlyTrp: 0.719 ± 0.033
2.614GlyTyr: 2.614 ± 0.05
0.0GlyXaa: 0.0 ± 0.0
His
1.026HisAla: 1.026 ± 0.036
0.172HisCys: 0.172 ± 0.014
0.902HisAsp: 0.902 ± 0.033
1.126HisGlu: 1.126 ± 0.039
1.282HisPhe: 1.282 ± 0.036
1.173HisGly: 1.173 ± 0.036
0.515HisHis: 0.515 ± 0.022
1.42HisIle: 1.42 ± 0.04
1.239HisLys: 1.239 ± 0.035
1.865HisLeu: 1.865 ± 0.049
0.299HisMet: 0.299 ± 0.018
0.974HisAsn: 0.974 ± 0.036
0.984HisPro: 0.984 ± 0.035
0.86HisGln: 0.86 ± 0.036
0.687HisArg: 0.687 ± 0.027
1.089HisSer: 1.089 ± 0.03
1.037HisThr: 1.037 ± 0.033
1.064HisVal: 1.064 ± 0.036
0.211HisTrp: 0.211 ± 0.016
0.868HisTyr: 0.868 ± 0.025
0.0HisXaa: 0.0 ± 0.0
Ile
5.168IleAla: 5.168 ± 0.076
0.672IleCys: 0.672 ± 0.029
5.307IleAsp: 5.307 ± 0.078
5.682IleGlu: 5.682 ± 0.072
3.485IlePhe: 3.485 ± 0.067
5.243IleGly: 5.243 ± 0.087
1.579IleHis: 1.579 ± 0.039
5.946IleIle: 5.946 ± 0.103
5.641IleLys: 5.641 ± 0.09
6.744IleLeu: 6.744 ± 0.106
1.353IleMet: 1.353 ± 0.037
4.805IleAsn: 4.805 ± 0.076
3.092IlePro: 3.092 ± 0.057
2.974IleGln: 2.974 ± 0.056
2.718IleArg: 2.718 ± 0.052
5.647IleSer: 5.647 ± 0.077
4.488IleThr: 4.488 ± 0.074
4.782IleVal: 4.782 ± 0.068
0.672IleTrp: 0.672 ± 0.027
2.91IleTyr: 2.91 ± 0.065
0.0IleXaa: 0.0 ± 0.0
Lys
4.564LysAla: 4.564 ± 0.077
0.396LysCys: 0.396 ± 0.019
4.522LysAsp: 4.522 ± 0.078
6.394LysGlu: 6.394 ± 0.103
2.69LysPhe: 2.69 ± 0.058
4.428LysGly: 4.428 ± 0.08
1.627LysHis: 1.627 ± 0.046
5.897LysIle: 5.897 ± 0.093
6.854LysLys: 6.854 ± 0.117
6.015LysLeu: 6.015 ± 0.083
2.137LysMet: 2.137 ± 0.049
5.221LysAsn: 5.221 ± 0.099
2.268LysPro: 2.268 ± 0.048
2.747LysGln: 2.747 ± 0.058
3.072LysArg: 3.072 ± 0.061
4.799LysSer: 4.799 ± 0.08
4.483LysThr: 4.483 ± 0.074
4.888LysVal: 4.888 ± 0.074
0.845LysTrp: 0.845 ± 0.032
2.907LysTyr: 2.907 ± 0.057
0.0LysXaa: 0.0 ± 0.0
Leu
5.25LeuAla: 5.25 ± 0.09
0.593LeuCys: 0.593 ± 0.028
4.756LeuAsp: 4.756 ± 0.09
5.663LeuGlu: 5.663 ± 0.091
4.904LeuPhe: 4.904 ± 0.092
5.576LeuGly: 5.576 ± 0.081
1.584LeuHis: 1.584 ± 0.048
7.386LeuIle: 7.386 ± 0.102
7.633LeuLys: 7.633 ± 0.109
8.232LeuLeu: 8.232 ± 0.134
2.184LeuMet: 2.184 ± 0.052
5.877LeuAsn: 5.877 ± 0.088
3.37LeuPro: 3.37 ± 0.057
2.815LeuGln: 2.815 ± 0.06
3.158LeuArg: 3.158 ± 0.058
6.832LeuSer: 6.832 ± 0.078
5.334LeuThr: 5.334 ± 0.074
4.936LeuVal: 4.936 ± 0.081
0.748LeuTrp: 0.748 ± 0.03
3.121LeuTyr: 3.121 ± 0.054
0.0LeuXaa: 0.0 ± 0.0
Met
1.462MetAla: 1.462 ± 0.037
0.156MetCys: 0.156 ± 0.014
1.217MetAsp: 1.217 ± 0.036
1.513MetGlu: 1.513 ± 0.042
0.909MetPhe: 0.909 ± 0.033
1.416MetGly: 1.416 ± 0.047
0.449MetHis: 0.449 ± 0.023
1.642MetIle: 1.642 ± 0.047
2.288MetLys: 2.288 ± 0.056
1.898MetLeu: 1.898 ± 0.047
0.63MetMet: 0.63 ± 0.027
1.433MetAsn: 1.433 ± 0.04
0.736MetPro: 0.736 ± 0.028
0.763MetGln: 0.763 ± 0.029
1.005MetArg: 1.005 ± 0.036
1.519MetSer: 1.519 ± 0.042
1.135MetThr: 1.135 ± 0.04
1.308MetVal: 1.308 ± 0.036
0.167MetTrp: 0.167 ± 0.013
0.715MetTyr: 0.715 ± 0.03
0.0MetXaa: 0.0 ± 0.0
Asn
3.742AsnAla: 3.742 ± 0.071
0.523AsnCys: 0.523 ± 0.025
3.449AsnAsp: 3.449 ± 0.066
4.133AsnGlu: 4.133 ± 0.081
2.911AsnPhe: 2.911 ± 0.061
4.342AsnGly: 4.342 ± 0.096
1.223AsnHis: 1.223 ± 0.035
4.65AsnIle: 4.65 ± 0.069
4.47AsnLys: 4.47 ± 0.08
5.142AsnLeu: 5.142 ± 0.089
1.248AsnMet: 1.248 ± 0.038
4.038AsnAsn: 4.038 ± 0.086
2.802AsnPro: 2.802 ± 0.063
2.537AsnGln: 2.537 ± 0.054
2.24AsnArg: 2.24 ± 0.048
3.812AsnSer: 3.812 ± 0.07
3.72AsnThr: 3.72 ± 0.076
3.538AsnVal: 3.538 ± 0.059
0.752AsnTrp: 0.752 ± 0.029
2.886AsnTyr: 2.886 ± 0.068
0.0AsnXaa: 0.0 ± 0.0
Pro
1.905ProAla: 1.905 ± 0.045
0.254ProCys: 0.254 ± 0.016
1.917ProAsp: 1.917 ± 0.047
2.567ProGlu: 2.567 ± 0.057
1.926ProPhe: 1.926 ± 0.048
2.067ProGly: 2.067 ± 0.053
0.723ProHis: 0.723 ± 0.03
2.827ProIle: 2.827 ± 0.052
2.445ProLys: 2.445 ± 0.056
2.764ProLeu: 2.764 ± 0.048
0.743ProMet: 0.743 ± 0.03
2.485ProAsn: 2.485 ± 0.062
0.892ProPro: 0.892 ± 0.035
1.185ProGln: 1.185 ± 0.039
0.965ProArg: 0.965 ± 0.03
2.416ProSer: 2.416 ± 0.058
2.175ProThr: 2.175 ± 0.059
2.217ProVal: 2.217 ± 0.055
0.318ProTrp: 0.318 ± 0.018
1.445ProTyr: 1.445 ± 0.038
0.0ProXaa: 0.0 ± 0.0
Gln
1.995GlnAla: 1.995 ± 0.047
0.193GlnCys: 0.193 ± 0.016
1.64GlnAsp: 1.64 ± 0.047
2.66GlnGlu: 2.66 ± 0.057
1.833GlnPhe: 1.833 ± 0.038
1.862GlnGly: 1.862 ± 0.045
0.704GlnHis: 0.704 ± 0.029
2.678GlnIle: 2.678 ± 0.048
2.954GlnLys: 2.954 ± 0.07
3.836GlnLeu: 3.836 ± 0.079
0.85GlnMet: 0.85 ± 0.027
2.279GlnAsn: 2.279 ± 0.054
1.136GlnPro: 1.136 ± 0.036
1.502GlnGln: 1.502 ± 0.042
1.386GlnArg: 1.386 ± 0.038
2.185GlnSer: 2.185 ± 0.052
1.951GlnThr: 1.951 ± 0.05
2.054GlnVal: 2.054 ± 0.05
0.371GlnTrp: 0.371 ± 0.02
1.361GlnTyr: 1.361 ± 0.039
0.0GlnXaa: 0.0 ± 0.0
Arg
1.899ArgAla: 1.899 ± 0.048
0.205ArgCys: 0.205 ± 0.016
1.687ArgAsp: 1.687 ± 0.039
2.21ArgGlu: 2.21 ± 0.059
2.013ArgPhe: 2.013 ± 0.047
1.828ArgGly: 1.828 ± 0.048
0.611ArgHis: 0.611 ± 0.025
2.973ArgIle: 2.973 ± 0.057
3.143ArgLys: 3.143 ± 0.07
3.384ArgLeu: 3.384 ± 0.063
0.948ArgMet: 0.948 ± 0.029
2.169ArgAsn: 2.169 ± 0.045
1.17ArgPro: 1.17 ± 0.037
1.157ArgGln: 1.157 ± 0.036
1.379ArgArg: 1.379 ± 0.043
2.131ArgSer: 2.131 ± 0.054
1.852ArgThr: 1.852 ± 0.047
2.139ArgVal: 2.139 ± 0.048
0.409ArgTrp: 0.409 ± 0.02
1.631ArgTyr: 1.631 ± 0.039
0.0ArgXaa: 0.0 ± 0.0
Ser
4.03SerAla: 4.03 ± 0.073
0.65SerCys: 0.65 ± 0.029
3.402SerAsp: 3.402 ± 0.076
3.846SerGlu: 3.846 ± 0.07
4.137SerPhe: 4.137 ± 0.068
4.817SerGly: 4.817 ± 0.1
1.056SerHis: 1.056 ± 0.038
5.603SerIle: 5.603 ± 0.084
4.719SerLys: 4.719 ± 0.087
5.983SerLeu: 5.983 ± 0.084
1.337SerMet: 1.337 ± 0.04
3.996SerAsn: 3.996 ± 0.08
2.352SerPro: 2.352 ± 0.051
2.141SerGln: 2.141 ± 0.044
2.122SerArg: 2.122 ± 0.055
4.787SerSer: 4.787 ± 0.085
3.941SerThr: 3.941 ± 0.07
3.96SerVal: 3.96 ± 0.073
0.673SerTrp: 0.673 ± 0.028
2.715SerTyr: 2.715 ± 0.056
0.0SerXaa: 0.0 ± 0.0
Thr
3.666ThrAla: 3.666 ± 0.078
0.376ThrCys: 0.376 ± 0.025
3.339ThrAsp: 3.339 ± 0.084
3.369ThrGlu: 3.369 ± 0.06
3.099ThrPhe: 3.099 ± 0.069
3.952ThrGly: 3.952 ± 0.079
1.1ThrHis: 1.1 ± 0.036
4.792ThrIle: 4.792 ± 0.09
3.41ThrLys: 3.41 ± 0.064
5.25ThrLeu: 5.25 ± 0.081
0.998ThrMet: 0.998 ± 0.032
3.212ThrAsn: 3.212 ± 0.073
2.687ThrPro: 2.687 ± 0.063
1.93ThrGln: 1.93 ± 0.05
1.669ThrArg: 1.669 ± 0.049
3.973ThrSer: 3.973 ± 0.082
3.622ThrThr: 3.622 ± 0.09
3.849ThrVal: 3.849 ± 0.09
0.574ThrTrp: 0.574 ± 0.029
2.502ThrTyr: 2.502 ± 0.065
0.0ThrXaa: 0.0 ± 0.0
Val
3.784ValAla: 3.784 ± 0.066
0.546ValCys: 0.546 ± 0.029
3.728ValAsp: 3.728 ± 0.069
4.32ValGlu: 4.32 ± 0.074
3.493ValPhe: 3.493 ± 0.06
3.85ValGly: 3.85 ± 0.072
1.1ValHis: 1.1 ± 0.03
4.726ValIle: 4.726 ± 0.075
4.489ValLys: 4.489 ± 0.074
5.612ValLeu: 5.612 ± 0.095
1.369ValMet: 1.369 ± 0.043
3.914ValAsn: 3.914 ± 0.075
2.13ValPro: 2.13 ± 0.048
1.94ValGln: 1.94 ± 0.043
2.077ValArg: 2.077 ± 0.05
4.279ValSer: 4.279 ± 0.074
3.339ValThr: 3.339 ± 0.091
4.13ValVal: 4.13 ± 0.081
0.605ValTrp: 0.605 ± 0.024
2.433ValTyr: 2.433 ± 0.047
0.0ValXaa: 0.0 ± 0.0
Trp
0.517TrpAla: 0.517 ± 0.029
0.108TrpCys: 0.108 ± 0.01
0.677TrpAsp: 0.677 ± 0.03
0.705TrpGlu: 0.705 ± 0.03
0.507TrpPhe: 0.507 ± 0.025
0.636TrpGly: 0.636 ± 0.025
0.182TrpHis: 0.182 ± 0.014
0.768TrpIle: 0.768 ± 0.032
0.896TrpLys: 0.896 ± 0.029
0.873TrpLeu: 0.873 ± 0.033
0.323TrpMet: 0.323 ± 0.019
0.707TrpAsn: 0.707 ± 0.028
0.223TrpPro: 0.223 ± 0.016
0.33TrpGln: 0.33 ± 0.016
0.384TrpArg: 0.384 ± 0.019
0.737TrpSer: 0.737 ± 0.031
0.607TrpThr: 0.607 ± 0.028
0.585TrpVal: 0.585 ± 0.025
0.121TrpTrp: 0.121 ± 0.011
0.393TrpTyr: 0.393 ± 0.021
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.435TyrAla: 2.435 ± 0.046
0.319TyrCys: 0.319 ± 0.017
2.57TyrAsp: 2.57 ± 0.061
2.507TyrGlu: 2.507 ± 0.061
2.562TyrPhe: 2.562 ± 0.06
2.666TyrGly: 2.666 ± 0.051
0.883TyrHis: 0.883 ± 0.03
2.696TyrIle: 2.696 ± 0.062
2.687TyrLys: 2.687 ± 0.063
3.723TyrLeu: 3.723 ± 0.064
0.786TyrMet: 0.786 ± 0.032
2.468TyrAsn: 2.468 ± 0.06
1.514TyrPro: 1.514 ± 0.042
1.557TyrGln: 1.557 ± 0.047
1.637TyrArg: 1.637 ± 0.042
2.641TyrSer: 2.641 ± 0.06
2.472TyrThr: 2.472 ± 0.062
2.124TyrVal: 2.124 ± 0.045
0.45TyrTrp: 0.45 ± 0.022
1.845TyrTyr: 1.845 ± 0.049
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 2930 proteins (972125 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