Amino acid dipepetide frequency for Streptomyces sp. Ru71

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
21.735AlaAla: 21.735 ± 0.153
1.119AlaCys: 1.119 ± 0.022
8.316AlaAsp: 8.316 ± 0.061
8.763AlaGlu: 8.763 ± 0.087
3.526AlaPhe: 3.526 ± 0.041
13.386AlaGly: 13.386 ± 0.088
3.097AlaHis: 3.097 ± 0.037
3.283AlaIle: 3.283 ± 0.041
2.909AlaLys: 2.909 ± 0.043
15.117AlaLeu: 15.117 ± 0.106
2.403AlaMet: 2.403 ± 0.03
1.881AlaAsn: 1.881 ± 0.031
7.158AlaPro: 7.158 ± 0.072
4.013AlaGln: 4.013 ± 0.05
10.632AlaArg: 10.632 ± 0.089
5.831AlaSer: 5.831 ± 0.059
7.072AlaThr: 7.072 ± 0.062
12.466AlaVal: 12.466 ± 0.086
1.945AlaTrp: 1.945 ± 0.028
2.909AlaTyr: 2.909 ± 0.038
0.0AlaXaa: 0.0 ± 0.0
Cys
1.148CysAla: 1.148 ± 0.023
0.099CysCys: 0.099 ± 0.007
0.464CysAsp: 0.464 ± 0.015
0.393CysGlu: 0.393 ± 0.014
0.236CysPhe: 0.236 ± 0.01
1.032CysGly: 1.032 ± 0.022
0.201CysHis: 0.201 ± 0.009
0.162CysIle: 0.162 ± 0.008
0.111CysLys: 0.111 ± 0.006
0.783CysLeu: 0.783 ± 0.018
0.129CysMet: 0.129 ± 0.007
0.132CysAsn: 0.132 ± 0.007
0.505CysPro: 0.505 ± 0.015
0.167CysGln: 0.167 ± 0.009
0.606CysArg: 0.606 ± 0.016
0.426CysSer: 0.426 ± 0.014
0.559CysThr: 0.559 ± 0.017
0.704CysVal: 0.704 ± 0.018
0.135CysTrp: 0.135 ± 0.007
0.156CysTyr: 0.156 ± 0.007
0.0CysXaa: 0.0 ± 0.0
Asp
7.859AspAla: 7.859 ± 0.064
0.428AspCys: 0.428 ± 0.015
3.612AspAsp: 3.612 ± 0.045
3.665AspGlu: 3.665 ± 0.045
1.662AspPhe: 1.662 ± 0.029
6.467AspGly: 6.467 ± 0.064
1.405AspHis: 1.405 ± 0.028
1.837AspIle: 1.837 ± 0.033
1.289AspLys: 1.289 ± 0.027
6.116AspLeu: 6.116 ± 0.051
0.815AspMet: 0.815 ± 0.023
0.965AspAsn: 0.965 ± 0.026
4.462AspPro: 4.462 ± 0.045
1.513AspGln: 1.513 ± 0.029
4.688AspArg: 4.688 ± 0.055
2.393AspSer: 2.393 ± 0.035
3.323AspThr: 3.323 ± 0.043
4.83AspVal: 4.83 ± 0.045
1.069AspTrp: 1.069 ± 0.023
1.123AspTyr: 1.123 ± 0.022
0.0AspXaa: 0.0 ± 0.0
Glu
7.325GluAla: 7.325 ± 0.071
0.361GluCys: 0.361 ± 0.013
2.8GluAsp: 2.8 ± 0.039
3.607GluGlu: 3.607 ± 0.051
1.364GluPhe: 1.364 ± 0.026
4.223GluGly: 4.223 ± 0.043
1.534GluHis: 1.534 ± 0.025
2.192GluIle: 2.192 ± 0.034
1.371GluLys: 1.371 ± 0.027
6.615GluLeu: 6.615 ± 0.063
0.836GluMet: 0.836 ± 0.018
0.949GluAsn: 0.949 ± 0.02
3.364GluPro: 3.364 ± 0.045
2.276GluGln: 2.276 ± 0.035
5.62GluArg: 5.62 ± 0.054
2.273GluSer: 2.273 ± 0.032
2.738GluThr: 2.738 ± 0.036
4.345GluVal: 4.345 ± 0.048
0.743GluTrp: 0.743 ± 0.017
1.113GluTyr: 1.113 ± 0.024
0.0GluXaa: 0.0 ± 0.0
Phe
3.723PheAla: 3.723 ± 0.044
0.269PheCys: 0.269 ± 0.01
1.894PheAsp: 1.894 ± 0.03
1.387PheGlu: 1.387 ± 0.024
0.896PhePhe: 0.896 ± 0.021
2.978PheGly: 2.978 ± 0.042
0.629PheHis: 0.629 ± 0.016
0.671PheIle: 0.671 ± 0.018
0.535PheLys: 0.535 ± 0.014
2.64PheLeu: 2.64 ± 0.036
0.388PheMet: 0.388 ± 0.013
0.559PheAsn: 0.559 ± 0.016
1.411PhePro: 1.411 ± 0.024
0.701PheGln: 0.701 ± 0.018
1.807PheArg: 1.807 ± 0.029
1.438PheSer: 1.438 ± 0.026
2.118PheThr: 2.118 ± 0.032
2.23PheVal: 2.23 ± 0.03
0.44PheTrp: 0.44 ± 0.014
0.601PheTyr: 0.601 ± 0.017
0.0PheXaa: 0.0 ± 0.0
Gly
11.151GlyAla: 11.151 ± 0.09
0.884GlyCys: 0.884 ± 0.019
5.204GlyAsp: 5.204 ± 0.048
5.095GlyGlu: 5.095 ± 0.053
2.907GlyPhe: 2.907 ± 0.039
8.947GlyGly: 8.947 ± 0.101
2.418GlyHis: 2.418 ± 0.035
3.353GlyIle: 3.353 ± 0.035
2.431GlyLys: 2.431 ± 0.042
9.329GlyLeu: 9.329 ± 0.073
1.97GlyMet: 1.97 ± 0.031
1.762GlyAsn: 1.762 ± 0.034
5.143GlyPro: 5.143 ± 0.053
2.703GlyGln: 2.703 ± 0.034
7.952GlyArg: 7.952 ± 0.07
5.193GlySer: 5.193 ± 0.049
6.472GlyThr: 6.472 ± 0.06
7.685GlyVal: 7.685 ± 0.071
1.766GlyTrp: 1.766 ± 0.029
2.344GlyTyr: 2.344 ± 0.032
0.0GlyXaa: 0.0 ± 0.0
His
2.807HisAla: 2.807 ± 0.039
0.221HisCys: 0.221 ± 0.011
1.367HisAsp: 1.367 ± 0.025
1.229HisGlu: 1.229 ± 0.021
0.668HisPhe: 0.668 ± 0.017
2.56HisGly: 2.56 ± 0.034
0.687HisHis: 0.687 ± 0.016
0.683HisIle: 0.683 ± 0.016
0.377HisLys: 0.377 ± 0.013
2.426HisLeu: 2.426 ± 0.036
0.324HisMet: 0.324 ± 0.013
0.372HisAsn: 0.372 ± 0.013
1.908HisPro: 1.908 ± 0.035
0.629HisGln: 0.629 ± 0.016
2.16HisArg: 2.16 ± 0.034
1.01HisSer: 1.01 ± 0.023
1.398HisThr: 1.398 ± 0.028
1.749HisVal: 1.749 ± 0.029
0.387HisTrp: 0.387 ± 0.014
0.498HisTyr: 0.498 ± 0.015
0.0HisXaa: 0.0 ± 0.0
Ile
4.729IleAla: 4.729 ± 0.046
0.279IleCys: 0.279 ± 0.011
2.188IleAsp: 2.188 ± 0.032
1.879IleGlu: 1.879 ± 0.028
0.677IlePhe: 0.677 ± 0.018
3.452IleGly: 3.452 ± 0.044
0.586IleHis: 0.586 ± 0.015
0.786IleIle: 0.786 ± 0.02
0.716IleLys: 0.716 ± 0.018
2.294IleLeu: 2.294 ± 0.039
0.426IleMet: 0.426 ± 0.014
0.665IleAsn: 0.665 ± 0.017
1.717IlePro: 1.717 ± 0.026
0.724IleGln: 0.724 ± 0.021
2.134IleArg: 2.134 ± 0.031
1.579IleSer: 1.579 ± 0.028
2.206IleThr: 2.206 ± 0.033
2.706IleVal: 2.706 ± 0.035
0.369IleTrp: 0.369 ± 0.012
0.524IleTyr: 0.524 ± 0.017
0.0IleXaa: 0.0 ± 0.0
Lys
3.047LysAla: 3.047 ± 0.043
0.119LysCys: 0.119 ± 0.007
1.43LysAsp: 1.43 ± 0.033
1.199LysGlu: 1.199 ± 0.027
0.469LysPhe: 0.469 ± 0.014
1.843LysGly: 1.843 ± 0.038
0.418LysHis: 0.418 ± 0.013
0.883LysIle: 0.883 ± 0.021
0.865LysLys: 0.865 ± 0.028
2.027LysLeu: 2.027 ± 0.037
0.379LysMet: 0.379 ± 0.014
0.523LysAsn: 0.523 ± 0.017
1.35LysPro: 1.35 ± 0.028
0.73LysGln: 0.73 ± 0.022
1.419LysArg: 1.419 ± 0.028
1.085LysSer: 1.085 ± 0.025
1.301LysThr: 1.301 ± 0.033
1.968LysVal: 1.968 ± 0.037
0.255LysTrp: 0.255 ± 0.011
0.482LysTyr: 0.482 ± 0.016
0.0LysXaa: 0.0 ± 0.0
Leu
15.405LeuAla: 15.405 ± 0.116
0.891LeuCys: 0.891 ± 0.019
6.64LeuAsp: 6.64 ± 0.053
4.452LeuGlu: 4.452 ± 0.046
2.632LeuPhe: 2.632 ± 0.04
9.294LeuGly: 9.294 ± 0.083
2.305LeuHis: 2.305 ± 0.029
3.246LeuIle: 3.246 ± 0.043
2.177LeuLys: 2.177 ± 0.038
11.586LeuLeu: 11.586 ± 0.12
1.615LeuMet: 1.615 ± 0.03
1.689LeuAsn: 1.689 ± 0.029
6.568LeuPro: 6.568 ± 0.051
2.345LeuGln: 2.345 ± 0.035
8.676LeuArg: 8.676 ± 0.076
5.063LeuSer: 5.063 ± 0.053
7.125LeuThr: 7.125 ± 0.064
8.818LeuVal: 8.818 ± 0.067
1.323LeuTrp: 1.323 ± 0.03
1.958LeuTyr: 1.958 ± 0.026
0.0LeuXaa: 0.0 ± 0.0
Met
2.247MetAla: 2.247 ± 0.032
0.142MetCys: 0.142 ± 0.008
0.865MetAsp: 0.865 ± 0.023
0.711MetGlu: 0.711 ± 0.02
0.436MetPhe: 0.436 ± 0.016
1.299MetGly: 1.299 ± 0.023
0.346MetHis: 0.346 ± 0.012
0.638MetIle: 0.638 ± 0.018
0.404MetLys: 0.404 ± 0.013
1.608MetLeu: 1.608 ± 0.029
0.284MetMet: 0.284 ± 0.013
0.431MetAsn: 0.431 ± 0.013
1.104MetPro: 1.104 ± 0.023
0.443MetGln: 0.443 ± 0.015
1.396MetArg: 1.396 ± 0.024
1.277MetSer: 1.277 ± 0.02
1.55MetThr: 1.55 ± 0.027
1.207MetVal: 1.207 ± 0.024
0.21MetTrp: 0.21 ± 0.01
0.322MetTyr: 0.322 ± 0.012
0.0MetXaa: 0.0 ± 0.0
Asn
2.186AsnAla: 2.186 ± 0.034
0.171AsnCys: 0.171 ± 0.008
0.954AsnAsp: 0.954 ± 0.023
0.78AsnGlu: 0.78 ± 0.019
0.471AsnPhe: 0.471 ± 0.013
1.829AsnGly: 1.829 ± 0.039
0.408AsnHis: 0.408 ± 0.014
0.629AsnIle: 0.629 ± 0.019
0.422AsnLys: 0.422 ± 0.014
1.622AsnLeu: 1.622 ± 0.027
0.299AsnMet: 0.299 ± 0.011
0.437AsnAsn: 0.437 ± 0.015
1.338AsnPro: 1.338 ± 0.022
0.51AsnGln: 0.51 ± 0.016
1.208AsnArg: 1.208 ± 0.021
0.893AsnSer: 0.893 ± 0.021
1.121AsnThr: 1.121 ± 0.028
1.395AsnVal: 1.395 ± 0.026
0.282AsnTrp: 0.282 ± 0.011
0.413AsnTyr: 0.413 ± 0.012
0.0AsnXaa: 0.0 ± 0.0
Pro
8.916ProAla: 8.916 ± 0.079
0.361ProCys: 0.361 ± 0.014
4.363ProAsp: 4.363 ± 0.046
4.171ProGlu: 4.171 ± 0.049
1.5ProPhe: 1.5 ± 0.027
6.702ProGly: 6.702 ± 0.068
1.503ProHis: 1.503 ± 0.025
1.233ProIle: 1.233 ± 0.022
1.197ProLys: 1.197 ± 0.029
5.534ProLeu: 5.534 ± 0.052
0.984ProMet: 0.984 ± 0.02
0.885ProAsn: 0.885 ± 0.021
3.581ProPro: 3.581 ± 0.054
1.874ProGln: 1.874 ± 0.036
4.099ProArg: 4.099 ± 0.051
3.082ProSer: 3.082 ± 0.043
3.172ProThr: 3.172 ± 0.042
5.562ProVal: 5.562 ± 0.055
0.929ProTrp: 0.929 ± 0.024
1.479ProTyr: 1.479 ± 0.025
0.0ProXaa: 0.0 ± 0.0
Gln
3.968GlnAla: 3.968 ± 0.047
0.187GlnCys: 0.187 ± 0.01
1.437GlnAsp: 1.437 ± 0.025
1.482GlnGlu: 1.482 ± 0.023
0.671GlnPhe: 0.671 ± 0.017
2.435GlnGly: 2.435 ± 0.038
0.644GlnHis: 0.644 ± 0.018
1.06GlnIle: 1.06 ± 0.023
0.642GlnLys: 0.642 ± 0.019
3.04GlnLeu: 3.04 ± 0.038
0.492GlnMet: 0.492 ± 0.015
0.517GlnAsn: 0.517 ± 0.018
1.78GlnPro: 1.78 ± 0.034
1.279GlnGln: 1.279 ± 0.035
2.403GlnArg: 2.403 ± 0.038
1.246GlnSer: 1.246 ± 0.023
1.413GlnThr: 1.413 ± 0.03
2.43GlnVal: 2.43 ± 0.03
0.5GlnTrp: 0.5 ± 0.015
0.629GlnTyr: 0.629 ± 0.018
0.0GlnXaa: 0.0 ± 0.0
Arg
10.144ArgAla: 10.144 ± 0.086
0.591ArgCys: 0.591 ± 0.017
4.27ArgAsp: 4.27 ± 0.048
4.82ArgGlu: 4.82 ± 0.057
2.334ArgPhe: 2.334 ± 0.031
5.891ArgGly: 5.891 ± 0.058
2.184ArgHis: 2.184 ± 0.035
3.141ArgIle: 3.141 ± 0.038
1.569ArgLys: 1.569 ± 0.027
9.108ArgLeu: 9.108 ± 0.084
1.73ArgMet: 1.73 ± 0.026
1.27ArgAsn: 1.27 ± 0.025
5.116ArgPro: 5.116 ± 0.062
2.323ArgGln: 2.323 ± 0.033
7.985ArgArg: 7.985 ± 0.08
3.814ArgSer: 3.814 ± 0.044
5.368ArgThr: 5.368 ± 0.044
5.963ArgVal: 5.963 ± 0.057
1.36ArgTrp: 1.36 ± 0.024
1.834ArgTyr: 1.834 ± 0.025
0.0ArgXaa: 0.0 ± 0.0
Ser
6.547SerAla: 6.547 ± 0.058
0.417SerCys: 0.417 ± 0.012
2.576SerAsp: 2.576 ± 0.034
2.207SerGlu: 2.207 ± 0.035
1.495SerPhe: 1.495 ± 0.027
5.691SerGly: 5.691 ± 0.057
0.988SerHis: 0.988 ± 0.019
1.331SerIle: 1.331 ± 0.028
0.994SerLys: 0.994 ± 0.026
4.659SerLeu: 4.659 ± 0.045
1.002SerMet: 1.002 ± 0.023
0.837SerAsn: 0.837 ± 0.021
3.101SerPro: 3.101 ± 0.045
1.189SerGln: 1.189 ± 0.027
3.556SerArg: 3.556 ± 0.04
2.651SerSer: 2.651 ± 0.045
2.985SerThr: 2.985 ± 0.042
4.179SerVal: 4.179 ± 0.044
0.867SerTrp: 0.867 ± 0.021
1.225SerTyr: 1.225 ± 0.026
0.0SerXaa: 0.0 ± 0.0
Thr
9.155ThrAla: 9.155 ± 0.079
0.454ThrCys: 0.454 ± 0.013
3.656ThrAsp: 3.656 ± 0.044
3.157ThrGlu: 3.157 ± 0.035
1.651ThrPhe: 1.651 ± 0.024
6.805ThrGly: 6.805 ± 0.063
1.241ThrHis: 1.241 ± 0.025
1.628ThrIle: 1.628 ± 0.031
1.192ThrLys: 1.192 ± 0.027
5.861ThrLeu: 5.861 ± 0.054
0.9ThrMet: 0.9 ± 0.023
0.981ThrAsn: 0.981 ± 0.024
4.294ThrPro: 4.294 ± 0.042
1.395ThrGln: 1.395 ± 0.026
4.02ThrArg: 4.02 ± 0.04
3.138ThrSer: 3.138 ± 0.043
3.918ThrThr: 3.918 ± 0.059
6.187ThrVal: 6.187 ± 0.055
0.982ThrTrp: 0.982 ± 0.022
1.429ThrTyr: 1.429 ± 0.033
0.0ThrXaa: 0.0 ± 0.0
Val
10.818ValAla: 10.818 ± 0.089
0.816ValCys: 0.816 ± 0.02
4.924ValAsp: 4.924 ± 0.051
4.684ValGlu: 4.684 ± 0.053
2.545ValPhe: 2.545 ± 0.036
6.36ValGly: 6.36 ± 0.061
2.061ValHis: 2.061 ± 0.031
2.817ValIle: 2.817 ± 0.037
1.785ValLys: 1.785 ± 0.034
9.516ValLeu: 9.516 ± 0.088
1.4ValMet: 1.4 ± 0.024
1.679ValAsn: 1.679 ± 0.03
5.366ValPro: 5.366 ± 0.048
2.15ValGln: 2.15 ± 0.031
7.286ValArg: 7.286 ± 0.06
4.216ValSer: 4.216 ± 0.047
5.872ValThr: 5.872 ± 0.054
8.167ValVal: 8.167 ± 0.087
1.16ValTrp: 1.16 ± 0.023
1.688ValTyr: 1.688 ± 0.029
0.0ValXaa: 0.0 ± 0.0
Trp
1.737TrpAla: 1.737 ± 0.028
0.15TrpCys: 0.15 ± 0.009
0.86TrpAsp: 0.86 ± 0.022
0.73TrpGlu: 0.73 ± 0.019
0.513TrpPhe: 0.513 ± 0.016
1.105TrpGly: 1.105 ± 0.023
0.389TrpHis: 0.389 ± 0.013
0.574TrpIle: 0.574 ± 0.015
0.363TrpLys: 0.363 ± 0.013
1.821TrpLeu: 1.821 ± 0.032
0.294TrpMet: 0.294 ± 0.011
0.412TrpAsn: 0.412 ± 0.012
0.79TrpPro: 0.79 ± 0.02
0.659TrpGln: 0.659 ± 0.016
1.344TrpArg: 1.344 ± 0.024
0.91TrpSer: 0.91 ± 0.02
1.061TrpThr: 1.061 ± 0.023
0.993TrpVal: 0.993 ± 0.022
0.351TrpTrp: 0.351 ± 0.012
0.378TrpTyr: 0.378 ± 0.015
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.914TyrAla: 2.914 ± 0.035
0.192TyrCys: 0.192 ± 0.01
1.702TyrAsp: 1.702 ± 0.035
1.235TyrGlu: 1.235 ± 0.024
0.662TyrPhe: 0.662 ± 0.017
2.41TyrGly: 2.41 ± 0.036
0.418TyrHis: 0.418 ± 0.014
0.487TyrIle: 0.487 ± 0.015
0.443TyrLys: 0.443 ± 0.016
2.11TyrLeu: 2.11 ± 0.031
0.253TyrMet: 0.253 ± 0.011
0.422TyrAsn: 0.422 ± 0.015
1.068TyrPro: 1.068 ± 0.023
0.631TyrGln: 0.631 ± 0.018
1.825TyrArg: 1.825 ± 0.03
0.976TyrSer: 0.976 ± 0.023
1.272TyrThr: 1.272 ± 0.029
1.727TyrVal: 1.727 ± 0.029
0.36TyrTrp: 0.36 ± 0.014
0.515TyrTyr: 0.515 ± 0.016
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 7228 proteins (2333772 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