Amino acid dipepetide frequency for Sphingomonas sp. Leaf357

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
20.216AlaAla: 20.216 ± 0.22
1.102AlaCys: 1.102 ± 0.033
7.92AlaAsp: 7.92 ± 0.101
7.285AlaGlu: 7.285 ± 0.104
4.515AlaPhe: 4.515 ± 0.068
11.803AlaGly: 11.803 ± 0.115
2.394AlaHis: 2.394 ± 0.052
7.468AlaIle: 7.468 ± 0.086
4.589AlaLys: 4.589 ± 0.085
14.008AlaLeu: 14.008 ± 0.146
3.969AlaMet: 3.969 ± 0.062
3.221AlaAsn: 3.221 ± 0.054
6.544AlaPro: 6.544 ± 0.093
4.371AlaGln: 4.371 ± 0.07
9.995AlaArg: 9.995 ± 0.126
6.515AlaSer: 6.515 ± 0.076
7.647AlaThr: 7.647 ± 0.087
9.082AlaVal: 9.082 ± 0.092
1.73AlaTrp: 1.73 ± 0.043
2.626AlaTyr: 2.626 ± 0.051
0.0AlaXaa: 0.0 ± 0.0
Cys
0.939CysAla: 0.939 ± 0.03
0.077CysCys: 0.077 ± 0.008
0.507CysAsp: 0.507 ± 0.022
0.345CysGlu: 0.345 ± 0.019
0.269CysPhe: 0.269 ± 0.016
0.861CysGly: 0.861 ± 0.03
0.188CysHis: 0.188 ± 0.014
0.329CysIle: 0.329 ± 0.018
0.15CysLys: 0.15 ± 0.012
0.633CysLeu: 0.633 ± 0.026
0.159CysMet: 0.159 ± 0.011
0.194CysAsn: 0.194 ± 0.014
0.401CysPro: 0.401 ± 0.019
0.163CysGln: 0.163 ± 0.012
0.495CysArg: 0.495 ± 0.02
0.382CysSer: 0.382 ± 0.018
0.386CysThr: 0.386 ± 0.02
0.542CysVal: 0.542 ± 0.022
0.096CysTrp: 0.096 ± 0.009
0.161CysTyr: 0.161 ± 0.012
0.0CysXaa: 0.0 ± 0.0
Asp
8.28AspAla: 8.28 ± 0.098
0.431AspCys: 0.431 ± 0.021
3.424AspAsp: 3.424 ± 0.064
3.124AspGlu: 3.124 ± 0.054
2.209AspPhe: 2.209 ± 0.049
5.784AspGly: 5.784 ± 0.087
1.333AspHis: 1.333 ± 0.037
2.825AspIle: 2.825 ± 0.051
1.727AspLys: 1.727 ± 0.048
6.031AspLeu: 6.031 ± 0.076
1.378AspMet: 1.378 ± 0.035
1.285AspAsn: 1.285 ± 0.037
3.824AspPro: 3.824 ± 0.058
1.801AspGln: 1.801 ± 0.04
5.123AspArg: 5.123 ± 0.081
2.247AspSer: 2.247 ± 0.053
3.067AspThr: 3.067 ± 0.051
4.331AspVal: 4.331 ± 0.063
1.121AspTrp: 1.121 ± 0.034
1.591AspTyr: 1.591 ± 0.041
0.0AspXaa: 0.0 ± 0.0
Glu
7.006GluAla: 7.006 ± 0.105
0.271GluCys: 0.271 ± 0.016
2.684GluAsp: 2.684 ± 0.052
2.259GluGlu: 2.259 ± 0.055
1.4GluPhe: 1.4 ± 0.038
3.969GluGly: 3.969 ± 0.063
1.039GluHis: 1.039 ± 0.03
2.9GluIle: 2.9 ± 0.05
1.655GluLys: 1.655 ± 0.041
4.362GluLeu: 4.362 ± 0.067
1.352GluMet: 1.352 ± 0.038
1.206GluAsn: 1.206 ± 0.034
2.24GluPro: 2.24 ± 0.049
1.772GluGln: 1.772 ± 0.042
4.504GluArg: 4.504 ± 0.066
2.034GluSer: 2.034 ± 0.041
3.264GluThr: 3.264 ± 0.058
3.266GluVal: 3.266 ± 0.054
0.704GluTrp: 0.704 ± 0.026
0.941GluTyr: 0.941 ± 0.031
0.0GluXaa: 0.0 ± 0.0
Phe
5.072PheAla: 5.072 ± 0.075
0.293PheCys: 0.293 ± 0.018
2.732PheAsp: 2.732 ± 0.051
1.913PheGlu: 1.913 ± 0.045
1.233PhePhe: 1.233 ± 0.042
3.863PheGly: 3.863 ± 0.077
0.67PheHis: 0.67 ± 0.024
1.345PheIle: 1.345 ± 0.036
0.903PheLys: 0.903 ± 0.028
2.967PheLeu: 2.967 ± 0.057
0.709PheMet: 0.709 ± 0.025
0.983PheAsn: 0.983 ± 0.037
1.543PhePro: 1.543 ± 0.037
0.888PheGln: 0.888 ± 0.029
2.133PheArg: 2.133 ± 0.046
2.016PheSer: 2.016 ± 0.048
2.012PheThr: 2.012 ± 0.05
2.805PheVal: 2.805 ± 0.049
0.47PheTrp: 0.47 ± 0.021
0.896PheTyr: 0.896 ± 0.029
0.0PheXaa: 0.0 ± 0.0
Gly
10.405GlyAla: 10.405 ± 0.099
0.798GlyCys: 0.798 ± 0.028
5.169GlyAsp: 5.169 ± 0.073
4.428GlyGlu: 4.428 ± 0.071
3.741GlyPhe: 3.741 ± 0.076
8.71GlyGly: 8.71 ± 0.121
1.839GlyHis: 1.839 ± 0.048
4.614GlyIle: 4.614 ± 0.066
3.33GlyLys: 3.33 ± 0.063
8.69GlyLeu: 8.69 ± 0.101
2.429GlyMet: 2.429 ± 0.046
2.403GlyAsn: 2.403 ± 0.052
3.669GlyPro: 3.669 ± 0.057
3.035GlyGln: 3.035 ± 0.055
6.39GlyArg: 6.39 ± 0.077
4.847GlySer: 4.847 ± 0.079
5.307GlyThr: 5.307 ± 0.066
6.769GlyVal: 6.769 ± 0.072
1.641GlyTrp: 1.641 ± 0.039
2.506GlyTyr: 2.506 ± 0.05
0.0GlyXaa: 0.0 ± 0.0
His
2.427HisAla: 2.427 ± 0.055
0.184HisCys: 0.184 ± 0.011
1.271HisAsp: 1.271 ± 0.038
0.919HisGlu: 0.919 ± 0.029
0.747HisPhe: 0.747 ± 0.028
1.906HisGly: 1.906 ± 0.042
0.544HisHis: 0.544 ± 0.022
0.846HisIle: 0.846 ± 0.031
0.461HisLys: 0.461 ± 0.022
1.798HisLeu: 1.798 ± 0.047
0.381HisMet: 0.381 ± 0.02
0.412HisAsn: 0.412 ± 0.019
1.277HisPro: 1.277 ± 0.036
0.517HisGln: 0.517 ± 0.025
1.426HisArg: 1.426 ± 0.036
0.802HisSer: 0.802 ± 0.026
0.766HisThr: 0.766 ± 0.025
1.43HisVal: 1.43 ± 0.038
0.357HisTrp: 0.357 ± 0.02
0.52HisTyr: 0.52 ± 0.023
0.0HisXaa: 0.0 ± 0.0
Ile
8.732IleAla: 8.732 ± 0.089
0.399IleCys: 0.399 ± 0.019
4.248IleAsp: 4.248 ± 0.068
3.261IleGlu: 3.261 ± 0.061
1.467IlePhe: 1.467 ± 0.036
5.598IleGly: 5.598 ± 0.074
0.813IleHis: 0.813 ± 0.026
1.876IleIle: 1.876 ± 0.05
1.244IleLys: 1.244 ± 0.033
4.111IleLeu: 4.111 ± 0.059
0.835IleMet: 0.835 ± 0.03
1.265IleAsn: 1.265 ± 0.037
2.225IlePro: 2.225 ± 0.045
1.095IleGln: 1.095 ± 0.031
3.051IleArg: 3.051 ± 0.053
2.442IleSer: 2.442 ± 0.049
2.677IleThr: 2.677 ± 0.046
4.741IleVal: 4.741 ± 0.068
0.544IleTrp: 0.544 ± 0.026
0.994IleTyr: 0.994 ± 0.031
0.0IleXaa: 0.0 ± 0.0
Lys
4.21LysAla: 4.21 ± 0.081
0.149LysCys: 0.149 ± 0.013
1.583LysAsp: 1.583 ± 0.044
1.047LysGlu: 1.047 ± 0.032
0.886LysPhe: 0.886 ± 0.031
2.593LysGly: 2.593 ± 0.054
0.54LysHis: 0.54 ± 0.022
1.493LysIle: 1.493 ± 0.039
1.018LysLys: 1.018 ± 0.033
3.288LysLeu: 3.288 ± 0.064
0.831LysMet: 0.831 ± 0.026
0.703LysAsn: 0.703 ± 0.029
2.092LysPro: 2.092 ± 0.049
0.885LysGln: 0.885 ± 0.032
2.264LysArg: 2.264 ± 0.05
1.583LysSer: 1.583 ± 0.041
1.978LysThr: 1.978 ± 0.05
2.274LysVal: 2.274 ± 0.048
0.359LysTrp: 0.359 ± 0.02
0.64LysTyr: 0.64 ± 0.025
0.0LysXaa: 0.0 ± 0.0
Leu
14.091LeuAla: 14.091 ± 0.156
0.75LeuCys: 0.75 ± 0.025
6.248LeuAsp: 6.248 ± 0.078
4.186LeuGlu: 4.186 ± 0.073
3.542LeuPhe: 3.542 ± 0.059
8.427LeuGly: 8.427 ± 0.091
1.677LeuHis: 1.677 ± 0.035
5.081LeuIle: 5.081 ± 0.077
3.164LeuLys: 3.164 ± 0.057
8.982LeuLeu: 8.982 ± 0.093
2.051LeuMet: 2.051 ± 0.045
2.415LeuAsn: 2.415 ± 0.045
5.548LeuPro: 5.548 ± 0.073
2.365LeuGln: 2.365 ± 0.046
6.526LeuArg: 6.526 ± 0.082
5.741LeuSer: 5.741 ± 0.07
5.803LeuThr: 5.803 ± 0.073
7.055LeuVal: 7.055 ± 0.084
1.248LeuTrp: 1.248 ± 0.034
1.987LeuTyr: 1.987 ± 0.05
0.0LeuXaa: 0.0 ± 0.0
Met
3.252MetAla: 3.252 ± 0.059
0.152MetCys: 0.152 ± 0.012
1.033MetAsp: 1.033 ± 0.039
0.893MetGlu: 0.893 ± 0.029
0.705MetPhe: 0.705 ± 0.026
1.829MetGly: 1.829 ± 0.044
0.421MetHis: 0.421 ± 0.019
1.488MetIle: 1.488 ± 0.039
0.919MetLys: 0.919 ± 0.03
2.702MetLeu: 2.702 ± 0.05
0.661MetMet: 0.661 ± 0.023
0.673MetAsn: 0.673 ± 0.024
1.427MetPro: 1.427 ± 0.037
0.678MetGln: 0.678 ± 0.025
1.822MetArg: 1.822 ± 0.039
1.386MetSer: 1.386 ± 0.034
1.829MetThr: 1.829 ± 0.041
1.594MetVal: 1.594 ± 0.041
0.229MetTrp: 0.229 ± 0.013
0.316MetTyr: 0.316 ± 0.017
0.0MetXaa: 0.0 ± 0.0
Asn
3.382AsnAla: 3.382 ± 0.056
0.221AsnCys: 0.221 ± 0.014
1.431AsnAsp: 1.431 ± 0.042
0.935AsnGlu: 0.935 ± 0.029
0.943AsnPhe: 0.943 ± 0.035
2.507AsnGly: 2.507 ± 0.052
0.428AsnHis: 0.428 ± 0.019
1.294AsnIle: 1.294 ± 0.036
0.615AsnLys: 0.615 ± 0.027
2.442AsnLeu: 2.442 ± 0.052
0.531AsnMet: 0.531 ± 0.023
0.706AsnAsn: 0.706 ± 0.029
1.65AsnPro: 1.65 ± 0.047
0.722AsnGln: 0.722 ± 0.028
1.78AsnArg: 1.78 ± 0.042
1.254AsnSer: 1.254 ± 0.039
1.326AsnThr: 1.326 ± 0.045
1.975AsnVal: 1.975 ± 0.054
0.392AsnTrp: 0.392 ± 0.02
0.779AsnTyr: 0.779 ± 0.031
0.0AsnXaa: 0.0 ± 0.0
Pro
7.191ProAla: 7.191 ± 0.092
0.268ProCys: 0.268 ± 0.017
3.775ProAsp: 3.775 ± 0.059
3.243ProGlu: 3.243 ± 0.063
1.92ProPhe: 1.92 ± 0.044
4.953ProGly: 4.953 ± 0.062
1.025ProHis: 1.025 ± 0.031
2.673ProIle: 2.673 ± 0.049
1.719ProLys: 1.719 ± 0.04
4.838ProLeu: 4.838 ± 0.067
1.213ProMet: 1.213 ± 0.037
1.38ProAsn: 1.38 ± 0.039
2.859ProPro: 2.859 ± 0.078
1.494ProGln: 1.494 ± 0.038
3.0ProArg: 3.0 ± 0.061
2.679ProSer: 2.679 ± 0.044
2.759ProThr: 2.759 ± 0.054
4.402ProVal: 4.402 ± 0.072
0.658ProTrp: 0.658 ± 0.024
1.148ProTyr: 1.148 ± 0.034
0.0ProXaa: 0.0 ± 0.0
Gln
4.138GlnAla: 4.138 ± 0.062
0.19GlnCys: 0.19 ± 0.015
1.344GlnAsp: 1.344 ± 0.037
1.118GlnGlu: 1.118 ± 0.035
1.037GlnPhe: 1.037 ± 0.035
2.45GlnGly: 2.45 ± 0.048
0.546GlnHis: 0.546 ± 0.021
1.687GlnIle: 1.687 ± 0.038
0.865GlnLys: 0.865 ± 0.029
2.753GlnLeu: 2.753 ± 0.054
0.754GlnMet: 0.754 ± 0.025
0.784GlnAsn: 0.784 ± 0.031
1.682GlnPro: 1.682 ± 0.038
1.069GlnGln: 1.069 ± 0.04
2.301GlnArg: 2.301 ± 0.046
1.671GlnSer: 1.671 ± 0.042
1.709GlnThr: 1.709 ± 0.043
2.24GlnVal: 2.24 ± 0.048
0.366GlnTrp: 0.366 ± 0.022
0.63GlnTyr: 0.63 ± 0.023
0.0GlnXaa: 0.0 ± 0.0
Arg
9.083ArgAla: 9.083 ± 0.118
0.456ArgCys: 0.456 ± 0.02
4.487ArgAsp: 4.487 ± 0.064
3.587ArgGlu: 3.587 ± 0.068
2.946ArgPhe: 2.946 ± 0.055
5.131ArgGly: 5.131 ± 0.064
1.611ArgHis: 1.611 ± 0.041
4.19ArgIle: 4.19 ± 0.063
1.958ArgLys: 1.958 ± 0.043
7.647ArgLeu: 7.647 ± 0.105
1.948ArgMet: 1.948 ± 0.039
1.791ArgAsn: 1.791 ± 0.039
3.599ArgPro: 3.599 ± 0.064
2.302ArgGln: 2.302 ± 0.052
5.521ArgArg: 5.521 ± 0.087
3.607ArgSer: 3.607 ± 0.061
3.723ArgThr: 3.723 ± 0.064
5.03ArgVal: 5.03 ± 0.067
1.206ArgTrp: 1.206 ± 0.035
1.905ArgTyr: 1.905 ± 0.041
0.0ArgXaa: 0.0 ± 0.0
Ser
6.589SerAla: 6.589 ± 0.083
0.346SerCys: 0.346 ± 0.017
3.137SerAsp: 3.137 ± 0.055
2.29SerGlu: 2.29 ± 0.043
2.059SerPhe: 2.059 ± 0.047
5.515SerGly: 5.515 ± 0.071
0.861SerHis: 0.861 ± 0.029
2.705SerIle: 2.705 ± 0.05
1.385SerLys: 1.385 ± 0.042
4.771SerLeu: 4.771 ± 0.074
1.115SerMet: 1.115 ± 0.03
1.429SerAsn: 1.429 ± 0.035
2.835SerPro: 2.835 ± 0.052
1.41SerGln: 1.41 ± 0.039
3.237SerArg: 3.237 ± 0.049
2.579SerSer: 2.579 ± 0.047
2.689SerThr: 2.689 ± 0.054
3.903SerVal: 3.903 ± 0.064
0.726SerTrp: 0.726 ± 0.024
1.345SerTyr: 1.345 ± 0.038
0.0SerXaa: 0.0 ± 0.0
Thr
7.162ThrAla: 7.162 ± 0.093
0.375ThrCys: 0.375 ± 0.018
3.129ThrAsp: 3.129 ± 0.048
2.314ThrGlu: 2.314 ± 0.04
1.978ThrPhe: 1.978 ± 0.044
5.767ThrGly: 5.767 ± 0.077
0.973ThrHis: 0.973 ± 0.029
3.459ThrIle: 3.459 ± 0.062
1.53ThrLys: 1.53 ± 0.039
6.248ThrLeu: 6.248 ± 0.085
1.331ThrMet: 1.331 ± 0.041
1.457ThrAsn: 1.457 ± 0.045
3.756ThrPro: 3.756 ± 0.061
1.472ThrGln: 1.472 ± 0.038
3.623ThrArg: 3.623 ± 0.053
2.833ThrSer: 2.833 ± 0.063
3.188ThrThr: 3.188 ± 0.062
4.392ThrVal: 4.392 ± 0.065
0.66ThrTrp: 0.66 ± 0.027
1.219ThrTyr: 1.219 ± 0.037
0.0ThrXaa: 0.0 ± 0.0
Val
10.571ValAla: 10.571 ± 0.117
0.505ValCys: 0.505 ± 0.021
4.447ValAsp: 4.447 ± 0.058
4.06ValGlu: 4.06 ± 0.071
2.409ValPhe: 2.409 ± 0.046
5.872ValGly: 5.872 ± 0.076
1.277ValHis: 1.277 ± 0.039
3.747ValIle: 3.747 ± 0.062
2.131ValLys: 2.131 ± 0.047
6.83ValLeu: 6.83 ± 0.082
1.64ValMet: 1.64 ± 0.046
1.933ValAsn: 1.933 ± 0.052
4.236ValPro: 4.236 ± 0.071
2.026ValGln: 2.026 ± 0.04
5.282ValArg: 5.282 ± 0.073
4.243ValSer: 4.243 ± 0.055
4.713ValThr: 4.713 ± 0.079
5.611ValVal: 5.611 ± 0.085
0.917ValTrp: 0.917 ± 0.031
1.435ValTyr: 1.435 ± 0.036
0.0ValXaa: 0.0 ± 0.0
Trp
1.46TrpAla: 1.46 ± 0.038
0.112TrpCys: 0.112 ± 0.01
0.699TrpAsp: 0.699 ± 0.027
0.512TrpGlu: 0.512 ± 0.02
0.584TrpPhe: 0.584 ± 0.024
0.966TrpGly: 0.966 ± 0.031
0.347TrpHis: 0.347 ± 0.016
0.694TrpIle: 0.694 ± 0.026
0.455TrpLys: 0.455 ± 0.021
1.658TrpLeu: 1.658 ± 0.042
0.355TrpMet: 0.355 ± 0.02
0.453TrpAsn: 0.453 ± 0.021
0.696TrpPro: 0.696 ± 0.023
0.555TrpGln: 0.555 ± 0.02
1.314TrpArg: 1.314 ± 0.035
0.928TrpSer: 0.928 ± 0.026
0.894TrpThr: 0.894 ± 0.03
0.831TrpVal: 0.831 ± 0.029
0.267TrpTrp: 0.267 ± 0.017
0.27TrpTyr: 0.27 ± 0.017
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.791TyrAla: 2.791 ± 0.057
0.195TyrCys: 0.195 ± 0.013
1.673TyrAsp: 1.673 ± 0.044
1.111TyrGlu: 1.111 ± 0.034
0.857TyrPhe: 0.857 ± 0.03
2.217TyrGly: 2.217 ± 0.05
0.462TyrHis: 0.462 ± 0.021
0.903TyrIle: 0.903 ± 0.03
0.597TyrLys: 0.597 ± 0.025
2.128TyrLeu: 2.128 ± 0.04
0.368TyrMet: 0.368 ± 0.019
0.62TyrAsn: 0.62 ± 0.027
1.096TyrPro: 1.096 ± 0.035
0.711TyrGln: 0.711 ± 0.027
1.943TyrArg: 1.943 ± 0.041
1.138TyrSer: 1.138 ± 0.034
1.13TyrThr: 1.13 ± 0.038
1.61TyrVal: 1.61 ± 0.037
0.36TyrTrp: 0.36 ± 0.02
0.66TyrTyr: 0.66 ± 0.027
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 3524 proteins (1120184 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