Amino acid dipepetide frequency for Thermoactinomyces sp. AS95

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
6.091AlaAla: 6.091 ± 0.107
0.778AlaCys: 0.778 ± 0.037
3.714AlaAsp: 3.714 ± 0.068
5.228AlaGlu: 5.228 ± 0.088
3.227AlaPhe: 3.227 ± 0.07
6.601AlaGly: 6.601 ± 0.117
1.467AlaHis: 1.467 ± 0.048
4.922AlaIle: 4.922 ± 0.089
4.759AlaLys: 4.759 ± 0.096
7.612AlaLeu: 7.612 ± 0.11
2.142AlaMet: 2.142 ± 0.062
2.14AlaAsn: 2.14 ± 0.056
2.417AlaPro: 2.417 ± 0.058
2.33AlaGln: 2.33 ± 0.062
3.962AlaArg: 3.962 ± 0.075
3.879AlaSer: 3.879 ± 0.081
3.145AlaThr: 3.145 ± 0.073
6.538AlaVal: 6.538 ± 0.11
0.886AlaTrp: 0.886 ± 0.037
2.354AlaTyr: 2.354 ± 0.05
0.0AlaXaa: 0.0 ± 0.0
Cys
0.536CysAla: 0.536 ± 0.028
0.125CysCys: 0.125 ± 0.016
0.474CysAsp: 0.474 ± 0.028
0.469CysGlu: 0.469 ± 0.025
0.449CysPhe: 0.449 ± 0.024
0.82CysGly: 0.82 ± 0.035
0.247CysHis: 0.247 ± 0.017
0.514CysIle: 0.514 ± 0.024
0.353CysLys: 0.353 ± 0.022
0.938CysLeu: 0.938 ± 0.033
0.216CysMet: 0.216 ± 0.017
0.245CysAsn: 0.245 ± 0.016
0.478CysPro: 0.478 ± 0.027
0.307CysGln: 0.307 ± 0.02
0.583CysArg: 0.583 ± 0.027
0.526CysSer: 0.526 ± 0.029
0.428CysThr: 0.428 ± 0.026
0.499CysVal: 0.499 ± 0.025
0.116CysTrp: 0.116 ± 0.012
0.311CysTyr: 0.311 ± 0.022
0.0CysXaa: 0.0 ± 0.0
Asp
3.393AspAla: 3.393 ± 0.075
0.409AspCys: 0.409 ± 0.023
2.182AspAsp: 2.182 ± 0.071
4.313AspGlu: 4.313 ± 0.102
2.157AspPhe: 2.157 ± 0.058
3.565AspGly: 3.565 ± 0.073
1.355AspHis: 1.355 ± 0.05
2.996AspIle: 2.996 ± 0.066
2.289AspLys: 2.289 ± 0.057
5.386AspLeu: 5.386 ± 0.087
1.174AspMet: 1.174 ± 0.041
1.075AspAsn: 1.075 ± 0.044
2.855AspPro: 2.855 ± 0.055
2.581AspGln: 2.581 ± 0.066
3.088AspArg: 3.088 ± 0.072
2.137AspSer: 2.137 ± 0.049
2.08AspThr: 2.08 ± 0.062
3.567AspVal: 3.567 ± 0.065
0.825AspTrp: 0.825 ± 0.035
1.739AspTyr: 1.739 ± 0.052
0.0AspXaa: 0.0 ± 0.0
Glu
5.929GluAla: 5.929 ± 0.095
0.466GluCys: 0.466 ± 0.023
3.423GluAsp: 3.423 ± 0.075
7.575GluGlu: 7.575 ± 0.142
2.069GluPhe: 2.069 ± 0.054
4.359GluGly: 4.359 ± 0.078
1.569GluHis: 1.569 ± 0.05
5.369GluIle: 5.369 ± 0.093
7.104GluLys: 7.104 ± 0.125
6.64GluLeu: 6.64 ± 0.105
2.406GluMet: 2.406 ± 0.066
3.038GluAsn: 3.038 ± 0.067
2.481GluPro: 2.481 ± 0.057
3.798GluGln: 3.798 ± 0.084
4.162GluArg: 4.162 ± 0.089
3.261GluSer: 3.261 ± 0.059
3.741GluThr: 3.741 ± 0.077
5.318GluVal: 5.318 ± 0.102
1.138GluTrp: 1.138 ± 0.044
2.088GluTyr: 2.088 ± 0.052
0.0GluXaa: 0.0 ± 0.0
Phe
3.154PheAla: 3.154 ± 0.07
0.451PheCys: 0.451 ± 0.027
2.116PheAsp: 2.116 ± 0.054
2.5PheGlu: 2.5 ± 0.06
2.322PhePhe: 2.322 ± 0.074
3.128PheGly: 3.128 ± 0.075
1.193PheHis: 1.193 ± 0.04
2.713PheIle: 2.713 ± 0.072
1.777PheLys: 1.777 ± 0.052
4.539PheLeu: 4.539 ± 0.114
1.018PheMet: 1.018 ± 0.034
1.166PheAsn: 1.166 ± 0.04
1.951PhePro: 1.951 ± 0.054
1.779PheGln: 1.779 ± 0.055
2.138PheArg: 2.138 ± 0.059
2.823PheSer: 2.823 ± 0.068
2.092PheThr: 2.092 ± 0.052
3.033PheVal: 3.033 ± 0.076
0.525PheTrp: 0.525 ± 0.029
1.533PheTyr: 1.533 ± 0.054
0.0PheXaa: 0.0 ± 0.0
Gly
5.256GlyAla: 5.256 ± 0.105
0.767GlyCys: 0.767 ± 0.034
3.359GlyAsp: 3.359 ± 0.066
5.111GlyGlu: 5.111 ± 0.086
3.359GlyPhe: 3.359 ± 0.079
5.432GlyGly: 5.432 ± 0.118
1.493GlyHis: 1.493 ± 0.048
5.812GlyIle: 5.812 ± 0.095
5.515GlyLys: 5.515 ± 0.094
7.101GlyLeu: 7.101 ± 0.113
2.343GlyMet: 2.343 ± 0.06
2.483GlyAsn: 2.483 ± 0.062
2.123GlyPro: 2.123 ± 0.064
2.52GlyGln: 2.52 ± 0.058
3.606GlyArg: 3.606 ± 0.074
3.768GlySer: 3.768 ± 0.071
4.049GlyThr: 4.049 ± 0.084
5.634GlyVal: 5.634 ± 0.102
1.183GlyTrp: 1.183 ± 0.044
2.63GlyTyr: 2.63 ± 0.058
0.0GlyXaa: 0.0 ± 0.0
His
1.709HisAla: 1.709 ± 0.047
0.237HisCys: 0.237 ± 0.018
0.996HisAsp: 0.996 ± 0.033
1.442HisGlu: 1.442 ± 0.052
1.081HisPhe: 1.081 ± 0.039
1.66HisGly: 1.66 ± 0.049
0.794HisHis: 0.794 ± 0.034
1.414HisIle: 1.414 ± 0.068
0.881HisLys: 0.881 ± 0.034
2.653HisLeu: 2.653 ± 0.075
0.579HisMet: 0.579 ± 0.031
0.555HisAsn: 0.555 ± 0.028
1.714HisPro: 1.714 ± 0.049
1.306HisGln: 1.306 ± 0.042
1.354HisArg: 1.354 ± 0.048
1.108HisSer: 1.108 ± 0.037
1.052HisThr: 1.052 ± 0.043
1.548HisVal: 1.548 ± 0.049
0.333HisTrp: 0.333 ± 0.022
0.867HisTyr: 0.867 ± 0.031
0.0HisXaa: 0.0 ± 0.0
Ile
5.337IleAla: 5.337 ± 0.101
0.676IleCys: 0.676 ± 0.034
3.379IleAsp: 3.379 ± 0.078
4.467IleGlu: 4.467 ± 0.086
2.576IlePhe: 2.576 ± 0.067
5.313IleGly: 5.313 ± 0.098
1.944IleHis: 1.944 ± 0.046
3.839IleIle: 3.839 ± 0.086
3.177IleLys: 3.177 ± 0.074
6.591IleLeu: 6.591 ± 0.119
1.374IleMet: 1.374 ± 0.045
2.081IleAsn: 2.081 ± 0.056
3.51IlePro: 3.51 ± 0.066
3.067IleGln: 3.067 ± 0.076
4.469IleArg: 4.469 ± 0.081
3.988IleSer: 3.988 ± 0.079
3.313IleThr: 3.313 ± 0.078
4.467IleVal: 4.467 ± 0.092
0.696IleTrp: 0.696 ± 0.035
2.028IleTyr: 2.028 ± 0.055
0.0IleXaa: 0.0 ± 0.0
Lys
4.743LysAla: 4.743 ± 0.079
0.332LysCys: 0.332 ± 0.022
3.175LysAsp: 3.175 ± 0.075
6.985LysGlu: 6.985 ± 0.124
1.415LysPhe: 1.415 ± 0.041
4.197LysGly: 4.197 ± 0.075
1.38LysHis: 1.38 ± 0.043
3.98LysIle: 3.98 ± 0.089
6.094LysLys: 6.094 ± 0.103
5.028LysLeu: 5.028 ± 0.079
2.061LysMet: 2.061 ± 0.053
2.727LysAsn: 2.727 ± 0.063
2.64LysPro: 2.64 ± 0.065
3.12LysGln: 3.12 ± 0.071
3.816LysArg: 3.816 ± 0.077
2.888LysSer: 2.888 ± 0.061
3.202LysThr: 3.202 ± 0.079
4.574LysVal: 4.574 ± 0.089
1.044LysTrp: 1.044 ± 0.039
1.91LysTyr: 1.91 ± 0.058
0.0LysXaa: 0.0 ± 0.0
Leu
8.05LeuAla: 8.05 ± 0.107
0.856LeuCys: 0.856 ± 0.031
5.047LeuAsp: 5.047 ± 0.093
6.84LeuGlu: 6.84 ± 0.12
4.673LeuPhe: 4.673 ± 0.103
6.737LeuGly: 6.737 ± 0.112
2.157LeuHis: 2.157 ± 0.066
6.802LeuIle: 6.802 ± 0.129
7.173LeuLys: 7.173 ± 0.103
10.066LeuLeu: 10.066 ± 0.156
2.743LeuMet: 2.743 ± 0.06
3.797LeuAsn: 3.797 ± 0.065
4.664LeuPro: 4.664 ± 0.081
3.385LeuGln: 3.385 ± 0.066
4.543LeuArg: 4.543 ± 0.09
6.69LeuSer: 6.69 ± 0.095
5.11LeuThr: 5.11 ± 0.08
6.602LeuVal: 6.602 ± 0.115
1.032LeuTrp: 1.032 ± 0.042
2.859LeuTyr: 2.859 ± 0.066
0.0LeuXaa: 0.0 ± 0.0
Met
2.349MetAla: 2.349 ± 0.06
0.171MetCys: 0.171 ± 0.017
1.65MetAsp: 1.65 ± 0.044
2.293MetGlu: 2.293 ± 0.055
0.961MetPhe: 0.961 ± 0.036
2.038MetGly: 2.038 ± 0.054
0.474MetHis: 0.474 ± 0.023
2.059MetIle: 2.059 ± 0.059
2.29MetLys: 2.29 ± 0.052
2.467MetLeu: 2.467 ± 0.062
0.938MetMet: 0.938 ± 0.038
1.282MetAsn: 1.282 ± 0.04
1.036MetPro: 1.036 ± 0.042
1.022MetGln: 1.022 ± 0.04
1.331MetArg: 1.331 ± 0.037
1.552MetSer: 1.552 ± 0.048
1.439MetThr: 1.439 ± 0.043
2.114MetVal: 2.114 ± 0.058
0.237MetTrp: 0.237 ± 0.016
0.623MetTyr: 0.623 ± 0.032
0.0MetXaa: 0.0 ± 0.0
Asn
2.213AsnAla: 2.213 ± 0.056
0.253AsnCys: 0.253 ± 0.02
1.49AsnAsp: 1.49 ± 0.043
2.448AsnGlu: 2.448 ± 0.063
1.089AsnPhe: 1.089 ± 0.035
2.666AsnGly: 2.666 ± 0.056
1.036AsnHis: 1.036 ± 0.038
2.18AsnIle: 2.18 ± 0.056
1.862AsnLys: 1.862 ± 0.051
3.254AsnLeu: 3.254 ± 0.064
0.908AsnMet: 0.908 ± 0.034
1.041AsnAsn: 1.041 ± 0.038
2.163AsnPro: 2.163 ± 0.048
1.91AsnGln: 1.91 ± 0.061
2.386AsnArg: 2.386 ± 0.062
1.377AsnSer: 1.377 ± 0.051
1.459AsnThr: 1.459 ± 0.045
2.163AsnVal: 2.163 ± 0.059
0.436AsnTrp: 0.436 ± 0.024
0.983AsnTyr: 0.983 ± 0.036
0.0AsnXaa: 0.0 ± 0.0
Pro
3.216ProAla: 3.216 ± 0.068
0.306ProCys: 0.306 ± 0.021
3.019ProAsp: 3.019 ± 0.074
4.192ProGlu: 4.192 ± 0.074
2.182ProPhe: 2.182 ± 0.057
3.511ProGly: 3.511 ± 0.068
1.09ProHis: 1.09 ± 0.041
1.963ProIle: 1.963 ± 0.057
2.284ProLys: 2.284 ± 0.053
4.062ProLeu: 4.062 ± 0.078
0.994ProMet: 0.994 ± 0.042
1.177ProAsn: 1.177 ± 0.037
1.589ProPro: 1.589 ± 0.054
1.406ProGln: 1.406 ± 0.047
1.834ProArg: 1.834 ± 0.052
2.57ProSer: 2.57 ± 0.06
1.666ProThr: 1.666 ± 0.05
4.733ProVal: 4.733 ± 0.084
0.557ProTrp: 0.557 ± 0.03
1.499ProTyr: 1.499 ± 0.042
0.0ProXaa: 0.0 ± 0.0
Gln
3.478GlnAla: 3.478 ± 0.074
0.273GlnCys: 0.273 ± 0.019
1.536GlnAsp: 1.536 ± 0.048
3.101GlnGlu: 3.101 ± 0.075
1.429GlnPhe: 1.429 ± 0.048
2.632GlnGly: 2.632 ± 0.06
0.754GlnHis: 0.754 ± 0.033
2.814GlnIle: 2.814 ± 0.069
3.353GlnLys: 3.353 ± 0.08
4.139GlnLeu: 4.139 ± 0.089
1.323GlnMet: 1.323 ± 0.043
1.541GlnAsn: 1.541 ± 0.05
1.65GlnPro: 1.65 ± 0.058
1.763GlnGln: 1.763 ± 0.062
1.864GlnArg: 1.864 ± 0.056
2.152GlnSer: 2.152 ± 0.055
2.154GlnThr: 2.154 ± 0.053
3.054GlnVal: 3.054 ± 0.075
0.507GlnTrp: 0.507 ± 0.029
1.206GlnTyr: 1.206 ± 0.041
0.0GlnXaa: 0.0 ± 0.0
Arg
3.077ArgAla: 3.077 ± 0.073
0.435ArgCys: 0.435 ± 0.024
2.524ArgAsp: 2.524 ± 0.055
4.488ArgGlu: 4.488 ± 0.104
2.69ArgPhe: 2.69 ± 0.066
3.132ArgGly: 3.132 ± 0.06
1.234ArgHis: 1.234 ± 0.047
3.719ArgIle: 3.719 ± 0.066
4.041ArgLys: 4.041 ± 0.066
6.099ArgLeu: 6.099 ± 0.105
1.706ArgMet: 1.706 ± 0.046
1.808ArgAsn: 1.808 ± 0.054
2.133ArgPro: 2.133 ± 0.057
2.413ArgGln: 2.413 ± 0.057
3.06ArgArg: 3.06 ± 0.069
2.716ArgSer: 2.716 ± 0.065
2.342ArgThr: 2.342 ± 0.058
3.794ArgVal: 3.794 ± 0.075
0.782ArgTrp: 0.782 ± 0.031
2.009ArgTyr: 2.009 ± 0.054
0.0ArgXaa: 0.0 ± 0.0
Ser
3.704SerAla: 3.704 ± 0.065
0.466SerCys: 0.466 ± 0.027
2.478SerAsp: 2.478 ± 0.058
3.247SerGlu: 3.247 ± 0.073
2.845SerPhe: 2.845 ± 0.067
4.821SerGly: 4.821 ± 0.09
1.233SerHis: 1.233 ± 0.044
3.292SerIle: 3.292 ± 0.081
3.035SerLys: 3.035 ± 0.067
5.835SerLeu: 5.835 ± 0.092
1.638SerMet: 1.638 ± 0.045
1.551SerAsn: 1.551 ± 0.043
2.579SerPro: 2.579 ± 0.06
1.813SerGln: 1.813 ± 0.052
3.061SerArg: 3.061 ± 0.068
3.13SerSer: 3.13 ± 0.075
2.428SerThr: 2.428 ± 0.05
4.184SerVal: 4.184 ± 0.078
0.739SerTrp: 0.739 ± 0.035
1.705SerTyr: 1.705 ± 0.048
0.0SerXaa: 0.0 ± 0.0
Thr
3.67ThrAla: 3.67 ± 0.071
0.428ThrCys: 0.428 ± 0.026
2.405ThrAsp: 2.405 ± 0.061
3.053ThrGlu: 3.053 ± 0.078
2.009ThrPhe: 2.009 ± 0.054
4.889ThrGly: 4.889 ± 0.085
1.029ThrHis: 1.029 ± 0.039
3.264ThrIle: 3.264 ± 0.069
2.468ThrLys: 2.468 ± 0.06
4.828ThrLeu: 4.828 ± 0.092
1.278ThrMet: 1.278 ± 0.039
1.522ThrAsn: 1.522 ± 0.051
2.46ThrPro: 2.46 ± 0.049
1.382ThrGln: 1.382 ± 0.04
2.459ThrArg: 2.459 ± 0.054
2.424ThrSer: 2.424 ± 0.058
2.258ThrThr: 2.258 ± 0.061
4.072ThrVal: 4.072 ± 0.081
0.568ThrTrp: 0.568 ± 0.027
1.6ThrTyr: 1.6 ± 0.044
0.0ThrXaa: 0.0 ± 0.0
Val
5.38ValAla: 5.38 ± 0.096
0.788ValCys: 0.788 ± 0.033
3.864ValAsp: 3.864 ± 0.081
5.084ValGlu: 5.084 ± 0.082
3.281ValPhe: 3.281 ± 0.072
4.798ValGly: 4.798 ± 0.1
1.683ValHis: 1.683 ± 0.048
5.649ValIle: 5.649 ± 0.094
4.619ValLys: 4.619 ± 0.083
7.405ValLeu: 7.405 ± 0.111
2.127ValMet: 2.127 ± 0.058
2.583ValAsn: 2.583 ± 0.052
3.381ValPro: 3.381 ± 0.079
2.587ValGln: 2.587 ± 0.068
3.987ValArg: 3.987 ± 0.077
4.588ValSer: 4.588 ± 0.083
3.938ValThr: 3.938 ± 0.067
5.592ValVal: 5.592 ± 0.11
0.907ValTrp: 0.907 ± 0.035
2.371ValTyr: 2.371 ± 0.059
0.0ValXaa: 0.0 ± 0.0
Trp
0.81TrpAla: 0.81 ± 0.035
0.11TrpCys: 0.11 ± 0.011
0.62TrpAsp: 0.62 ± 0.029
0.894TrpGlu: 0.894 ± 0.033
0.669TrpPhe: 0.669 ± 0.034
0.836TrpGly: 0.836 ± 0.037
0.23TrpHis: 0.23 ± 0.018
1.161TrpIle: 1.161 ± 0.049
0.897TrpLys: 0.897 ± 0.04
1.546TrpLeu: 1.546 ± 0.054
0.58TrpMet: 0.58 ± 0.028
0.552TrpAsn: 0.552 ± 0.03
0.389TrpPro: 0.389 ± 0.023
0.478TrpGln: 0.478 ± 0.027
0.51TrpArg: 0.51 ± 0.03
0.677TrpSer: 0.677 ± 0.03
0.62TrpThr: 0.62 ± 0.029
0.935TrpVal: 0.935 ± 0.039
0.184TrpTrp: 0.184 ± 0.016
0.389TrpTyr: 0.389 ± 0.025
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.097TyrAla: 2.097 ± 0.056
0.307TyrCys: 0.307 ± 0.021
1.714TyrAsp: 1.714 ± 0.059
2.202TyrGlu: 2.202 ± 0.05
1.469TyrPhe: 1.469 ± 0.047
2.41TyrGly: 2.41 ± 0.052
0.92TyrHis: 0.92 ± 0.036
1.828TyrIle: 1.828 ± 0.055
1.339TyrLys: 1.339 ± 0.048
3.635TyrLeu: 3.635 ± 0.071
0.776TyrMet: 0.776 ± 0.032
0.952TyrAsn: 0.952 ± 0.04
1.639TyrPro: 1.639 ± 0.054
1.756TyrGln: 1.756 ± 0.05
1.99TyrArg: 1.99 ± 0.049
1.531TyrSer: 1.531 ± 0.047
1.552TyrThr: 1.552 ± 0.047
2.191TyrVal: 2.191 ± 0.054
0.393TyrTrp: 0.393 ± 0.027
1.206TyrTyr: 1.206 ± 0.048
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 2550 proteins (735677 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