Amino acid dipepetide frequency for Allobacillus sp. SKP2-8

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
4.701AlaAla: 4.701 ± 0.096
0.55AlaCys: 0.55 ± 0.028
3.347AlaAsp: 3.347 ± 0.07
4.573AlaGlu: 4.573 ± 0.091
3.154AlaPhe: 3.154 ± 0.075
4.814AlaGly: 4.814 ± 0.083
1.197AlaHis: 1.197 ± 0.041
5.651AlaIle: 5.651 ± 0.099
4.214AlaLys: 4.214 ± 0.076
6.554AlaLeu: 6.554 ± 0.118
2.061AlaMet: 2.061 ± 0.055
2.726AlaAsn: 2.726 ± 0.061
1.881AlaPro: 1.881 ± 0.057
2.134AlaGln: 2.134 ± 0.05
2.437AlaArg: 2.437 ± 0.064
3.881AlaSer: 3.881 ± 0.081
3.54AlaThr: 3.54 ± 0.067
4.923AlaVal: 4.923 ± 0.089
0.559AlaTrp: 0.559 ± 0.024
2.334AlaTyr: 2.334 ± 0.053
0.0AlaXaa: 0.0 ± 0.0
Cys
0.32CysAla: 0.32 ± 0.019
0.069CysCys: 0.069 ± 0.01
0.354CysAsp: 0.354 ± 0.023
0.417CysGlu: 0.417 ± 0.022
0.213CysPhe: 0.213 ± 0.016
0.571CysGly: 0.571 ± 0.027
0.156CysHis: 0.156 ± 0.016
0.381CysIle: 0.381 ± 0.028
0.27CysLys: 0.27 ± 0.019
0.466CysLeu: 0.466 ± 0.026
0.144CysMet: 0.144 ± 0.015
0.207CysAsn: 0.207 ± 0.017
0.333CysPro: 0.333 ± 0.021
0.227CysGln: 0.227 ± 0.021
0.214CysArg: 0.214 ± 0.017
0.361CysSer: 0.361 ± 0.022
0.346CysThr: 0.346 ± 0.023
0.343CysVal: 0.343 ± 0.024
0.054CysTrp: 0.054 ± 0.008
0.169CysTyr: 0.169 ± 0.015
0.0CysXaa: 0.0 ± 0.0
Asp
3.243AspAla: 3.243 ± 0.066
0.31AspCys: 0.31 ± 0.023
3.149AspAsp: 3.149 ± 0.075
5.896AspGlu: 5.896 ± 0.111
2.661AspPhe: 2.661 ± 0.067
3.451AspGly: 3.451 ± 0.082
1.413AspHis: 1.413 ± 0.05
3.829AspIle: 3.829 ± 0.075
2.774AspLys: 2.774 ± 0.079
5.666AspLeu: 5.666 ± 0.097
1.386AspMet: 1.386 ± 0.044
1.65AspAsn: 1.65 ± 0.06
2.16AspPro: 2.16 ± 0.054
3.16AspGln: 3.16 ± 0.066
2.67AspArg: 2.67 ± 0.06
2.821AspSer: 2.821 ± 0.066
2.461AspThr: 2.461 ± 0.062
4.07AspVal: 4.07 ± 0.076
0.65AspTrp: 0.65 ± 0.029
2.484AspTyr: 2.484 ± 0.057
0.0AspXaa: 0.0 ± 0.0
Glu
5.623GluAla: 5.623 ± 0.103
0.307GluCys: 0.307 ± 0.024
4.56GluAsp: 4.56 ± 0.09
8.613GluGlu: 8.613 ± 0.146
2.643GluPhe: 2.643 ± 0.07
4.666GluGly: 4.666 ± 0.089
1.656GluHis: 1.656 ± 0.052
5.887GluIle: 5.887 ± 0.094
6.973GluLys: 6.973 ± 0.092
7.467GluLeu: 7.467 ± 0.125
2.507GluMet: 2.507 ± 0.069
4.143GluAsn: 4.143 ± 0.082
2.299GluPro: 2.299 ± 0.066
4.239GluGln: 4.239 ± 0.099
4.137GluArg: 4.137 ± 0.083
4.153GluSer: 4.153 ± 0.079
4.25GluThr: 4.25 ± 0.077
5.659GluVal: 5.659 ± 0.092
0.854GluTrp: 0.854 ± 0.034
2.233GluTyr: 2.233 ± 0.06
0.0GluXaa: 0.0 ± 0.0
Phe
2.796PheAla: 2.796 ± 0.075
0.274PheCys: 0.274 ± 0.02
2.671PheAsp: 2.671 ± 0.064
3.2PheGlu: 3.2 ± 0.068
2.484PhePhe: 2.484 ± 0.071
3.349PheGly: 3.349 ± 0.074
1.013PheHis: 1.013 ± 0.043
3.917PheIle: 3.917 ± 0.089
2.289PheLys: 2.289 ± 0.058
4.46PheLeu: 4.46 ± 0.101
1.329PheMet: 1.329 ± 0.042
1.89PheAsn: 1.89 ± 0.055
1.527PhePro: 1.527 ± 0.047
1.831PheGln: 1.831 ± 0.061
1.647PheArg: 1.647 ± 0.053
3.117PheSer: 3.117 ± 0.066
2.559PheThr: 2.559 ± 0.071
3.396PheVal: 3.396 ± 0.081
0.484PheTrp: 0.484 ± 0.028
1.82PheTyr: 1.82 ± 0.051
0.0PheXaa: 0.0 ± 0.0
Gly
4.394GlyAla: 4.394 ± 0.081
0.527GlyCys: 0.527 ± 0.031
3.376GlyAsp: 3.376 ± 0.07
4.944GlyGlu: 4.944 ± 0.084
3.393GlyPhe: 3.393 ± 0.08
4.56GlyGly: 4.56 ± 0.106
1.374GlyHis: 1.374 ± 0.049
5.51GlyIle: 5.51 ± 0.103
4.759GlyLys: 4.759 ± 0.086
6.233GlyLeu: 6.233 ± 0.11
2.164GlyMet: 2.164 ± 0.049
2.566GlyAsn: 2.566 ± 0.066
1.744GlyPro: 1.744 ± 0.062
2.171GlyGln: 2.171 ± 0.061
2.659GlyArg: 2.659 ± 0.081
3.93GlySer: 3.93 ± 0.075
3.774GlyThr: 3.774 ± 0.07
4.913GlyVal: 4.913 ± 0.081
0.731GlyTrp: 0.731 ± 0.034
2.663GlyTyr: 2.663 ± 0.069
0.0GlyXaa: 0.0 ± 0.0
His
1.381HisAla: 1.381 ± 0.051
0.149HisCys: 0.149 ± 0.016
1.069HisAsp: 1.069 ± 0.04
1.606HisGlu: 1.606 ± 0.046
1.089HisPhe: 1.089 ± 0.037
1.414HisGly: 1.414 ± 0.045
0.674HisHis: 0.674 ± 0.033
1.476HisIle: 1.476 ± 0.04
0.971HisLys: 0.971 ± 0.037
2.099HisLeu: 2.099 ± 0.053
0.494HisMet: 0.494 ± 0.027
0.733HisAsn: 0.733 ± 0.03
1.167HisPro: 1.167 ± 0.046
1.087HisGln: 1.087 ± 0.044
0.964HisArg: 0.964 ± 0.045
1.247HisSer: 1.247 ± 0.039
1.054HisThr: 1.054 ± 0.041
1.513HisVal: 1.513 ± 0.052
0.229HisTrp: 0.229 ± 0.02
0.879HisTyr: 0.879 ± 0.035
0.0HisXaa: 0.0 ± 0.0
Ile
5.661IleAla: 5.661 ± 0.09
0.46IleCys: 0.46 ± 0.024
4.91IleAsp: 4.91 ± 0.088
6.364IleGlu: 6.364 ± 0.093
3.38IlePhe: 3.38 ± 0.09
5.89IleGly: 5.89 ± 0.111
1.814IleHis: 1.814 ± 0.059
5.743IleIle: 5.743 ± 0.117
4.043IleLys: 4.043 ± 0.075
6.937IleLeu: 6.937 ± 0.133
1.724IleMet: 1.724 ± 0.047
3.166IleAsn: 3.166 ± 0.064
3.214IlePro: 3.214 ± 0.064
3.4IleGln: 3.4 ± 0.079
3.11IleArg: 3.11 ± 0.069
4.676IleSer: 4.676 ± 0.082
4.056IleThr: 4.056 ± 0.078
5.431IleVal: 5.431 ± 0.108
0.656IleTrp: 0.656 ± 0.031
2.481IleTyr: 2.481 ± 0.066
0.0IleXaa: 0.0 ± 0.0
Lys
3.946LysAla: 3.946 ± 0.086
0.221LysCys: 0.221 ± 0.02
3.844LysAsp: 3.844 ± 0.076
6.733LysGlu: 6.733 ± 0.118
1.813LysPhe: 1.813 ± 0.057
3.841LysGly: 3.841 ± 0.091
1.334LysHis: 1.334 ± 0.041
4.134LysIle: 4.134 ± 0.079
5.609LysLys: 5.609 ± 0.104
5.15LysLeu: 5.15 ± 0.084
2.061LysMet: 2.061 ± 0.05
3.436LysAsn: 3.436 ± 0.078
2.191LysPro: 2.191 ± 0.053
3.353LysGln: 3.353 ± 0.079
3.42LysArg: 3.42 ± 0.074
3.359LysSer: 3.359 ± 0.067
3.273LysThr: 3.273 ± 0.064
4.219LysVal: 4.219 ± 0.084
0.676LysTrp: 0.676 ± 0.037
1.997LysTyr: 1.997 ± 0.051
0.0LysXaa: 0.0 ± 0.0
Leu
6.747LeuAla: 6.747 ± 0.114
0.466LeuCys: 0.466 ± 0.023
5.201LeuAsp: 5.201 ± 0.091
6.706LeuGlu: 6.706 ± 0.104
5.009LeuPhe: 5.009 ± 0.108
6.219LeuGly: 6.219 ± 0.102
1.999LeuHis: 1.999 ± 0.064
7.473LeuIle: 7.473 ± 0.137
5.907LeuLys: 5.907 ± 0.101
9.706LeuLeu: 9.706 ± 0.15
2.561LeuMet: 2.561 ± 0.065
4.309LeuAsn: 4.309 ± 0.079
3.71LeuPro: 3.71 ± 0.066
3.546LeuGln: 3.546 ± 0.083
3.586LeuArg: 3.586 ± 0.069
6.526LeuSer: 6.526 ± 0.1
5.724LeuThr: 5.724 ± 0.09
6.193LeuVal: 6.193 ± 0.107
0.729LeuTrp: 0.729 ± 0.039
3.067LeuTyr: 3.067 ± 0.079
0.0LeuXaa: 0.0 ± 0.0
Met
2.029MetAla: 2.029 ± 0.051
0.129MetCys: 0.129 ± 0.013
1.766MetAsp: 1.766 ± 0.052
2.149MetGlu: 2.149 ± 0.063
1.037MetPhe: 1.037 ± 0.035
1.746MetGly: 1.746 ± 0.055
0.481MetHis: 0.481 ± 0.027
2.331MetIle: 2.331 ± 0.063
2.46MetLys: 2.46 ± 0.057
2.504MetLeu: 2.504 ± 0.066
0.881MetMet: 0.881 ± 0.031
1.796MetAsn: 1.796 ± 0.05
0.983MetPro: 0.983 ± 0.04
0.984MetGln: 0.984 ± 0.036
1.134MetArg: 1.134 ± 0.043
1.723MetSer: 1.723 ± 0.047
1.743MetThr: 1.743 ± 0.045
1.74MetVal: 1.74 ± 0.053
0.163MetTrp: 0.163 ± 0.015
0.703MetTyr: 0.703 ± 0.031
0.0MetXaa: 0.0 ± 0.0
Asn
2.65AsnAla: 2.65 ± 0.066
0.263AsnCys: 0.263 ± 0.019
2.57AsnAsp: 2.57 ± 0.058
4.13AsnGlu: 4.13 ± 0.075
1.77AsnPhe: 1.77 ± 0.058
2.92AsnGly: 2.92 ± 0.063
1.14AsnHis: 1.14 ± 0.044
3.131AsnIle: 3.131 ± 0.072
2.704AsnLys: 2.704 ± 0.068
3.669AsnLeu: 3.669 ± 0.068
1.207AsnMet: 1.207 ± 0.043
1.866AsnAsn: 1.866 ± 0.061
2.02AsnPro: 2.02 ± 0.055
2.586AsnGln: 2.586 ± 0.064
2.23AsnArg: 2.23 ± 0.058
2.07AsnSer: 2.07 ± 0.061
2.01AsnThr: 2.01 ± 0.058
2.91AsnVal: 2.91 ± 0.067
0.516AsnTrp: 0.516 ± 0.022
1.623AsnTyr: 1.623 ± 0.051
0.0AsnXaa: 0.0 ± 0.0
Pro
1.907ProAla: 1.907 ± 0.057
0.166ProCys: 0.166 ± 0.018
2.014ProAsp: 2.014 ± 0.055
3.144ProGlu: 3.144 ± 0.067
1.91ProPhe: 1.91 ± 0.05
2.247ProGly: 2.247 ± 0.061
0.776ProHis: 0.776 ± 0.034
2.876ProIle: 2.876 ± 0.064
2.253ProLys: 2.253 ± 0.065
3.269ProLeu: 3.269 ± 0.074
0.821ProMet: 0.821 ± 0.037
1.69ProAsn: 1.69 ± 0.046
0.96ProPro: 0.96 ± 0.039
1.064ProGln: 1.064 ± 0.035
1.174ProArg: 1.174 ± 0.037
2.25ProSer: 2.25 ± 0.057
2.217ProThr: 2.217 ± 0.056
2.769ProVal: 2.769 ± 0.066
0.344ProTrp: 0.344 ± 0.023
1.394ProTyr: 1.394 ± 0.052
0.0ProXaa: 0.0 ± 0.0
Gln
3.08GlnAla: 3.08 ± 0.067
0.136GlnCys: 0.136 ± 0.014
1.967GlnAsp: 1.967 ± 0.057
3.471GlnGlu: 3.471 ± 0.067
1.863GlnPhe: 1.863 ± 0.056
2.266GlnGly: 2.266 ± 0.058
0.764GlnHis: 0.764 ± 0.033
2.789GlnIle: 2.789 ± 0.066
2.737GlnLys: 2.737 ± 0.07
4.986GlnLeu: 4.986 ± 0.106
1.369GlnMet: 1.369 ± 0.045
1.681GlnAsn: 1.681 ± 0.054
1.543GlnPro: 1.543 ± 0.049
2.3GlnGln: 2.3 ± 0.074
1.717GlnArg: 1.717 ± 0.047
2.541GlnSer: 2.541 ± 0.072
2.316GlnThr: 2.316 ± 0.066
2.861GlnVal: 2.861 ± 0.067
0.459GlnTrp: 0.459 ± 0.026
1.36GlnTyr: 1.36 ± 0.043
0.0GlnXaa: 0.0 ± 0.0
Arg
2.371ArgAla: 2.371 ± 0.062
0.219ArgCys: 0.219 ± 0.018
2.076ArgAsp: 2.076 ± 0.06
3.393ArgGlu: 3.393 ± 0.074
2.227ArgPhe: 2.227 ± 0.067
2.41ArgGly: 2.41 ± 0.063
0.786ArgHis: 0.786 ± 0.036
3.154ArgIle: 3.154 ± 0.067
3.283ArgLys: 3.283 ± 0.076
4.437ArgLeu: 4.437 ± 0.093
1.377ArgMet: 1.377 ± 0.045
1.964ArgAsn: 1.964 ± 0.06
1.337ArgPro: 1.337 ± 0.043
1.734ArgGln: 1.734 ± 0.061
1.914ArgArg: 1.914 ± 0.057
2.264ArgSer: 2.264 ± 0.062
2.157ArgThr: 2.157 ± 0.061
2.87ArgVal: 2.87 ± 0.063
0.41ArgTrp: 0.41 ± 0.025
1.524ArgTyr: 1.524 ± 0.048
0.0ArgXaa: 0.0 ± 0.0
Ser
3.473SerAla: 3.473 ± 0.07
0.293SerCys: 0.293 ± 0.023
3.131SerAsp: 3.131 ± 0.067
4.45SerGlu: 4.45 ± 0.082
3.233SerPhe: 3.233 ± 0.066
4.191SerGly: 4.191 ± 0.095
1.243SerHis: 1.243 ± 0.041
4.964SerIle: 4.964 ± 0.102
3.651SerLys: 3.651 ± 0.065
5.8SerLeu: 5.8 ± 0.099
1.791SerMet: 1.791 ± 0.054
2.663SerAsn: 2.663 ± 0.074
1.977SerPro: 1.977 ± 0.055
2.086SerGln: 2.086 ± 0.059
2.301SerArg: 2.301 ± 0.059
3.739SerSer: 3.739 ± 0.088
3.14SerThr: 3.14 ± 0.073
4.09SerVal: 4.09 ± 0.079
0.544SerTrp: 0.544 ± 0.028
2.136SerTyr: 2.136 ± 0.063
0.0SerXaa: 0.0 ± 0.0
Thr
3.647ThrAla: 3.647 ± 0.066
0.294ThrCys: 0.294 ± 0.022
3.037ThrAsp: 3.037 ± 0.077
4.169ThrGlu: 4.169 ± 0.074
2.614ThrPhe: 2.614 ± 0.064
3.906ThrGly: 3.906 ± 0.074
1.054ThrHis: 1.054 ± 0.042
4.747ThrIle: 4.747 ± 0.086
3.179ThrLys: 3.179 ± 0.076
4.934ThrLeu: 4.934 ± 0.084
1.406ThrMet: 1.406 ± 0.041
2.494ThrAsn: 2.494 ± 0.061
2.013ThrPro: 2.013 ± 0.055
1.617ThrGln: 1.617 ± 0.049
1.863ThrArg: 1.863 ± 0.056
3.211ThrSer: 3.211 ± 0.071
3.009ThrThr: 3.009 ± 0.065
4.221ThrVal: 4.221 ± 0.096
0.486ThrTrp: 0.486 ± 0.025
2.111ThrTyr: 2.111 ± 0.054
0.0ThrXaa: 0.0 ± 0.0
Val
4.671ValAla: 4.671 ± 0.092
0.494ValCys: 0.494 ± 0.028
4.249ValAsp: 4.249 ± 0.09
5.371ValGlu: 5.371 ± 0.085
3.133ValPhe: 3.133 ± 0.068
4.91ValGly: 4.91 ± 0.092
1.41ValHis: 1.41 ± 0.045
5.831ValIle: 5.831 ± 0.106
4.164ValLys: 4.164 ± 0.082
6.433ValLeu: 6.433 ± 0.1
1.959ValMet: 1.959 ± 0.055
3.214ValAsn: 3.214 ± 0.068
2.524ValPro: 2.524 ± 0.056
2.591ValGln: 2.591 ± 0.066
2.684ValArg: 2.684 ± 0.066
4.45ValSer: 4.45 ± 0.101
4.124ValThr: 4.124 ± 0.068
5.179ValVal: 5.179 ± 0.096
0.559ValTrp: 0.559 ± 0.03
2.254ValTyr: 2.254 ± 0.052
0.0ValXaa: 0.0 ± 0.0
Trp
0.549TrpAla: 0.549 ± 0.03
0.05TrpCys: 0.05 ± 0.008
0.503TrpAsp: 0.503 ± 0.025
0.599TrpGlu: 0.599 ± 0.026
0.536TrpPhe: 0.536 ± 0.029
0.579TrpGly: 0.579 ± 0.029
0.179TrpHis: 0.179 ± 0.019
0.917TrpIle: 0.917 ± 0.043
0.65TrpLys: 0.65 ± 0.034
1.156TrpLeu: 1.156 ± 0.045
0.376TrpMet: 0.376 ± 0.023
0.464TrpAsn: 0.464 ± 0.028
0.254TrpPro: 0.254 ± 0.018
0.337TrpGln: 0.337 ± 0.025
0.334TrpArg: 0.334 ± 0.02
0.571TrpSer: 0.571 ± 0.031
0.493TrpThr: 0.493 ± 0.032
0.621TrpVal: 0.621 ± 0.034
0.116TrpTrp: 0.116 ± 0.013
0.331TrpTyr: 0.331 ± 0.023
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.044TyrAla: 2.044 ± 0.056
0.24TyrCys: 0.24 ± 0.019
2.11TyrAsp: 2.11 ± 0.054
2.94TyrGlu: 2.94 ± 0.064
1.891TyrPhe: 1.891 ± 0.051
2.436TyrGly: 2.436 ± 0.061
0.831TyrHis: 0.831 ± 0.037
2.374TyrIle: 2.374 ± 0.063
1.72TyrLys: 1.72 ± 0.051
3.457TyrLeu: 3.457 ± 0.075
0.86TyrMet: 0.86 ± 0.033
1.327TyrAsn: 1.327 ± 0.038
1.407TyrPro: 1.407 ± 0.046
1.759TyrGln: 1.759 ± 0.054
1.711TyrArg: 1.711 ± 0.055
2.006TyrSer: 2.006 ± 0.053
1.767TyrThr: 1.767 ± 0.045
2.286TyrVal: 2.286 ± 0.053
0.397TyrTrp: 0.397 ± 0.023
1.416TyrTyr: 1.416 ± 0.054
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 2475 proteins (700000 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