Amino acid dipepetide frequency for Clostridiaceae bacterium

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
10.614AlaAla: 10.614 ± 0.15
1.377AlaCys: 1.377 ± 0.04
4.918AlaAsp: 4.918 ± 0.061
6.072AlaGlu: 6.072 ± 0.076
3.468AlaPhe: 3.468 ± 0.064
8.653AlaGly: 8.653 ± 0.114
1.157AlaHis: 1.157 ± 0.031
4.463AlaIle: 4.463 ± 0.08
4.139AlaLys: 4.139 ± 0.074
8.252AlaLeu: 8.252 ± 0.086
2.581AlaMet: 2.581 ± 0.044
2.271AlaAsn: 2.271 ± 0.042
2.791AlaPro: 2.791 ± 0.058
2.719AlaGln: 2.719 ± 0.049
4.514AlaArg: 4.514 ± 0.064
4.481AlaSer: 4.481 ± 0.067
2.761AlaThr: 2.761 ± 0.055
7.459AlaVal: 7.459 ± 0.081
0.809AlaTrp: 0.809 ± 0.028
2.931AlaTyr: 2.931 ± 0.046
0.0AlaXaa: 0.0 ± 0.0
Cys
1.209CysAla: 1.209 ± 0.031
0.309CysCys: 0.309 ± 0.016
0.812CysAsp: 0.812 ± 0.026
0.89CysGlu: 0.89 ± 0.027
0.784CysPhe: 0.784 ± 0.025
1.647CysGly: 1.647 ± 0.041
0.312CysHis: 0.312 ± 0.015
1.055CysIle: 1.055 ± 0.032
0.641CysLys: 0.641 ± 0.023
1.407CysLeu: 1.407 ± 0.033
0.502CysMet: 0.502 ± 0.021
0.481CysAsn: 0.481 ± 0.019
0.713CysPro: 0.713 ± 0.029
0.423CysGln: 0.423 ± 0.018
1.114CysArg: 1.114 ± 0.027
1.04CysSer: 1.04 ± 0.029
0.682CysThr: 0.682 ± 0.021
1.034CysVal: 1.034 ± 0.029
0.133CysTrp: 0.133 ± 0.01
0.623CysTyr: 0.623 ± 0.024
0.0CysXaa: 0.0 ± 0.0
Asp
4.369AspAla: 4.369 ± 0.06
0.851AspCys: 0.851 ± 0.025
2.527AspAsp: 2.527 ± 0.06
4.203AspGlu: 4.203 ± 0.064
2.567AspPhe: 2.567 ± 0.042
4.895AspGly: 4.895 ± 0.093
0.776AspHis: 0.776 ± 0.023
4.001AspIle: 4.001 ± 0.061
2.785AspLys: 2.785 ± 0.054
4.386AspLeu: 4.386 ± 0.057
1.82AspMet: 1.82 ± 0.038
1.745AspAsn: 1.745 ± 0.039
2.043AspPro: 2.043 ± 0.041
1.302AspGln: 1.302 ± 0.034
3.177AspArg: 3.177 ± 0.054
2.966AspSer: 2.966 ± 0.048
2.742AspThr: 2.742 ± 0.041
3.398AspVal: 3.398 ± 0.052
0.627AspTrp: 0.627 ± 0.025
2.66AspTyr: 2.66 ± 0.043
0.0AspXaa: 0.0 ± 0.0
Glu
7.063GluAla: 7.063 ± 0.092
0.857GluCys: 0.857 ± 0.025
4.144GluAsp: 4.144 ± 0.066
7.393GluGlu: 7.393 ± 0.105
2.428GluPhe: 2.428 ± 0.045
4.939GluGly: 4.939 ± 0.071
1.306GluHis: 1.306 ± 0.033
5.242GluIle: 5.242 ± 0.076
5.63GluLys: 5.63 ± 0.07
6.889GluLeu: 6.889 ± 0.086
2.373GluMet: 2.373 ± 0.046
3.408GluAsn: 3.408 ± 0.057
2.093GluPro: 2.093 ± 0.047
2.914GluGln: 2.914 ± 0.06
4.972GluArg: 4.972 ± 0.08
3.504GluSer: 3.504 ± 0.057
3.971GluThr: 3.971 ± 0.061
3.892GluVal: 3.892 ± 0.055
0.822GluTrp: 0.822 ± 0.024
3.036GluTyr: 3.036 ± 0.057
0.0GluXaa: 0.0 ± 0.0
Phe
3.148PheAla: 3.148 ± 0.055
0.937PheCys: 0.937 ± 0.03
2.383PheAsp: 2.383 ± 0.043
2.649PheGlu: 2.649 ± 0.045
1.875PhePhe: 1.875 ± 0.047
3.166PheGly: 3.166 ± 0.057
0.883PheHis: 0.883 ± 0.028
2.699PheIle: 2.699 ± 0.051
1.849PheLys: 1.849 ± 0.043
4.165PheLeu: 4.165 ± 0.08
1.208PheMet: 1.208 ± 0.034
1.388PheAsn: 1.388 ± 0.031
1.54PhePro: 1.54 ± 0.041
1.259PheGln: 1.259 ± 0.033
2.105PheArg: 2.105 ± 0.045
2.889PheSer: 2.889 ± 0.052
2.123PheThr: 2.123 ± 0.045
2.681PheVal: 2.681 ± 0.049
0.428PheTrp: 0.428 ± 0.021
1.819PheTyr: 1.819 ± 0.042
0.0PheXaa: 0.0 ± 0.0
Gly
6.616GlyAla: 6.616 ± 0.1
1.353GlyCys: 1.353 ± 0.032
3.875GlyAsp: 3.875 ± 0.067
5.616GlyGlu: 5.616 ± 0.073
3.274GlyPhe: 3.274 ± 0.059
6.091GlyGly: 6.091 ± 0.095
1.268GlyHis: 1.268 ± 0.034
5.984GlyIle: 5.984 ± 0.078
4.998GlyLys: 4.998 ± 0.073
6.635GlyLeu: 6.635 ± 0.085
2.726GlyMet: 2.726 ± 0.053
2.994GlyAsn: 2.994 ± 0.049
1.784GlyPro: 1.784 ± 0.059
2.44GlyGln: 2.44 ± 0.042
5.042GlyArg: 5.042 ± 0.075
4.775GlySer: 4.775 ± 0.091
4.069GlyThr: 4.069 ± 0.063
4.95GlyVal: 4.95 ± 0.069
0.982GlyTrp: 0.982 ± 0.033
3.252GlyTyr: 3.252 ± 0.057
0.0GlyXaa: 0.0 ± 0.0
His
1.223HisAla: 1.223 ± 0.038
0.269HisCys: 0.269 ± 0.015
0.785HisAsp: 0.785 ± 0.028
1.004HisGlu: 1.004 ± 0.031
0.848HisPhe: 0.848 ± 0.026
1.313HisGly: 1.313 ± 0.035
0.372HisHis: 0.372 ± 0.018
1.367HisIle: 1.367 ± 0.03
0.794HisLys: 0.794 ± 0.024
1.575HisLeu: 1.575 ± 0.034
0.56HisMet: 0.56 ± 0.022
0.627HisAsn: 0.627 ± 0.023
0.858HisPro: 0.858 ± 0.026
0.453HisGln: 0.453 ± 0.019
0.867HisArg: 0.867 ± 0.025
1.048HisSer: 1.048 ± 0.029
0.954HisThr: 0.954 ± 0.026
1.076HisVal: 1.076 ± 0.029
0.163HisTrp: 0.163 ± 0.011
0.714HisTyr: 0.714 ± 0.024
0.0HisXaa: 0.0 ± 0.0
Ile
5.214IleAla: 5.214 ± 0.079
1.261IleCys: 1.261 ± 0.031
3.475IleAsp: 3.475 ± 0.057
4.267IleGlu: 4.267 ± 0.068
2.517IlePhe: 2.517 ± 0.056
4.723IleGly: 4.723 ± 0.067
1.34IleHis: 1.34 ± 0.033
3.89IleIle: 3.89 ± 0.07
3.12IleLys: 3.12 ± 0.06
6.586IleLeu: 6.586 ± 0.087
1.701IleMet: 1.701 ± 0.039
2.304IleAsn: 2.304 ± 0.052
3.008IlePro: 3.008 ± 0.048
2.133IleGln: 2.133 ± 0.045
4.726IleArg: 4.726 ± 0.067
4.29IleSer: 4.29 ± 0.061
3.44IleThr: 3.44 ± 0.052
4.12IleVal: 4.12 ± 0.058
0.681IleTrp: 0.681 ± 0.022
2.438IleTyr: 2.438 ± 0.044
0.0IleXaa: 0.0 ± 0.0
Lys
4.98LysAla: 4.98 ± 0.066
0.592LysCys: 0.592 ± 0.023
3.081LysAsp: 3.081 ± 0.056
5.725LysGlu: 5.725 ± 0.077
1.52LysPhe: 1.52 ± 0.034
4.091LysGly: 4.091 ± 0.06
0.883LysHis: 0.883 ± 0.025
3.494LysIle: 3.494 ± 0.053
4.998LysLys: 4.998 ± 0.076
4.428LysLeu: 4.428 ± 0.068
1.697LysMet: 1.697 ± 0.036
2.694LysAsn: 2.694 ± 0.048
1.913LysPro: 1.913 ± 0.043
1.937LysGln: 1.937 ± 0.046
3.973LysArg: 3.973 ± 0.057
3.031LysSer: 3.031 ± 0.046
3.329LysThr: 3.329 ± 0.058
3.005LysVal: 3.005 ± 0.057
0.593LysTrp: 0.593 ± 0.024
2.197LysTyr: 2.197 ± 0.043
0.0LysXaa: 0.0 ± 0.0
Leu
7.812LeuAla: 7.812 ± 0.093
1.764LeuCys: 1.764 ± 0.046
4.851LeuAsp: 4.851 ± 0.079
6.655LeuGlu: 6.655 ± 0.089
4.143LeuPhe: 4.143 ± 0.072
6.081LeuGly: 6.081 ± 0.07
1.53LeuHis: 1.53 ± 0.033
5.484LeuIle: 5.484 ± 0.083
6.042LeuLys: 6.042 ± 0.077
9.14LeuLeu: 9.14 ± 0.109
2.549LeuMet: 2.549 ± 0.046
3.605LeuAsn: 3.605 ± 0.062
3.706LeuPro: 3.706 ± 0.059
2.668LeuGln: 2.668 ± 0.041
4.636LeuArg: 4.636 ± 0.07
6.642LeuSer: 6.642 ± 0.076
4.895LeuThr: 4.895 ± 0.059
4.956LeuVal: 4.956 ± 0.059
0.922LeuTrp: 0.922 ± 0.029
3.516LeuTyr: 3.516 ± 0.054
0.0LeuXaa: 0.0 ± 0.0
Met
2.905MetAla: 2.905 ± 0.05
0.344MetCys: 0.344 ± 0.016
1.937MetAsp: 1.937 ± 0.04
2.703MetGlu: 2.703 ± 0.052
1.018MetPhe: 1.018 ± 0.033
2.396MetGly: 2.396 ± 0.045
0.399MetHis: 0.399 ± 0.018
1.886MetIle: 1.886 ± 0.043
2.258MetLys: 2.258 ± 0.045
2.732MetLeu: 2.732 ± 0.046
0.923MetMet: 0.923 ± 0.028
1.378MetAsn: 1.378 ± 0.03
1.109MetPro: 1.109 ± 0.032
0.989MetGln: 0.989 ± 0.026
1.632MetArg: 1.632 ± 0.033
1.636MetSer: 1.636 ± 0.039
1.652MetThr: 1.652 ± 0.036
1.781MetVal: 1.781 ± 0.039
0.216MetTrp: 0.216 ± 0.012
0.877MetTyr: 0.877 ± 0.027
0.0MetXaa: 0.0 ± 0.0
Asn
2.902AsnAla: 2.902 ± 0.05
0.534AsnCys: 0.534 ± 0.018
1.653AsnAsp: 1.653 ± 0.036
2.454AsnGlu: 2.454 ± 0.049
1.346AsnPhe: 1.346 ± 0.035
3.319AsnGly: 3.319 ± 0.054
0.732AsnHis: 0.732 ± 0.024
2.652AsnIle: 2.652 ± 0.043
1.836AsnLys: 1.836 ± 0.041
3.264AsnLeu: 3.264 ± 0.051
1.216AsnMet: 1.216 ± 0.032
1.245AsnAsn: 1.245 ± 0.037
1.825AsnPro: 1.825 ± 0.04
1.295AsnGln: 1.295 ± 0.034
2.383AsnArg: 2.383 ± 0.038
1.908AsnSer: 1.908 ± 0.044
1.865AsnThr: 1.865 ± 0.04
2.369AsnVal: 2.369 ± 0.044
0.367AsnTrp: 0.367 ± 0.016
1.471AsnTyr: 1.471 ± 0.035
0.0AsnXaa: 0.0 ± 0.0
Pro
3.366ProAla: 3.366 ± 0.055
0.537ProCys: 0.537 ± 0.018
2.657ProAsp: 2.657 ± 0.053
3.633ProGlu: 3.633 ± 0.061
1.627ProPhe: 1.627 ± 0.043
3.168ProGly: 3.168 ± 0.058
0.601ProHis: 0.601 ± 0.022
1.758ProIle: 1.758 ± 0.035
1.649ProLys: 1.649 ± 0.037
3.04ProLeu: 3.04 ± 0.053
0.897ProMet: 0.897 ± 0.03
1.024ProAsn: 1.024 ± 0.026
1.075ProPro: 1.075 ± 0.031
1.142ProGln: 1.142 ± 0.034
1.383ProArg: 1.383 ± 0.031
1.854ProSer: 1.854 ± 0.037
1.26ProThr: 1.26 ± 0.044
3.224ProVal: 3.224 ± 0.055
0.373ProTrp: 0.373 ± 0.016
1.448ProTyr: 1.448 ± 0.035
0.0ProXaa: 0.0 ± 0.0
Gln
2.962GlnAla: 2.962 ± 0.056
0.357GlnCys: 0.357 ± 0.018
1.588GlnAsp: 1.588 ± 0.038
2.762GlnGlu: 2.762 ± 0.052
1.121GlnPhe: 1.121 ± 0.031
2.256GlnGly: 2.256 ± 0.055
0.407GlnHis: 0.407 ± 0.017
2.374GlnIle: 2.374 ± 0.043
2.39GlnLys: 2.39 ± 0.048
2.357GlnLeu: 2.357 ± 0.047
1.196GlnMet: 1.196 ± 0.033
1.364GlnAsn: 1.364 ± 0.033
0.977GlnPro: 0.977 ± 0.033
0.977GlnGln: 0.977 ± 0.032
1.651GlnArg: 1.651 ± 0.041
1.682GlnSer: 1.682 ± 0.039
1.873GlnThr: 1.873 ± 0.037
1.797GlnVal: 1.797 ± 0.037
0.326GlnTrp: 0.326 ± 0.016
1.319GlnTyr: 1.319 ± 0.029
0.0GlnXaa: 0.0 ± 0.0
Arg
4.322ArgAla: 4.322 ± 0.061
0.788ArgCys: 0.788 ± 0.023
2.947ArgAsp: 2.947 ± 0.055
5.48ArgGlu: 5.48 ± 0.079
2.537ArgPhe: 2.537 ± 0.054
3.668ArgGly: 3.668 ± 0.059
1.08ArgHis: 1.08 ± 0.027
4.341ArgIle: 4.341 ± 0.058
3.511ArgLys: 3.511 ± 0.056
5.954ArgLeu: 5.954 ± 0.086
2.136ArgMet: 2.136 ± 0.039
2.231ArgAsn: 2.231 ± 0.041
1.995ArgPro: 1.995 ± 0.041
2.223ArgGln: 2.223 ± 0.049
4.117ArgArg: 4.117 ± 0.064
2.837ArgSer: 2.837 ± 0.047
2.581ArgThr: 2.581 ± 0.044
3.339ArgVal: 3.339 ± 0.049
0.576ArgTrp: 0.576 ± 0.025
2.454ArgTyr: 2.454 ± 0.052
0.0ArgXaa: 0.0 ± 0.0
Ser
4.866SerAla: 4.866 ± 0.069
0.889SerCys: 0.889 ± 0.025
3.011SerAsp: 3.011 ± 0.049
3.803SerGlu: 3.803 ± 0.052
2.759SerPhe: 2.759 ± 0.046
5.902SerGly: 5.902 ± 0.074
1.045SerHis: 1.045 ± 0.03
3.505SerIle: 3.505 ± 0.056
2.456SerLys: 2.456 ± 0.047
5.427SerLeu: 5.427 ± 0.065
1.824SerMet: 1.824 ± 0.043
1.761SerAsn: 1.761 ± 0.043
2.101SerPro: 2.101 ± 0.037
1.838SerGln: 1.838 ± 0.043
3.67SerArg: 3.67 ± 0.054
3.545SerSer: 3.545 ± 0.071
2.25SerThr: 2.25 ± 0.046
4.332SerVal: 4.332 ± 0.055
0.603SerTrp: 0.603 ± 0.024
2.386SerTyr: 2.386 ± 0.039
0.0SerXaa: 0.0 ± 0.0
Thr
4.951ThrAla: 4.951 ± 0.07
0.647ThrCys: 0.647 ± 0.022
2.956ThrAsp: 2.956 ± 0.053
3.634ThrGlu: 3.634 ± 0.055
1.905ThrPhe: 1.905 ± 0.038
4.782ThrGly: 4.782 ± 0.091
0.726ThrHis: 0.726 ± 0.023
3.189ThrIle: 3.189 ± 0.053
2.327ThrLys: 2.327 ± 0.045
4.245ThrLeu: 4.245 ± 0.056
1.291ThrMet: 1.291 ± 0.029
1.551ThrAsn: 1.551 ± 0.037
2.077ThrPro: 2.077 ± 0.04
1.45ThrGln: 1.45 ± 0.032
2.226ThrArg: 2.226 ± 0.04
2.369ThrSer: 2.369 ± 0.05
2.223ThrThr: 2.223 ± 0.054
3.972ThrVal: 3.972 ± 0.057
0.47ThrTrp: 0.47 ± 0.02
1.757ThrTyr: 1.757 ± 0.035
0.0ThrXaa: 0.0 ± 0.0
Val
4.353ValAla: 4.353 ± 0.068
1.357ValCys: 1.357 ± 0.033
3.365ValAsp: 3.365 ± 0.053
4.172ValGlu: 4.172 ± 0.061
3.171ValPhe: 3.171 ± 0.069
3.85ValGly: 3.85 ± 0.07
0.997ValHis: 0.997 ± 0.027
4.572ValIle: 4.572 ± 0.058
4.046ValLys: 4.046 ± 0.057
6.296ValLeu: 6.296 ± 0.085
2.072ValMet: 2.072 ± 0.041
2.545ValAsn: 2.545 ± 0.043
2.405ValPro: 2.405 ± 0.054
1.816ValGln: 1.816 ± 0.037
3.739ValArg: 3.739 ± 0.06
4.693ValSer: 4.693 ± 0.069
3.597ValThr: 3.597 ± 0.062
4.017ValVal: 4.017 ± 0.07
0.724ValTrp: 0.724 ± 0.026
2.594ValTyr: 2.594 ± 0.048
0.0ValXaa: 0.0 ± 0.0
Trp
0.681TrpAla: 0.681 ± 0.025
0.165TrpCys: 0.165 ± 0.011
0.613TrpAsp: 0.613 ± 0.022
0.809TrpGlu: 0.809 ± 0.028
0.454TrpPhe: 0.454 ± 0.018
0.736TrpGly: 0.736 ± 0.024
0.226TrpHis: 0.226 ± 0.013
0.684TrpIle: 0.684 ± 0.023
0.718TrpLys: 0.718 ± 0.026
1.089TrpLeu: 1.089 ± 0.037
0.354TrpMet: 0.354 ± 0.019
0.496TrpAsn: 0.496 ± 0.019
0.261TrpPro: 0.261 ± 0.013
0.354TrpGln: 0.354 ± 0.016
0.58TrpArg: 0.58 ± 0.025
0.524TrpSer: 0.524 ± 0.021
0.405TrpThr: 0.405 ± 0.019
0.537TrpVal: 0.537 ± 0.02
0.114TrpTrp: 0.114 ± 0.011
0.527TrpTyr: 0.527 ± 0.023
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.876TyrAla: 2.876 ± 0.05
0.622TyrCys: 0.622 ± 0.025
2.262TyrAsp: 2.262 ± 0.053
2.953TyrGlu: 2.953 ± 0.057
1.831TyrPhe: 1.831 ± 0.039
3.049TyrGly: 3.049 ± 0.053
0.834TyrHis: 0.834 ± 0.024
2.594TyrIle: 2.594 ± 0.045
1.976TyrLys: 1.976 ± 0.04
3.731TyrLeu: 3.731 ± 0.055
1.136TyrMet: 1.136 ± 0.029
1.524TyrAsn: 1.524 ± 0.036
1.441TyrPro: 1.441 ± 0.039
1.407TyrGln: 1.407 ± 0.034
2.61TyrArg: 2.61 ± 0.054
2.261TyrSer: 2.261 ± 0.044
2.072TyrThr: 2.072 ± 0.038
2.442TyrVal: 2.442 ± 0.045
0.398TyrTrp: 0.398 ± 0.018
1.832TyrTyr: 1.832 ± 0.051
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 4379 proteins (1312029 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