Amino acid dipepetide frequency for Firmicutes bacterium M10-2

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
4.679AlaAla: 4.679 ± 0.098
1.151AlaCys: 1.151 ± 0.042
3.429AlaAsp: 3.429 ± 0.073
3.069AlaGlu: 3.069 ± 0.072
3.083AlaPhe: 3.083 ± 0.076
4.329AlaGly: 4.329 ± 0.081
1.358AlaHis: 1.358 ± 0.045
5.691AlaIle: 5.691 ± 0.096
5.157AlaLys: 5.157 ± 0.099
7.234AlaLeu: 7.234 ± 0.108
2.31AlaMet: 2.31 ± 0.069
3.055AlaAsn: 3.055 ± 0.077
1.889AlaPro: 1.889 ± 0.053
2.974AlaGln: 2.974 ± 0.066
2.549AlaArg: 2.549 ± 0.061
3.967AlaSer: 3.967 ± 0.08
3.137AlaThr: 3.137 ± 0.073
3.888AlaVal: 3.888 ± 0.085
0.648AlaTrp: 0.648 ± 0.033
2.828AlaTyr: 2.828 ± 0.062
0.0AlaXaa: 0.0 ± 0.0
Cys
1.13CysAla: 1.13 ± 0.044
0.187CysCys: 0.187 ± 0.017
0.837CysAsp: 0.837 ± 0.032
0.876CysGlu: 0.876 ± 0.04
0.737CysPhe: 0.737 ± 0.033
1.136CysGly: 1.136 ± 0.039
0.337CysHis: 0.337 ± 0.025
1.123CysIle: 1.123 ± 0.048
0.729CysLys: 0.729 ± 0.034
1.246CysLeu: 1.246 ± 0.045
0.491CysMet: 0.491 ± 0.027
0.47CysAsn: 0.47 ± 0.028
0.582CysPro: 0.582 ± 0.03
0.494CysGln: 0.494 ± 0.025
0.511CysArg: 0.511 ± 0.028
0.871CysSer: 0.871 ± 0.034
0.732CysThr: 0.732 ± 0.033
1.026CysVal: 1.026 ± 0.037
0.124CysTrp: 0.124 ± 0.013
0.386CysTyr: 0.386 ± 0.023
0.0CysXaa: 0.0 ± 0.0
Asp
3.713AspAla: 3.713 ± 0.083
0.709AspCys: 0.709 ± 0.034
2.736AspAsp: 2.736 ± 0.078
5.033AspGlu: 5.033 ± 0.092
2.601AspPhe: 2.601 ± 0.058
3.727AspGly: 3.727 ± 0.079
1.822AspHis: 1.822 ± 0.051
3.989AspIle: 3.989 ± 0.073
2.945AspLys: 2.945 ± 0.07
6.379AspLeu: 6.379 ± 0.105
1.559AspMet: 1.559 ± 0.047
1.851AspAsn: 1.851 ± 0.064
2.987AspPro: 2.987 ± 0.064
2.911AspGln: 2.911 ± 0.072
2.723AspArg: 2.723 ± 0.07
2.831AspSer: 2.831 ± 0.07
2.72AspThr: 2.72 ± 0.07
3.726AspVal: 3.726 ± 0.077
0.688AspTrp: 0.688 ± 0.032
2.404AspTyr: 2.404 ± 0.069
0.0AspXaa: 0.0 ± 0.0
Glu
4.556GluAla: 4.556 ± 0.083
0.763GluCys: 0.763 ± 0.038
3.989GluAsp: 3.989 ± 0.081
6.914GluGlu: 6.914 ± 0.138
2.482GluPhe: 2.482 ± 0.06
4.056GluGly: 4.056 ± 0.078
1.478GluHis: 1.478 ± 0.049
5.908GluIle: 5.908 ± 0.11
7.292GluLys: 7.292 ± 0.125
5.95GluLeu: 5.95 ± 0.099
2.576GluMet: 2.576 ± 0.06
4.603GluAsn: 4.603 ± 0.079
1.86GluPro: 1.86 ± 0.064
3.789GluGln: 3.789 ± 0.088
2.895GluArg: 2.895 ± 0.069
3.399GluSer: 3.399 ± 0.061
3.443GluThr: 3.443 ± 0.071
4.36GluVal: 4.36 ± 0.099
0.683GluTrp: 0.683 ± 0.029
2.621GluTyr: 2.621 ± 0.066
0.0GluXaa: 0.0 ± 0.0
Phe
3.129PheAla: 3.129 ± 0.072
0.727PheCys: 0.727 ± 0.035
3.055PheAsp: 3.055 ± 0.07
3.454PheGlu: 3.454 ± 0.075
2.165PhePhe: 2.165 ± 0.076
3.232PheGly: 3.232 ± 0.075
0.928PheHis: 0.928 ± 0.038
3.089PheIle: 3.089 ± 0.078
2.423PheLys: 2.423 ± 0.067
4.364PheLeu: 4.364 ± 0.094
1.352PheMet: 1.352 ± 0.045
1.734PheAsn: 1.734 ± 0.046
1.488PhePro: 1.488 ± 0.052
1.452PheGln: 1.452 ± 0.046
1.518PheArg: 1.518 ± 0.049
3.157PheSer: 3.157 ± 0.079
2.264PheThr: 2.264 ± 0.049
3.147PheVal: 3.147 ± 0.079
0.389PheTrp: 0.389 ± 0.022
1.789PheTyr: 1.789 ± 0.058
0.0PheXaa: 0.0 ± 0.0
Gly
4.183GlyAla: 4.183 ± 0.113
1.039GlyCys: 1.039 ± 0.038
2.681GlyAsp: 2.681 ± 0.07
3.354GlyGlu: 3.354 ± 0.075
3.038GlyPhe: 3.038 ± 0.062
3.794GlyGly: 3.794 ± 0.082
1.265GlyHis: 1.265 ± 0.043
5.778GlyIle: 5.778 ± 0.094
4.989GlyLys: 4.989 ± 0.088
5.711GlyLeu: 5.711 ± 0.091
2.285GlyMet: 2.285 ± 0.07
2.951GlyAsn: 2.951 ± 0.064
1.434GlyPro: 1.434 ± 0.049
2.187GlyGln: 2.187 ± 0.055
2.229GlyArg: 2.229 ± 0.05
3.707GlySer: 3.707 ± 0.079
3.714GlyThr: 3.714 ± 0.092
4.116GlyVal: 4.116 ± 0.075
0.829GlyTrp: 0.829 ± 0.039
3.021GlyTyr: 3.021 ± 0.065
0.0GlyXaa: 0.0 ± 0.0
His
1.346HisAla: 1.346 ± 0.04
0.35HisCys: 0.35 ± 0.021
1.313HisAsp: 1.313 ± 0.048
1.445HisGlu: 1.445 ± 0.045
1.061HisPhe: 1.061 ± 0.04
1.463HisGly: 1.463 ± 0.052
0.612HisHis: 0.612 ± 0.036
1.692HisIle: 1.692 ± 0.05
1.107HisLys: 1.107 ± 0.04
1.942HisLeu: 1.942 ± 0.053
0.605HisMet: 0.605 ± 0.026
0.796HisAsn: 0.796 ± 0.032
1.096HisPro: 1.096 ± 0.04
0.793HisGln: 0.793 ± 0.038
0.761HisArg: 0.761 ± 0.036
1.19HisSer: 1.19 ± 0.044
1.206HisThr: 1.206 ± 0.044
1.324HisVal: 1.324 ± 0.041
0.22HisTrp: 0.22 ± 0.015
0.929HisTyr: 0.929 ± 0.035
0.0HisXaa: 0.0 ± 0.0
Ile
6.125IleAla: 6.125 ± 0.102
1.278IleCys: 1.278 ± 0.049
5.476IleAsp: 5.476 ± 0.103
6.657IleGlu: 6.657 ± 0.113
3.173IlePhe: 3.173 ± 0.077
5.373IleGly: 5.373 ± 0.103
1.899IleHis: 1.899 ± 0.056
4.907IleIle: 4.907 ± 0.09
4.837IleLys: 4.837 ± 0.083
7.49IleLeu: 7.49 ± 0.125
2.052IleMet: 2.052 ± 0.057
3.244IleAsn: 3.244 ± 0.066
3.261IlePro: 3.261 ± 0.074
2.985IleGln: 2.985 ± 0.063
3.31IleArg: 3.31 ± 0.074
4.668IleSer: 4.668 ± 0.088
3.802IleThr: 3.802 ± 0.082
6.097IleVal: 6.097 ± 0.096
0.591IleTrp: 0.591 ± 0.03
2.885IleTyr: 2.885 ± 0.067
0.0IleXaa: 0.0 ± 0.0
Lys
4.891LysAla: 4.891 ± 0.1
0.56LysCys: 0.56 ± 0.028
4.999LysAsp: 4.999 ± 0.106
8.239LysGlu: 8.239 ± 0.116
1.94LysPhe: 1.94 ± 0.055
4.053LysGly: 4.053 ± 0.082
1.258LysHis: 1.258 ± 0.044
5.664LysIle: 5.664 ± 0.103
7.65LysLys: 7.65 ± 0.133
5.134LysLeu: 5.134 ± 0.093
2.343LysMet: 2.343 ± 0.063
4.086LysAsn: 4.086 ± 0.078
2.034LysPro: 2.034 ± 0.062
2.986LysGln: 2.986 ± 0.06
3.1LysArg: 3.1 ± 0.069
3.307LysSer: 3.307 ± 0.073
3.983LysThr: 3.983 ± 0.074
4.225LysVal: 4.225 ± 0.08
0.591LysTrp: 0.591 ± 0.032
2.715LysTyr: 2.715 ± 0.063
0.0LysXaa: 0.0 ± 0.0
Leu
6.428LeuAla: 6.428 ± 0.119
1.576LeuCys: 1.576 ± 0.045
5.853LeuAsp: 5.853 ± 0.105
6.453LeuGlu: 6.453 ± 0.102
4.649LeuPhe: 4.649 ± 0.096
5.613LeuGly: 5.613 ± 0.107
1.908LeuHis: 1.908 ± 0.047
7.448LeuIle: 7.448 ± 0.117
6.861LeuLys: 6.861 ± 0.114
8.601LeuLeu: 8.601 ± 0.158
2.724LeuMet: 2.724 ± 0.065
4.452LeuAsn: 4.452 ± 0.09
3.309LeuPro: 3.309 ± 0.076
3.022LeuGln: 3.022 ± 0.066
3.493LeuArg: 3.493 ± 0.068
6.34LeuSer: 6.34 ± 0.109
4.27LeuThr: 4.27 ± 0.077
5.601LeuVal: 5.601 ± 0.092
0.899LeuTrp: 0.899 ± 0.042
3.482LeuTyr: 3.482 ± 0.093
0.0LeuXaa: 0.0 ± 0.0
Met
2.2MetAla: 2.2 ± 0.06
0.316MetCys: 0.316 ± 0.021
1.945MetAsp: 1.945 ± 0.055
2.18MetGlu: 2.18 ± 0.056
1.077MetPhe: 1.077 ± 0.042
1.643MetGly: 1.643 ± 0.051
0.592MetHis: 0.592 ± 0.029
2.863MetIle: 2.863 ± 0.064
2.96MetLys: 2.96 ± 0.062
2.503MetLeu: 2.503 ± 0.062
0.974MetMet: 0.974 ± 0.04
2.009MetAsn: 2.009 ± 0.052
1.145MetPro: 1.145 ± 0.046
0.999MetGln: 0.999 ± 0.038
1.151MetArg: 1.151 ± 0.042
1.827MetSer: 1.827 ± 0.056
1.495MetThr: 1.495 ± 0.044
1.753MetVal: 1.753 ± 0.047
0.187MetTrp: 0.187 ± 0.019
0.971MetTyr: 0.971 ± 0.034
0.0MetXaa: 0.0 ± 0.0
Asn
3.249AsnAla: 3.249 ± 0.081
0.551AsnCys: 0.551 ± 0.028
3.057AsnAsp: 3.057 ± 0.069
4.05AsnGlu: 4.05 ± 0.088
1.788AsnPhe: 1.788 ± 0.05
3.546AsnGly: 3.546 ± 0.083
1.039AsnHis: 1.039 ± 0.039
3.503AsnIle: 3.503 ± 0.072
3.115AsnLys: 3.115 ± 0.075
3.908AsnLeu: 3.908 ± 0.074
1.378AsnMet: 1.378 ± 0.045
1.986AsnAsn: 1.986 ± 0.059
1.858AsnPro: 1.858 ± 0.06
1.921AsnGln: 1.921 ± 0.057
1.845AsnArg: 1.845 ± 0.053
2.358AsnSer: 2.358 ± 0.066
2.51AsnThr: 2.51 ± 0.059
3.332AsnVal: 3.332 ± 0.072
0.489AsnTrp: 0.489 ± 0.028
1.915AsnTyr: 1.915 ± 0.06
0.0AsnXaa: 0.0 ± 0.0
Pro
1.976ProAla: 1.976 ± 0.058
0.452ProCys: 0.452 ± 0.027
2.031ProAsp: 2.031 ± 0.052
2.514ProGlu: 2.514 ± 0.069
1.798ProPhe: 1.798 ± 0.054
1.819ProGly: 1.819 ± 0.051
0.638ProHis: 0.638 ± 0.032
3.002ProIle: 3.002 ± 0.067
2.364ProLys: 2.364 ± 0.063
3.034ProLeu: 3.034 ± 0.071
0.961ProMet: 0.961 ± 0.034
1.85ProAsn: 1.85 ± 0.051
0.543ProPro: 0.543 ± 0.029
1.365ProGln: 1.365 ± 0.05
1.075ProArg: 1.075 ± 0.038
2.018ProSer: 2.018 ± 0.065
1.835ProThr: 1.835 ± 0.062
2.384ProVal: 2.384 ± 0.087
0.36ProTrp: 0.36 ± 0.024
1.678ProTyr: 1.678 ± 0.047
0.0ProXaa: 0.0 ± 0.0
Gln
2.873GlnAla: 2.873 ± 0.055
0.575GlnCys: 0.575 ± 0.03
1.967GlnAsp: 1.967 ± 0.052
2.89GlnGlu: 2.89 ± 0.077
1.767GlnPhe: 1.767 ± 0.045
2.178GlnGly: 2.178 ± 0.06
0.563GlnHis: 0.563 ± 0.029
3.484GlnIle: 3.484 ± 0.082
3.304GlnLys: 3.304 ± 0.086
3.49GlnLeu: 3.49 ± 0.083
1.271GlnMet: 1.271 ± 0.041
1.89GlnAsn: 1.89 ± 0.059
1.06GlnPro: 1.06 ± 0.049
1.362GlnGln: 1.362 ± 0.055
1.511GlnArg: 1.511 ± 0.048
2.089GlnSer: 2.089 ± 0.055
2.191GlnThr: 2.191 ± 0.058
2.307GlnVal: 2.307 ± 0.056
0.454GlnTrp: 0.454 ± 0.026
1.737GlnTyr: 1.737 ± 0.056
0.0GlnXaa: 0.0 ± 0.0
Arg
2.152ArgAla: 2.152 ± 0.057
0.424ArgCys: 0.424 ± 0.026
1.714ArgAsp: 1.714 ± 0.055
2.578ArgGlu: 2.578 ± 0.056
2.145ArgPhe: 2.145 ± 0.059
1.843ArgGly: 1.843 ± 0.056
0.837ArgHis: 0.837 ± 0.036
3.454ArgIle: 3.454 ± 0.068
3.507ArgLys: 3.507 ± 0.071
3.756ArgLeu: 3.756 ± 0.086
1.31ArgMet: 1.31 ± 0.047
2.032ArgAsn: 2.032 ± 0.054
1.22ArgPro: 1.22 ± 0.047
1.572ArgGln: 1.572 ± 0.053
1.602ArgArg: 1.602 ± 0.058
2.371ArgSer: 2.371 ± 0.056
1.982ArgThr: 1.982 ± 0.054
2.094ArgVal: 2.094 ± 0.057
0.413ArgTrp: 0.413 ± 0.026
1.968ArgTyr: 1.968 ± 0.063
0.0ArgXaa: 0.0 ± 0.0
Ser
3.655SerAla: 3.655 ± 0.081
0.771SerCys: 0.771 ± 0.035
3.064SerAsp: 3.064 ± 0.072
3.294SerGlu: 3.294 ± 0.074
3.22SerPhe: 3.22 ± 0.071
4.031SerGly: 4.031 ± 0.076
1.238SerHis: 1.238 ± 0.042
4.69SerIle: 4.69 ± 0.085
3.87SerLys: 3.87 ± 0.083
5.827SerLeu: 5.827 ± 0.112
1.895SerMet: 1.895 ± 0.052
2.676SerAsn: 2.676 ± 0.066
1.547SerPro: 1.547 ± 0.044
2.377SerGln: 2.377 ± 0.063
2.241SerArg: 2.241 ± 0.065
3.645SerSer: 3.645 ± 0.077
2.862SerThr: 2.862 ± 0.065
3.73SerVal: 3.73 ± 0.076
0.628SerTrp: 0.628 ± 0.034
2.432SerTyr: 2.432 ± 0.059
0.0SerXaa: 0.0 ± 0.0
Thr
2.922ThrAla: 2.922 ± 0.067
0.625ThrCys: 0.625 ± 0.032
2.627ThrAsp: 2.627 ± 0.069
2.737ThrGlu: 2.737 ± 0.067
2.323ThrPhe: 2.323 ± 0.059
3.468ThrGly: 3.468 ± 0.071
1.003ThrHis: 1.003 ± 0.045
5.008ThrIle: 5.008 ± 0.097
3.496ThrLys: 3.496 ± 0.08
5.208ThrLeu: 5.208 ± 0.095
1.568ThrMet: 1.568 ± 0.049
2.466ThrAsn: 2.466 ± 0.077
2.147ThrPro: 2.147 ± 0.066
1.705ThrGln: 1.705 ± 0.051
1.689ThrArg: 1.689 ± 0.049
2.909ThrSer: 2.909 ± 0.061
2.841ThrThr: 2.841 ± 0.08
3.226ThrVal: 3.226 ± 0.079
0.488ThrTrp: 0.488 ± 0.028
2.255ThrTyr: 2.255 ± 0.048
0.0ThrXaa: 0.0 ± 0.0
Val
4.135ValAla: 4.135 ± 0.083
1.2ValCys: 1.2 ± 0.039
3.969ValAsp: 3.969 ± 0.082
4.14ValGlu: 4.14 ± 0.082
3.223ValPhe: 3.223 ± 0.08
3.665ValGly: 3.665 ± 0.093
1.304ValHis: 1.304 ± 0.048
4.918ValIle: 4.918 ± 0.09
4.099ValLys: 4.099 ± 0.075
6.613ValLeu: 6.613 ± 0.115
1.727ValMet: 1.727 ± 0.052
2.866ValAsn: 2.866 ± 0.067
2.393ValPro: 2.393 ± 0.06
2.188ValGln: 2.188 ± 0.058
2.579ValArg: 2.579 ± 0.064
4.025ValSer: 4.025 ± 0.076
3.07ValThr: 3.07 ± 0.09
4.439ValVal: 4.439 ± 0.094
0.618ValTrp: 0.618 ± 0.031
2.631ValTyr: 2.631 ± 0.06
0.0ValXaa: 0.0 ± 0.0
Trp
0.45TrpAla: 0.45 ± 0.025
0.174TrpCys: 0.174 ± 0.017
0.521TrpAsp: 0.521 ± 0.028
0.553TrpGlu: 0.553 ± 0.033
0.504TrpPhe: 0.504 ± 0.028
0.576TrpGly: 0.576 ± 0.03
0.208TrpHis: 0.208 ± 0.015
1.129TrpIle: 1.129 ± 0.042
0.774TrpLys: 0.774 ± 0.036
0.961TrpLeu: 0.961 ± 0.045
0.379TrpMet: 0.379 ± 0.025
0.637TrpAsn: 0.637 ± 0.032
0.253TrpPro: 0.253 ± 0.019
0.373TrpGln: 0.373 ± 0.022
0.305TrpArg: 0.305 ± 0.021
0.556TrpSer: 0.556 ± 0.031
0.479TrpThr: 0.479 ± 0.029
0.504TrpVal: 0.504 ± 0.027
0.117TrpTrp: 0.117 ± 0.015
0.368TrpTyr: 0.368 ± 0.022
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.631TyrAla: 2.631 ± 0.072
0.599TyrCys: 0.599 ± 0.027
2.791TyrAsp: 2.791 ± 0.068
3.192TyrGlu: 3.192 ± 0.066
2.081TyrPhe: 2.081 ± 0.056
2.762TyrGly: 2.762 ± 0.063
0.965TyrHis: 0.965 ± 0.04
2.769TyrIle: 2.769 ± 0.064
2.278TyrLys: 2.278 ± 0.057
3.63TyrLeu: 3.63 ± 0.084
1.026TyrMet: 1.026 ± 0.04
1.743TyrAsn: 1.743 ± 0.052
1.591TyrPro: 1.591 ± 0.053
1.51TyrGln: 1.51 ± 0.055
1.885TyrArg: 1.885 ± 0.048
2.459TyrSer: 2.459 ± 0.066
2.175TyrThr: 2.175 ± 0.054
2.524TyrVal: 2.524 ± 0.057
0.405TyrTrp: 0.405 ± 0.03
1.747TyrTyr: 1.747 ± 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 2256 proteins (690888 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