Amino acid dipepetide frequency for Geotoga petraea

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
2.863AlaAla: 2.863 ± 0.086
0.238AlaCys: 0.238 ± 0.022
2.31AlaAsp: 2.31 ± 0.074
3.072AlaGlu: 3.072 ± 0.075
2.469AlaPhe: 2.469 ± 0.072
3.262AlaGly: 3.262 ± 0.089
0.651AlaHis: 0.651 ± 0.032
4.618AlaIle: 4.618 ± 0.094
4.001AlaLys: 4.001 ± 0.09
4.68AlaLeu: 4.68 ± 0.101
1.279AlaMet: 1.279 ± 0.05
2.385AlaAsn: 2.385 ± 0.062
1.135AlaPro: 1.135 ± 0.044
1.117AlaGln: 1.117 ± 0.042
1.692AlaArg: 1.692 ± 0.056
2.802AlaSer: 2.802 ± 0.075
2.13AlaThr: 2.13 ± 0.074
3.038AlaVal: 3.038 ± 0.074
0.304AlaTrp: 0.304 ± 0.019
1.876AlaTyr: 1.876 ± 0.06
0.0AlaXaa: 0.0 ± 0.0
Cys
0.2CysAla: 0.2 ± 0.018
0.036CysCys: 0.036 ± 0.009
0.284CysAsp: 0.284 ± 0.02
0.34CysGlu: 0.34 ± 0.025
0.198CysPhe: 0.198 ± 0.02
0.501CysGly: 0.501 ± 0.031
0.115CysHis: 0.115 ± 0.013
0.336CysIle: 0.336 ± 0.025
0.339CysLys: 0.339 ± 0.024
0.309CysLeu: 0.309 ± 0.019
0.074CysMet: 0.074 ± 0.011
0.228CysAsn: 0.228 ± 0.022
0.294CysPro: 0.294 ± 0.025
0.097CysGln: 0.097 ± 0.011
0.156CysArg: 0.156 ± 0.017
0.339CysSer: 0.339 ± 0.025
0.241CysThr: 0.241 ± 0.019
0.244CysVal: 0.244 ± 0.021
0.035CysTrp: 0.035 ± 0.007
0.189CysTyr: 0.189 ± 0.016
0.0CysXaa: 0.0 ± 0.0
Asp
2.251AspAla: 2.251 ± 0.069
0.251AspCys: 0.251 ± 0.019
3.093AspAsp: 3.093 ± 0.084
5.005AspGlu: 5.005 ± 0.089
4.117AspPhe: 4.117 ± 0.087
3.002AspGly: 3.002 ± 0.085
0.808AspHis: 0.808 ± 0.037
6.403AspIle: 6.403 ± 0.114
5.458AspLys: 5.458 ± 0.092
5.907AspLeu: 5.907 ± 0.11
1.45AspMet: 1.45 ± 0.044
3.472AspAsn: 3.472 ± 0.077
1.695AspPro: 1.695 ± 0.058
1.312AspGln: 1.312 ± 0.045
1.714AspArg: 1.714 ± 0.047
3.415AspSer: 3.415 ± 0.078
2.442AspThr: 2.442 ± 0.07
3.342AspVal: 3.342 ± 0.071
0.483AspTrp: 0.483 ± 0.032
3.361AspTyr: 3.361 ± 0.077
0.0AspXaa: 0.0 ± 0.0
Glu
3.28GluAla: 3.28 ± 0.09
0.254GluCys: 0.254 ± 0.018
4.654GluAsp: 4.654 ± 0.085
7.583GluGlu: 7.583 ± 0.112
3.619GluPhe: 3.619 ± 0.077
3.675GluGly: 3.675 ± 0.072
0.94GluHis: 0.94 ± 0.035
9.006GluIle: 9.006 ± 0.12
10.074GluLys: 10.074 ± 0.164
6.792GluLeu: 6.792 ± 0.111
2.161GluMet: 2.161 ± 0.057
6.93GluAsn: 6.93 ± 0.127
1.536GluPro: 1.536 ± 0.046
1.775GluGln: 1.775 ± 0.062
2.415GluArg: 2.415 ± 0.064
3.704GluSer: 3.704 ± 0.071
3.317GluThr: 3.317 ± 0.076
4.287GluVal: 4.287 ± 0.087
0.531GluTrp: 0.531 ± 0.031
3.547GluTyr: 3.547 ± 0.082
0.0GluXaa: 0.0 ± 0.0
Phe
2.317PheAla: 2.317 ± 0.074
0.253PheCys: 0.253 ± 0.019
3.575PheAsp: 3.575 ± 0.074
4.291PheGlu: 4.291 ± 0.088
3.205PhePhe: 3.205 ± 0.1
3.324PheGly: 3.324 ± 0.085
0.661PheHis: 0.661 ± 0.029
5.267PheIle: 5.267 ± 0.109
4.181PheLys: 4.181 ± 0.082
5.356PheLeu: 5.356 ± 0.121
1.331PheMet: 1.331 ± 0.05
3.344PheAsn: 3.344 ± 0.075
1.381PhePro: 1.381 ± 0.047
1.195PheGln: 1.195 ± 0.042
1.421PheArg: 1.421 ± 0.049
4.335PheSer: 4.335 ± 0.096
2.436PheThr: 2.436 ± 0.069
3.194PheVal: 3.194 ± 0.074
0.48PheTrp: 0.48 ± 0.025
2.649PheTyr: 2.649 ± 0.073
0.0PheXaa: 0.0 ± 0.0
Gly
3.153GlyAla: 3.153 ± 0.089
0.381GlyCys: 0.381 ± 0.028
3.124GlyAsp: 3.124 ± 0.077
4.078GlyGlu: 4.078 ± 0.09
3.407GlyPhe: 3.407 ± 0.078
3.681GlyGly: 3.681 ± 0.104
0.912GlyHis: 0.912 ± 0.038
6.014GlyIle: 6.014 ± 0.102
5.025GlyLys: 5.025 ± 0.094
4.993GlyLeu: 4.993 ± 0.101
1.627GlyMet: 1.627 ± 0.052
3.205GlyAsn: 3.205 ± 0.079
1.277GlyPro: 1.277 ± 0.043
1.272GlyGln: 1.272 ± 0.045
1.919GlyArg: 1.919 ± 0.066
3.206GlySer: 3.206 ± 0.077
2.963GlyThr: 2.963 ± 0.077
3.998GlyVal: 3.998 ± 0.093
0.517GlyTrp: 0.517 ± 0.03
2.905GlyTyr: 2.905 ± 0.063
0.0GlyXaa: 0.0 ± 0.0
His
0.642HisAla: 0.642 ± 0.032
0.098HisCys: 0.098 ± 0.013
0.77HisAsp: 0.77 ± 0.037
1.023HisGlu: 1.023 ± 0.044
0.803HisPhe: 0.803 ± 0.034
0.906HisGly: 0.906 ± 0.036
0.268HisHis: 0.268 ± 0.022
1.218HisIle: 1.218 ± 0.048
1.061HisLys: 1.061 ± 0.042
1.23HisLeu: 1.23 ± 0.047
0.289HisMet: 0.289 ± 0.02
0.825HisAsn: 0.825 ± 0.035
0.622HisPro: 0.622 ± 0.033
0.297HisGln: 0.297 ± 0.022
0.495HisArg: 0.495 ± 0.028
0.869HisSer: 0.869 ± 0.04
0.661HisThr: 0.661 ± 0.03
0.784HisVal: 0.784 ± 0.04
0.11HisTrp: 0.11 ± 0.014
0.614HisTyr: 0.614 ± 0.032
0.0HisXaa: 0.0 ± 0.0
Ile
5.131IleAla: 5.131 ± 0.106
0.404IleCys: 0.404 ± 0.024
6.508IleAsp: 6.508 ± 0.107
8.095IleGlu: 8.095 ± 0.127
5.745IlePhe: 5.745 ± 0.134
5.367IleGly: 5.367 ± 0.102
1.206IleHis: 1.206 ± 0.044
9.864IleIle: 9.864 ± 0.149
9.902IleLys: 9.902 ± 0.159
9.028IleLeu: 9.028 ± 0.136
2.286IleMet: 2.286 ± 0.059
6.898IleAsn: 6.898 ± 0.122
3.516IlePro: 3.516 ± 0.081
2.18IleGln: 2.18 ± 0.056
2.887IleArg: 2.887 ± 0.074
7.446IleSer: 7.446 ± 0.123
4.863IleThr: 4.863 ± 0.096
5.48IleVal: 5.48 ± 0.101
0.66IleTrp: 0.66 ± 0.032
4.169IleTyr: 4.169 ± 0.076
0.0IleXaa: 0.0 ± 0.0
Lys
3.814LysAla: 3.814 ± 0.078
0.353LysCys: 0.353 ± 0.028
6.14LysAsp: 6.14 ± 0.103
9.054LysGlu: 9.054 ± 0.125
3.689LysPhe: 3.689 ± 0.078
4.748LysGly: 4.748 ± 0.092
1.245LysHis: 1.245 ± 0.038
10.806LysIle: 10.806 ± 0.156
10.79LysLys: 10.79 ± 0.166
7.428LysLeu: 7.428 ± 0.119
2.717LysMet: 2.717 ± 0.065
8.258LysAsn: 8.258 ± 0.148
2.392LysPro: 2.392 ± 0.061
2.067LysGln: 2.067 ± 0.054
3.211LysArg: 3.211 ± 0.084
5.347LysSer: 5.347 ± 0.095
4.563LysThr: 4.563 ± 0.094
5.175LysVal: 5.175 ± 0.095
0.614LysTrp: 0.614 ± 0.03
4.849LysTyr: 4.849 ± 0.104
0.0LysXaa: 0.0 ± 0.0
Leu
4.037LeuAla: 4.037 ± 0.097
0.345LeuCys: 0.345 ± 0.023
5.385LeuAsp: 5.385 ± 0.086
6.916LeuGlu: 6.916 ± 0.122
4.727LeuPhe: 4.727 ± 0.103
5.228LeuGly: 5.228 ± 0.096
1.112LeuHis: 1.112 ± 0.043
8.55LeuIle: 8.55 ± 0.148
9.67LeuLys: 9.67 ± 0.132
7.839LeuLeu: 7.839 ± 0.141
2.229LeuMet: 2.229 ± 0.065
6.441LeuAsn: 6.441 ± 0.11
2.722LeuPro: 2.722 ± 0.059
1.787LeuGln: 1.787 ± 0.051
2.873LeuArg: 2.873 ± 0.066
6.783LeuSer: 6.783 ± 0.119
4.435LeuThr: 4.435 ± 0.094
4.645LeuVal: 4.645 ± 0.085
0.629LeuTrp: 0.629 ± 0.032
3.494LeuTyr: 3.494 ± 0.078
0.0LeuXaa: 0.0 ± 0.0
Met
1.421MetAla: 1.421 ± 0.051
0.095MetCys: 0.095 ± 0.012
1.434MetAsp: 1.434 ± 0.046
1.633MetGlu: 1.633 ± 0.055
1.095MetPhe: 1.095 ± 0.038
1.696MetGly: 1.696 ± 0.063
0.289MetHis: 0.289 ± 0.022
2.371MetIle: 2.371 ± 0.064
2.855MetLys: 2.855 ± 0.067
1.843MetLeu: 1.843 ± 0.053
0.711MetMet: 0.711 ± 0.036
1.834MetAsn: 1.834 ± 0.057
0.823MetPro: 0.823 ± 0.042
0.549MetGln: 0.549 ± 0.03
0.897MetArg: 0.897 ± 0.034
1.565MetSer: 1.565 ± 0.055
1.2MetThr: 1.2 ± 0.042
1.513MetVal: 1.513 ± 0.056
0.139MetTrp: 0.139 ± 0.014
0.85MetTyr: 0.85 ± 0.036
0.0MetXaa: 0.0 ± 0.0
Asn
2.584AsnAla: 2.584 ± 0.067
0.289AsnCys: 0.289 ± 0.023
3.571AsnAsp: 3.571 ± 0.086
4.846AsnGlu: 4.846 ± 0.106
3.822AsnPhe: 3.822 ± 0.089
3.469AsnGly: 3.469 ± 0.081
0.946AsnHis: 0.946 ± 0.041
7.744AsnIle: 7.744 ± 0.14
6.456AsnLys: 6.456 ± 0.128
6.549AsnLeu: 6.549 ± 0.119
1.498AsnMet: 1.498 ± 0.043
4.812AsnAsn: 4.812 ± 0.114
2.335AsnPro: 2.335 ± 0.058
1.725AsnGln: 1.725 ± 0.058
1.972AsnArg: 1.972 ± 0.051
4.647AsnSer: 4.647 ± 0.111
2.891AsnThr: 2.891 ± 0.083
3.556AsnVal: 3.556 ± 0.074
0.549AsnTrp: 0.549 ± 0.03
3.678AsnTyr: 3.678 ± 0.096
0.0AsnXaa: 0.0 ± 0.0
Pro
1.365ProAla: 1.365 ± 0.051
0.144ProCys: 0.144 ± 0.016
1.817ProAsp: 1.817 ± 0.061
2.937ProGlu: 2.937 ± 0.072
1.719ProPhe: 1.719 ± 0.05
1.891ProGly: 1.891 ± 0.056
0.452ProHis: 0.452 ± 0.027
2.5ProIle: 2.5 ± 0.063
2.283ProLys: 2.283 ± 0.063
2.509ProLeu: 2.509 ± 0.056
0.587ProMet: 0.587 ± 0.032
1.749ProAsn: 1.749 ± 0.054
0.72ProPro: 0.72 ± 0.038
0.74ProGln: 0.74 ± 0.032
0.723ProArg: 0.723 ± 0.03
1.695ProSer: 1.695 ± 0.053
1.446ProThr: 1.446 ± 0.053
1.961ProVal: 1.961 ± 0.061
0.248ProTrp: 0.248 ± 0.023
1.333ProTyr: 1.333 ± 0.049
0.0ProXaa: 0.0 ± 0.0
Gln
1.142GlnAla: 1.142 ± 0.043
0.082GlnCys: 0.082 ± 0.012
1.185GlnAsp: 1.185 ± 0.042
1.807GlnGlu: 1.807 ± 0.057
1.015GlnPhe: 1.015 ± 0.039
1.176GlnGly: 1.176 ± 0.044
0.295GlnHis: 0.295 ± 0.02
2.466GlnIle: 2.466 ± 0.074
2.652GlnLys: 2.652 ± 0.063
1.837GlnLeu: 1.837 ± 0.054
0.711GlnMet: 0.711 ± 0.036
1.807GlnAsn: 1.807 ± 0.057
0.608GlnPro: 0.608 ± 0.035
0.619GlnGln: 0.619 ± 0.033
0.823GlnArg: 0.823 ± 0.036
1.269GlnSer: 1.269 ± 0.047
1.052GlnThr: 1.052 ± 0.037
1.286GlnVal: 1.286 ± 0.042
0.192GlnTrp: 0.192 ± 0.018
0.835GlnTyr: 0.835 ± 0.041
0.0GlnXaa: 0.0 ± 0.0
Arg
1.552ArgAla: 1.552 ± 0.053
0.163ArgCys: 0.163 ± 0.014
1.823ArgAsp: 1.823 ± 0.054
2.522ArgGlu: 2.522 ± 0.06
1.575ArgPhe: 1.575 ± 0.054
1.823ArgGly: 1.823 ± 0.05
0.424ArgHis: 0.424 ± 0.032
3.121ArgIle: 3.121 ± 0.073
3.177ArgLys: 3.177 ± 0.08
2.534ArgLeu: 2.534 ± 0.068
0.882ArgMet: 0.882 ± 0.036
2.088ArgAsn: 2.088 ± 0.054
0.805ArgPro: 0.805 ± 0.037
0.707ArgGln: 0.707 ± 0.029
1.28ArgArg: 1.28 ± 0.051
1.581ArgSer: 1.581 ± 0.048
1.513ArgThr: 1.513 ± 0.055
1.917ArgVal: 1.917 ± 0.058
0.251ArgTrp: 0.251 ± 0.019
1.409ArgTyr: 1.409 ± 0.05
0.0ArgXaa: 0.0 ± 0.0
Ser
2.74SerAla: 2.74 ± 0.07
0.346SerCys: 0.346 ± 0.028
3.438SerAsp: 3.438 ± 0.082
4.796SerGlu: 4.796 ± 0.096
3.954SerPhe: 3.954 ± 0.082
4.04SerGly: 4.04 ± 0.086
0.944SerHis: 0.944 ± 0.037
6.334SerIle: 6.334 ± 0.116
5.94SerLys: 5.94 ± 0.09
6.337SerLeu: 6.337 ± 0.118
1.507SerMet: 1.507 ± 0.046
3.966SerAsn: 3.966 ± 0.092
1.749SerPro: 1.749 ± 0.058
1.639SerGln: 1.639 ± 0.055
1.87SerArg: 1.87 ± 0.056
4.057SerSer: 4.057 ± 0.105
3.079SerThr: 3.079 ± 0.074
3.589SerVal: 3.589 ± 0.07
0.54SerTrp: 0.54 ± 0.032
2.822SerTyr: 2.822 ± 0.063
0.0SerXaa: 0.0 ± 0.0
Thr
2.418ThrAla: 2.418 ± 0.069
0.216ThrCys: 0.216 ± 0.02
2.674ThrAsp: 2.674 ± 0.071
3.215ThrGlu: 3.215 ± 0.068
2.41ThrPhe: 2.41 ± 0.067
3.321ThrGly: 3.321 ± 0.081
0.758ThrHis: 0.758 ± 0.034
4.598ThrIle: 4.598 ± 0.098
3.851ThrLys: 3.851 ± 0.073
4.336ThrLeu: 4.336 ± 0.099
0.98ThrMet: 0.98 ± 0.04
2.693ThrAsn: 2.693 ± 0.066
1.802ThrPro: 1.802 ± 0.055
1.157ThrGln: 1.157 ± 0.046
1.363ThrArg: 1.363 ± 0.048
2.905ThrSer: 2.905 ± 0.072
2.333ThrThr: 2.333 ± 0.074
3.008ThrVal: 3.008 ± 0.064
0.375ThrTrp: 0.375 ± 0.025
1.999ThrTyr: 1.999 ± 0.062
0.0ThrXaa: 0.0 ± 0.0
Val
2.858ValAla: 2.858 ± 0.085
0.334ValCys: 0.334 ± 0.026
3.653ValAsp: 3.653 ± 0.079
4.666ValGlu: 4.666 ± 0.085
3.38ValPhe: 3.38 ± 0.081
3.403ValGly: 3.403 ± 0.089
0.769ValHis: 0.769 ± 0.032
5.443ValIle: 5.443 ± 0.083
4.848ValLys: 4.848 ± 0.094
5.278ValLeu: 5.278 ± 0.099
1.342ValMet: 1.342 ± 0.044
3.294ValAsn: 3.294 ± 0.071
1.834ValPro: 1.834 ± 0.063
1.339ValGln: 1.339 ± 0.043
1.801ValArg: 1.801 ± 0.048
3.913ValSer: 3.913 ± 0.093
2.569ValThr: 2.569 ± 0.071
3.659ValVal: 3.659 ± 0.097
0.422ValTrp: 0.422 ± 0.026
2.521ValTyr: 2.521 ± 0.072
0.0ValXaa: 0.0 ± 0.0
Trp
0.409TrpAla: 0.409 ± 0.024
0.039TrpCys: 0.039 ± 0.008
0.478TrpAsp: 0.478 ± 0.028
0.545TrpGlu: 0.545 ± 0.029
0.381TrpPhe: 0.381 ± 0.025
0.539TrpGly: 0.539 ± 0.029
0.126TrpHis: 0.126 ± 0.014
0.684TrpIle: 0.684 ± 0.034
0.61TrpLys: 0.61 ± 0.031
0.669TrpLeu: 0.669 ± 0.032
0.21TrpMet: 0.21 ± 0.017
0.56TrpAsn: 0.56 ± 0.029
0.18TrpPro: 0.18 ± 0.018
0.213TrpGln: 0.213 ± 0.019
0.251TrpArg: 0.251 ± 0.019
0.422TrpSer: 0.422 ± 0.025
0.318TrpThr: 0.318 ± 0.023
0.452TrpVal: 0.452 ± 0.024
0.097TrpTrp: 0.097 ± 0.013
0.325TrpTyr: 0.325 ± 0.022
0.0TrpXaa: 0.0 ± 0.0
Tyr
1.743TyrAla: 1.743 ± 0.049
0.231TyrCys: 0.231 ± 0.022
3.064TyrAsp: 3.064 ± 0.081
3.654TyrGlu: 3.654 ± 0.086
2.864TyrPhe: 2.864 ± 0.08
2.606TyrGly: 2.606 ± 0.067
0.664TyrHis: 0.664 ± 0.033
4.291TyrIle: 4.291 ± 0.089
4.091TyrLys: 4.091 ± 0.083
4.394TyrLeu: 4.394 ± 0.101
0.941TyrMet: 0.941 ± 0.039
3.15TyrAsn: 3.15 ± 0.092
1.394TyrPro: 1.394 ± 0.048
1.073TyrGln: 1.073 ± 0.048
1.387TyrArg: 1.387 ± 0.048
3.388TyrSer: 3.388 ± 0.086
1.962TyrThr: 1.962 ± 0.056
2.197TyrVal: 2.197 ± 0.058
0.33TyrTrp: 0.33 ± 0.024
2.344TyrTyr: 2.344 ± 0.079
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 2070 proteins (660910 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