Amino acid dipepetide frequency for Peptoanaerobacter stomatis

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
2.904AlaAla: 2.904 ± 0.106
0.63AlaCys: 0.63 ± 0.032
3.237AlaAsp: 3.237 ± 0.071
3.218AlaGlu: 3.218 ± 0.076
2.546AlaPhe: 2.546 ± 0.077
3.811AlaGly: 3.811 ± 0.097
0.825AlaHis: 0.825 ± 0.039
5.454AlaIle: 5.454 ± 0.107
5.472AlaLys: 5.472 ± 0.099
5.277AlaLeu: 5.277 ± 0.1
1.727AlaMet: 1.727 ± 0.053
3.023AlaAsn: 3.023 ± 0.068
1.374AlaPro: 1.374 ± 0.067
1.821AlaGln: 1.821 ± 0.05
1.925AlaArg: 1.925 ± 0.058
3.253AlaSer: 3.253 ± 0.067
2.976AlaThr: 2.976 ± 0.069
3.922AlaVal: 3.922 ± 0.082
0.294AlaTrp: 0.294 ± 0.02
2.286AlaTyr: 2.286 ± 0.065
0.0AlaXaa: 0.0 ± 0.0
Cys
0.58CysAla: 0.58 ± 0.028
0.126CysCys: 0.126 ± 0.013
0.686CysAsp: 0.686 ± 0.036
0.722CysGlu: 0.722 ± 0.033
0.375CysPhe: 0.375 ± 0.021
0.851CysGly: 0.851 ± 0.044
0.179CysHis: 0.179 ± 0.018
1.051CysIle: 1.051 ± 0.046
0.886CysLys: 0.886 ± 0.034
0.666CysLeu: 0.666 ± 0.029
0.297CysMet: 0.297 ± 0.025
0.569CysAsn: 0.569 ± 0.03
0.396CysPro: 0.396 ± 0.029
0.221CysGln: 0.221 ± 0.017
0.303CysArg: 0.303 ± 0.023
0.686CysSer: 0.686 ± 0.033
0.496CysThr: 0.496 ± 0.029
0.593CysVal: 0.593 ± 0.031
0.056CysTrp: 0.056 ± 0.01
0.393CysTyr: 0.393 ± 0.026
0.0CysXaa: 0.0 ± 0.0
Asp
3.039AspAla: 3.039 ± 0.073
0.54AspCys: 0.54 ± 0.025
3.737AspAsp: 3.737 ± 0.08
5.746AspGlu: 5.746 ± 0.101
3.215AspPhe: 3.215 ± 0.069
3.405AspGly: 3.405 ± 0.077
0.519AspHis: 0.519 ± 0.028
7.824AspIle: 7.824 ± 0.129
6.148AspLys: 6.148 ± 0.115
4.606AspLeu: 4.606 ± 0.088
2.099AspMet: 2.099 ± 0.056
3.598AspAsn: 3.598 ± 0.077
1.211AspPro: 1.211 ± 0.048
0.697AspGln: 0.697 ± 0.034
1.999AspArg: 1.999 ± 0.05
3.226AspSer: 3.226 ± 0.076
3.248AspThr: 3.248 ± 0.069
4.029AspVal: 4.029 ± 0.083
0.366AspTrp: 0.366 ± 0.021
3.143AspTyr: 3.143 ± 0.067
0.0AspXaa: 0.0 ± 0.0
Glu
3.389GluAla: 3.389 ± 0.081
0.554GluCys: 0.554 ± 0.029
4.464GluAsp: 4.464 ± 0.092
6.307GluGlu: 6.307 ± 0.124
3.201GluPhe: 3.201 ± 0.067
3.017GluGly: 3.017 ± 0.072
1.094GluHis: 1.094 ± 0.039
7.101GluIle: 7.101 ± 0.11
8.797GluLys: 8.797 ± 0.13
6.469GluLeu: 6.469 ± 0.111
1.957GluMet: 1.957 ± 0.053
6.186GluAsn: 6.186 ± 0.121
1.435GluPro: 1.435 ± 0.049
2.533GluGln: 2.533 ± 0.074
2.327GluArg: 2.327 ± 0.066
3.326GluSer: 3.326 ± 0.072
3.122GluThr: 3.122 ± 0.078
4.405GluVal: 4.405 ± 0.088
0.353GluTrp: 0.353 ± 0.024
3.333GluTyr: 3.333 ± 0.077
0.0GluXaa: 0.0 ± 0.0
Phe
2.753PheAla: 2.753 ± 0.066
0.564PheCys: 0.564 ± 0.03
3.115PheAsp: 3.115 ± 0.075
3.389PheGlu: 3.389 ± 0.076
2.143PhePhe: 2.143 ± 0.068
2.556PheGly: 2.556 ± 0.07
0.486PheHis: 0.486 ± 0.028
4.262PheIle: 4.262 ± 0.11
3.369PheLys: 3.369 ± 0.069
3.759PheLeu: 3.759 ± 0.097
1.315PheMet: 1.315 ± 0.043
2.37PheAsn: 2.37 ± 0.062
1.147PhePro: 1.147 ± 0.043
0.851PheGln: 0.851 ± 0.036
1.285PheArg: 1.285 ± 0.04
3.358PheSer: 3.358 ± 0.082
2.356PheThr: 2.356 ± 0.058
2.757PheVal: 2.757 ± 0.06
0.296PheTrp: 0.296 ± 0.018
1.771PheTyr: 1.771 ± 0.063
0.0PheXaa: 0.0 ± 0.0
Gly
3.62GlyAla: 3.62 ± 0.1
0.636GlyCys: 0.636 ± 0.04
3.055GlyAsp: 3.055 ± 0.072
3.933GlyGlu: 3.933 ± 0.087
2.878GlyPhe: 2.878 ± 0.074
3.942GlyGly: 3.942 ± 0.101
0.941GlyHis: 0.941 ± 0.039
5.778GlyIle: 5.778 ± 0.097
5.482GlyLys: 5.482 ± 0.103
4.621GlyLeu: 4.621 ± 0.09
1.678GlyMet: 1.678 ± 0.057
3.185GlyAsn: 3.185 ± 0.076
0.845GlyPro: 0.845 ± 0.036
1.612GlyGln: 1.612 ± 0.056
2.016GlyArg: 2.016 ± 0.062
3.487GlySer: 3.487 ± 0.076
3.08GlyThr: 3.08 ± 0.071
3.923GlyVal: 3.923 ± 0.081
0.354GlyTrp: 0.354 ± 0.025
2.978GlyTyr: 2.978 ± 0.067
0.0GlyXaa: 0.0 ± 0.0
His
0.64HisAla: 0.64 ± 0.031
0.19HisCys: 0.19 ± 0.017
0.689HisAsp: 0.689 ± 0.033
0.79HisGlu: 0.79 ± 0.037
0.689HisPhe: 0.689 ± 0.029
0.752HisGly: 0.752 ± 0.032
0.301HisHis: 0.301 ± 0.028
1.553HisIle: 1.553 ± 0.05
1.102HisLys: 1.102 ± 0.042
1.176HisLeu: 1.176 ± 0.044
0.351HisMet: 0.351 ± 0.023
0.813HisAsn: 0.813 ± 0.036
0.555HisPro: 0.555 ± 0.028
0.39HisGln: 0.39 ± 0.023
0.453HisArg: 0.453 ± 0.024
0.898HisSer: 0.898 ± 0.035
0.733HisThr: 0.733 ± 0.031
0.568HisVal: 0.568 ± 0.027
0.092HisTrp: 0.092 ± 0.011
0.602HisTyr: 0.602 ± 0.027
0.0HisXaa: 0.0 ± 0.0
Ile
5.904IleAla: 5.904 ± 0.111
1.034IleCys: 1.034 ± 0.045
6.556IleAsp: 6.556 ± 0.105
6.922IleGlu: 6.922 ± 0.113
4.342IlePhe: 4.342 ± 0.109
5.79IleGly: 5.79 ± 0.112
1.206IleHis: 1.206 ± 0.044
8.879IleIle: 8.879 ± 0.153
9.086IleLys: 9.086 ± 0.115
8.439IleLeu: 8.439 ± 0.151
2.474IleMet: 2.474 ± 0.065
5.962IleAsn: 5.962 ± 0.099
3.121IlePro: 3.121 ± 0.066
2.66IleGln: 2.66 ± 0.061
3.211IleArg: 3.211 ± 0.079
7.562IleSer: 7.562 ± 0.107
5.121IleThr: 5.121 ± 0.1
5.75IleVal: 5.75 ± 0.104
0.441IleTrp: 0.441 ± 0.024
3.897IleTyr: 3.897 ± 0.081
0.0IleXaa: 0.0 ± 0.0
Lys
5.003LysAla: 5.003 ± 0.099
0.689LysCys: 0.689 ± 0.037
6.443LysAsp: 6.443 ± 0.106
8.471LysGlu: 8.471 ± 0.139
3.218LysPhe: 3.218 ± 0.061
4.456LysGly: 4.456 ± 0.084
1.117LysHis: 1.117 ± 0.042
9.284LysIle: 9.284 ± 0.132
9.705LysLys: 9.705 ± 0.126
7.846LysLeu: 7.846 ± 0.119
2.618LysMet: 2.618 ± 0.054
7.617LysAsn: 7.617 ± 0.105
2.152LysPro: 2.152 ± 0.066
3.071LysGln: 3.071 ± 0.071
3.075LysArg: 3.075 ± 0.07
5.872LysSer: 5.872 ± 0.101
5.074LysThr: 5.074 ± 0.086
5.127LysVal: 5.127 ± 0.093
0.515LysTrp: 0.515 ± 0.029
4.377LysTyr: 4.377 ± 0.092
0.0LysXaa: 0.0 ± 0.0
Leu
4.706LeuAla: 4.706 ± 0.097
0.952LeuCys: 0.952 ± 0.038
5.283LeuAsp: 5.283 ± 0.095
6.223LeuGlu: 6.223 ± 0.109
3.57LeuPhe: 3.57 ± 0.093
5.016LeuGly: 5.016 ± 0.108
1.029LeuHis: 1.029 ± 0.046
7.518LeuIle: 7.518 ± 0.141
8.628LeuLys: 8.628 ± 0.139
7.058LeuLeu: 7.058 ± 0.142
2.128LeuMet: 2.128 ± 0.063
4.938LeuAsn: 4.938 ± 0.097
2.74LeuPro: 2.74 ± 0.073
2.597LeuGln: 2.597 ± 0.064
2.928LeuArg: 2.928 ± 0.072
7.078LeuSer: 7.078 ± 0.107
4.387LeuThr: 4.387 ± 0.085
4.37LeuVal: 4.37 ± 0.09
0.405LeuTrp: 0.405 ± 0.024
3.189LeuTyr: 3.189 ± 0.078
0.0LeuXaa: 0.0 ± 0.0
Met
1.812MetAla: 1.812 ± 0.057
0.279MetCys: 0.279 ± 0.023
1.624MetAsp: 1.624 ± 0.046
1.792MetGlu: 1.792 ± 0.049
1.077MetPhe: 1.077 ± 0.042
1.707MetGly: 1.707 ± 0.051
0.307MetHis: 0.307 ± 0.023
2.458MetIle: 2.458 ± 0.07
2.624MetLys: 2.624 ± 0.07
2.554MetLeu: 2.554 ± 0.063
0.78MetMet: 0.78 ± 0.036
1.757MetAsn: 1.757 ± 0.048
0.993MetPro: 0.993 ± 0.04
1.129MetGln: 1.129 ± 0.037
0.901MetArg: 0.901 ± 0.034
2.063MetSer: 2.063 ± 0.054
1.31MetThr: 1.31 ± 0.045
1.412MetVal: 1.412 ± 0.041
0.149MetTrp: 0.149 ± 0.015
1.038MetTyr: 1.038 ± 0.04
0.0MetXaa: 0.0 ± 0.0
Asn
3.473AsnAla: 3.473 ± 0.071
0.639AsnCys: 0.639 ± 0.032
3.148AsnAsp: 3.148 ± 0.07
4.155AsnGlu: 4.155 ± 0.094
2.693AsnPhe: 2.693 ± 0.063
3.468AsnGly: 3.468 ± 0.077
0.836AsnHis: 0.836 ± 0.035
7.545AsnIle: 7.545 ± 0.143
5.529AsnLys: 5.529 ± 0.089
5.414AsnLeu: 5.414 ± 0.091
1.88AsnMet: 1.88 ± 0.057
3.938AsnAsn: 3.938 ± 0.111
2.091AsnPro: 2.091 ± 0.056
1.583AsnGln: 1.583 ± 0.044
1.832AsnArg: 1.832 ± 0.048
4.029AsnSer: 4.029 ± 0.093
3.3AsnThr: 3.3 ± 0.083
3.625AsnVal: 3.625 ± 0.069
0.389AsnTrp: 0.389 ± 0.026
2.736AsnTyr: 2.736 ± 0.071
0.0AsnXaa: 0.0 ± 0.0
Pro
1.422ProAla: 1.422 ± 0.049
0.293ProCys: 0.293 ± 0.019
1.689ProAsp: 1.689 ± 0.053
1.905ProGlu: 1.905 ± 0.061
1.338ProPhe: 1.338 ± 0.043
1.273ProGly: 1.273 ± 0.051
0.435ProHis: 0.435 ± 0.026
2.571ProIle: 2.571 ± 0.06
2.356ProLys: 2.356 ± 0.059
2.145ProLeu: 2.145 ± 0.056
0.727ProMet: 0.727 ± 0.035
1.574ProAsn: 1.574 ± 0.05
0.69ProPro: 0.69 ± 0.044
0.995ProGln: 0.995 ± 0.04
0.727ProArg: 0.727 ± 0.036
1.739ProSer: 1.739 ± 0.052
1.555ProThr: 1.555 ± 0.059
1.913ProVal: 1.913 ± 0.053
0.147ProTrp: 0.147 ± 0.015
1.313ProTyr: 1.313 ± 0.042
0.0ProXaa: 0.0 ± 0.0
Gln
1.651GlnAla: 1.651 ± 0.047
0.168GlnCys: 0.168 ± 0.015
1.86GlnAsp: 1.86 ± 0.052
2.335GlnGlu: 2.335 ± 0.067
0.944GlnPhe: 0.944 ± 0.039
1.696GlnGly: 1.696 ± 0.051
0.298GlnHis: 0.298 ± 0.022
2.861GlnIle: 2.861 ± 0.07
3.232GlnLys: 3.232 ± 0.076
2.307GlnLeu: 2.307 ± 0.056
0.9GlnMet: 0.9 ± 0.036
2.111GlnAsn: 2.111 ± 0.057
0.555GlnPro: 0.555 ± 0.029
0.7GlnGln: 0.7 ± 0.04
1.142GlnArg: 1.142 ± 0.038
1.664GlnSer: 1.664 ± 0.048
1.441GlnThr: 1.441 ± 0.046
1.573GlnVal: 1.573 ± 0.053
0.19GlnTrp: 0.19 ± 0.02
1.12GlnTyr: 1.12 ± 0.042
0.0GlnXaa: 0.0 ± 0.0
Arg
1.934ArgAla: 1.934 ± 0.05
0.38ArgCys: 0.38 ± 0.023
1.984ArgAsp: 1.984 ± 0.054
2.585ArgGlu: 2.585 ± 0.069
1.409ArgPhe: 1.409 ± 0.046
1.844ArgGly: 1.844 ± 0.06
0.508ArgHis: 0.508 ± 0.027
2.871ArgIle: 2.871 ± 0.067
3.232ArgLys: 3.232 ± 0.072
3.071ArgLeu: 3.071 ± 0.066
0.902ArgMet: 0.902 ± 0.038
1.852ArgAsn: 1.852 ± 0.059
0.894ArgPro: 0.894 ± 0.036
1.167ArgGln: 1.167 ± 0.04
1.353ArgArg: 1.353 ± 0.049
1.535ArgSer: 1.535 ± 0.046
1.571ArgThr: 1.571 ± 0.05
1.943ArgVal: 1.943 ± 0.052
0.207ArgTrp: 0.207 ± 0.017
1.606ArgTyr: 1.606 ± 0.058
0.0ArgXaa: 0.0 ± 0.0
Ser
3.687SerAla: 3.687 ± 0.083
0.6SerCys: 0.6 ± 0.032
4.044SerAsp: 4.044 ± 0.079
4.217SerGlu: 4.217 ± 0.098
2.982SerPhe: 2.982 ± 0.059
4.256SerGly: 4.256 ± 0.089
0.904SerHis: 0.904 ± 0.039
6.513SerIle: 6.513 ± 0.121
5.979SerLys: 5.979 ± 0.092
5.637SerLeu: 5.637 ± 0.095
1.882SerMet: 1.882 ± 0.056
3.719SerAsn: 3.719 ± 0.083
1.612SerPro: 1.612 ± 0.051
2.131SerGln: 2.131 ± 0.057
2.086SerArg: 2.086 ± 0.057
4.469SerSer: 4.469 ± 0.102
3.079SerThr: 3.079 ± 0.071
4.165SerVal: 4.165 ± 0.087
0.4SerTrp: 0.4 ± 0.023
2.824SerTyr: 2.824 ± 0.073
0.0SerXaa: 0.0 ± 0.0
Thr
3.326ThrAla: 3.326 ± 0.095
0.439ThrCys: 0.439 ± 0.029
3.253ThrAsp: 3.253 ± 0.073
2.796ThrGlu: 2.796 ± 0.077
2.189ThrPhe: 2.189 ± 0.049
3.544ThrGly: 3.544 ± 0.079
0.823ThrHis: 0.823 ± 0.033
4.53ThrIle: 4.53 ± 0.085
4.227ThrLys: 4.227 ± 0.084
4.696ThrLeu: 4.696 ± 0.089
1.216ThrMet: 1.216 ± 0.041
2.761ThrAsn: 2.761 ± 0.074
1.871ThrPro: 1.871 ± 0.067
1.56ThrGln: 1.56 ± 0.047
1.612ThrArg: 1.612 ± 0.045
3.479ThrSer: 3.479 ± 0.07
2.833ThrThr: 2.833 ± 0.085
3.737ThrVal: 3.737 ± 0.078
0.258ThrTrp: 0.258 ± 0.021
2.003ThrTyr: 2.003 ± 0.054
0.0ThrXaa: 0.0 ± 0.0
Val
3.54ValAla: 3.54 ± 0.08
0.804ValCys: 0.804 ± 0.03
3.966ValAsp: 3.966 ± 0.093
4.184ValGlu: 4.184 ± 0.087
2.779ValPhe: 2.779 ± 0.072
3.713ValGly: 3.713 ± 0.093
0.794ValHis: 0.794 ± 0.034
5.604ValIle: 5.604 ± 0.107
5.443ValLys: 5.443 ± 0.102
5.26ValLeu: 5.26 ± 0.102
1.56ValMet: 1.56 ± 0.042
3.364ValAsn: 3.364 ± 0.077
1.832ValPro: 1.832 ± 0.052
1.735ValGln: 1.735 ± 0.048
2.06ValArg: 2.06 ± 0.063
4.256ValSer: 4.256 ± 0.083
2.944ValThr: 2.944 ± 0.071
3.923ValVal: 3.923 ± 0.091
0.315ValTrp: 0.315 ± 0.022
2.375ValTyr: 2.375 ± 0.06
0.0ValXaa: 0.0 ± 0.0
Trp
0.353TrpAla: 0.353 ± 0.023
0.086TrpCys: 0.086 ± 0.012
0.34TrpAsp: 0.34 ± 0.019
0.366TrpGlu: 0.366 ± 0.025
0.24TrpPhe: 0.24 ± 0.02
0.418TrpGly: 0.418 ± 0.027
0.125TrpHis: 0.125 ± 0.013
0.5TrpIle: 0.5 ± 0.026
0.487TrpLys: 0.487 ± 0.022
0.418TrpLeu: 0.418 ± 0.027
0.125TrpMet: 0.125 ± 0.015
0.379TrpAsn: 0.379 ± 0.022
0.089TrpPro: 0.089 ± 0.011
0.226TrpGln: 0.226 ± 0.018
0.207TrpArg: 0.207 ± 0.016
0.312TrpSer: 0.312 ± 0.02
0.269TrpThr: 0.269 ± 0.022
0.282TrpVal: 0.282 ± 0.021
0.044TrpTrp: 0.044 ± 0.007
0.265TrpTyr: 0.265 ± 0.02
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.242TyrAla: 2.242 ± 0.054
0.528TyrCys: 0.528 ± 0.031
3.221TyrAsp: 3.221 ± 0.074
3.315TyrGlu: 3.315 ± 0.079
2.071TyrPhe: 2.071 ± 0.06
2.529TyrGly: 2.529 ± 0.059
0.611TyrHis: 0.611 ± 0.032
4.199TyrIle: 4.199 ± 0.093
3.947TyrLys: 3.947 ± 0.071
3.325TyrLeu: 3.325 ± 0.072
1.148TyrMet: 1.148 ± 0.046
2.583TyrAsn: 2.583 ± 0.064
1.205TyrPro: 1.205 ± 0.044
1.07TyrGln: 1.07 ± 0.041
1.406TyrArg: 1.406 ± 0.05
2.893TyrSer: 2.893 ± 0.07
2.257TyrThr: 2.257 ± 0.06
2.439TyrVal: 2.439 ± 0.06
0.261TyrTrp: 0.261 ± 0.018
1.97TyrTyr: 1.97 ± 0.072
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 2275 proteins (720360 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