Amino acid dipepetide frequency for Streptococcus gordonii (strain Challis / ATCC 35105 / BCRC 15272 / CH1 / DL1 / V288)

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
5.911AlaAla: 5.911 ± 0.149
0.506AlaCys: 0.506 ± 0.028
4.379AlaAsp: 4.379 ± 0.087
5.383AlaGlu: 5.383 ± 0.121
3.482AlaPhe: 3.482 ± 0.089
5.595AlaGly: 5.595 ± 0.118
1.297AlaHis: 1.297 ± 0.049
5.464AlaIle: 5.464 ± 0.126
5.266AlaLys: 5.266 ± 0.109
7.667AlaLeu: 7.667 ± 0.132
1.811AlaMet: 1.811 ± 0.053
3.125AlaAsn: 3.125 ± 0.085
2.287AlaPro: 2.287 ± 0.079
3.167AlaGln: 3.167 ± 0.095
2.892AlaArg: 2.892 ± 0.076
5.358AlaSer: 5.358 ± 0.507
4.192AlaThr: 4.192 ± 0.109
5.437AlaVal: 5.437 ± 0.112
0.656AlaTrp: 0.656 ± 0.03
2.806AlaTyr: 2.806 ± 0.071
0.0AlaXaa: 0.0 ± 0.0
Cys
0.319CysAla: 0.319 ± 0.02
0.053CysCys: 0.053 ± 0.008
0.299CysAsp: 0.299 ± 0.023
0.249CysGlu: 0.249 ± 0.019
0.272CysPhe: 0.272 ± 0.023
0.486CysGly: 0.486 ± 0.029
0.168CysHis: 0.168 ± 0.017
0.318CysIle: 0.318 ± 0.023
0.234CysLys: 0.234 ± 0.019
0.637CysLeu: 0.637 ± 0.032
0.115CysMet: 0.115 ± 0.011
0.187CysAsn: 0.187 ± 0.018
0.213CysPro: 0.213 ± 0.018
0.299CysGln: 0.299 ± 0.025
0.238CysArg: 0.238 ± 0.019
0.361CysSer: 0.361 ± 0.024
0.235CysThr: 0.235 ± 0.02
0.327CysVal: 0.327 ± 0.025
0.042CysTrp: 0.042 ± 0.009
0.206CysTyr: 0.206 ± 0.019
0.0CysXaa: 0.0 ± 0.0
Asp
3.651AspAla: 3.651 ± 0.085
0.321AspCys: 0.321 ± 0.025
2.747AspAsp: 2.747 ± 0.078
4.181AspGlu: 4.181 ± 0.097
3.348AspPhe: 3.348 ± 0.086
3.952AspGly: 3.952 ± 0.109
0.992AspHis: 0.992 ± 0.041
4.0AspIle: 4.0 ± 0.087
4.422AspLys: 4.422 ± 0.091
6.211AspLeu: 6.211 ± 0.103
1.361AspMet: 1.361 ± 0.053
2.236AspAsn: 2.236 ± 0.062
1.809AspPro: 1.809 ± 0.079
2.367AspGln: 2.367 ± 0.072
2.046AspArg: 2.046 ± 0.048
3.072AspSer: 3.072 ± 0.081
2.54AspThr: 2.54 ± 0.059
3.631AspVal: 3.631 ± 0.081
0.691AspTrp: 0.691 ± 0.036
2.884AspTyr: 2.884 ± 0.07
0.0AspXaa: 0.0 ± 0.0
Glu
5.682GluAla: 5.682 ± 0.118
0.272GluCys: 0.272 ± 0.02
3.844GluAsp: 3.844 ± 0.079
6.602GluGlu: 6.602 ± 0.14
2.761GluPhe: 2.761 ± 0.092
3.883GluGly: 3.883 ± 0.094
1.252GluHis: 1.252 ± 0.043
5.38GluIle: 5.38 ± 0.113
6.376GluLys: 6.376 ± 0.124
7.146GluLeu: 7.146 ± 0.151
1.788GluMet: 1.788 ± 0.059
4.034GluAsn: 4.034 ± 0.074
1.693GluPro: 1.693 ± 0.061
2.941GluGln: 2.941 ± 0.075
3.32GluArg: 3.32 ± 0.084
3.64GluSer: 3.64 ± 0.164
3.79GluThr: 3.79 ± 0.089
4.899GluVal: 4.899 ± 0.1
0.596GluTrp: 0.596 ± 0.029
2.063GluTyr: 2.063 ± 0.068
0.0GluXaa: 0.0 ± 0.0
Phe
3.287PheAla: 3.287 ± 0.074
0.291PheCys: 0.291 ± 0.021
3.005PheAsp: 3.005 ± 0.08
3.035PheGlu: 3.035 ± 0.079
2.357PhePhe: 2.357 ± 0.074
3.242PheGly: 3.242 ± 0.087
0.864PheHis: 0.864 ± 0.037
3.25PheIle: 3.25 ± 0.094
2.588PheLys: 2.588 ± 0.07
4.899PheLeu: 4.899 ± 0.135
1.053PheMet: 1.053 ± 0.043
1.926PheAsn: 1.926 ± 0.057
1.537PhePro: 1.537 ± 0.05
1.703PheGln: 1.703 ± 0.057
1.573PheArg: 1.573 ± 0.055
3.483PheSer: 3.483 ± 0.081
2.498PheThr: 2.498 ± 0.087
3.175PheVal: 3.175 ± 0.089
0.509PheTrp: 0.509 ± 0.031
1.929PheTyr: 1.929 ± 0.063
0.0PheXaa: 0.0 ± 0.0
Gly
4.698GlyAla: 4.698 ± 0.101
0.413GlyCys: 0.413 ± 0.029
3.352GlyAsp: 3.352 ± 0.074
3.773GlyGlu: 3.773 ± 0.084
3.267GlyPhe: 3.267 ± 0.068
4.293GlyGly: 4.293 ± 0.11
1.247GlyHis: 1.247 ± 0.049
4.995GlyIle: 4.995 ± 0.102
4.762GlyLys: 4.762 ± 0.102
6.928GlyLeu: 6.928 ± 0.111
1.68GlyMet: 1.68 ± 0.051
2.739GlyAsn: 2.739 ± 0.07
1.501GlyPro: 1.501 ± 0.055
3.466GlyGln: 3.466 ± 0.091
2.744GlyArg: 2.744 ± 0.07
3.901GlySer: 3.901 ± 0.083
3.868GlyThr: 3.868 ± 0.173
4.755GlyVal: 4.755 ± 0.11
0.67GlyTrp: 0.67 ± 0.039
2.591GlyTyr: 2.591 ± 0.069
0.0GlyXaa: 0.0 ± 0.0
His
1.151HisAla: 1.151 ± 0.049
0.104HisCys: 0.104 ± 0.013
0.973HisAsp: 0.973 ± 0.042
1.163HisGlu: 1.163 ± 0.053
1.093HisPhe: 1.093 ± 0.044
1.289HisGly: 1.289 ± 0.049
0.49HisHis: 0.49 ± 0.028
1.207HisIle: 1.207 ± 0.052
0.981HisLys: 0.981 ± 0.044
2.03HisLeu: 2.03 ± 0.062
0.414HisMet: 0.414 ± 0.023
0.662HisAsn: 0.662 ± 0.032
0.919HisPro: 0.919 ± 0.042
0.894HisGln: 0.894 ± 0.041
0.835HisArg: 0.835 ± 0.042
1.037HisSer: 1.037 ± 0.044
0.889HisThr: 0.889 ± 0.042
1.09HisVal: 1.09 ± 0.042
0.17HisTrp: 0.17 ± 0.015
0.906HisTyr: 0.906 ± 0.038
0.0HisXaa: 0.0 ± 0.0
Ile
5.814IleAla: 5.814 ± 0.093
0.534IleCys: 0.534 ± 0.034
3.997IleAsp: 3.997 ± 0.093
4.92IleGlu: 4.92 ± 0.111
3.5IlePhe: 3.5 ± 0.101
4.639IleGly: 4.639 ± 0.101
1.271IleHis: 1.271 ± 0.05
4.799IleIle: 4.799 ± 0.12
4.347IleLys: 4.347 ± 0.08
7.582IleLeu: 7.582 ± 0.165
1.557IleMet: 1.557 ± 0.072
2.892IleAsn: 2.892 ± 0.075
2.797IlePro: 2.797 ± 0.072
2.737IleGln: 2.737 ± 0.073
2.806IleArg: 2.806 ± 0.068
4.927IleSer: 4.927 ± 0.102
3.535IleThr: 3.535 ± 0.084
4.628IleVal: 4.628 ± 0.107
0.642IleTrp: 0.642 ± 0.036
2.747IleTyr: 2.747 ± 0.068
0.0IleXaa: 0.0 ± 0.0
Lys
5.182LysAla: 5.182 ± 0.127
0.151LysCys: 0.151 ± 0.013
4.203LysAsp: 4.203 ± 0.098
6.495LysGlu: 6.495 ± 0.125
2.255LysPhe: 2.255 ± 0.06
3.966LysGly: 3.966 ± 0.086
1.079LysHis: 1.079 ± 0.044
4.987LysIle: 4.987 ± 0.097
5.783LysLys: 5.783 ± 0.114
5.887LysLeu: 5.887 ± 0.109
2.006LysMet: 2.006 ± 0.059
3.549LysAsn: 3.549 ± 0.072
2.15LysPro: 2.15 ± 0.083
2.574LysGln: 2.574 ± 0.077
2.999LysArg: 2.999 ± 0.076
3.919LysSer: 3.919 ± 0.085
3.894LysThr: 3.894 ± 0.096
4.604LysVal: 4.604 ± 0.11
0.677LysTrp: 0.677 ± 0.034
2.315LysTyr: 2.315 ± 0.065
0.0LysXaa: 0.0 ± 0.0
Leu
9.159LeuAla: 9.159 ± 0.149
0.55LeuCys: 0.55 ± 0.036
5.984LeuAsp: 5.984 ± 0.116
7.247LeuGlu: 7.247 ± 0.152
4.579LeuPhe: 4.579 ± 0.126
6.481LeuGly: 6.481 ± 0.14
1.665LeuHis: 1.665 ± 0.058
6.744LeuIle: 6.744 ± 0.16
6.369LeuLys: 6.369 ± 0.111
10.721LeuLeu: 10.721 ± 0.225
2.264LeuMet: 2.264 ± 0.063
4.078LeuAsn: 4.078 ± 0.069
4.282LeuPro: 4.282 ± 0.091
3.584LeuGln: 3.584 ± 0.09
3.801LeuArg: 3.801 ± 0.089
7.367LeuSer: 7.367 ± 0.12
6.378LeuThr: 6.378 ± 0.098
6.977LeuVal: 6.977 ± 0.118
0.677LeuTrp: 0.677 ± 0.031
3.323LeuTyr: 3.323 ± 0.085
0.0LeuXaa: 0.0 ± 0.0
Met
1.923MetAla: 1.923 ± 0.058
0.107MetCys: 0.107 ± 0.011
1.285MetAsp: 1.285 ± 0.052
1.524MetGlu: 1.524 ± 0.061
0.769MetPhe: 0.769 ± 0.038
1.546MetGly: 1.546 ± 0.052
0.324MetHis: 0.324 ± 0.017
1.817MetIle: 1.817 ± 0.06
2.06MetLys: 2.06 ± 0.062
2.211MetLeu: 2.211 ± 0.069
0.651MetMet: 0.651 ± 0.033
1.16MetAsn: 1.16 ± 0.048
0.749MetPro: 0.749 ± 0.032
0.869MetGln: 0.869 ± 0.039
0.997MetArg: 0.997 ± 0.038
1.538MetSer: 1.538 ± 0.053
1.781MetThr: 1.781 ± 0.045
1.537MetVal: 1.537 ± 0.054
0.149MetTrp: 0.149 ± 0.016
0.564MetTyr: 0.564 ± 0.032
0.0MetXaa: 0.0 ± 0.0
Asn
2.811AsnAla: 2.811 ± 0.082
0.244AsnCys: 0.244 ± 0.021
2.197AsnAsp: 2.197 ± 0.064
2.466AsnGlu: 2.466 ± 0.068
2.048AsnPhe: 2.048 ± 0.056
3.412AsnGly: 3.412 ± 0.109
0.995AsnHis: 0.995 ± 0.038
3.097AsnIle: 3.097 ± 0.079
2.725AsnLys: 2.725 ± 0.08
4.565AsnLeu: 4.565 ± 0.089
1.062AsnMet: 1.062 ± 0.035
1.84AsnAsn: 1.84 ± 0.074
2.323AsnPro: 2.323 ± 0.072
2.365AsnGln: 2.365 ± 0.066
1.979AsnArg: 1.979 ± 0.051
2.547AsnSer: 2.547 ± 0.077
1.999AsnThr: 1.999 ± 0.062
2.627AsnVal: 2.627 ± 0.069
0.455AsnTrp: 0.455 ± 0.031
1.803AsnTyr: 1.803 ± 0.059
0.0AsnXaa: 0.0 ± 0.0
Pro
2.759ProAla: 2.759 ± 0.092
0.14ProCys: 0.14 ± 0.014
2.343ProAsp: 2.343 ± 0.086
2.976ProGlu: 2.976 ± 0.097
1.615ProPhe: 1.615 ± 0.063
1.981ProGly: 1.981 ± 0.067
0.71ProHis: 0.71 ± 0.037
2.37ProIle: 2.37 ± 0.059
2.135ProLys: 2.135 ± 0.067
3.119ProLeu: 3.119 ± 0.073
0.694ProMet: 0.694 ± 0.036
1.602ProAsn: 1.602 ± 0.066
0.657ProPro: 0.657 ± 0.06
1.417ProGln: 1.417 ± 0.072
0.969ProArg: 0.969 ± 0.043
2.248ProSer: 2.248 ± 0.07
2.155ProThr: 2.155 ± 0.113
2.739ProVal: 2.739 ± 0.086
0.316ProTrp: 0.316 ± 0.021
1.291ProTyr: 1.291 ± 0.039
0.0ProXaa: 0.0 ± 0.0
Gln
3.939GlnAla: 3.939 ± 0.128
0.093GlnCys: 0.093 ± 0.012
2.287GlnAsp: 2.287 ± 0.057
3.704GlnGlu: 3.704 ± 0.102
1.594GlnPhe: 1.594 ± 0.058
2.591GlnGly: 2.591 ± 0.08
0.769GlnHis: 0.769 ± 0.036
2.982GlnIle: 2.982 ± 0.069
3.021GlnLys: 3.021 ± 0.076
4.24GlnLeu: 4.24 ± 0.107
0.987GlnMet: 0.987 ± 0.046
1.783GlnAsn: 1.783 ± 0.06
1.372GlnPro: 1.372 ± 0.057
1.59GlnGln: 1.59 ± 0.069
1.414GlnArg: 1.414 ± 0.045
2.178GlnSer: 2.178 ± 0.061
2.351GlnThr: 2.351 ± 0.081
3.421GlnVal: 3.421 ± 0.082
0.279GlnTrp: 0.279 ± 0.02
1.42GlnTyr: 1.42 ± 0.051
0.0GlnXaa: 0.0 ± 0.0
Arg
2.535ArgAla: 2.535 ± 0.066
0.167ArgCys: 0.167 ± 0.017
2.266ArgAsp: 2.266 ± 0.064
3.057ArgGlu: 3.057 ± 0.078
1.968ArgPhe: 1.968 ± 0.061
2.166ArgGly: 2.166 ± 0.065
0.754ArgHis: 0.754 ± 0.036
2.937ArgIle: 2.937 ± 0.073
2.896ArgLys: 2.896 ± 0.071
4.189ArgLeu: 4.189 ± 0.096
1.031ArgMet: 1.031 ± 0.041
1.783ArgAsn: 1.783 ± 0.056
1.31ArgPro: 1.31 ± 0.051
1.867ArgGln: 1.867 ± 0.065
1.934ArgArg: 1.934 ± 0.066
2.102ArgSer: 2.102 ± 0.061
1.92ArgThr: 1.92 ± 0.058
2.851ArgVal: 2.851 ± 0.082
0.338ArgTrp: 0.338 ± 0.026
1.612ArgTyr: 1.612 ± 0.057
0.0ArgXaa: 0.0 ± 0.0
Ser
4.592SerAla: 4.592 ± 0.519
0.318SerCys: 0.318 ± 0.024
3.433SerAsp: 3.433 ± 0.082
3.885SerGlu: 3.885 ± 0.172
3.039SerPhe: 3.039 ± 0.079
4.447SerGly: 4.447 ± 0.095
1.292SerHis: 1.292 ± 0.046
4.343SerIle: 4.343 ± 0.086
4.128SerLys: 4.128 ± 0.081
6.867SerLeu: 6.867 ± 0.133
1.437SerMet: 1.437 ± 0.048
2.717SerAsn: 2.717 ± 0.076
2.021SerPro: 2.021 ± 0.061
3.233SerGln: 3.233 ± 0.083
2.516SerArg: 2.516 ± 0.075
4.628SerSer: 4.628 ± 0.14
3.373SerThr: 3.373 ± 0.238
4.173SerVal: 4.173 ± 0.202
0.642SerTrp: 0.642 ± 0.032
2.691SerTyr: 2.691 ± 0.072
0.0SerXaa: 0.0 ± 0.0
Thr
4.394ThrAla: 4.394 ± 0.11
0.316ThrCys: 0.316 ± 0.027
3.189ThrAsp: 3.189 ± 0.087
3.443ThrGlu: 3.443 ± 0.081
2.642ThrPhe: 2.642 ± 0.109
4.143ThrGly: 4.143 ± 0.109
0.942ThrHis: 0.942 ± 0.044
4.304ThrIle: 4.304 ± 0.085
3.192ThrLys: 3.192 ± 0.085
5.149ThrLeu: 5.149 ± 0.095
1.126ThrMet: 1.126 ± 0.035
2.315ThrAsn: 2.315 ± 0.08
2.502ThrPro: 2.502 ± 0.176
1.756ThrGln: 1.756 ± 0.061
1.903ThrArg: 1.903 ± 0.063
3.869ThrSer: 3.869 ± 0.227
2.929ThrThr: 2.929 ± 0.083
4.383ThrVal: 4.383 ± 0.153
0.529ThrTrp: 0.529 ± 0.045
2.298ThrTyr: 2.298 ± 0.088
0.0ThrXaa: 0.0 ± 0.0
Val
5.803ValAla: 5.803 ± 0.119
0.406ValCys: 0.406 ± 0.026
3.946ValAsp: 3.946 ± 0.089
4.897ValGlu: 4.897 ± 0.11
3.078ValPhe: 3.078 ± 0.079
4.439ValGly: 4.439 ± 0.092
1.162ValHis: 1.162 ± 0.051
4.597ValIle: 4.597 ± 0.1
4.625ValLys: 4.625 ± 0.093
6.906ValLeu: 6.906 ± 0.13
1.499ValMet: 1.499 ± 0.051
2.89ValAsn: 2.89 ± 0.078
2.477ValPro: 2.477 ± 0.093
2.347ValGln: 2.347 ± 0.065
2.642ValArg: 2.642 ± 0.08
4.737ValSer: 4.737 ± 0.183
4.548ValThr: 4.548 ± 0.189
4.822ValVal: 4.822 ± 0.095
0.543ValTrp: 0.543 ± 0.032
2.381ValTyr: 2.381 ± 0.065
0.0ValXaa: 0.0 ± 0.0
Trp
0.54TrpAla: 0.54 ± 0.029
0.051TrpCys: 0.051 ± 0.01
0.452TrpAsp: 0.452 ± 0.027
0.565TrpGlu: 0.565 ± 0.04
0.428TrpPhe: 0.428 ± 0.028
0.607TrpGly: 0.607 ± 0.034
0.207TrpHis: 0.207 ± 0.019
0.663TrpIle: 0.663 ± 0.034
0.571TrpLys: 0.571 ± 0.035
1.074TrpLeu: 1.074 ± 0.041
0.232TrpMet: 0.232 ± 0.019
0.447TrpAsn: 0.447 ± 0.026
0.19TrpPro: 0.19 ± 0.018
0.511TrpGln: 0.511 ± 0.031
0.353TrpArg: 0.353 ± 0.023
0.615TrpSer: 0.615 ± 0.04
0.503TrpThr: 0.503 ± 0.031
0.495TrpVal: 0.495 ± 0.03
0.12TrpTrp: 0.12 ± 0.014
0.42TrpTyr: 0.42 ± 0.033
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.529TyrAla: 2.529 ± 0.059
0.22TyrCys: 0.22 ± 0.02
2.281TyrAsp: 2.281 ± 0.063
2.398TyrGlu: 2.398 ± 0.068
2.107TyrPhe: 2.107 ± 0.069
2.484TyrGly: 2.484 ± 0.076
0.817TyrHis: 0.817 ± 0.034
2.417TyrIle: 2.417 ± 0.065
2.197TyrLys: 2.197 ± 0.064
4.201TyrLeu: 4.201 ± 0.086
0.793TyrMet: 0.793 ± 0.037
1.596TyrAsn: 1.596 ± 0.058
1.447TyrPro: 1.447 ± 0.05
2.329TyrGln: 2.329 ± 0.064
1.721TyrArg: 1.721 ± 0.047
2.245TyrSer: 2.245 ± 0.057
1.949TyrThr: 1.949 ± 0.074
2.174TyrVal: 2.174 ± 0.061
0.346TyrTrp: 0.346 ± 0.026
1.724TyrTyr: 1.724 ± 0.073
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 2050 proteins (642221 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