Amino acid dipepetide frequency for Eubacterium sp. CAG:38

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
8.643AlaAla: 8.643 ± 0.147
1.131AlaCys: 1.131 ± 0.04
5.053AlaAsp: 5.053 ± 0.087
5.577AlaGlu: 5.577 ± 0.107
3.043AlaPhe: 3.043 ± 0.071
6.771AlaGly: 6.771 ± 0.101
1.162AlaHis: 1.162 ± 0.042
4.608AlaIle: 4.608 ± 0.092
5.41AlaLys: 5.41 ± 0.094
6.871AlaLeu: 6.871 ± 0.11
2.374AlaMet: 2.374 ± 0.058
2.754AlaAsn: 2.754 ± 0.063
1.887AlaPro: 1.887 ± 0.051
3.205AlaGln: 3.205 ± 0.071
2.576AlaArg: 2.576 ± 0.061
3.826AlaSer: 3.826 ± 0.078
3.262AlaThr: 3.262 ± 0.085
7.683AlaVal: 7.683 ± 0.112
0.558AlaTrp: 0.558 ± 0.028
3.18AlaTyr: 3.18 ± 0.069
0.0AlaXaa: 0.0 ± 0.0
Cys
1.128CysAla: 1.128 ± 0.041
0.284CysCys: 0.284 ± 0.022
0.831CysAsp: 0.831 ± 0.037
0.95CysGlu: 0.95 ± 0.035
0.597CysPhe: 0.597 ± 0.03
1.41CysGly: 1.41 ± 0.049
0.321CysHis: 0.321 ± 0.019
1.288CysIle: 1.288 ± 0.043
0.805CysLys: 0.805 ± 0.034
1.054CysLeu: 1.054 ± 0.042
0.501CysMet: 0.501 ± 0.026
0.695CysAsn: 0.695 ± 0.034
0.538CysPro: 0.538 ± 0.03
0.367CysGln: 0.367 ± 0.023
0.648CysArg: 0.648 ± 0.028
0.817CysSer: 0.817 ± 0.032
0.888CysThr: 0.888 ± 0.033
1.133CysVal: 1.133 ± 0.039
0.108CysTrp: 0.108 ± 0.011
0.62CysTyr: 0.62 ± 0.03
0.0CysXaa: 0.0 ± 0.0
Asp
4.045AspAla: 4.045 ± 0.076
0.953AspCys: 0.953 ± 0.034
2.993AspAsp: 2.993 ± 0.076
4.627AspGlu: 4.627 ± 0.085
2.597AspPhe: 2.597 ± 0.063
4.339AspGly: 4.339 ± 0.095
0.695AspHis: 0.695 ± 0.029
4.994AspIle: 4.994 ± 0.09
4.023AspLys: 4.023 ± 0.081
3.941AspLeu: 3.941 ± 0.077
1.978AspMet: 1.978 ± 0.054
2.616AspAsn: 2.616 ± 0.063
1.153AspPro: 1.153 ± 0.04
0.815AspGln: 0.815 ± 0.033
2.112AspArg: 2.112 ± 0.055
3.405AspSer: 3.405 ± 0.075
3.956AspThr: 3.956 ± 0.072
3.958AspVal: 3.958 ± 0.067
0.493AspTrp: 0.493 ± 0.031
2.978AspTyr: 2.978 ± 0.06
0.0AspXaa: 0.0 ± 0.0
Glu
5.753GluAla: 5.753 ± 0.109
0.831GluCys: 0.831 ± 0.035
3.923GluAsp: 3.923 ± 0.082
6.169GluGlu: 6.169 ± 0.132
2.385GluPhe: 2.385 ± 0.058
3.796GluGly: 3.796 ± 0.074
1.343GluHis: 1.343 ± 0.041
5.174GluIle: 5.174 ± 0.1
6.785GluLys: 6.785 ± 0.117
6.438GluLeu: 6.438 ± 0.099
2.339GluMet: 2.339 ± 0.054
4.705GluAsn: 4.705 ± 0.091
1.776GluPro: 1.776 ± 0.052
3.548GluGln: 3.548 ± 0.08
2.948GluArg: 2.948 ± 0.07
3.451GluSer: 3.451 ± 0.073
3.641GluThr: 3.641 ± 0.064
4.512GluVal: 4.512 ± 0.083
0.538GluTrp: 0.538 ± 0.025
3.272GluTyr: 3.272 ± 0.072
0.0GluXaa: 0.0 ± 0.0
Phe
3.284PheAla: 3.284 ± 0.061
0.727PheCys: 0.727 ± 0.03
2.484PheAsp: 2.484 ± 0.061
2.744PheGlu: 2.744 ± 0.063
1.675PhePhe: 1.675 ± 0.053
2.964PheGly: 2.964 ± 0.073
0.813PheHis: 0.813 ± 0.037
2.943PheIle: 2.943 ± 0.075
2.233PheLys: 2.233 ± 0.058
3.458PheLeu: 3.458 ± 0.084
1.143PheMet: 1.143 ± 0.039
1.609PheAsn: 1.609 ± 0.048
1.248PhePro: 1.248 ± 0.042
1.101PheGln: 1.101 ± 0.04
1.406PheArg: 1.406 ± 0.04
2.574PheSer: 2.574 ± 0.063
2.521PheThr: 2.521 ± 0.06
2.805PheVal: 2.805 ± 0.066
0.311PheTrp: 0.311 ± 0.019
1.78PheTyr: 1.78 ± 0.054
0.0PheXaa: 0.0 ± 0.0
Gly
5.022GlyAla: 5.022 ± 0.097
1.199GlyCys: 1.199 ± 0.042
3.177GlyAsp: 3.177 ± 0.075
4.241GlyGlu: 4.241 ± 0.076
2.977GlyPhe: 2.977 ± 0.064
4.481GlyGly: 4.481 ± 0.098
1.211GlyHis: 1.211 ± 0.043
6.165GlyIle: 6.165 ± 0.12
5.254GlyLys: 5.254 ± 0.097
5.581GlyLeu: 5.581 ± 0.081
2.507GlyMet: 2.507 ± 0.062
3.202GlyAsn: 3.202 ± 0.072
1.094GlyPro: 1.094 ± 0.042
2.278GlyGln: 2.278 ± 0.059
2.837GlyArg: 2.837 ± 0.061
4.123GlySer: 4.123 ± 0.094
4.449GlyThr: 4.449 ± 0.101
4.732GlyVal: 4.732 ± 0.084
0.656GlyTrp: 0.656 ± 0.038
3.354GlyTyr: 3.354 ± 0.071
0.0GlyXaa: 0.0 ± 0.0
His
1.156HisAla: 1.156 ± 0.043
0.315HisCys: 0.315 ± 0.018
0.888HisAsp: 0.888 ± 0.032
1.117HisGlu: 1.117 ± 0.038
0.939HisPhe: 0.939 ± 0.036
1.192HisGly: 1.192 ± 0.038
0.411HisHis: 0.411 ± 0.028
1.467HisIle: 1.467 ± 0.048
1.015HisLys: 1.015 ± 0.039
1.463HisLeu: 1.463 ± 0.04
0.552HisMet: 0.552 ± 0.026
0.74HisAsn: 0.74 ± 0.032
0.73HisPro: 0.73 ± 0.027
0.492HisGln: 0.492 ± 0.026
0.674HisArg: 0.674 ± 0.033
1.004HisSer: 1.004 ± 0.038
1.016HisThr: 1.016 ± 0.039
1.024HisVal: 1.024 ± 0.033
0.131HisTrp: 0.131 ± 0.012
0.707HisTyr: 0.707 ± 0.029
0.0HisXaa: 0.0 ± 0.0
Ile
6.118IleAla: 6.118 ± 0.1
1.318IleCys: 1.318 ± 0.048
4.261IleAsp: 4.261 ± 0.083
5.067IleGlu: 5.067 ± 0.084
2.883IlePhe: 2.883 ± 0.072
4.947IleGly: 4.947 ± 0.093
1.385IleHis: 1.385 ± 0.046
5.164IleIle: 5.164 ± 0.118
4.309IleLys: 4.309 ± 0.088
6.67IleLeu: 6.67 ± 0.126
1.891IleMet: 1.891 ± 0.049
2.943IleAsn: 2.943 ± 0.07
2.77IlePro: 2.77 ± 0.07
2.553IleGln: 2.553 ± 0.053
3.405IleArg: 3.405 ± 0.069
4.755IleSer: 4.755 ± 0.08
4.704IleThr: 4.704 ± 0.089
5.328IleVal: 5.328 ± 0.1
0.524IleTrp: 0.524 ± 0.025
2.941IleTyr: 2.941 ± 0.068
0.0IleXaa: 0.0 ± 0.0
Lys
5.26LysAla: 5.26 ± 0.082
0.8LysCys: 0.8 ± 0.039
4.104LysAsp: 4.104 ± 0.086
6.753LysGlu: 6.753 ± 0.124
1.917LysPhe: 1.917 ± 0.049
4.039LysGly: 4.039 ± 0.073
1.02LysHis: 1.02 ± 0.033
4.987LysIle: 4.987 ± 0.079
6.528LysLys: 6.528 ± 0.126
5.496LysLeu: 5.496 ± 0.099
2.436LysMet: 2.436 ± 0.056
4.226LysAsn: 4.226 ± 0.078
1.969LysPro: 1.969 ± 0.054
2.662LysGln: 2.662 ± 0.07
2.851LysArg: 2.851 ± 0.068
3.338LysSer: 3.338 ± 0.072
4.013LysThr: 4.013 ± 0.084
4.353LysVal: 4.353 ± 0.083
0.521LysTrp: 0.521 ± 0.024
2.954LysTyr: 2.954 ± 0.058
0.0LysXaa: 0.0 ± 0.0
Leu
6.607LeuAla: 6.607 ± 0.095
1.486LeuCys: 1.486 ± 0.051
4.732LeuAsp: 4.732 ± 0.089
5.861LeuGlu: 5.861 ± 0.092
3.588LeuPhe: 3.588 ± 0.091
5.229LeuGly: 5.229 ± 0.091
1.445LeuHis: 1.445 ± 0.051
5.878LeuIle: 5.878 ± 0.11
6.3LeuLys: 6.3 ± 0.091
7.872LeuLeu: 7.872 ± 0.149
2.522LeuMet: 2.522 ± 0.06
3.855LeuAsn: 3.855 ± 0.071
3.149LeuPro: 3.149 ± 0.057
2.725LeuGln: 2.725 ± 0.066
3.252LeuArg: 3.252 ± 0.07
6.269LeuSer: 6.269 ± 0.098
5.027LeuThr: 5.027 ± 0.091
5.413LeuVal: 5.413 ± 0.093
0.634LeuTrp: 0.634 ± 0.035
3.37LeuTyr: 3.37 ± 0.069
0.0LeuXaa: 0.0 ± 0.0
Met
2.548MetAla: 2.548 ± 0.059
0.391MetCys: 0.391 ± 0.021
1.78MetAsp: 1.78 ± 0.049
2.303MetGlu: 2.303 ± 0.056
1.005MetPhe: 1.005 ± 0.041
2.03MetGly: 2.03 ± 0.055
0.471MetHis: 0.471 ± 0.022
2.119MetIle: 2.119 ± 0.051
2.45MetLys: 2.45 ± 0.05
2.616MetLeu: 2.616 ± 0.054
0.949MetMet: 0.949 ± 0.041
1.745MetAsn: 1.745 ± 0.047
1.155MetPro: 1.155 ± 0.04
1.39MetGln: 1.39 ± 0.042
1.237MetArg: 1.237 ± 0.036
1.779MetSer: 1.779 ± 0.047
1.832MetThr: 1.832 ± 0.041
1.879MetVal: 1.879 ± 0.051
0.204MetTrp: 0.204 ± 0.017
1.079MetTyr: 1.079 ± 0.037
0.0MetXaa: 0.0 ± 0.0
Asn
3.734AsnAla: 3.734 ± 0.087
0.676AsnCys: 0.676 ± 0.03
2.293AsnAsp: 2.293 ± 0.06
3.203AsnGlu: 3.203 ± 0.073
1.531AsnPhe: 1.531 ± 0.046
3.809AsnGly: 3.809 ± 0.09
0.864AsnHis: 0.864 ± 0.039
3.729AsnIle: 3.729 ± 0.075
2.775AsnLys: 2.775 ± 0.06
3.602AsnLeu: 3.602 ± 0.073
1.436AsnMet: 1.436 ± 0.042
2.212AsnAsn: 2.212 ± 0.079
2.028AsnPro: 2.028 ± 0.048
1.495AsnGln: 1.495 ± 0.047
1.912AsnArg: 1.912 ± 0.047
2.596AsnSer: 2.596 ± 0.067
2.961AsnThr: 2.961 ± 0.059
3.401AsnVal: 3.401 ± 0.074
0.345AsnTrp: 0.345 ± 0.022
1.808AsnTyr: 1.808 ± 0.052
0.0AsnXaa: 0.0 ± 0.0
Pro
2.342ProAla: 2.342 ± 0.067
0.45ProCys: 0.45 ± 0.022
2.268ProAsp: 2.268 ± 0.054
2.862ProGlu: 2.862 ± 0.065
1.404ProPhe: 1.404 ± 0.046
1.967ProGly: 1.967 ± 0.058
0.508ProHis: 0.508 ± 0.026
1.581ProIle: 1.581 ± 0.054
1.77ProLys: 1.77 ± 0.047
2.427ProLeu: 2.427 ± 0.056
0.763ProMet: 0.763 ± 0.031
0.984ProAsn: 0.984 ± 0.031
0.603ProPro: 0.603 ± 0.029
1.353ProGln: 1.353 ± 0.042
0.76ProArg: 0.76 ± 0.027
1.548ProSer: 1.548 ± 0.047
1.386ProThr: 1.386 ± 0.05
3.145ProVal: 3.145 ± 0.069
0.245ProTrp: 0.245 ± 0.015
1.378ProTyr: 1.378 ± 0.042
0.0ProXaa: 0.0 ± 0.0
Gln
2.75GlnAla: 2.75 ± 0.064
0.375GlnCys: 0.375 ± 0.022
1.715GlnAsp: 1.715 ± 0.051
2.791GlnGlu: 2.791 ± 0.065
1.273GlnPhe: 1.273 ± 0.041
1.83GlnGly: 1.83 ± 0.047
0.524GlnHis: 0.524 ± 0.027
2.977GlnIle: 2.977 ± 0.067
2.932GlnLys: 2.932 ± 0.077
3.237GlnLeu: 3.237 ± 0.08
1.376GlnMet: 1.376 ± 0.038
1.857GlnAsn: 1.857 ± 0.053
1.044GlnPro: 1.044 ± 0.047
1.476GlnGln: 1.476 ± 0.059
1.314GlnArg: 1.314 ± 0.044
1.806GlnSer: 1.806 ± 0.046
2.177GlnThr: 2.177 ± 0.062
2.035GlnVal: 2.035 ± 0.046
0.267GlnTrp: 0.267 ± 0.017
1.648GlnTyr: 1.648 ± 0.052
0.0GlnXaa: 0.0 ± 0.0
Arg
2.532ArgAla: 2.532 ± 0.059
0.544ArgCys: 0.544 ± 0.027
1.815ArgAsp: 1.815 ± 0.05
3.046ArgGlu: 3.046 ± 0.073
1.749ArgPhe: 1.749 ± 0.046
2.106ArgGly: 2.106 ± 0.056
0.746ArgHis: 0.746 ± 0.029
3.398ArgIle: 3.398 ± 0.069
3.005ArgLys: 3.005 ± 0.066
3.657ArgLeu: 3.657 ± 0.078
1.355ArgMet: 1.355 ± 0.04
1.953ArgAsn: 1.953 ± 0.048
1.146ArgPro: 1.146 ± 0.039
1.708ArgGln: 1.708 ± 0.049
1.782ArgArg: 1.782 ± 0.057
1.908ArgSer: 1.908 ± 0.046
2.091ArgThr: 2.091 ± 0.053
2.576ArgVal: 2.576 ± 0.057
0.284ArgTrp: 0.284 ± 0.022
1.883ArgTyr: 1.883 ± 0.051
0.0ArgXaa: 0.0 ± 0.0
Ser
4.644SerAla: 4.644 ± 0.1
0.79SerCys: 0.79 ± 0.033
3.575SerAsp: 3.575 ± 0.076
3.954SerGlu: 3.954 ± 0.076
2.506SerPhe: 2.506 ± 0.057
5.006SerGly: 5.006 ± 0.103
0.91SerHis: 0.91 ± 0.033
4.157SerIle: 4.157 ± 0.076
3.362SerLys: 3.362 ± 0.068
4.582SerLeu: 4.582 ± 0.074
1.756SerMet: 1.756 ± 0.048
2.334SerAsn: 2.334 ± 0.067
1.471SerPro: 1.471 ± 0.043
1.879SerGln: 1.879 ± 0.049
2.425SerArg: 2.425 ± 0.056
3.601SerSer: 3.601 ± 0.088
3.022SerThr: 3.022 ± 0.08
4.597SerVal: 4.597 ± 0.085
0.448SerTrp: 0.448 ± 0.026
2.533SerTyr: 2.533 ± 0.063
0.0SerXaa: 0.0 ± 0.0
Thr
5.432ThrAla: 5.432 ± 0.101
0.64ThrCys: 0.64 ± 0.04
3.687ThrAsp: 3.687 ± 0.08
3.908ThrGlu: 3.908 ± 0.073
2.391ThrPhe: 2.391 ± 0.054
5.084ThrGly: 5.084 ± 0.098
0.969ThrHis: 0.969 ± 0.033
3.962ThrIle: 3.962 ± 0.073
3.492ThrLys: 3.492 ± 0.069
4.816ThrLeu: 4.816 ± 0.084
1.414ThrMet: 1.414 ± 0.038
2.196ThrAsn: 2.196 ± 0.052
2.082ThrPro: 2.082 ± 0.059
2.233ThrGln: 2.233 ± 0.059
1.855ThrArg: 1.855 ± 0.042
2.942ThrSer: 2.942 ± 0.077
3.379ThrThr: 3.379 ± 0.097
5.102ThrVal: 5.102 ± 0.122
0.414ThrTrp: 0.414 ± 0.026
2.206ThrTyr: 2.206 ± 0.069
0.0ThrXaa: 0.0 ± 0.0
Val
4.948ValAla: 4.948 ± 0.091
1.309ValCys: 1.309 ± 0.044
3.867ValAsp: 3.867 ± 0.073
4.471ValGlu: 4.471 ± 0.083
3.111ValPhe: 3.111 ± 0.073
4.032ValGly: 4.032 ± 0.079
1.227ValHis: 1.227 ± 0.038
5.604ValIle: 5.604 ± 0.106
4.732ValLys: 4.732 ± 0.089
7.109ValLeu: 7.109 ± 0.116
2.185ValMet: 2.185 ± 0.057
3.212ValAsn: 3.212 ± 0.07
2.34ValPro: 2.34 ± 0.058
2.273ValGln: 2.273 ± 0.055
3.004ValArg: 3.004 ± 0.074
4.965ValSer: 4.965 ± 0.083
4.78ValThr: 4.78 ± 0.116
5.165ValVal: 5.165 ± 0.102
0.553ValTrp: 0.553 ± 0.029
3.166ValTyr: 3.166 ± 0.061
0.0ValXaa: 0.0 ± 0.0
Trp
0.432TrpAla: 0.432 ± 0.024
0.128TrpCys: 0.128 ± 0.011
0.463TrpAsp: 0.463 ± 0.026
0.538TrpGlu: 0.538 ± 0.026
0.36TrpPhe: 0.36 ± 0.021
0.511TrpGly: 0.511 ± 0.032
0.167TrpHis: 0.167 ± 0.014
0.572TrpIle: 0.572 ± 0.028
0.593TrpLys: 0.593 ± 0.029
0.757TrpLeu: 0.757 ± 0.034
0.177TrpMet: 0.177 ± 0.016
0.477TrpAsn: 0.477 ± 0.028
0.141TrpPro: 0.141 ± 0.014
0.305TrpGln: 0.305 ± 0.02
0.281TrpArg: 0.281 ± 0.017
0.369TrpSer: 0.369 ± 0.021
0.357TrpThr: 0.357 ± 0.024
0.46TrpVal: 0.46 ± 0.026
0.159TrpTrp: 0.159 ± 0.028
0.471TrpTyr: 0.471 ± 0.04
0.0TrpXaa: 0.0 ± 0.0
Tyr
3.195TyrAla: 3.195 ± 0.066
0.636TyrCys: 0.636 ± 0.031
2.764TyrAsp: 2.764 ± 0.067
3.144TyrGlu: 3.144 ± 0.063
1.894TyrPhe: 1.894 ± 0.052
2.998TyrGly: 2.998 ± 0.072
0.841TyrHis: 0.841 ± 0.03
3.171TyrIle: 3.171 ± 0.067
2.454TyrLys: 2.454 ± 0.057
3.565TyrLeu: 3.565 ± 0.065
1.305TyrMet: 1.305 ± 0.038
2.096TyrAsn: 2.096 ± 0.061
1.42TyrPro: 1.42 ± 0.047
1.546TyrGln: 1.546 ± 0.047
2.005TyrArg: 2.005 ± 0.053
2.479TyrSer: 2.479 ± 0.065
2.741TyrThr: 2.741 ± 0.072
2.751TyrVal: 2.751 ± 0.064
0.324TyrTrp: 0.324 ± 0.02
2.013TyrTyr: 2.013 ± 0.059
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 2436 proteins (802892 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