Amino acid dipepetide frequency for Ramlibacter sp. Leaf400

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
18.874AlaAla: 18.874 ± 0.195
1.341AlaCys: 1.341 ± 0.03
6.333AlaAsp: 6.333 ± 0.09
6.476AlaGlu: 6.476 ± 0.077
4.23AlaPhe: 4.23 ± 0.061
11.971AlaGly: 11.971 ± 0.122
2.52AlaHis: 2.52 ± 0.05
4.944AlaIle: 4.944 ± 0.062
3.469AlaLys: 3.469 ± 0.07
14.425AlaLeu: 14.425 ± 0.14
3.572AlaMet: 3.572 ± 0.055
2.683AlaAsn: 2.683 ± 0.046
6.727AlaPro: 6.727 ± 0.099
6.053AlaGln: 6.053 ± 0.08
10.07AlaArg: 10.07 ± 0.105
6.625AlaSer: 6.625 ± 0.089
6.252AlaThr: 6.252 ± 0.097
9.545AlaVal: 9.545 ± 0.095
2.085AlaTrp: 2.085 ± 0.046
2.31AlaTyr: 2.31 ± 0.043
0.001AlaXaa: 0.001 ± 0.001
Cys
1.155CysAla: 1.155 ± 0.03
0.118CysCys: 0.118 ± 0.01
0.524CysAsp: 0.524 ± 0.02
0.56CysGlu: 0.56 ± 0.021
0.276CysPhe: 0.276 ± 0.013
1.04CysGly: 1.04 ± 0.032
0.261CysHis: 0.261 ± 0.013
0.392CysIle: 0.392 ± 0.017
0.213CysLys: 0.213 ± 0.013
0.786CysLeu: 0.786 ± 0.024
0.195CysMet: 0.195 ± 0.012
0.208CysAsn: 0.208 ± 0.011
0.481CysPro: 0.481 ± 0.021
0.211CysGln: 0.211 ± 0.011
0.628CysArg: 0.628 ± 0.022
0.468CysSer: 0.468 ± 0.018
0.484CysThr: 0.484 ± 0.022
0.726CysVal: 0.726 ± 0.02
0.139CysTrp: 0.139 ± 0.009
0.188CysTyr: 0.188 ± 0.012
0.0CysXaa: 0.0 ± 0.0
Asp
6.681AspAla: 6.681 ± 0.087
0.432AspCys: 0.432 ± 0.018
2.535AspAsp: 2.535 ± 0.049
3.213AspGlu: 3.213 ± 0.052
2.037AspPhe: 2.037 ± 0.04
4.658AspGly: 4.658 ± 0.077
1.083AspHis: 1.083 ± 0.028
2.174AspIle: 2.174 ± 0.041
1.552AspLys: 1.552 ± 0.04
5.483AspLeu: 5.483 ± 0.073
1.104AspMet: 1.104 ± 0.028
1.095AspAsn: 1.095 ± 0.032
3.189AspPro: 3.189 ± 0.05
1.503AspGln: 1.503 ± 0.033
3.739AspArg: 3.739 ± 0.055
2.094AspSer: 2.094 ± 0.046
2.408AspThr: 2.408 ± 0.059
4.135AspVal: 4.135 ± 0.055
0.918AspTrp: 0.918 ± 0.028
1.294AspTyr: 1.294 ± 0.03
0.0AspXaa: 0.0 ± 0.0
Glu
7.111GluAla: 7.111 ± 0.09
0.42GluCys: 0.42 ± 0.018
2.417GluAsp: 2.417 ± 0.047
2.881GluGlu: 2.881 ± 0.058
1.868GluPhe: 1.868 ± 0.038
4.305GluGly: 4.305 ± 0.065
1.403GluHis: 1.403 ± 0.032
2.511GluIle: 2.511 ± 0.054
1.838GluLys: 1.838 ± 0.051
6.06GluLeu: 6.06 ± 0.076
1.35GluMet: 1.35 ± 0.032
1.199GluAsn: 1.199 ± 0.035
2.856GluPro: 2.856 ± 0.054
2.628GluGln: 2.628 ± 0.049
4.967GluArg: 4.967 ± 0.075
2.426GluSer: 2.426 ± 0.041
2.407GluThr: 2.407 ± 0.043
4.4GluVal: 4.4 ± 0.069
0.775GluTrp: 0.775 ± 0.027
1.023GluTyr: 1.023 ± 0.025
0.0GluXaa: 0.0 ± 0.0
Phe
4.287PheAla: 4.287 ± 0.066
0.357PheCys: 0.357 ± 0.018
2.439PheAsp: 2.439 ± 0.045
2.126PheGlu: 2.126 ± 0.038
1.296PhePhe: 1.296 ± 0.036
3.432PheGly: 3.432 ± 0.055
0.791PheHis: 0.791 ± 0.025
1.382PheIle: 1.382 ± 0.035
0.996PheLys: 0.996 ± 0.028
3.025PheLeu: 3.025 ± 0.048
0.743PheMet: 0.743 ± 0.027
1.031PheAsn: 1.031 ± 0.027
1.627PhePro: 1.627 ± 0.038
1.031PheGln: 1.031 ± 0.03
2.103PheArg: 2.103 ± 0.041
2.008PheSer: 2.008 ± 0.041
1.951PheThr: 1.951 ± 0.051
2.752PheVal: 2.752 ± 0.053
0.524PheTrp: 0.524 ± 0.022
0.807PheTyr: 0.807 ± 0.025
0.0PheXaa: 0.0 ± 0.0
Gly
9.989GlyAla: 9.989 ± 0.111
0.933GlyCys: 0.933 ± 0.023
4.08GlyAsp: 4.08 ± 0.066
4.815GlyGlu: 4.815 ± 0.061
3.367GlyPhe: 3.367 ± 0.048
8.044GlyGly: 8.044 ± 0.144
2.026GlyHis: 2.026 ± 0.047
3.833GlyIle: 3.833 ± 0.051
3.079GlyLys: 3.079 ± 0.049
9.252GlyLeu: 9.252 ± 0.102
2.293GlyMet: 2.293 ± 0.044
2.144GlyAsn: 2.144 ± 0.067
3.737GlyPro: 3.737 ± 0.06
3.511GlyGln: 3.511 ± 0.058
6.506GlyArg: 6.506 ± 0.086
4.891GlySer: 4.891 ± 0.08
4.831GlyThr: 4.831 ± 0.105
6.777GlyVal: 6.777 ± 0.084
1.59GlyTrp: 1.59 ± 0.039
2.224GlyTyr: 2.224 ± 0.041
0.0GlyXaa: 0.0 ± 0.0
His
2.773HisAla: 2.773 ± 0.048
0.288HisCys: 0.288 ± 0.016
1.156HisAsp: 1.156 ± 0.03
1.281HisGlu: 1.281 ± 0.033
0.834HisPhe: 0.834 ± 0.029
2.181HisGly: 2.181 ± 0.046
0.592HisHis: 0.592 ± 0.023
0.808HisIle: 0.808 ± 0.022
0.546HisLys: 0.546 ± 0.019
2.318HisLeu: 2.318 ± 0.047
0.451HisMet: 0.451 ± 0.02
0.463HisAsn: 0.463 ± 0.02
1.557HisPro: 1.557 ± 0.039
0.747HisGln: 0.747 ± 0.024
1.582HisArg: 1.582 ± 0.038
0.959HisSer: 0.959 ± 0.028
0.938HisThr: 0.938 ± 0.025
1.75HisVal: 1.75 ± 0.036
0.42HisTrp: 0.42 ± 0.021
0.573HisTyr: 0.573 ± 0.02
0.0HisXaa: 0.0 ± 0.0
Ile
5.669IleAla: 5.669 ± 0.066
0.388IleCys: 0.388 ± 0.018
2.604IleAsp: 2.604 ± 0.047
2.831IleGlu: 2.831 ± 0.056
1.096IlePhe: 1.096 ± 0.032
3.886IleGly: 3.886 ± 0.055
0.801IleHis: 0.801 ± 0.023
1.112IleIle: 1.112 ± 0.033
1.17IleLys: 1.17 ± 0.033
2.946IleLeu: 2.946 ± 0.053
0.632IleMet: 0.632 ± 0.022
1.096IleAsn: 1.096 ± 0.029
1.909IlePro: 1.909 ± 0.042
1.124IleGln: 1.124 ± 0.03
2.612IleArg: 2.612 ± 0.044
2.006IleSer: 2.006 ± 0.045
2.261IleThr: 2.261 ± 0.042
3.343IleVal: 3.343 ± 0.055
0.384IleTrp: 0.384 ± 0.017
0.799IleTyr: 0.799 ± 0.022
0.0IleXaa: 0.0 ± 0.0
Lys
4.071LysAla: 4.071 ± 0.072
0.139LysCys: 0.139 ± 0.011
1.552LysAsp: 1.552 ± 0.041
1.449LysGlu: 1.449 ± 0.039
0.952LysPhe: 0.952 ± 0.029
2.293LysGly: 2.293 ± 0.048
0.576LysHis: 0.576 ± 0.021
1.191LysIle: 1.191 ± 0.034
1.185LysLys: 1.185 ± 0.046
3.346LysLeu: 3.346 ± 0.054
0.719LysMet: 0.719 ± 0.026
0.736LysAsn: 0.736 ± 0.027
1.991LysPro: 1.991 ± 0.044
1.034LysGln: 1.034 ± 0.029
2.01LysArg: 2.01 ± 0.041
1.53LysSer: 1.53 ± 0.04
1.582LysThr: 1.582 ± 0.038
2.622LysVal: 2.622 ± 0.056
0.334LysTrp: 0.334 ± 0.014
0.603LysTyr: 0.603 ± 0.022
0.0LysXaa: 0.0 ± 0.0
Leu
15.467LeuAla: 15.467 ± 0.151
0.953LeuCys: 0.953 ± 0.027
5.648LeuAsp: 5.648 ± 0.061
5.618LeuGlu: 5.618 ± 0.077
3.307LeuPhe: 3.307 ± 0.057
8.898LeuGly: 8.898 ± 0.095
2.349LeuHis: 2.349 ± 0.046
3.45LeuIle: 3.45 ± 0.06
3.339LeuLys: 3.339 ± 0.053
11.294LeuLeu: 11.294 ± 0.134
2.417LeuMet: 2.417 ± 0.045
2.361LeuAsn: 2.361 ± 0.043
6.375LeuPro: 6.375 ± 0.074
4.366LeuGln: 4.366 ± 0.059
8.341LeuArg: 8.341 ± 0.095
5.478LeuSer: 5.478 ± 0.073
4.843LeuThr: 4.843 ± 0.073
8.677LeuVal: 8.677 ± 0.099
1.363LeuTrp: 1.363 ± 0.037
1.944LeuTyr: 1.944 ± 0.04
0.0LeuXaa: 0.0 ± 0.0
Met
3.132MetAla: 3.132 ± 0.053
0.161MetCys: 0.161 ± 0.012
1.186MetAsp: 1.186 ± 0.031
1.118MetGlu: 1.118 ± 0.027
0.714MetPhe: 0.714 ± 0.022
1.887MetGly: 1.887 ± 0.044
0.492MetHis: 0.492 ± 0.019
0.773MetIle: 0.773 ± 0.028
1.09MetLys: 1.09 ± 0.028
2.539MetLeu: 2.539 ± 0.044
0.546MetMet: 0.546 ± 0.017
0.788MetAsn: 0.788 ± 0.023
1.485MetPro: 1.485 ± 0.034
0.998MetGln: 0.998 ± 0.023
1.705MetArg: 1.705 ± 0.039
1.405MetSer: 1.405 ± 0.037
1.404MetThr: 1.404 ± 0.032
1.849MetVal: 1.849 ± 0.037
0.199MetTrp: 0.199 ± 0.012
0.393MetTyr: 0.393 ± 0.018
0.0MetXaa: 0.0 ± 0.0
Asn
2.865AsnAla: 2.865 ± 0.049
0.241AsnCys: 0.241 ± 0.014
1.198AsnAsp: 1.198 ± 0.052
1.145AsnGlu: 1.145 ± 0.03
0.876AsnPhe: 0.876 ± 0.024
2.097AsnGly: 2.097 ± 0.063
0.469AsnHis: 0.469 ± 0.021
1.037AsnIle: 1.037 ± 0.031
0.686AsnLys: 0.686 ± 0.027
2.466AsnLeu: 2.466 ± 0.045
0.511AsnMet: 0.511 ± 0.02
0.66AsnAsn: 0.66 ± 0.025
1.772AsnPro: 1.772 ± 0.038
0.759AsnGln: 0.759 ± 0.025
1.663AsnArg: 1.663 ± 0.034
1.026AsnSer: 1.026 ± 0.029
1.177AsnThr: 1.177 ± 0.036
1.934AsnVal: 1.934 ± 0.047
0.405AsnTrp: 0.405 ± 0.02
0.564AsnTyr: 0.564 ± 0.024
0.0AsnXaa: 0.0 ± 0.0
Pro
8.043ProAla: 8.043 ± 0.108
0.373ProCys: 0.373 ± 0.017
3.229ProAsp: 3.229 ± 0.052
3.461ProGlu: 3.461 ± 0.055
1.892ProPhe: 1.892 ± 0.04
5.492ProGly: 5.492 ± 0.071
1.23ProHis: 1.23 ± 0.032
1.836ProIle: 1.836 ± 0.036
1.414ProLys: 1.414 ± 0.037
5.374ProLeu: 5.374 ± 0.069
1.32ProMet: 1.32 ± 0.03
1.246ProAsn: 1.246 ± 0.038
3.201ProPro: 3.201 ± 0.07
2.563ProGln: 2.563 ± 0.045
3.56ProArg: 3.56 ± 0.062
2.806ProSer: 2.806 ± 0.053
2.61ProThr: 2.61 ± 0.053
4.749ProVal: 4.749 ± 0.067
0.837ProTrp: 0.837 ± 0.026
1.104ProTyr: 1.104 ± 0.032
0.0ProXaa: 0.0 ± 0.0
Gln
5.957GlnAla: 5.957 ± 0.079
0.285GlnCys: 0.285 ± 0.016
1.846GlnAsp: 1.846 ± 0.035
1.981GlnGlu: 1.981 ± 0.039
1.182GlnPhe: 1.182 ± 0.034
3.278GlnGly: 3.278 ± 0.055
0.894GlnHis: 0.894 ± 0.025
1.327GlnIle: 1.327 ± 0.032
1.064GlnLys: 1.064 ± 0.03
4.366GlnLeu: 4.366 ± 0.065
0.917GlnMet: 0.917 ± 0.03
0.698GlnAsn: 0.698 ± 0.023
2.511GlnPro: 2.511 ± 0.044
1.915GlnGln: 1.915 ± 0.043
3.454GlnArg: 3.454 ± 0.059
1.75GlnSer: 1.75 ± 0.039
1.494GlnThr: 1.494 ± 0.034
3.399GlnVal: 3.399 ± 0.052
0.659GlnTrp: 0.659 ± 0.024
0.661GlnTyr: 0.661 ± 0.022
0.001GlnXaa: 0.001 ± 0.001
Arg
8.319ArgAla: 8.319 ± 0.088
0.63ArgCys: 0.63 ± 0.022
3.794ArgAsp: 3.794 ± 0.06
5.02ArgGlu: 5.02 ± 0.073
2.869ArgPhe: 2.869 ± 0.051
5.316ArgGly: 5.316 ± 0.068
1.978ArgHis: 1.978 ± 0.04
3.527ArgIle: 3.527 ± 0.054
2.368ArgLys: 2.368 ± 0.051
8.544ArgLeu: 8.544 ± 0.102
2.098ArgMet: 2.098 ± 0.041
1.81ArgAsn: 1.81 ± 0.039
3.848ArgPro: 3.848 ± 0.057
3.06ArgGln: 3.06 ± 0.06
6.017ArgArg: 6.017 ± 0.094
3.72ArgSer: 3.72 ± 0.051
3.587ArgThr: 3.587 ± 0.052
5.495ArgVal: 5.495 ± 0.066
1.349ArgTrp: 1.349 ± 0.035
1.737ArgTyr: 1.737 ± 0.039
0.001ArgXaa: 0.001 ± 0.001
Ser
6.061SerAla: 6.061 ± 0.082
0.449SerCys: 0.449 ± 0.019
2.307SerAsp: 2.307 ± 0.043
2.331SerGlu: 2.331 ± 0.05
1.978SerPhe: 1.978 ± 0.041
5.127SerGly: 5.127 ± 0.07
1.093SerHis: 1.093 ± 0.024
2.102SerIle: 2.102 ± 0.033
1.282SerLys: 1.282 ± 0.035
5.268SerLeu: 5.268 ± 0.073
1.303SerMet: 1.303 ± 0.029
1.19SerAsn: 1.19 ± 0.035
3.022SerPro: 3.022 ± 0.056
1.762SerGln: 1.762 ± 0.039
3.785SerArg: 3.785 ± 0.061
2.815SerSer: 2.815 ± 0.055
2.803SerThr: 2.803 ± 0.056
3.842SerVal: 3.842 ± 0.061
0.727SerTrp: 0.727 ± 0.023
1.159SerTyr: 1.159 ± 0.031
0.0SerXaa: 0.0 ± 0.0
Thr
5.926ThrAla: 5.926 ± 0.081
0.438ThrCys: 0.438 ± 0.019
2.307ThrAsp: 2.307 ± 0.044
2.248ThrGlu: 2.248 ± 0.044
1.74ThrPhe: 1.74 ± 0.041
4.969ThrGly: 4.969 ± 0.081
1.111ThrHis: 1.111 ± 0.028
1.861ThrIle: 1.861 ± 0.039
1.089ThrLys: 1.089 ± 0.035
5.856ThrLeu: 5.856 ± 0.092
1.068ThrMet: 1.068 ± 0.028
1.074ThrAsn: 1.074 ± 0.03
3.577ThrPro: 3.577 ± 0.064
1.769ThrGln: 1.769 ± 0.039
3.402ThrArg: 3.402 ± 0.048
2.605ThrSer: 2.605 ± 0.057
2.672ThrThr: 2.672 ± 0.072
4.305ThrVal: 4.305 ± 0.098
0.705ThrTrp: 0.705 ± 0.025
0.978ThrTyr: 0.978 ± 0.032
0.0ThrXaa: 0.0 ± 0.0
Val
10.228ValAla: 10.228 ± 0.107
0.699ValCys: 0.699 ± 0.021
4.319ValAsp: 4.319 ± 0.065
4.526ValGlu: 4.526 ± 0.061
2.787ValPhe: 2.787 ± 0.046
5.997ValGly: 5.997 ± 0.078
1.775ValHis: 1.775 ± 0.043
3.103ValIle: 3.103 ± 0.051
2.396ValLys: 2.396 ± 0.051
8.94ValLeu: 8.94 ± 0.094
1.821ValMet: 1.821 ± 0.04
2.058ValAsn: 2.058 ± 0.04
4.578ValPro: 4.578 ± 0.07
3.119ValGln: 3.119 ± 0.055
5.982ValArg: 5.982 ± 0.076
3.941ValSer: 3.941 ± 0.059
4.06ValThr: 4.06 ± 0.078
7.139ValVal: 7.139 ± 0.077
1.013ValTrp: 1.013 ± 0.028
1.526ValTyr: 1.526 ± 0.033
0.0ValXaa: 0.0 ± 0.0
Trp
1.474TrpAla: 1.474 ± 0.037
0.174TrpCys: 0.174 ± 0.012
0.695TrpAsp: 0.695 ± 0.023
0.593TrpGlu: 0.593 ± 0.02
0.555TrpPhe: 0.555 ± 0.02
1.076TrpGly: 1.076 ± 0.028
0.342TrpHis: 0.342 ± 0.016
0.623TrpIle: 0.623 ± 0.021
0.508TrpLys: 0.508 ± 0.02
2.01TrpLeu: 2.01 ± 0.047
0.397TrpMet: 0.397 ± 0.018
0.471TrpAsn: 0.471 ± 0.024
0.789TrpPro: 0.789 ± 0.026
0.743TrpGln: 0.743 ± 0.028
1.33TrpArg: 1.33 ± 0.041
0.82TrpSer: 0.82 ± 0.024
0.808TrpThr: 0.808 ± 0.026
1.046TrpVal: 1.046 ± 0.029
0.292TrpTrp: 0.292 ± 0.018
0.316TrpTyr: 0.316 ± 0.017
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.422TyrAla: 2.422 ± 0.043
0.233TyrCys: 0.233 ± 0.014
1.158TyrAsp: 1.158 ± 0.033
1.17TyrGlu: 1.17 ± 0.029
0.855TyrPhe: 0.855 ± 0.024
1.975TyrGly: 1.975 ± 0.044
0.43TyrHis: 0.43 ± 0.02
0.686TyrIle: 0.686 ± 0.02
0.633TyrLys: 0.633 ± 0.024
2.187TyrLeu: 2.187 ± 0.043
0.406TyrMet: 0.406 ± 0.018
0.541TyrAsn: 0.541 ± 0.02
1.107TyrPro: 1.107 ± 0.028
0.743TyrGln: 0.743 ± 0.021
1.631TyrArg: 1.631 ± 0.034
1.034TyrSer: 1.034 ± 0.026
1.125TyrThr: 1.125 ± 0.04
1.521TyrVal: 1.521 ± 0.032
0.346TyrTrp: 0.346 ± 0.02
0.489TyrTyr: 0.489 ± 0.02
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
0.001XaaLeu: 0.001 ± 0.001
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
0.001XaaThr: 0.001 ± 0.001
0.0XaaVal: 0.0 ± 0.0
0.001XaaTrp: 0.001 ± 0.001
0.0XaaTyr: 0.0 ± 0.0
0.0XaaXaa: 0.0 ± 0.0
Statistics based on 4275 proteins (1370846 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