Amino acid dipepetide frequency for Rhodanobacter sp. B05

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
16.955AlaAla: 16.955 ± 0.197
1.27AlaCys: 1.27 ± 0.039
6.972AlaAsp: 6.972 ± 0.086
6.24AlaGlu: 6.24 ± 0.087
3.891AlaPhe: 3.891 ± 0.062
10.648AlaGly: 10.648 ± 0.113
2.881AlaHis: 2.881 ± 0.057
5.638AlaIle: 5.638 ± 0.084
3.515AlaLys: 3.515 ± 0.062
14.671AlaLeu: 14.671 ± 0.14
3.27AlaMet: 3.27 ± 0.062
3.013AlaAsn: 3.013 ± 0.06
5.897AlaPro: 5.897 ± 0.089
5.31AlaGln: 5.31 ± 0.082
8.79AlaArg: 8.79 ± 0.11
6.896AlaSer: 6.896 ± 0.082
6.241AlaThr: 6.241 ± 0.089
8.448AlaVal: 8.448 ± 0.097
2.081AlaTrp: 2.081 ± 0.046
2.515AlaTyr: 2.515 ± 0.055
0.0AlaXaa: 0.0 ± 0.0
Cys
1.054CysAla: 1.054 ± 0.028
0.121CysCys: 0.121 ± 0.011
0.465CysAsp: 0.465 ± 0.024
0.446CysGlu: 0.446 ± 0.021
0.298CysPhe: 0.298 ± 0.017
0.853CysGly: 0.853 ± 0.031
0.303CysHis: 0.303 ± 0.019
0.365CysIle: 0.365 ± 0.02
0.187CysLys: 0.187 ± 0.013
0.855CysLeu: 0.855 ± 0.035
0.195CysMet: 0.195 ± 0.014
0.207CysAsn: 0.207 ± 0.013
0.395CysPro: 0.395 ± 0.019
0.229CysGln: 0.229 ± 0.016
0.595CysArg: 0.595 ± 0.024
0.464CysSer: 0.464 ± 0.019
0.464CysThr: 0.464 ± 0.021
0.66CysVal: 0.66 ± 0.023
0.136CysTrp: 0.136 ± 0.011
0.228CysTyr: 0.228 ± 0.016
0.0CysXaa: 0.0 ± 0.0
Asp
7.726AspAla: 7.726 ± 0.092
0.442AspCys: 0.442 ± 0.021
3.442AspAsp: 3.442 ± 0.064
3.168AspGlu: 3.168 ± 0.063
2.18AspPhe: 2.18 ± 0.048
5.596AspGly: 5.596 ± 0.09
1.365AspHis: 1.365 ± 0.036
2.445AspIle: 2.445 ± 0.05
1.783AspLys: 1.783 ± 0.041
5.529AspLeu: 5.529 ± 0.071
1.18AspMet: 1.18 ± 0.03
1.476AspAsn: 1.476 ± 0.042
3.565AspPro: 3.565 ± 0.067
1.972AspGln: 1.972 ± 0.045
3.6AspArg: 3.6 ± 0.059
2.786AspSer: 2.786 ± 0.053
2.704AspThr: 2.704 ± 0.05
4.12AspVal: 4.12 ± 0.059
1.138AspTrp: 1.138 ± 0.034
1.835AspTyr: 1.835 ± 0.045
0.0AspXaa: 0.0 ± 0.0
Glu
5.933GluAla: 5.933 ± 0.094
0.358GluCys: 0.358 ± 0.019
2.124GluAsp: 2.124 ± 0.049
1.955GluGlu: 1.955 ± 0.052
1.66GluPhe: 1.66 ± 0.038
3.358GluGly: 3.358 ± 0.061
1.589GluHis: 1.589 ± 0.041
2.24GluIle: 2.24 ± 0.045
1.506GluLys: 1.506 ± 0.047
6.13GluLeu: 6.13 ± 0.091
1.024GluMet: 1.024 ± 0.033
1.184GluAsn: 1.184 ± 0.033
2.444GluPro: 2.444 ± 0.054
2.721GluGln: 2.721 ± 0.055
4.374GluArg: 4.374 ± 0.071
2.414GluSer: 2.414 ± 0.051
2.24GluThr: 2.24 ± 0.053
3.65GluVal: 3.65 ± 0.067
0.666GluTrp: 0.666 ± 0.023
1.112GluTyr: 1.112 ± 0.034
0.0GluXaa: 0.0 ± 0.0
Phe
4.274PheAla: 4.274 ± 0.06
0.314PheCys: 0.314 ± 0.018
2.609PheAsp: 2.609 ± 0.052
1.798PheGlu: 1.798 ± 0.047
1.209PhePhe: 1.209 ± 0.032
3.42PheGly: 3.42 ± 0.058
0.88PheHis: 0.88 ± 0.028
1.36PheIle: 1.36 ± 0.04
1.023PheLys: 1.023 ± 0.029
3.0PheLeu: 3.0 ± 0.062
0.722PheMet: 0.722 ± 0.027
1.126PheAsn: 1.126 ± 0.032
1.548PhePro: 1.548 ± 0.038
1.042PheGln: 1.042 ± 0.033
2.215PheArg: 2.215 ± 0.047
2.057PheSer: 2.057 ± 0.048
1.749PheThr: 1.749 ± 0.045
2.676PheVal: 2.676 ± 0.043
0.485PheTrp: 0.485 ± 0.025
0.945PheTyr: 0.945 ± 0.032
0.0PheXaa: 0.0 ± 0.0
Gly
8.888GlyAla: 8.888 ± 0.118
0.805GlyCys: 0.805 ± 0.027
4.665GlyAsp: 4.665 ± 0.072
4.521GlyGlu: 4.521 ± 0.059
3.351GlyPhe: 3.351 ± 0.059
6.968GlyGly: 6.968 ± 0.133
2.318GlyHis: 2.318 ± 0.046
4.188GlyIle: 4.188 ± 0.066
3.403GlyLys: 3.403 ± 0.071
8.436GlyLeu: 8.436 ± 0.094
2.359GlyMet: 2.359 ± 0.048
2.545GlyAsn: 2.545 ± 0.065
2.937GlyPro: 2.937 ± 0.051
3.157GlyGln: 3.157 ± 0.059
5.56GlyArg: 5.56 ± 0.076
5.215GlySer: 5.215 ± 0.095
4.282GlyThr: 4.282 ± 0.095
6.517GlyVal: 6.517 ± 0.084
1.696GlyTrp: 1.696 ± 0.048
2.533GlyTyr: 2.533 ± 0.053
0.0GlyXaa: 0.0 ± 0.0
His
3.614HisAla: 3.614 ± 0.068
0.26HisCys: 0.26 ± 0.015
1.716HisAsp: 1.716 ± 0.043
1.324HisGlu: 1.324 ± 0.036
0.961HisPhe: 0.961 ± 0.029
2.728HisGly: 2.728 ± 0.053
0.675HisHis: 0.675 ± 0.03
0.936HisIle: 0.936 ± 0.027
0.577HisLys: 0.577 ± 0.021
2.422HisLeu: 2.422 ± 0.053
0.595HisMet: 0.595 ± 0.025
0.527HisAsn: 0.527 ± 0.023
1.644HisPro: 1.644 ± 0.041
0.862HisGln: 0.862 ± 0.027
1.707HisArg: 1.707 ± 0.042
1.151HisSer: 1.151 ± 0.032
1.068HisThr: 1.068 ± 0.028
1.854HisVal: 1.854 ± 0.037
0.541HisTrp: 0.541 ± 0.025
0.83HisTyr: 0.83 ± 0.033
0.0HisXaa: 0.0 ± 0.0
Ile
6.089IleAla: 6.089 ± 0.078
0.395IleCys: 0.395 ± 0.02
3.446IleAsp: 3.446 ± 0.057
2.953IleGlu: 2.953 ± 0.053
1.276IlePhe: 1.276 ± 0.031
4.574IleGly: 4.574 ± 0.081
0.995IleHis: 0.995 ± 0.028
1.562IleIle: 1.562 ± 0.039
1.253IleLys: 1.253 ± 0.034
3.259IleLeu: 3.259 ± 0.061
0.615IleMet: 0.615 ± 0.026
1.357IleAsn: 1.357 ± 0.041
2.133IlePro: 2.133 ± 0.046
1.158IleGln: 1.158 ± 0.035
2.757IleArg: 2.757 ± 0.046
2.464IleSer: 2.464 ± 0.057
2.285IleThr: 2.285 ± 0.049
3.511IleVal: 3.511 ± 0.066
0.512IleTrp: 0.512 ± 0.019
1.051IleTyr: 1.051 ± 0.035
0.0IleXaa: 0.0 ± 0.0
Lys
3.531LysAla: 3.531 ± 0.068
0.134LysCys: 0.134 ± 0.012
1.496LysAsp: 1.496 ± 0.046
1.134LysGlu: 1.134 ± 0.042
0.872LysPhe: 0.872 ± 0.026
2.074LysGly: 2.074 ± 0.053
0.759LysHis: 0.759 ± 0.029
1.274LysIle: 1.274 ± 0.04
1.055LysLys: 1.055 ± 0.056
3.55LysLeu: 3.55 ± 0.066
0.635LysMet: 0.635 ± 0.022
0.754LysAsn: 0.754 ± 0.028
2.122LysPro: 2.122 ± 0.047
1.32LysGln: 1.32 ± 0.041
2.092LysArg: 2.092 ± 0.045
1.668LysSer: 1.668 ± 0.041
1.613LysThr: 1.613 ± 0.044
2.235LysVal: 2.235 ± 0.049
0.294LysTrp: 0.294 ± 0.016
0.747LysTyr: 0.747 ± 0.025
0.0LysXaa: 0.0 ± 0.0
Leu
15.035LeuAla: 15.035 ± 0.138
1.038LeuCys: 1.038 ± 0.033
6.922LeuAsp: 6.922 ± 0.088
4.866LeuGlu: 4.866 ± 0.088
3.536LeuPhe: 3.536 ± 0.066
8.953LeuGly: 8.953 ± 0.094
2.744LeuHis: 2.744 ± 0.06
4.484LeuIle: 4.484 ± 0.07
3.507LeuLys: 3.507 ± 0.061
12.799LeuLeu: 12.799 ± 0.19
2.05LeuMet: 2.05 ± 0.053
2.662LeuAsn: 2.662 ± 0.057
6.573LeuPro: 6.573 ± 0.082
4.181LeuGln: 4.181 ± 0.068
8.26LeuArg: 8.26 ± 0.112
6.013LeuSer: 6.013 ± 0.084
5.219LeuThr: 5.219 ± 0.092
7.46LeuVal: 7.46 ± 0.106
1.453LeuTrp: 1.453 ± 0.045
2.375LeuTyr: 2.375 ± 0.049
0.0LeuXaa: 0.0 ± 0.0
Met
2.644MetAla: 2.644 ± 0.051
0.143MetCys: 0.143 ± 0.011
1.103MetAsp: 1.103 ± 0.032
0.852MetGlu: 0.852 ± 0.028
0.747MetPhe: 0.747 ± 0.025
1.483MetGly: 1.483 ± 0.034
0.61MetHis: 0.61 ± 0.026
0.935MetIle: 0.935 ± 0.029
0.828MetLys: 0.828 ± 0.024
2.709MetLeu: 2.709 ± 0.056
0.446MetMet: 0.446 ± 0.02
0.775MetAsn: 0.775 ± 0.027
1.446MetPro: 1.446 ± 0.036
0.997MetGln: 0.997 ± 0.031
1.697MetArg: 1.697 ± 0.038
1.56MetSer: 1.56 ± 0.041
1.301MetThr: 1.301 ± 0.034
1.492MetVal: 1.492 ± 0.042
0.229MetTrp: 0.229 ± 0.015
0.436MetTyr: 0.436 ± 0.021
0.0MetXaa: 0.0 ± 0.0
Asn
3.187AsnAla: 3.187 ± 0.07
0.19AsnCys: 0.19 ± 0.015
1.484AsnAsp: 1.484 ± 0.039
1.188AsnGlu: 1.188 ± 0.033
0.976AsnPhe: 0.976 ± 0.029
2.492AsnGly: 2.492 ± 0.078
0.645AsnHis: 0.645 ± 0.025
1.146AsnIle: 1.146 ± 0.029
0.685AsnLys: 0.685 ± 0.026
2.798AsnLeu: 2.798 ± 0.053
0.49AsnMet: 0.49 ± 0.02
0.764AsnAsn: 0.764 ± 0.037
1.837AsnPro: 1.837 ± 0.046
0.9AsnGln: 0.9 ± 0.033
1.695AsnArg: 1.695 ± 0.036
1.275AsnSer: 1.275 ± 0.034
1.392AsnThr: 1.392 ± 0.044
1.966AsnVal: 1.966 ± 0.047
0.426AsnTrp: 0.426 ± 0.019
0.866AsnTyr: 0.866 ± 0.032
0.0AsnXaa: 0.0 ± 0.0
Pro
7.261ProAla: 7.261 ± 0.112
0.336ProCys: 0.336 ± 0.019
3.614ProAsp: 3.614 ± 0.06
2.809ProGlu: 2.809 ± 0.061
1.731ProPhe: 1.731 ± 0.043
4.827ProGly: 4.827 ± 0.072
1.255ProHis: 1.255 ± 0.039
2.0ProIle: 2.0 ± 0.041
1.409ProLys: 1.409 ± 0.04
5.514ProLeu: 5.514 ± 0.085
1.274ProMet: 1.274 ± 0.035
1.315ProAsn: 1.315 ± 0.038
2.946ProPro: 2.946 ± 0.072
2.155ProGln: 2.155 ± 0.046
3.254ProArg: 3.254 ± 0.056
2.837ProSer: 2.837 ± 0.059
2.604ProThr: 2.604 ± 0.049
4.087ProVal: 4.087 ± 0.056
0.892ProTrp: 0.892 ± 0.028
1.262ProTyr: 1.262 ± 0.036
0.0ProXaa: 0.0 ± 0.0
Gln
5.292GlnAla: 5.292 ± 0.081
0.264GlnCys: 0.264 ± 0.017
1.584GlnAsp: 1.584 ± 0.04
1.34GlnGlu: 1.34 ± 0.04
1.237GlnPhe: 1.237 ± 0.033
2.754GlnGly: 2.754 ± 0.054
1.2GlnHis: 1.2 ± 0.037
1.707GlnIle: 1.707 ± 0.04
0.97GlnLys: 0.97 ± 0.031
4.851GlnLeu: 4.851 ± 0.082
0.872GlnMet: 0.872 ± 0.03
0.852GlnAsn: 0.852 ± 0.027
2.514GlnPro: 2.514 ± 0.055
2.242GlnGln: 2.242 ± 0.056
3.671GlnArg: 3.671 ± 0.071
2.025GlnSer: 2.025 ± 0.046
1.686GlnThr: 1.686 ± 0.046
2.973GlnVal: 2.973 ± 0.051
0.597GlnTrp: 0.597 ± 0.023
0.848GlnTyr: 0.848 ± 0.03
0.0GlnXaa: 0.0 ± 0.0
Arg
7.814ArgAla: 7.814 ± 0.111
0.599ArgCys: 0.599 ± 0.025
4.099ArgAsp: 4.099 ± 0.059
4.308ArgGlu: 4.308 ± 0.077
2.629ArgPhe: 2.629 ± 0.042
4.981ArgGly: 4.981 ± 0.073
2.295ArgHis: 2.295 ± 0.047
3.662ArgIle: 3.662 ± 0.062
2.119ArgLys: 2.119 ± 0.046
8.162ArgLeu: 8.162 ± 0.124
1.824ArgMet: 1.824 ± 0.043
1.802ArgAsn: 1.802 ± 0.042
3.27ArgPro: 3.27 ± 0.058
3.084ArgGln: 3.084 ± 0.057
5.787ArgArg: 5.787 ± 0.101
3.643ArgSer: 3.643 ± 0.062
3.037ArgThr: 3.037 ± 0.052
4.924ArgVal: 4.924 ± 0.082
1.349ArgTrp: 1.349 ± 0.036
2.204ArgTyr: 2.204 ± 0.05
0.0ArgXaa: 0.0 ± 0.0
Ser
6.472SerAla: 6.472 ± 0.091
0.434SerCys: 0.434 ± 0.021
2.925SerAsp: 2.925 ± 0.054
2.381SerGlu: 2.381 ± 0.043
2.06SerPhe: 2.06 ± 0.043
5.436SerGly: 5.436 ± 0.081
1.413SerHis: 1.413 ± 0.038
2.448SerIle: 2.448 ± 0.055
1.476SerLys: 1.476 ± 0.04
5.804SerLeu: 5.804 ± 0.088
1.365SerMet: 1.365 ± 0.029
1.487SerAsn: 1.487 ± 0.038
2.928SerPro: 2.928 ± 0.067
1.874SerGln: 1.874 ± 0.04
3.644SerArg: 3.644 ± 0.053
3.276SerSer: 3.276 ± 0.068
2.966SerThr: 2.966 ± 0.059
3.994SerVal: 3.994 ± 0.068
0.96SerTrp: 0.96 ± 0.035
1.538SerTyr: 1.538 ± 0.044
0.0SerXaa: 0.0 ± 0.0
Thr
5.751ThrAla: 5.751 ± 0.081
0.39ThrCys: 0.39 ± 0.017
2.677ThrAsp: 2.677 ± 0.051
2.037ThrGlu: 2.037 ± 0.04
1.679ThrPhe: 1.679 ± 0.043
4.514ThrGly: 4.514 ± 0.102
1.256ThrHis: 1.256 ± 0.034
2.12ThrIle: 2.12 ± 0.042
1.006ThrLys: 1.006 ± 0.036
6.189ThrLeu: 6.189 ± 0.085
0.997ThrMet: 0.997 ± 0.03
1.155ThrAsn: 1.155 ± 0.039
3.41ThrPro: 3.41 ± 0.066
1.681ThrGln: 1.681 ± 0.041
3.512ThrArg: 3.512 ± 0.063
2.681ThrSer: 2.681 ± 0.057
2.674ThrThr: 2.674 ± 0.077
3.833ThrVal: 3.833 ± 0.061
0.726ThrTrp: 0.726 ± 0.03
1.138ThrTyr: 1.138 ± 0.036
0.0ThrXaa: 0.0 ± 0.0
Val
9.19ValAla: 9.19 ± 0.112
0.657ValCys: 0.657 ± 0.027
4.499ValAsp: 4.499 ± 0.066
3.784ValGlu: 3.784 ± 0.076
2.506ValPhe: 2.506 ± 0.05
5.487ValGly: 5.487 ± 0.08
1.729ValHis: 1.729 ± 0.043
3.553ValIle: 3.553 ± 0.063
1.917ValLys: 1.917 ± 0.04
8.381ValLeu: 8.381 ± 0.103
1.65ValMet: 1.65 ± 0.038
2.062ValAsn: 2.062 ± 0.054
3.728ValPro: 3.728 ± 0.065
2.639ValGln: 2.639 ± 0.049
4.856ValArg: 4.856 ± 0.08
4.091ValSer: 4.091 ± 0.064
3.875ValThr: 3.875 ± 0.063
5.659ValVal: 5.659 ± 0.091
0.924ValTrp: 0.924 ± 0.03
1.683ValTyr: 1.683 ± 0.042
0.0ValXaa: 0.0 ± 0.0
Trp
1.331TrpAla: 1.331 ± 0.036
0.155TrpCys: 0.155 ± 0.011
0.705TrpAsp: 0.705 ± 0.027
0.469TrpGlu: 0.469 ± 0.023
0.642TrpPhe: 0.642 ± 0.026
0.915TrpGly: 0.915 ± 0.033
0.475TrpHis: 0.475 ± 0.02
0.752TrpIle: 0.752 ± 0.026
0.498TrpLys: 0.498 ± 0.024
2.297TrpLeu: 2.297 ± 0.057
0.438TrpMet: 0.438 ± 0.02
0.594TrpAsn: 0.594 ± 0.026
0.781TrpPro: 0.781 ± 0.029
0.939TrpGln: 0.939 ± 0.033
1.415TrpArg: 1.415 ± 0.042
1.015TrpSer: 1.015 ± 0.037
0.749TrpThr: 0.749 ± 0.024
0.932TrpVal: 0.932 ± 0.031
0.316TrpTrp: 0.316 ± 0.019
0.438TrpTyr: 0.438 ± 0.023
0.0TrpXaa: 0.0 ± 0.0
Tyr
3.102TyrAla: 3.102 ± 0.061
0.216TyrCys: 0.216 ± 0.014
1.505TyrAsp: 1.505 ± 0.045
1.109TyrGlu: 1.109 ± 0.033
1.011TyrPhe: 1.011 ± 0.034
2.282TyrGly: 2.282 ± 0.045
0.607TyrHis: 0.607 ± 0.025
0.831TyrIle: 0.831 ± 0.026
0.642TyrLys: 0.642 ± 0.026
2.775TyrLeu: 2.775 ± 0.056
0.429TyrMet: 0.429 ± 0.022
0.746TyrAsn: 0.746 ± 0.035
1.264TyrPro: 1.264 ± 0.037
1.014TyrGln: 1.014 ± 0.032
2.112TyrArg: 2.112 ± 0.048
1.349TyrSer: 1.349 ± 0.038
1.274TyrThr: 1.274 ± 0.039
1.881TyrVal: 1.881 ± 0.046
0.436TyrTrp: 0.436 ± 0.019
0.779TyrTyr: 0.779 ± 0.029
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 3234 proteins (1122722 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