Amino acid dipepetide frequency for Deinococcus radiodurans (strain ATCC 13939 / DSM 20539 / JCM 16871 / LMG 4051 / NBRC 15346 / NCIMB 9279 / R1 / VKM B-1422)

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
17.345AlaAla: 17.345 ± 0.184
0.873AlaCys: 0.873 ± 0.033
5.847AlaAsp: 5.847 ± 0.083
7.418AlaGlu: 7.418 ± 0.112
3.73AlaPhe: 3.73 ± 0.073
11.712AlaGly: 11.712 ± 0.128
2.532AlaHis: 2.532 ± 0.053
3.218AlaIle: 3.218 ± 0.062
2.645AlaLys: 2.645 ± 0.066
15.681AlaLeu: 15.681 ± 0.177
2.045AlaMet: 2.045 ± 0.053
2.171AlaAsn: 2.171 ± 0.058
7.1AlaPro: 7.1 ± 0.139
6.276AlaGln: 6.276 ± 0.107
9.407AlaArg: 9.407 ± 0.107
5.622AlaSer: 5.622 ± 0.079
5.461AlaThr: 5.461 ± 0.09
8.601AlaVal: 8.601 ± 0.112
1.604AlaTrp: 1.604 ± 0.046
2.754AlaTyr: 2.754 ± 0.057
0.004AlaXaa: 0.004 ± 0.002
Cys
0.788CysAla: 0.788 ± 0.03
0.114CysCys: 0.114 ± 0.011
0.349CysAsp: 0.349 ± 0.018
0.268CysGlu: 0.268 ± 0.018
0.195CysPhe: 0.195 ± 0.013
0.804CysGly: 0.804 ± 0.029
0.169CysHis: 0.169 ± 0.015
0.178CysIle: 0.178 ± 0.014
0.123CysLys: 0.123 ± 0.014
0.614CysLeu: 0.614 ± 0.029
0.105CysMet: 0.105 ± 0.01
0.154CysAsn: 0.154 ± 0.014
0.565CysPro: 0.565 ± 0.031
0.217CysGln: 0.217 ± 0.016
0.501CysArg: 0.501 ± 0.024
0.419CysSer: 0.419 ± 0.021
0.423CysThr: 0.423 ± 0.023
0.448CysVal: 0.448 ± 0.021
0.107CysTrp: 0.107 ± 0.011
0.137CysTyr: 0.137 ± 0.011
0.001CysXaa: 0.001 ± 0.001
Asp
6.449AspAla: 6.449 ± 0.086
0.255AspCys: 0.255 ± 0.015
2.522AspAsp: 2.522 ± 0.052
3.226AspGlu: 3.226 ± 0.06
1.973AspPhe: 1.973 ± 0.051
4.312AspGly: 4.312 ± 0.078
1.051AspHis: 1.051 ± 0.033
1.897AspIle: 1.897 ± 0.046
1.239AspLys: 1.239 ± 0.042
6.589AspLeu: 6.589 ± 0.107
0.935AspMet: 0.935 ± 0.033
1.0AspAsn: 1.0 ± 0.033
3.535AspPro: 3.535 ± 0.07
1.449AspGln: 1.449 ± 0.036
3.064AspArg: 3.064 ± 0.064
2.079AspSer: 2.079 ± 0.056
2.748AspThr: 2.748 ± 0.055
4.244AspVal: 4.244 ± 0.071
0.88AspTrp: 0.88 ± 0.029
1.237AspTyr: 1.237 ± 0.04
0.002AspXaa: 0.002 ± 0.001
Glu
6.902GluAla: 6.902 ± 0.101
0.289GluCys: 0.289 ± 0.018
2.684GluAsp: 2.684 ± 0.062
3.172GluGlu: 3.172 ± 0.067
1.688GluPhe: 1.688 ± 0.04
4.677GluGly: 4.677 ± 0.078
1.38GluHis: 1.38 ± 0.039
2.019GluIle: 2.019 ± 0.046
1.876GluLys: 1.876 ± 0.052
7.061GluLeu: 7.061 ± 0.105
1.112GluMet: 1.112 ± 0.04
1.377GluAsn: 1.377 ± 0.042
2.379GluPro: 2.379 ± 0.06
3.112GluGln: 3.112 ± 0.068
5.413GluArg: 5.413 ± 0.089
2.227GluSer: 2.227 ± 0.046
2.837GluThr: 2.837 ± 0.065
4.893GluVal: 4.893 ± 0.075
0.837GluTrp: 0.837 ± 0.03
1.377GluTyr: 1.377 ± 0.039
0.002GluXaa: 0.002 ± 0.001
Phe
3.668PheAla: 3.668 ± 0.076
0.27PheCys: 0.27 ± 0.02
1.954PheAsp: 1.954 ± 0.051
1.728PheGlu: 1.728 ± 0.043
1.059PhePhe: 1.059 ± 0.04
3.192PheGly: 3.192 ± 0.065
0.613PheHis: 0.613 ± 0.028
1.199PheIle: 1.199 ± 0.041
0.864PheLys: 0.864 ± 0.032
3.154PheLeu: 3.154 ± 0.074
0.682PheMet: 0.682 ± 0.028
0.831PheAsn: 0.831 ± 0.027
1.786PhePro: 1.786 ± 0.037
1.056PheGln: 1.056 ± 0.035
1.941PheArg: 1.941 ± 0.049
1.96PheSer: 1.96 ± 0.052
1.936PheThr: 1.936 ± 0.051
2.4PheVal: 2.4 ± 0.058
0.46PheTrp: 0.46 ± 0.022
0.807PheTyr: 0.807 ± 0.03
0.001PheXaa: 0.001 ± 0.001
Gly
10.001GlyAla: 10.001 ± 0.136
0.633GlyCys: 0.633 ± 0.029
4.255GlyAsp: 4.255 ± 0.071
6.097GlyGlu: 6.097 ± 0.095
2.973GlyPhe: 2.973 ± 0.06
8.707GlyGly: 8.707 ± 0.143
2.003GlyHis: 2.003 ± 0.049
3.157GlyIle: 3.157 ± 0.064
3.266GlyLys: 3.266 ± 0.063
10.285GlyLeu: 10.285 ± 0.132
2.027GlyMet: 2.027 ± 0.055
2.24GlyAsn: 2.24 ± 0.052
3.76GlyPro: 3.76 ± 0.061
4.607GlyGln: 4.607 ± 0.079
6.436GlyArg: 6.436 ± 0.092
4.739GlySer: 4.739 ± 0.081
5.437GlyThr: 5.437 ± 0.099
7.532GlyVal: 7.532 ± 0.091
1.559GlyTrp: 1.559 ± 0.043
2.268GlyTyr: 2.268 ± 0.055
0.002GlyXaa: 0.002 ± 0.002
His
2.487HisAla: 2.487 ± 0.066
0.182HisCys: 0.182 ± 0.015
1.211HisAsp: 1.211 ± 0.035
1.127HisGlu: 1.127 ± 0.037
0.783HisPhe: 0.783 ± 0.029
1.872HisGly: 1.872 ± 0.048
0.628HisHis: 0.628 ± 0.029
0.675HisIle: 0.675 ± 0.025
0.406HisLys: 0.406 ± 0.021
2.597HisLeu: 2.597 ± 0.058
0.351HisMet: 0.351 ± 0.018
0.423HisAsn: 0.423 ± 0.025
1.711HisPro: 1.711 ± 0.043
0.643HisGln: 0.643 ± 0.024
1.337HisArg: 1.337 ± 0.038
1.005HisSer: 1.005 ± 0.033
1.119HisThr: 1.119 ± 0.036
1.411HisVal: 1.411 ± 0.042
0.368HisTrp: 0.368 ± 0.022
0.519HisTyr: 0.519 ± 0.021
0.0HisXaa: 0.0 ± 0.0
Ile
3.838IleAla: 3.838 ± 0.07
0.219IleCys: 0.219 ± 0.017
1.762IleAsp: 1.762 ± 0.044
2.179IleGlu: 2.179 ± 0.051
1.074IlePhe: 1.074 ± 0.04
3.285IleGly: 3.285 ± 0.066
0.751IleHis: 0.751 ± 0.031
1.228IleIle: 1.228 ± 0.042
0.967IleLys: 0.967 ± 0.033
3.062IleLeu: 3.062 ± 0.062
0.541IleMet: 0.541 ± 0.027
0.958IleAsn: 0.958 ± 0.03
1.906IlePro: 1.906 ± 0.05
1.069IleGln: 1.069 ± 0.031
2.348IleArg: 2.348 ± 0.049
1.807IleSer: 1.807 ± 0.041
1.96IleThr: 1.96 ± 0.053
2.727IleVal: 2.727 ± 0.063
0.326IleTrp: 0.326 ± 0.02
0.83IleTyr: 0.83 ± 0.031
0.0IleXaa: 0.0 ± 0.0
Lys
3.179LysAla: 3.179 ± 0.068
0.149LysCys: 0.149 ± 0.013
1.37LysAsp: 1.37 ± 0.043
1.295LysGlu: 1.295 ± 0.04
0.849LysPhe: 0.849 ± 0.033
2.07LysGly: 2.07 ± 0.054
0.492LysHis: 0.492 ± 0.026
1.0LysIle: 1.0 ± 0.037
1.231LysLys: 1.231 ± 0.042
3.01LysLeu: 3.01 ± 0.067
0.747LysMet: 0.747 ± 0.032
0.857LysAsn: 0.857 ± 0.032
1.606LysPro: 1.606 ± 0.043
0.964LysGln: 0.964 ± 0.036
1.798LysArg: 1.798 ± 0.051
1.32LysSer: 1.32 ± 0.039
1.813LysThr: 1.813 ± 0.047
2.382LysVal: 2.382 ± 0.059
0.326LysTrp: 0.326 ± 0.018
0.708LysTyr: 0.708 ± 0.034
0.002LysXaa: 0.002 ± 0.001
Leu
14.473LeuAla: 14.473 ± 0.167
0.746LeuCys: 0.746 ± 0.033
6.205LeuAsp: 6.205 ± 0.087
5.773LeuGlu: 5.773 ± 0.09
2.905LeuPhe: 2.905 ± 0.067
11.062LeuGly: 11.062 ± 0.149
2.442LeuHis: 2.442 ± 0.056
3.911LeuIle: 3.911 ± 0.082
3.135LeuLys: 3.135 ± 0.068
13.867LeuLeu: 13.867 ± 0.216
2.034LeuMet: 2.034 ± 0.045
3.07LeuAsn: 3.07 ± 0.052
7.784LeuPro: 7.784 ± 0.115
3.444LeuGln: 3.444 ± 0.073
9.154LeuArg: 9.154 ± 0.126
7.64LeuSer: 7.64 ± 0.114
7.994LeuThr: 7.994 ± 0.108
7.07LeuVal: 7.07 ± 0.116
1.455LeuTrp: 1.455 ± 0.042
2.341LeuTyr: 2.341 ± 0.052
0.002LeuXaa: 0.002 ± 0.002
Met
1.717MetAla: 1.717 ± 0.048
0.116MetCys: 0.116 ± 0.01
0.839MetAsp: 0.839 ± 0.03
0.79MetGlu: 0.79 ± 0.03
0.572MetPhe: 0.572 ± 0.023
1.554MetGly: 1.554 ± 0.05
0.353MetHis: 0.353 ± 0.021
0.667MetIle: 0.667 ± 0.03
0.789MetLys: 0.789 ± 0.031
2.05MetLeu: 2.05 ± 0.053
0.398MetMet: 0.398 ± 0.023
0.734MetAsn: 0.734 ± 0.031
1.237MetPro: 1.237 ± 0.046
0.766MetGln: 0.766 ± 0.027
1.355MetArg: 1.355 ± 0.037
1.34MetSer: 1.34 ± 0.039
1.916MetThr: 1.916 ± 0.046
1.192MetVal: 1.192 ± 0.037
0.183MetTrp: 0.183 ± 0.014
0.348MetTyr: 0.348 ± 0.018
0.0MetXaa: 0.0 ± 0.0
Asn
2.95AsnAla: 2.95 ± 0.059
0.17AsnCys: 0.17 ± 0.014
1.137AsnAsp: 1.137 ± 0.037
1.047AsnGlu: 1.047 ± 0.034
0.913AsnPhe: 0.913 ± 0.03
2.051AsnGly: 2.051 ± 0.054
0.454AsnHis: 0.454 ± 0.022
1.026AsnIle: 1.026 ± 0.034
0.714AsnLys: 0.714 ± 0.032
2.746AsnLeu: 2.746 ± 0.056
0.499AsnMet: 0.499 ± 0.025
0.658AsnAsn: 0.658 ± 0.032
1.84AsnPro: 1.84 ± 0.053
0.672AsnGln: 0.672 ± 0.029
1.475AsnArg: 1.475 ± 0.04
1.121AsnSer: 1.121 ± 0.037
1.365AsnThr: 1.365 ± 0.041
2.226AsnVal: 2.226 ± 0.051
0.332AsnTrp: 0.332 ± 0.02
0.671AsnTyr: 0.671 ± 0.027
0.003AsnXaa: 0.003 ± 0.002
Pro
8.423ProAla: 8.423 ± 0.143
0.39ProCys: 0.39 ± 0.025
3.85ProAsp: 3.85 ± 0.067
4.578ProGlu: 4.578 ± 0.076
1.804ProPhe: 1.804 ± 0.042
5.9ProGly: 5.9 ± 0.091
1.326ProHis: 1.326 ± 0.039
1.525ProIle: 1.525 ± 0.042
1.271ProLys: 1.271 ± 0.04
6.567ProLeu: 6.567 ± 0.093
1.05ProMet: 1.05 ± 0.035
1.315ProAsn: 1.315 ± 0.039
3.407ProPro: 3.407 ± 0.084
2.674ProGln: 2.674 ± 0.062
3.662ProArg: 3.662 ± 0.066
2.932ProSer: 2.932 ± 0.06
3.254ProThr: 3.254 ± 0.065
4.514ProVal: 4.514 ± 0.078
0.744ProTrp: 0.744 ± 0.029
1.306ProTyr: 1.306 ± 0.036
0.002ProXaa: 0.002 ± 0.001
Gln
5.624GlnAla: 5.624 ± 0.1
0.19GlnCys: 0.19 ± 0.014
1.937GlnAsp: 1.937 ± 0.045
2.144GlnGlu: 2.144 ± 0.05
1.125GlnPhe: 1.125 ± 0.036
3.864GlnGly: 3.864 ± 0.071
0.847GlnHis: 0.847 ± 0.032
1.318GlnIle: 1.318 ± 0.037
1.231GlnLys: 1.231 ± 0.04
4.359GlnLeu: 4.359 ± 0.1
0.797GlnMet: 0.797 ± 0.033
1.098GlnAsn: 1.098 ± 0.032
2.565GlnPro: 2.565 ± 0.056
1.972GlnGln: 1.972 ± 0.06
2.93GlnArg: 2.93 ± 0.064
1.932GlnSer: 1.932 ± 0.048
2.544GlnThr: 2.544 ± 0.062
3.536GlnVal: 3.536 ± 0.062
0.462GlnTrp: 0.462 ± 0.021
0.705GlnTyr: 0.705 ± 0.027
0.001GlnXaa: 0.001 ± 0.001
Arg
8.726ArgAla: 8.726 ± 0.101
0.477ArgCys: 0.477 ± 0.024
3.796ArgAsp: 3.796 ± 0.066
5.364ArgGlu: 5.364 ± 0.079
2.326ArgPhe: 2.326 ± 0.044
5.992ArgGly: 5.992 ± 0.076
1.487ArgHis: 1.487 ± 0.044
2.353ArgIle: 2.353 ± 0.055
1.72ArgLys: 1.72 ± 0.049
8.344ArgLeu: 8.344 ± 0.111
1.513ArgMet: 1.513 ± 0.043
1.427ArgAsn: 1.427 ± 0.038
4.464ArgPro: 4.464 ± 0.077
3.208ArgGln: 3.208 ± 0.066
6.166ArgArg: 6.166 ± 0.101
3.577ArgSer: 3.577 ± 0.067
3.871ArgThr: 3.871 ± 0.065
6.034ArgVal: 6.034 ± 0.08
1.208ArgTrp: 1.208 ± 0.034
1.697ArgTyr: 1.697 ± 0.043
0.002ArgXaa: 0.002 ± 0.001
Ser
6.387SerAla: 6.387 ± 0.101
0.407SerCys: 0.407 ± 0.023
2.581SerAsp: 2.581 ± 0.049
2.764SerGlu: 2.764 ± 0.061
1.81SerPhe: 1.81 ± 0.043
6.121SerGly: 6.121 ± 0.105
0.961SerHis: 0.961 ± 0.031
1.643SerIle: 1.643 ± 0.048
1.286SerLys: 1.286 ± 0.038
5.475SerLeu: 5.475 ± 0.084
1.029SerMet: 1.029 ± 0.032
1.19SerAsn: 1.19 ± 0.034
3.353SerPro: 3.353 ± 0.062
1.757SerGln: 1.757 ± 0.043
3.571SerArg: 3.571 ± 0.067
3.066SerSer: 3.066 ± 0.068
2.679SerThr: 2.679 ± 0.062
4.007SerVal: 4.007 ± 0.064
0.644SerTrp: 0.644 ± 0.026
1.265SerTyr: 1.265 ± 0.036
0.001SerXaa: 0.001 ± 0.001
Thr
6.543ThrAla: 6.543 ± 0.097
0.413ThrCys: 0.413 ± 0.023
2.83ThrAsp: 2.83 ± 0.059
2.796ThrGlu: 2.796 ± 0.055
2.202ThrPhe: 2.202 ± 0.051
5.256ThrGly: 5.256 ± 0.08
1.149ThrHis: 1.149 ± 0.04
1.744ThrIle: 1.744 ± 0.049
1.091ThrLys: 1.091 ± 0.038
7.939ThrLeu: 7.939 ± 0.103
0.827ThrMet: 0.827 ± 0.029
1.268ThrAsn: 1.268 ± 0.044
4.849ThrPro: 4.849 ± 0.089
2.045ThrGln: 2.045 ± 0.054
3.964ThrArg: 3.964 ± 0.065
2.817ThrSer: 2.817 ± 0.059
3.102ThrThr: 3.102 ± 0.092
5.07ThrVal: 5.07 ± 0.081
0.748ThrTrp: 0.748 ± 0.027
1.49ThrTyr: 1.49 ± 0.042
0.003ThrXaa: 0.003 ± 0.002
Val
8.068ValAla: 8.068 ± 0.093
0.518ValCys: 0.518 ± 0.022
3.502ValAsp: 3.502 ± 0.069
3.711ValGlu: 3.711 ± 0.067
2.355ValPhe: 2.355 ± 0.057
6.15ValGly: 6.15 ± 0.089
1.39ValHis: 1.39 ± 0.036
3.124ValIle: 3.124 ± 0.056
2.418ValLys: 2.418 ± 0.057
8.83ValLeu: 8.83 ± 0.128
1.651ValMet: 1.651 ± 0.043
2.235ValAsn: 2.235 ± 0.055
4.555ValPro: 4.555 ± 0.072
3.549ValGln: 3.549 ± 0.059
6.06ValArg: 6.06 ± 0.095
4.523ValSer: 4.523 ± 0.085
5.508ValThr: 5.508 ± 0.085
5.885ValVal: 5.885 ± 0.086
1.058ValTrp: 1.058 ± 0.034
1.779ValTyr: 1.779 ± 0.047
0.002ValXaa: 0.002 ± 0.001
Trp
1.499TrpAla: 1.499 ± 0.039
0.098TrpCys: 0.098 ± 0.01
0.727TrpAsp: 0.727 ± 0.029
0.668TrpGlu: 0.668 ± 0.027
0.393TrpPhe: 0.393 ± 0.022
1.116TrpGly: 1.116 ± 0.033
0.312TrpHis: 0.312 ± 0.017
0.346TrpIle: 0.346 ± 0.02
0.359TrpLys: 0.359 ± 0.021
1.796TrpLeu: 1.796 ± 0.047
0.274TrpMet: 0.274 ± 0.018
0.487TrpAsn: 0.487 ± 0.028
0.826TrpPro: 0.826 ± 0.03
0.791TrpGln: 0.791 ± 0.025
1.166TrpArg: 1.166 ± 0.036
0.658TrpSer: 0.658 ± 0.03
0.856TrpThr: 0.856 ± 0.03
1.005TrpVal: 1.005 ± 0.029
0.265TrpTrp: 0.265 ± 0.02
0.24TrpTyr: 0.24 ± 0.018
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.975TyrAla: 2.975 ± 0.062
0.172TyrCys: 0.172 ± 0.013
1.327TyrAsp: 1.327 ± 0.036
1.169TyrGlu: 1.169 ± 0.03
0.828TyrPhe: 0.828 ± 0.032
2.283TyrGly: 2.283 ± 0.059
0.514TyrHis: 0.514 ± 0.023
0.608TyrIle: 0.608 ± 0.028
0.534TyrLys: 0.534 ± 0.024
2.477TyrLeu: 2.477 ± 0.057
0.296TyrMet: 0.296 ± 0.017
0.577TyrAsn: 0.577 ± 0.023
1.265TyrPro: 1.265 ± 0.037
0.912TyrGln: 0.912 ± 0.034
2.005TyrArg: 2.005 ± 0.047
1.209TyrSer: 1.209 ± 0.039
1.32TyrThr: 1.32 ± 0.04
1.692TyrVal: 1.692 ± 0.042
0.315TyrTrp: 0.315 ± 0.02
0.55TyrTyr: 0.55 ± 0.024
0.0TyrXaa: 0.0 ± 0.0
Xaa
0.006XaaAla: 0.006 ± 0.002
0.0XaaCys: 0.0 ± 0.0
0.001XaaAsp: 0.001 ± 0.001
0.001XaaGlu: 0.001 ± 0.001
0.002XaaPhe: 0.002 ± 0.002
0.004XaaGly: 0.004 ± 0.002
0.0XaaHis: 0.0 ± 0.0
0.0XaaIle: 0.0 ± 0.0
0.001XaaLys: 0.001 ± 0.001
0.003XaaLeu: 0.003 ± 0.002
0.0XaaMet: 0.0 ± 0.0
0.0XaaAsn: 0.0 ± 0.0
0.003XaaPro: 0.003 ± 0.002
0.0XaaGln: 0.0 ± 0.0
0.001XaaArg: 0.001 ± 0.001
0.002XaaSer: 0.002 ± 0.001
0.002XaaThr: 0.002 ± 0.002
0.003XaaVal: 0.003 ± 0.002
0.001XaaTrp: 0.001 ± 0.001
0.0XaaTyr: 0.0 ± 0.0
0.002XaaXaa: 0.002 ± 0.001
Statistics based on 3085 proteins (949308 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