Amino acid dipepetide frequency for Mitsuaria sp. PDC51

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
20.329AlaAla: 20.329 ± 0.169
1.171AlaCys: 1.171 ± 0.029
6.764AlaAsp: 6.764 ± 0.062
6.826AlaGlu: 6.826 ± 0.079
3.912AlaPhe: 3.912 ± 0.048
11.391AlaGly: 11.391 ± 0.109
2.636AlaHis: 2.636 ± 0.043
4.975AlaIle: 4.975 ± 0.06
3.659AlaLys: 3.659 ± 0.072
16.73AlaLeu: 16.73 ± 0.185
3.676AlaMet: 3.676 ± 0.049
2.65AlaAsn: 2.65 ± 0.044
7.601AlaPro: 7.601 ± 0.095
5.982AlaGln: 5.982 ± 0.072
10.135AlaArg: 10.135 ± 0.091
7.362AlaSer: 7.362 ± 0.082
6.616AlaThr: 6.616 ± 0.073
9.093AlaVal: 9.093 ± 0.091
2.193AlaTrp: 2.193 ± 0.04
2.346AlaTyr: 2.346 ± 0.044
0.0AlaXaa: 0.0 ± 0.0
Cys
1.073CysAla: 1.073 ± 0.032
0.094CysCys: 0.094 ± 0.007
0.489CysAsp: 0.489 ± 0.018
0.469CysGlu: 0.469 ± 0.016
0.268CysPhe: 0.268 ± 0.013
0.881CysGly: 0.881 ± 0.026
0.2CysHis: 0.2 ± 0.011
0.295CysIle: 0.295 ± 0.014
0.174CysLys: 0.174 ± 0.01
0.756CysLeu: 0.756 ± 0.02
0.145CysMet: 0.145 ± 0.009
0.187CysAsn: 0.187 ± 0.011
0.429CysPro: 0.429 ± 0.017
0.226CysGln: 0.226 ± 0.011
0.536CysArg: 0.536 ± 0.018
0.42CysSer: 0.42 ± 0.014
0.38CysThr: 0.38 ± 0.017
0.608CysVal: 0.608 ± 0.02
0.127CysTrp: 0.127 ± 0.009
0.171CysTyr: 0.171 ± 0.009
0.0CysXaa: 0.0 ± 0.0
Asp
8.006AspAla: 8.006 ± 0.068
0.408AspCys: 0.408 ± 0.015
3.018AspAsp: 3.018 ± 0.049
3.509AspGlu: 3.509 ± 0.057
2.038AspPhe: 2.038 ± 0.043
5.529AspGly: 5.529 ± 0.069
1.179AspHis: 1.179 ± 0.025
2.039AspIle: 2.039 ± 0.032
1.528AspLys: 1.528 ± 0.033
5.8AspLeu: 5.8 ± 0.069
0.996AspMet: 0.996 ± 0.028
1.149AspAsn: 1.149 ± 0.038
3.38AspPro: 3.38 ± 0.052
1.93AspGln: 1.93 ± 0.046
4.057AspArg: 4.057 ± 0.058
2.164AspSer: 2.164 ± 0.033
2.472AspThr: 2.472 ± 0.044
3.668AspVal: 3.668 ± 0.047
1.116AspTrp: 1.116 ± 0.029
1.289AspTyr: 1.289 ± 0.029
0.0AspXaa: 0.0 ± 0.0
Glu
7.331GluAla: 7.331 ± 0.083
0.333GluCys: 0.333 ± 0.016
2.525GluAsp: 2.525 ± 0.044
2.403GluGlu: 2.403 ± 0.042
1.606GluPhe: 1.606 ± 0.033
3.8GluGly: 3.8 ± 0.055
1.253GluHis: 1.253 ± 0.03
2.408GluIle: 2.408 ± 0.038
1.386GluLys: 1.386 ± 0.029
6.254GluLeu: 6.254 ± 0.07
1.097GluMet: 1.097 ± 0.026
0.982GluAsn: 0.982 ± 0.023
2.699GluPro: 2.699 ± 0.047
2.619GluGln: 2.619 ± 0.04
5.214GluArg: 5.214 ± 0.075
2.393GluSer: 2.393 ± 0.042
2.383GluThr: 2.383 ± 0.037
3.94GluVal: 3.94 ± 0.046
0.725GluTrp: 0.725 ± 0.021
0.896GluTyr: 0.896 ± 0.028
0.0GluXaa: 0.0 ± 0.0
Phe
3.866PheAla: 3.866 ± 0.047
0.338PheCys: 0.338 ± 0.014
2.399PheAsp: 2.399 ± 0.037
1.985PheGlu: 1.985 ± 0.043
1.193PhePhe: 1.193 ± 0.031
3.134PheGly: 3.134 ± 0.047
0.714PheHis: 0.714 ± 0.023
1.286PheIle: 1.286 ± 0.032
1.074PheLys: 1.074 ± 0.025
2.734PheLeu: 2.734 ± 0.045
0.665PheMet: 0.665 ± 0.022
1.04PheAsn: 1.04 ± 0.025
1.413PhePro: 1.413 ± 0.029
1.081PheGln: 1.081 ± 0.023
1.89PheArg: 1.89 ± 0.035
2.005PheSer: 2.005 ± 0.034
1.702PheThr: 1.702 ± 0.036
2.44PheVal: 2.44 ± 0.037
0.491PheTrp: 0.491 ± 0.021
0.765PheTyr: 0.765 ± 0.022
0.0PheXaa: 0.0 ± 0.0
Gly
10.524GlyAla: 10.524 ± 0.097
0.796GlyCys: 0.796 ± 0.022
4.442GlyAsp: 4.442 ± 0.058
4.734GlyGlu: 4.734 ± 0.062
3.095GlyPhe: 3.095 ± 0.05
7.632GlyGly: 7.632 ± 0.114
1.998GlyHis: 1.998 ± 0.037
3.27GlyIle: 3.27 ± 0.048
2.766GlyLys: 2.766 ± 0.047
9.664GlyLeu: 9.664 ± 0.087
2.037GlyMet: 2.037 ± 0.038
2.019GlyAsn: 2.019 ± 0.047
3.617GlyPro: 3.617 ± 0.051
3.636GlyGln: 3.636 ± 0.05
6.4GlyArg: 6.4 ± 0.069
4.511GlySer: 4.511 ± 0.067
4.442GlyThr: 4.442 ± 0.065
6.4GlyVal: 6.4 ± 0.053
1.593GlyTrp: 1.593 ± 0.031
2.129GlyTyr: 2.129 ± 0.038
0.0GlyXaa: 0.0 ± 0.0
His
2.863HisAla: 2.863 ± 0.044
0.228HisCys: 0.228 ± 0.012
1.176HisAsp: 1.176 ± 0.028
1.206HisGlu: 1.206 ± 0.029
0.793HisPhe: 0.793 ± 0.024
2.132HisGly: 2.132 ± 0.039
0.627HisHis: 0.627 ± 0.022
0.66HisIle: 0.66 ± 0.022
0.474HisLys: 0.474 ± 0.018
2.294HisLeu: 2.294 ± 0.043
0.379HisMet: 0.379 ± 0.015
0.393HisAsn: 0.393 ± 0.013
1.489HisPro: 1.489 ± 0.029
0.782HisGln: 0.782 ± 0.025
1.683HisArg: 1.683 ± 0.032
0.885HisSer: 0.885 ± 0.023
0.879HisThr: 0.879 ± 0.022
1.491HisVal: 1.491 ± 0.031
0.444HisTrp: 0.444 ± 0.016
0.577HisTyr: 0.577 ± 0.017
0.0HisXaa: 0.0 ± 0.0
Ile
5.924IleAla: 5.924 ± 0.059
0.309IleCys: 0.309 ± 0.014
2.948IleAsp: 2.948 ± 0.044
2.779IleGlu: 2.779 ± 0.045
0.923IlePhe: 0.923 ± 0.023
3.807IleGly: 3.807 ± 0.049
0.758IleHis: 0.758 ± 0.022
0.984IleIle: 0.984 ± 0.028
1.255IleLys: 1.255 ± 0.03
2.654IleLeu: 2.654 ± 0.047
0.52IleMet: 0.52 ± 0.015
1.168IleAsn: 1.168 ± 0.03
1.813IlePro: 1.813 ± 0.036
1.197IleGln: 1.197 ± 0.029
2.318IleArg: 2.318 ± 0.038
2.01IleSer: 2.01 ± 0.036
2.085IleThr: 2.085 ± 0.043
3.092IleVal: 3.092 ± 0.042
0.435IleTrp: 0.435 ± 0.015
0.749IleTyr: 0.749 ± 0.024
0.0IleXaa: 0.0 ± 0.0
Lys
3.786LysAla: 3.786 ± 0.07
0.132LysCys: 0.132 ± 0.009
1.644LysAsp: 1.644 ± 0.033
1.273LysGlu: 1.273 ± 0.033
0.777LysPhe: 0.777 ± 0.021
2.21LysGly: 2.21 ± 0.043
0.552LysHis: 0.552 ± 0.017
1.055LysIle: 1.055 ± 0.028
1.037LysLys: 1.037 ± 0.035
3.116LysLeu: 3.116 ± 0.048
0.563LysMet: 0.563 ± 0.021
0.725LysAsn: 0.725 ± 0.025
2.007LysPro: 2.007 ± 0.042
1.154LysGln: 1.154 ± 0.028
2.141LysArg: 2.141 ± 0.035
1.502LysSer: 1.502 ± 0.037
1.679LysThr: 1.679 ± 0.038
2.116LysVal: 2.116 ± 0.04
0.294LysTrp: 0.294 ± 0.014
0.53LysTyr: 0.53 ± 0.02
0.0LysXaa: 0.0 ± 0.0
Leu
15.417LeuAla: 15.417 ± 0.13
0.895LeuCys: 0.895 ± 0.025
6.445LeuAsp: 6.445 ± 0.064
5.09LeuGlu: 5.09 ± 0.059
3.174LeuPhe: 3.174 ± 0.046
9.093LeuGly: 9.093 ± 0.088
2.295LeuHis: 2.295 ± 0.034
4.213LeuIle: 4.213 ± 0.051
3.547LeuLys: 3.547 ± 0.063
11.694LeuLeu: 11.694 ± 0.128
2.695LeuMet: 2.695 ± 0.047
2.65LeuAsn: 2.65 ± 0.046
6.67LeuPro: 6.67 ± 0.077
4.224LeuGln: 4.224 ± 0.052
9.125LeuArg: 9.125 ± 0.097
6.777LeuSer: 6.777 ± 0.076
5.715LeuThr: 5.715 ± 0.088
7.766LeuVal: 7.766 ± 0.081
1.501LeuTrp: 1.501 ± 0.034
1.928LeuTyr: 1.928 ± 0.038
0.0LeuXaa: 0.0 ± 0.0
Met
2.965MetAla: 2.965 ± 0.042
0.128MetCys: 0.128 ± 0.008
1.169MetAsp: 1.169 ± 0.031
0.904MetGlu: 0.904 ± 0.022
0.617MetPhe: 0.617 ± 0.021
1.674MetGly: 1.674 ± 0.033
0.467MetHis: 0.467 ± 0.017
0.805MetIle: 0.805 ± 0.022
0.867MetLys: 0.867 ± 0.024
2.441MetLeu: 2.441 ± 0.046
0.467MetMet: 0.467 ± 0.018
0.775MetAsn: 0.775 ± 0.021
1.436MetPro: 1.436 ± 0.028
0.909MetGln: 0.909 ± 0.024
1.822MetArg: 1.822 ± 0.035
1.732MetSer: 1.732 ± 0.028
1.601MetThr: 1.601 ± 0.031
1.491MetVal: 1.491 ± 0.034
0.207MetTrp: 0.207 ± 0.01
0.321MetTyr: 0.321 ± 0.016
0.0MetXaa: 0.0 ± 0.0
Asn
3.184AsnAla: 3.184 ± 0.057
0.212AsnCys: 0.212 ± 0.011
1.272AsnAsp: 1.272 ± 0.027
1.146AsnGlu: 1.146 ± 0.029
0.819AsnPhe: 0.819 ± 0.023
2.236AsnGly: 2.236 ± 0.045
0.44AsnHis: 0.44 ± 0.015
0.909AsnIle: 0.909 ± 0.025
0.634AsnLys: 0.634 ± 0.022
2.302AsnLeu: 2.302 ± 0.044
0.459AsnMet: 0.459 ± 0.015
0.679AsnAsn: 0.679 ± 0.025
1.543AsnPro: 1.543 ± 0.036
0.822AsnGln: 0.822 ± 0.025
1.5AsnArg: 1.5 ± 0.033
1.035AsnSer: 1.035 ± 0.035
1.261AsnThr: 1.261 ± 0.033
1.668AsnVal: 1.668 ± 0.037
0.351AsnTrp: 0.351 ± 0.016
0.605AsnTyr: 0.605 ± 0.024
0.0AsnXaa: 0.0 ± 0.0
Pro
8.377ProAla: 8.377 ± 0.086
0.33ProCys: 0.33 ± 0.014
3.533ProAsp: 3.533 ± 0.051
3.372ProGlu: 3.372 ± 0.05
1.649ProPhe: 1.649 ± 0.034
5.17ProGly: 5.17 ± 0.06
1.086ProHis: 1.086 ± 0.029
1.736ProIle: 1.736 ± 0.037
1.45ProLys: 1.45 ± 0.036
5.804ProLeu: 5.804 ± 0.065
1.384ProMet: 1.384 ± 0.033
1.128ProAsn: 1.128 ± 0.031
3.319ProPro: 3.319 ± 0.064
2.148ProGln: 2.148 ± 0.036
3.695ProArg: 3.695 ± 0.057
3.21ProSer: 3.21 ± 0.049
2.798ProThr: 2.798 ± 0.042
4.429ProVal: 4.429 ± 0.063
0.85ProTrp: 0.85 ± 0.022
1.055ProTyr: 1.055 ± 0.024
0.0ProXaa: 0.0 ± 0.0
Gln
6.023GlnAla: 6.023 ± 0.069
0.235GlnCys: 0.235 ± 0.012
1.784GlnAsp: 1.784 ± 0.033
1.559GlnGlu: 1.559 ± 0.033
1.194GlnPhe: 1.194 ± 0.026
3.243GlnGly: 3.243 ± 0.047
0.814GlnHis: 0.814 ± 0.022
1.51GlnIle: 1.51 ± 0.048
0.854GlnLys: 0.854 ± 0.025
4.67GlnLeu: 4.67 ± 0.057
0.891GlnMet: 0.891 ± 0.021
0.681GlnAsn: 0.681 ± 0.022
2.36GlnPro: 2.36 ± 0.042
2.018GlnGln: 2.018 ± 0.051
3.745GlnArg: 3.745 ± 0.054
1.874GlnSer: 1.874 ± 0.033
1.835GlnThr: 1.835 ± 0.036
3.278GlnVal: 3.278 ± 0.089
0.674GlnTrp: 0.674 ± 0.022
0.749GlnTyr: 0.749 ± 0.023
0.0GlnXaa: 0.0 ± 0.0
Arg
9.192ArgAla: 9.192 ± 0.077
0.637ArgCys: 0.637 ± 0.018
4.213ArgAsp: 4.213 ± 0.05
4.663ArgGlu: 4.663 ± 0.058
2.97ArgPhe: 2.97 ± 0.041
5.323ArgGly: 5.323 ± 0.065
2.102ArgHis: 2.102 ± 0.042
3.332ArgIle: 3.332 ± 0.041
1.823ArgLys: 1.823 ± 0.035
9.233ArgLeu: 9.233 ± 0.1
1.954ArgMet: 1.954 ± 0.033
1.612ArgAsn: 1.612 ± 0.033
3.95ArgPro: 3.95 ± 0.058
3.342ArgGln: 3.342 ± 0.039
6.344ArgArg: 6.344 ± 0.082
3.571ArgSer: 3.571 ± 0.047
3.178ArgThr: 3.178 ± 0.044
5.48ArgVal: 5.48 ± 0.056
1.535ArgTrp: 1.535 ± 0.032
1.797ArgTyr: 1.797 ± 0.032
0.0ArgXaa: 0.0 ± 0.0
Ser
7.08SerAla: 7.08 ± 0.086
0.424SerCys: 0.424 ± 0.019
2.678SerAsp: 2.678 ± 0.048
2.319SerGlu: 2.319 ± 0.041
1.936SerPhe: 1.936 ± 0.034
5.282SerGly: 5.282 ± 0.072
1.068SerHis: 1.068 ± 0.023
2.05SerIle: 2.05 ± 0.041
1.376SerLys: 1.376 ± 0.031
5.769SerLeu: 5.769 ± 0.066
1.192SerMet: 1.192 ± 0.028
1.266SerAsn: 1.266 ± 0.029
3.266SerPro: 3.266 ± 0.046
1.853SerGln: 1.853 ± 0.032
3.654SerArg: 3.654 ± 0.047
3.191SerSer: 3.191 ± 0.064
3.181SerThr: 3.181 ± 0.069
3.712SerVal: 3.712 ± 0.049
0.789SerTrp: 0.789 ± 0.023
1.188SerTyr: 1.188 ± 0.03
0.0SerXaa: 0.0 ± 0.0
Thr
6.639ThrAla: 6.639 ± 0.076
0.339ThrCys: 0.339 ± 0.014
2.506ThrAsp: 2.506 ± 0.047
2.27ThrGlu: 2.27 ± 0.039
1.452ThrPhe: 1.452 ± 0.032
4.74ThrGly: 4.74 ± 0.063
1.006ThrHis: 1.006 ± 0.026
1.88ThrIle: 1.88 ± 0.034
1.166ThrLys: 1.166 ± 0.028
6.407ThrLeu: 6.407 ± 0.077
1.098ThrMet: 1.098 ± 0.026
1.11ThrAsn: 1.11 ± 0.032
3.749ThrPro: 3.749 ± 0.055
1.892ThrGln: 1.892 ± 0.041
3.562ThrArg: 3.562 ± 0.052
2.692ThrSer: 2.692 ± 0.05
2.976ThrThr: 2.976 ± 0.079
4.093ThrVal: 4.093 ± 0.056
0.678ThrTrp: 0.678 ± 0.021
0.95ThrTyr: 0.95 ± 0.028
0.0ThrXaa: 0.0 ± 0.0
Val
9.422ValAla: 9.422 ± 0.09
0.591ValCys: 0.591 ± 0.019
4.397ValAsp: 4.397 ± 0.061
4.108ValGlu: 4.108 ± 0.051
2.454ValPhe: 2.454 ± 0.043
5.502ValGly: 5.502 ± 0.058
1.473ValHis: 1.473 ± 0.03
3.028ValIle: 3.028 ± 0.042
2.222ValLys: 2.222 ± 0.04
8.235ValLeu: 8.235 ± 0.086
1.767ValMet: 1.767 ± 0.036
1.886ValAsn: 1.886 ± 0.038
3.964ValPro: 3.964 ± 0.053
2.629ValGln: 2.629 ± 0.042
5.143ValArg: 5.143 ± 0.056
4.029ValSer: 4.029 ± 0.051
3.965ValThr: 3.965 ± 0.062
5.831ValVal: 5.831 ± 0.074
0.997ValTrp: 0.997 ± 0.025
1.44ValTyr: 1.44 ± 0.03
0.0ValXaa: 0.0 ± 0.0
Trp
1.563TrpAla: 1.563 ± 0.032
0.145TrpCys: 0.145 ± 0.008
0.68TrpAsp: 0.68 ± 0.022
0.563TrpGlu: 0.563 ± 0.019
0.541TrpPhe: 0.541 ± 0.017
1.041TrpGly: 1.041 ± 0.025
0.385TrpHis: 0.385 ± 0.014
0.677TrpIle: 0.677 ± 0.02
0.427TrpLys: 0.427 ± 0.015
2.154TrpLeu: 2.154 ± 0.035
0.458TrpMet: 0.458 ± 0.015
0.441TrpAsn: 0.441 ± 0.019
0.831TrpPro: 0.831 ± 0.023
0.763TrpGln: 0.763 ± 0.02
1.521TrpArg: 1.521 ± 0.035
0.94TrpSer: 0.94 ± 0.027
0.93TrpThr: 0.93 ± 0.025
1.028TrpVal: 1.028 ± 0.027
0.33TrpTrp: 0.33 ± 0.014
0.287TrpTyr: 0.287 ± 0.015
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.484TyrAla: 2.484 ± 0.039
0.185TyrCys: 0.185 ± 0.01
1.191TyrAsp: 1.191 ± 0.036
1.071TyrGlu: 1.071 ± 0.025
0.805TyrPhe: 0.805 ± 0.023
1.883TyrGly: 1.883 ± 0.037
0.399TyrHis: 0.399 ± 0.014
0.616TyrIle: 0.616 ± 0.019
0.576TyrLys: 0.576 ± 0.02
2.203TyrLeu: 2.203 ± 0.037
0.358TyrMet: 0.358 ± 0.016
0.535TyrAsn: 0.535 ± 0.02
0.989TyrPro: 0.989 ± 0.026
0.783TyrGln: 0.783 ± 0.021
1.767TyrArg: 1.767 ± 0.031
0.972TyrSer: 0.972 ± 0.03
1.125TyrThr: 1.125 ± 0.027
1.457TyrVal: 1.457 ± 0.034
0.374TyrTrp: 0.374 ± 0.016
0.512TyrTyr: 0.512 ± 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
0.0XaaLeu: 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 4932 proteins (1770870 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