Amino acid dipepetide frequency for Synechococcus sp. SynAce01

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
16.363AlaAla: 16.363 ± 0.231
1.491AlaCys: 1.491 ± 0.049
6.026AlaAsp: 6.026 ± 0.086
7.475AlaGlu: 7.475 ± 0.109
3.397AlaPhe: 3.397 ± 0.064
10.573AlaGly: 10.573 ± 0.121
1.862AlaHis: 1.862 ± 0.05
5.325AlaIle: 5.325 ± 0.095
2.553AlaLys: 2.553 ± 0.062
15.395AlaLeu: 15.395 ± 0.176
2.753AlaMet: 2.753 ± 0.06
2.515AlaAsn: 2.515 ± 0.065
5.637AlaPro: 5.637 ± 0.104
4.294AlaGln: 4.294 ± 0.079
7.043AlaArg: 7.043 ± 0.103
7.203AlaSer: 7.203 ± 0.109
5.179AlaThr: 5.179 ± 0.087
8.598AlaVal: 8.598 ± 0.13
1.758AlaTrp: 1.758 ± 0.051
2.073AlaTyr: 2.073 ± 0.056
0.0AlaXaa: 0.0 ± 0.0
Cys
0.968CysAla: 0.968 ± 0.038
0.256CysCys: 0.256 ± 0.02
0.576CysAsp: 0.576 ± 0.027
0.576CysGlu: 0.576 ± 0.026
0.426CysPhe: 0.426 ± 0.022
1.236CysGly: 1.236 ± 0.047
0.334CysHis: 0.334 ± 0.022
0.38CysIle: 0.38 ± 0.022
0.175CysLys: 0.175 ± 0.015
1.443CysLeu: 1.443 ± 0.048
0.151CysMet: 0.151 ± 0.012
0.255CysAsn: 0.255 ± 0.02
0.78CysPro: 0.78 ± 0.032
0.514CysGln: 0.514 ± 0.028
1.153CysArg: 1.153 ± 0.043
0.834CysSer: 0.834 ± 0.036
0.468CysThr: 0.468 ± 0.025
0.615CysVal: 0.615 ± 0.028
0.313CysTrp: 0.313 ± 0.019
0.205CysTyr: 0.205 ± 0.018
0.0CysXaa: 0.0 ± 0.0
Asp
4.64AspAla: 4.64 ± 0.074
0.529AspCys: 0.529 ± 0.028
2.265AspAsp: 2.265 ± 0.072
2.198AspGlu: 2.198 ± 0.065
1.568AspPhe: 1.568 ± 0.05
4.711AspGly: 4.711 ± 0.087
1.149AspHis: 1.149 ± 0.038
1.44AspIle: 1.44 ± 0.05
0.932AspLys: 0.932 ± 0.048
6.981AspLeu: 6.981 ± 0.111
0.618AspMet: 0.618 ± 0.024
0.953AspAsn: 0.953 ± 0.036
4.261AspPro: 4.261 ± 0.073
2.68AspGln: 2.68 ± 0.057
3.83AspArg: 3.83 ± 0.08
2.458AspSer: 2.458 ± 0.066
1.882AspThr: 1.882 ± 0.051
2.796AspVal: 2.796 ± 0.064
0.989AspTrp: 0.989 ± 0.037
1.036AspTyr: 1.036 ± 0.043
0.0AspXaa: 0.0 ± 0.0
Glu
8.339GluAla: 8.339 ± 0.119
0.355GluCys: 0.355 ± 0.022
2.037GluAsp: 2.037 ± 0.059
3.029GluGlu: 3.029 ± 0.073
1.315GluPhe: 1.315 ± 0.046
4.469GluGly: 4.469 ± 0.083
1.118GluHis: 1.118 ± 0.039
2.307GluIle: 2.307 ± 0.068
1.381GluLys: 1.381 ± 0.06
8.204GluLeu: 8.204 ± 0.121
0.876GluMet: 0.876 ± 0.032
1.09GluAsn: 1.09 ± 0.039
3.425GluPro: 3.425 ± 0.072
3.438GluGln: 3.438 ± 0.08
5.542GluArg: 5.542 ± 0.089
2.746GluSer: 2.746 ± 0.049
2.462GluThr: 2.462 ± 0.057
3.789GluVal: 3.789 ± 0.083
0.794GluTrp: 0.794 ± 0.033
0.587GluTyr: 0.587 ± 0.026
0.0GluXaa: 0.0 ± 0.0
Phe
3.298PheAla: 3.298 ± 0.069
0.537PheCys: 0.537 ± 0.024
2.075PheAsp: 2.075 ± 0.057
1.845PheGlu: 1.845 ± 0.051
1.138PhePhe: 1.138 ± 0.045
3.025PheGly: 3.025 ± 0.072
0.663PheHis: 0.663 ± 0.029
1.157PheIle: 1.157 ± 0.04
0.726PheLys: 0.726 ± 0.028
3.531PheLeu: 3.531 ± 0.08
0.494PheMet: 0.494 ± 0.027
1.028PheAsn: 1.028 ± 0.04
1.555PhePro: 1.555 ± 0.047
1.253PheGln: 1.253 ± 0.039
2.077PheArg: 2.077 ± 0.059
2.446PheSer: 2.446 ± 0.065
1.583PheThr: 1.583 ± 0.047
1.9PheVal: 1.9 ± 0.052
0.602PheTrp: 0.602 ± 0.035
0.751PheTyr: 0.751 ± 0.036
0.0PheXaa: 0.0 ± 0.0
Gly
8.316GlyAla: 8.316 ± 0.112
1.272GlyCys: 1.272 ± 0.046
4.258GlyAsp: 4.258 ± 0.082
4.81GlyGlu: 4.81 ± 0.086
3.417GlyPhe: 3.417 ± 0.082
7.46GlyGly: 7.46 ± 0.121
1.871GlyHis: 1.871 ± 0.055
3.697GlyIle: 3.697 ± 0.066
2.349GlyLys: 2.349 ± 0.076
12.001GlyLeu: 12.001 ± 0.165
1.91GlyMet: 1.91 ± 0.054
1.956GlyAsn: 1.956 ± 0.052
4.193GlyPro: 4.193 ± 0.094
3.819GlyGln: 3.819 ± 0.07
6.41GlyArg: 6.41 ± 0.087
6.019GlySer: 6.019 ± 0.097
3.885GlyThr: 3.885 ± 0.081
6.064GlyVal: 6.064 ± 0.101
1.927GlyTrp: 1.927 ± 0.063
1.779GlyTyr: 1.779 ± 0.053
0.0GlyXaa: 0.0 ± 0.0
His
1.716HisAla: 1.716 ± 0.051
0.36HisCys: 0.36 ± 0.023
0.94HisAsp: 0.94 ± 0.041
0.742HisGlu: 0.742 ± 0.029
0.746HisPhe: 0.746 ± 0.031
2.002HisGly: 2.002 ± 0.062
0.784HisHis: 0.784 ± 0.04
0.594HisIle: 0.594 ± 0.033
0.326HisLys: 0.326 ± 0.02
2.457HisLeu: 2.457 ± 0.067
0.228HisMet: 0.228 ± 0.016
0.502HisAsn: 0.502 ± 0.026
1.672HisPro: 1.672 ± 0.049
1.076HisGln: 1.076 ± 0.039
1.785HisArg: 1.785 ± 0.059
1.19HisSer: 1.19 ± 0.038
0.773HisThr: 0.773 ± 0.035
1.032HisVal: 1.032 ± 0.039
0.612HisTrp: 0.612 ± 0.029
0.523HisTyr: 0.523 ± 0.028
0.0HisXaa: 0.0 ± 0.0
Ile
4.917IleAla: 4.917 ± 0.105
0.541IleCys: 0.541 ± 0.027
2.68IleAsp: 2.68 ± 0.061
3.02IleGlu: 3.02 ± 0.06
1.049IlePhe: 1.049 ± 0.044
4.18IleGly: 4.18 ± 0.082
0.934IleHis: 0.934 ± 0.033
1.082IleIle: 1.082 ± 0.044
1.067IleLys: 1.067 ± 0.037
3.489IleLeu: 3.489 ± 0.087
0.354IleMet: 0.354 ± 0.022
1.224IleAsn: 1.224 ± 0.042
2.478IlePro: 2.478 ± 0.062
1.57IleGln: 1.57 ± 0.054
2.838IleArg: 2.838 ± 0.06
2.808IleSer: 2.808 ± 0.066
2.445IleThr: 2.445 ± 0.063
2.442IleVal: 2.442 ± 0.067
0.602IleTrp: 0.602 ± 0.031
0.826IleTyr: 0.826 ± 0.034
0.0IleXaa: 0.0 ± 0.0
Lys
3.05LysAla: 3.05 ± 0.083
0.118LysCys: 0.118 ± 0.013
1.057LysAsp: 1.057 ± 0.041
1.366LysGlu: 1.366 ± 0.049
0.516LysPhe: 0.516 ± 0.025
2.058LysGly: 2.058 ± 0.061
0.338LysHis: 0.338 ± 0.019
0.932LysIle: 0.932 ± 0.037
0.692LysLys: 0.692 ± 0.033
2.667LysLeu: 2.667 ± 0.066
0.322LysMet: 0.322 ± 0.022
0.512LysAsn: 0.512 ± 0.027
1.633LysPro: 1.633 ± 0.055
1.138LysGln: 1.138 ± 0.039
1.724LysArg: 1.724 ± 0.048
1.111LysSer: 1.111 ± 0.046
1.231LysThr: 1.231 ± 0.048
1.676LysVal: 1.676 ± 0.055
0.181LysTrp: 0.181 ± 0.015
0.368LysTyr: 0.368 ± 0.022
0.0LysXaa: 0.0 ± 0.0
Leu
16.671LeuAla: 16.671 ± 0.203
1.418LeuCys: 1.418 ± 0.043
6.146LeuAsp: 6.146 ± 0.098
8.871LeuGlu: 8.871 ± 0.126
3.617LeuPhe: 3.617 ± 0.073
10.666LeuGly: 10.666 ± 0.134
2.421LeuHis: 2.421 ± 0.053
5.633LeuIle: 5.633 ± 0.096
3.168LeuLys: 3.168 ± 0.07
17.765LeuLeu: 17.765 ± 0.282
2.317LeuMet: 2.317 ± 0.053
2.98LeuAsn: 2.98 ± 0.075
8.251LeuPro: 8.251 ± 0.133
6.121LeuGln: 6.121 ± 0.113
9.702LeuArg: 9.702 ± 0.135
7.992LeuSer: 7.992 ± 0.109
5.217LeuThr: 5.217 ± 0.082
9.435LeuVal: 9.435 ± 0.133
1.946LeuTrp: 1.946 ± 0.059
1.952LeuTyr: 1.952 ± 0.057
0.0LeuXaa: 0.0 ± 0.0
Met
3.097MetAla: 3.097 ± 0.068
0.082MetCys: 0.082 ± 0.011
0.794MetAsp: 0.794 ± 0.031
1.018MetGlu: 1.018 ± 0.041
0.364MetPhe: 0.364 ± 0.021
1.64MetGly: 1.64 ± 0.059
0.325MetHis: 0.325 ± 0.022
0.701MetIle: 0.701 ± 0.032
0.471MetLys: 0.471 ± 0.027
1.958MetLeu: 1.958 ± 0.062
0.242MetMet: 0.242 ± 0.021
0.459MetAsn: 0.459 ± 0.024
1.197MetPro: 1.197 ± 0.037
0.684MetGln: 0.684 ± 0.03
1.164MetArg: 1.164 ± 0.044
1.021MetSer: 1.021 ± 0.038
1.123MetThr: 1.123 ± 0.037
1.485MetVal: 1.485 ± 0.039
0.075MetTrp: 0.075 ± 0.009
0.166MetTyr: 0.166 ± 0.012
0.0MetXaa: 0.0 ± 0.0
Asn
2.337AsnAla: 2.337 ± 0.065
0.235AsnCys: 0.235 ± 0.016
1.142AsnAsp: 1.142 ± 0.041
0.993AsnGlu: 0.993 ± 0.044
0.788AsnPhe: 0.788 ± 0.035
2.17AsnGly: 2.17 ± 0.056
0.484AsnHis: 0.484 ± 0.027
0.761AsnIle: 0.761 ± 0.033
0.537AsnLys: 0.537 ± 0.026
2.945AsnLeu: 2.945 ± 0.067
0.354AsnMet: 0.354 ± 0.022
0.647AsnAsn: 0.647 ± 0.032
1.941AsnPro: 1.941 ± 0.053
1.035AsnGln: 1.035 ± 0.037
1.829AsnArg: 1.829 ± 0.052
1.299AsnSer: 1.299 ± 0.045
1.077AsnThr: 1.077 ± 0.04
1.377AsnVal: 1.377 ± 0.044
0.422AsnTrp: 0.422 ± 0.024
0.496AsnTyr: 0.496 ± 0.027
0.0AsnXaa: 0.0 ± 0.0
Pro
7.953ProAla: 7.953 ± 0.138
0.605ProCys: 0.605 ± 0.032
3.099ProAsp: 3.099 ± 0.077
4.169ProGlu: 4.169 ± 0.074
2.0ProPhe: 2.0 ± 0.058
5.349ProGly: 5.349 ± 0.086
1.013ProHis: 1.013 ± 0.035
2.409ProIle: 2.409 ± 0.061
1.131ProLys: 1.131 ± 0.04
7.884ProLeu: 7.884 ± 0.109
1.305ProMet: 1.305 ± 0.038
1.224ProAsn: 1.224 ± 0.041
3.488ProPro: 3.488 ± 0.105
2.334ProGln: 2.334 ± 0.057
3.354ProArg: 3.354 ± 0.075
3.886ProSer: 3.886 ± 0.088
2.688ProThr: 2.688 ± 0.062
4.165ProVal: 4.165 ± 0.084
1.153ProTrp: 1.153 ± 0.04
1.03ProTyr: 1.03 ± 0.041
0.0ProXaa: 0.0 ± 0.0
Gln
6.016GlnAla: 6.016 ± 0.108
0.33GlnCys: 0.33 ± 0.021
1.599GlnAsp: 1.599 ± 0.047
2.462GlnGlu: 2.462 ± 0.063
1.159GlnPhe: 1.159 ± 0.048
3.668GlnGly: 3.668 ± 0.067
0.848GlnHis: 0.848 ± 0.03
1.806GlnIle: 1.806 ± 0.055
1.0GlnLys: 1.0 ± 0.04
6.78GlnLeu: 6.78 ± 0.118
0.696GlnMet: 0.696 ± 0.033
0.805GlnAsn: 0.805 ± 0.036
3.031GlnPro: 3.031 ± 0.062
2.993GlnGln: 2.993 ± 0.084
4.393GlnArg: 4.393 ± 0.087
2.132GlnSer: 2.132 ± 0.054
1.658GlnThr: 1.658 ± 0.048
3.354GlnVal: 3.354 ± 0.066
0.775GlnTrp: 0.775 ± 0.035
0.51GlnTyr: 0.51 ± 0.025
0.0GlnXaa: 0.0 ± 0.0
Arg
6.206ArgAla: 6.206 ± 0.083
1.118ArgCys: 1.118 ± 0.034
3.138ArgAsp: 3.138 ± 0.074
3.621ArgGlu: 3.621 ± 0.074
2.971ArgPhe: 2.971 ± 0.056
5.011ArgGly: 5.011 ± 0.086
1.945ArgHis: 1.945 ± 0.054
3.239ArgIle: 3.239 ± 0.073
1.498ArgLys: 1.498 ± 0.048
11.176ArgLeu: 11.176 ± 0.164
1.397ArgMet: 1.397 ± 0.036
1.654ArgAsn: 1.654 ± 0.049
4.093ArgPro: 4.093 ± 0.086
4.739ArgGln: 4.739 ± 0.09
6.973ArgArg: 6.973 ± 0.126
5.032ArgSer: 5.032 ± 0.089
2.734ArgThr: 2.734 ± 0.066
4.324ArgVal: 4.324 ± 0.076
1.839ArgTrp: 1.839 ± 0.06
1.649ArgTyr: 1.649 ± 0.045
0.0ArgXaa: 0.0 ± 0.0
Ser
6.336SerAla: 6.336 ± 0.088
0.752SerCys: 0.752 ± 0.033
3.013SerAsp: 3.013 ± 0.065
3.266SerGlu: 3.266 ± 0.065
2.254SerPhe: 2.254 ± 0.056
6.334SerGly: 6.334 ± 0.1
1.318SerHis: 1.318 ± 0.041
2.261SerIle: 2.261 ± 0.059
1.391SerLys: 1.391 ± 0.053
8.082SerLeu: 8.082 ± 0.114
1.189SerMet: 1.189 ± 0.038
1.407SerAsn: 1.407 ± 0.048
3.618SerPro: 3.618 ± 0.072
2.603SerGln: 2.603 ± 0.052
4.529SerArg: 4.529 ± 0.08
4.414SerSer: 4.414 ± 0.086
2.935SerThr: 2.935 ± 0.065
3.605SerVal: 3.605 ± 0.077
1.164SerTrp: 1.164 ± 0.045
1.139SerTyr: 1.139 ± 0.038
0.0SerXaa: 0.0 ± 0.0
Thr
5.735ThrAla: 5.735 ± 0.086
0.445ThrCys: 0.445 ± 0.029
2.036ThrAsp: 2.036 ± 0.046
2.019ThrGlu: 2.019 ± 0.046
1.33ThrPhe: 1.33 ± 0.045
4.14ThrGly: 4.14 ± 0.078
0.755ThrHis: 0.755 ± 0.033
2.01ThrIle: 2.01 ± 0.056
0.952ThrLys: 0.952 ± 0.038
5.351ThrLeu: 5.351 ± 0.082
0.763ThrMet: 0.763 ± 0.031
1.059ThrAsn: 1.059 ± 0.044
3.343ThrPro: 3.343 ± 0.068
1.288ThrGln: 1.288 ± 0.042
2.311ThrArg: 2.311 ± 0.061
2.899ThrSer: 2.899 ± 0.058
2.671ThrThr: 2.671 ± 0.076
3.511ThrVal: 3.511 ± 0.067
0.622ThrTrp: 0.622 ± 0.028
0.975ThrTyr: 0.975 ± 0.035
0.0ThrXaa: 0.0 ± 0.0
Val
8.258ValAla: 8.258 ± 0.132
0.721ValCys: 0.721 ± 0.033
3.44ValAsp: 3.44 ± 0.072
4.269ValGlu: 4.269 ± 0.082
2.374ValPhe: 2.374 ± 0.054
5.513ValGly: 5.513 ± 0.094
1.146ValHis: 1.146 ± 0.042
3.408ValIle: 3.408 ± 0.085
1.585ValLys: 1.585 ± 0.049
9.125ValLeu: 9.125 ± 0.133
1.428ValMet: 1.428 ± 0.046
1.731ValAsn: 1.731 ± 0.059
3.573ValPro: 3.573 ± 0.073
2.465ValGln: 2.465 ± 0.065
4.414ValArg: 4.414 ± 0.083
3.963ValSer: 3.963 ± 0.078
2.9ValThr: 2.9 ± 0.069
6.144ValVal: 6.144 ± 0.096
0.86ValTrp: 0.86 ± 0.034
1.055ValTyr: 1.055 ± 0.038
0.0ValXaa: 0.0 ± 0.0
Trp
1.427TrpAla: 1.427 ± 0.043
0.258TrpCys: 0.258 ± 0.02
0.64TrpAsp: 0.64 ± 0.029
0.718TrpGlu: 0.718 ± 0.031
0.629TrpPhe: 0.629 ± 0.034
1.239TrpGly: 1.239 ± 0.043
0.4TrpHis: 0.4 ± 0.025
0.817TrpIle: 0.817 ± 0.037
0.359TrpLys: 0.359 ± 0.023
2.904TrpLeu: 2.904 ± 0.077
0.425TrpMet: 0.425 ± 0.025
0.413TrpAsn: 0.413 ± 0.026
1.067TrpPro: 1.067 ± 0.041
1.193TrpGln: 1.193 ± 0.044
1.59TrpArg: 1.59 ± 0.051
1.118TrpSer: 1.118 ± 0.041
0.563TrpThr: 0.563 ± 0.029
0.961TrpVal: 0.961 ± 0.034
0.421TrpTrp: 0.421 ± 0.023
0.268TrpTyr: 0.268 ± 0.02
0.0TrpXaa: 0.0 ± 0.0
Tyr
1.87TyrAla: 1.87 ± 0.047
0.238TyrCys: 0.238 ± 0.017
0.953TyrAsp: 0.953 ± 0.036
0.838TyrGlu: 0.838 ± 0.034
0.63TyrPhe: 0.63 ± 0.028
1.97TyrGly: 1.97 ± 0.062
0.352TyrHis: 0.352 ± 0.024
0.587TyrIle: 0.587 ± 0.029
0.4TyrLys: 0.4 ± 0.024
2.152TyrLeu: 2.152 ± 0.063
0.243TyrMet: 0.243 ± 0.017
0.454TyrAsn: 0.454 ± 0.022
1.005TyrPro: 1.005 ± 0.037
0.777TyrGln: 0.777 ± 0.034
1.697TyrArg: 1.697 ± 0.046
1.039TyrSer: 1.039 ± 0.041
0.736TyrThr: 0.736 ± 0.032
1.094TyrVal: 1.094 ± 0.037
0.352TyrTrp: 0.352 ± 0.021
0.391TyrTyr: 0.391 ± 0.024
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 2626 proteins (760367 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