Amino acid dipepetide frequency for Clostridium sp. N3C

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
4.504AlaAla: 4.504 ± 0.094
0.671AlaCys: 0.671 ± 0.028
2.857AlaAsp: 2.857 ± 0.06
4.198AlaGlu: 4.198 ± 0.085
2.54AlaPhe: 2.54 ± 0.051
3.887AlaGly: 3.887 ± 0.069
0.902AlaHis: 0.902 ± 0.035
5.967AlaIle: 5.967 ± 0.087
4.926AlaLys: 4.926 ± 0.074
6.427AlaLeu: 6.427 ± 0.091
1.677AlaMet: 1.677 ± 0.043
2.722AlaAsn: 2.722 ± 0.06
1.48AlaPro: 1.48 ± 0.046
1.6AlaGln: 1.6 ± 0.045
2.116AlaArg: 2.116 ± 0.056
3.644AlaSer: 3.644 ± 0.066
2.845AlaThr: 2.845 ± 0.065
4.675AlaVal: 4.675 ± 0.092
0.381AlaTrp: 0.381 ± 0.024
2.37AlaTyr: 2.37 ± 0.056
0.0AlaXaa: 0.0 ± 0.0
Cys
0.577CysAla: 0.577 ± 0.027
0.2CysCys: 0.2 ± 0.018
0.659CysAsp: 0.659 ± 0.033
0.695CysGlu: 0.695 ± 0.028
0.495CysPhe: 0.495 ± 0.026
1.07CysGly: 1.07 ± 0.041
0.255CysHis: 0.255 ± 0.016
1.123CysIle: 1.123 ± 0.042
0.924CysLys: 0.924 ± 0.035
0.872CysLeu: 0.872 ± 0.036
0.243CysMet: 0.243 ± 0.017
0.647CysAsn: 0.647 ± 0.028
0.451CysPro: 0.451 ± 0.025
0.303CysGln: 0.303 ± 0.019
0.382CysArg: 0.382 ± 0.024
0.81CysSer: 0.81 ± 0.029
0.477CysThr: 0.477 ± 0.026
0.633CysVal: 0.633 ± 0.029
0.074CysTrp: 0.074 ± 0.009
0.461CysTyr: 0.461 ± 0.022
0.0CysXaa: 0.0 ± 0.0
Asp
2.786AspAla: 2.786 ± 0.057
0.602AspCys: 0.602 ± 0.028
2.527AspAsp: 2.527 ± 0.058
4.389AspGlu: 4.389 ± 0.079
2.792AspPhe: 2.792 ± 0.056
3.358AspGly: 3.358 ± 0.082
0.658AspHis: 0.658 ± 0.025
5.988AspIle: 5.988 ± 0.088
5.267AspLys: 5.267 ± 0.08
5.124AspLeu: 5.124 ± 0.079
1.511AspMet: 1.511 ± 0.044
3.289AspAsn: 3.289 ± 0.065
1.489AspPro: 1.489 ± 0.047
1.026AspGln: 1.026 ± 0.041
2.074AspArg: 2.074 ± 0.055
3.223AspSer: 3.223 ± 0.057
2.566AspThr: 2.566 ± 0.049
3.39AspVal: 3.39 ± 0.066
0.409AspTrp: 0.409 ± 0.022
2.906AspTyr: 2.906 ± 0.057
0.0AspXaa: 0.0 ± 0.0
Glu
5.111GluAla: 5.111 ± 0.093
0.605GluCys: 0.605 ± 0.031
4.542GluAsp: 4.542 ± 0.08
7.82GluGlu: 7.82 ± 0.127
2.7GluPhe: 2.7 ± 0.066
4.555GluGly: 4.555 ± 0.072
1.016GluHis: 1.016 ± 0.041
6.849GluIle: 6.849 ± 0.098
7.681GluLys: 7.681 ± 0.109
6.892GluLeu: 6.892 ± 0.103
1.908GluMet: 1.908 ± 0.046
4.775GluAsn: 4.775 ± 0.068
1.468GluPro: 1.468 ± 0.04
2.028GluGln: 2.028 ± 0.059
3.021GluArg: 3.021 ± 0.073
3.764GluSer: 3.764 ± 0.078
2.791GluThr: 2.791 ± 0.054
5.185GluVal: 5.185 ± 0.08
0.409GluTrp: 0.409 ± 0.02
3.099GluTyr: 3.099 ± 0.063
0.0GluXaa: 0.0 ± 0.0
Phe
2.394PheAla: 2.394 ± 0.051
0.54PheCys: 0.54 ± 0.023
2.529PheAsp: 2.529 ± 0.056
2.58PheGlu: 2.58 ± 0.058
1.983PhePhe: 1.983 ± 0.05
2.643PheGly: 2.643 ± 0.059
0.623PheHis: 0.623 ± 0.029
4.326PheIle: 4.326 ± 0.091
3.337PheLys: 3.337 ± 0.062
3.877PheLeu: 3.877 ± 0.077
1.161PheMet: 1.161 ± 0.039
2.52PheAsn: 2.52 ± 0.045
1.194PhePro: 1.194 ± 0.042
1.184PheGln: 1.184 ± 0.038
1.344PheArg: 1.344 ± 0.043
3.137PheSer: 3.137 ± 0.055
2.233PheThr: 2.233 ± 0.051
2.628PheVal: 2.628 ± 0.055
0.319PheTrp: 0.319 ± 0.018
1.828PheTyr: 1.828 ± 0.059
0.0PheXaa: 0.0 ± 0.0
Gly
3.934GlyAla: 3.934 ± 0.071
0.859GlyCys: 0.859 ± 0.035
3.341GlyAsp: 3.341 ± 0.057
4.296GlyGlu: 4.296 ± 0.066
2.899GlyPhe: 2.899 ± 0.059
3.978GlyGly: 3.978 ± 0.092
1.017GlyHis: 1.017 ± 0.041
6.225GlyIle: 6.225 ± 0.084
5.564GlyLys: 5.564 ± 0.082
5.44GlyLeu: 5.44 ± 0.086
1.713GlyMet: 1.713 ± 0.047
3.075GlyAsn: 3.075 ± 0.067
1.314GlyPro: 1.314 ± 0.048
1.671GlyGln: 1.671 ± 0.047
2.454GlyArg: 2.454 ± 0.063
3.75GlySer: 3.75 ± 0.077
3.251GlyThr: 3.251 ± 0.075
4.47GlyVal: 4.47 ± 0.075
0.455GlyTrp: 0.455 ± 0.026
2.962GlyTyr: 2.962 ± 0.067
0.0GlyXaa: 0.0 ± 0.0
His
0.722HisAla: 0.722 ± 0.029
0.236HisCys: 0.236 ± 0.017
0.697HisAsp: 0.697 ± 0.029
0.863HisGlu: 0.863 ± 0.031
0.677HisPhe: 0.677 ± 0.03
0.969HisGly: 0.969 ± 0.034
0.314HisHis: 0.314 ± 0.017
1.391HisIle: 1.391 ± 0.043
1.099HisLys: 1.099 ± 0.039
1.227HisLeu: 1.227 ± 0.04
0.409HisMet: 0.409 ± 0.022
0.886HisAsn: 0.886 ± 0.038
0.693HisPro: 0.693 ± 0.029
0.389HisGln: 0.389 ± 0.021
0.647HisArg: 0.647 ± 0.026
0.941HisSer: 0.941 ± 0.037
0.693HisThr: 0.693 ± 0.028
0.757HisVal: 0.757 ± 0.03
0.132HisTrp: 0.132 ± 0.013
0.655HisTyr: 0.655 ± 0.023
0.0HisXaa: 0.0 ± 0.0
Ile
5.974IleAla: 5.974 ± 0.101
1.145IleCys: 1.145 ± 0.041
5.616IleAsp: 5.616 ± 0.079
7.028IleGlu: 7.028 ± 0.103
3.992IlePhe: 3.992 ± 0.079
5.657IleGly: 5.657 ± 0.084
1.283IleHis: 1.283 ± 0.039
8.879IleIle: 8.879 ± 0.139
8.258IleLys: 8.258 ± 0.1
8.75IleLeu: 8.75 ± 0.127
2.343IleMet: 2.343 ± 0.055
5.955IleAsn: 5.955 ± 0.093
3.128IlePro: 3.128 ± 0.062
2.186IleGln: 2.186 ± 0.045
3.372IleArg: 3.372 ± 0.07
6.589IleSer: 6.589 ± 0.092
4.88IleThr: 4.88 ± 0.076
5.968IleVal: 5.968 ± 0.092
0.53IleTrp: 0.53 ± 0.026
3.759IleTyr: 3.759 ± 0.068
0.0IleXaa: 0.0 ± 0.0
Lys
5.403LysAla: 5.403 ± 0.08
0.807LysCys: 0.807 ± 0.035
5.906LysAsp: 5.906 ± 0.09
8.724LysGlu: 8.724 ± 0.121
2.845LysPhe: 2.845 ± 0.059
5.284LysGly: 5.284 ± 0.087
1.132LysHis: 1.132 ± 0.035
7.531LysIle: 7.531 ± 0.098
7.838LysLys: 7.838 ± 0.11
7.893LysLeu: 7.893 ± 0.091
2.104LysMet: 2.104 ± 0.045
5.289LysAsn: 5.289 ± 0.08
2.131LysPro: 2.131 ± 0.054
2.094LysGln: 2.094 ± 0.05
3.227LysArg: 3.227 ± 0.062
4.875LysSer: 4.875 ± 0.081
3.721LysThr: 3.721 ± 0.061
6.277LysVal: 6.277 ± 0.085
0.644LysTrp: 0.644 ± 0.027
3.961LysTyr: 3.961 ± 0.073
0.0LysXaa: 0.0 ± 0.0
Leu
5.653LeuAla: 5.653 ± 0.094
1.134LeuCys: 1.134 ± 0.04
5.041LeuAsp: 5.041 ± 0.096
6.563LeuGlu: 6.563 ± 0.111
3.682LeuPhe: 3.682 ± 0.083
5.688LeuGly: 5.688 ± 0.091
1.253LeuHis: 1.253 ± 0.039
8.4LeuIle: 8.4 ± 0.118
8.45LeuLys: 8.45 ± 0.103
8.508LeuLeu: 8.508 ± 0.135
2.419LeuMet: 2.419 ± 0.053
5.386LeuAsn: 5.386 ± 0.078
3.043LeuPro: 3.043 ± 0.057
2.594LeuGln: 2.594 ± 0.057
3.392LeuArg: 3.392 ± 0.069
6.901LeuSer: 6.901 ± 0.088
4.595LeuThr: 4.595 ± 0.082
5.488LeuVal: 5.488 ± 0.099
0.674LeuTrp: 0.674 ± 0.029
3.519LeuTyr: 3.519 ± 0.067
0.0LeuXaa: 0.0 ± 0.0
Met
1.834MetAla: 1.834 ± 0.048
0.255MetCys: 0.255 ± 0.015
1.663MetAsp: 1.663 ± 0.052
2.066MetGlu: 2.066 ± 0.044
0.878MetPhe: 0.878 ± 0.031
1.684MetGly: 1.684 ± 0.045
0.322MetHis: 0.322 ± 0.021
2.088MetIle: 2.088 ± 0.049
2.441MetLys: 2.441 ± 0.049
2.416MetLeu: 2.416 ± 0.052
0.617MetMet: 0.617 ± 0.029
1.506MetAsn: 1.506 ± 0.043
0.858MetPro: 0.858 ± 0.03
0.639MetGln: 0.639 ± 0.028
0.904MetArg: 0.904 ± 0.031
1.683MetSer: 1.683 ± 0.045
1.208MetThr: 1.208 ± 0.041
1.732MetVal: 1.732 ± 0.042
0.147MetTrp: 0.147 ± 0.013
0.843MetTyr: 0.843 ± 0.029
0.0MetXaa: 0.0 ± 0.0
Asn
2.886AsnAla: 2.886 ± 0.06
0.716AsnCys: 0.716 ± 0.032
2.663AsnAsp: 2.663 ± 0.05
3.91AsnGlu: 3.91 ± 0.067
2.572AsnPhe: 2.572 ± 0.062
3.317AsnGly: 3.317 ± 0.066
0.883AsnHis: 0.883 ± 0.033
6.308AsnIle: 6.308 ± 0.095
5.337AsnLys: 5.337 ± 0.084
5.371AsnLeu: 5.371 ± 0.085
1.592AsnMet: 1.592 ± 0.043
3.918AsnAsn: 3.918 ± 0.085
2.073AsnPro: 2.073 ± 0.055
1.488AsnGln: 1.488 ± 0.047
2.019AsnArg: 2.019 ± 0.049
3.916AsnSer: 3.916 ± 0.078
2.735AsnThr: 2.735 ± 0.063
3.251AsnVal: 3.251 ± 0.058
0.446AsnTrp: 0.446 ± 0.023
2.749AsnTyr: 2.749 ± 0.06
0.0AsnXaa: 0.0 ± 0.0
Pro
1.554ProAla: 1.554 ± 0.047
0.316ProCys: 0.316 ± 0.021
1.587ProAsp: 1.587 ± 0.048
2.344ProGlu: 2.344 ± 0.056
1.404ProPhe: 1.404 ± 0.047
1.868ProGly: 1.868 ± 0.053
0.456ProHis: 0.456 ± 0.025
2.574ProIle: 2.574 ± 0.058
2.122ProLys: 2.122 ± 0.054
2.646ProLeu: 2.646 ± 0.063
0.739ProMet: 0.739 ± 0.032
1.486ProAsn: 1.486 ± 0.039
0.72ProPro: 0.72 ± 0.033
0.838ProGln: 0.838 ± 0.032
0.913ProArg: 0.913 ± 0.037
1.808ProSer: 1.808 ± 0.044
1.458ProThr: 1.458 ± 0.041
2.155ProVal: 2.155 ± 0.053
0.257ProTrp: 0.257 ± 0.02
1.424ProTyr: 1.424 ± 0.046
0.0ProXaa: 0.0 ± 0.0
Gln
1.617GlnAla: 1.617 ± 0.05
0.337GlnCys: 0.337 ± 0.018
1.288GlnAsp: 1.288 ± 0.04
1.957GlnGlu: 1.957 ± 0.053
1.043GlnPhe: 1.043 ± 0.037
1.733GlnGly: 1.733 ± 0.045
0.369GlnHis: 0.369 ± 0.019
2.209GlnIle: 2.209 ± 0.051
2.073GlnLys: 2.073 ± 0.051
2.511GlnLeu: 2.511 ± 0.054
0.735GlnMet: 0.735 ± 0.032
1.402GlnAsn: 1.402 ± 0.04
0.681GlnPro: 0.681 ± 0.027
0.86GlnGln: 0.86 ± 0.042
1.172GlnArg: 1.172 ± 0.037
1.409GlnSer: 1.409 ± 0.046
0.959GlnThr: 0.959 ± 0.034
1.717GlnVal: 1.717 ± 0.045
0.298GlnTrp: 0.298 ± 0.023
1.257GlnTyr: 1.257 ± 0.035
0.0GlnXaa: 0.0 ± 0.0
Arg
2.168ArgAla: 2.168 ± 0.047
0.366ArgCys: 0.366 ± 0.019
2.024ArgAsp: 2.024 ± 0.051
3.067ArgGlu: 3.067 ± 0.073
1.534ArgPhe: 1.534 ± 0.043
2.138ArgGly: 2.138 ± 0.051
0.507ArgHis: 0.507 ± 0.023
3.357ArgIle: 3.357 ± 0.068
3.352ArgLys: 3.352 ± 0.067
3.383ArgLeu: 3.383 ± 0.074
1.015ArgMet: 1.015 ± 0.041
2.142ArgAsn: 2.142 ± 0.049
0.956ArgPro: 0.956 ± 0.036
1.126ArgGln: 1.126 ± 0.035
1.715ArgArg: 1.715 ± 0.048
1.865ArgSer: 1.865 ± 0.05
1.673ArgThr: 1.673 ± 0.045
2.4ArgVal: 2.4 ± 0.052
0.278ArgTrp: 0.278 ± 0.019
1.583ArgTyr: 1.583 ± 0.041
0.0ArgXaa: 0.0 ± 0.0
Ser
3.474SerAla: 3.474 ± 0.062
0.65SerCys: 0.65 ± 0.025
3.081SerAsp: 3.081 ± 0.063
4.09SerGlu: 4.09 ± 0.071
3.124SerPhe: 3.124 ± 0.059
4.101SerGly: 4.101 ± 0.08
0.95SerHis: 0.95 ± 0.033
6.286SerIle: 6.286 ± 0.096
5.692SerLys: 5.692 ± 0.077
6.049SerLeu: 6.049 ± 0.094
1.61SerMet: 1.61 ± 0.044
3.869SerAsn: 3.869 ± 0.063
1.738SerPro: 1.738 ± 0.05
1.716SerGln: 1.716 ± 0.045
2.226SerArg: 2.226 ± 0.054
4.468SerSer: 4.468 ± 0.092
3.243SerThr: 3.243 ± 0.066
3.898SerVal: 3.898 ± 0.064
0.426SerTrp: 0.426 ± 0.024
2.632SerTyr: 2.632 ± 0.052
0.0SerXaa: 0.0 ± 0.0
Thr
3.189ThrAla: 3.189 ± 0.067
0.461ThrCys: 0.461 ± 0.026
2.347ThrAsp: 2.347 ± 0.054
3.228ThrGlu: 3.228 ± 0.07
2.128ThrPhe: 2.128 ± 0.054
3.521ThrGly: 3.521 ± 0.075
0.729ThrHis: 0.729 ± 0.03
4.765ThrIle: 4.765 ± 0.076
3.382ThrLys: 3.382 ± 0.065
4.62ThrLeu: 4.62 ± 0.077
1.123ThrMet: 1.123 ± 0.035
2.444ThrAsn: 2.444 ± 0.069
1.703ThrPro: 1.703 ± 0.049
0.985ThrGln: 0.985 ± 0.037
1.553ThrArg: 1.553 ± 0.039
2.973ThrSer: 2.973 ± 0.067
2.634ThrThr: 2.634 ± 0.051
3.608ThrVal: 3.608 ± 0.077
0.339ThrTrp: 0.339 ± 0.024
1.96ThrTyr: 1.96 ± 0.053
0.0ThrXaa: 0.0 ± 0.0
Val
4.147ValAla: 4.147 ± 0.078
0.774ValCys: 0.774 ± 0.032
3.992ValAsp: 3.992 ± 0.071
5.012ValGlu: 5.012 ± 0.081
2.84ValPhe: 2.84 ± 0.063
4.024ValGly: 4.024 ± 0.071
0.944ValHis: 0.944 ± 0.037
6.201ValIle: 6.201 ± 0.102
5.486ValLys: 5.486 ± 0.073
6.047ValLeu: 6.047 ± 0.084
1.638ValMet: 1.638 ± 0.051
3.613ValAsn: 3.613 ± 0.078
2.077ValPro: 2.077 ± 0.05
1.579ValGln: 1.579 ± 0.046
2.192ValArg: 2.192 ± 0.049
4.268ValSer: 4.268 ± 0.073
3.405ValThr: 3.405 ± 0.063
4.769ValVal: 4.769 ± 0.084
0.378ValTrp: 0.378 ± 0.021
2.566ValTyr: 2.566 ± 0.057
0.0ValXaa: 0.0 ± 0.0
Trp
0.399TrpAla: 0.399 ± 0.023
0.098TrpCys: 0.098 ± 0.012
0.434TrpAsp: 0.434 ± 0.022
0.453TrpGlu: 0.453 ± 0.026
0.299TrpPhe: 0.299 ± 0.019
0.473TrpGly: 0.473 ± 0.021
0.136TrpHis: 0.136 ± 0.013
0.638TrpIle: 0.638 ± 0.034
0.617TrpLys: 0.617 ± 0.027
0.602TrpLeu: 0.602 ± 0.028
0.214TrpMet: 0.214 ± 0.017
0.41TrpAsn: 0.41 ± 0.022
0.174TrpPro: 0.174 ± 0.014
0.287TrpGln: 0.287 ± 0.017
0.287TrpArg: 0.287 ± 0.02
0.399TrpSer: 0.399 ± 0.028
0.308TrpThr: 0.308 ± 0.02
0.404TrpVal: 0.404 ± 0.024
0.083TrpTrp: 0.083 ± 0.01
0.296TrpTyr: 0.296 ± 0.016
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.063TyrAla: 2.063 ± 0.049
0.577TyrCys: 0.577 ± 0.027
2.58TyrAsp: 2.58 ± 0.06
2.938TyrGlu: 2.938 ± 0.061
1.955TyrPhe: 1.955 ± 0.055
2.719TyrGly: 2.719 ± 0.059
0.648TyrHis: 0.648 ± 0.028
4.185TyrIle: 4.185 ± 0.076
3.843TyrLys: 3.843 ± 0.068
3.731TyrLeu: 3.731 ± 0.069
1.014TyrMet: 1.014 ± 0.031
2.818TyrAsn: 2.818 ± 0.061
1.296TyrPro: 1.296 ± 0.042
1.033TyrGln: 1.033 ± 0.034
1.635TyrArg: 1.635 ± 0.049
2.9TyrSer: 2.9 ± 0.058
2.014TyrThr: 2.014 ± 0.049
2.545TyrVal: 2.545 ± 0.063
0.333TyrTrp: 0.333 ± 0.021
2.166TyrTyr: 2.166 ± 0.06
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 2848 proteins (868247 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