Amino acid dipepetide frequency for Nostoc sp. T09

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
7.947AlaAla: 7.947 ± 0.089
0.798AlaCys: 0.798 ± 0.018
4.099AlaAsp: 4.099 ± 0.051
5.444AlaGlu: 5.444 ± 0.06
2.99AlaPhe: 2.99 ± 0.043
5.418AlaGly: 5.418 ± 0.063
1.336AlaHis: 1.336 ± 0.027
7.215AlaIle: 7.215 ± 0.068
4.286AlaLys: 4.286 ± 0.054
8.874AlaLeu: 8.874 ± 0.077
1.588AlaMet: 1.588 ± 0.029
3.699AlaAsn: 3.699 ± 0.056
2.866AlaPro: 2.866 ± 0.042
4.481AlaGln: 4.481 ± 0.059
3.632AlaArg: 3.632 ± 0.046
4.971AlaSer: 4.971 ± 0.061
4.846AlaThr: 4.846 ± 0.054
5.698AlaVal: 5.698 ± 0.06
1.082AlaTrp: 1.082 ± 0.027
2.441AlaTyr: 2.441 ± 0.039
0.0AlaXaa: 0.0 ± 0.0
Cys
0.661CysAla: 0.661 ± 0.016
0.149CysCys: 0.149 ± 0.008
0.534CysAsp: 0.534 ± 0.017
0.49CysGlu: 0.49 ± 0.017
0.411CysPhe: 0.411 ± 0.015
0.726CysGly: 0.726 ± 0.019
0.279CysHis: 0.279 ± 0.013
0.613CysIle: 0.613 ± 0.014
0.364CysLys: 0.364 ± 0.012
1.135CysLeu: 1.135 ± 0.026
0.14CysMet: 0.14 ± 0.007
0.39CysAsn: 0.39 ± 0.016
0.503CysPro: 0.503 ± 0.016
0.56CysGln: 0.56 ± 0.018
0.495CysArg: 0.495 ± 0.017
0.59CysSer: 0.59 ± 0.016
0.449CysThr: 0.449 ± 0.015
0.554CysVal: 0.554 ± 0.016
0.147CysTrp: 0.147 ± 0.008
0.351CysTyr: 0.351 ± 0.012
0.0CysXaa: 0.0 ± 0.0
Asp
3.668AspAla: 3.668 ± 0.047
0.506AspCys: 0.506 ± 0.015
2.179AspAsp: 2.179 ± 0.037
3.039AspGlu: 3.039 ± 0.042
2.261AspPhe: 2.261 ± 0.04
3.313AspGly: 3.313 ± 0.053
0.656AspHis: 0.656 ± 0.02
3.445AspIle: 3.445 ± 0.042
2.281AspLys: 2.281 ± 0.037
5.585AspLeu: 5.585 ± 0.058
0.745AspMet: 0.745 ± 0.017
1.956AspAsn: 1.956 ± 0.035
2.23AspPro: 2.23 ± 0.038
1.671AspGln: 1.671 ± 0.028
3.199AspArg: 3.199 ± 0.041
2.922AspSer: 2.922 ± 0.04
2.484AspThr: 2.484 ± 0.039
3.031AspVal: 3.031 ± 0.04
0.933AspTrp: 0.933 ± 0.021
1.866AspTyr: 1.866 ± 0.032
0.0AspXaa: 0.0 ± 0.0
Glu
5.482GluAla: 5.482 ± 0.049
0.48GluCys: 0.48 ± 0.015
2.75GluAsp: 2.75 ± 0.039
3.925GluGlu: 3.925 ± 0.054
2.505GluPhe: 2.505 ± 0.033
3.056GluGly: 3.056 ± 0.043
1.077GluHis: 1.077 ± 0.024
5.027GluIle: 5.027 ± 0.052
3.457GluLys: 3.457 ± 0.047
6.996GluLeu: 6.996 ± 0.064
1.325GluMet: 1.325 ± 0.028
2.681GluAsn: 2.681 ± 0.044
2.322GluPro: 2.322 ± 0.039
3.851GluGln: 3.851 ± 0.049
3.444GluArg: 3.444 ± 0.056
3.304GluSer: 3.304 ± 0.042
3.295GluThr: 3.295 ± 0.04
4.404GluVal: 4.404 ± 0.056
0.769GluTrp: 0.769 ± 0.02
1.894GluTyr: 1.894 ± 0.035
0.0GluXaa: 0.0 ± 0.0
Phe
3.185PheAla: 3.185 ± 0.045
0.521PheCys: 0.521 ± 0.018
2.163PheAsp: 2.163 ± 0.039
2.174PheGlu: 2.174 ± 0.034
1.666PhePhe: 1.666 ± 0.028
2.801PheGly: 2.801 ± 0.041
0.767PheHis: 0.767 ± 0.018
2.478PheIle: 2.478 ± 0.038
1.586PheLys: 1.586 ± 0.032
4.141PheLeu: 4.141 ± 0.048
0.666PheMet: 0.666 ± 0.017
1.76PheAsn: 1.76 ± 0.03
1.749PhePro: 1.749 ± 0.032
1.911PheGln: 1.911 ± 0.034
1.761PheArg: 1.761 ± 0.028
2.985PheSer: 2.985 ± 0.046
2.334PheThr: 2.334 ± 0.034
2.41PheVal: 2.41 ± 0.034
0.709PheTrp: 0.709 ± 0.019
1.406PheTyr: 1.406 ± 0.027
0.0PheXaa: 0.0 ± 0.0
Gly
4.688GlyAla: 4.688 ± 0.065
0.743GlyCys: 0.743 ± 0.021
3.12GlyAsp: 3.12 ± 0.049
3.902GlyGlu: 3.902 ± 0.052
2.897GlyPhe: 2.897 ± 0.041
4.455GlyGly: 4.455 ± 0.064
1.231GlyHis: 1.231 ± 0.031
5.017GlyIle: 5.017 ± 0.057
4.103GlyLys: 4.103 ± 0.047
6.86GlyLeu: 6.86 ± 0.063
1.388GlyMet: 1.388 ± 0.026
3.033GlyAsn: 3.033 ± 0.05
1.37GlyPro: 1.37 ± 0.03
2.946GlyGln: 2.946 ± 0.046
3.2GlyArg: 3.2 ± 0.04
4.034GlySer: 4.034 ± 0.055
3.718GlyThr: 3.718 ± 0.049
4.633GlyVal: 4.633 ± 0.05
1.133GlyTrp: 1.133 ± 0.025
2.374GlyTyr: 2.374 ± 0.034
0.0GlyXaa: 0.0 ± 0.0
His
1.103HisAla: 1.103 ± 0.025
0.232HisCys: 0.232 ± 0.01
0.785HisAsp: 0.785 ± 0.018
1.033HisGlu: 1.033 ± 0.024
0.793HisPhe: 0.793 ± 0.02
1.095HisGly: 1.095 ± 0.021
0.601HisHis: 0.601 ± 0.019
1.175HisIle: 1.175 ± 0.028
0.816HisLys: 0.816 ± 0.021
2.249HisLeu: 2.249 ± 0.035
0.258HisMet: 0.258 ± 0.011
0.783HisAsn: 0.783 ± 0.018
1.353HisPro: 1.353 ± 0.026
1.17HisGln: 1.17 ± 0.026
1.098HisArg: 1.098 ± 0.023
1.236HisSer: 1.236 ± 0.028
0.975HisThr: 0.975 ± 0.026
0.857HisVal: 0.857 ± 0.025
0.36HisTrp: 0.36 ± 0.013
0.671HisTyr: 0.671 ± 0.021
0.0HisXaa: 0.0 ± 0.0
Ile
7.511IleAla: 7.511 ± 0.068
0.76IleCys: 0.76 ± 0.019
3.585IleAsp: 3.585 ± 0.045
4.23IleGlu: 4.23 ± 0.041
2.574IlePhe: 2.574 ± 0.042
4.416IleGly: 4.416 ± 0.054
1.335IleHis: 1.335 ± 0.026
3.86IleIle: 3.86 ± 0.051
3.13IleLys: 3.13 ± 0.043
6.951IleLeu: 6.951 ± 0.067
0.838IleMet: 0.838 ± 0.021
3.138IleAsn: 3.138 ± 0.045
3.59IlePro: 3.59 ± 0.046
3.22IleGln: 3.22 ± 0.04
3.147IleArg: 3.147 ± 0.041
4.55IleSer: 4.55 ± 0.048
3.818IleThr: 3.818 ± 0.044
4.439IleVal: 4.439 ± 0.05
0.97IleTrp: 0.97 ± 0.025
2.065IleTyr: 2.065 ± 0.037
0.0IleXaa: 0.0 ± 0.0
Lys
4.21LysAla: 4.21 ± 0.047
0.331LysCys: 0.331 ± 0.014
2.252LysAsp: 2.252 ± 0.035
2.802LysGlu: 2.802 ± 0.049
1.816LysPhe: 1.816 ± 0.032
2.64LysGly: 2.64 ± 0.036
0.851LysHis: 0.851 ± 0.024
3.54LysIle: 3.54 ± 0.044
2.279LysLys: 2.279 ± 0.034
5.608LysLeu: 5.608 ± 0.054
0.916LysMet: 0.916 ± 0.022
2.139LysAsn: 2.139 ± 0.035
2.492LysPro: 2.492 ± 0.043
2.94LysGln: 2.94 ± 0.037
2.347LysArg: 2.347 ± 0.036
2.978LysSer: 2.978 ± 0.043
2.903LysThr: 2.903 ± 0.042
3.252LysVal: 3.252 ± 0.046
0.519LysTrp: 0.519 ± 0.017
1.547LysTyr: 1.547 ± 0.029
0.0LysXaa: 0.0 ± 0.0
Leu
10.014LeuAla: 10.014 ± 0.082
0.999LeuCys: 0.999 ± 0.02
5.25LeuAsp: 5.25 ± 0.053
7.22LeuGlu: 7.22 ± 0.07
3.826LeuPhe: 3.826 ± 0.049
7.59LeuGly: 7.59 ± 0.067
1.975LeuHis: 1.975 ± 0.03
6.931LeuIle: 6.931 ± 0.062
5.602LeuLys: 5.602 ± 0.057
11.773LeuLeu: 11.773 ± 0.094
2.014LeuMet: 2.014 ± 0.033
4.691LeuAsn: 4.691 ± 0.051
5.783LeuPro: 5.783 ± 0.052
6.191LeuGln: 6.191 ± 0.066
5.708LeuArg: 5.708 ± 0.054
7.424LeuSer: 7.424 ± 0.072
6.274LeuThr: 6.274 ± 0.061
7.334LeuVal: 7.334 ± 0.064
1.509LeuTrp: 1.509 ± 0.033
2.732LeuTyr: 2.732 ± 0.036
0.0LeuXaa: 0.0 ± 0.0
Met
1.606MetAla: 1.606 ± 0.027
0.109MetCys: 0.109 ± 0.007
0.694MetAsp: 0.694 ± 0.016
0.941MetGlu: 0.941 ± 0.021
0.542MetPhe: 0.542 ± 0.016
1.202MetGly: 1.202 ± 0.026
0.337MetHis: 0.337 ± 0.013
1.001MetIle: 1.001 ± 0.024
0.936MetLys: 0.936 ± 0.021
1.932MetLeu: 1.932 ± 0.029
0.42MetMet: 0.42 ± 0.017
0.833MetAsn: 0.833 ± 0.021
0.94MetPro: 0.94 ± 0.023
0.976MetGln: 0.976 ± 0.023
0.968MetArg: 0.968 ± 0.02
1.297MetSer: 1.297 ± 0.021
1.267MetThr: 1.267 ± 0.026
1.227MetVal: 1.227 ± 0.026
0.153MetTrp: 0.153 ± 0.008
0.36MetTyr: 0.36 ± 0.014
0.0MetXaa: 0.0 ± 0.0
Asn
3.093AsnAla: 3.093 ± 0.044
0.458AsnCys: 0.458 ± 0.015
1.651AsnAsp: 1.651 ± 0.035
1.895AsnGlu: 1.895 ± 0.031
2.044AsnPhe: 2.044 ± 0.034
2.661AsnGly: 2.661 ± 0.044
0.886AsnHis: 0.886 ± 0.022
2.928AsnIle: 2.928 ± 0.043
1.791AsnLys: 1.791 ± 0.032
5.714AsnLeu: 5.714 ± 0.067
0.624AsnMet: 0.624 ± 0.018
2.088AsnAsn: 2.088 ± 0.043
2.851AsnPro: 2.851 ± 0.041
2.82AsnGln: 2.82 ± 0.045
2.301AsnArg: 2.301 ± 0.032
3.212AsnSer: 3.212 ± 0.051
2.343AsnThr: 2.343 ± 0.036
2.244AsnVal: 2.244 ± 0.034
0.765AsnTrp: 0.765 ± 0.021
1.595AsnTyr: 1.595 ± 0.029
0.0AsnXaa: 0.0 ± 0.0
Pro
3.297ProAla: 3.297 ± 0.042
0.323ProCys: 0.323 ± 0.013
2.945ProAsp: 2.945 ± 0.036
3.904ProGlu: 3.904 ± 0.043
1.708ProPhe: 1.708 ± 0.028
3.028ProGly: 3.028 ± 0.043
0.902ProHis: 0.902 ± 0.02
3.106ProIle: 3.106 ± 0.043
2.245ProLys: 2.245 ± 0.034
4.678ProLeu: 4.678 ± 0.052
0.706ProMet: 0.706 ± 0.019
2.281ProAsn: 2.281 ± 0.033
2.242ProPro: 2.242 ± 0.046
2.744ProGln: 2.744 ± 0.042
1.707ProArg: 1.707 ± 0.032
2.856ProSer: 2.856 ± 0.044
2.875ProThr: 2.875 ± 0.045
3.231ProVal: 3.231 ± 0.041
0.588ProTrp: 0.588 ± 0.018
1.321ProTyr: 1.321 ± 0.028
0.0ProXaa: 0.0 ± 0.0
Gln
5.243GlnAla: 5.243 ± 0.073
0.38GlnCys: 0.38 ± 0.016
2.185GlnAsp: 2.185 ± 0.035
3.731GlnGlu: 3.731 ± 0.049
1.837GlnPhe: 1.837 ± 0.038
3.331GlnGly: 3.331 ± 0.052
0.97GlnHis: 0.97 ± 0.02
3.89GlnIle: 3.89 ± 0.051
2.901GlnLys: 2.901 ± 0.038
6.283GlnLeu: 6.283 ± 0.066
1.127GlnMet: 1.127 ± 0.024
2.204GlnAsn: 2.204 ± 0.036
2.867GlnPro: 2.867 ± 0.043
4.294GlnGln: 4.294 ± 0.07
3.099GlnArg: 3.099 ± 0.045
3.063GlnSer: 3.063 ± 0.039
3.071GlnThr: 3.071 ± 0.043
3.919GlnVal: 3.919 ± 0.051
0.69GlnTrp: 0.69 ± 0.017
1.299GlnTyr: 1.299 ± 0.026
0.0GlnXaa: 0.0 ± 0.0
Arg
3.281ArgAla: 3.281 ± 0.049
0.495ArgCys: 0.495 ± 0.016
2.503ArgAsp: 2.503 ± 0.038
3.248ArgGlu: 3.248 ± 0.044
2.167ArgPhe: 2.167 ± 0.034
2.857ArgGly: 2.857 ± 0.041
1.024ArgHis: 1.024 ± 0.023
3.333ArgIle: 3.333 ± 0.036
2.251ArgLys: 2.251 ± 0.036
6.066ArgLeu: 6.066 ± 0.059
0.965ArgMet: 0.965 ± 0.022
2.172ArgAsn: 2.172 ± 0.033
2.054ArgPro: 2.054 ± 0.035
3.369ArgGln: 3.369 ± 0.045
3.013ArgArg: 3.013 ± 0.047
3.215ArgSer: 3.215 ± 0.042
2.568ArgThr: 2.568 ± 0.036
3.391ArgVal: 3.391 ± 0.041
0.811ArgTrp: 0.811 ± 0.019
1.947ArgTyr: 1.947 ± 0.033
0.0ArgXaa: 0.0 ± 0.0
Ser
4.653SerAla: 4.653 ± 0.046
0.608SerCys: 0.608 ± 0.02
3.115SerAsp: 3.115 ± 0.049
3.726SerGlu: 3.726 ± 0.048
2.533SerPhe: 2.533 ± 0.033
4.516SerGly: 4.516 ± 0.061
1.322SerHis: 1.322 ± 0.029
3.821SerIle: 3.821 ± 0.048
2.785SerLys: 2.785 ± 0.041
7.389SerLeu: 7.389 ± 0.058
1.152SerMet: 1.152 ± 0.025
2.825SerAsn: 2.825 ± 0.047
3.398SerPro: 3.398 ± 0.049
3.784SerGln: 3.784 ± 0.045
3.158SerArg: 3.158 ± 0.039
4.473SerSer: 4.473 ± 0.058
3.537SerThr: 3.537 ± 0.042
4.033SerVal: 4.033 ± 0.056
0.958SerTrp: 0.958 ± 0.026
1.875SerTyr: 1.875 ± 0.034
0.0SerXaa: 0.0 ± 0.0
Thr
4.942ThrAla: 4.942 ± 0.056
0.46ThrCys: 0.46 ± 0.015
2.64ThrAsp: 2.64 ± 0.036
3.251ThrGlu: 3.251 ± 0.049
2.104ThrPhe: 2.104 ± 0.036
4.26ThrGly: 4.26 ± 0.059
1.021ThrHis: 1.021 ± 0.023
3.688ThrIle: 3.688 ± 0.045
2.281ThrLys: 2.281 ± 0.038
6.192ThrLeu: 6.192 ± 0.07
0.753ThrMet: 0.753 ± 0.019
2.344ThrAsn: 2.344 ± 0.035
3.351ThrPro: 3.351 ± 0.047
3.062ThrGln: 3.062 ± 0.046
2.351ThrArg: 2.351 ± 0.038
3.522ThrSer: 3.522 ± 0.045
3.454ThrThr: 3.454 ± 0.049
4.108ThrVal: 4.108 ± 0.049
0.716ThrTrp: 0.716 ± 0.021
1.601ThrTyr: 1.601 ± 0.032
0.0ThrXaa: 0.0 ± 0.0
Val
5.987ValAla: 5.987 ± 0.071
0.666ValCys: 0.666 ± 0.019
3.377ValAsp: 3.377 ± 0.044
4.396ValGlu: 4.396 ± 0.049
2.542ValPhe: 2.542 ± 0.038
4.501ValGly: 4.501 ± 0.053
1.034ValHis: 1.034 ± 0.023
4.439ValIle: 4.439 ± 0.046
3.391ValLys: 3.391 ± 0.038
6.859ValLeu: 6.859 ± 0.061
1.376ValMet: 1.376 ± 0.027
3.023ValAsn: 3.023 ± 0.045
2.842ValPro: 2.842 ± 0.046
2.983ValGln: 2.983 ± 0.042
3.256ValArg: 3.256 ± 0.046
4.185ValSer: 4.185 ± 0.051
3.732ValThr: 3.732 ± 0.051
4.905ValVal: 4.905 ± 0.058
0.895ValTrp: 0.895 ± 0.024
1.861ValTyr: 1.861 ± 0.032
0.0ValXaa: 0.0 ± 0.0
Trp
0.911TrpAla: 0.911 ± 0.023
0.138TrpCys: 0.138 ± 0.008
0.679TrpAsp: 0.679 ± 0.023
0.939TrpGlu: 0.939 ± 0.022
0.604TrpPhe: 0.604 ± 0.02
0.95TrpGly: 0.95 ± 0.024
0.354TrpHis: 0.354 ± 0.014
0.833TrpIle: 0.833 ± 0.024
0.587TrpLys: 0.587 ± 0.02
1.916TrpLeu: 1.916 ± 0.036
0.31TrpMet: 0.31 ± 0.012
0.682TrpAsn: 0.682 ± 0.023
0.297TrpPro: 0.297 ± 0.011
1.288TrpGln: 1.288 ± 0.028
0.882TrpArg: 0.882 ± 0.023
0.868TrpSer: 0.868 ± 0.021
0.614TrpThr: 0.614 ± 0.019
0.964TrpVal: 0.964 ± 0.023
0.238TrpTrp: 0.238 ± 0.012
0.435TrpTyr: 0.435 ± 0.016
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.226TyrAla: 2.226 ± 0.031
0.385TyrCys: 0.385 ± 0.015
1.46TyrAsp: 1.46 ± 0.028
1.756TyrGlu: 1.756 ± 0.032
1.352TyrPhe: 1.352 ± 0.029
2.028TyrGly: 2.028 ± 0.032
0.686TyrHis: 0.686 ± 0.019
1.784TyrIle: 1.784 ± 0.03
1.29TyrLys: 1.29 ± 0.029
3.64TyrLeu: 3.64 ± 0.046
0.43TyrMet: 0.43 ± 0.012
1.243TyrAsn: 1.243 ± 0.026
1.586TyrPro: 1.586 ± 0.031
2.125TyrGln: 2.125 ± 0.04
1.965TyrArg: 1.965 ± 0.033
1.978TyrSer: 1.978 ± 0.033
1.545TyrThr: 1.545 ± 0.025
1.616TyrVal: 1.616 ± 0.031
0.544TyrTrp: 0.544 ± 0.016
1.094TyrTyr: 1.094 ± 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
0.001XaaXaa: 0.001 ± 0.001
Statistics based on 6607 proteins (2116477 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