Amino acid dipepetide frequency for Lyngbya sp. (strain PCC 8106) (Lyngbya aestuarii (strain CCY9616))

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
5.444AlaAla: 5.444 ± 0.075
0.761AlaCys: 0.761 ± 0.02
3.697AlaAsp: 3.697 ± 0.057
5.177AlaGlu: 5.177 ± 0.069
2.754AlaPhe: 2.754 ± 0.043
4.623AlaGly: 4.623 ± 0.063
1.117AlaHis: 1.117 ± 0.026
6.057AlaIle: 6.057 ± 0.068
3.572AlaLys: 3.572 ± 0.049
7.445AlaLeu: 7.445 ± 0.075
1.446AlaMet: 1.446 ± 0.027
3.23AlaAsn: 3.23 ± 0.074
2.188AlaPro: 2.188 ± 0.039
3.571AlaGln: 3.571 ± 0.048
2.87AlaArg: 2.87 ± 0.04
4.456AlaSer: 4.456 ± 0.049
4.214AlaThr: 4.214 ± 0.053
4.919AlaVal: 4.919 ± 0.061
0.959AlaTrp: 0.959 ± 0.022
2.073AlaTyr: 2.073 ± 0.035
0.0AlaXaa: 0.0 ± 0.0
Cys
0.521CysAla: 0.521 ± 0.017
0.167CysCys: 0.167 ± 0.008
0.583CysAsp: 0.583 ± 0.016
0.582CysGlu: 0.582 ± 0.016
0.447CysPhe: 0.447 ± 0.015
0.801CysGly: 0.801 ± 0.021
0.276CysHis: 0.276 ± 0.013
0.565CysIle: 0.565 ± 0.017
0.399CysLys: 0.399 ± 0.015
1.15CysLeu: 1.15 ± 0.027
0.142CysMet: 0.142 ± 0.009
0.398CysAsn: 0.398 ± 0.013
0.546CysPro: 0.546 ± 0.019
0.693CysGln: 0.693 ± 0.021
0.536CysArg: 0.536 ± 0.018
0.71CysSer: 0.71 ± 0.021
0.452CysThr: 0.452 ± 0.016
0.567CysVal: 0.567 ± 0.019
0.16CysTrp: 0.16 ± 0.008
0.399CysTyr: 0.399 ± 0.014
0.0CysXaa: 0.0 ± 0.0
Asp
3.198AspAla: 3.198 ± 0.055
0.602AspCys: 0.602 ± 0.016
2.675AspAsp: 2.675 ± 0.089
3.428AspGlu: 3.428 ± 0.048
2.519AspPhe: 2.519 ± 0.045
3.501AspGly: 3.501 ± 0.089
0.946AspHis: 0.946 ± 0.021
3.425AspIle: 3.425 ± 0.049
1.966AspLys: 1.966 ± 0.035
5.948AspLeu: 5.948 ± 0.073
0.691AspMet: 0.691 ± 0.019
2.317AspAsn: 2.317 ± 0.053
2.512AspPro: 2.512 ± 0.036
2.596AspGln: 2.596 ± 0.04
2.884AspArg: 2.884 ± 0.039
3.329AspSer: 3.329 ± 0.054
2.586AspThr: 2.586 ± 0.062
3.032AspVal: 3.032 ± 0.056
0.922AspTrp: 0.922 ± 0.024
1.93AspTyr: 1.93 ± 0.029
0.0AspXaa: 0.0 ± 0.0
Glu
5.363GluAla: 5.363 ± 0.065
0.495GluCys: 0.495 ± 0.018
3.313GluAsp: 3.313 ± 0.049
4.386GluGlu: 4.386 ± 0.072
2.721GluPhe: 2.721 ± 0.041
3.615GluGly: 3.615 ± 0.055
1.013GluHis: 1.013 ± 0.026
5.36GluIle: 5.36 ± 0.067
3.871GluLys: 3.871 ± 0.055
6.989GluLeu: 6.989 ± 0.07
1.46GluMet: 1.46 ± 0.027
3.524GluAsn: 3.524 ± 0.05
2.704GluPro: 2.704 ± 0.061
4.099GluGln: 4.099 ± 0.061
3.421GluArg: 3.421 ± 0.057
3.844GluSer: 3.844 ± 0.058
4.192GluThr: 4.192 ± 0.06
4.51GluVal: 4.51 ± 0.05
0.844GluTrp: 0.844 ± 0.02
1.934GluTyr: 1.934 ± 0.037
0.0GluXaa: 0.0 ± 0.0
Phe
2.698PheAla: 2.698 ± 0.041
0.543PheCys: 0.543 ± 0.018
2.346PheAsp: 2.346 ± 0.046
2.599PheGlu: 2.599 ± 0.037
1.738PhePhe: 1.738 ± 0.037
2.9PheGly: 2.9 ± 0.059
0.707PheHis: 0.707 ± 0.019
2.597PheIle: 2.597 ± 0.046
1.856PheLys: 1.856 ± 0.037
4.146PheLeu: 4.146 ± 0.045
0.68PheMet: 0.68 ± 0.02
2.026PheAsn: 2.026 ± 0.039
1.964PhePro: 1.964 ± 0.031
1.92PheGln: 1.92 ± 0.033
1.794PheArg: 1.794 ± 0.03
3.268PheSer: 3.268 ± 0.055
2.257PheThr: 2.257 ± 0.036
2.561PheVal: 2.561 ± 0.04
0.742PheTrp: 0.742 ± 0.02
1.448PheTyr: 1.448 ± 0.032
0.0PheXaa: 0.0 ± 0.0
Gly
3.953GlyAla: 3.953 ± 0.073
0.792GlyCys: 0.792 ± 0.019
3.504GlyAsp: 3.504 ± 0.085
4.621GlyGlu: 4.621 ± 0.065
3.052GlyPhe: 3.052 ± 0.049
4.975GlyGly: 4.975 ± 0.129
1.119GlyHis: 1.119 ± 0.033
4.971GlyIle: 4.971 ± 0.054
3.647GlyLys: 3.647 ± 0.048
6.893GlyLeu: 6.893 ± 0.089
1.417GlyMet: 1.417 ± 0.028
3.318GlyAsn: 3.318 ± 0.102
1.218GlyPro: 1.218 ± 0.03
3.04GlyGln: 3.04 ± 0.047
2.975GlyArg: 2.975 ± 0.042
4.048GlySer: 4.048 ± 0.053
3.81GlyThr: 3.81 ± 0.076
4.674GlyVal: 4.674 ± 0.063
1.115GlyTrp: 1.115 ± 0.024
2.39GlyTyr: 2.39 ± 0.043
0.0GlyXaa: 0.0 ± 0.0
His
0.949HisAla: 0.949 ± 0.023
0.314HisCys: 0.314 ± 0.012
0.703HisAsp: 0.703 ± 0.021
0.879HisGlu: 0.879 ± 0.023
0.831HisPhe: 0.831 ± 0.024
0.945HisGly: 0.945 ± 0.023
0.608HisHis: 0.608 ± 0.019
0.956HisIle: 0.956 ± 0.025
0.742HisLys: 0.742 ± 0.022
2.356HisLeu: 2.356 ± 0.046
0.22HisMet: 0.22 ± 0.012
0.706HisAsn: 0.706 ± 0.022
1.423HisPro: 1.423 ± 0.032
1.395HisGln: 1.395 ± 0.036
1.093HisArg: 1.093 ± 0.024
1.22HisSer: 1.22 ± 0.028
0.854HisThr: 0.854 ± 0.024
0.726HisVal: 0.726 ± 0.019
0.347HisTrp: 0.347 ± 0.012
0.674HisTyr: 0.674 ± 0.021
0.0HisXaa: 0.0 ± 0.0
Ile
6.043IleAla: 6.043 ± 0.066
0.739IleCys: 0.739 ± 0.021
3.833IleAsp: 3.833 ± 0.05
4.812IleGlu: 4.812 ± 0.056
2.765IlePhe: 2.765 ± 0.048
4.439IleGly: 4.439 ± 0.051
1.236IleHis: 1.236 ± 0.024
4.36IleIle: 4.36 ± 0.06
3.241IleLys: 3.241 ± 0.052
7.28IleLeu: 7.28 ± 0.086
0.83IleMet: 0.83 ± 0.023
3.382IleAsn: 3.382 ± 0.067
3.82IlePro: 3.82 ± 0.053
3.389IleGln: 3.389 ± 0.048
3.182IleArg: 3.182 ± 0.046
4.736IleSer: 4.736 ± 0.054
3.926IleThr: 3.926 ± 0.067
4.281IleVal: 4.281 ± 0.052
0.86IleTrp: 0.86 ± 0.021
2.012IleTyr: 2.012 ± 0.035
0.0IleXaa: 0.0 ± 0.0
Lys
3.815LysAla: 3.815 ± 0.053
0.354LysCys: 0.354 ± 0.014
2.064LysAsp: 2.064 ± 0.042
2.604LysGlu: 2.604 ± 0.049
1.773LysPhe: 1.773 ± 0.034
2.557LysGly: 2.557 ± 0.042
0.809LysHis: 0.809 ± 0.02
3.85LysIle: 3.85 ± 0.058
2.648LysLys: 2.648 ± 0.055
5.462LysLeu: 5.462 ± 0.071
0.984LysMet: 0.984 ± 0.023
2.279LysAsn: 2.279 ± 0.041
2.567LysPro: 2.567 ± 0.049
3.031LysGln: 3.031 ± 0.049
2.504LysArg: 2.504 ± 0.044
3.191LysSer: 3.191 ± 0.052
3.38LysThr: 3.38 ± 0.046
3.128LysVal: 3.128 ± 0.045
0.512LysTrp: 0.512 ± 0.017
1.389LysTyr: 1.389 ± 0.03
0.0LysXaa: 0.0 ± 0.0
Leu
8.278LeuAla: 8.278 ± 0.082
1.004LeuCys: 1.004 ± 0.022
5.422LeuAsp: 5.422 ± 0.061
8.048LeuGlu: 8.048 ± 0.073
3.968LeuPhe: 3.968 ± 0.057
7.228LeuGly: 7.228 ± 0.074
1.752LeuHis: 1.752 ± 0.035
7.222LeuIle: 7.222 ± 0.071
6.246LeuLys: 6.246 ± 0.081
10.253LeuLeu: 10.253 ± 0.108
2.135LeuMet: 2.135 ± 0.034
5.196LeuAsn: 5.196 ± 0.054
4.994LeuPro: 4.994 ± 0.051
5.406LeuGln: 5.406 ± 0.064
5.069LeuArg: 5.069 ± 0.055
7.987LeuSer: 7.987 ± 0.071
6.739LeuThr: 6.739 ± 0.072
6.436LeuVal: 6.436 ± 0.062
1.415LeuTrp: 1.415 ± 0.038
2.762LeuTyr: 2.762 ± 0.046
0.0LeuXaa: 0.0 ± 0.0
Met
1.522MetAla: 1.522 ± 0.034
0.11MetCys: 0.11 ± 0.007
0.724MetAsp: 0.724 ± 0.021
0.977MetGlu: 0.977 ± 0.025
0.585MetPhe: 0.585 ± 0.016
1.458MetGly: 1.458 ± 0.033
0.214MetHis: 0.214 ± 0.011
1.331MetIle: 1.331 ± 0.029
1.019MetLys: 1.019 ± 0.025
1.689MetLeu: 1.689 ± 0.029
0.448MetMet: 0.448 ± 0.015
0.948MetAsn: 0.948 ± 0.021
0.768MetPro: 0.768 ± 0.022
0.8MetGln: 0.8 ± 0.021
0.882MetArg: 0.882 ± 0.022
1.405MetSer: 1.405 ± 0.038
1.247MetThr: 1.247 ± 0.027
1.186MetVal: 1.186 ± 0.027
0.137MetTrp: 0.137 ± 0.008
0.363MetTyr: 0.363 ± 0.013
0.0MetXaa: 0.0 ± 0.0
Asn
2.754AsnAla: 2.754 ± 0.044
0.576AsnCys: 0.576 ± 0.018
2.258AsnAsp: 2.258 ± 0.071
2.059AsnGlu: 2.059 ± 0.04
2.028AsnPhe: 2.028 ± 0.042
2.785AsnGly: 2.785 ± 0.079
1.002AsnHis: 1.002 ± 0.028
3.123AsnIle: 3.123 ± 0.065
1.774AsnLys: 1.774 ± 0.037
5.914AsnLeu: 5.914 ± 0.096
0.599AsnMet: 0.599 ± 0.02
2.262AsnAsn: 2.262 ± 0.06
3.135AsnPro: 3.135 ± 0.045
3.161AsnGln: 3.161 ± 0.046
2.502AsnArg: 2.502 ± 0.042
3.571AsnSer: 3.571 ± 0.055
2.51AsnThr: 2.51 ± 0.051
2.146AsnVal: 2.146 ± 0.038
0.861AsnTrp: 0.861 ± 0.021
1.594AsnTyr: 1.594 ± 0.033
0.0AsnXaa: 0.0 ± 0.0
Pro
2.635ProAla: 2.635 ± 0.05
0.36ProCys: 0.36 ± 0.014
3.147ProAsp: 3.147 ± 0.055
4.428ProGlu: 4.428 ± 0.074
1.774ProPhe: 1.774 ± 0.03
2.775ProGly: 2.775 ± 0.045
0.864ProHis: 0.864 ± 0.024
3.104ProIle: 3.104 ± 0.043
2.18ProLys: 2.18 ± 0.041
4.56ProLeu: 4.56 ± 0.05
0.748ProMet: 0.748 ± 0.019
2.363ProAsn: 2.363 ± 0.042
2.276ProPro: 2.276 ± 0.046
2.781ProGln: 2.781 ± 0.041
1.676ProArg: 1.676 ± 0.036
3.008ProSer: 3.008 ± 0.048
3.101ProThr: 3.101 ± 0.078
3.155ProVal: 3.155 ± 0.045
0.56ProTrp: 0.56 ± 0.019
1.268ProTyr: 1.268 ± 0.026
0.0ProXaa: 0.0 ± 0.0
Gln
4.758GlnAla: 4.758 ± 0.06
0.364GlnCys: 0.364 ± 0.014
2.323GlnAsp: 2.323 ± 0.039
3.568GlnGlu: 3.568 ± 0.049
2.153GlnPhe: 2.153 ± 0.04
3.389GlnGly: 3.389 ± 0.052
0.928GlnHis: 0.928 ± 0.024
3.823GlnIle: 3.823 ± 0.042
3.055GlnLys: 3.055 ± 0.048
6.458GlnLeu: 6.458 ± 0.081
1.108GlnMet: 1.108 ± 0.023
2.461GlnAsn: 2.461 ± 0.039
2.759GlnPro: 2.759 ± 0.048
4.175GlnGln: 4.175 ± 0.081
2.774GlnArg: 2.774 ± 0.039
3.33GlnSer: 3.33 ± 0.047
3.555GlnThr: 3.555 ± 0.06
4.014GlnVal: 4.014 ± 0.05
0.756GlnTrp: 0.756 ± 0.022
1.413GlnTyr: 1.413 ± 0.029
0.0GlnXaa: 0.0 ± 0.0
Arg
2.667ArgAla: 2.667 ± 0.042
0.495ArgCys: 0.495 ± 0.017
2.405ArgAsp: 2.405 ± 0.035
3.277ArgGlu: 3.277 ± 0.044
2.174ArgPhe: 2.174 ± 0.038
2.857ArgGly: 2.857 ± 0.042
0.948ArgHis: 0.948 ± 0.024
3.242ArgIle: 3.242 ± 0.042
2.233ArgLys: 2.233 ± 0.038
5.569ArgLeu: 5.569 ± 0.065
0.962ArgMet: 0.962 ± 0.023
2.0ArgAsn: 2.0 ± 0.033
1.849ArgPro: 1.849 ± 0.037
3.276ArgGln: 3.276 ± 0.046
2.843ArgArg: 2.843 ± 0.053
3.278ArgSer: 3.278 ± 0.052
2.441ArgThr: 2.441 ± 0.037
3.27ArgVal: 3.27 ± 0.042
0.85ArgTrp: 0.85 ± 0.028
1.833ArgTyr: 1.833 ± 0.032
0.0ArgXaa: 0.0 ± 0.0
Ser
4.069SerAla: 4.069 ± 0.048
0.668SerCys: 0.668 ± 0.022
3.579SerAsp: 3.579 ± 0.048
4.812SerGlu: 4.812 ± 0.065
2.663SerPhe: 2.663 ± 0.042
4.758SerGly: 4.758 ± 0.079
1.27SerHis: 1.27 ± 0.024
4.143SerIle: 4.143 ± 0.053
2.818SerLys: 2.818 ± 0.047
7.45SerLeu: 7.45 ± 0.08
1.174SerMet: 1.174 ± 0.024
2.915SerAsn: 2.915 ± 0.042
3.734SerPro: 3.734 ± 0.054
4.345SerGln: 4.345 ± 0.062
3.355SerArg: 3.355 ± 0.044
5.01SerSer: 5.01 ± 0.074
3.629SerThr: 3.629 ± 0.049
4.083SerVal: 4.083 ± 0.049
0.916SerTrp: 0.916 ± 0.022
1.914SerTyr: 1.914 ± 0.036
0.0SerXaa: 0.0 ± 0.0
Thr
4.424ThrAla: 4.424 ± 0.063
0.493ThrCys: 0.493 ± 0.016
2.908ThrAsp: 2.908 ± 0.059
3.854ThrGlu: 3.854 ± 0.055
2.221ThrPhe: 2.221 ± 0.047
4.374ThrGly: 4.374 ± 0.073
1.117ThrHis: 1.117 ± 0.028
3.865ThrIle: 3.865 ± 0.055
2.03ThrLys: 2.03 ± 0.038
6.698ThrLeu: 6.698 ± 0.07
0.705ThrMet: 0.705 ± 0.023
2.196ThrAsn: 2.196 ± 0.042
3.768ThrPro: 3.768 ± 0.089
3.403ThrGln: 3.403 ± 0.05
2.356ThrArg: 2.356 ± 0.034
3.622ThrSer: 3.622 ± 0.05
3.464ThrThr: 3.464 ± 0.065
4.303ThrVal: 4.303 ± 0.068
0.739ThrTrp: 0.739 ± 0.02
1.557ThrTyr: 1.557 ± 0.03
0.0ThrXaa: 0.0 ± 0.0
Val
4.917ValAla: 4.917 ± 0.05
0.712ValCys: 0.712 ± 0.02
3.391ValAsp: 3.391 ± 0.056
4.791ValGlu: 4.791 ± 0.052
2.585ValPhe: 2.585 ± 0.036
4.534ValGly: 4.534 ± 0.064
1.017ValHis: 1.017 ± 0.024
4.453ValIle: 4.453 ± 0.056
3.449ValLys: 3.449 ± 0.052
6.145ValLeu: 6.145 ± 0.056
1.303ValMet: 1.303 ± 0.031
3.059ValAsn: 3.059 ± 0.047
2.556ValPro: 2.556 ± 0.042
2.82ValGln: 2.82 ± 0.04
3.042ValArg: 3.042 ± 0.044
4.377ValSer: 4.377 ± 0.056
3.56ValThr: 3.56 ± 0.052
4.387ValVal: 4.387 ± 0.062
0.845ValTrp: 0.845 ± 0.024
1.877ValTyr: 1.877 ± 0.034
0.0ValXaa: 0.0 ± 0.0
Trp
0.786TrpAla: 0.786 ± 0.02
0.156TrpCys: 0.156 ± 0.008
0.668TrpAsp: 0.668 ± 0.023
1.013TrpGlu: 1.013 ± 0.025
0.615TrpPhe: 0.615 ± 0.019
1.037TrpGly: 1.037 ± 0.029
0.284TrpHis: 0.284 ± 0.012
0.965TrpIle: 0.965 ± 0.024
0.837TrpLys: 0.837 ± 0.026
1.748TrpLeu: 1.748 ± 0.032
0.357TrpMet: 0.357 ± 0.015
0.694TrpAsn: 0.694 ± 0.02
0.33TrpPro: 0.33 ± 0.013
0.955TrpGln: 0.955 ± 0.029
0.746TrpArg: 0.746 ± 0.02
0.841TrpSer: 0.841 ± 0.022
0.619TrpThr: 0.619 ± 0.019
1.003TrpVal: 1.003 ± 0.021
0.217TrpTrp: 0.217 ± 0.012
0.417TrpTyr: 0.417 ± 0.014
0.0TrpXaa: 0.0 ± 0.0
Tyr
1.781TyrAla: 1.781 ± 0.033
0.391TyrCys: 0.391 ± 0.016
1.464TyrAsp: 1.464 ± 0.031
1.74TyrGlu: 1.74 ± 0.034
1.426TyrPhe: 1.426 ± 0.025
1.982TyrGly: 1.982 ± 0.035
0.716TyrHis: 0.716 ± 0.021
1.753TyrIle: 1.753 ± 0.032
1.319TyrLys: 1.319 ± 0.03
3.408TyrLeu: 3.408 ± 0.045
0.401TyrMet: 0.401 ± 0.017
1.336TyrAsn: 1.336 ± 0.031
1.651TyrPro: 1.651 ± 0.03
2.31TyrGln: 2.31 ± 0.041
1.964TyrArg: 1.964 ± 0.034
2.076TyrSer: 2.076 ± 0.042
1.558TyrThr: 1.558 ± 0.032
1.438TyrVal: 1.438 ± 0.031
0.532TyrTrp: 0.532 ± 0.017
1.191TyrTyr: 1.191 ± 0.029
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 6110 proteins (1960410 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