Amino acid dipepetide frequency for Blastomonas sp. AAP25

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
18.231AlaAla: 18.231 ± 0.207
1.112AlaCys: 1.112 ± 0.035
7.896AlaAsp: 7.896 ± 0.095
7.423AlaGlu: 7.423 ± 0.097
4.365AlaPhe: 4.365 ± 0.062
11.189AlaGly: 11.189 ± 0.117
2.337AlaHis: 2.337 ± 0.045
7.037AlaIle: 7.037 ± 0.086
3.914AlaLys: 3.914 ± 0.073
13.827AlaLeu: 13.827 ± 0.145
4.183AlaMet: 4.183 ± 0.071
3.325AlaAsn: 3.325 ± 0.063
6.171AlaPro: 6.171 ± 0.08
4.937AlaGln: 4.937 ± 0.062
9.586AlaArg: 9.586 ± 0.107
7.056AlaSer: 7.056 ± 0.099
6.252AlaThr: 6.252 ± 0.098
8.384AlaVal: 8.384 ± 0.112
1.641AlaTrp: 1.641 ± 0.04
2.562AlaTyr: 2.562 ± 0.045
0.0AlaXaa: 0.0 ± 0.0
Cys
1.058CysAla: 1.058 ± 0.03
0.093CysCys: 0.093 ± 0.009
0.583CysAsp: 0.583 ± 0.022
0.404CysGlu: 0.404 ± 0.021
0.307CysPhe: 0.307 ± 0.017
0.874CysGly: 0.874 ± 0.033
0.236CysHis: 0.236 ± 0.019
0.398CysIle: 0.398 ± 0.02
0.168CysLys: 0.168 ± 0.012
0.752CysLeu: 0.752 ± 0.024
0.167CysMet: 0.167 ± 0.011
0.229CysAsn: 0.229 ± 0.015
0.456CysPro: 0.456 ± 0.024
0.226CysGln: 0.226 ± 0.014
0.543CysArg: 0.543 ± 0.022
0.461CysSer: 0.461 ± 0.019
0.452CysThr: 0.452 ± 0.021
0.556CysVal: 0.556 ± 0.022
0.106CysTrp: 0.106 ± 0.009
0.186CysTyr: 0.186 ± 0.014
0.0CysXaa: 0.0 ± 0.0
Asp
7.825AspAla: 7.825 ± 0.082
0.516AspCys: 0.516 ± 0.022
3.411AspAsp: 3.411 ± 0.064
3.259AspGlu: 3.259 ± 0.059
2.314AspPhe: 2.314 ± 0.051
5.618AspGly: 5.618 ± 0.087
1.321AspHis: 1.321 ± 0.042
3.241AspIle: 3.241 ± 0.056
1.757AspLys: 1.757 ± 0.047
5.73AspLeu: 5.73 ± 0.071
1.615AspMet: 1.615 ± 0.038
1.523AspAsn: 1.523 ± 0.04
3.86AspPro: 3.86 ± 0.062
1.988AspGln: 1.988 ± 0.04
4.456AspArg: 4.456 ± 0.065
2.622AspSer: 2.622 ± 0.05
2.859AspThr: 2.859 ± 0.049
4.106AspVal: 4.106 ± 0.06
1.144AspTrp: 1.144 ± 0.032
1.637AspTyr: 1.637 ± 0.035
0.0AspXaa: 0.0 ± 0.0
Glu
7.385GluAla: 7.385 ± 0.103
0.353GluCys: 0.353 ± 0.018
2.711GluAsp: 2.711 ± 0.052
2.747GluGlu: 2.747 ± 0.056
1.656GluPhe: 1.656 ± 0.04
4.25GluGly: 4.25 ± 0.06
1.151GluHis: 1.151 ± 0.034
3.007GluIle: 3.007 ± 0.053
1.854GluLys: 1.854 ± 0.048
4.852GluLeu: 4.852 ± 0.067
1.54GluMet: 1.54 ± 0.037
1.363GluAsn: 1.363 ± 0.033
2.488GluPro: 2.488 ± 0.049
2.211GluGln: 2.211 ± 0.041
4.582GluArg: 4.582 ± 0.063
2.28GluSer: 2.28 ± 0.045
3.087GluThr: 3.087 ± 0.058
3.31GluVal: 3.31 ± 0.055
0.749GluTrp: 0.749 ± 0.024
1.038GluTyr: 1.038 ± 0.033
0.0GluXaa: 0.0 ± 0.0
Phe
5.037PheAla: 5.037 ± 0.064
0.324PheCys: 0.324 ± 0.018
2.877PheAsp: 2.877 ± 0.05
1.994PheGlu: 1.994 ± 0.043
1.336PhePhe: 1.336 ± 0.034
3.851PheGly: 3.851 ± 0.075
0.695PheHis: 0.695 ± 0.022
1.651PheIle: 1.651 ± 0.037
0.908PheLys: 0.908 ± 0.026
3.024PheLeu: 3.024 ± 0.054
0.828PheMet: 0.828 ± 0.023
1.169PheAsn: 1.169 ± 0.04
1.534PhePro: 1.534 ± 0.039
0.926PheGln: 0.926 ± 0.028
2.067PheArg: 2.067 ± 0.048
2.092PheSer: 2.092 ± 0.046
2.184PheThr: 2.184 ± 0.055
2.608PheVal: 2.608 ± 0.047
0.536PheTrp: 0.536 ± 0.024
0.939PheTyr: 0.939 ± 0.032
0.0PheXaa: 0.0 ± 0.0
Gly
9.918GlyAla: 9.918 ± 0.13
0.899GlyCys: 0.899 ± 0.027
5.053GlyAsp: 5.053 ± 0.079
4.836GlyGlu: 4.836 ± 0.067
3.864GlyPhe: 3.864 ± 0.058
8.191GlyGly: 8.191 ± 0.128
1.843GlyHis: 1.843 ± 0.044
4.517GlyIle: 4.517 ± 0.072
3.413GlyLys: 3.413 ± 0.067
8.823GlyLeu: 8.823 ± 0.1
2.468GlyMet: 2.468 ± 0.049
2.467GlyAsn: 2.467 ± 0.055
3.62GlyPro: 3.62 ± 0.051
3.207GlyGln: 3.207 ± 0.052
5.931GlyArg: 5.931 ± 0.078
5.117GlySer: 5.117 ± 0.09
4.919GlyThr: 4.919 ± 0.09
6.01GlyVal: 6.01 ± 0.078
1.661GlyTrp: 1.661 ± 0.046
2.401GlyTyr: 2.401 ± 0.055
0.0GlyXaa: 0.0 ± 0.0
His
2.381HisAla: 2.381 ± 0.05
0.235HisCys: 0.235 ± 0.015
1.264HisAsp: 1.264 ± 0.035
0.944HisGlu: 0.944 ± 0.027
0.827HisPhe: 0.827 ± 0.026
1.935HisGly: 1.935 ± 0.042
0.559HisHis: 0.559 ± 0.021
1.05HisIle: 1.05 ± 0.033
0.482HisLys: 0.482 ± 0.021
1.857HisLeu: 1.857 ± 0.039
0.479HisMet: 0.479 ± 0.02
0.495HisAsn: 0.495 ± 0.024
1.27HisPro: 1.27 ± 0.034
0.588HisGln: 0.588 ± 0.024
1.365HisArg: 1.365 ± 0.041
0.98HisSer: 0.98 ± 0.028
0.696HisThr: 0.696 ± 0.027
1.399HisVal: 1.399 ± 0.041
0.418HisTrp: 0.418 ± 0.017
0.598HisTyr: 0.598 ± 0.025
0.0HisXaa: 0.0 ± 0.0
Ile
8.296IleAla: 8.296 ± 0.098
0.475IleCys: 0.475 ± 0.019
4.17IleAsp: 4.17 ± 0.059
3.568IleGlu: 3.568 ± 0.065
1.556IlePhe: 1.556 ± 0.036
5.426IleGly: 5.426 ± 0.085
0.867IleHis: 0.867 ± 0.03
2.529IleIle: 2.529 ± 0.051
1.357IleLys: 1.357 ± 0.032
3.743IleLeu: 3.743 ± 0.066
1.027IleMet: 1.027 ± 0.031
1.543IleAsn: 1.543 ± 0.039
2.257IlePro: 2.257 ± 0.043
1.205IleGln: 1.205 ± 0.035
3.253IleArg: 3.253 ± 0.06
2.87IleSer: 2.87 ± 0.054
2.892IleThr: 2.892 ± 0.055
3.994IleVal: 3.994 ± 0.054
0.701IleTrp: 0.701 ± 0.025
1.047IleTyr: 1.047 ± 0.029
0.0IleXaa: 0.0 ± 0.0
Lys
4.131LysAla: 4.131 ± 0.068
0.17LysCys: 0.17 ± 0.011
1.551LysAsp: 1.551 ± 0.043
1.168LysGlu: 1.168 ± 0.036
0.836LysPhe: 0.836 ± 0.028
2.593LysGly: 2.593 ± 0.055
0.549LysHis: 0.549 ± 0.022
1.501LysIle: 1.501 ± 0.041
1.069LysLys: 1.069 ± 0.04
3.063LysLeu: 3.063 ± 0.058
0.81LysMet: 0.81 ± 0.028
0.714LysAsn: 0.714 ± 0.029
2.045LysPro: 2.045 ± 0.048
0.963LysGln: 0.963 ± 0.029
2.175LysArg: 2.175 ± 0.049
1.527LysSer: 1.527 ± 0.039
1.703LysThr: 1.703 ± 0.034
2.29LysVal: 2.29 ± 0.053
0.376LysTrp: 0.376 ± 0.018
0.559LysTyr: 0.559 ± 0.022
0.0LysXaa: 0.0 ± 0.0
Leu
14.232LeuAla: 14.232 ± 0.13
0.805LeuCys: 0.805 ± 0.028
6.081LeuAsp: 6.081 ± 0.081
4.724LeuGlu: 4.724 ± 0.068
3.583LeuPhe: 3.583 ± 0.071
8.404LeuGly: 8.404 ± 0.084
1.769LeuHis: 1.769 ± 0.049
5.018LeuIle: 5.018 ± 0.077
3.162LeuLys: 3.162 ± 0.054
8.921LeuLeu: 8.921 ± 0.108
2.197LeuMet: 2.197 ± 0.042
2.416LeuAsn: 2.416 ± 0.05
5.492LeuPro: 5.492 ± 0.079
2.698LeuGln: 2.698 ± 0.05
6.248LeuArg: 6.248 ± 0.08
5.771LeuSer: 5.771 ± 0.069
5.465LeuThr: 5.465 ± 0.07
7.082LeuVal: 7.082 ± 0.096
1.207LeuTrp: 1.207 ± 0.033
1.935LeuTyr: 1.935 ± 0.044
0.0LeuXaa: 0.0 ± 0.0
Met
3.6MetAla: 3.6 ± 0.055
0.193MetCys: 0.193 ± 0.014
1.31MetAsp: 1.31 ± 0.039
1.128MetGlu: 1.128 ± 0.034
0.717MetPhe: 0.717 ± 0.026
2.077MetGly: 2.077 ± 0.046
0.51MetHis: 0.51 ± 0.021
1.491MetIle: 1.491 ± 0.039
0.904MetLys: 0.904 ± 0.03
2.834MetLeu: 2.834 ± 0.055
0.705MetMet: 0.705 ± 0.029
0.731MetAsn: 0.731 ± 0.022
1.572MetPro: 1.572 ± 0.033
0.931MetGln: 0.931 ± 0.03
1.882MetArg: 1.882 ± 0.043
1.43MetSer: 1.43 ± 0.032
1.91MetThr: 1.91 ± 0.039
1.794MetVal: 1.794 ± 0.04
0.235MetTrp: 0.235 ± 0.014
0.31MetTyr: 0.31 ± 0.015
0.0MetXaa: 0.0 ± 0.0
Asn
3.416AsnAla: 3.416 ± 0.061
0.258AsnCys: 0.258 ± 0.015
1.454AsnAsp: 1.454 ± 0.039
1.121AsnGlu: 1.121 ± 0.033
1.065AsnPhe: 1.065 ± 0.036
2.412AsnGly: 2.412 ± 0.055
0.519AsnHis: 0.519 ± 0.022
1.46AsnIle: 1.46 ± 0.032
0.603AsnLys: 0.603 ± 0.026
2.566AsnLeu: 2.566 ± 0.049
0.622AsnMet: 0.622 ± 0.021
0.743AsnAsn: 0.743 ± 0.03
1.976AsnPro: 1.976 ± 0.045
0.802AsnGln: 0.802 ± 0.027
1.898AsnArg: 1.898 ± 0.048
1.384AsnSer: 1.384 ± 0.038
1.276AsnThr: 1.276 ± 0.037
2.001AsnVal: 2.001 ± 0.044
0.41AsnTrp: 0.41 ± 0.02
0.678AsnTyr: 0.678 ± 0.03
0.0AsnXaa: 0.0 ± 0.0
Pro
6.849ProAla: 6.849 ± 0.09
0.332ProCys: 0.332 ± 0.018
3.895ProAsp: 3.895 ± 0.062
3.419ProGlu: 3.419 ± 0.056
1.942ProPhe: 1.942 ± 0.043
5.078ProGly: 5.078 ± 0.066
1.087ProHis: 1.087 ± 0.031
2.392ProIle: 2.392 ± 0.049
1.516ProLys: 1.516 ± 0.036
4.798ProLeu: 4.798 ± 0.06
1.387ProMet: 1.387 ± 0.036
1.214ProAsn: 1.214 ± 0.033
2.628ProPro: 2.628 ± 0.066
1.912ProGln: 1.912 ± 0.039
2.987ProArg: 2.987 ± 0.056
2.679ProSer: 2.679 ± 0.044
2.244ProThr: 2.244 ± 0.043
4.422ProVal: 4.422 ± 0.063
0.672ProTrp: 0.672 ± 0.023
1.103ProTyr: 1.103 ± 0.027
0.0ProXaa: 0.0 ± 0.0
Gln
4.46GlnAla: 4.46 ± 0.074
0.244GlnCys: 0.244 ± 0.015
1.589GlnAsp: 1.589 ± 0.036
1.279GlnGlu: 1.279 ± 0.034
1.215GlnPhe: 1.215 ± 0.038
2.819GlnGly: 2.819 ± 0.046
0.644GlnHis: 0.644 ± 0.022
2.063GlnIle: 2.063 ± 0.033
0.971GlnLys: 0.971 ± 0.031
3.294GlnLeu: 3.294 ± 0.055
0.986GlnMet: 0.986 ± 0.03
0.837GlnAsn: 0.837 ± 0.025
1.947GlnPro: 1.947 ± 0.042
1.362GlnGln: 1.362 ± 0.037
2.608GlnArg: 2.608 ± 0.049
1.888GlnSer: 1.888 ± 0.043
1.843GlnThr: 1.843 ± 0.035
2.367GlnVal: 2.367 ± 0.041
0.467GlnTrp: 0.467 ± 0.021
0.693GlnTyr: 0.693 ± 0.025
0.0GlnXaa: 0.0 ± 0.0
Arg
8.431ArgAla: 8.431 ± 0.103
0.525ArgCys: 0.525 ± 0.019
4.189ArgAsp: 4.189 ± 0.068
3.689ArgGlu: 3.689 ± 0.061
3.139ArgPhe: 3.139 ± 0.053
4.822ArgGly: 4.822 ± 0.064
1.574ArgHis: 1.574 ± 0.038
4.215ArgIle: 4.215 ± 0.065
2.17ArgLys: 2.17 ± 0.047
7.569ArgLeu: 7.569 ± 0.091
1.982ArgMet: 1.982 ± 0.043
2.014ArgAsn: 2.014 ± 0.04
3.389ArgPro: 3.389 ± 0.059
2.582ArgGln: 2.582 ± 0.055
4.858ArgArg: 4.858 ± 0.082
3.716ArgSer: 3.716 ± 0.062
3.481ArgThr: 3.481 ± 0.052
4.392ArgVal: 4.392 ± 0.059
1.133ArgTrp: 1.133 ± 0.035
1.794ArgTyr: 1.794 ± 0.04
0.0ArgXaa: 0.0 ± 0.0
Ser
6.649SerAla: 6.649 ± 0.093
0.438SerCys: 0.438 ± 0.02
3.303SerAsp: 3.303 ± 0.061
2.69SerGlu: 2.69 ± 0.05
2.21SerPhe: 2.21 ± 0.041
5.66SerGly: 5.66 ± 0.104
1.014SerHis: 1.014 ± 0.029
2.829SerIle: 2.829 ± 0.056
1.405SerLys: 1.405 ± 0.04
5.317SerLeu: 5.317 ± 0.079
1.354SerMet: 1.354 ± 0.033
1.503SerAsn: 1.503 ± 0.036
2.927SerPro: 2.927 ± 0.058
1.712SerGln: 1.712 ± 0.038
3.507SerArg: 3.507 ± 0.064
2.876SerSer: 2.876 ± 0.057
2.533SerThr: 2.533 ± 0.045
3.727SerVal: 3.727 ± 0.058
0.785SerTrp: 0.785 ± 0.029
1.345SerTyr: 1.345 ± 0.033
0.0SerXaa: 0.0 ± 0.0
Thr
6.414ThrAla: 6.414 ± 0.087
0.376ThrCys: 0.376 ± 0.019
2.989ThrAsp: 2.989 ± 0.045
2.489ThrGlu: 2.489 ± 0.048
1.836ThrPhe: 1.836 ± 0.052
5.695ThrGly: 5.695 ± 0.083
0.944ThrHis: 0.944 ± 0.03
2.972ThrIle: 2.972 ± 0.066
1.233ThrLys: 1.233 ± 0.035
5.678ThrLeu: 5.678 ± 0.072
1.234ThrMet: 1.234 ± 0.035
1.413ThrAsn: 1.413 ± 0.036
3.308ThrPro: 3.308 ± 0.056
1.618ThrGln: 1.618 ± 0.047
3.55ThrArg: 3.55 ± 0.057
2.777ThrSer: 2.777 ± 0.052
2.62ThrThr: 2.62 ± 0.051
3.938ThrVal: 3.938 ± 0.061
0.578ThrTrp: 0.578 ± 0.023
1.085ThrTyr: 1.085 ± 0.029
0.0ThrXaa: 0.0 ± 0.0
Val
9.015ValAla: 9.015 ± 0.098
0.556ValCys: 0.556 ± 0.022
4.225ValAsp: 4.225 ± 0.06
4.062ValGlu: 4.062 ± 0.065
2.37ValPhe: 2.37 ± 0.048
5.131ValGly: 5.131 ± 0.087
1.348ValHis: 1.348 ± 0.039
3.849ValIle: 3.849 ± 0.058
1.889ValLys: 1.889 ± 0.043
6.636ValLeu: 6.636 ± 0.091
1.82ValMet: 1.82 ± 0.041
1.956ValAsn: 1.956 ± 0.046
3.851ValPro: 3.851 ± 0.061
2.209ValGln: 2.209 ± 0.042
5.113ValArg: 5.113 ± 0.068
4.095ValSer: 4.095 ± 0.063
4.401ValThr: 4.401 ± 0.062
5.035ValVal: 5.035 ± 0.071
0.849ValTrp: 0.849 ± 0.026
1.416ValTyr: 1.416 ± 0.044
0.0ValXaa: 0.0 ± 0.0
Trp
1.418TrpAla: 1.418 ± 0.038
0.118TrpCys: 0.118 ± 0.01
0.771TrpAsp: 0.771 ± 0.024
0.589TrpGlu: 0.589 ± 0.023
0.548TrpPhe: 0.548 ± 0.02
0.973TrpGly: 0.973 ± 0.029
0.356TrpHis: 0.356 ± 0.017
0.644TrpIle: 0.644 ± 0.022
0.488TrpLys: 0.488 ± 0.022
1.751TrpLeu: 1.751 ± 0.047
0.398TrpMet: 0.398 ± 0.017
0.428TrpAsn: 0.428 ± 0.02
0.693TrpPro: 0.693 ± 0.027
0.761TrpGln: 0.761 ± 0.024
1.211TrpArg: 1.211 ± 0.035
0.863TrpSer: 0.863 ± 0.033
0.865TrpThr: 0.865 ± 0.031
0.874TrpVal: 0.874 ± 0.028
0.255TrpTrp: 0.255 ± 0.017
0.292TrpTyr: 0.292 ± 0.017
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.682TyrAla: 2.682 ± 0.042
0.233TyrCys: 0.233 ± 0.015
1.482TyrAsp: 1.482 ± 0.038
1.081TyrGlu: 1.081 ± 0.036
0.895TyrPhe: 0.895 ± 0.029
2.16TyrGly: 2.16 ± 0.05
0.498TyrHis: 0.498 ± 0.019
0.914TyrIle: 0.914 ± 0.026
0.534TyrLys: 0.534 ± 0.022
2.175TyrLeu: 2.175 ± 0.053
0.462TyrMet: 0.462 ± 0.017
0.582TyrAsn: 0.582 ± 0.021
1.069TyrPro: 1.069 ± 0.034
0.739TyrGln: 0.739 ± 0.026
1.843TyrArg: 1.843 ± 0.039
1.301TyrSer: 1.301 ± 0.036
1.064TyrThr: 1.064 ± 0.034
1.535TyrVal: 1.535 ± 0.034
0.37TyrTrp: 0.37 ± 0.02
0.562TyrTyr: 0.562 ± 0.025
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 3685 proteins (1174460 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