Amino acid dipepetide frequency for Streptomyces seoulensis

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
20.458AlaAla: 20.458 ± 0.161
1.033AlaCys: 1.033 ± 0.024
8.339AlaAsp: 8.339 ± 0.072
9.214AlaGlu: 9.214 ± 0.108
3.456AlaPhe: 3.456 ± 0.052
12.994AlaGly: 12.994 ± 0.11
3.017AlaHis: 3.017 ± 0.042
3.191AlaIle: 3.191 ± 0.056
3.042AlaLys: 3.042 ± 0.07
14.963AlaLeu: 14.963 ± 0.129
2.407AlaMet: 2.407 ± 0.036
1.931AlaAsn: 1.931 ± 0.037
7.525AlaPro: 7.525 ± 0.105
3.693AlaGln: 3.693 ± 0.054
10.571AlaArg: 10.571 ± 0.1
5.795AlaSer: 5.795 ± 0.06
6.924AlaThr: 6.924 ± 0.072
12.204AlaVal: 12.204 ± 0.1
1.827AlaTrp: 1.827 ± 0.032
2.848AlaTyr: 2.848 ± 0.044
0.0AlaXaa: 0.0 ± 0.0
Cys
1.121CysAla: 1.121 ± 0.027
0.089CysCys: 0.089 ± 0.007
0.446CysAsp: 0.446 ± 0.016
0.383CysGlu: 0.383 ± 0.016
0.214CysPhe: 0.214 ± 0.011
0.975CysGly: 0.975 ± 0.027
0.185CysHis: 0.185 ± 0.01
0.13CysIle: 0.13 ± 0.008
0.099CysLys: 0.099 ± 0.008
0.726CysLeu: 0.726 ± 0.02
0.117CysMet: 0.117 ± 0.007
0.139CysAsn: 0.139 ± 0.009
0.489CysPro: 0.489 ± 0.019
0.155CysGln: 0.155 ± 0.009
0.589CysArg: 0.589 ± 0.017
0.406CysSer: 0.406 ± 0.016
0.491CysThr: 0.491 ± 0.017
0.664CysVal: 0.664 ± 0.018
0.123CysTrp: 0.123 ± 0.008
0.134CysTyr: 0.134 ± 0.007
0.0CysXaa: 0.0 ± 0.0
Asp
7.717AspAla: 7.717 ± 0.075
0.403AspCys: 0.403 ± 0.017
3.559AspAsp: 3.559 ± 0.053
3.889AspGlu: 3.889 ± 0.046
1.669AspPhe: 1.669 ± 0.03
6.293AspGly: 6.293 ± 0.067
1.433AspHis: 1.433 ± 0.028
1.866AspIle: 1.866 ± 0.039
1.31AspLys: 1.31 ± 0.035
6.255AspLeu: 6.255 ± 0.063
0.807AspMet: 0.807 ± 0.022
0.969AspAsn: 0.969 ± 0.022
4.549AspPro: 4.549 ± 0.049
1.556AspGln: 1.556 ± 0.033
4.968AspArg: 4.968 ± 0.056
2.591AspSer: 2.591 ± 0.042
3.45AspThr: 3.45 ± 0.046
4.579AspVal: 4.579 ± 0.05
1.048AspTrp: 1.048 ± 0.024
1.092AspTyr: 1.092 ± 0.026
0.0AspXaa: 0.0 ± 0.0
Glu
7.291GluAla: 7.291 ± 0.096
0.355GluCys: 0.355 ± 0.013
2.914GluAsp: 2.914 ± 0.042
3.688GluGlu: 3.688 ± 0.068
1.465GluPhe: 1.465 ± 0.03
4.509GluGly: 4.509 ± 0.053
1.586GluHis: 1.586 ± 0.028
2.197GluIle: 2.197 ± 0.039
1.449GluLys: 1.449 ± 0.032
6.818GluLeu: 6.818 ± 0.076
0.887GluMet: 0.887 ± 0.022
1.063GluAsn: 1.063 ± 0.025
3.514GluPro: 3.514 ± 0.054
2.096GluGln: 2.096 ± 0.037
5.666GluArg: 5.666 ± 0.069
2.588GluSer: 2.588 ± 0.043
2.928GluThr: 2.928 ± 0.044
4.571GluVal: 4.571 ± 0.057
0.736GluTrp: 0.736 ± 0.021
1.161GluTyr: 1.161 ± 0.025
0.0GluXaa: 0.0 ± 0.0
Phe
3.714PheAla: 3.714 ± 0.044
0.272PheCys: 0.272 ± 0.013
1.908PheAsp: 1.908 ± 0.036
1.451PheGlu: 1.451 ± 0.029
0.853PhePhe: 0.853 ± 0.026
3.048PheGly: 3.048 ± 0.049
0.618PheHis: 0.618 ± 0.017
0.696PheIle: 0.696 ± 0.018
0.52PheLys: 0.52 ± 0.017
2.609PheLeu: 2.609 ± 0.044
0.414PheMet: 0.414 ± 0.016
0.549PheAsn: 0.549 ± 0.018
1.398PhePro: 1.398 ± 0.026
0.691PheGln: 0.691 ± 0.019
1.8PheArg: 1.8 ± 0.035
1.425PheSer: 1.425 ± 0.031
2.012PheThr: 2.012 ± 0.03
2.18PheVal: 2.18 ± 0.037
0.404PheTrp: 0.404 ± 0.014
0.577PheTyr: 0.577 ± 0.022
0.0PheXaa: 0.0 ± 0.0
Gly
11.235GlyAla: 11.235 ± 0.094
0.823GlyCys: 0.823 ± 0.024
5.223GlyAsp: 5.223 ± 0.063
5.212GlyGlu: 5.212 ± 0.062
2.93GlyPhe: 2.93 ± 0.046
8.766GlyGly: 8.766 ± 0.103
2.386GlyHis: 2.386 ± 0.039
3.358GlyIle: 3.358 ± 0.047
2.559GlyLys: 2.559 ± 0.05
9.463GlyLeu: 9.463 ± 0.072
2.027GlyMet: 2.027 ± 0.035
1.847GlyAsn: 1.847 ± 0.049
5.122GlyPro: 5.122 ± 0.067
2.673GlyGln: 2.673 ± 0.044
7.808GlyArg: 7.808 ± 0.086
5.141GlySer: 5.141 ± 0.073
6.569GlyThr: 6.569 ± 0.082
7.789GlyVal: 7.789 ± 0.064
1.718GlyTrp: 1.718 ± 0.03
2.324GlyTyr: 2.324 ± 0.038
0.0GlyXaa: 0.0 ± 0.0
His
2.762HisAla: 2.762 ± 0.039
0.19HisCys: 0.19 ± 0.011
1.343HisAsp: 1.343 ± 0.032
1.216HisGlu: 1.216 ± 0.025
0.617HisPhe: 0.617 ± 0.017
2.417HisGly: 2.417 ± 0.037
0.732HisHis: 0.732 ± 0.023
0.653HisIle: 0.653 ± 0.021
0.391HisLys: 0.391 ± 0.015
2.43HisLeu: 2.43 ± 0.036
0.356HisMet: 0.356 ± 0.014
0.355HisAsn: 0.355 ± 0.015
1.864HisPro: 1.864 ± 0.034
0.648HisGln: 0.648 ± 0.021
2.13HisArg: 2.13 ± 0.041
1.038HisSer: 1.038 ± 0.027
1.45HisThr: 1.45 ± 0.024
1.714HisVal: 1.714 ± 0.033
0.375HisTrp: 0.375 ± 0.015
0.473HisTyr: 0.473 ± 0.016
0.0HisXaa: 0.0 ± 0.0
Ile
4.477IleAla: 4.477 ± 0.056
0.283IleCys: 0.283 ± 0.013
2.179IleAsp: 2.179 ± 0.037
1.91IleGlu: 1.91 ± 0.04
0.656IlePhe: 0.656 ± 0.023
3.508IleGly: 3.508 ± 0.051
0.574IleHis: 0.574 ± 0.021
0.84IleIle: 0.84 ± 0.024
0.757IleLys: 0.757 ± 0.025
2.306IleLeu: 2.306 ± 0.041
0.421IleMet: 0.421 ± 0.016
0.652IleAsn: 0.652 ± 0.018
1.703IlePro: 1.703 ± 0.03
0.727IleGln: 0.727 ± 0.019
2.079IleArg: 2.079 ± 0.035
1.53IleSer: 1.53 ± 0.034
2.128IleThr: 2.128 ± 0.038
2.695IleVal: 2.695 ± 0.042
0.357IleTrp: 0.357 ± 0.015
0.501IleTyr: 0.501 ± 0.02
0.0IleXaa: 0.0 ± 0.0
Lys
3.037LysAla: 3.037 ± 0.067
0.122LysCys: 0.122 ± 0.009
1.418LysAsp: 1.418 ± 0.034
1.155LysGlu: 1.155 ± 0.028
0.48LysPhe: 0.48 ± 0.018
1.979LysGly: 1.979 ± 0.042
0.439LysHis: 0.439 ± 0.015
0.874LysIle: 0.874 ± 0.021
0.96LysLys: 0.96 ± 0.038
2.109LysLeu: 2.109 ± 0.037
0.398LysMet: 0.398 ± 0.015
0.553LysAsn: 0.553 ± 0.022
1.406LysPro: 1.406 ± 0.037
0.719LysGln: 0.719 ± 0.025
1.513LysArg: 1.513 ± 0.029
1.207LysSer: 1.207 ± 0.032
1.316LysThr: 1.316 ± 0.035
2.029LysVal: 2.029 ± 0.041
0.261LysTrp: 0.261 ± 0.013
0.496LysTyr: 0.496 ± 0.02
0.0LysXaa: 0.0 ± 0.0
Leu
15.473LeuAla: 15.473 ± 0.125
0.834LeuCys: 0.834 ± 0.023
6.775LeuAsp: 6.775 ± 0.062
4.722LeuGlu: 4.722 ± 0.062
2.595LeuPhe: 2.595 ± 0.042
9.545LeuGly: 9.545 ± 0.069
2.249LeuHis: 2.249 ± 0.033
3.325LeuIle: 3.325 ± 0.046
2.175LeuLys: 2.175 ± 0.036
11.534LeuLeu: 11.534 ± 0.116
1.64LeuMet: 1.64 ± 0.033
1.705LeuAsn: 1.705 ± 0.033
6.558LeuPro: 6.558 ± 0.079
2.121LeuGln: 2.121 ± 0.032
8.737LeuArg: 8.737 ± 0.078
5.239LeuSer: 5.239 ± 0.067
7.253LeuThr: 7.253 ± 0.073
8.693LeuVal: 8.693 ± 0.084
1.308LeuTrp: 1.308 ± 0.028
1.899LeuTyr: 1.899 ± 0.033
0.0LeuXaa: 0.0 ± 0.0
Met
2.223MetAla: 2.223 ± 0.038
0.14MetCys: 0.14 ± 0.009
0.903MetAsp: 0.903 ± 0.025
0.748MetGlu: 0.748 ± 0.02
0.449MetPhe: 0.449 ± 0.015
1.312MetGly: 1.312 ± 0.034
0.34MetHis: 0.34 ± 0.014
0.639MetIle: 0.639 ± 0.021
0.403MetLys: 0.403 ± 0.015
1.698MetLeu: 1.698 ± 0.031
0.284MetMet: 0.284 ± 0.014
0.425MetAsn: 0.425 ± 0.014
1.118MetPro: 1.118 ± 0.025
0.411MetGln: 0.411 ± 0.015
1.417MetArg: 1.417 ± 0.027
1.341MetSer: 1.341 ± 0.029
1.551MetThr: 1.551 ± 0.029
1.257MetVal: 1.257 ± 0.027
0.207MetTrp: 0.207 ± 0.012
0.323MetTyr: 0.323 ± 0.011
0.0MetXaa: 0.0 ± 0.0
Asn
2.16AsnAla: 2.16 ± 0.038
0.178AsnCys: 0.178 ± 0.01
0.911AsnAsp: 0.911 ± 0.021
0.783AsnGlu: 0.783 ± 0.022
0.503AsnPhe: 0.503 ± 0.018
1.862AsnGly: 1.862 ± 0.048
0.395AsnHis: 0.395 ± 0.016
0.652AsnIle: 0.652 ± 0.023
0.43AsnLys: 0.43 ± 0.019
1.614AsnLeu: 1.614 ± 0.029
0.316AsnMet: 0.316 ± 0.014
0.412AsnAsn: 0.412 ± 0.018
1.336AsnPro: 1.336 ± 0.03
0.529AsnGln: 0.529 ± 0.018
1.243AsnArg: 1.243 ± 0.027
0.956AsnSer: 0.956 ± 0.026
1.137AsnThr: 1.137 ± 0.032
1.378AsnVal: 1.378 ± 0.027
0.303AsnTrp: 0.303 ± 0.013
0.394AsnTyr: 0.394 ± 0.015
0.0AsnXaa: 0.0 ± 0.0
Pro
9.1ProAla: 9.1 ± 0.124
0.325ProCys: 0.325 ± 0.015
4.537ProAsp: 4.537 ± 0.055
4.757ProGlu: 4.757 ± 0.061
1.517ProPhe: 1.517 ± 0.032
6.657ProGly: 6.657 ± 0.071
1.413ProHis: 1.413 ± 0.029
1.132ProIle: 1.132 ± 0.026
1.219ProLys: 1.219 ± 0.034
5.502ProLeu: 5.502 ± 0.069
0.984ProMet: 0.984 ± 0.022
0.869ProAsn: 0.869 ± 0.023
3.644ProPro: 3.644 ± 0.067
1.694ProGln: 1.694 ± 0.036
4.01ProArg: 4.01 ± 0.06
3.099ProSer: 3.099 ± 0.049
3.127ProThr: 3.127 ± 0.043
5.747ProVal: 5.747 ± 0.058
0.861ProTrp: 0.861 ± 0.023
1.474ProTyr: 1.474 ± 0.033
0.0ProXaa: 0.0 ± 0.0
Gln
3.553GlnAla: 3.553 ± 0.054
0.156GlnCys: 0.156 ± 0.009
1.409GlnAsp: 1.409 ± 0.029
1.366GlnGlu: 1.366 ± 0.03
0.662GlnPhe: 0.662 ± 0.018
2.415GlnGly: 2.415 ± 0.04
0.63GlnHis: 0.63 ± 0.019
1.047GlnIle: 1.047 ± 0.026
0.626GlnLys: 0.626 ± 0.019
2.92GlnLeu: 2.92 ± 0.042
0.473GlnMet: 0.473 ± 0.018
0.508GlnAsn: 0.508 ± 0.021
1.673GlnPro: 1.673 ± 0.034
1.194GlnGln: 1.194 ± 0.041
2.29GlnArg: 2.29 ± 0.039
1.288GlnSer: 1.288 ± 0.027
1.315GlnThr: 1.315 ± 0.031
2.414GlnVal: 2.414 ± 0.037
0.407GlnTrp: 0.407 ± 0.014
0.637GlnTyr: 0.637 ± 0.02
0.0GlnXaa: 0.0 ± 0.0
Arg
10.17ArgAla: 10.17 ± 0.104
0.564ArgCys: 0.564 ± 0.02
4.361ArgAsp: 4.361 ± 0.055
4.843ArgGlu: 4.843 ± 0.061
2.316ArgPhe: 2.316 ± 0.035
5.866ArgGly: 5.866 ± 0.059
2.134ArgHis: 2.134 ± 0.029
2.916ArgIle: 2.916 ± 0.048
1.665ArgLys: 1.665 ± 0.037
8.973ArgLeu: 8.973 ± 0.099
1.747ArgMet: 1.747 ± 0.03
1.32ArgAsn: 1.32 ± 0.026
5.093ArgPro: 5.093 ± 0.075
2.238ArgGln: 2.238 ± 0.034
7.689ArgArg: 7.689 ± 0.088
3.922ArgSer: 3.922 ± 0.047
5.479ArgThr: 5.479 ± 0.067
6.152ArgVal: 6.152 ± 0.063
1.361ArgTrp: 1.361 ± 0.032
1.846ArgTyr: 1.846 ± 0.032
0.0ArgXaa: 0.0 ± 0.0
Ser
6.911SerAla: 6.911 ± 0.072
0.392SerCys: 0.392 ± 0.016
2.599SerAsp: 2.599 ± 0.041
2.274SerGlu: 2.274 ± 0.035
1.496SerPhe: 1.496 ± 0.031
6.006SerGly: 6.006 ± 0.069
1.01SerHis: 1.01 ± 0.026
1.319SerIle: 1.319 ± 0.027
1.029SerLys: 1.029 ± 0.027
4.876SerLeu: 4.876 ± 0.056
1.033SerMet: 1.033 ± 0.026
0.795SerAsn: 0.795 ± 0.023
3.049SerPro: 3.049 ± 0.046
1.186SerGln: 1.186 ± 0.028
3.636SerArg: 3.636 ± 0.047
2.757SerSer: 2.757 ± 0.054
2.991SerThr: 2.991 ± 0.045
4.307SerVal: 4.307 ± 0.058
0.846SerTrp: 0.846 ± 0.02
1.262SerTyr: 1.262 ± 0.031
0.0SerXaa: 0.0 ± 0.0
Thr
8.927ThrAla: 8.927 ± 0.078
0.434ThrCys: 0.434 ± 0.015
3.702ThrAsp: 3.702 ± 0.06
3.462ThrGlu: 3.462 ± 0.045
1.612ThrPhe: 1.612 ± 0.031
7.019ThrGly: 7.019 ± 0.073
1.238ThrHis: 1.238 ± 0.029
1.585ThrIle: 1.585 ± 0.036
1.221ThrLys: 1.221 ± 0.031
5.967ThrLeu: 5.967 ± 0.06
0.89ThrMet: 0.89 ± 0.024
0.968ThrAsn: 0.968 ± 0.029
4.377ThrPro: 4.377 ± 0.057
1.332ThrGln: 1.332 ± 0.028
4.024ThrArg: 4.024 ± 0.049
3.135ThrSer: 3.135 ± 0.052
3.811ThrThr: 3.811 ± 0.077
6.107ThrVal: 6.107 ± 0.064
0.9ThrTrp: 0.9 ± 0.026
1.37ThrTyr: 1.37 ± 0.041
0.0ThrXaa: 0.0 ± 0.0
Val
10.581ValAla: 10.581 ± 0.071
0.772ValCys: 0.772 ± 0.021
4.983ValAsp: 4.983 ± 0.057
4.486ValGlu: 4.486 ± 0.055
2.459ValPhe: 2.459 ± 0.038
6.415ValGly: 6.415 ± 0.076
2.033ValHis: 2.033 ± 0.035
2.858ValIle: 2.858 ± 0.042
1.839ValLys: 1.839 ± 0.037
9.704ValLeu: 9.704 ± 0.103
1.455ValMet: 1.455 ± 0.028
1.654ValAsn: 1.654 ± 0.032
5.437ValPro: 5.437 ± 0.067
2.091ValGln: 2.091 ± 0.032
7.349ValArg: 7.349 ± 0.068
4.392ValSer: 4.392 ± 0.055
5.849ValThr: 5.849 ± 0.062
7.898ValVal: 7.898 ± 0.076
1.162ValTrp: 1.162 ± 0.025
1.609ValTyr: 1.609 ± 0.033
0.0ValXaa: 0.0 ± 0.0
Trp
1.674TrpAla: 1.674 ± 0.035
0.144TrpCys: 0.144 ± 0.008
0.833TrpAsp: 0.833 ± 0.019
0.698TrpGlu: 0.698 ± 0.019
0.537TrpPhe: 0.537 ± 0.019
1.041TrpGly: 1.041 ± 0.023
0.373TrpHis: 0.373 ± 0.014
0.493TrpIle: 0.493 ± 0.016
0.362TrpLys: 0.362 ± 0.015
1.779TrpLeu: 1.779 ± 0.033
0.272TrpMet: 0.272 ± 0.014
0.367TrpAsn: 0.367 ± 0.015
0.767TrpPro: 0.767 ± 0.021
0.591TrpGln: 0.591 ± 0.019
1.306TrpArg: 1.306 ± 0.03
0.931TrpSer: 0.931 ± 0.023
1.049TrpThr: 1.049 ± 0.025
0.988TrpVal: 0.988 ± 0.023
0.328TrpTrp: 0.328 ± 0.014
0.362TrpTyr: 0.362 ± 0.016
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.849TyrAla: 2.849 ± 0.045
0.168TyrCys: 0.168 ± 0.008
1.661TyrAsp: 1.661 ± 0.046
1.226TyrGlu: 1.226 ± 0.028
0.654TyrPhe: 0.654 ± 0.021
2.346TyrGly: 2.346 ± 0.041
0.368TyrHis: 0.368 ± 0.015
0.511TyrIle: 0.511 ± 0.02
0.414TyrLys: 0.414 ± 0.019
2.135TyrLeu: 2.135 ± 0.036
0.259TyrMet: 0.259 ± 0.013
0.414TyrAsn: 0.414 ± 0.016
1.048TyrPro: 1.048 ± 0.027
0.639TyrGln: 0.639 ± 0.018
1.83TyrArg: 1.83 ± 0.032
0.993TyrSer: 0.993 ± 0.028
1.252TyrThr: 1.252 ± 0.036
1.659TyrVal: 1.659 ± 0.029
0.358TyrTrp: 0.358 ± 0.014
0.461TyrTyr: 0.461 ± 0.017
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 5663 proteins (1872533 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