Amino acid dipepetide frequency for Streptomyces showdoensis

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
23.045AlaAla: 23.045 ± 0.15
1.03AlaCys: 1.03 ± 0.024
8.407AlaAsp: 8.407 ± 0.064
9.473AlaGlu: 9.473 ± 0.094
3.688AlaPhe: 3.688 ± 0.044
13.961AlaGly: 13.961 ± 0.095
2.896AlaHis: 2.896 ± 0.036
3.304AlaIle: 3.304 ± 0.045
2.969AlaLys: 2.969 ± 0.05
15.22AlaLeu: 15.22 ± 0.119
2.508AlaMet: 2.508 ± 0.035
1.936AlaAsn: 1.936 ± 0.034
7.799AlaPro: 7.799 ± 0.079
3.56AlaGln: 3.56 ± 0.047
10.695AlaArg: 10.695 ± 0.09
5.786AlaSer: 5.786 ± 0.061
7.155AlaThr: 7.155 ± 0.069
12.663AlaVal: 12.663 ± 0.089
1.913AlaTrp: 1.913 ± 0.027
2.994AlaTyr: 2.994 ± 0.035
0.0AlaXaa: 0.0 ± 0.0
Cys
1.132CysAla: 1.132 ± 0.025
0.091CysCys: 0.091 ± 0.007
0.433CysAsp: 0.433 ± 0.014
0.38CysGlu: 0.38 ± 0.015
0.218CysPhe: 0.218 ± 0.011
0.948CysGly: 0.948 ± 0.02
0.193CysHis: 0.193 ± 0.01
0.153CysIle: 0.153 ± 0.008
0.114CysLys: 0.114 ± 0.006
0.714CysLeu: 0.714 ± 0.021
0.123CysMet: 0.123 ± 0.008
0.132CysAsn: 0.132 ± 0.009
0.459CysPro: 0.459 ± 0.016
0.156CysGln: 0.156 ± 0.008
0.589CysArg: 0.589 ± 0.019
0.411CysSer: 0.411 ± 0.016
0.473CysThr: 0.473 ± 0.017
0.634CysVal: 0.634 ± 0.016
0.118CysTrp: 0.118 ± 0.007
0.141CysTyr: 0.141 ± 0.009
0.0CysXaa: 0.0 ± 0.0
Asp
7.77AspAla: 7.77 ± 0.069
0.42AspCys: 0.42 ± 0.013
3.191AspAsp: 3.191 ± 0.047
3.865AspGlu: 3.865 ± 0.047
1.608AspPhe: 1.608 ± 0.027
6.448AspGly: 6.448 ± 0.06
1.366AspHis: 1.366 ± 0.026
1.646AspIle: 1.646 ± 0.027
1.141AspLys: 1.141 ± 0.028
5.931AspLeu: 5.931 ± 0.057
0.762AspMet: 0.762 ± 0.018
0.897AspAsn: 0.897 ± 0.021
4.81AspPro: 4.81 ± 0.056
1.35AspGln: 1.35 ± 0.028
5.047AspArg: 5.047 ± 0.053
2.325AspSer: 2.325 ± 0.031
3.111AspThr: 3.111 ± 0.04
4.447AspVal: 4.447 ± 0.044
1.043AspTrp: 1.043 ± 0.025
1.051AspTyr: 1.051 ± 0.023
0.0AspXaa: 0.0 ± 0.0
Glu
7.79GluAla: 7.79 ± 0.076
0.355GluCys: 0.355 ± 0.014
2.832GluAsp: 2.832 ± 0.036
3.775GluGlu: 3.775 ± 0.051
1.492GluPhe: 1.492 ± 0.023
4.68GluGly: 4.68 ± 0.053
1.465GluHis: 1.465 ± 0.026
2.177GluIle: 2.177 ± 0.034
1.402GluLys: 1.402 ± 0.027
7.156GluLeu: 7.156 ± 0.076
0.847GluMet: 0.847 ± 0.018
1.012GluAsn: 1.012 ± 0.02
3.388GluPro: 3.388 ± 0.048
2.06GluGln: 2.06 ± 0.034
5.768GluArg: 5.768 ± 0.063
2.457GluSer: 2.457 ± 0.034
2.98GluThr: 2.98 ± 0.037
4.45GluVal: 4.45 ± 0.053
0.772GluTrp: 0.772 ± 0.022
1.09GluTyr: 1.09 ± 0.024
0.0GluXaa: 0.0 ± 0.0
Phe
3.816PheAla: 3.816 ± 0.04
0.258PheCys: 0.258 ± 0.011
1.918PheAsp: 1.918 ± 0.035
1.441PheGlu: 1.441 ± 0.027
0.861PhePhe: 0.861 ± 0.024
3.097PheGly: 3.097 ± 0.043
0.609PheHis: 0.609 ± 0.015
0.635PheIle: 0.635 ± 0.018
0.539PheLys: 0.539 ± 0.015
2.696PheLeu: 2.696 ± 0.043
0.388PheMet: 0.388 ± 0.012
0.559PheAsn: 0.559 ± 0.016
1.372PhePro: 1.372 ± 0.027
0.662PheGln: 0.662 ± 0.015
1.89PheArg: 1.89 ± 0.031
1.4PheSer: 1.4 ± 0.029
2.002PheThr: 2.002 ± 0.03
2.223PheVal: 2.223 ± 0.037
0.436PheTrp: 0.436 ± 0.015
0.576PheTyr: 0.576 ± 0.019
0.0PheXaa: 0.0 ± 0.0
Gly
12.006GlyAla: 12.006 ± 0.079
0.842GlyCys: 0.842 ± 0.022
5.132GlyAsp: 5.132 ± 0.048
5.253GlyGlu: 5.253 ± 0.059
2.991GlyPhe: 2.991 ± 0.038
9.408GlyGly: 9.408 ± 0.091
2.275GlyHis: 2.275 ± 0.038
3.424GlyIle: 3.424 ± 0.037
2.345GlyLys: 2.345 ± 0.045
9.955GlyLeu: 9.955 ± 0.069
1.912GlyMet: 1.912 ± 0.029
1.727GlyAsn: 1.727 ± 0.032
5.594GlyPro: 5.594 ± 0.059
2.54GlyGln: 2.54 ± 0.045
8.065GlyArg: 8.065 ± 0.069
5.35GlySer: 5.35 ± 0.056
6.691GlyThr: 6.691 ± 0.061
7.656GlyVal: 7.656 ± 0.057
1.824GlyTrp: 1.824 ± 0.032
2.341GlyTyr: 2.341 ± 0.038
0.0GlyXaa: 0.0 ± 0.0
His
2.69HisAla: 2.69 ± 0.039
0.208HisCys: 0.208 ± 0.012
1.231HisAsp: 1.231 ± 0.022
1.22HisGlu: 1.22 ± 0.022
0.612HisPhe: 0.612 ± 0.016
2.453HisGly: 2.453 ± 0.036
0.648HisHis: 0.648 ± 0.018
0.586HisIle: 0.586 ± 0.015
0.347HisLys: 0.347 ± 0.011
2.312HisLeu: 2.312 ± 0.039
0.322HisMet: 0.322 ± 0.012
0.347HisAsn: 0.347 ± 0.012
1.785HisPro: 1.785 ± 0.029
0.587HisGln: 0.587 ± 0.016
1.972HisArg: 1.972 ± 0.031
0.908HisSer: 0.908 ± 0.02
1.251HisThr: 1.251 ± 0.028
1.663HisVal: 1.663 ± 0.029
0.36HisTrp: 0.36 ± 0.012
0.476HisTyr: 0.476 ± 0.014
0.0HisXaa: 0.0 ± 0.0
Ile
4.587IleAla: 4.587 ± 0.046
0.278IleCys: 0.278 ± 0.011
2.073IleAsp: 2.073 ± 0.032
1.873IleGlu: 1.873 ± 0.038
0.632IlePhe: 0.632 ± 0.018
3.518IleGly: 3.518 ± 0.045
0.564IleHis: 0.564 ± 0.017
0.779IleIle: 0.779 ± 0.024
0.683IleLys: 0.683 ± 0.019
2.3IleLeu: 2.3 ± 0.034
0.421IleMet: 0.421 ± 0.014
0.632IleAsn: 0.632 ± 0.018
1.679IlePro: 1.679 ± 0.03
0.692IleGln: 0.692 ± 0.019
2.17IleArg: 2.17 ± 0.032
1.452IleSer: 1.452 ± 0.029
2.081IleThr: 2.081 ± 0.037
2.625IleVal: 2.625 ± 0.04
0.368IleTrp: 0.368 ± 0.014
0.501IleTyr: 0.501 ± 0.016
0.0IleXaa: 0.0 ± 0.0
Lys
3.105LysAla: 3.105 ± 0.051
0.106LysCys: 0.106 ± 0.007
1.348LysAsp: 1.348 ± 0.031
1.216LysGlu: 1.216 ± 0.029
0.439LysPhe: 0.439 ± 0.014
1.883LysGly: 1.883 ± 0.034
0.409LysHis: 0.409 ± 0.013
0.85LysIle: 0.85 ± 0.022
0.846LysLys: 0.846 ± 0.031
1.99LysLeu: 1.99 ± 0.034
0.364LysMet: 0.364 ± 0.012
0.54LysAsn: 0.54 ± 0.019
1.399LysPro: 1.399 ± 0.029
0.656LysGln: 0.656 ± 0.017
1.419LysArg: 1.419 ± 0.025
1.057LysSer: 1.057 ± 0.029
1.271LysThr: 1.271 ± 0.03
1.864LysVal: 1.864 ± 0.031
0.252LysTrp: 0.252 ± 0.011
0.435LysTyr: 0.435 ± 0.015
0.0LysXaa: 0.0 ± 0.0
Leu
15.954LeuAla: 15.954 ± 0.099
0.826LeuCys: 0.826 ± 0.021
6.852LeuAsp: 6.852 ± 0.061
4.541LeuGlu: 4.541 ± 0.05
2.636LeuPhe: 2.636 ± 0.041
9.74LeuGly: 9.74 ± 0.069
2.245LeuHis: 2.245 ± 0.036
3.065LeuIle: 3.065 ± 0.041
2.077LeuLys: 2.077 ± 0.034
11.666LeuLeu: 11.666 ± 0.113
1.624LeuMet: 1.624 ± 0.027
1.611LeuAsn: 1.611 ± 0.03
6.665LeuPro: 6.665 ± 0.067
2.097LeuGln: 2.097 ± 0.034
8.706LeuArg: 8.706 ± 0.071
5.091LeuSer: 5.091 ± 0.052
6.821LeuThr: 6.821 ± 0.055
9.183LeuVal: 9.183 ± 0.073
1.326LeuTrp: 1.326 ± 0.025
1.898LeuTyr: 1.898 ± 0.029
0.0LeuXaa: 0.0 ± 0.0
Met
2.221MetAla: 2.221 ± 0.032
0.128MetCys: 0.128 ± 0.007
0.865MetAsp: 0.865 ± 0.021
0.745MetGlu: 0.745 ± 0.019
0.438MetPhe: 0.438 ± 0.015
1.29MetGly: 1.29 ± 0.025
0.326MetHis: 0.326 ± 0.012
0.634MetIle: 0.634 ± 0.017
0.456MetLys: 0.456 ± 0.016
1.623MetLeu: 1.623 ± 0.031
0.279MetMet: 0.279 ± 0.013
0.432MetAsn: 0.432 ± 0.012
1.056MetPro: 1.056 ± 0.022
0.434MetGln: 0.434 ± 0.016
1.36MetArg: 1.36 ± 0.029
1.232MetSer: 1.232 ± 0.022
1.546MetThr: 1.546 ± 0.024
1.211MetVal: 1.211 ± 0.023
0.201MetTrp: 0.201 ± 0.01
0.315MetTyr: 0.315 ± 0.012
0.0MetXaa: 0.0 ± 0.0
Asn
2.169AsnAla: 2.169 ± 0.035
0.158AsnCys: 0.158 ± 0.01
0.921AsnAsp: 0.921 ± 0.022
0.791AsnGlu: 0.791 ± 0.019
0.46AsnPhe: 0.46 ± 0.017
1.884AsnGly: 1.884 ± 0.036
0.375AsnHis: 0.375 ± 0.013
0.6AsnIle: 0.6 ± 0.017
0.409AsnLys: 0.409 ± 0.015
1.625AsnLeu: 1.625 ± 0.029
0.285AsnMet: 0.285 ± 0.011
0.398AsnAsn: 0.398 ± 0.013
1.342AsnPro: 1.342 ± 0.027
0.474AsnGln: 0.474 ± 0.015
1.224AsnArg: 1.224 ± 0.024
0.852AsnSer: 0.852 ± 0.021
1.097AsnThr: 1.097 ± 0.022
1.297AsnVal: 1.297 ± 0.027
0.297AsnTrp: 0.297 ± 0.012
0.377AsnTyr: 0.377 ± 0.015
0.0AsnXaa: 0.0 ± 0.0
Pro
9.468ProAla: 9.468 ± 0.089
0.325ProCys: 0.325 ± 0.012
4.332ProAsp: 4.332 ± 0.044
4.695ProGlu: 4.695 ± 0.055
1.556ProPhe: 1.556 ± 0.026
6.956ProGly: 6.956 ± 0.064
1.309ProHis: 1.309 ± 0.025
1.146ProIle: 1.146 ± 0.026
1.207ProLys: 1.207 ± 0.03
5.531ProLeu: 5.531 ± 0.055
0.986ProMet: 0.986 ± 0.022
0.873ProAsn: 0.873 ± 0.022
3.597ProPro: 3.597 ± 0.065
1.692ProGln: 1.692 ± 0.046
4.037ProArg: 4.037 ± 0.048
3.053ProSer: 3.053 ± 0.041
3.23ProThr: 3.23 ± 0.048
5.784ProVal: 5.784 ± 0.061
0.915ProTrp: 0.915 ± 0.02
1.5ProTyr: 1.5 ± 0.031
0.0ProXaa: 0.0 ± 0.0
Gln
3.529GlnAla: 3.529 ± 0.045
0.161GlnCys: 0.161 ± 0.009
1.343GlnAsp: 1.343 ± 0.026
1.361GlnGlu: 1.361 ± 0.025
0.627GlnPhe: 0.627 ± 0.018
2.25GlnGly: 2.25 ± 0.035
0.553GlnHis: 0.553 ± 0.016
1.033GlnIle: 1.033 ± 0.025
0.611GlnLys: 0.611 ± 0.019
2.787GlnLeu: 2.787 ± 0.038
0.434GlnMet: 0.434 ± 0.013
0.495GlnAsn: 0.495 ± 0.015
1.591GlnPro: 1.591 ± 0.038
1.113GlnGln: 1.113 ± 0.037
2.146GlnArg: 2.146 ± 0.034
1.124GlnSer: 1.124 ± 0.02
1.278GlnThr: 1.278 ± 0.029
2.177GlnVal: 2.177 ± 0.033
0.434GlnTrp: 0.434 ± 0.014
0.595GlnTyr: 0.595 ± 0.02
0.0GlnXaa: 0.0 ± 0.0
Arg
10.415ArgAla: 10.415 ± 0.084
0.564ArgCys: 0.564 ± 0.017
4.099ArgAsp: 4.099 ± 0.048
4.803ArgGlu: 4.803 ± 0.05
2.362ArgPhe: 2.362 ± 0.035
6.007ArgGly: 6.007 ± 0.064
2.066ArgHis: 2.066 ± 0.035
3.31ArgIle: 3.31 ± 0.04
1.604ArgLys: 1.604 ± 0.032
8.913ArgLeu: 8.913 ± 0.077
1.705ArgMet: 1.705 ± 0.027
1.309ArgAsn: 1.309 ± 0.025
5.068ArgPro: 5.068 ± 0.06
2.09ArgGln: 2.09 ± 0.034
7.618ArgArg: 7.618 ± 0.076
3.898ArgSer: 3.898 ± 0.043
5.476ArgThr: 5.476 ± 0.052
5.875ArgVal: 5.875 ± 0.054
1.368ArgTrp: 1.368 ± 0.027
1.799ArgTyr: 1.799 ± 0.027
0.0ArgXaa: 0.0 ± 0.0
Ser
6.45SerAla: 6.45 ± 0.057
0.409SerCys: 0.409 ± 0.014
2.432SerAsp: 2.432 ± 0.03
2.274SerGlu: 2.274 ± 0.034
1.55SerPhe: 1.55 ± 0.029
5.747SerGly: 5.747 ± 0.06
0.915SerHis: 0.915 ± 0.021
1.351SerIle: 1.351 ± 0.024
0.97SerLys: 0.97 ± 0.024
4.765SerLeu: 4.765 ± 0.047
1.028SerMet: 1.028 ± 0.022
0.806SerAsn: 0.806 ± 0.02
3.0SerPro: 3.0 ± 0.035
1.076SerGln: 1.076 ± 0.022
3.358SerArg: 3.358 ± 0.042
2.655SerSer: 2.655 ± 0.047
2.92SerThr: 2.92 ± 0.04
4.13SerVal: 4.13 ± 0.043
0.925SerTrp: 0.925 ± 0.022
1.218SerTyr: 1.218 ± 0.021
0.0SerXaa: 0.0 ± 0.0
Thr
9.297ThrAla: 9.297 ± 0.073
0.383ThrCys: 0.383 ± 0.016
3.532ThrAsp: 3.532 ± 0.051
3.257ThrGlu: 3.257 ± 0.041
1.559ThrPhe: 1.559 ± 0.03
7.008ThrGly: 7.008 ± 0.069
1.153ThrHis: 1.153 ± 0.022
1.617ThrIle: 1.617 ± 0.031
1.141ThrLys: 1.141 ± 0.027
5.864ThrLeu: 5.864 ± 0.059
0.895ThrMet: 0.895 ± 0.021
0.91ThrAsn: 0.91 ± 0.022
4.263ThrPro: 4.263 ± 0.056
1.222ThrGln: 1.222 ± 0.023
3.822ThrArg: 3.822 ± 0.038
2.944ThrSer: 2.944 ± 0.043
3.867ThrThr: 3.867 ± 0.064
6.336ThrVal: 6.336 ± 0.059
0.895ThrTrp: 0.895 ± 0.021
1.353ThrTyr: 1.353 ± 0.031
0.0ThrXaa: 0.0 ± 0.0
Val
10.828ValAla: 10.828 ± 0.085
0.747ValCys: 0.747 ± 0.016
5.019ValAsp: 5.019 ± 0.054
4.828ValGlu: 4.828 ± 0.051
2.479ValPhe: 2.479 ± 0.039
6.518ValGly: 6.518 ± 0.057
1.916ValHis: 1.916 ± 0.032
2.573ValIle: 2.573 ± 0.039
1.793ValLys: 1.793 ± 0.033
9.758ValLeu: 9.758 ± 0.081
1.383ValMet: 1.383 ± 0.026
1.63ValAsn: 1.63 ± 0.035
5.481ValPro: 5.481 ± 0.052
2.014ValGln: 2.014 ± 0.031
7.308ValArg: 7.308 ± 0.065
4.14ValSer: 4.14 ± 0.044
5.727ValThr: 5.727 ± 0.061
7.972ValVal: 7.972 ± 0.074
1.137ValTrp: 1.137 ± 0.023
1.621ValTyr: 1.621 ± 0.033
0.0ValXaa: 0.0 ± 0.0
Trp
1.765TrpAla: 1.765 ± 0.032
0.152TrpCys: 0.152 ± 0.008
0.81TrpAsp: 0.81 ± 0.017
0.752TrpGlu: 0.752 ± 0.019
0.529TrpPhe: 0.529 ± 0.017
1.08TrpGly: 1.08 ± 0.021
0.336TrpHis: 0.336 ± 0.013
0.582TrpIle: 0.582 ± 0.015
0.377TrpLys: 0.377 ± 0.013
1.752TrpLeu: 1.752 ± 0.03
0.276TrpMet: 0.276 ± 0.011
0.406TrpAsn: 0.406 ± 0.015
0.79TrpPro: 0.79 ± 0.019
0.578TrpGln: 0.578 ± 0.017
1.317TrpArg: 1.317 ± 0.024
0.934TrpSer: 0.934 ± 0.021
1.126TrpThr: 1.126 ± 0.025
1.004TrpVal: 1.004 ± 0.022
0.344TrpTrp: 0.344 ± 0.014
0.363TrpTyr: 0.363 ± 0.017
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.966TyrAla: 2.966 ± 0.038
0.174TyrCys: 0.174 ± 0.009
1.458TyrAsp: 1.458 ± 0.035
1.409TyrGlu: 1.409 ± 0.025
0.643TyrPhe: 0.643 ± 0.017
2.457TyrGly: 2.457 ± 0.042
0.361TyrHis: 0.361 ± 0.012
0.441TyrIle: 0.441 ± 0.014
0.416TyrLys: 0.416 ± 0.016
2.064TyrLeu: 2.064 ± 0.032
0.245TyrMet: 0.245 ± 0.012
0.38TyrAsn: 0.38 ± 0.015
1.055TyrPro: 1.055 ± 0.024
0.586TyrGln: 0.586 ± 0.018
1.837TyrArg: 1.837 ± 0.035
0.913TyrSer: 0.913 ± 0.022
1.219TyrThr: 1.219 ± 0.026
1.679TyrVal: 1.679 ± 0.027
0.344TyrTrp: 0.344 ± 0.013
0.445TyrTyr: 0.445 ± 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 6933 proteins (2226963 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