Amino acid dipepetide frequency for Streptomyces sp. NTH33

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
20.666AlaAla: 20.666 ± 0.154
1.131AlaCys: 1.131 ± 0.025
8.071AlaAsp: 8.071 ± 0.072
8.892AlaGlu: 8.892 ± 0.099
3.386AlaPhe: 3.386 ± 0.042
12.915AlaGly: 12.915 ± 0.099
3.039AlaHis: 3.039 ± 0.042
3.29AlaIle: 3.29 ± 0.039
2.823AlaLys: 2.823 ± 0.054
14.323AlaLeu: 14.323 ± 0.104
2.444AlaMet: 2.444 ± 0.035
1.869AlaAsn: 1.869 ± 0.031
6.817AlaPro: 6.817 ± 0.077
3.757AlaGln: 3.757 ± 0.046
10.813AlaArg: 10.813 ± 0.106
5.719AlaSer: 5.719 ± 0.054
6.706AlaThr: 6.706 ± 0.058
12.338AlaVal: 12.338 ± 0.1
1.834AlaTrp: 1.834 ± 0.03
2.758AlaTyr: 2.758 ± 0.04
0.0AlaXaa: 0.0 ± 0.0
Cys
1.129CysAla: 1.129 ± 0.023
0.105CysCys: 0.105 ± 0.008
0.512CysAsp: 0.512 ± 0.017
0.42CysGlu: 0.42 ± 0.016
0.231CysPhe: 0.231 ± 0.009
0.99CysGly: 0.99 ± 0.022
0.212CysHis: 0.212 ± 0.01
0.179CysIle: 0.179 ± 0.009
0.117CysLys: 0.117 ± 0.008
0.785CysLeu: 0.785 ± 0.018
0.123CysMet: 0.123 ± 0.007
0.123CysAsn: 0.123 ± 0.007
0.539CysPro: 0.539 ± 0.017
0.187CysGln: 0.187 ± 0.007
0.714CysArg: 0.714 ± 0.019
0.426CysSer: 0.426 ± 0.014
0.536CysThr: 0.536 ± 0.019
0.703CysVal: 0.703 ± 0.019
0.153CysTrp: 0.153 ± 0.009
0.161CysTyr: 0.161 ± 0.008
0.0CysXaa: 0.0 ± 0.0
Asp
7.505AspAla: 7.505 ± 0.075
0.433AspCys: 0.433 ± 0.014
3.546AspAsp: 3.546 ± 0.05
3.885AspGlu: 3.885 ± 0.047
1.629AspPhe: 1.629 ± 0.033
6.161AspGly: 6.161 ± 0.054
1.501AspHis: 1.501 ± 0.027
1.865AspIle: 1.865 ± 0.037
1.208AspLys: 1.208 ± 0.029
6.199AspLeu: 6.199 ± 0.052
0.803AspMet: 0.803 ± 0.022
0.977AspAsn: 0.977 ± 0.024
4.347AspPro: 4.347 ± 0.047
1.549AspGln: 1.549 ± 0.025
5.143AspArg: 5.143 ± 0.061
2.469AspSer: 2.469 ± 0.034
3.222AspThr: 3.222 ± 0.043
4.725AspVal: 4.725 ± 0.047
1.004AspTrp: 1.004 ± 0.024
1.098AspTyr: 1.098 ± 0.025
0.0AspXaa: 0.0 ± 0.0
Glu
7.458GluAla: 7.458 ± 0.082
0.391GluCys: 0.391 ± 0.014
2.954GluAsp: 2.954 ± 0.041
3.894GluGlu: 3.894 ± 0.059
1.452GluPhe: 1.452 ± 0.027
4.363GluGly: 4.363 ± 0.047
1.63GluHis: 1.63 ± 0.033
2.242GluIle: 2.242 ± 0.036
1.527GluLys: 1.527 ± 0.034
6.832GluLeu: 6.832 ± 0.069
0.931GluMet: 0.931 ± 0.022
1.058GluAsn: 1.058 ± 0.022
3.436GluPro: 3.436 ± 0.049
2.375GluGln: 2.375 ± 0.038
5.793GluArg: 5.793 ± 0.06
2.476GluSer: 2.476 ± 0.037
2.921GluThr: 2.921 ± 0.039
4.59GluVal: 4.59 ± 0.046
0.807GluTrp: 0.807 ± 0.018
1.203GluTyr: 1.203 ± 0.023
0.0GluXaa: 0.0 ± 0.0
Phe
3.596PheAla: 3.596 ± 0.046
0.282PheCys: 0.282 ± 0.011
1.963PheAsp: 1.963 ± 0.036
1.442PheGlu: 1.442 ± 0.026
0.894PhePhe: 0.894 ± 0.021
2.927PheGly: 2.927 ± 0.038
0.66PheHis: 0.66 ± 0.016
0.667PheIle: 0.667 ± 0.019
0.526PheLys: 0.526 ± 0.016
2.591PheLeu: 2.591 ± 0.041
0.388PheMet: 0.388 ± 0.014
0.534PheAsn: 0.534 ± 0.015
1.409PhePro: 1.409 ± 0.025
0.678PheGln: 0.678 ± 0.019
1.894PheArg: 1.894 ± 0.034
1.406PheSer: 1.406 ± 0.028
2.005PheThr: 2.005 ± 0.033
2.22PheVal: 2.22 ± 0.034
0.416PheTrp: 0.416 ± 0.014
0.566PheTyr: 0.566 ± 0.018
0.0PheXaa: 0.0 ± 0.0
Gly
10.637GlyAla: 10.637 ± 0.083
0.893GlyCys: 0.893 ± 0.023
5.035GlyAsp: 5.035 ± 0.052
5.162GlyGlu: 5.162 ± 0.047
2.882GlyPhe: 2.882 ± 0.041
8.676GlyGly: 8.676 ± 0.08
2.423GlyHis: 2.423 ± 0.035
3.407GlyIle: 3.407 ± 0.044
2.459GlyLys: 2.459 ± 0.047
9.313GlyLeu: 9.313 ± 0.074
2.003GlyMet: 2.003 ± 0.027
1.782GlyAsn: 1.782 ± 0.036
5.212GlyPro: 5.212 ± 0.059
2.66GlyGln: 2.66 ± 0.043
8.289GlyArg: 8.289 ± 0.072
5.196GlySer: 5.196 ± 0.054
6.294GlyThr: 6.294 ± 0.06
7.493GlyVal: 7.493 ± 0.057
1.642GlyTrp: 1.642 ± 0.03
2.222GlyTyr: 2.222 ± 0.034
0.0GlyXaa: 0.0 ± 0.0
His
2.8HisAla: 2.8 ± 0.043
0.242HisCys: 0.242 ± 0.01
1.392HisAsp: 1.392 ± 0.026
1.269HisGlu: 1.269 ± 0.026
0.668HisPhe: 0.668 ± 0.017
2.566HisGly: 2.566 ± 0.039
0.771HisHis: 0.771 ± 0.02
0.697HisIle: 0.697 ± 0.019
0.397HisLys: 0.397 ± 0.014
2.56HisLeu: 2.56 ± 0.035
0.338HisMet: 0.338 ± 0.011
0.375HisAsn: 0.375 ± 0.013
1.852HisPro: 1.852 ± 0.032
0.691HisGln: 0.691 ± 0.02
2.325HisArg: 2.325 ± 0.034
1.061HisSer: 1.061 ± 0.028
1.389HisThr: 1.389 ± 0.028
1.842HisVal: 1.842 ± 0.029
0.397HisTrp: 0.397 ± 0.015
0.511HisTyr: 0.511 ± 0.016
0.0HisXaa: 0.0 ± 0.0
Ile
4.624IleAla: 4.624 ± 0.045
0.284IleCys: 0.284 ± 0.012
2.174IleAsp: 2.174 ± 0.035
1.959IleGlu: 1.959 ± 0.032
0.681IlePhe: 0.681 ± 0.016
3.473IleGly: 3.473 ± 0.04
0.63IleHis: 0.63 ± 0.018
0.84IleIle: 0.84 ± 0.022
0.768IleLys: 0.768 ± 0.021
2.332IleLeu: 2.332 ± 0.041
0.438IleMet: 0.438 ± 0.014
0.672IleAsn: 0.672 ± 0.02
1.73IlePro: 1.73 ± 0.031
0.725IleGln: 0.725 ± 0.019
2.35IleArg: 2.35 ± 0.034
1.563IleSer: 1.563 ± 0.029
2.188IleThr: 2.188 ± 0.034
2.673IleVal: 2.673 ± 0.045
0.368IleTrp: 0.368 ± 0.012
0.507IleTyr: 0.507 ± 0.017
0.0IleXaa: 0.0 ± 0.0
Lys
3.0LysAla: 3.0 ± 0.047
0.118LysCys: 0.118 ± 0.007
1.403LysAsp: 1.403 ± 0.029
1.307LysGlu: 1.307 ± 0.028
0.475LysPhe: 0.475 ± 0.017
1.928LysGly: 1.928 ± 0.038
0.458LysHis: 0.458 ± 0.015
0.822LysIle: 0.822 ± 0.024
0.916LysLys: 0.916 ± 0.03
2.049LysLeu: 2.049 ± 0.037
0.369LysMet: 0.369 ± 0.015
0.559LysAsn: 0.559 ± 0.021
1.375LysPro: 1.375 ± 0.03
0.742LysGln: 0.742 ± 0.024
1.54LysArg: 1.54 ± 0.032
1.163LysSer: 1.163 ± 0.026
1.295LysThr: 1.295 ± 0.031
1.951LysVal: 1.951 ± 0.036
0.276LysTrp: 0.276 ± 0.011
0.487LysTyr: 0.487 ± 0.017
0.0LysXaa: 0.0 ± 0.0
Leu
14.866LeuAla: 14.866 ± 0.105
0.883LeuCys: 0.883 ± 0.02
6.607LeuAsp: 6.607 ± 0.054
4.91LeuGlu: 4.91 ± 0.055
2.571LeuPhe: 2.571 ± 0.038
9.06LeuGly: 9.06 ± 0.079
2.419LeuHis: 2.419 ± 0.034
3.184LeuIle: 3.184 ± 0.041
2.161LeuLys: 2.161 ± 0.038
11.215LeuLeu: 11.215 ± 0.103
1.655LeuMet: 1.655 ± 0.03
1.707LeuAsn: 1.707 ± 0.03
6.528LeuPro: 6.528 ± 0.065
2.33LeuGln: 2.33 ± 0.033
8.982LeuArg: 8.982 ± 0.08
5.232LeuSer: 5.232 ± 0.056
6.783LeuThr: 6.783 ± 0.067
8.871LeuVal: 8.871 ± 0.072
1.298LeuTrp: 1.298 ± 0.029
1.908LeuTyr: 1.908 ± 0.032
0.0LeuXaa: 0.0 ± 0.0
Met
2.292MetAla: 2.292 ± 0.028
0.143MetCys: 0.143 ± 0.009
0.898MetAsp: 0.898 ± 0.021
0.785MetGlu: 0.785 ± 0.017
0.435MetPhe: 0.435 ± 0.014
1.329MetGly: 1.329 ± 0.027
0.354MetHis: 0.354 ± 0.013
0.649MetIle: 0.649 ± 0.02
0.439MetLys: 0.439 ± 0.015
1.675MetLeu: 1.675 ± 0.034
0.28MetMet: 0.28 ± 0.011
0.434MetAsn: 0.434 ± 0.015
1.127MetPro: 1.127 ± 0.025
0.434MetGln: 0.434 ± 0.015
1.42MetArg: 1.42 ± 0.025
1.262MetSer: 1.262 ± 0.023
1.539MetThr: 1.539 ± 0.032
1.282MetVal: 1.282 ± 0.026
0.222MetTrp: 0.222 ± 0.012
0.328MetTyr: 0.328 ± 0.012
0.0MetXaa: 0.0 ± 0.0
Asn
2.153AsnAla: 2.153 ± 0.031
0.176AsnCys: 0.176 ± 0.009
0.943AsnAsp: 0.943 ± 0.022
0.829AsnGlu: 0.829 ± 0.021
0.467AsnPhe: 0.467 ± 0.015
1.837AsnGly: 1.837 ± 0.034
0.402AsnHis: 0.402 ± 0.014
0.657AsnIle: 0.657 ± 0.018
0.433AsnLys: 0.433 ± 0.016
1.631AsnLeu: 1.631 ± 0.031
0.295AsnMet: 0.295 ± 0.013
0.42AsnAsn: 0.42 ± 0.015
1.362AsnPro: 1.362 ± 0.025
0.518AsnGln: 0.518 ± 0.016
1.323AsnArg: 1.323 ± 0.026
0.889AsnSer: 0.889 ± 0.025
1.096AsnThr: 1.096 ± 0.029
1.409AsnVal: 1.409 ± 0.028
0.287AsnTrp: 0.287 ± 0.013
0.398AsnTyr: 0.398 ± 0.014
0.0AsnXaa: 0.0 ± 0.0
Pro
8.421ProAla: 8.421 ± 0.075
0.377ProCys: 0.377 ± 0.013
4.404ProAsp: 4.404 ± 0.052
4.417ProGlu: 4.417 ± 0.054
1.534ProPhe: 1.534 ± 0.025
6.625ProGly: 6.625 ± 0.062
1.437ProHis: 1.437 ± 0.027
1.195ProIle: 1.195 ± 0.024
1.236ProLys: 1.236 ± 0.028
5.379ProLeu: 5.379 ± 0.057
1.027ProMet: 1.027 ± 0.023
0.84ProAsn: 0.84 ± 0.021
3.534ProPro: 3.534 ± 0.051
1.715ProGln: 1.715 ± 0.032
4.253ProArg: 4.253 ± 0.044
3.153ProSer: 3.153 ± 0.044
2.943ProThr: 2.943 ± 0.04
5.588ProVal: 5.588 ± 0.057
0.872ProTrp: 0.872 ± 0.019
1.427ProTyr: 1.427 ± 0.028
0.0ProXaa: 0.0 ± 0.0
Gln
3.877GlnAla: 3.877 ± 0.045
0.184GlnCys: 0.184 ± 0.01
1.421GlnAsp: 1.421 ± 0.023
1.587GlnGlu: 1.587 ± 0.029
0.654GlnPhe: 0.654 ± 0.017
2.406GlnGly: 2.406 ± 0.035
0.702GlnHis: 0.702 ± 0.018
1.046GlnIle: 1.046 ± 0.024
0.669GlnLys: 0.669 ± 0.021
3.005GlnLeu: 3.005 ± 0.042
0.49GlnMet: 0.49 ± 0.017
0.492GlnAsn: 0.492 ± 0.016
1.607GlnPro: 1.607 ± 0.029
1.27GlnGln: 1.27 ± 0.03
2.488GlnArg: 2.488 ± 0.035
1.256GlnSer: 1.256 ± 0.028
1.332GlnThr: 1.332 ± 0.028
2.51GlnVal: 2.51 ± 0.033
0.473GlnTrp: 0.473 ± 0.017
0.619GlnTyr: 0.619 ± 0.017
0.0GlnXaa: 0.0 ± 0.0
Arg
10.298ArgAla: 10.298 ± 0.096
0.656ArgCys: 0.656 ± 0.017
4.46ArgAsp: 4.46 ± 0.053
5.066ArgGlu: 5.066 ± 0.055
2.406ArgPhe: 2.406 ± 0.031
6.161ArgGly: 6.161 ± 0.055
2.345ArgHis: 2.345 ± 0.035
3.388ArgIle: 3.388 ± 0.04
1.786ArgLys: 1.786 ± 0.033
9.413ArgLeu: 9.413 ± 0.085
1.813ArgMet: 1.813 ± 0.029
1.415ArgAsn: 1.415 ± 0.026
5.225ArgPro: 5.225 ± 0.061
2.54ArgGln: 2.54 ± 0.034
8.509ArgArg: 8.509 ± 0.086
4.104ArgSer: 4.104 ± 0.042
5.665ArgThr: 5.665 ± 0.057
6.13ArgVal: 6.13 ± 0.055
1.446ArgTrp: 1.446 ± 0.028
1.788ArgTyr: 1.788 ± 0.029
0.0ArgXaa: 0.0 ± 0.0
Ser
6.526SerAla: 6.526 ± 0.061
0.419SerCys: 0.419 ± 0.016
2.559SerAsp: 2.559 ± 0.035
2.403SerGlu: 2.403 ± 0.038
1.528SerPhe: 1.528 ± 0.027
5.815SerGly: 5.815 ± 0.059
1.019SerHis: 1.019 ± 0.021
1.319SerIle: 1.319 ± 0.027
0.997SerLys: 0.997 ± 0.025
4.786SerLeu: 4.786 ± 0.052
1.014SerMet: 1.014 ± 0.023
0.847SerAsn: 0.847 ± 0.021
3.094SerPro: 3.094 ± 0.045
1.222SerGln: 1.222 ± 0.027
3.758SerArg: 3.758 ± 0.045
2.773SerSer: 2.773 ± 0.043
2.909SerThr: 2.909 ± 0.042
4.143SerVal: 4.143 ± 0.046
0.869SerTrp: 0.869 ± 0.02
1.227SerTyr: 1.227 ± 0.025
0.0SerXaa: 0.0 ± 0.0
Thr
8.792ThrAla: 8.792 ± 0.082
0.471ThrCys: 0.471 ± 0.015
3.609ThrAsp: 3.609 ± 0.048
3.228ThrGlu: 3.228 ± 0.039
1.57ThrPhe: 1.57 ± 0.028
6.67ThrGly: 6.67 ± 0.065
1.246ThrHis: 1.246 ± 0.025
1.643ThrIle: 1.643 ± 0.03
1.143ThrLys: 1.143 ± 0.026
5.601ThrLeu: 5.601 ± 0.048
0.951ThrMet: 0.951 ± 0.022
0.972ThrAsn: 0.972 ± 0.023
3.967ThrPro: 3.967 ± 0.04
1.321ThrGln: 1.321 ± 0.027
4.155ThrArg: 4.155 ± 0.042
3.03ThrSer: 3.03 ± 0.037
3.659ThrThr: 3.659 ± 0.053
6.148ThrVal: 6.148 ± 0.06
0.917ThrTrp: 0.917 ± 0.024
1.314ThrTyr: 1.314 ± 0.026
0.0ThrXaa: 0.0 ± 0.0
Val
10.547ValAla: 10.547 ± 0.07
0.809ValCys: 0.809 ± 0.02
4.938ValAsp: 4.938 ± 0.052
4.875ValGlu: 4.875 ± 0.055
2.445ValPhe: 2.445 ± 0.037
6.429ValGly: 6.429 ± 0.064
2.114ValHis: 2.114 ± 0.033
2.861ValIle: 2.861 ± 0.04
1.824ValLys: 1.824 ± 0.035
9.655ValLeu: 9.655 ± 0.085
1.439ValMet: 1.439 ± 0.027
1.654ValAsn: 1.654 ± 0.028
5.399ValPro: 5.399 ± 0.06
2.103ValGln: 2.103 ± 0.033
7.633ValArg: 7.633 ± 0.06
4.184ValSer: 4.184 ± 0.052
5.677ValThr: 5.677 ± 0.058
8.224ValVal: 8.224 ± 0.076
1.159ValTrp: 1.159 ± 0.026
1.599ValTyr: 1.599 ± 0.026
0.0ValXaa: 0.0 ± 0.0
Trp
1.668TrpAla: 1.668 ± 0.029
0.159TrpCys: 0.159 ± 0.008
0.805TrpAsp: 0.805 ± 0.021
0.715TrpGlu: 0.715 ± 0.02
0.516TrpPhe: 0.516 ± 0.017
1.078TrpGly: 1.078 ± 0.02
0.374TrpHis: 0.374 ± 0.013
0.552TrpIle: 0.552 ± 0.017
0.383TrpLys: 0.383 ± 0.013
1.727TrpLeu: 1.727 ± 0.036
0.277TrpMet: 0.277 ± 0.011
0.413TrpAsn: 0.413 ± 0.014
0.738TrpPro: 0.738 ± 0.022
0.638TrpGln: 0.638 ± 0.018
1.392TrpArg: 1.392 ± 0.027
0.92TrpSer: 0.92 ± 0.026
1.049TrpThr: 1.049 ± 0.021
1.004TrpVal: 1.004 ± 0.019
0.358TrpTrp: 0.358 ± 0.014
0.373TrpTyr: 0.373 ± 0.014
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.735TyrAla: 2.735 ± 0.043
0.19TyrCys: 0.19 ± 0.009
1.574TyrAsp: 1.574 ± 0.031
1.289TyrGlu: 1.289 ± 0.024
0.64TyrPhe: 0.64 ± 0.018
2.271TyrGly: 2.271 ± 0.039
0.406TyrHis: 0.406 ± 0.013
0.476TyrIle: 0.476 ± 0.015
0.42TyrLys: 0.42 ± 0.014
2.099TyrLeu: 2.099 ± 0.027
0.249TyrMet: 0.249 ± 0.011
0.382TyrAsn: 0.382 ± 0.012
1.078TyrPro: 1.078 ± 0.023
0.633TyrGln: 0.633 ± 0.019
1.84TyrArg: 1.84 ± 0.031
0.944TyrSer: 0.944 ± 0.023
1.2TyrThr: 1.2 ± 0.024
1.726TyrVal: 1.726 ± 0.031
0.341TyrTrp: 0.341 ± 0.013
0.432TyrTyr: 0.432 ± 0.016
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 7049 proteins (2136631 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