Amino acid dipepetide frequency for Streptomyces sp. PsTaAH-137

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
21.471AlaAla: 21.471 ± 0.13
1.093AlaCys: 1.093 ± 0.024
8.648AlaAsp: 8.648 ± 0.071
8.43AlaGlu: 8.43 ± 0.071
3.583AlaPhe: 3.583 ± 0.046
12.768AlaGly: 12.768 ± 0.079
3.063AlaHis: 3.063 ± 0.042
3.372AlaIle: 3.372 ± 0.041
2.963AlaLys: 2.963 ± 0.048
14.797AlaLeu: 14.797 ± 0.122
2.496AlaMet: 2.496 ± 0.036
1.959AlaAsn: 1.959 ± 0.033
7.317AlaPro: 7.317 ± 0.071
3.923AlaGln: 3.923 ± 0.046
10.25AlaArg: 10.25 ± 0.083
6.094AlaSer: 6.094 ± 0.057
7.144AlaThr: 7.144 ± 0.061
12.337AlaVal: 12.337 ± 0.093
1.879AlaTrp: 1.879 ± 0.03
2.858AlaTyr: 2.858 ± 0.036
0.0AlaXaa: 0.0 ± 0.0
Cys
1.168CysAla: 1.168 ± 0.021
0.1CysCys: 0.1 ± 0.008
0.457CysAsp: 0.457 ± 0.012
0.368CysGlu: 0.368 ± 0.012
0.22CysPhe: 0.22 ± 0.01
0.94CysGly: 0.94 ± 0.023
0.2CysHis: 0.2 ± 0.009
0.171CysIle: 0.171 ± 0.007
0.11CysLys: 0.11 ± 0.008
0.751CysLeu: 0.751 ± 0.016
0.118CysMet: 0.118 ± 0.006
0.127CysAsn: 0.127 ± 0.007
0.455CysPro: 0.455 ± 0.014
0.154CysGln: 0.154 ± 0.007
0.557CysArg: 0.557 ± 0.017
0.433CysSer: 0.433 ± 0.015
0.519CysThr: 0.519 ± 0.016
0.673CysVal: 0.673 ± 0.02
0.13CysTrp: 0.13 ± 0.007
0.156CysTyr: 0.156 ± 0.008
0.0CysXaa: 0.0 ± 0.0
Asp
8.11AspAla: 8.11 ± 0.055
0.43AspCys: 0.43 ± 0.013
3.897AspAsp: 3.897 ± 0.046
3.864AspGlu: 3.864 ± 0.051
1.685AspPhe: 1.685 ± 0.028
6.589AspGly: 6.589 ± 0.061
1.466AspHis: 1.466 ± 0.025
1.963AspIle: 1.963 ± 0.026
1.381AspLys: 1.381 ± 0.034
6.313AspLeu: 6.313 ± 0.056
0.823AspMet: 0.823 ± 0.017
0.961AspAsn: 0.961 ± 0.018
4.443AspPro: 4.443 ± 0.043
1.537AspGln: 1.537 ± 0.027
4.867AspArg: 4.867 ± 0.051
2.686AspSer: 2.686 ± 0.035
3.455AspThr: 3.455 ± 0.046
4.843AspVal: 4.843 ± 0.048
1.051AspTrp: 1.051 ± 0.02
1.118AspTyr: 1.118 ± 0.022
0.0AspXaa: 0.0 ± 0.0
Glu
6.978GluAla: 6.978 ± 0.067
0.341GluCys: 0.341 ± 0.012
2.672GluAsp: 2.672 ± 0.034
3.208GluGlu: 3.208 ± 0.044
1.488GluPhe: 1.488 ± 0.027
4.115GluGly: 4.115 ± 0.04
1.478GluHis: 1.478 ± 0.025
2.161GluIle: 2.161 ± 0.03
1.526GluLys: 1.526 ± 0.027
6.657GluLeu: 6.657 ± 0.069
0.866GluMet: 0.866 ± 0.02
1.031GluAsn: 1.031 ± 0.02
3.23GluPro: 3.23 ± 0.048
2.14GluGln: 2.14 ± 0.032
5.376GluArg: 5.376 ± 0.055
2.521GluSer: 2.521 ± 0.033
2.883GluThr: 2.883 ± 0.04
4.105GluVal: 4.105 ± 0.044
0.722GluTrp: 0.722 ± 0.018
1.062GluTyr: 1.062 ± 0.021
0.0GluXaa: 0.0 ± 0.0
Phe
3.791PheAla: 3.791 ± 0.044
0.259PheCys: 0.259 ± 0.011
1.98PheAsp: 1.98 ± 0.031
1.374PheGlu: 1.374 ± 0.022
0.909PhePhe: 0.909 ± 0.021
3.166PheGly: 3.166 ± 0.037
0.612PheHis: 0.612 ± 0.016
0.732PheIle: 0.732 ± 0.019
0.587PheLys: 0.587 ± 0.015
2.596PheLeu: 2.596 ± 0.036
0.43PheMet: 0.43 ± 0.014
0.571PheAsn: 0.571 ± 0.018
1.362PhePro: 1.362 ± 0.023
0.7PheGln: 0.7 ± 0.019
1.812PheArg: 1.812 ± 0.029
1.484PheSer: 1.484 ± 0.025
2.113PheThr: 2.113 ± 0.029
2.328PheVal: 2.328 ± 0.033
0.444PheTrp: 0.444 ± 0.015
0.588PheTyr: 0.588 ± 0.016
0.0PheXaa: 0.0 ± 0.0
Gly
11.492GlyAla: 11.492 ± 0.082
0.845GlyCys: 0.845 ± 0.019
5.422GlyAsp: 5.422 ± 0.047
4.814GlyGlu: 4.814 ± 0.047
2.961GlyPhe: 2.961 ± 0.037
8.729GlyGly: 8.729 ± 0.083
2.309GlyHis: 2.309 ± 0.027
3.573GlyIle: 3.573 ± 0.037
2.54GlyLys: 2.54 ± 0.043
9.544GlyLeu: 9.544 ± 0.068
1.967GlyMet: 1.967 ± 0.031
1.763GlyAsn: 1.763 ± 0.031
4.995GlyPro: 4.995 ± 0.052
2.627GlyGln: 2.627 ± 0.037
7.359GlyArg: 7.359 ± 0.063
5.456GlySer: 5.456 ± 0.057
6.477GlyThr: 6.477 ± 0.06
7.607GlyVal: 7.607 ± 0.054
1.671GlyTrp: 1.671 ± 0.031
2.296GlyTyr: 2.296 ± 0.032
0.0GlyXaa: 0.0 ± 0.0
His
2.711HisAla: 2.711 ± 0.035
0.211HisCys: 0.211 ± 0.008
1.452HisAsp: 1.452 ± 0.024
1.204HisGlu: 1.204 ± 0.021
0.655HisPhe: 0.655 ± 0.016
2.474HisGly: 2.474 ± 0.036
0.683HisHis: 0.683 ± 0.019
0.693HisIle: 0.693 ± 0.017
0.378HisLys: 0.378 ± 0.013
2.451HisLeu: 2.451 ± 0.035
0.335HisMet: 0.335 ± 0.011
0.378HisAsn: 0.378 ± 0.013
1.755HisPro: 1.755 ± 0.03
0.654HisGln: 0.654 ± 0.016
2.014HisArg: 2.014 ± 0.034
1.0HisSer: 1.0 ± 0.021
1.397HisThr: 1.397 ± 0.026
1.755HisVal: 1.755 ± 0.03
0.395HisTrp: 0.395 ± 0.012
0.49HisTyr: 0.49 ± 0.015
0.0HisXaa: 0.0 ± 0.0
Ile
4.879IleAla: 4.879 ± 0.046
0.283IleCys: 0.283 ± 0.009
2.234IleAsp: 2.234 ± 0.029
1.901IleGlu: 1.901 ± 0.029
0.706IlePhe: 0.706 ± 0.018
3.769IleGly: 3.769 ± 0.045
0.581IleHis: 0.581 ± 0.015
0.851IleIle: 0.851 ± 0.021
0.77IleLys: 0.77 ± 0.02
2.423IleLeu: 2.423 ± 0.034
0.444IleMet: 0.444 ± 0.013
0.654IleAsn: 0.654 ± 0.018
1.76IlePro: 1.76 ± 0.028
0.706IleGln: 0.706 ± 0.018
2.071IleArg: 2.071 ± 0.027
1.678IleSer: 1.678 ± 0.028
2.21IleThr: 2.21 ± 0.03
2.837IleVal: 2.837 ± 0.039
0.372IleTrp: 0.372 ± 0.012
0.524IleTyr: 0.524 ± 0.016
0.0IleXaa: 0.0 ± 0.0
Lys
3.147LysAla: 3.147 ± 0.05
0.119LysCys: 0.119 ± 0.007
1.507LysAsp: 1.507 ± 0.032
1.274LysGlu: 1.274 ± 0.023
0.495LysPhe: 0.495 ± 0.015
1.966LysGly: 1.966 ± 0.034
0.462LysHis: 0.462 ± 0.013
0.928LysIle: 0.928 ± 0.022
1.064LysLys: 1.064 ± 0.03
2.129LysLeu: 2.129 ± 0.03
0.431LysMet: 0.431 ± 0.014
0.633LysAsn: 0.633 ± 0.02
1.388LysPro: 1.388 ± 0.029
0.765LysGln: 0.765 ± 0.017
1.456LysArg: 1.456 ± 0.026
1.268LysSer: 1.268 ± 0.029
1.377LysThr: 1.377 ± 0.029
2.012LysVal: 2.012 ± 0.031
0.293LysTrp: 0.293 ± 0.011
0.506LysTyr: 0.506 ± 0.016
0.0LysXaa: 0.0 ± 0.0
Leu
14.986LeuAla: 14.986 ± 0.102
0.875LeuCys: 0.875 ± 0.021
6.908LeuAsp: 6.908 ± 0.058
4.29LeuGlu: 4.29 ± 0.048
2.675LeuPhe: 2.675 ± 0.037
9.383LeuGly: 9.383 ± 0.072
2.374LeuHis: 2.374 ± 0.034
3.365LeuIle: 3.365 ± 0.042
2.234LeuLys: 2.234 ± 0.032
11.32LeuLeu: 11.32 ± 0.111
1.698LeuMet: 1.698 ± 0.026
1.742LeuAsn: 1.742 ± 0.025
6.47LeuPro: 6.47 ± 0.068
2.163LeuGln: 2.163 ± 0.029
8.403LeuArg: 8.403 ± 0.071
5.365LeuSer: 5.365 ± 0.057
7.117LeuThr: 7.117 ± 0.054
8.878LeuVal: 8.878 ± 0.078
1.368LeuTrp: 1.368 ± 0.026
1.874LeuTyr: 1.874 ± 0.03
0.0LeuXaa: 0.0 ± 0.0
Met
2.192MetAla: 2.192 ± 0.028
0.151MetCys: 0.151 ± 0.008
0.869MetAsp: 0.869 ± 0.017
0.727MetGlu: 0.727 ± 0.019
0.483MetPhe: 0.483 ± 0.015
1.334MetGly: 1.334 ± 0.025
0.346MetHis: 0.346 ± 0.012
0.648MetIle: 0.648 ± 0.016
0.455MetLys: 0.455 ± 0.012
1.691MetLeu: 1.691 ± 0.027
0.315MetMet: 0.315 ± 0.013
0.476MetAsn: 0.476 ± 0.012
1.116MetPro: 1.116 ± 0.021
0.445MetGln: 0.445 ± 0.013
1.369MetArg: 1.369 ± 0.022
1.377MetSer: 1.377 ± 0.023
1.58MetThr: 1.58 ± 0.026
1.286MetVal: 1.286 ± 0.024
0.218MetTrp: 0.218 ± 0.01
0.337MetTyr: 0.337 ± 0.011
0.0MetXaa: 0.0 ± 0.0
Asn
2.148AsnAla: 2.148 ± 0.033
0.152AsnCys: 0.152 ± 0.007
0.986AsnAsp: 0.986 ± 0.018
0.797AsnGlu: 0.797 ± 0.019
0.508AsnPhe: 0.508 ± 0.014
1.877AsnGly: 1.877 ± 0.034
0.408AsnHis: 0.408 ± 0.012
0.676AsnIle: 0.676 ± 0.016
0.453AsnLys: 0.453 ± 0.016
1.676AsnLeu: 1.676 ± 0.026
0.336AsnMet: 0.336 ± 0.012
0.454AsnAsn: 0.454 ± 0.017
1.353AsnPro: 1.353 ± 0.023
0.522AsnGln: 0.522 ± 0.015
1.225AsnArg: 1.225 ± 0.023
0.982AsnSer: 0.982 ± 0.021
1.164AsnThr: 1.164 ± 0.023
1.381AsnVal: 1.381 ± 0.027
0.304AsnTrp: 0.304 ± 0.011
0.42AsnTyr: 0.42 ± 0.016
0.0AsnXaa: 0.0 ± 0.0
Pro
8.467ProAla: 8.467 ± 0.083
0.319ProCys: 0.319 ± 0.012
4.58ProAsp: 4.58 ± 0.052
4.195ProGlu: 4.195 ± 0.05
1.526ProPhe: 1.526 ± 0.025
6.199ProGly: 6.199 ± 0.054
1.418ProHis: 1.418 ± 0.028
1.204ProIle: 1.204 ± 0.023
1.302ProLys: 1.302 ± 0.026
5.39ProLeu: 5.39 ± 0.049
1.003ProMet: 1.003 ± 0.017
0.899ProAsn: 0.899 ± 0.02
3.285ProPro: 3.285 ± 0.066
1.767ProGln: 1.767 ± 0.036
3.892ProArg: 3.892 ± 0.044
3.129ProSer: 3.129 ± 0.037
3.27ProThr: 3.27 ± 0.042
5.418ProVal: 5.418 ± 0.045
0.895ProTrp: 0.895 ± 0.018
1.386ProTyr: 1.386 ± 0.025
0.0ProXaa: 0.0 ± 0.0
Gln
3.563GlnAla: 3.563 ± 0.043
0.161GlnCys: 0.161 ± 0.008
1.474GlnAsp: 1.474 ± 0.022
1.469GlnGlu: 1.469 ± 0.028
0.703GlnPhe: 0.703 ± 0.017
2.351GlnGly: 2.351 ± 0.03
0.66GlnHis: 0.66 ± 0.014
1.091GlnIle: 1.091 ± 0.021
0.718GlnLys: 0.718 ± 0.018
3.025GlnLeu: 3.025 ± 0.038
0.505GlnMet: 0.505 ± 0.014
0.529GlnAsn: 0.529 ± 0.014
1.668GlnPro: 1.668 ± 0.034
1.307GlnGln: 1.307 ± 0.038
2.299GlnArg: 2.299 ± 0.033
1.323GlnSer: 1.323 ± 0.022
1.341GlnThr: 1.341 ± 0.026
2.307GlnVal: 2.307 ± 0.03
0.476GlnTrp: 0.476 ± 0.012
0.617GlnTyr: 0.617 ± 0.017
0.0GlnXaa: 0.0 ± 0.0
Arg
9.933ArgAla: 9.933 ± 0.092
0.555ArgCys: 0.555 ± 0.015
4.285ArgAsp: 4.285 ± 0.043
4.476ArgGlu: 4.476 ± 0.044
2.268ArgPhe: 2.268 ± 0.027
5.736ArgGly: 5.736 ± 0.045
2.086ArgHis: 2.086 ± 0.031
3.202ArgIle: 3.202 ± 0.031
1.621ArgLys: 1.621 ± 0.026
8.449ArgLeu: 8.449 ± 0.079
1.669ArgMet: 1.669 ± 0.023
1.268ArgAsn: 1.268 ± 0.022
4.697ArgPro: 4.697 ± 0.048
2.184ArgGln: 2.184 ± 0.029
7.38ArgArg: 7.38 ± 0.07
3.953ArgSer: 3.953 ± 0.042
5.536ArgThr: 5.536 ± 0.047
5.755ArgVal: 5.755 ± 0.049
1.327ArgTrp: 1.327 ± 0.019
1.719ArgTyr: 1.719 ± 0.026
0.0ArgXaa: 0.0 ± 0.0
Ser
6.936SerAla: 6.936 ± 0.057
0.39SerCys: 0.39 ± 0.013
2.789SerAsp: 2.789 ± 0.032
2.33SerGlu: 2.33 ± 0.031
1.576SerPhe: 1.576 ± 0.027
6.185SerGly: 6.185 ± 0.062
0.989SerHis: 0.989 ± 0.018
1.409SerIle: 1.409 ± 0.028
1.125SerLys: 1.125 ± 0.024
4.855SerLeu: 4.855 ± 0.046
1.071SerMet: 1.071 ± 0.021
0.895SerAsn: 0.895 ± 0.021
3.054SerPro: 3.054 ± 0.038
1.286SerGln: 1.286 ± 0.022
3.547SerArg: 3.547 ± 0.042
2.931SerSer: 2.931 ± 0.047
3.169SerThr: 3.169 ± 0.039
4.449SerVal: 4.449 ± 0.04
0.944SerTrp: 0.944 ± 0.021
1.303SerTyr: 1.303 ± 0.022
0.0SerXaa: 0.0 ± 0.0
Thr
9.025ThrAla: 9.025 ± 0.057
0.423ThrCys: 0.423 ± 0.014
3.847ThrAsp: 3.847 ± 0.043
3.247ThrGlu: 3.247 ± 0.043
1.752ThrPhe: 1.752 ± 0.025
6.803ThrGly: 6.803 ± 0.052
1.242ThrHis: 1.242 ± 0.021
1.725ThrIle: 1.725 ± 0.03
1.286ThrLys: 1.286 ± 0.03
5.961ThrLeu: 5.961 ± 0.057
0.954ThrMet: 0.954 ± 0.02
1.007ThrAsn: 1.007 ± 0.023
4.112ThrPro: 4.112 ± 0.052
1.432ThrGln: 1.432 ± 0.025
3.956ThrArg: 3.956 ± 0.042
3.284ThrSer: 3.284 ± 0.043
3.949ThrThr: 3.949 ± 0.049
6.322ThrVal: 6.322 ± 0.054
0.941ThrTrp: 0.941 ± 0.018
1.478ThrTyr: 1.478 ± 0.028
0.0ThrXaa: 0.0 ± 0.0
Val
10.872ValAla: 10.872 ± 0.081
0.773ValCys: 0.773 ± 0.019
5.087ValAsp: 5.087 ± 0.048
4.588ValGlu: 4.588 ± 0.05
2.421ValPhe: 2.421 ± 0.037
6.641ValGly: 6.641 ± 0.061
1.962ValHis: 1.962 ± 0.034
2.823ValIle: 2.823 ± 0.04
1.843ValLys: 1.843 ± 0.035
9.595ValLeu: 9.595 ± 0.082
1.405ValMet: 1.405 ± 0.025
1.652ValAsn: 1.652 ± 0.03
5.287ValPro: 5.287 ± 0.052
2.077ValGln: 2.077 ± 0.031
7.142ValArg: 7.142 ± 0.061
4.348ValSer: 4.348 ± 0.044
5.799ValThr: 5.799 ± 0.061
8.041ValVal: 8.041 ± 0.079
1.167ValTrp: 1.167 ± 0.023
1.574ValTyr: 1.574 ± 0.022
0.0ValXaa: 0.0 ± 0.0
Trp
1.699TrpAla: 1.699 ± 0.029
0.158TrpCys: 0.158 ± 0.007
0.842TrpAsp: 0.842 ± 0.019
0.72TrpGlu: 0.72 ± 0.018
0.548TrpPhe: 0.548 ± 0.016
1.092TrpGly: 1.092 ± 0.022
0.38TrpHis: 0.38 ± 0.013
0.572TrpIle: 0.572 ± 0.013
0.405TrpLys: 0.405 ± 0.014
1.771TrpLeu: 1.771 ± 0.029
0.298TrpMet: 0.298 ± 0.01
0.414TrpAsn: 0.414 ± 0.014
0.772TrpPro: 0.772 ± 0.017
0.613TrpGln: 0.613 ± 0.017
1.333TrpArg: 1.333 ± 0.024
0.951TrpSer: 0.951 ± 0.021
1.031TrpThr: 1.031 ± 0.022
1.005TrpVal: 1.005 ± 0.021
0.334TrpTrp: 0.334 ± 0.01
0.357TrpTyr: 0.357 ± 0.011
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.873TyrAla: 2.873 ± 0.034
0.169TyrCys: 0.169 ± 0.008
1.548TyrAsp: 1.548 ± 0.029
1.284TyrGlu: 1.284 ± 0.023
0.677TyrPhe: 0.677 ± 0.017
2.327TyrGly: 2.327 ± 0.036
0.365TyrHis: 0.365 ± 0.012
0.495TyrIle: 0.495 ± 0.013
0.461TyrLys: 0.461 ± 0.017
2.095TyrLeu: 2.095 ± 0.029
0.251TyrMet: 0.251 ± 0.011
0.406TyrAsn: 0.406 ± 0.012
1.023TyrPro: 1.023 ± 0.022
0.584TyrGln: 0.584 ± 0.017
1.793TyrArg: 1.793 ± 0.027
0.97TyrSer: 0.97 ± 0.021
1.218TyrThr: 1.218 ± 0.025
1.76TyrVal: 1.76 ± 0.025
0.362TyrTrp: 0.362 ± 0.012
0.479TyrTyr: 0.479 ± 0.015
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
0.001XaaXaa: 0.001 ± 0.001
Statistics based on 8133 proteins (2640280 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