Amino acid dipepetide frequency for Bacillus sp. DSL-17

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
5.367AlaAla: 5.367 ± 0.085
0.599AlaCys: 0.599 ± 0.023
3.11AlaAsp: 3.11 ± 0.044
4.25AlaGlu: 4.25 ± 0.058
3.186AlaPhe: 3.186 ± 0.052
5.145AlaGly: 5.145 ± 0.07
1.203AlaHis: 1.203 ± 0.033
6.188AlaIle: 6.188 ± 0.081
4.653AlaLys: 4.653 ± 0.064
6.796AlaLeu: 6.796 ± 0.081
1.899AlaMet: 1.899 ± 0.042
2.95AlaAsn: 2.95 ± 0.047
1.935AlaPro: 1.935 ± 0.036
2.065AlaGln: 2.065 ± 0.041
2.297AlaArg: 2.297 ± 0.046
3.948AlaSer: 3.948 ± 0.061
3.444AlaThr: 3.444 ± 0.056
4.962AlaVal: 4.962 ± 0.065
0.543AlaTrp: 0.543 ± 0.019
2.178AlaTyr: 2.178 ± 0.04
0.0AlaXaa: 0.0 ± 0.0
Cys
0.419CysAla: 0.419 ± 0.017
0.097CysCys: 0.097 ± 0.009
0.372CysAsp: 0.372 ± 0.015
0.5CysGlu: 0.5 ± 0.021
0.352CysPhe: 0.352 ± 0.016
0.664CysGly: 0.664 ± 0.025
0.2CysHis: 0.2 ± 0.012
0.584CysIle: 0.584 ± 0.02
0.395CysLys: 0.395 ± 0.018
0.729CysLeu: 0.729 ± 0.022
0.185CysMet: 0.185 ± 0.011
0.304CysAsn: 0.304 ± 0.016
0.34CysPro: 0.34 ± 0.015
0.259CysGln: 0.259 ± 0.014
0.261CysArg: 0.261 ± 0.013
0.541CysSer: 0.541 ± 0.019
0.384CysThr: 0.384 ± 0.016
0.398CysVal: 0.398 ± 0.017
0.072CysTrp: 0.072 ± 0.007
0.254CysTyr: 0.254 ± 0.013
0.0CysXaa: 0.0 ± 0.0
Asp
3.012AspAla: 3.012 ± 0.051
0.341AspCys: 0.341 ± 0.017
2.344AspAsp: 2.344 ± 0.046
4.282AspGlu: 4.282 ± 0.066
2.318AspPhe: 2.318 ± 0.043
3.152AspGly: 3.152 ± 0.053
1.318AspHis: 1.318 ± 0.032
4.264AspIle: 4.264 ± 0.058
3.153AspLys: 3.153 ± 0.054
4.948AspLeu: 4.948 ± 0.058
1.32AspMet: 1.32 ± 0.03
1.807AspAsn: 1.807 ± 0.039
1.966AspPro: 1.966 ± 0.034
2.049AspGln: 2.049 ± 0.041
2.008AspArg: 2.008 ± 0.038
2.605AspSer: 2.605 ± 0.046
2.32AspThr: 2.32 ± 0.042
3.682AspVal: 3.682 ± 0.056
0.572AspTrp: 0.572 ± 0.022
2.03AspTyr: 2.03 ± 0.04
0.0AspXaa: 0.0 ± 0.0
Glu
5.047GluAla: 5.047 ± 0.071
0.402GluCys: 0.402 ± 0.017
3.663GluAsp: 3.663 ± 0.06
6.749GluGlu: 6.749 ± 0.091
2.652GluPhe: 2.652 ± 0.039
4.165GluGly: 4.165 ± 0.068
1.563GluHis: 1.563 ± 0.036
5.949GluIle: 5.949 ± 0.062
6.715GluLys: 6.715 ± 0.091
7.126GluLeu: 7.126 ± 0.082
2.197GluMet: 2.197 ± 0.037
4.046GluAsn: 4.046 ± 0.058
1.747GluPro: 1.747 ± 0.037
3.279GluGln: 3.279 ± 0.057
3.11GluArg: 3.11 ± 0.046
3.501GluSer: 3.501 ± 0.049
3.742GluThr: 3.742 ± 0.055
4.923GluVal: 4.923 ± 0.064
0.794GluTrp: 0.794 ± 0.022
2.288GluTyr: 2.288 ± 0.042
0.0GluXaa: 0.0 ± 0.0
Phe
2.965PheAla: 2.965 ± 0.047
0.358PheCys: 0.358 ± 0.017
2.363PheAsp: 2.363 ± 0.042
2.821PheGlu: 2.821 ± 0.05
2.393PhePhe: 2.393 ± 0.05
3.387PheGly: 3.387 ± 0.053
1.052PheHis: 1.052 ± 0.031
4.253PheIle: 4.253 ± 0.067
2.6PheLys: 2.6 ± 0.044
4.781PheLeu: 4.781 ± 0.081
1.118PheMet: 1.118 ± 0.028
1.997PheAsn: 1.997 ± 0.037
1.667PhePro: 1.667 ± 0.036
1.665PheGln: 1.665 ± 0.042
1.413PheArg: 1.413 ± 0.03
3.319PheSer: 3.319 ± 0.043
2.714PheThr: 2.714 ± 0.043
3.194PheVal: 3.194 ± 0.049
0.467PheTrp: 0.467 ± 0.019
1.718PheTyr: 1.718 ± 0.036
0.0PheXaa: 0.0 ± 0.0
Gly
4.846GlyAla: 4.846 ± 0.073
0.643GlyCys: 0.643 ± 0.024
2.942GlyAsp: 2.942 ± 0.047
4.376GlyGlu: 4.376 ± 0.061
3.443GlyPhe: 3.443 ± 0.054
4.734GlyGly: 4.734 ± 0.074
1.344GlyHis: 1.344 ± 0.038
6.322GlyIle: 6.322 ± 0.076
4.949GlyLys: 4.949 ± 0.054
6.658GlyLeu: 6.658 ± 0.084
2.104GlyMet: 2.104 ± 0.041
2.921GlyAsn: 2.921 ± 0.045
1.708GlyPro: 1.708 ± 0.037
2.133GlyGln: 2.133 ± 0.037
2.417GlyArg: 2.417 ± 0.041
3.96GlySer: 3.96 ± 0.051
3.962GlyThr: 3.962 ± 0.063
5.003GlyVal: 5.003 ± 0.054
0.761GlyTrp: 0.761 ± 0.022
2.762GlyTyr: 2.762 ± 0.043
0.0GlyXaa: 0.0 ± 0.0
His
1.285HisAla: 1.285 ± 0.029
0.183HisCys: 0.183 ± 0.011
1.041HisAsp: 1.041 ± 0.028
1.433HisGlu: 1.433 ± 0.031
1.128HisPhe: 1.128 ± 0.03
1.374HisGly: 1.374 ± 0.036
0.747HisHis: 0.747 ± 0.03
1.636HisIle: 1.636 ± 0.032
1.141HisLys: 1.141 ± 0.028
2.151HisLeu: 2.151 ± 0.044
0.522HisMet: 0.522 ± 0.021
0.816HisAsn: 0.816 ± 0.024
1.148HisPro: 1.148 ± 0.032
0.87HisGln: 0.87 ± 0.029
0.832HisArg: 0.832 ± 0.023
1.335HisSer: 1.335 ± 0.03
1.096HisThr: 1.096 ± 0.026
1.444HisVal: 1.444 ± 0.032
0.215HisTrp: 0.215 ± 0.012
0.912HisTyr: 0.912 ± 0.026
0.0HisXaa: 0.0 ± 0.0
Ile
6.141IleAla: 6.141 ± 0.086
0.716IleCys: 0.716 ± 0.024
4.726IleAsp: 4.726 ± 0.062
6.171IleGlu: 6.171 ± 0.069
3.599IlePhe: 3.599 ± 0.061
6.482IleGly: 6.482 ± 0.082
1.811IleHis: 1.811 ± 0.034
6.939IleIle: 6.939 ± 0.098
5.216IleLys: 5.216 ± 0.062
7.673IleLeu: 7.673 ± 0.088
1.981IleMet: 1.981 ± 0.037
3.813IleAsn: 3.813 ± 0.051
3.641IlePro: 3.641 ± 0.05
3.026IleGln: 3.026 ± 0.046
3.085IleArg: 3.085 ± 0.051
5.737IleSer: 5.737 ± 0.075
4.656IleThr: 4.656 ± 0.055
6.025IleVal: 6.025 ± 0.084
0.666IleTrp: 0.666 ± 0.025
2.634IleTyr: 2.634 ± 0.043
0.0IleXaa: 0.0 ± 0.0
Lys
4.453LysAla: 4.453 ± 0.061
0.356LysCys: 0.356 ± 0.016
3.889LysAsp: 3.889 ± 0.058
6.876LysGlu: 6.876 ± 0.089
2.013LysPhe: 2.013 ± 0.036
4.489LysGly: 4.489 ± 0.053
1.378LysHis: 1.378 ± 0.035
5.28LysIle: 5.28 ± 0.063
5.949LysLys: 5.949 ± 0.075
6.141LysLeu: 6.141 ± 0.069
2.275LysMet: 2.275 ± 0.04
3.777LysAsn: 3.777 ± 0.057
2.224LysPro: 2.224 ± 0.045
3.381LysGln: 3.381 ± 0.054
3.189LysArg: 3.189 ± 0.048
3.68LysSer: 3.68 ± 0.054
3.674LysThr: 3.674 ± 0.057
4.794LysVal: 4.794 ± 0.055
0.809LysTrp: 0.809 ± 0.026
2.217LysTyr: 2.217 ± 0.034
0.001LysXaa: 0.001 ± 0.001
Leu
6.957LeuAla: 6.957 ± 0.077
0.697LeuCys: 0.697 ± 0.023
4.678LeuAsp: 4.678 ± 0.064
6.444LeuGlu: 6.444 ± 0.088
5.059LeuPhe: 5.059 ± 0.075
6.456LeuGly: 6.456 ± 0.089
1.981LeuHis: 1.981 ± 0.042
7.866LeuIle: 7.866 ± 0.101
6.702LeuLys: 6.702 ± 0.073
10.331LeuLeu: 10.331 ± 0.104
2.459LeuMet: 2.459 ± 0.045
4.513LeuAsn: 4.513 ± 0.057
3.791LeuPro: 3.791 ± 0.053
3.732LeuGln: 3.732 ± 0.063
3.351LeuArg: 3.351 ± 0.054
6.953LeuSer: 6.953 ± 0.071
5.968LeuThr: 5.968 ± 0.07
6.348LeuVal: 6.348 ± 0.073
0.791LeuTrp: 0.791 ± 0.025
3.041LeuTyr: 3.041 ± 0.046
0.0LeuXaa: 0.0 ± 0.0
Met
1.861MetAla: 1.861 ± 0.039
0.152MetCys: 0.152 ± 0.011
1.294MetAsp: 1.294 ± 0.032
1.799MetGlu: 1.799 ± 0.034
1.108MetPhe: 1.108 ± 0.028
1.699MetGly: 1.699 ± 0.037
0.388MetHis: 0.388 ± 0.015
2.524MetIle: 2.524 ± 0.047
2.537MetLys: 2.537 ± 0.042
2.539MetLeu: 2.539 ± 0.05
0.898MetMet: 0.898 ± 0.027
1.711MetAsn: 1.711 ± 0.035
0.948MetPro: 0.948 ± 0.024
0.834MetGln: 0.834 ± 0.028
0.922MetArg: 0.922 ± 0.026
1.728MetSer: 1.728 ± 0.034
1.675MetThr: 1.675 ± 0.033
1.763MetVal: 1.763 ± 0.033
0.187MetTrp: 0.187 ± 0.012
0.719MetTyr: 0.719 ± 0.023
0.001MetXaa: 0.001 ± 0.001
Asn
2.754AsnAla: 2.754 ± 0.039
0.335AsnCys: 0.335 ± 0.017
2.445AsnAsp: 2.445 ± 0.046
3.983AsnGlu: 3.983 ± 0.063
1.715AsnPhe: 1.715 ± 0.038
3.547AsnGly: 3.547 ± 0.053
1.193AsnHis: 1.193 ± 0.032
3.787AsnIle: 3.787 ± 0.054
3.365AsnLys: 3.365 ± 0.049
4.044AsnLeu: 4.044 ± 0.053
1.303AsnMet: 1.303 ± 0.031
2.288AsnAsn: 2.288 ± 0.045
2.211AsnPro: 2.211 ± 0.04
2.086AsnGln: 2.086 ± 0.045
1.995AsnArg: 1.995 ± 0.038
2.545AsnSer: 2.545 ± 0.049
2.291AsnThr: 2.291 ± 0.04
3.259AsnVal: 3.259 ± 0.043
0.544AsnTrp: 0.544 ± 0.021
1.587AsnTyr: 1.587 ± 0.037
0.0AsnXaa: 0.0 ± 0.0
Pro
2.156ProAla: 2.156 ± 0.044
0.22ProCys: 0.22 ± 0.012
1.828ProAsp: 1.828 ± 0.033
2.787ProGlu: 2.787 ± 0.048
1.999ProPhe: 1.999 ± 0.04
2.213ProGly: 2.213 ± 0.045
0.791ProHis: 0.791 ± 0.024
3.152ProIle: 3.152 ± 0.052
2.153ProLys: 2.153 ± 0.037
3.608ProLeu: 3.608 ± 0.061
0.791ProMet: 0.791 ± 0.023
1.79ProAsn: 1.79 ± 0.035
0.939ProPro: 0.939 ± 0.027
1.104ProGln: 1.104 ± 0.028
0.987ProArg: 0.987 ± 0.024
2.226ProSer: 2.226 ± 0.038
2.061ProThr: 2.061 ± 0.038
2.617ProVal: 2.617 ± 0.043
0.385ProTrp: 0.385 ± 0.019
1.408ProTyr: 1.408 ± 0.033
0.0ProXaa: 0.0 ± 0.0
Gln
2.573GlnAla: 2.573 ± 0.041
0.211GlnCys: 0.211 ± 0.012
1.658GlnAsp: 1.658 ± 0.037
2.762GlnGlu: 2.762 ± 0.05
1.734GlnPhe: 1.734 ± 0.039
2.106GlnGly: 2.106 ± 0.048
0.846GlnHis: 0.846 ± 0.026
2.791GlnIle: 2.791 ± 0.05
2.827GlnLys: 2.827 ± 0.05
4.011GlnLeu: 4.011 ± 0.058
1.056GlnMet: 1.056 ± 0.026
1.746GlnAsn: 1.746 ± 0.034
1.225GlnPro: 1.225 ± 0.03
1.832GlnGln: 1.832 ± 0.065
1.293GlnArg: 1.293 ± 0.034
2.284GlnSer: 2.284 ± 0.044
2.042GlnThr: 2.042 ± 0.038
2.401GlnVal: 2.401 ± 0.039
0.377GlnTrp: 0.377 ± 0.017
1.325GlnTyr: 1.325 ± 0.032
0.0GlnXaa: 0.0 ± 0.0
Arg
2.181ArgAla: 2.181 ± 0.043
0.222ArgCys: 0.222 ± 0.013
1.879ArgAsp: 1.879 ± 0.039
2.922ArgGlu: 2.922 ± 0.052
1.771ArgPhe: 1.771 ± 0.039
2.206ArgGly: 2.206 ± 0.039
0.732ArgHis: 0.732 ± 0.025
2.981ArgIle: 2.981 ± 0.049
3.078ArgLys: 3.078 ± 0.049
3.643ArgLeu: 3.643 ± 0.05
1.158ArgMet: 1.158 ± 0.029
1.917ArgAsn: 1.917 ± 0.036
1.195ArgPro: 1.195 ± 0.031
1.333ArgGln: 1.333 ± 0.032
1.619ArgArg: 1.619 ± 0.039
2.06ArgSer: 2.06 ± 0.04
1.904ArgThr: 1.904 ± 0.037
2.361ArgVal: 2.361 ± 0.043
0.354ArgTrp: 0.354 ± 0.019
1.353ArgTyr: 1.353 ± 0.033
0.0ArgXaa: 0.0 ± 0.0
Ser
3.63SerAla: 3.63 ± 0.05
0.436SerCys: 0.436 ± 0.017
2.859SerAsp: 2.859 ± 0.044
4.027SerGlu: 4.027 ± 0.057
3.49SerPhe: 3.49 ± 0.06
4.366SerGly: 4.366 ± 0.063
1.32SerHis: 1.32 ± 0.033
5.586SerIle: 5.586 ± 0.056
4.111SerLys: 4.111 ± 0.058
6.362SerLeu: 6.362 ± 0.069
1.733SerMet: 1.733 ± 0.036
2.675SerAsn: 2.675 ± 0.046
2.077SerPro: 2.077 ± 0.042
2.015SerGln: 2.015 ± 0.037
2.138SerArg: 2.138 ± 0.036
4.221SerSer: 4.221 ± 0.064
3.365SerThr: 3.365 ± 0.044
4.054SerVal: 4.054 ± 0.056
0.647SerTrp: 0.647 ± 0.023
2.28SerTyr: 2.28 ± 0.039
0.0SerXaa: 0.0 ± 0.0
Thr
3.808ThrAla: 3.808 ± 0.056
0.406ThrCys: 0.406 ± 0.016
2.576ThrAsp: 2.576 ± 0.048
3.49ThrGlu: 3.49 ± 0.054
2.788ThrPhe: 2.788 ± 0.042
4.08ThrGly: 4.08 ± 0.054
1.032ThrHis: 1.032 ± 0.027
5.167ThrIle: 5.167 ± 0.071
3.558ThrLys: 3.558 ± 0.049
5.301ThrLeu: 5.301 ± 0.069
1.26ThrMet: 1.26 ± 0.03
2.799ThrAsn: 2.799 ± 0.047
2.197ThrPro: 2.197 ± 0.041
1.392ThrGln: 1.392 ± 0.032
1.751ThrArg: 1.751 ± 0.033
3.422ThrSer: 3.422 ± 0.043
3.105ThrThr: 3.105 ± 0.049
4.128ThrVal: 4.128 ± 0.054
0.557ThrTrp: 0.557 ± 0.02
2.03ThrTyr: 2.03 ± 0.038
0.0ThrXaa: 0.0 ± 0.0
Val
4.699ValAla: 4.699 ± 0.068
0.571ValCys: 0.571 ± 0.021
3.5ValAsp: 3.5 ± 0.056
4.887ValGlu: 4.887 ± 0.067
3.12ValPhe: 3.12 ± 0.051
4.646ValGly: 4.646 ± 0.063
1.342ValHis: 1.342 ± 0.032
6.076ValIle: 6.076 ± 0.067
4.828ValLys: 4.828 ± 0.053
6.716ValLeu: 6.716 ± 0.074
1.86ValMet: 1.86 ± 0.039
3.335ValAsn: 3.335 ± 0.052
2.573ValPro: 2.573 ± 0.045
2.219ValGln: 2.219 ± 0.037
2.4ValArg: 2.4 ± 0.043
4.537ValSer: 4.537 ± 0.057
4.156ValThr: 4.156 ± 0.055
4.928ValVal: 4.928 ± 0.064
0.581ValTrp: 0.581 ± 0.02
2.127ValTyr: 2.127 ± 0.04
0.0ValXaa: 0.0 ± 0.0
Trp
0.557TrpAla: 0.557 ± 0.022
0.067TrpCys: 0.067 ± 0.006
0.49TrpAsp: 0.49 ± 0.021
0.661TrpGlu: 0.661 ± 0.025
0.483TrpPhe: 0.483 ± 0.018
0.657TrpGly: 0.657 ± 0.021
0.19TrpHis: 0.19 ± 0.012
0.852TrpIle: 0.852 ± 0.029
0.746TrpLys: 0.746 ± 0.023
1.103TrpLeu: 1.103 ± 0.03
0.331TrpMet: 0.331 ± 0.017
0.575TrpAsn: 0.575 ± 0.018
0.236TrpPro: 0.236 ± 0.013
0.33TrpGln: 0.33 ± 0.015
0.372TrpArg: 0.372 ± 0.016
0.611TrpSer: 0.611 ± 0.021
0.48TrpThr: 0.48 ± 0.017
0.623TrpVal: 0.623 ± 0.022
0.142TrpTrp: 0.142 ± 0.01
0.331TrpTyr: 0.331 ± 0.018
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.006TyrAla: 2.006 ± 0.041
0.298TyrCys: 0.298 ± 0.015
1.835TyrAsp: 1.835 ± 0.039
2.44TyrGlu: 2.44 ± 0.039
1.891TyrPhe: 1.891 ± 0.041
2.423TyrGly: 2.423 ± 0.044
0.878TyrHis: 0.878 ± 0.027
2.542TyrIle: 2.542 ± 0.046
2.171TyrLys: 2.171 ± 0.041
3.456TyrLeu: 3.456 ± 0.052
0.836TyrMet: 0.836 ± 0.027
1.495TyrAsn: 1.495 ± 0.034
1.446TyrPro: 1.446 ± 0.034
1.496TyrGln: 1.496 ± 0.036
1.43TyrArg: 1.43 ± 0.035
2.178TyrSer: 2.178 ± 0.036
1.806TyrThr: 1.806 ± 0.036
2.195TyrVal: 2.195 ± 0.038
0.374TyrTrp: 0.374 ± 0.018
1.46TyrTyr: 1.46 ± 0.033
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
0.001XaaMet: 0.001 ± 0.001
0.0XaaAsn: 0.0 ± 0.0
0.0XaaPro: 0.0 ± 0.0
0.001XaaGln: 0.001 ± 0.001
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 4971 proteins (1439422 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