Amino acid dipepetide frequency for Clostridium thermobutyricum

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
2.917AlaAla: 2.917 ± 0.079
0.624AlaCys: 0.624 ± 0.027
2.136AlaAsp: 2.136 ± 0.061
3.019AlaGlu: 3.019 ± 0.076
2.404AlaPhe: 2.404 ± 0.053
3.306AlaGly: 3.306 ± 0.066
0.727AlaHis: 0.727 ± 0.028
5.636AlaIle: 5.636 ± 0.096
4.57AlaLys: 4.57 ± 0.078
5.525AlaLeu: 5.525 ± 0.075
1.5AlaMet: 1.5 ± 0.043
2.579AlaAsn: 2.579 ± 0.048
1.327AlaPro: 1.327 ± 0.04
1.209AlaGln: 1.209 ± 0.043
1.662AlaArg: 1.662 ± 0.049
2.969AlaSer: 2.969 ± 0.064
2.47AlaThr: 2.47 ± 0.063
3.332AlaVal: 3.332 ± 0.071
0.367AlaTrp: 0.367 ± 0.021
1.938AlaTyr: 1.938 ± 0.053
0.0AlaXaa: 0.0 ± 0.0
Cys
0.549CysAla: 0.549 ± 0.023
0.171CysCys: 0.171 ± 0.017
0.643CysAsp: 0.643 ± 0.024
0.746CysGlu: 0.746 ± 0.033
0.476CysPhe: 0.476 ± 0.023
1.059CysGly: 1.059 ± 0.035
0.183CysHis: 0.183 ± 0.014
1.186CysIle: 1.186 ± 0.038
1.02CysLys: 1.02 ± 0.039
0.912CysLeu: 0.912 ± 0.032
0.254CysMet: 0.254 ± 0.019
0.736CysAsn: 0.736 ± 0.03
0.407CysPro: 0.407 ± 0.022
0.186CysGln: 0.186 ± 0.015
0.36CysArg: 0.36 ± 0.018
0.704CysSer: 0.704 ± 0.03
0.54CysThr: 0.54 ± 0.027
0.586CysVal: 0.586 ± 0.024
0.061CysTrp: 0.061 ± 0.007
0.411CysTyr: 0.411 ± 0.022
0.0CysXaa: 0.0 ± 0.0
Asp
2.128AspAla: 2.128 ± 0.053
0.585AspCys: 0.585 ± 0.028
2.369AspAsp: 2.369 ± 0.056
4.414AspGlu: 4.414 ± 0.075
2.805AspPhe: 2.805 ± 0.056
3.366AspGly: 3.366 ± 0.068
0.501AspHis: 0.501 ± 0.021
6.075AspIle: 6.075 ± 0.093
5.872AspLys: 5.872 ± 0.09
5.049AspLeu: 5.049 ± 0.074
1.432AspMet: 1.432 ± 0.037
3.27AspAsn: 3.27 ± 0.062
1.138AspPro: 1.138 ± 0.036
0.704AspGln: 0.704 ± 0.031
1.81AspArg: 1.81 ± 0.049
3.219AspSer: 3.219 ± 0.053
2.286AspThr: 2.286 ± 0.059
3.229AspVal: 3.229 ± 0.063
0.34AspTrp: 0.34 ± 0.021
2.638AspTyr: 2.638 ± 0.052
0.0AspXaa: 0.0 ± 0.0
Glu
3.953GluAla: 3.953 ± 0.079
0.732GluCys: 0.732 ± 0.027
4.462GluAsp: 4.462 ± 0.073
7.988GluGlu: 7.988 ± 0.143
3.416GluPhe: 3.416 ± 0.066
4.43GluGly: 4.43 ± 0.078
0.913GluHis: 0.913 ± 0.037
8.04GluIle: 8.04 ± 0.114
9.04GluLys: 9.04 ± 0.131
6.917GluLeu: 6.917 ± 0.102
2.037GluMet: 2.037 ± 0.044
6.22GluAsn: 6.22 ± 0.099
1.242GluPro: 1.242 ± 0.036
1.467GluGln: 1.467 ± 0.049
2.663GluArg: 2.663 ± 0.061
3.572GluSer: 3.572 ± 0.066
2.923GluThr: 2.923 ± 0.057
5.073GluVal: 5.073 ± 0.081
0.449GluTrp: 0.449 ± 0.023
3.254GluTyr: 3.254 ± 0.061
0.0GluXaa: 0.0 ± 0.0
Phe
2.187PheAla: 2.187 ± 0.053
0.507PheCys: 0.507 ± 0.02
2.46PheAsp: 2.46 ± 0.05
2.876PheGlu: 2.876 ± 0.058
2.254PhePhe: 2.254 ± 0.069
3.1PheGly: 3.1 ± 0.068
0.505PheHis: 0.505 ± 0.023
5.293PheIle: 5.293 ± 0.089
4.597PheLys: 4.597 ± 0.072
4.359PheLeu: 4.359 ± 0.078
1.152PheMet: 1.152 ± 0.041
3.422PheAsn: 3.422 ± 0.062
1.106PhePro: 1.106 ± 0.036
0.821PheGln: 0.821 ± 0.028
1.378PheArg: 1.378 ± 0.039
3.281PheSer: 3.281 ± 0.058
2.249PheThr: 2.249 ± 0.046
2.593PheVal: 2.593 ± 0.065
0.29PheTrp: 0.29 ± 0.018
1.869PheTyr: 1.869 ± 0.046
0.0PheXaa: 0.0 ± 0.0
Gly
3.923GlyAla: 3.923 ± 0.082
0.858GlyCys: 0.858 ± 0.032
3.155GlyAsp: 3.155 ± 0.06
4.622GlyGlu: 4.622 ± 0.077
3.211GlyPhe: 3.211 ± 0.065
4.209GlyGly: 4.209 ± 0.094
0.892GlyHis: 0.892 ± 0.035
7.099GlyIle: 7.099 ± 0.102
5.706GlyLys: 5.706 ± 0.081
5.69GlyLeu: 5.69 ± 0.094
1.782GlyMet: 1.782 ± 0.049
3.422GlyAsn: 3.422 ± 0.071
1.308GlyPro: 1.308 ± 0.107
1.384GlyGln: 1.384 ± 0.05
2.205GlyArg: 2.205 ± 0.053
3.532GlySer: 3.532 ± 0.071
3.366GlyThr: 3.366 ± 0.07
4.832GlyVal: 4.832 ± 0.082
0.478GlyTrp: 0.478 ± 0.025
2.953GlyTyr: 2.953 ± 0.059
0.0GlyXaa: 0.0 ± 0.0
His
0.557HisAla: 0.557 ± 0.024
0.183HisCys: 0.183 ± 0.015
0.579HisAsp: 0.579 ± 0.023
0.723HisGlu: 0.723 ± 0.027
0.638HisPhe: 0.638 ± 0.025
0.893HisGly: 0.893 ± 0.031
0.275HisHis: 0.275 ± 0.019
1.275HisIle: 1.275 ± 0.029
1.095HisLys: 1.095 ± 0.038
1.091HisLeu: 1.091 ± 0.034
0.35HisMet: 0.35 ± 0.021
0.742HisAsn: 0.742 ± 0.027
0.553HisPro: 0.553 ± 0.026
0.278HisGln: 0.278 ± 0.018
0.438HisArg: 0.438 ± 0.02
0.777HisSer: 0.777 ± 0.031
0.586HisThr: 0.586 ± 0.025
0.608HisVal: 0.608 ± 0.026
0.085HisTrp: 0.085 ± 0.01
0.479HisTyr: 0.479 ± 0.023
0.0HisXaa: 0.0 ± 0.0
Ile
5.355IleAla: 5.355 ± 0.086
1.287IleCys: 1.287 ± 0.034
6.063IleAsp: 6.063 ± 0.085
7.948IleGlu: 7.948 ± 0.12
4.851IlePhe: 4.851 ± 0.099
6.718IleGly: 6.718 ± 0.093
1.179IleHis: 1.179 ± 0.031
10.617IleIle: 10.617 ± 0.17
10.118IleLys: 10.118 ± 0.133
10.234IleLeu: 10.234 ± 0.126
2.316IleMet: 2.316 ± 0.051
7.041IleAsn: 7.041 ± 0.107
3.201IlePro: 3.201 ± 0.068
2.274IleGln: 2.274 ± 0.054
3.095IleArg: 3.095 ± 0.051
7.077IleSer: 7.077 ± 0.098
4.891IleThr: 4.891 ± 0.078
6.327IleVal: 6.327 ± 0.092
0.556IleTrp: 0.556 ± 0.027
3.822IleTyr: 3.822 ± 0.071
0.0IleXaa: 0.0 ± 0.0
Lys
4.72LysAla: 4.72 ± 0.094
0.93LysCys: 0.93 ± 0.036
6.373LysAsp: 6.373 ± 0.087
10.949LysGlu: 10.949 ± 0.148
3.841LysPhe: 3.841 ± 0.065
5.615LysGly: 5.615 ± 0.085
1.021LysHis: 1.021 ± 0.032
9.503LysIle: 9.503 ± 0.119
9.475LysLys: 9.475 ± 0.126
8.046LysLeu: 8.046 ± 0.109
2.493LysMet: 2.493 ± 0.06
7.483LysAsn: 7.483 ± 0.105
1.952LysPro: 1.952 ± 0.056
1.734LysGln: 1.734 ± 0.044
3.413LysArg: 3.413 ± 0.075
5.265LysSer: 5.265 ± 0.084
4.263LysThr: 4.263 ± 0.064
6.004LysVal: 6.004 ± 0.087
0.617LysTrp: 0.617 ± 0.027
4.161LysTyr: 4.161 ± 0.07
0.0LysXaa: 0.0 ± 0.0
Leu
4.794LeuAla: 4.794 ± 0.077
0.95LeuCys: 0.95 ± 0.032
5.302LeuAsp: 5.302 ± 0.08
7.171LeuGlu: 7.171 ± 0.113
3.915LeuPhe: 3.915 ± 0.082
6.245LeuGly: 6.245 ± 0.09
0.987LeuHis: 0.987 ± 0.036
9.087LeuIle: 9.087 ± 0.139
9.228LeuLys: 9.228 ± 0.127
7.558LeuLeu: 7.558 ± 0.105
2.171LeuMet: 2.171 ± 0.05
6.846LeuAsn: 6.846 ± 0.101
2.504LeuPro: 2.504 ± 0.056
1.85LeuGln: 1.85 ± 0.045
2.983LeuArg: 2.983 ± 0.06
6.534LeuSer: 6.534 ± 0.1
4.444LeuThr: 4.444 ± 0.072
5.344LeuVal: 5.344 ± 0.081
0.545LeuTrp: 0.545 ± 0.024
3.168LeuTyr: 3.168 ± 0.068
0.0LeuXaa: 0.0 ± 0.0
Met
1.559MetAla: 1.559 ± 0.042
0.26MetCys: 0.26 ± 0.018
1.369MetAsp: 1.369 ± 0.04
1.826MetGlu: 1.826 ± 0.04
1.095MetPhe: 1.095 ± 0.033
1.68MetGly: 1.68 ± 0.041
0.329MetHis: 0.329 ± 0.016
2.393MetIle: 2.393 ± 0.052
2.636MetLys: 2.636 ± 0.053
2.041MetLeu: 2.041 ± 0.046
0.616MetMet: 0.616 ± 0.022
1.657MetAsn: 1.657 ± 0.046
0.834MetPro: 0.834 ± 0.032
0.645MetGln: 0.645 ± 0.025
0.893MetArg: 0.893 ± 0.031
1.547MetSer: 1.547 ± 0.04
1.084MetThr: 1.084 ± 0.034
1.396MetVal: 1.396 ± 0.039
0.182MetTrp: 0.182 ± 0.015
0.856MetTyr: 0.856 ± 0.024
0.0MetXaa: 0.0 ± 0.0
Asn
2.714AsnAla: 2.714 ± 0.057
0.721AsnCys: 0.721 ± 0.027
3.075AsnAsp: 3.075 ± 0.054
5.041AsnGlu: 5.041 ± 0.088
2.991AsnPhe: 2.991 ± 0.06
4.153AsnGly: 4.153 ± 0.086
0.755AsnHis: 0.755 ± 0.028
7.916AsnIle: 7.916 ± 0.102
7.245AsnLys: 7.245 ± 0.115
6.447AsnLeu: 6.447 ± 0.101
1.638AsnMet: 1.638 ± 0.039
5.257AsnAsn: 5.257 ± 0.121
2.191AsnPro: 2.191 ± 0.057
1.309AsnGln: 1.309 ± 0.038
2.136AsnArg: 2.136 ± 0.051
4.582AsnSer: 4.582 ± 0.091
3.022AsnThr: 3.022 ± 0.073
3.486AsnVal: 3.486 ± 0.062
0.415AsnTrp: 0.415 ± 0.022
2.817AsnTyr: 2.817 ± 0.06
0.0AsnXaa: 0.0 ± 0.0
Pro
1.181ProAla: 1.181 ± 0.035
0.27ProCys: 0.27 ± 0.017
1.176ProAsp: 1.176 ± 0.04
2.005ProGlu: 2.005 ± 0.066
1.376ProPhe: 1.376 ± 0.042
1.542ProGly: 1.542 ± 0.046
0.428ProHis: 0.428 ± 0.02
2.696ProIle: 2.696 ± 0.058
2.274ProLys: 2.274 ± 0.051
2.271ProLeu: 2.271 ± 0.048
0.617ProMet: 0.617 ± 0.029
1.68ProAsn: 1.68 ± 0.046
0.517ProPro: 0.517 ± 0.027
0.753ProGln: 0.753 ± 0.041
0.749ProArg: 0.749 ± 0.031
1.622ProSer: 1.622 ± 0.049
1.356ProThr: 1.356 ± 0.042
1.848ProVal: 1.848 ± 0.05
0.241ProTrp: 0.241 ± 0.019
1.152ProTyr: 1.152 ± 0.036
0.0ProXaa: 0.0 ± 0.0
Gln
1.186GlnAla: 1.186 ± 0.046
0.212GlnCys: 0.212 ± 0.018
0.931GlnAsp: 0.931 ± 0.032
1.494GlnGlu: 1.494 ± 0.045
0.855GlnPhe: 0.855 ± 0.03
1.396GlnGly: 1.396 ± 0.065
0.239GlnHis: 0.239 ± 0.014
2.113GlnIle: 2.113 ± 0.047
1.881GlnLys: 1.881 ± 0.049
1.741GlnLeu: 1.741 ± 0.042
0.58GlnMet: 0.58 ± 0.028
1.496GlnAsn: 1.496 ± 0.046
0.484GlnPro: 0.484 ± 0.027
0.511GlnGln: 0.511 ± 0.025
0.796GlnArg: 0.796 ± 0.031
1.228GlnSer: 1.228 ± 0.039
1.032GlnThr: 1.032 ± 0.038
1.283GlnVal: 1.283 ± 0.041
0.184GlnTrp: 0.184 ± 0.02
0.85GlnTyr: 0.85 ± 0.03
0.0GlnXaa: 0.0 ± 0.0
Arg
1.656ArgAla: 1.656 ± 0.043
0.411ArgCys: 0.411 ± 0.022
1.969ArgAsp: 1.969 ± 0.052
3.348ArgGlu: 3.348 ± 0.063
1.424ArgPhe: 1.424 ± 0.038
2.026ArgGly: 2.026 ± 0.056
0.416ArgHis: 0.416 ± 0.018
3.079ArgIle: 3.079 ± 0.059
3.24ArgLys: 3.24 ± 0.069
2.826ArgLeu: 2.826 ± 0.061
0.896ArgMet: 0.896 ± 0.036
2.033ArgAsn: 2.033 ± 0.05
0.739ArgPro: 0.739 ± 0.028
0.697ArgGln: 0.697 ± 0.028
1.422ArgArg: 1.422 ± 0.048
1.469ArgSer: 1.469 ± 0.044
1.451ArgThr: 1.451 ± 0.04
2.238ArgVal: 2.238 ± 0.055
0.208ArgTrp: 0.208 ± 0.014
1.412ArgTyr: 1.412 ± 0.039
0.0ArgXaa: 0.0 ± 0.0
Ser
2.823SerAla: 2.823 ± 0.067
0.621SerCys: 0.621 ± 0.022
3.028SerAsp: 3.028 ± 0.057
4.292SerGlu: 4.292 ± 0.079
3.238SerPhe: 3.238 ± 0.055
4.08SerGly: 4.08 ± 0.079
0.857SerHis: 0.857 ± 0.03
6.714SerIle: 6.714 ± 0.11
5.917SerLys: 5.917 ± 0.076
6.182SerLeu: 6.182 ± 0.09
1.384SerMet: 1.384 ± 0.036
4.202SerAsn: 4.202 ± 0.082
1.534SerPro: 1.534 ± 0.044
1.354SerGln: 1.354 ± 0.043
1.893SerArg: 1.893 ± 0.044
3.934SerSer: 3.934 ± 0.082
3.045SerThr: 3.045 ± 0.063
3.528SerVal: 3.528 ± 0.066
0.388SerTrp: 0.388 ± 0.019
2.544SerTyr: 2.544 ± 0.048
0.0SerXaa: 0.0 ± 0.0
Thr
2.578ThrAla: 2.578 ± 0.072
0.509ThrCys: 0.509 ± 0.022
2.237ThrAsp: 2.237 ± 0.049
2.935ThrGlu: 2.935 ± 0.056
2.27ThrPhe: 2.27 ± 0.046
3.648ThrGly: 3.648 ± 0.076
0.667ThrHis: 0.667 ± 0.028
4.92ThrIle: 4.92 ± 0.086
3.776ThrLys: 3.776 ± 0.066
4.666ThrLeu: 4.666 ± 0.073
1.007ThrMet: 1.007 ± 0.038
2.821ThrAsn: 2.821 ± 0.079
1.635ThrPro: 1.635 ± 0.043
0.959ThrGln: 0.959 ± 0.038
1.53ThrArg: 1.53 ± 0.04
2.988ThrSer: 2.988 ± 0.068
2.436ThrThr: 2.436 ± 0.068
3.204ThrVal: 3.204 ± 0.064
0.297ThrTrp: 0.297 ± 0.019
1.827ThrTyr: 1.827 ± 0.041
0.0ThrXaa: 0.0 ± 0.0
Val
3.296ValAla: 3.296 ± 0.075
0.813ValCys: 0.813 ± 0.031
3.352ValAsp: 3.352 ± 0.069
4.263ValGlu: 4.263 ± 0.073
2.939ValPhe: 2.939 ± 0.055
4.095ValGly: 4.095 ± 0.092
0.753ValHis: 0.753 ± 0.028
6.306ValIle: 6.306 ± 0.094
5.58ValLys: 5.58 ± 0.087
5.875ValLeu: 5.875 ± 0.095
1.482ValMet: 1.482 ± 0.038
3.663ValAsn: 3.663 ± 0.08
1.799ValPro: 1.799 ± 0.041
1.457ValGln: 1.457 ± 0.048
1.889ValArg: 1.889 ± 0.047
4.046ValSer: 4.046 ± 0.069
3.155ValThr: 3.155 ± 0.081
4.187ValVal: 4.187 ± 0.074
0.379ValTrp: 0.379 ± 0.02
2.291ValTyr: 2.291 ± 0.05
0.0ValXaa: 0.0 ± 0.0
Trp
0.356TrpAla: 0.356 ± 0.02
0.087TrpCys: 0.087 ± 0.008
0.355TrpAsp: 0.355 ± 0.021
0.365TrpGlu: 0.365 ± 0.021
0.293TrpPhe: 0.293 ± 0.02
0.502TrpGly: 0.502 ± 0.033
0.11TrpHis: 0.11 ± 0.012
0.715TrpIle: 0.715 ± 0.03
0.455TrpLys: 0.455 ± 0.023
0.53TrpLeu: 0.53 ± 0.025
0.193TrpMet: 0.193 ± 0.016
0.468TrpAsn: 0.468 ± 0.024
0.138TrpPro: 0.138 ± 0.011
0.199TrpGln: 0.199 ± 0.014
0.239TrpArg: 0.239 ± 0.016
0.368TrpSer: 0.368 ± 0.022
0.325TrpThr: 0.325 ± 0.017
0.369TrpVal: 0.369 ± 0.018
0.085TrpTrp: 0.085 ± 0.009
0.259TrpTyr: 0.259 ± 0.022
0.0TrpXaa: 0.0 ± 0.0
Tyr
1.786TyrAla: 1.786 ± 0.047
0.458TyrCys: 0.458 ± 0.023
2.199TyrAsp: 2.199 ± 0.053
2.77TyrGlu: 2.77 ± 0.065
2.009TyrPhe: 2.009 ± 0.051
2.564TyrGly: 2.564 ± 0.048
0.464TyrHis: 0.464 ± 0.022
4.308TyrIle: 4.308 ± 0.085
4.133TyrLys: 4.133 ± 0.072
3.668TyrLeu: 3.668 ± 0.064
0.999TyrMet: 0.999 ± 0.032
2.871TyrAsn: 2.871 ± 0.059
1.143TyrPro: 1.143 ± 0.039
0.702TyrGln: 0.702 ± 0.023
1.406TyrArg: 1.406 ± 0.04
2.845TyrSer: 2.845 ± 0.055
1.983TyrThr: 1.983 ± 0.053
2.151TyrVal: 2.151 ± 0.046
0.242TyrTrp: 0.242 ± 0.017
1.769TyrTyr: 1.769 ± 0.051
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 3294 proteins (975620 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