Amino acid dipepetide frequency for Pseudomonas sp. StFLB209

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
13.158AlaAla: 13.158 ± 0.142
1.173AlaCys: 1.173 ± 0.026
5.888AlaAsp: 5.888 ± 0.058
6.448AlaGlu: 6.448 ± 0.07
3.628AlaPhe: 3.628 ± 0.055
9.263AlaGly: 9.263 ± 0.092
2.165AlaHis: 2.165 ± 0.04
5.047AlaIle: 5.047 ± 0.058
3.34AlaLys: 3.34 ± 0.062
13.89AlaLeu: 13.89 ± 0.162
2.809AlaMet: 2.809 ± 0.042
3.101AlaAsn: 3.101 ± 0.054
4.837AlaPro: 4.837 ± 0.07
5.764AlaGln: 5.764 ± 0.109
7.445AlaArg: 7.445 ± 0.071
6.571AlaSer: 6.571 ± 0.072
4.903AlaThr: 4.903 ± 0.059
7.419AlaVal: 7.419 ± 0.07
1.665AlaTrp: 1.665 ± 0.036
2.419AlaTyr: 2.419 ± 0.038
0.0AlaXaa: 0.0 ± 0.0
Cys
1.071CysAla: 1.071 ± 0.026
0.169CysCys: 0.169 ± 0.01
0.512CysAsp: 0.512 ± 0.016
0.531CysGlu: 0.531 ± 0.017
0.324CysPhe: 0.324 ± 0.012
0.938CysGly: 0.938 ± 0.024
0.245CysHis: 0.245 ± 0.012
0.425CysIle: 0.425 ± 0.013
0.294CysLys: 0.294 ± 0.01
1.072CysLeu: 1.072 ± 0.027
0.191CysMet: 0.191 ± 0.01
0.248CysAsn: 0.248 ± 0.011
0.465CysPro: 0.465 ± 0.015
0.395CysGln: 0.395 ± 0.015
0.601CysArg: 0.601 ± 0.018
0.653CysSer: 0.653 ± 0.019
0.443CysThr: 0.443 ± 0.016
0.676CysVal: 0.676 ± 0.02
0.146CysTrp: 0.146 ± 0.009
0.231CysTyr: 0.231 ± 0.011
0.0CysXaa: 0.0 ± 0.0
Asp
5.622AspAla: 5.622 ± 0.061
0.512AspCys: 0.512 ± 0.016
2.813AspAsp: 2.813 ± 0.046
3.301AspGlu: 3.301 ± 0.046
2.069AspPhe: 2.069 ± 0.039
4.335AspGly: 4.335 ± 0.057
1.173AspHis: 1.173 ± 0.028
2.659AspIle: 2.659 ± 0.036
1.889AspLys: 1.889 ± 0.033
5.959AspLeu: 5.959 ± 0.06
1.154AspMet: 1.154 ± 0.025
1.752AspAsn: 1.752 ± 0.037
2.866AspPro: 2.866 ± 0.046
2.338AspGln: 2.338 ± 0.033
3.172AspArg: 3.172 ± 0.041
3.109AspSer: 3.109 ± 0.045
2.508AspThr: 2.508 ± 0.039
3.545AspVal: 3.545 ± 0.049
0.951AspTrp: 0.951 ± 0.024
1.726AspTyr: 1.726 ± 0.032
0.0AspXaa: 0.0 ± 0.0
Glu
5.877GluAla: 5.877 ± 0.064
0.365GluCys: 0.365 ± 0.015
2.342GluAsp: 2.342 ± 0.037
2.602GluGlu: 2.602 ± 0.056
1.771GluPhe: 1.771 ± 0.035
3.556GluGly: 3.556 ± 0.047
1.702GluHis: 1.702 ± 0.036
2.539GluIle: 2.539 ± 0.038
1.892GluLys: 1.892 ± 0.034
6.814GluLeu: 6.814 ± 0.067
1.129GluMet: 1.129 ± 0.024
1.476GluAsn: 1.476 ± 0.031
2.574GluPro: 2.574 ± 0.044
4.172GluGln: 4.172 ± 0.067
4.771GluArg: 4.771 ± 0.069
2.618GluSer: 2.618 ± 0.043
2.413GluThr: 2.413 ± 0.039
4.063GluVal: 4.063 ± 0.054
0.732GluTrp: 0.732 ± 0.019
1.227GluTyr: 1.227 ± 0.03
0.0GluXaa: 0.0 ± 0.0
Phe
3.907PheAla: 3.907 ± 0.045
0.419PheCys: 0.419 ± 0.016
2.467PheAsp: 2.467 ± 0.035
2.124PheGlu: 2.124 ± 0.033
1.425PhePhe: 1.425 ± 0.033
3.057PheGly: 3.057 ± 0.048
0.677PheHis: 0.677 ± 0.018
1.906PheIle: 1.906 ± 0.034
1.363PheLys: 1.363 ± 0.029
2.908PheLeu: 2.908 ± 0.051
0.837PheMet: 0.837 ± 0.024
1.495PheAsn: 1.495 ± 0.034
1.303PhePro: 1.303 ± 0.027
1.184PheGln: 1.184 ± 0.021
1.746PheArg: 1.746 ± 0.03
2.689PheSer: 2.689 ± 0.04
1.887PheThr: 1.887 ± 0.035
2.482PheVal: 2.482 ± 0.036
0.54PheTrp: 0.54 ± 0.019
1.044PheTyr: 1.044 ± 0.026
0.0PheXaa: 0.0 ± 0.0
Gly
7.355GlyAla: 7.355 ± 0.079
0.891GlyCys: 0.891 ± 0.022
3.741GlyAsp: 3.741 ± 0.051
4.484GlyGlu: 4.484 ± 0.056
3.333GlyPhe: 3.333 ± 0.049
5.775GlyGly: 5.775 ± 0.091
1.855GlyHis: 1.855 ± 0.036
4.157GlyIle: 4.157 ± 0.049
3.272GlyLys: 3.272 ± 0.048
9.363GlyLeu: 9.363 ± 0.082
2.108GlyMet: 2.108 ± 0.035
2.482GlyAsn: 2.482 ± 0.052
2.628GlyPro: 2.628 ± 0.038
4.077GlyGln: 4.077 ± 0.049
4.899GlyArg: 4.899 ± 0.053
4.847GlySer: 4.847 ± 0.065
3.77GlyThr: 3.77 ± 0.065
5.956GlyVal: 5.956 ± 0.063
1.443GlyTrp: 1.443 ± 0.026
2.492GlyTyr: 2.492 ± 0.038
0.0GlyXaa: 0.0 ± 0.0
His
2.305HisAla: 2.305 ± 0.032
0.31HisCys: 0.31 ± 0.013
1.332HisAsp: 1.332 ± 0.031
1.259HisGlu: 1.259 ± 0.03
0.926HisPhe: 0.926 ± 0.022
1.938HisGly: 1.938 ± 0.038
0.595HisHis: 0.595 ± 0.02
0.938HisIle: 0.938 ± 0.024
0.689HisLys: 0.689 ± 0.019
2.522HisLeu: 2.522 ± 0.041
0.502HisMet: 0.502 ± 0.016
0.687HisAsn: 0.687 ± 0.019
1.344HisPro: 1.344 ± 0.031
1.002HisGln: 1.002 ± 0.022
1.358HisArg: 1.358 ± 0.032
1.385HisSer: 1.385 ± 0.032
1.022HisThr: 1.022 ± 0.026
1.39HisVal: 1.39 ± 0.028
0.454HisTrp: 0.454 ± 0.017
0.757HisTyr: 0.757 ± 0.022
0.0HisXaa: 0.0 ± 0.0
Ile
5.79IleAla: 5.79 ± 0.063
0.476IleCys: 0.476 ± 0.015
3.365IleAsp: 3.365 ± 0.044
3.423IleGlu: 3.423 ± 0.04
1.394IlePhe: 1.394 ± 0.031
4.451IleGly: 4.451 ± 0.062
0.969IleHis: 0.969 ± 0.024
2.103IleIle: 2.103 ± 0.04
1.709IleLys: 1.709 ± 0.031
3.997IleLeu: 3.997 ± 0.053
0.823IleMet: 0.823 ± 0.021
1.89IleAsn: 1.89 ± 0.035
2.066IlePro: 2.066 ± 0.036
1.635IleGln: 1.635 ± 0.033
2.892IleArg: 2.892 ± 0.042
3.116IleSer: 3.116 ± 0.042
2.521IleThr: 2.521 ± 0.04
3.193IleVal: 3.193 ± 0.044
0.498IleTrp: 0.498 ± 0.019
1.072IleTyr: 1.072 ± 0.023
0.0IleXaa: 0.0 ± 0.0
Lys
3.984LysAla: 3.984 ± 0.056
0.206LysCys: 0.206 ± 0.011
1.692LysAsp: 1.692 ± 0.036
1.43LysGlu: 1.43 ± 0.036
0.839LysPhe: 0.839 ± 0.023
2.494LysGly: 2.494 ± 0.036
0.693LysHis: 0.693 ± 0.02
1.494LysIle: 1.494 ± 0.031
1.246LysLys: 1.246 ± 0.039
3.563LysLeu: 3.563 ± 0.048
0.645LysMet: 0.645 ± 0.021
1.0LysAsn: 1.0 ± 0.026
2.061LysPro: 2.061 ± 0.039
1.516LysGln: 1.516 ± 0.032
2.273LysArg: 2.273 ± 0.039
1.773LysSer: 1.773 ± 0.03
1.858LysThr: 1.858 ± 0.034
2.631LysVal: 2.631 ± 0.043
0.352LysTrp: 0.352 ± 0.014
0.672LysTyr: 0.672 ± 0.02
0.0LysXaa: 0.0 ± 0.0
Leu
14.1LeuAla: 14.1 ± 0.102
1.222LeuCys: 1.222 ± 0.027
6.744LeuAsp: 6.744 ± 0.076
6.271LeuGlu: 6.271 ± 0.068
4.039LeuPhe: 4.039 ± 0.054
9.228LeuGly: 9.228 ± 0.08
2.534LeuHis: 2.534 ± 0.043
5.554LeuIle: 5.554 ± 0.074
4.202LeuLys: 4.202 ± 0.055
13.437LeuLeu: 13.437 ± 0.144
2.47LeuMet: 2.47 ± 0.046
3.868LeuAsn: 3.868 ± 0.05
6.293LeuPro: 6.293 ± 0.067
5.327LeuGln: 5.327 ± 0.063
7.527LeuArg: 7.527 ± 0.075
7.78LeuSer: 7.78 ± 0.069
5.862LeuThr: 5.862 ± 0.11
7.654LeuVal: 7.654 ± 0.08
1.365LeuTrp: 1.365 ± 0.034
2.549LeuTyr: 2.549 ± 0.036
0.0LeuXaa: 0.0 ± 0.0
Met
2.536MetAla: 2.536 ± 0.042
0.163MetCys: 0.163 ± 0.009
0.984MetAsp: 0.984 ± 0.024
0.837MetGlu: 0.837 ± 0.019
0.681MetPhe: 0.681 ± 0.019
1.581MetGly: 1.581 ± 0.033
0.511MetHis: 0.511 ± 0.017
1.116MetIle: 1.116 ± 0.027
0.76MetLys: 0.76 ± 0.024
2.677MetLeu: 2.677 ± 0.044
0.502MetMet: 0.502 ± 0.016
0.832MetAsn: 0.832 ± 0.025
1.283MetPro: 1.283 ± 0.03
1.079MetGln: 1.079 ± 0.026
1.432MetArg: 1.432 ± 0.031
1.773MetSer: 1.773 ± 0.028
1.405MetThr: 1.405 ± 0.032
1.482MetVal: 1.482 ± 0.033
0.168MetTrp: 0.168 ± 0.009
0.39MetTyr: 0.39 ± 0.014
0.0MetXaa: 0.0 ± 0.0
Asn
3.269AsnAla: 3.269 ± 0.051
0.265AsnCys: 0.265 ± 0.01
1.693AsnAsp: 1.693 ± 0.034
1.514AsnGlu: 1.514 ± 0.033
1.077AsnPhe: 1.077 ± 0.024
2.721AsnGly: 2.721 ± 0.053
0.651AsnHis: 0.651 ± 0.02
1.487AsnIle: 1.487 ± 0.027
0.911AsnLys: 0.911 ± 0.022
3.63AsnLeu: 3.63 ± 0.049
0.636AsnMet: 0.636 ± 0.017
1.047AsnAsn: 1.047 ± 0.031
1.982AsnPro: 1.982 ± 0.033
1.346AsnGln: 1.346 ± 0.033
1.999AsnArg: 1.999 ± 0.037
1.74AsnSer: 1.74 ± 0.033
1.558AsnThr: 1.558 ± 0.031
2.036AsnVal: 2.036 ± 0.042
0.523AsnTrp: 0.523 ± 0.017
0.865AsnTyr: 0.865 ± 0.026
0.0AsnXaa: 0.0 ± 0.0
Pro
5.948ProAla: 5.948 ± 0.083
0.356ProCys: 0.356 ± 0.013
2.957ProAsp: 2.957 ± 0.044
3.032ProGlu: 3.032 ± 0.044
1.714ProPhe: 1.714 ± 0.035
4.116ProGly: 4.116 ± 0.051
1.048ProHis: 1.048 ± 0.024
1.916ProIle: 1.916 ± 0.035
1.401ProLys: 1.401 ± 0.033
5.753ProLeu: 5.753 ± 0.07
1.107ProMet: 1.107 ± 0.026
1.31ProAsn: 1.31 ± 0.03
1.872ProPro: 1.872 ± 0.04
2.501ProGln: 2.501 ± 0.04
2.522ProArg: 2.522 ± 0.043
2.432ProSer: 2.432 ± 0.039
2.159ProThr: 2.159 ± 0.034
4.033ProVal: 4.033 ± 0.051
0.754ProTrp: 0.754 ± 0.021
1.151ProTyr: 1.151 ± 0.026
0.0ProXaa: 0.0 ± 0.0
Gln
6.656GlnAla: 6.656 ± 0.08
0.321GlnCys: 0.321 ± 0.014
2.081GlnAsp: 2.081 ± 0.037
1.989GlnGlu: 1.989 ± 0.036
1.389GlnPhe: 1.389 ± 0.026
3.626GlnGly: 3.626 ± 0.051
1.207GlnHis: 1.207 ± 0.029
2.287GlnIle: 2.287 ± 0.037
1.183GlnLys: 1.183 ± 0.027
5.954GlnLeu: 5.954 ± 0.071
1.085GlnMet: 1.085 ± 0.024
1.165GlnAsn: 1.165 ± 0.025
2.685GlnPro: 2.685 ± 0.041
3.227GlnGln: 3.227 ± 0.065
4.048GlnArg: 4.048 ± 0.059
2.601GlnSer: 2.601 ± 0.04
2.324GlnThr: 2.324 ± 0.036
3.981GlnVal: 3.981 ± 0.101
0.809GlnTrp: 0.809 ± 0.023
1.122GlnTyr: 1.122 ± 0.028
0.0GlnXaa: 0.0 ± 0.0
Arg
5.988ArgAla: 5.988 ± 0.062
0.624ArgCys: 0.624 ± 0.019
3.517ArgAsp: 3.517 ± 0.044
4.158ArgGlu: 4.158 ± 0.055
2.72ArgPhe: 2.72 ± 0.038
3.964ArgGly: 3.964 ± 0.044
1.838ArgHis: 1.838 ± 0.034
3.512ArgIle: 3.512 ± 0.047
2.05ArgLys: 2.05 ± 0.035
8.612ArgLeu: 8.612 ± 0.085
1.571ArgMet: 1.571 ± 0.033
2.139ArgAsn: 2.139 ± 0.034
2.801ArgPro: 2.801 ± 0.041
3.887ArgGln: 3.887 ± 0.053
4.275ArgArg: 4.275 ± 0.057
3.75ArgSer: 3.75 ± 0.049
2.731ArgThr: 2.731 ± 0.038
4.391ArgVal: 4.391 ± 0.054
1.099ArgTrp: 1.099 ± 0.028
2.107ArgTyr: 2.107 ± 0.036
0.0ArgXaa: 0.0 ± 0.0
Ser
6.55SerAla: 6.55 ± 0.07
0.539SerCys: 0.539 ± 0.017
2.965SerAsp: 2.965 ± 0.041
3.063SerGlu: 3.063 ± 0.037
2.318SerPhe: 2.318 ± 0.035
5.535SerGly: 5.535 ± 0.067
1.44SerHis: 1.44 ± 0.028
2.895SerIle: 2.895 ± 0.045
1.768SerLys: 1.768 ± 0.035
7.42SerLeu: 7.42 ± 0.075
1.351SerMet: 1.351 ± 0.031
1.791SerAsn: 1.791 ± 0.036
2.714SerPro: 2.714 ± 0.039
2.718SerGln: 2.718 ± 0.045
3.941SerArg: 3.941 ± 0.053
3.68SerSer: 3.68 ± 0.054
3.054SerThr: 3.054 ± 0.048
4.173SerVal: 4.173 ± 0.06
0.82SerTrp: 0.82 ± 0.024
1.577SerTyr: 1.577 ± 0.032
0.0SerXaa: 0.0 ± 0.0
Thr
5.422ThrAla: 5.422 ± 0.121
0.48ThrCys: 0.48 ± 0.017
2.538ThrAsp: 2.538 ± 0.039
2.363ThrGlu: 2.363 ± 0.04
1.729ThrPhe: 1.729 ± 0.032
4.221ThrGly: 4.221 ± 0.063
1.065ThrHis: 1.065 ± 0.022
1.944ThrIle: 1.944 ± 0.041
1.004ThrLys: 1.004 ± 0.025
6.709ThrLeu: 6.709 ± 0.058
0.769ThrMet: 0.769 ± 0.02
1.2ThrAsn: 1.2 ± 0.028
3.065ThrPro: 3.065 ± 0.047
2.136ThrGln: 2.136 ± 0.04
3.201ThrArg: 3.201 ± 0.039
2.726ThrSer: 2.726 ± 0.042
2.564ThrThr: 2.564 ± 0.1
3.624ThrVal: 3.624 ± 0.055
0.721ThrTrp: 0.721 ± 0.021
1.194ThrTyr: 1.194 ± 0.028
0.0ThrXaa: 0.0 ± 0.0
Val
7.691ValAla: 7.691 ± 0.135
0.723ValCys: 0.723 ± 0.021
3.819ValAsp: 3.819 ± 0.047
4.104ValGlu: 4.104 ± 0.06
2.552ValPhe: 2.552 ± 0.042
5.162ValGly: 5.162 ± 0.057
1.436ValHis: 1.436 ± 0.027
3.743ValIle: 3.743 ± 0.048
2.237ValLys: 2.237 ± 0.037
8.347ValLeu: 8.347 ± 0.088
1.72ValMet: 1.72 ± 0.038
2.228ValAsn: 2.228 ± 0.04
3.267ValPro: 3.267 ± 0.047
3.056ValGln: 3.056 ± 0.044
4.433ValArg: 4.433 ± 0.054
4.569ValSer: 4.569 ± 0.051
3.734ValThr: 3.734 ± 0.049
5.476ValVal: 5.476 ± 0.07
0.945ValTrp: 0.945 ± 0.027
1.606ValTyr: 1.606 ± 0.031
0.0ValXaa: 0.0 ± 0.0
Trp
1.167TrpAla: 1.167 ± 0.026
0.149TrpCys: 0.149 ± 0.01
0.633TrpAsp: 0.633 ± 0.018
0.541TrpGlu: 0.541 ± 0.017
0.581TrpPhe: 0.581 ± 0.018
0.917TrpGly: 0.917 ± 0.022
0.385TrpHis: 0.385 ± 0.014
0.662TrpIle: 0.662 ± 0.02
0.438TrpLys: 0.438 ± 0.015
2.307TrpLeu: 2.307 ± 0.045
0.346TrpMet: 0.346 ± 0.014
0.474TrpAsn: 0.474 ± 0.017
0.653TrpPro: 0.653 ± 0.02
1.067TrpGln: 1.067 ± 0.028
1.166TrpArg: 1.166 ± 0.031
0.92TrpSer: 0.92 ± 0.023
0.671TrpThr: 0.671 ± 0.017
0.977TrpVal: 0.977 ± 0.025
0.234TrpTrp: 0.234 ± 0.011
0.348TrpTyr: 0.348 ± 0.014
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.534TyrAla: 2.534 ± 0.04
0.266TyrCys: 0.266 ± 0.011
1.371TyrAsp: 1.371 ± 0.035
1.162TyrGlu: 1.162 ± 0.027
0.949TyrPhe: 0.949 ± 0.024
2.05TyrGly: 2.05 ± 0.038
0.528TyrHis: 0.528 ± 0.016
1.0TyrIle: 1.0 ± 0.026
0.773TyrLys: 0.773 ± 0.022
3.093TyrLeu: 3.093 ± 0.045
0.439TyrMet: 0.439 ± 0.015
0.761TyrAsn: 0.761 ± 0.022
1.321TyrPro: 1.321 ± 0.029
1.312TyrGln: 1.312 ± 0.028
2.036TyrArg: 2.036 ± 0.035
1.58TyrSer: 1.58 ± 0.032
1.288TyrThr: 1.288 ± 0.029
1.664TyrVal: 1.664 ± 0.035
0.418TyrTrp: 0.418 ± 0.017
0.703TyrTyr: 0.703 ± 0.02
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 5594 proteins (1859865 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