Amino acid dipepetide frequency for Campylobacter jejuni subsp. jejuni serotype O:2 (strain ATCC 700819 / NCTC 11168)

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
3.984AlaAla: 3.984 ± 0.117
1.085AlaCys: 1.085 ± 0.048
2.673AlaAsp: 2.673 ± 0.083
2.592AlaGlu: 2.592 ± 0.086
4.057AlaPhe: 4.057 ± 0.106
3.594AlaGly: 3.594 ± 0.105
1.152AlaHis: 1.152 ± 0.055
5.661AlaIle: 5.661 ± 0.133
7.647AlaLys: 7.647 ± 0.137
9.035AlaLeu: 9.035 ± 0.148
1.915AlaMet: 1.915 ± 0.07
4.262AlaAsn: 4.262 ± 0.101
1.716AlaPro: 1.716 ± 0.062
2.214AlaGln: 2.214 ± 0.07
2.557AlaArg: 2.557 ± 0.074
4.445AlaSer: 4.445 ± 0.106
2.791AlaThr: 2.791 ± 0.081
3.39AlaVal: 3.39 ± 0.1
0.476AlaTrp: 0.476 ± 0.031
2.854AlaTyr: 2.854 ± 0.082
0.0AlaXaa: 0.0 ± 0.0
Cys
0.913CysAla: 0.913 ± 0.047
0.124CysCys: 0.124 ± 0.016
0.833CysAsp: 0.833 ± 0.045
1.161CysGlu: 1.161 ± 0.048
0.742CysPhe: 0.742 ± 0.047
1.002CysGly: 1.002 ± 0.047
0.234CysHis: 0.234 ± 0.025
1.09CysIle: 1.09 ± 0.047
0.968CysLys: 0.968 ± 0.053
1.057CysLeu: 1.057 ± 0.045
0.28CysMet: 0.28 ± 0.02
0.506CysAsn: 0.506 ± 0.03
0.364CysPro: 0.364 ± 0.031
0.293CysGln: 0.293 ± 0.023
0.248CysArg: 0.248 ± 0.022
0.687CysSer: 0.687 ± 0.038
0.431CysThr: 0.431 ± 0.028
0.858CysVal: 0.858 ± 0.039
0.049CysTrp: 0.049 ± 0.01
0.35CysTyr: 0.35 ± 0.025
0.0CysXaa: 0.0 ± 0.0
Asp
3.232AspAla: 3.232 ± 0.087
0.539AspCys: 0.539 ± 0.032
2.6AspAsp: 2.6 ± 0.092
5.572AspGlu: 5.572 ± 0.104
4.575AspPhe: 4.575 ± 0.1
2.708AspGly: 2.708 ± 0.084
0.659AspHis: 0.659 ± 0.038
4.756AspIle: 4.756 ± 0.097
5.246AspLys: 5.246 ± 0.094
5.771AspLeu: 5.771 ± 0.099
1.157AspMet: 1.157 ± 0.051
2.506AspAsn: 2.506 ± 0.064
1.283AspPro: 1.283 ± 0.055
1.089AspGln: 1.089 ± 0.052
1.407AspArg: 1.407 ± 0.054
2.588AspSer: 2.588 ± 0.066
2.22AspThr: 2.22 ± 0.073
2.508AspVal: 2.508 ± 0.069
0.295AspTrp: 0.295 ± 0.026
2.128AspTyr: 2.128 ± 0.065
0.0AspXaa: 0.0 ± 0.0
Glu
4.238GluAla: 4.238 ± 0.098
0.882GluCys: 0.882 ± 0.045
3.246GluAsp: 3.246 ± 0.082
5.004GluGlu: 5.004 ± 0.129
4.596GluPhe: 4.596 ± 0.102
3.206GluGly: 3.206 ± 0.095
1.1GluHis: 1.1 ± 0.05
6.933GluIle: 6.933 ± 0.131
7.69GluLys: 7.69 ± 0.156
8.125GluLeu: 8.125 ± 0.138
1.313GluMet: 1.313 ± 0.053
6.376GluAsn: 6.376 ± 0.129
1.213GluPro: 1.213 ± 0.054
2.575GluGln: 2.575 ± 0.07
2.21GluArg: 2.21 ± 0.072
3.571GluSer: 3.571 ± 0.085
1.781GluThr: 1.781 ± 0.062
3.62GluVal: 3.62 ± 0.099
0.482GluTrp: 0.482 ± 0.029
2.323GluTyr: 2.323 ± 0.07
0.0GluXaa: 0.0 ± 0.0
Phe
3.925PheAla: 3.925 ± 0.089
1.008PheCys: 1.008 ± 0.05
3.642PheAsp: 3.642 ± 0.074
3.972PheGlu: 3.972 ± 0.092
3.592PhePhe: 3.592 ± 0.109
3.496PheGly: 3.496 ± 0.089
0.864PheHis: 0.864 ± 0.042
5.431PheIle: 5.431 ± 0.119
5.472PheLys: 5.472 ± 0.122
6.734PheLeu: 6.734 ± 0.169
1.335PheMet: 1.335 ± 0.051
3.275PheAsn: 3.275 ± 0.083
1.179PhePro: 1.179 ± 0.048
1.268PheGln: 1.268 ± 0.05
1.455PheArg: 1.455 ± 0.062
4.366PheSer: 4.366 ± 0.101
2.36PheThr: 2.36 ± 0.07
3.346PheVal: 3.346 ± 0.091
0.587PheTrp: 0.587 ± 0.039
2.677PheTyr: 2.677 ± 0.089
0.0PheXaa: 0.0 ± 0.0
Gly
4.321GlyAla: 4.321 ± 0.108
0.624GlyCys: 0.624 ± 0.04
2.579GlyAsp: 2.579 ± 0.077
3.665GlyGlu: 3.665 ± 0.089
3.762GlyPhe: 3.762 ± 0.091
3.929GlyGly: 3.929 ± 0.112
0.947GlyHis: 0.947 ± 0.049
5.405GlyIle: 5.405 ± 0.111
4.659GlyLys: 4.659 ± 0.101
5.177GlyLeu: 5.177 ± 0.111
1.376GlyMet: 1.376 ± 0.053
2.563GlyAsn: 2.563 ± 0.099
0.837GlyPro: 0.837 ± 0.043
1.451GlyGln: 1.451 ± 0.06
1.72GlyArg: 1.72 ± 0.06
3.433GlySer: 3.433 ± 0.11
2.466GlyThr: 2.466 ± 0.08
4.539GlyVal: 4.539 ± 0.107
0.372GlyTrp: 0.372 ± 0.03
2.264GlyTyr: 2.264 ± 0.068
0.0GlyXaa: 0.0 ± 0.0
His
1.071HisAla: 1.071 ± 0.046
0.24HisCys: 0.24 ± 0.024
0.673HisAsp: 0.673 ± 0.039
1.065HisGlu: 1.065 ± 0.051
1.195HisPhe: 1.195 ± 0.048
0.931HisGly: 0.931 ± 0.042
0.37HisHis: 0.37 ± 0.033
1.333HisIle: 1.333 ± 0.054
1.339HisLys: 1.339 ± 0.055
1.937HisLeu: 1.937 ± 0.067
0.323HisMet: 0.323 ± 0.026
0.795HisAsn: 0.795 ± 0.045
0.76HisPro: 0.76 ± 0.038
0.575HisGln: 0.575 ± 0.034
0.516HisArg: 0.516 ± 0.036
1.161HisSer: 1.161 ± 0.053
0.821HisThr: 0.821 ± 0.038
0.563HisVal: 0.563 ± 0.032
0.11HisTrp: 0.11 ± 0.015
0.667HisTyr: 0.667 ± 0.037
0.0HisXaa: 0.0 ± 0.0
Ile
6.59IleAla: 6.59 ± 0.122
1.226IleCys: 1.226 ± 0.054
4.738IleAsp: 4.738 ± 0.109
5.657IleGlu: 5.657 ± 0.104
5.283IlePhe: 5.283 ± 0.131
4.795IleGly: 4.795 ± 0.109
1.358IleHis: 1.358 ± 0.055
6.826IleIle: 6.826 ± 0.13
7.832IleLys: 7.832 ± 0.139
10.015IleLeu: 10.015 ± 0.154
1.606IleMet: 1.606 ± 0.057
4.952IleAsn: 4.952 ± 0.106
2.653IlePro: 2.653 ± 0.074
2.451IleGln: 2.451 ± 0.072
2.283IleArg: 2.283 ± 0.083
6.326IleSer: 6.326 ± 0.12
3.728IleThr: 3.728 ± 0.09
4.612IleVal: 4.612 ± 0.09
0.526IleTrp: 0.526 ± 0.034
3.277IleTyr: 3.277 ± 0.089
0.0IleXaa: 0.0 ± 0.0
Lys
6.618LysAla: 6.618 ± 0.113
0.722LysCys: 0.722 ± 0.038
6.706LysAsp: 6.706 ± 0.127
9.407LysGlu: 9.407 ± 0.177
4.364LysPhe: 4.364 ± 0.096
4.411LysGly: 4.411 ± 0.105
1.453LysHis: 1.453 ± 0.066
9.517LysIle: 9.517 ± 0.161
8.454LysLys: 8.454 ± 0.15
8.139LysLeu: 8.139 ± 0.143
2.287LysMet: 2.287 ± 0.073
8.196LysAsn: 8.196 ± 0.149
2.142LysPro: 2.142 ± 0.074
3.075LysGln: 3.075 ± 0.082
2.685LysArg: 2.685 ± 0.076
4.913LysSer: 4.913 ± 0.103
4.368LysThr: 4.368 ± 0.104
4.267LysVal: 4.267 ± 0.096
0.494LysTrp: 0.494 ± 0.03
2.854LysTyr: 2.854 ± 0.086
0.0LysXaa: 0.0 ± 0.0
Leu
7.95LeuAla: 7.95 ± 0.141
1.62LeuCys: 1.62 ± 0.061
6.061LeuAsp: 6.061 ± 0.137
8.498LeuGlu: 8.498 ± 0.163
5.571LeuPhe: 5.571 ± 0.14
6.578LeuGly: 6.578 ± 0.118
1.618LeuHis: 1.618 ± 0.055
8.023LeuIle: 8.023 ± 0.157
11.442LeuLys: 11.442 ± 0.188
9.743LeuLeu: 9.743 ± 0.196
2.293LeuMet: 2.293 ± 0.07
7.427LeuAsn: 7.427 ± 0.142
3.173LeuPro: 3.173 ± 0.073
3.144LeuGln: 3.144 ± 0.089
3.447LeuArg: 3.447 ± 0.082
8.409LeuSer: 8.409 ± 0.149
3.726LeuThr: 3.726 ± 0.081
5.167LeuVal: 5.167 ± 0.105
0.707LeuTrp: 0.707 ± 0.039
3.325LeuTyr: 3.325 ± 0.102
0.0LeuXaa: 0.0 ± 0.0
Met
1.632MetAla: 1.632 ± 0.066
0.226MetCys: 0.226 ± 0.02
1.193MetAsp: 1.193 ± 0.051
1.085MetGlu: 1.085 ± 0.048
0.949MetPhe: 0.949 ± 0.047
1.478MetGly: 1.478 ± 0.06
0.374MetHis: 0.374 ± 0.027
1.984MetIle: 1.984 ± 0.065
2.136MetLys: 2.136 ± 0.062
2.484MetLeu: 2.484 ± 0.076
0.626MetMet: 0.626 ± 0.042
1.157MetAsn: 1.157 ± 0.055
0.913MetPro: 0.913 ± 0.044
1.411MetGln: 1.411 ± 0.056
0.756MetArg: 0.756 ± 0.041
1.457MetSer: 1.457 ± 0.054
0.726MetThr: 0.726 ± 0.039
1.128MetVal: 1.128 ± 0.046
0.118MetTrp: 0.118 ± 0.016
0.508MetTyr: 0.508 ± 0.027
0.0MetXaa: 0.0 ± 0.0
Asn
4.535AsnAla: 4.535 ± 0.109
0.492AsnCys: 0.492 ± 0.033
3.206AsnAsp: 3.206 ± 0.083
4.803AsnGlu: 4.803 ± 0.102
4.055AsnPhe: 4.055 ± 0.096
2.972AsnGly: 2.972 ± 0.098
1.065AsnHis: 1.065 ± 0.045
5.75AsnIle: 5.75 ± 0.113
4.732AsnLys: 4.732 ± 0.111
8.346AsnLeu: 8.346 ± 0.15
1.053AsnMet: 1.053 ± 0.041
3.431AsnAsn: 3.431 ± 0.133
2.346AsnPro: 2.346 ± 0.065
2.104AsnGln: 2.104 ± 0.068
1.411AsnArg: 1.411 ± 0.052
3.925AsnSer: 3.925 ± 0.106
3.138AsnThr: 3.138 ± 0.114
2.762AsnVal: 2.762 ± 0.079
0.299AsnTrp: 0.299 ± 0.026
2.555AsnTyr: 2.555 ± 0.079
0.0AsnXaa: 0.0 ± 0.0
Pro
1.437ProAla: 1.437 ± 0.063
0.329ProCys: 0.329 ± 0.028
1.232ProAsp: 1.232 ± 0.047
1.447ProGlu: 1.447 ± 0.059
1.648ProPhe: 1.648 ± 0.057
1.0ProGly: 1.0 ± 0.052
0.528ProHis: 0.528 ± 0.036
2.13ProIle: 2.13 ± 0.07
2.854ProLys: 2.854 ± 0.085
3.041ProLeu: 3.041 ± 0.081
0.598ProMet: 0.598 ± 0.034
1.854ProAsn: 1.854 ± 0.061
0.644ProPro: 0.644 ± 0.038
0.945ProGln: 0.945 ± 0.048
0.831ProArg: 0.831 ± 0.045
1.984ProSer: 1.984 ± 0.066
1.276ProThr: 1.276 ± 0.059
1.474ProVal: 1.474 ± 0.057
0.238ProTrp: 0.238 ± 0.021
1.276ProTyr: 1.276 ± 0.054
0.0ProXaa: 0.0 ± 0.0
Gln
2.073GlnAla: 2.073 ± 0.07
0.226GlnCys: 0.226 ± 0.02
1.805GlnAsp: 1.805 ± 0.062
2.457GlnGlu: 2.457 ± 0.073
1.258GlnPhe: 1.258 ± 0.043
1.884GlnGly: 1.884 ± 0.063
0.352GlnHis: 0.352 ± 0.026
3.214GlnIle: 3.214 ± 0.08
3.75GlnLys: 3.75 ± 0.089
1.754GlnLeu: 1.754 ± 0.053
0.787GlnMet: 0.787 ± 0.04
3.429GlnAsn: 3.429 ± 0.091
0.478GlnPro: 0.478 ± 0.034
0.679GlnGln: 0.679 ± 0.041
1.016GlnArg: 1.016 ± 0.044
2.279GlnSer: 2.279 ± 0.07
1.522GlnThr: 1.522 ± 0.054
1.439GlnVal: 1.439 ± 0.051
0.161GlnTrp: 0.161 ± 0.018
0.726GlnTyr: 0.726 ± 0.042
0.0GlnXaa: 0.0 ± 0.0
Arg
2.336ArgAla: 2.336 ± 0.069
0.291ArgCys: 0.291 ± 0.025
1.415ArgAsp: 1.415 ± 0.06
2.112ArgGlu: 2.112 ± 0.065
1.923ArgPhe: 1.923 ± 0.06
1.535ArgGly: 1.535 ± 0.06
0.5ArgHis: 0.5 ± 0.037
2.703ArgIle: 2.703 ± 0.077
2.583ArgLys: 2.583 ± 0.073
3.104ArgLeu: 3.104 ± 0.081
0.803ArgMet: 0.803 ± 0.046
1.549ArgAsn: 1.549 ± 0.06
0.754ArgPro: 0.754 ± 0.04
0.937ArgGln: 0.937 ± 0.044
1.116ArgArg: 1.116 ± 0.055
1.661ArgSer: 1.661 ± 0.065
1.226ArgThr: 1.226 ± 0.056
1.976ArgVal: 1.976 ± 0.067
0.161ArgTrp: 0.161 ± 0.016
1.246ArgTyr: 1.246 ± 0.056
0.0ArgXaa: 0.0 ± 0.0
Ser
4.077SerAla: 4.077 ± 0.09
0.789SerCys: 0.789 ± 0.035
3.187SerAsp: 3.187 ± 0.073
3.647SerGlu: 3.647 ± 0.087
4.216SerPhe: 4.216 ± 0.121
4.204SerGly: 4.204 ± 0.127
1.11SerHis: 1.11 ± 0.053
5.159SerIle: 5.159 ± 0.118
6.132SerLys: 6.132 ± 0.127
7.415SerLeu: 7.415 ± 0.131
1.449SerMet: 1.449 ± 0.058
3.407SerAsn: 3.407 ± 0.086
1.606SerPro: 1.606 ± 0.057
2.023SerGln: 2.023 ± 0.074
1.903SerArg: 1.903 ± 0.063
4.417SerSer: 4.417 ± 0.111
2.736SerThr: 2.736 ± 0.077
3.862SerVal: 3.862 ± 0.091
0.437SerTrp: 0.437 ± 0.032
2.634SerTyr: 2.634 ± 0.074
0.0SerXaa: 0.0 ± 0.0
Thr
2.492ThrAla: 2.492 ± 0.079
0.502ThrCys: 0.502 ± 0.032
1.569ThrAsp: 1.569 ± 0.074
1.525ThrGlu: 1.525 ± 0.055
2.088ThrPhe: 2.088 ± 0.06
2.407ThrGly: 2.407 ± 0.075
1.083ThrHis: 1.083 ± 0.052
3.236ThrIle: 3.236 ± 0.098
3.59ThrLys: 3.59 ± 0.087
5.474ThrLeu: 5.474 ± 0.103
0.951ThrMet: 0.951 ± 0.047
2.262ThrAsn: 2.262 ± 0.079
2.018ThrPro: 2.018 ± 0.062
1.988ThrGln: 1.988 ± 0.067
1.346ThrArg: 1.346 ± 0.048
2.848ThrSer: 2.848 ± 0.076
1.907ThrThr: 1.907 ± 0.062
1.464ThrVal: 1.464 ± 0.064
0.327ThrTrp: 0.327 ± 0.025
1.545ThrTyr: 1.545 ± 0.06
0.0ThrXaa: 0.0 ± 0.0
Val
3.775ValAla: 3.775 ± 0.105
0.801ValCys: 0.801 ± 0.042
2.895ValAsp: 2.895 ± 0.086
3.212ValGlu: 3.212 ± 0.087
3.246ValPhe: 3.246 ± 0.084
3.35ValGly: 3.35 ± 0.088
0.772ValHis: 0.772 ± 0.042
4.399ValIle: 4.399 ± 0.093
4.614ValLys: 4.614 ± 0.1
6.029ValLeu: 6.029 ± 0.115
1.268ValMet: 1.268 ± 0.048
2.799ValAsn: 2.799 ± 0.083
1.344ValPro: 1.344 ± 0.054
1.411ValGln: 1.411 ± 0.058
1.709ValArg: 1.709 ± 0.069
3.565ValSer: 3.565 ± 0.084
1.484ValThr: 1.484 ± 0.056
3.714ValVal: 3.714 ± 0.102
0.325ValTrp: 0.325 ± 0.024
1.838ValTyr: 1.838 ± 0.062
0.0ValXaa: 0.0 ± 0.0
Trp
0.478TrpAla: 0.478 ± 0.035
0.096TrpCys: 0.096 ± 0.014
0.38TrpAsp: 0.38 ± 0.028
0.313TrpGlu: 0.313 ± 0.027
0.335TrpPhe: 0.335 ± 0.03
0.494TrpGly: 0.494 ± 0.037
0.165TrpHis: 0.165 ± 0.019
0.571TrpIle: 0.571 ± 0.037
0.415TrpLys: 0.415 ± 0.031
0.809TrpLeu: 0.809 ± 0.044
0.193TrpMet: 0.193 ± 0.018
0.299TrpAsn: 0.299 ± 0.028
0.11TrpPro: 0.11 ± 0.016
0.354TrpGln: 0.354 ± 0.028
0.215TrpArg: 0.215 ± 0.023
0.289TrpSer: 0.289 ± 0.023
0.228TrpThr: 0.228 ± 0.023
0.386TrpVal: 0.386 ± 0.03
0.091TrpTrp: 0.091 ± 0.013
0.26TrpTyr: 0.26 ± 0.022
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.423TyrAla: 2.423 ± 0.074
0.368TyrCys: 0.368 ± 0.026
2.209TyrAsp: 2.209 ± 0.073
3.289TyrGlu: 3.289 ± 0.085
2.529TyrPhe: 2.529 ± 0.074
2.11TyrGly: 2.11 ± 0.066
0.74TyrHis: 0.74 ± 0.045
2.616TyrIle: 2.616 ± 0.077
3.519TyrLys: 3.519 ± 0.089
3.73TyrLeu: 3.73 ± 0.089
0.726TyrMet: 0.726 ± 0.035
1.935TyrAsn: 1.935 ± 0.071
1.23TyrPro: 1.23 ± 0.043
1.303TyrGln: 1.303 ± 0.051
1.102TyrArg: 1.102 ± 0.045
2.086TyrSer: 2.086 ± 0.069
1.687TyrThr: 1.687 ± 0.06
1.476TyrVal: 1.476 ± 0.054
0.226TyrTrp: 0.226 ± 0.021
1.455TyrTyr: 1.455 ± 0.069
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 1624 proteins (508032 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