Amino acid dipepetide frequency for Serratia symbiotica

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
9.915AlaAla: 9.915 ± 0.151
1.119AlaCys: 1.119 ± 0.038
4.964AlaAsp: 4.964 ± 0.092
5.907AlaGlu: 5.907 ± 0.103
3.247AlaPhe: 3.247 ± 0.076
7.287AlaGly: 7.287 ± 0.104
1.879AlaHis: 1.879 ± 0.054
5.436AlaIle: 5.436 ± 0.084
3.902AlaLys: 3.902 ± 0.077
11.849AlaLeu: 11.849 ± 0.173
2.77AlaMet: 2.77 ± 0.055
3.102AlaAsn: 3.102 ± 0.069
3.385AlaPro: 3.385 ± 0.074
4.713AlaGln: 4.713 ± 0.096
5.482AlaArg: 5.482 ± 0.108
5.385AlaSer: 5.385 ± 0.086
4.66AlaThr: 4.66 ± 0.079
6.562AlaVal: 6.562 ± 0.096
1.332AlaTrp: 1.332 ± 0.046
2.301AlaTyr: 2.301 ± 0.054
0.0AlaXaa: 0.0 ± 0.0
Cys
1.018CysAla: 1.018 ± 0.039
0.196CysCys: 0.196 ± 0.016
0.645CysAsp: 0.645 ± 0.026
0.606CysGlu: 0.606 ± 0.03
0.466CysPhe: 0.466 ± 0.023
1.088CysGly: 1.088 ± 0.039
0.352CysHis: 0.352 ± 0.019
0.616CysIle: 0.616 ± 0.026
0.388CysLys: 0.388 ± 0.023
1.114CysLeu: 1.114 ± 0.04
0.249CysMet: 0.249 ± 0.019
0.36CysAsn: 0.36 ± 0.017
0.456CysPro: 0.456 ± 0.025
0.553CysGln: 0.553 ± 0.027
0.683CysArg: 0.683 ± 0.029
0.694CysSer: 0.694 ± 0.029
0.516CysThr: 0.516 ± 0.025
0.741CysVal: 0.741 ± 0.032
0.202CysTrp: 0.202 ± 0.016
0.355CysTyr: 0.355 ± 0.023
0.0CysXaa: 0.0 ± 0.0
Asp
5.009AspAla: 5.009 ± 0.084
0.573AspCys: 0.573 ± 0.029
2.854AspAsp: 2.854 ± 0.062
3.357AspGlu: 3.357 ± 0.064
2.055AspPhe: 2.055 ± 0.048
3.766AspGly: 3.766 ± 0.07
1.055AspHis: 1.055 ± 0.034
3.526AspIle: 3.526 ± 0.063
2.477AspLys: 2.477 ± 0.056
4.893AspLeu: 4.893 ± 0.085
1.297AspMet: 1.297 ± 0.04
2.315AspAsn: 2.315 ± 0.062
2.102AspPro: 2.102 ± 0.054
1.805AspGln: 1.805 ± 0.047
2.842AspArg: 2.842 ± 0.06
2.987AspSer: 2.987 ± 0.065
2.655AspThr: 2.655 ± 0.064
3.749AspVal: 3.749 ± 0.062
0.89AspTrp: 0.89 ± 0.027
1.862AspTyr: 1.862 ± 0.05
0.0AspXaa: 0.0 ± 0.0
Glu
5.079GluAla: 5.079 ± 0.083
0.514GluCys: 0.514 ± 0.026
2.405GluAsp: 2.405 ± 0.062
2.946GluGlu: 2.946 ± 0.076
1.745GluPhe: 1.745 ± 0.044
3.19GluGly: 3.19 ± 0.059
1.392GluHis: 1.392 ± 0.039
3.313GluIle: 3.313 ± 0.062
3.121GluLys: 3.121 ± 0.064
6.097GluLeu: 6.097 ± 0.099
1.797GluMet: 1.797 ± 0.048
2.391GluAsn: 2.391 ± 0.052
2.024GluPro: 2.024 ± 0.06
3.675GluGln: 3.675 ± 0.082
3.951GluArg: 3.951 ± 0.076
2.781GluSer: 2.781 ± 0.055
2.793GluThr: 2.793 ± 0.064
3.814GluVal: 3.814 ± 0.077
0.736GluTrp: 0.736 ± 0.03
1.453GluTyr: 1.453 ± 0.044
0.0GluXaa: 0.0 ± 0.0
Phe
3.194PheAla: 3.194 ± 0.058
0.514PheCys: 0.514 ± 0.024
2.281PheAsp: 2.281 ± 0.053
1.746PheGlu: 1.746 ± 0.054
1.482PhePhe: 1.482 ± 0.054
2.88PheGly: 2.88 ± 0.067
0.769PheHis: 0.769 ± 0.033
2.442PheIle: 2.442 ± 0.063
1.376PheLys: 1.376 ± 0.041
3.035PheLeu: 3.035 ± 0.073
0.899PheMet: 0.899 ± 0.028
1.754PheAsn: 1.754 ± 0.046
1.429PhePro: 1.429 ± 0.043
1.119PheGln: 1.119 ± 0.035
1.819PheArg: 1.819 ± 0.042
3.22PheSer: 3.22 ± 0.064
2.155PheThr: 2.155 ± 0.052
2.234PheVal: 2.234 ± 0.056
0.495PheTrp: 0.495 ± 0.024
1.203PheTyr: 1.203 ± 0.042
0.0PheXaa: 0.0 ± 0.0
Gly
5.835GlyAla: 5.835 ± 0.082
1.0GlyCys: 1.0 ± 0.036
3.772GlyAsp: 3.772 ± 0.068
4.521GlyGlu: 4.521 ± 0.084
2.858GlyPhe: 2.858 ± 0.053
5.265GlyGly: 5.265 ± 0.101
1.721GlyHis: 1.721 ± 0.042
4.803GlyIle: 4.803 ± 0.087
4.068GlyLys: 4.068 ± 0.082
7.007GlyLeu: 7.007 ± 0.105
2.213GlyMet: 2.213 ± 0.059
2.886GlyAsn: 2.886 ± 0.073
1.709GlyPro: 1.709 ± 0.049
2.992GlyGln: 2.992 ± 0.069
4.03GlyArg: 4.03 ± 0.066
4.507GlySer: 4.507 ± 0.09
3.691GlyThr: 3.691 ± 0.074
5.622GlyVal: 5.622 ± 0.08
1.202GlyTrp: 1.202 ± 0.038
2.651GlyTyr: 2.651 ± 0.055
0.0GlyXaa: 0.0 ± 0.0
His
2.025HisAla: 2.025 ± 0.045
0.422HisCys: 0.422 ± 0.023
1.128HisAsp: 1.128 ± 0.037
1.057HisGlu: 1.057 ± 0.038
0.993HisPhe: 0.993 ± 0.034
1.79HisGly: 1.79 ± 0.05
0.775HisHis: 0.775 ± 0.033
1.342HisIle: 1.342 ± 0.043
0.798HisLys: 0.798 ± 0.032
2.512HisLeu: 2.512 ± 0.061
0.565HisMet: 0.565 ± 0.027
0.912HisAsn: 0.912 ± 0.033
1.349HisPro: 1.349 ± 0.043
1.389HisGln: 1.389 ± 0.045
1.493HisArg: 1.493 ± 0.044
1.394HisSer: 1.394 ± 0.046
1.114HisThr: 1.114 ± 0.037
1.228HisVal: 1.228 ± 0.036
0.456HisTrp: 0.456 ± 0.026
0.934HisTyr: 0.934 ± 0.031
0.0HisXaa: 0.0 ± 0.0
Ile
6.108IleAla: 6.108 ± 0.078
0.709IleCys: 0.709 ± 0.03
3.616IleAsp: 3.616 ± 0.065
3.515IleGlu: 3.515 ± 0.075
1.921IlePhe: 1.921 ± 0.056
4.645IleGly: 4.645 ± 0.099
1.144IleHis: 1.144 ± 0.041
3.212IleIle: 3.212 ± 0.079
2.526IleLys: 2.526 ± 0.061
4.804IleLeu: 4.804 ± 0.081
1.188IleMet: 1.188 ± 0.041
2.806IleAsn: 2.806 ± 0.061
2.562IlePro: 2.562 ± 0.063
1.924IleGln: 1.924 ± 0.049
3.106IleArg: 3.106 ± 0.056
4.094IleSer: 4.094 ± 0.083
3.657IleThr: 3.657 ± 0.065
3.574IleVal: 3.574 ± 0.077
0.653IleTrp: 0.653 ± 0.028
1.513IleTyr: 1.513 ± 0.046
0.0IleXaa: 0.0 ± 0.0
Lys
4.048LysAla: 4.048 ± 0.087
0.288LysCys: 0.288 ± 0.02
2.101LysAsp: 2.101 ± 0.056
2.333LysGlu: 2.333 ± 0.068
1.156LysPhe: 1.156 ± 0.044
2.981LysGly: 2.981 ± 0.062
0.943LysHis: 0.943 ± 0.036
2.519LysIle: 2.519 ± 0.067
2.487LysLys: 2.487 ± 0.07
4.589LysLeu: 4.589 ± 0.075
1.224LysMet: 1.224 ± 0.039
1.875LysAsn: 1.875 ± 0.052
2.156LysPro: 2.156 ± 0.056
2.096LysGln: 2.096 ± 0.056
2.829LysArg: 2.829 ± 0.069
2.529LysSer: 2.529 ± 0.061
2.521LysThr: 2.521 ± 0.059
3.183LysVal: 3.183 ± 0.073
0.449LysTrp: 0.449 ± 0.022
1.174LysTyr: 1.174 ± 0.039
0.0LysXaa: 0.0 ± 0.0
Leu
11.544LeuAla: 11.544 ± 0.143
1.346LeuCys: 1.346 ± 0.043
5.675LeuAsp: 5.675 ± 0.086
5.456LeuGlu: 5.456 ± 0.091
3.984LeuPhe: 3.984 ± 0.084
7.226LeuGly: 7.226 ± 0.109
2.516LeuHis: 2.516 ± 0.06
5.77LeuIle: 5.77 ± 0.11
4.641LeuLys: 4.641 ± 0.075
12.456LeuLeu: 12.456 ± 0.187
3.028LeuMet: 3.028 ± 0.066
4.295LeuAsn: 4.295 ± 0.077
5.991LeuPro: 5.991 ± 0.109
4.592LeuGln: 4.592 ± 0.096
6.754LeuArg: 6.754 ± 0.098
7.863LeuSer: 7.863 ± 0.116
6.271LeuThr: 6.271 ± 0.116
7.195LeuVal: 7.195 ± 0.104
1.295LeuTrp: 1.295 ± 0.046
2.76LeuTyr: 2.76 ± 0.057
0.0LeuXaa: 0.0 ± 0.0
Met
2.994MetAla: 2.994 ± 0.061
0.222MetCys: 0.222 ± 0.014
1.095MetAsp: 1.095 ± 0.037
1.195MetGlu: 1.195 ± 0.041
0.824MetPhe: 0.824 ± 0.033
1.641MetGly: 1.641 ± 0.044
0.502MetHis: 0.502 ± 0.024
1.465MetIle: 1.465 ± 0.043
1.375MetLys: 1.375 ± 0.044
3.22MetLeu: 3.22 ± 0.069
0.802MetMet: 0.802 ± 0.031
1.022MetAsn: 1.022 ± 0.035
1.34MetPro: 1.34 ± 0.039
1.272MetGln: 1.272 ± 0.037
1.498MetArg: 1.498 ± 0.041
1.771MetSer: 1.771 ± 0.05
1.588MetThr: 1.588 ± 0.047
1.939MetVal: 1.939 ± 0.041
0.207MetTrp: 0.207 ± 0.016
0.476MetTyr: 0.476 ± 0.026
0.0MetXaa: 0.0 ± 0.0
Asn
3.569AsnAla: 3.569 ± 0.069
0.343AsnCys: 0.343 ± 0.023
2.14AsnAsp: 2.14 ± 0.047
1.97AsnGlu: 1.97 ± 0.048
1.242AsnPhe: 1.242 ± 0.037
3.112AsnGly: 3.112 ± 0.075
0.928AsnHis: 0.928 ± 0.033
2.368AsnIle: 2.368 ± 0.061
1.713AsnLys: 1.713 ± 0.05
3.726AsnLeu: 3.726 ± 0.079
0.955AsnMet: 0.955 ± 0.034
1.689AsnAsn: 1.689 ± 0.062
2.027AsnPro: 2.027 ± 0.047
1.787AsnGln: 1.787 ± 0.054
2.145AsnArg: 2.145 ± 0.049
2.275AsnSer: 2.275 ± 0.061
2.089AsnThr: 2.089 ± 0.059
2.464AsnVal: 2.464 ± 0.055
0.548AsnTrp: 0.548 ± 0.027
1.226AsnTyr: 1.226 ± 0.043
0.0AsnXaa: 0.0 ± 0.0
Pro
4.282ProAla: 4.282 ± 0.085
0.4ProCys: 0.4 ± 0.021
2.62ProAsp: 2.62 ± 0.074
3.113ProGlu: 3.113 ± 0.058
1.725ProPhe: 1.725 ± 0.042
3.226ProGly: 3.226 ± 0.061
1.071ProHis: 1.071 ± 0.035
2.063ProIle: 2.063 ± 0.045
1.648ProLys: 1.648 ± 0.039
5.339ProLeu: 5.339 ± 0.088
1.015ProMet: 1.015 ± 0.035
1.339ProAsn: 1.339 ± 0.044
1.909ProPro: 1.909 ± 0.061
2.476ProGln: 2.476 ± 0.065
1.912ProArg: 1.912 ± 0.044
2.275ProSer: 2.275 ± 0.054
2.15ProThr: 2.15 ± 0.054
3.494ProVal: 3.494 ± 0.068
0.653ProTrp: 0.653 ± 0.031
1.305ProTyr: 1.305 ± 0.039
0.0ProXaa: 0.0 ± 0.0
Gln
5.03GlnAla: 5.03 ± 0.107
0.475GlnCys: 0.475 ± 0.023
2.091GlnAsp: 2.091 ± 0.053
2.215GlnGlu: 2.215 ± 0.058
1.578GlnPhe: 1.578 ± 0.042
3.403GlnGly: 3.403 ± 0.079
1.456GlnHis: 1.456 ± 0.046
2.345GlnIle: 2.345 ± 0.056
1.716GlnLys: 1.716 ± 0.041
5.537GlnLeu: 5.537 ± 0.12
1.236GlnMet: 1.236 ± 0.041
1.427GlnAsn: 1.427 ± 0.038
2.452GlnPro: 2.452 ± 0.071
4.161GlnGln: 4.161 ± 0.138
3.674GlnArg: 3.674 ± 0.089
2.375GlnSer: 2.375 ± 0.052
2.159GlnThr: 2.159 ± 0.052
3.509GlnVal: 3.509 ± 0.077
0.77GlnTrp: 0.77 ± 0.03
1.197GlnTyr: 1.197 ± 0.043
0.0GlnXaa: 0.0 ± 0.0
Arg
4.79ArgAla: 4.79 ± 0.076
0.692ArgCys: 0.692 ± 0.033
3.108ArgAsp: 3.108 ± 0.066
3.754ArgGlu: 3.754 ± 0.079
2.485ArgPhe: 2.485 ± 0.051
3.43ArgGly: 3.43 ± 0.064
1.782ArgHis: 1.782 ± 0.054
3.509ArgIle: 3.509 ± 0.079
2.542ArgLys: 2.542 ± 0.061
7.128ArgLeu: 7.128 ± 0.117
1.514ArgMet: 1.514 ± 0.047
2.109ArgAsn: 2.109 ± 0.055
2.306ArgPro: 2.306 ± 0.051
3.61ArgGln: 3.61 ± 0.078
3.785ArgArg: 3.785 ± 0.097
3.112ArgSer: 3.112 ± 0.069
2.702ArgThr: 2.702 ± 0.057
4.047ArgVal: 4.047 ± 0.074
1.034ArgTrp: 1.034 ± 0.035
2.208ArgTyr: 2.208 ± 0.053
0.0ArgXaa: 0.0 ± 0.0
Ser
5.775SerAla: 5.775 ± 0.085
0.65SerCys: 0.65 ± 0.031
3.186SerAsp: 3.186 ± 0.063
3.263SerGlu: 3.263 ± 0.055
2.26SerPhe: 2.26 ± 0.054
5.437SerGly: 5.437 ± 0.074
1.563SerHis: 1.563 ± 0.041
3.309SerIle: 3.309 ± 0.065
2.442SerLys: 2.442 ± 0.057
6.852SerLeu: 6.852 ± 0.104
1.513SerMet: 1.513 ± 0.042
2.212SerAsn: 2.212 ± 0.051
2.567SerPro: 2.567 ± 0.053
2.768SerGln: 2.768 ± 0.067
3.458SerArg: 3.458 ± 0.067
3.785SerSer: 3.785 ± 0.079
3.024SerThr: 3.024 ± 0.063
4.36SerVal: 4.36 ± 0.071
0.831SerTrp: 0.831 ± 0.027
1.807SerTyr: 1.807 ± 0.049
0.0SerXaa: 0.0 ± 0.0
Thr
4.942ThrAla: 4.942 ± 0.09
0.462ThrCys: 0.462 ± 0.022
2.706ThrAsp: 2.706 ± 0.065
2.6ThrGlu: 2.6 ± 0.056
1.897ThrPhe: 1.897 ± 0.051
4.324ThrGly: 4.324 ± 0.085
1.275ThrHis: 1.275 ± 0.035
2.746ThrIle: 2.746 ± 0.057
1.678ThrLys: 1.678 ± 0.055
7.472ThrLeu: 7.472 ± 0.11
1.041ThrMet: 1.041 ± 0.038
1.515ThrAsn: 1.515 ± 0.043
3.121ThrPro: 3.121 ± 0.07
2.261ThrGln: 2.261 ± 0.053
3.084ThrArg: 3.084 ± 0.056
2.903ThrSer: 2.903 ± 0.057
2.902ThrThr: 2.902 ± 0.068
3.693ThrVal: 3.693 ± 0.066
0.645ThrTrp: 0.645 ± 0.032
1.271ThrTyr: 1.271 ± 0.041
0.0ThrXaa: 0.0 ± 0.0
Val
6.734ValAla: 6.734 ± 0.106
0.737ValCys: 0.737 ± 0.034
3.636ValAsp: 3.636 ± 0.065
3.937ValGlu: 3.937 ± 0.066
2.42ValPhe: 2.42 ± 0.061
4.818ValGly: 4.818 ± 0.084
1.23ValHis: 1.23 ± 0.039
4.37ValIle: 4.37 ± 0.089
3.219ValLys: 3.219 ± 0.071
7.384ValLeu: 7.384 ± 0.117
2.134ValMet: 2.134 ± 0.058
2.734ValAsn: 2.734 ± 0.062
3.068ValPro: 3.068 ± 0.068
2.621ValGln: 2.621 ± 0.06
3.836ValArg: 3.836 ± 0.07
4.525ValSer: 4.525 ± 0.064
4.026ValThr: 4.026 ± 0.063
5.268ValVal: 5.268 ± 0.094
0.818ValTrp: 0.818 ± 0.032
1.75ValTyr: 1.75 ± 0.045
0.0ValXaa: 0.0 ± 0.0
Trp
0.946TrpAla: 0.946 ± 0.036
0.218TrpCys: 0.218 ± 0.015
0.544TrpAsp: 0.544 ± 0.024
0.549TrpGlu: 0.549 ± 0.025
0.566TrpPhe: 0.566 ± 0.023
0.769TrpGly: 0.769 ± 0.031
0.433TrpHis: 0.433 ± 0.021
0.649TrpIle: 0.649 ± 0.027
0.457TrpLys: 0.457 ± 0.025
2.324TrpLeu: 2.324 ± 0.066
0.349TrpMet: 0.349 ± 0.018
0.507TrpAsn: 0.507 ± 0.026
0.636TrpPro: 0.636 ± 0.03
1.149TrpGln: 1.149 ± 0.05
1.1TrpArg: 1.1 ± 0.038
0.743TrpSer: 0.743 ± 0.035
0.412TrpThr: 0.412 ± 0.022
0.95TrpVal: 0.95 ± 0.032
0.256TrpTrp: 0.256 ± 0.018
0.357TrpTyr: 0.357 ± 0.02
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.359TyrAla: 2.359 ± 0.052
0.42TyrCys: 0.42 ± 0.024
1.501TyrAsp: 1.501 ± 0.046
1.178TyrGlu: 1.178 ± 0.045
1.144TyrPhe: 1.144 ± 0.042
2.073TyrGly: 2.073 ± 0.041
0.891TyrHis: 0.891 ± 0.034
1.471TyrIle: 1.471 ± 0.04
0.907TyrLys: 0.907 ± 0.038
3.323TyrLeu: 3.323 ± 0.059
0.656TyrMet: 0.656 ± 0.033
1.066TyrAsn: 1.066 ± 0.04
1.427TyrPro: 1.427 ± 0.049
1.843TyrGln: 1.843 ± 0.054
2.165TyrArg: 2.165 ± 0.056
1.844TyrSer: 1.844 ± 0.045
1.454TyrThr: 1.454 ± 0.049
1.64TyrVal: 1.64 ± 0.048
0.442TyrTrp: 0.442 ± 0.022
0.91TyrTyr: 0.91 ± 0.037
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 2860 proteins (861842 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