Amino acid dipepetide frequency for bacterium HR28

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
14.81AlaAla: 14.81 ± 0.175
1.011AlaCys: 1.011 ± 0.041
4.651AlaAsp: 4.651 ± 0.077
7.772AlaGlu: 7.772 ± 0.11
3.721AlaPhe: 3.721 ± 0.067
8.777AlaGly: 8.777 ± 0.11
2.13AlaHis: 2.13 ± 0.048
5.767AlaIle: 5.767 ± 0.082
1.916AlaLys: 1.916 ± 0.054
14.696AlaLeu: 14.696 ± 0.163
2.232AlaMet: 2.232 ± 0.051
1.955AlaAsn: 1.955 ± 0.046
5.334AlaPro: 5.334 ± 0.085
4.177AlaGln: 4.177 ± 0.062
9.982AlaArg: 9.982 ± 0.134
5.191AlaSer: 5.191 ± 0.084
6.31AlaThr: 6.31 ± 0.093
10.171AlaVal: 10.171 ± 0.141
1.827AlaTrp: 1.827 ± 0.043
2.542AlaTyr: 2.542 ± 0.049
0.0AlaXaa: 0.0 ± 0.0
Cys
0.841CysAla: 0.841 ± 0.035
0.132CysCys: 0.132 ± 0.013
0.442CysAsp: 0.442 ± 0.02
0.441CysGlu: 0.441 ± 0.02
0.279CysPhe: 0.279 ± 0.019
0.953CysGly: 0.953 ± 0.033
0.238CysHis: 0.238 ± 0.017
0.293CysIle: 0.293 ± 0.021
0.105CysLys: 0.105 ± 0.011
0.753CysLeu: 0.753 ± 0.034
0.113CysMet: 0.113 ± 0.012
0.177CysAsn: 0.177 ± 0.015
0.609CysPro: 0.609 ± 0.028
0.284CysGln: 0.284 ± 0.018
0.731CysArg: 0.731 ± 0.031
0.455CysSer: 0.455 ± 0.025
0.455CysThr: 0.455 ± 0.022
0.551CysVal: 0.551 ± 0.026
0.15CysTrp: 0.15 ± 0.012
0.218CysTyr: 0.218 ± 0.019
0.0CysXaa: 0.0 ± 0.0
Asp
4.671AspAla: 4.671 ± 0.075
0.344AspCys: 0.344 ± 0.018
2.196AspAsp: 2.196 ± 0.056
3.534AspGlu: 3.534 ± 0.067
1.534AspPhe: 1.534 ± 0.042
4.062AspGly: 4.062 ± 0.068
0.952AspHis: 0.952 ± 0.035
1.989AspIle: 1.989 ± 0.056
0.633AspLys: 0.633 ± 0.031
5.418AspLeu: 5.418 ± 0.08
0.639AspMet: 0.639 ± 0.029
0.641AspAsn: 0.641 ± 0.03
4.156AspPro: 4.156 ± 0.077
1.462AspGln: 1.462 ± 0.037
4.185AspArg: 4.185 ± 0.071
1.571AspSer: 1.571 ± 0.038
1.987AspThr: 1.987 ± 0.045
3.973AspVal: 3.973 ± 0.065
0.861AspTrp: 0.861 ± 0.035
1.258AspTyr: 1.258 ± 0.042
0.0AspXaa: 0.0 ± 0.0
Glu
7.616GluAla: 7.616 ± 0.105
0.327GluCys: 0.327 ± 0.018
2.386GluAsp: 2.386 ± 0.047
4.968GluGlu: 4.968 ± 0.096
1.979GluPhe: 1.979 ± 0.049
4.166GluGly: 4.166 ± 0.077
1.661GluHis: 1.661 ± 0.041
3.064GluIle: 3.064 ± 0.07
1.18GluLys: 1.18 ± 0.041
9.425GluLeu: 9.425 ± 0.132
1.124GluMet: 1.124 ± 0.042
1.056GluAsn: 1.056 ± 0.03
3.804GluPro: 3.804 ± 0.063
3.293GluGln: 3.293 ± 0.063
8.594GluArg: 8.594 ± 0.118
2.383GluSer: 2.383 ± 0.051
3.325GluThr: 3.325 ± 0.055
4.984GluVal: 4.984 ± 0.078
0.956GluTrp: 0.956 ± 0.035
1.348GluTyr: 1.348 ± 0.041
0.0GluXaa: 0.0 ± 0.0
Phe
3.844PheAla: 3.844 ± 0.078
0.291PheCys: 0.291 ± 0.018
1.85PheAsp: 1.85 ± 0.045
1.81PheGlu: 1.81 ± 0.048
1.214PhePhe: 1.214 ± 0.042
3.204PheGly: 3.204 ± 0.066
0.622PheHis: 0.622 ± 0.026
1.197PheIle: 1.197 ± 0.04
0.444PheLys: 0.444 ± 0.024
3.789PheLeu: 3.789 ± 0.077
0.417PheMet: 0.417 ± 0.024
0.615PheAsn: 0.615 ± 0.029
1.987PhePro: 1.987 ± 0.051
1.025PheGln: 1.025 ± 0.036
2.574PheArg: 2.574 ± 0.048
1.521PheSer: 1.521 ± 0.042
1.809PheThr: 1.809 ± 0.044
2.938PheVal: 2.938 ± 0.057
0.691PheTrp: 0.691 ± 0.031
0.829PheTyr: 0.829 ± 0.033
0.0PheXaa: 0.0 ± 0.0
Gly
7.726GlyAla: 7.726 ± 0.109
0.787GlyCys: 0.787 ± 0.029
3.442GlyAsp: 3.442 ± 0.066
4.993GlyGlu: 4.993 ± 0.07
2.975GlyPhe: 2.975 ± 0.06
6.046GlyGly: 6.046 ± 0.118
1.851GlyHis: 1.851 ± 0.043
4.691GlyIle: 4.691 ± 0.077
1.949GlyLys: 1.949 ± 0.049
8.881GlyLeu: 8.881 ± 0.118
1.765GlyMet: 1.765 ± 0.045
1.633GlyAsn: 1.633 ± 0.051
3.726GlyPro: 3.726 ± 0.065
3.123GlyGln: 3.123 ± 0.062
6.715GlyArg: 6.715 ± 0.086
4.088GlySer: 4.088 ± 0.079
4.975GlyThr: 4.975 ± 0.075
6.489GlyVal: 6.489 ± 0.107
1.616GlyTrp: 1.616 ± 0.045
2.392GlyTyr: 2.392 ± 0.051
0.0GlyXaa: 0.0 ± 0.0
His
2.136HisAla: 2.136 ± 0.057
0.257HisCys: 0.257 ± 0.018
1.007HisAsp: 1.007 ± 0.034
1.257HisGlu: 1.257 ± 0.039
0.742HisPhe: 0.742 ± 0.03
1.956HisGly: 1.956 ± 0.041
0.557HisHis: 0.557 ± 0.026
0.778HisIle: 0.778 ± 0.022
0.268HisLys: 0.268 ± 0.017
2.283HisLeu: 2.283 ± 0.053
0.279HisMet: 0.279 ± 0.017
0.389HisAsn: 0.389 ± 0.018
1.833HisPro: 1.833 ± 0.046
0.729HisGln: 0.729 ± 0.028
1.78HisArg: 1.78 ± 0.047
0.832HisSer: 0.832 ± 0.035
0.972HisThr: 0.972 ± 0.034
1.674HisVal: 1.674 ± 0.045
0.421HisTrp: 0.421 ± 0.023
0.592HisTyr: 0.592 ± 0.027
0.0HisXaa: 0.0 ± 0.0
Ile
6.186IleAla: 6.186 ± 0.091
0.374IleCys: 0.374 ± 0.023
2.846IleAsp: 2.846 ± 0.059
3.47IleGlu: 3.47 ± 0.066
1.279IlePhe: 1.279 ± 0.047
4.193IleGly: 4.193 ± 0.075
0.829IleHis: 0.829 ± 0.033
1.724IleIle: 1.724 ± 0.046
0.66IleLys: 0.66 ± 0.035
4.586IleLeu: 4.586 ± 0.081
0.592IleMet: 0.592 ± 0.029
0.765IleAsn: 0.765 ± 0.033
2.945IlePro: 2.945 ± 0.064
1.365IleGln: 1.365 ± 0.039
3.623IleArg: 3.623 ± 0.066
1.889IleSer: 1.889 ± 0.049
2.391IleThr: 2.391 ± 0.057
4.89IleVal: 4.89 ± 0.077
0.609IleTrp: 0.609 ± 0.027
1.027IleTyr: 1.027 ± 0.033
0.0IleXaa: 0.0 ± 0.0
Lys
1.704LysAla: 1.704 ± 0.053
0.11LysCys: 0.11 ± 0.013
0.64LysAsp: 0.64 ± 0.032
1.091LysGlu: 1.091 ± 0.039
0.434LysPhe: 0.434 ± 0.026
1.168LysGly: 1.168 ± 0.038
0.355LysHis: 0.355 ± 0.021
0.827LysIle: 0.827 ± 0.033
0.427LysLys: 0.427 ± 0.028
1.871LysLeu: 1.871 ± 0.052
0.276LysMet: 0.276 ± 0.021
0.336LysAsn: 0.336 ± 0.021
1.048LysPro: 1.048 ± 0.035
0.653LysGln: 0.653 ± 0.028
1.595LysArg: 1.595 ± 0.047
0.677LysSer: 0.677 ± 0.029
1.002LysThr: 1.002 ± 0.04
1.328LysVal: 1.328 ± 0.044
0.239LysTrp: 0.239 ± 0.013
0.455LysTyr: 0.455 ± 0.024
0.0LysXaa: 0.0 ± 0.0
Leu
16.618LeuAla: 16.618 ± 0.201
0.862LeuCys: 0.862 ± 0.03
5.585LeuAsp: 5.585 ± 0.084
7.792LeuGlu: 7.792 ± 0.109
3.587LeuPhe: 3.587 ± 0.071
9.764LeuGly: 9.764 ± 0.128
2.169LeuHis: 2.169 ± 0.053
4.712LeuIle: 4.712 ± 0.081
1.595LeuLys: 1.595 ± 0.047
14.193LeuLeu: 14.193 ± 0.217
1.55LeuMet: 1.55 ± 0.041
1.732LeuAsn: 1.732 ± 0.041
7.109LeuPro: 7.109 ± 0.1
3.767LeuGln: 3.767 ± 0.061
10.419LeuArg: 10.419 ± 0.121
5.45LeuSer: 5.45 ± 0.082
6.368LeuThr: 6.368 ± 0.081
11.076LeuVal: 11.076 ± 0.127
1.794LeuTrp: 1.794 ± 0.049
2.401LeuTyr: 2.401 ± 0.05
0.0LeuXaa: 0.0 ± 0.0
Met
2.01MetAla: 2.01 ± 0.048
0.102MetCys: 0.102 ± 0.011
0.656MetAsp: 0.656 ± 0.027
0.913MetGlu: 0.913 ± 0.039
0.418MetPhe: 0.418 ± 0.023
1.188MetGly: 1.188 ± 0.041
0.317MetHis: 0.317 ± 0.023
0.736MetIle: 0.736 ± 0.034
0.33MetLys: 0.33 ± 0.02
1.926MetLeu: 1.926 ± 0.051
0.294MetMet: 0.294 ± 0.018
0.372MetAsn: 0.372 ± 0.022
1.051MetPro: 1.051 ± 0.03
0.599MetGln: 0.599 ± 0.024
1.49MetArg: 1.49 ± 0.034
0.961MetSer: 0.961 ± 0.032
1.258MetThr: 1.258 ± 0.038
1.403MetVal: 1.403 ± 0.039
0.16MetTrp: 0.16 ± 0.016
0.278MetTyr: 0.278 ± 0.018
0.0MetXaa: 0.0 ± 0.0
Asn
2.048AsnAla: 2.048 ± 0.051
0.169AsnCys: 0.169 ± 0.015
0.842AsnAsp: 0.842 ± 0.035
1.072AsnGlu: 1.072 ± 0.038
0.562AsnPhe: 0.562 ± 0.027
1.807AsnGly: 1.807 ± 0.047
0.375AsnHis: 0.375 ± 0.021
0.772AsnIle: 0.772 ± 0.032
0.261AsnLys: 0.261 ± 0.017
1.955AsnLeu: 1.955 ± 0.055
0.273AsnMet: 0.273 ± 0.017
0.382AsnAsn: 0.382 ± 0.026
1.582AsnPro: 1.582 ± 0.051
0.585AsnGln: 0.585 ± 0.027
1.485AsnArg: 1.485 ± 0.05
0.664AsnSer: 0.664 ± 0.031
0.924AsnThr: 0.924 ± 0.035
1.565AsnVal: 1.565 ± 0.043
0.34AsnTrp: 0.34 ± 0.02
0.432AsnTyr: 0.432 ± 0.022
0.0AsnXaa: 0.0 ± 0.0
Pro
6.235ProAla: 6.235 ± 0.099
0.404ProCys: 0.404 ± 0.023
3.827ProAsp: 3.827 ± 0.072
5.323ProGlu: 5.323 ± 0.075
2.001ProPhe: 2.001 ± 0.05
5.2ProGly: 5.2 ± 0.082
1.331ProHis: 1.331 ± 0.038
2.777ProIle: 2.777 ± 0.058
0.937ProLys: 0.937 ± 0.035
6.411ProLeu: 6.411 ± 0.083
0.942ProMet: 0.942 ± 0.033
1.392ProAsn: 1.392 ± 0.041
3.852ProPro: 3.852 ± 0.087
1.887ProGln: 1.887 ± 0.052
4.213ProArg: 4.213 ± 0.078
3.246ProSer: 3.246 ± 0.074
3.865ProThr: 3.865 ± 0.106
5.229ProVal: 5.229 ± 0.079
1.037ProTrp: 1.037 ± 0.038
1.453ProTyr: 1.453 ± 0.039
0.0ProXaa: 0.0 ± 0.0
Gln
4.301GlnAla: 4.301 ± 0.081
0.253GlnCys: 0.253 ± 0.017
1.205GlnAsp: 1.205 ± 0.034
2.366GlnGlu: 2.366 ± 0.058
0.947GlnPhe: 0.947 ± 0.032
2.198GlnGly: 2.198 ± 0.049
0.855GlnHis: 0.855 ± 0.027
1.573GlnIle: 1.573 ± 0.044
0.627GlnLys: 0.627 ± 0.028
4.715GlnLeu: 4.715 ± 0.09
0.545GlnMet: 0.545 ± 0.025
0.663GlnAsn: 0.663 ± 0.03
2.456GlnPro: 2.456 ± 0.057
1.731GlnGln: 1.731 ± 0.053
4.194GlnArg: 4.194 ± 0.074
1.368GlnSer: 1.368 ± 0.041
1.566GlnThr: 1.566 ± 0.042
2.83GlnVal: 2.83 ± 0.059
0.541GlnTrp: 0.541 ± 0.024
0.841GlnTyr: 0.841 ± 0.032
0.0GlnXaa: 0.0 ± 0.0
Arg
9.716ArgAla: 9.716 ± 0.12
0.818ArgCys: 0.818 ± 0.035
3.95ArgAsp: 3.95 ± 0.068
6.676ArgGlu: 6.676 ± 0.1
3.362ArgPhe: 3.362 ± 0.062
6.07ArgGly: 6.07 ± 0.083
1.895ArgHis: 1.895 ± 0.041
4.519ArgIle: 4.519 ± 0.066
1.463ArgLys: 1.463 ± 0.046
10.424ArgLeu: 10.424 ± 0.125
1.621ArgMet: 1.621 ± 0.041
1.551ArgAsn: 1.551 ± 0.04
4.934ArgPro: 4.934 ± 0.079
3.619ArgGln: 3.619 ± 0.072
8.625ArgArg: 8.625 ± 0.123
4.191ArgSer: 4.191 ± 0.073
4.388ArgThr: 4.388 ± 0.08
6.945ArgVal: 6.945 ± 0.093
1.925ArgTrp: 1.925 ± 0.053
2.617ArgTyr: 2.617 ± 0.057
0.0ArgXaa: 0.0 ± 0.0
Ser
4.6SerAla: 4.6 ± 0.085
0.459SerCys: 0.459 ± 0.025
2.224SerAsp: 2.224 ± 0.049
2.821SerGlu: 2.821 ± 0.059
1.649SerPhe: 1.649 ± 0.045
4.573SerGly: 4.573 ± 0.075
0.873SerHis: 0.873 ± 0.035
1.893SerIle: 1.893 ± 0.057
0.639SerLys: 0.639 ± 0.031
5.18SerLeu: 5.18 ± 0.088
0.973SerMet: 0.973 ± 0.03
0.807SerAsn: 0.807 ± 0.032
3.198SerPro: 3.198 ± 0.066
1.414SerGln: 1.414 ± 0.042
3.438SerArg: 3.438 ± 0.062
2.485SerSer: 2.485 ± 0.067
2.536SerThr: 2.536 ± 0.056
3.676SerVal: 3.676 ± 0.063
0.988SerTrp: 0.988 ± 0.033
0.987SerTyr: 0.987 ± 0.036
0.0SerXaa: 0.0 ± 0.0
Thr
5.995ThrAla: 5.995 ± 0.091
0.416ThrCys: 0.416 ± 0.023
2.236ThrAsp: 2.236 ± 0.043
2.84ThrGlu: 2.84 ± 0.063
1.871ThrPhe: 1.871 ± 0.046
4.824ThrGly: 4.824 ± 0.079
1.081ThrHis: 1.081 ± 0.036
2.906ThrIle: 2.906 ± 0.06
0.851ThrLys: 0.851 ± 0.035
6.646ThrLeu: 6.646 ± 0.091
0.975ThrMet: 0.975 ± 0.036
1.085ThrAsn: 1.085 ± 0.038
4.192ThrPro: 4.192 ± 0.101
1.501ThrGln: 1.501 ± 0.042
3.869ThrArg: 3.869 ± 0.07
2.591ThrSer: 2.591 ± 0.075
3.287ThrThr: 3.287 ± 0.081
5.402ThrVal: 5.402 ± 0.082
0.884ThrTrp: 0.884 ± 0.036
1.238ThrTyr: 1.238 ± 0.038
0.0ThrXaa: 0.0 ± 0.0
Val
10.078ValAla: 10.078 ± 0.123
0.66ValCys: 0.66 ± 0.027
4.084ValAsp: 4.084 ± 0.068
5.865ValGlu: 5.865 ± 0.094
2.631ValPhe: 2.631 ± 0.055
6.409ValGly: 6.409 ± 0.1
1.61ValHis: 1.61 ± 0.044
4.369ValIle: 4.369 ± 0.078
1.366ValLys: 1.366 ± 0.037
10.216ValLeu: 10.216 ± 0.108
1.264ValMet: 1.264 ± 0.038
1.641ValAsn: 1.641 ± 0.048
5.307ValPro: 5.307 ± 0.076
2.822ValGln: 2.822 ± 0.056
7.486ValArg: 7.486 ± 0.103
4.03ValSer: 4.03 ± 0.071
5.351ValThr: 5.351 ± 0.076
8.181ValVal: 8.181 ± 0.115
1.272ValTrp: 1.272 ± 0.037
1.772ValTyr: 1.772 ± 0.045
0.0ValXaa: 0.0 ± 0.0
Trp
1.389TrpAla: 1.389 ± 0.04
0.184TrpCys: 0.184 ± 0.016
0.749TrpAsp: 0.749 ± 0.03
1.112TrpGlu: 1.112 ± 0.035
0.617TrpPhe: 0.617 ± 0.027
1.131TrpGly: 1.131 ± 0.043
0.465TrpHis: 0.465 ± 0.026
0.857TrpIle: 0.857 ± 0.03
0.286TrpLys: 0.286 ± 0.019
2.391TrpLeu: 2.391 ± 0.06
0.345TrpMet: 0.345 ± 0.021
0.452TrpAsn: 0.452 ± 0.023
0.886TrpPro: 0.886 ± 0.031
0.765TrpGln: 0.765 ± 0.033
1.675TrpArg: 1.675 ± 0.05
0.934TrpSer: 0.934 ± 0.032
0.81TrpThr: 0.81 ± 0.029
1.309TrpVal: 1.309 ± 0.04
0.434TrpTrp: 0.434 ± 0.023
0.465TrpTyr: 0.465 ± 0.023
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.446TyrAla: 2.446 ± 0.055
0.259TyrCys: 0.259 ± 0.017
1.248TyrAsp: 1.248 ± 0.04
1.521TyrGlu: 1.521 ± 0.045
0.868TyrPhe: 0.868 ± 0.031
2.174TyrGly: 2.174 ± 0.052
0.575TyrHis: 0.575 ± 0.029
0.799TyrIle: 0.799 ± 0.035
0.3TyrLys: 0.3 ± 0.02
2.787TyrLeu: 2.787 ± 0.048
0.245TyrMet: 0.245 ± 0.017
0.454TyrAsn: 0.454 ± 0.027
1.553TyrPro: 1.553 ± 0.041
0.977TyrGln: 0.977 ± 0.031
2.633TyrArg: 2.633 ± 0.058
0.884TyrSer: 0.884 ± 0.037
1.11TyrThr: 1.11 ± 0.034
1.798TyrVal: 1.798 ± 0.046
0.513TyrTrp: 0.513 ± 0.022
0.686TyrTyr: 0.686 ± 0.028
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 2802 proteins (898898 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