Amino acid dipepetide frequency for Lactobacillus ruminis (strain ATCC 27782 / RF3)

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
5.858AlaAla: 5.858 ± 0.117
0.905AlaCys: 0.905 ± 0.044
4.43AlaAsp: 4.43 ± 0.109
4.966AlaGlu: 4.966 ± 0.124
3.439AlaPhe: 3.439 ± 0.085
5.147AlaGly: 5.147 ± 0.114
1.274AlaHis: 1.274 ± 0.051
5.141AlaIle: 5.141 ± 0.114
5.851AlaLys: 5.851 ± 0.108
7.051AlaLeu: 7.051 ± 0.138
2.087AlaMet: 2.087 ± 0.062
3.031AlaAsn: 3.031 ± 0.075
1.915AlaPro: 1.915 ± 0.056
2.545AlaGln: 2.545 ± 0.078
3.099AlaArg: 3.099 ± 0.076
4.176AlaSer: 4.176 ± 0.093
3.655AlaThr: 3.655 ± 0.088
5.463AlaVal: 5.463 ± 0.116
0.598AlaTrp: 0.598 ± 0.036
2.513AlaTyr: 2.513 ± 0.083
0.0AlaXaa: 0.0 ± 0.0
Cys
0.827CysAla: 0.827 ± 0.042
0.175CysCys: 0.175 ± 0.017
0.669CysAsp: 0.669 ± 0.033
0.582CysGlu: 0.582 ± 0.032
0.526CysPhe: 0.526 ± 0.034
1.018CysGly: 1.018 ± 0.045
0.212CysHis: 0.212 ± 0.019
0.567CysIle: 0.567 ± 0.032
0.451CysLys: 0.451 ± 0.031
0.984CysLeu: 0.984 ± 0.049
0.262CysMet: 0.262 ± 0.026
0.336CysAsn: 0.336 ± 0.023
0.393CysPro: 0.393 ± 0.031
0.325CysGln: 0.325 ± 0.025
0.445CysArg: 0.445 ± 0.03
0.663CysSer: 0.663 ± 0.029
0.364CysThr: 0.364 ± 0.026
0.691CysVal: 0.691 ± 0.038
0.085CysTrp: 0.085 ± 0.012
0.397CysTyr: 0.397 ± 0.032
0.0CysXaa: 0.0 ± 0.0
Asp
4.418AspAla: 4.418 ± 0.096
0.606AspCys: 0.606 ± 0.03
3.852AspAsp: 3.852 ± 0.106
5.374AspGlu: 5.374 ± 0.112
3.019AspPhe: 3.019 ± 0.073
4.104AspGly: 4.104 ± 0.095
1.09AspHis: 1.09 ± 0.047
3.477AspIle: 3.477 ± 0.084
4.183AspLys: 4.183 ± 0.095
5.47AspLeu: 5.47 ± 0.109
1.579AspMet: 1.579 ± 0.055
2.401AspAsn: 2.401 ± 0.087
2.019AspPro: 2.019 ± 0.065
1.754AspGln: 1.754 ± 0.059
2.447AspArg: 2.447 ± 0.074
3.278AspSer: 3.278 ± 0.08
2.368AspThr: 2.368 ± 0.06
4.704AspVal: 4.704 ± 0.103
0.585AspTrp: 0.585 ± 0.035
2.521AspTyr: 2.521 ± 0.072
0.0AspXaa: 0.0 ± 0.0
Glu
4.658GluAla: 4.658 ± 0.106
0.499GluCys: 0.499 ± 0.036
3.695GluAsp: 3.695 ± 0.089
5.358GluGlu: 5.358 ± 0.136
2.755GluPhe: 2.755 ± 0.072
3.435GluGly: 3.435 ± 0.094
1.354GluHis: 1.354 ± 0.05
5.217GluIle: 5.217 ± 0.12
6.986GluLys: 6.986 ± 0.141
6.833GluLeu: 6.833 ± 0.113
2.196GluMet: 2.196 ± 0.062
4.083GluAsn: 4.083 ± 0.097
1.705GluPro: 1.705 ± 0.056
2.571GluGln: 2.571 ± 0.072
3.568GluArg: 3.568 ± 0.087
3.453GluSer: 3.453 ± 0.074
3.858GluThr: 3.858 ± 0.091
4.205GluVal: 4.205 ± 0.097
0.593GluTrp: 0.593 ± 0.036
2.449GluTyr: 2.449 ± 0.067
0.0GluXaa: 0.0 ± 0.0
Phe
3.354PheAla: 3.354 ± 0.096
0.595PheCys: 0.595 ± 0.032
3.025PheAsp: 3.025 ± 0.078
3.056PheGlu: 3.056 ± 0.076
2.172PhePhe: 2.172 ± 0.085
3.26PheGly: 3.26 ± 0.087
0.768PheHis: 0.768 ± 0.04
2.959PheIle: 2.959 ± 0.1
3.162PheLys: 3.162 ± 0.085
4.137PheLeu: 4.137 ± 0.111
1.239PheMet: 1.239 ± 0.049
2.059PheAsn: 2.059 ± 0.071
1.442PhePro: 1.442 ± 0.055
1.243PheGln: 1.243 ± 0.046
1.494PheArg: 1.494 ± 0.05
3.405PheSer: 3.405 ± 0.079
2.083PheThr: 2.083 ± 0.069
3.367PheVal: 3.367 ± 0.092
0.445PheTrp: 0.445 ± 0.031
1.629PheTyr: 1.629 ± 0.062
0.0PheXaa: 0.0 ± 0.0
Gly
4.698GlyAla: 4.698 ± 0.106
0.753GlyCys: 0.753 ± 0.043
3.263GlyAsp: 3.263 ± 0.084
3.653GlyGlu: 3.653 ± 0.087
3.234GlyPhe: 3.234 ± 0.094
4.211GlyGly: 4.211 ± 0.113
1.365GlyHis: 1.365 ± 0.057
5.764GlyIle: 5.764 ± 0.122
5.775GlyLys: 5.775 ± 0.098
6.229GlyLeu: 6.229 ± 0.126
2.092GlyMet: 2.092 ± 0.063
3.079GlyAsn: 3.079 ± 0.085
1.396GlyPro: 1.396 ± 0.05
2.427GlyGln: 2.427 ± 0.085
3.156GlyArg: 3.156 ± 0.078
3.9GlySer: 3.9 ± 0.082
3.945GlyThr: 3.945 ± 0.095
4.395GlyVal: 4.395 ± 0.108
0.606GlyTrp: 0.606 ± 0.034
2.798GlyTyr: 2.798 ± 0.075
0.0GlyXaa: 0.0 ± 0.0
His
1.308HisAla: 1.308 ± 0.049
0.188HisCys: 0.188 ± 0.018
1.241HisAsp: 1.241 ± 0.051
1.35HisGlu: 1.35 ± 0.056
1.005HisPhe: 1.005 ± 0.038
1.44HisGly: 1.44 ± 0.048
0.53HisHis: 0.53 ± 0.036
1.056HisIle: 1.056 ± 0.051
1.077HisLys: 1.077 ± 0.044
1.812HisLeu: 1.812 ± 0.059
0.452HisMet: 0.452 ± 0.031
0.672HisAsn: 0.672 ± 0.036
0.949HisPro: 0.949 ± 0.043
0.772HisGln: 0.772 ± 0.039
0.886HisArg: 0.886 ± 0.044
0.953HisSer: 0.953 ± 0.051
0.789HisThr: 0.789 ± 0.039
1.466HisVal: 1.466 ± 0.05
0.17HisTrp: 0.17 ± 0.02
0.739HisTyr: 0.739 ± 0.042
0.0HisXaa: 0.0 ± 0.0
Ile
5.466IleAla: 5.466 ± 0.107
0.816IleCys: 0.816 ± 0.041
4.587IleAsp: 4.587 ± 0.097
4.816IleGlu: 4.816 ± 0.101
3.073IlePhe: 3.073 ± 0.089
5.071IleGly: 5.071 ± 0.117
1.132IleHis: 1.132 ± 0.045
4.754IleIle: 4.754 ± 0.131
4.894IleLys: 4.894 ± 0.106
6.19IleLeu: 6.19 ± 0.123
1.795IleMet: 1.795 ± 0.06
3.151IleAsn: 3.151 ± 0.079
2.532IlePro: 2.532 ± 0.066
1.965IleGln: 1.965 ± 0.066
2.894IleArg: 2.894 ± 0.076
4.953IleSer: 4.953 ± 0.119
3.492IleThr: 3.492 ± 0.093
5.524IleVal: 5.524 ± 0.098
0.539IleTrp: 0.539 ± 0.03
2.283IleTyr: 2.283 ± 0.057
0.0IleXaa: 0.0 ± 0.0
Lys
5.361LysAla: 5.361 ± 0.106
0.582LysCys: 0.582 ± 0.035
4.349LysAsp: 4.349 ± 0.099
5.895LysGlu: 5.895 ± 0.114
2.484LysPhe: 2.484 ± 0.054
4.122LysGly: 4.122 ± 0.089
1.513LysHis: 1.513 ± 0.053
5.588LysIle: 5.588 ± 0.109
7.472LysLys: 7.472 ± 0.136
6.643LysLeu: 6.643 ± 0.106
2.713LysMet: 2.713 ± 0.064
4.647LysAsn: 4.647 ± 0.107
2.126LysPro: 2.126 ± 0.065
3.047LysGln: 3.047 ± 0.074
4.083LysArg: 4.083 ± 0.091
4.094LysSer: 4.094 ± 0.086
4.634LysThr: 4.634 ± 0.105
4.543LysVal: 4.543 ± 0.108
0.674LysTrp: 0.674 ± 0.042
2.888LysTyr: 2.888 ± 0.07
0.0LysXaa: 0.0 ± 0.0
Leu
7.472LeuAla: 7.472 ± 0.133
1.006LeuCys: 1.006 ± 0.046
5.71LeuAsp: 5.71 ± 0.113
6.466LeuGlu: 6.466 ± 0.119
4.286LeuPhe: 4.286 ± 0.115
6.309LeuGly: 6.309 ± 0.123
1.657LeuHis: 1.657 ± 0.061
6.364LeuIle: 6.364 ± 0.125
7.319LeuLys: 7.319 ± 0.111
8.706LeuLeu: 8.706 ± 0.169
2.696LeuMet: 2.696 ± 0.09
4.595LeuAsn: 4.595 ± 0.097
3.502LeuPro: 3.502 ± 0.081
2.798LeuGln: 2.798 ± 0.079
3.934LeuArg: 3.934 ± 0.106
6.608LeuSer: 6.608 ± 0.123
5.358LeuThr: 5.358 ± 0.093
5.932LeuVal: 5.932 ± 0.114
0.657LeuTrp: 0.657 ± 0.038
2.826LeuTyr: 2.826 ± 0.072
0.0LeuXaa: 0.0 ± 0.0
Met
2.242MetAla: 2.242 ± 0.064
0.225MetCys: 0.225 ± 0.02
1.531MetAsp: 1.531 ± 0.052
1.561MetGlu: 1.561 ± 0.055
1.031MetPhe: 1.031 ± 0.049
1.804MetGly: 1.804 ± 0.055
0.497MetHis: 0.497 ± 0.033
2.451MetIle: 2.451 ± 0.074
2.344MetLys: 2.344 ± 0.068
2.622MetLeu: 2.622 ± 0.078
0.898MetMet: 0.898 ± 0.046
1.431MetAsn: 1.431 ± 0.049
1.101MetPro: 1.101 ± 0.041
1.108MetGln: 1.108 ± 0.055
1.291MetArg: 1.291 ± 0.048
1.825MetSer: 1.825 ± 0.066
1.869MetThr: 1.869 ± 0.057
1.814MetVal: 1.814 ± 0.06
0.175MetTrp: 0.175 ± 0.017
0.729MetTyr: 0.729 ± 0.044
0.0MetXaa: 0.0 ± 0.0
Asn
3.524AsnAla: 3.524 ± 0.087
0.417AsnCys: 0.417 ± 0.032
2.914AsnAsp: 2.914 ± 0.082
3.494AsnGlu: 3.494 ± 0.09
1.976AsnPhe: 1.976 ± 0.065
3.782AsnGly: 3.782 ± 0.106
1.077AsnHis: 1.077 ± 0.045
2.803AsnIle: 2.803 ± 0.074
2.984AsnLys: 2.984 ± 0.094
4.222AsnLeu: 4.222 ± 0.099
1.221AsnMet: 1.221 ± 0.049
2.089AsnAsn: 2.089 ± 0.078
1.978AsnPro: 1.978 ± 0.062
1.989AsnGln: 1.989 ± 0.072
2.133AsnArg: 2.133 ± 0.066
2.626AsnSer: 2.626 ± 0.071
2.024AsnThr: 2.024 ± 0.065
3.575AsnVal: 3.575 ± 0.086
0.447AsnTrp: 0.447 ± 0.03
1.795AsnTyr: 1.795 ± 0.069
0.0AsnXaa: 0.0 ± 0.0
Pro
2.079ProAla: 2.079 ± 0.069
0.259ProCys: 0.259 ± 0.023
2.083ProAsp: 2.083 ± 0.066
2.966ProGlu: 2.966 ± 0.075
1.625ProPhe: 1.625 ± 0.057
2.033ProGly: 2.033 ± 0.067
0.584ProHis: 0.584 ± 0.035
1.995ProIle: 1.995 ± 0.064
2.441ProLys: 2.441 ± 0.06
2.992ProLeu: 2.992 ± 0.082
0.715ProMet: 0.715 ± 0.034
1.474ProAsn: 1.474 ± 0.05
0.526ProPro: 0.526 ± 0.033
1.138ProGln: 1.138 ± 0.052
1.112ProArg: 1.112 ± 0.051
1.897ProSer: 1.897 ± 0.068
1.623ProThr: 1.623 ± 0.055
2.654ProVal: 2.654 ± 0.058
0.305ProTrp: 0.305 ± 0.026
1.332ProTyr: 1.332 ± 0.05
0.0ProXaa: 0.0 ± 0.0
Gln
2.89GlnAla: 2.89 ± 0.079
0.181GlnCys: 0.181 ± 0.017
1.673GlnAsp: 1.673 ± 0.065
2.286GlnGlu: 2.286 ± 0.068
1.204GlnPhe: 1.204 ± 0.047
1.919GlnGly: 1.919 ± 0.059
0.56GlnHis: 0.56 ± 0.033
2.401GlnIle: 2.401 ± 0.065
3.273GlnLys: 3.273 ± 0.09
3.169GlnLeu: 3.169 ± 0.092
1.136GlnMet: 1.136 ± 0.051
1.961GlnAsn: 1.961 ± 0.061
0.922GlnPro: 0.922 ± 0.046
1.383GlnGln: 1.383 ± 0.069
1.699GlnArg: 1.699 ± 0.055
1.945GlnSer: 1.945 ± 0.063
2.181GlnThr: 2.181 ± 0.074
2.264GlnVal: 2.264 ± 0.069
0.292GlnTrp: 0.292 ± 0.03
1.189GlnTyr: 1.189 ± 0.059
0.0GlnXaa: 0.0 ± 0.0
Arg
2.63ArgAla: 2.63 ± 0.075
0.447ArgCys: 0.447 ± 0.029
2.347ArgAsp: 2.347 ± 0.069
2.851ArgGlu: 2.851 ± 0.077
2.331ArgPhe: 2.331 ± 0.068
2.397ArgGly: 2.397 ± 0.067
0.992ArgHis: 0.992 ± 0.041
3.533ArgIle: 3.533 ± 0.085
3.625ArgLys: 3.625 ± 0.079
4.569ArgLeu: 4.569 ± 0.109
1.3ArgMet: 1.3 ± 0.049
2.259ArgAsn: 2.259 ± 0.075
1.344ArgPro: 1.344 ± 0.049
1.854ArgGln: 1.854 ± 0.061
2.432ArgArg: 2.432 ± 0.082
2.331ArgSer: 2.331 ± 0.068
2.168ArgThr: 2.168 ± 0.075
2.731ArgVal: 2.731 ± 0.081
0.286ArgTrp: 0.286 ± 0.024
2.006ArgTyr: 2.006 ± 0.064
0.0ArgXaa: 0.0 ± 0.0
Ser
4.421SerAla: 4.421 ± 0.094
0.497SerCys: 0.497 ± 0.033
3.721SerAsp: 3.721 ± 0.08
4.24SerGlu: 4.24 ± 0.094
2.87SerPhe: 2.87 ± 0.076
4.87SerGly: 4.87 ± 0.114
1.108SerHis: 1.108 ± 0.045
4.122SerIle: 4.122 ± 0.092
4.558SerLys: 4.558 ± 0.102
5.945SerLeu: 5.945 ± 0.117
1.588SerMet: 1.588 ± 0.053
2.6SerAsn: 2.6 ± 0.076
1.703SerPro: 1.703 ± 0.059
2.146SerGln: 2.146 ± 0.07
2.619SerArg: 2.619 ± 0.076
4.347SerSer: 4.347 ± 0.135
2.949SerThr: 2.949 ± 0.081
4.597SerVal: 4.597 ± 0.095
0.65SerTrp: 0.65 ± 0.032
2.246SerTyr: 2.246 ± 0.068
0.0SerXaa: 0.0 ± 0.0
Thr
3.823ThrAla: 3.823 ± 0.093
0.467ThrCys: 0.467 ± 0.032
3.08ThrAsp: 3.08 ± 0.077
3.293ThrGlu: 3.293 ± 0.081
2.347ThrPhe: 2.347 ± 0.061
4.002ThrGly: 4.002 ± 0.101
0.979ThrHis: 0.979 ± 0.04
4.044ThrIle: 4.044 ± 0.087
3.391ThrLys: 3.391 ± 0.08
4.964ThrLeu: 4.964 ± 0.096
1.354ThrMet: 1.354 ± 0.05
2.24ThrAsn: 2.24 ± 0.069
2.067ThrPro: 2.067 ± 0.065
1.577ThrGln: 1.577 ± 0.059
1.928ThrArg: 1.928 ± 0.052
3.267ThrSer: 3.267 ± 0.081
2.905ThrThr: 2.905 ± 0.086
4.22ThrVal: 4.22 ± 0.106
0.419ThrTrp: 0.419 ± 0.03
1.801ThrTyr: 1.801 ± 0.059
0.0ThrXaa: 0.0 ± 0.0
Val
5.047ValAla: 5.047 ± 0.104
0.851ValCys: 0.851 ± 0.044
4.041ValAsp: 4.041 ± 0.085
4.512ValGlu: 4.512 ± 0.113
3.236ValPhe: 3.236 ± 0.081
4.484ValGly: 4.484 ± 0.1
1.187ValHis: 1.187 ± 0.048
5.184ValIle: 5.184 ± 0.113
5.199ValLys: 5.199 ± 0.106
6.866ValLeu: 6.866 ± 0.124
2.035ValMet: 2.035 ± 0.061
2.933ValAsn: 2.933 ± 0.066
2.706ValPro: 2.706 ± 0.069
2.044ValGln: 2.044 ± 0.068
2.794ValArg: 2.794 ± 0.071
5.376ValSer: 5.376 ± 0.108
3.795ValThr: 3.795 ± 0.102
5.265ValVal: 5.265 ± 0.124
0.591ValTrp: 0.591 ± 0.032
2.405ValTyr: 2.405 ± 0.073
0.002ValXaa: 0.002 ± 0.002
Trp
0.508TrpAla: 0.508 ± 0.032
0.107TrpCys: 0.107 ± 0.014
0.476TrpAsp: 0.476 ± 0.031
0.438TrpGlu: 0.438 ± 0.028
0.406TrpPhe: 0.406 ± 0.031
0.558TrpGly: 0.558 ± 0.034
0.227TrpHis: 0.227 ± 0.02
0.665TrpIle: 0.665 ± 0.036
0.571TrpLys: 0.571 ± 0.035
0.931TrpLeu: 0.931 ± 0.044
0.342TrpMet: 0.342 ± 0.025
0.524TrpAsn: 0.524 ± 0.034
0.22TrpPro: 0.22 ± 0.022
0.362TrpGln: 0.362 ± 0.029
0.345TrpArg: 0.345 ± 0.028
0.504TrpSer: 0.504 ± 0.033
0.452TrpThr: 0.452 ± 0.034
0.471TrpVal: 0.471 ± 0.029
0.1TrpTrp: 0.1 ± 0.013
0.386TrpTyr: 0.386 ± 0.038
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.56TyrAla: 2.56 ± 0.067
0.395TyrCys: 0.395 ± 0.028
2.558TyrAsp: 2.558 ± 0.073
2.316TyrGlu: 2.316 ± 0.066
1.874TyrPhe: 1.874 ± 0.068
2.774TyrGly: 2.774 ± 0.074
0.752TyrHis: 0.752 ± 0.037
1.843TyrIle: 1.843 ± 0.062
1.904TyrLys: 1.904 ± 0.065
3.862TyrLeu: 3.862 ± 0.108
0.846TyrMet: 0.846 ± 0.038
1.507TyrAsn: 1.507 ± 0.065
1.287TyrPro: 1.287 ± 0.048
1.479TyrGln: 1.479 ± 0.052
2.074TyrArg: 2.074 ± 0.055
2.196TyrSer: 2.196 ± 0.07
1.657TyrThr: 1.657 ± 0.049
2.672TyrVal: 2.672 ± 0.072
0.375TyrTrp: 0.375 ± 0.03
1.636TyrTyr: 1.636 ± 0.07
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
0.002XaaLeu: 0.002 ± 0.002
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 1851 proteins (541482 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