Amino acid dipepetide frequency for Pseudidiomarina salinarum

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
11.129AlaAla: 11.129 ± 0.147
0.878AlaCys: 0.878 ± 0.034
6.282AlaAsp: 6.282 ± 0.086
7.267AlaGlu: 7.267 ± 0.117
3.424AlaPhe: 3.424 ± 0.072
7.897AlaGly: 7.897 ± 0.129
1.775AlaHis: 1.775 ± 0.059
5.841AlaIle: 5.841 ± 0.105
3.662AlaLys: 3.662 ± 0.091
10.751AlaLeu: 10.751 ± 0.142
2.69AlaMet: 2.69 ± 0.066
3.083AlaAsn: 3.083 ± 0.071
3.551AlaPro: 3.551 ± 0.077
4.336AlaGln: 4.336 ± 0.098
5.671AlaArg: 5.671 ± 0.095
5.194AlaSer: 5.194 ± 0.093
5.052AlaThr: 5.052 ± 0.091
7.189AlaVal: 7.189 ± 0.105
1.155AlaTrp: 1.155 ± 0.045
2.504AlaTyr: 2.504 ± 0.059
0.0AlaXaa: 0.0 ± 0.0
Cys
0.738CysAla: 0.738 ± 0.035
0.108CysCys: 0.108 ± 0.013
0.515CysAsp: 0.515 ± 0.032
0.481CysGlu: 0.481 ± 0.024
0.29CysPhe: 0.29 ± 0.02
0.777CysGly: 0.777 ± 0.04
0.272CysHis: 0.272 ± 0.021
0.44CysIle: 0.44 ± 0.025
0.293CysLys: 0.293 ± 0.021
0.764CysLeu: 0.764 ± 0.037
0.166CysMet: 0.166 ± 0.014
0.272CysAsn: 0.272 ± 0.02
0.424CysPro: 0.424 ± 0.027
0.397CysGln: 0.397 ± 0.025
0.478CysArg: 0.478 ± 0.028
0.528CysSer: 0.528 ± 0.028
0.401CysThr: 0.401 ± 0.022
0.526CysVal: 0.526 ± 0.027
0.114CysTrp: 0.114 ± 0.012
0.279CysTyr: 0.279 ± 0.018
0.0CysXaa: 0.0 ± 0.0
Asp
5.396AspAla: 5.396 ± 0.091
0.508AspCys: 0.508 ± 0.034
3.705AspAsp: 3.705 ± 0.08
4.305AspGlu: 4.305 ± 0.089
2.638AspPhe: 2.638 ± 0.068
4.126AspGly: 4.126 ± 0.084
1.259AspHis: 1.259 ± 0.043
3.66AspIle: 3.66 ± 0.079
2.655AspLys: 2.655 ± 0.078
5.585AspLeu: 5.585 ± 0.084
1.468AspMet: 1.468 ± 0.042
2.046AspAsn: 2.046 ± 0.055
2.575AspPro: 2.575 ± 0.064
2.454AspGln: 2.454 ± 0.063
3.064AspArg: 3.064 ± 0.069
3.104AspSer: 3.104 ± 0.061
2.75AspThr: 2.75 ± 0.071
3.99AspVal: 3.99 ± 0.079
1.033AspTrp: 1.033 ± 0.042
2.345AspTyr: 2.345 ± 0.069
0.0AspXaa: 0.0 ± 0.0
Glu
5.992GluAla: 5.992 ± 0.103
0.381GluCys: 0.381 ± 0.025
3.059GluAsp: 3.059 ± 0.088
3.508GluGlu: 3.508 ± 0.084
2.527GluPhe: 2.527 ± 0.061
3.69GluGly: 3.69 ± 0.085
1.649GluHis: 1.649 ± 0.051
3.5GluIle: 3.5 ± 0.078
2.648GluLys: 2.648 ± 0.09
7.985GluLeu: 7.985 ± 0.128
1.519GluMet: 1.519 ± 0.053
2.093GluAsn: 2.093 ± 0.053
2.609GluPro: 2.609 ± 0.077
4.689GluGln: 4.689 ± 0.1
4.561GluArg: 4.561 ± 0.088
3.015GluSer: 3.015 ± 0.07
3.005GluThr: 3.005 ± 0.068
4.515GluVal: 4.515 ± 0.099
0.72GluTrp: 0.72 ± 0.038
1.591GluTyr: 1.591 ± 0.049
0.0GluXaa: 0.0 ± 0.0
Phe
3.999PheAla: 3.999 ± 0.076
0.386PheCys: 0.386 ± 0.026
2.554PheAsp: 2.554 ± 0.066
2.14PheGlu: 2.14 ± 0.052
1.511PhePhe: 1.511 ± 0.05
3.239PheGly: 3.239 ± 0.079
0.775PheHis: 0.775 ± 0.034
2.367PheIle: 2.367 ± 0.06
1.41PheLys: 1.41 ± 0.041
3.214PheLeu: 3.214 ± 0.077
0.953PheMet: 0.953 ± 0.04
1.555PheAsn: 1.555 ± 0.055
1.424PhePro: 1.424 ± 0.047
1.117PheGln: 1.117 ± 0.04
1.949PheArg: 1.949 ± 0.056
2.945PheSer: 2.945 ± 0.069
2.295PheThr: 2.295 ± 0.06
2.527PheVal: 2.527 ± 0.069
0.572PheTrp: 0.572 ± 0.031
1.26PheTyr: 1.26 ± 0.048
0.0PheXaa: 0.0 ± 0.0
Gly
6.25GlyAla: 6.25 ± 0.126
0.73GlyCys: 0.73 ± 0.032
4.22GlyAsp: 4.22 ± 0.098
4.636GlyGlu: 4.636 ± 0.095
3.127GlyPhe: 3.127 ± 0.076
5.406GlyGly: 5.406 ± 0.096
1.707GlyHis: 1.707 ± 0.051
4.548GlyIle: 4.548 ± 0.089
3.446GlyLys: 3.446 ± 0.082
7.438GlyLeu: 7.438 ± 0.112
2.083GlyMet: 2.083 ± 0.06
2.428GlyAsn: 2.428 ± 0.063
2.11GlyPro: 2.11 ± 0.053
3.091GlyGln: 3.091 ± 0.066
3.948GlyArg: 3.948 ± 0.085
4.376GlySer: 4.376 ± 0.09
3.605GlyThr: 3.605 ± 0.081
5.585GlyVal: 5.585 ± 0.101
1.169GlyTrp: 1.169 ± 0.041
2.643GlyTyr: 2.643 ± 0.063
0.0GlyXaa: 0.0 ± 0.0
His
1.839HisAla: 1.839 ± 0.053
0.307HisCys: 0.307 ± 0.017
1.172HisAsp: 1.172 ± 0.04
1.347HisGlu: 1.347 ± 0.05
0.926HisPhe: 0.926 ± 0.037
1.714HisGly: 1.714 ± 0.056
0.64HisHis: 0.64 ± 0.036
1.268HisIle: 1.268 ± 0.045
0.837HisLys: 0.837 ± 0.034
2.17HisLeu: 2.17 ± 0.061
0.468HisMet: 0.468 ± 0.026
0.768HisAsn: 0.768 ± 0.035
1.332HisPro: 1.332 ± 0.043
1.268HisGln: 1.268 ± 0.048
1.327HisArg: 1.327 ± 0.047
1.258HisSer: 1.258 ± 0.043
1.013HisThr: 1.013 ± 0.039
1.256HisVal: 1.256 ± 0.042
0.359HisTrp: 0.359 ± 0.024
0.837HisTyr: 0.837 ± 0.038
0.0HisXaa: 0.0 ± 0.0
Ile
6.285IleAla: 6.285 ± 0.112
0.566IleCys: 0.566 ± 0.033
3.872IleAsp: 3.872 ± 0.075
4.045IleGlu: 4.045 ± 0.079
1.943IlePhe: 1.943 ± 0.059
4.668IleGly: 4.668 ± 0.095
1.167IleHis: 1.167 ± 0.039
3.255IleIle: 3.255 ± 0.071
2.308IleLys: 2.308 ± 0.058
4.919IleLeu: 4.919 ± 0.096
1.221IleMet: 1.221 ± 0.042
2.226IleAsn: 2.226 ± 0.054
2.589IlePro: 2.589 ± 0.059
1.95IleGln: 1.95 ± 0.055
3.249IleArg: 3.249 ± 0.065
3.668IleSer: 3.668 ± 0.076
3.318IleThr: 3.318 ± 0.072
3.604IleVal: 3.604 ± 0.08
0.69IleTrp: 0.69 ± 0.033
1.608IleTyr: 1.608 ± 0.045
0.0IleXaa: 0.0 ± 0.0
Lys
4.009LysAla: 4.009 ± 0.102
0.195LysCys: 0.195 ± 0.023
2.087LysAsp: 2.087 ± 0.07
2.387LysGlu: 2.387 ± 0.081
1.262LysPhe: 1.262 ± 0.044
2.554LysGly: 2.554 ± 0.063
0.916LysHis: 0.916 ± 0.041
2.168LysIle: 2.168 ± 0.061
2.024LysLys: 2.024 ± 0.072
4.214LysLeu: 4.214 ± 0.098
0.955LysMet: 0.955 ± 0.035
1.319LysAsn: 1.319 ± 0.05
2.133LysPro: 2.133 ± 0.066
2.061LysGln: 2.061 ± 0.064
2.512LysArg: 2.512 ± 0.068
2.154LysSer: 2.154 ± 0.063
2.083LysThr: 2.083 ± 0.05
3.006LysVal: 3.006 ± 0.069
0.404LysTrp: 0.404 ± 0.024
1.07LysTyr: 1.07 ± 0.043
0.0LysXaa: 0.0 ± 0.0
Leu
11.869LeuAla: 11.869 ± 0.181
0.828LeuCys: 0.828 ± 0.035
5.817LeuAsp: 5.817 ± 0.097
6.201LeuGlu: 6.201 ± 0.098
3.894LeuPhe: 3.894 ± 0.09
7.092LeuGly: 7.092 ± 0.111
2.288LeuHis: 2.288 ± 0.068
5.959LeuIle: 5.959 ± 0.096
4.292LeuLys: 4.292 ± 0.084
11.742LeuLeu: 11.742 ± 0.204
2.548LeuMet: 2.548 ± 0.061
3.857LeuAsn: 3.857 ± 0.066
5.237LeuPro: 5.237 ± 0.09
5.187LeuGln: 5.187 ± 0.106
6.287LeuArg: 6.287 ± 0.095
6.77LeuSer: 6.77 ± 0.106
6.358LeuThr: 6.358 ± 0.106
7.356LeuVal: 7.356 ± 0.122
1.238LeuTrp: 1.238 ± 0.053
2.582LeuTyr: 2.582 ± 0.067
0.0LeuXaa: 0.0 ± 0.0
Met
2.707MetAla: 2.707 ± 0.066
0.121MetCys: 0.121 ± 0.014
1.219MetAsp: 1.219 ± 0.044
1.159MetGlu: 1.159 ± 0.043
0.718MetPhe: 0.718 ± 0.027
1.669MetGly: 1.669 ± 0.055
0.505MetHis: 0.505 ± 0.027
1.297MetIle: 1.297 ± 0.048
1.164MetLys: 1.164 ± 0.043
2.751MetLeu: 2.751 ± 0.059
0.646MetMet: 0.646 ± 0.032
0.994MetAsn: 0.994 ± 0.041
1.211MetPro: 1.211 ± 0.04
1.218MetGln: 1.218 ± 0.042
1.39MetArg: 1.39 ± 0.039
1.643MetSer: 1.643 ± 0.047
1.593MetThr: 1.593 ± 0.049
1.808MetVal: 1.808 ± 0.051
0.218MetTrp: 0.218 ± 0.018
0.524MetTyr: 0.524 ± 0.029
0.0MetXaa: 0.0 ± 0.0
Asn
3.03AsnAla: 3.03 ± 0.077
0.354AsnCys: 0.354 ± 0.027
1.94AsnAsp: 1.94 ± 0.057
2.076AsnGlu: 2.076 ± 0.06
1.404AsnPhe: 1.404 ± 0.043
2.391AsnGly: 2.391 ± 0.063
0.693AsnHis: 0.693 ± 0.032
1.938AsnIle: 1.938 ± 0.062
1.401AsnLys: 1.401 ± 0.044
3.497AsnLeu: 3.497 ± 0.065
0.841AsnMet: 0.841 ± 0.03
1.346AsnAsn: 1.346 ± 0.049
1.884AsnPro: 1.884 ± 0.051
1.563AsnGln: 1.563 ± 0.052
2.013AsnArg: 2.013 ± 0.061
1.892AsnSer: 1.892 ± 0.061
1.771AsnThr: 1.771 ± 0.052
2.007AsnVal: 2.007 ± 0.057
0.693AsnTrp: 0.693 ± 0.033
1.245AsnTyr: 1.245 ± 0.05
0.0AsnXaa: 0.0 ± 0.0
Pro
4.806ProAla: 4.806 ± 0.101
0.267ProCys: 0.267 ± 0.02
3.231ProAsp: 3.231 ± 0.077
3.722ProGlu: 3.722 ± 0.087
1.608ProPhe: 1.608 ± 0.046
3.318ProGly: 3.318 ± 0.07
0.878ProHis: 0.878 ± 0.034
1.979ProIle: 1.979 ± 0.053
1.534ProLys: 1.534 ± 0.053
4.685ProLeu: 4.685 ± 0.084
1.027ProMet: 1.027 ± 0.038
1.333ProAsn: 1.333 ± 0.043
1.598ProPro: 1.598 ± 0.055
2.019ProGln: 2.019 ± 0.054
2.004ProArg: 2.004 ± 0.049
2.014ProSer: 2.014 ± 0.055
2.059ProThr: 2.059 ± 0.051
3.835ProVal: 3.835 ± 0.07
0.558ProTrp: 0.558 ± 0.029
1.194ProTyr: 1.194 ± 0.044
0.0ProXaa: 0.0 ± 0.0
Gln
4.932GlnAla: 4.932 ± 0.096
0.312GlnCys: 0.312 ± 0.023
2.194GlnAsp: 2.194 ± 0.058
2.434GlnGlu: 2.434 ± 0.062
1.627GlnPhe: 1.627 ± 0.055
3.117GlnGly: 3.117 ± 0.077
1.32GlnHis: 1.32 ± 0.045
2.4GlnIle: 2.4 ± 0.054
1.519GlnLys: 1.519 ± 0.05
6.546GlnLeu: 6.546 ± 0.131
0.977GlnMet: 0.977 ± 0.04
1.248GlnAsn: 1.248 ± 0.049
2.501GlnPro: 2.501 ± 0.055
4.676GlnGln: 4.676 ± 0.128
3.81GlnArg: 3.81 ± 0.092
2.389GlnSer: 2.389 ± 0.061
2.014GlnThr: 2.014 ± 0.056
3.586GlnVal: 3.586 ± 0.074
0.667GlnTrp: 0.667 ± 0.032
1.061GlnTyr: 1.061 ± 0.04
0.0GlnXaa: 0.0 ± 0.0
Arg
4.918ArgAla: 4.918 ± 0.083
0.427ArgCys: 0.427 ± 0.028
3.537ArgAsp: 3.537 ± 0.079
4.089ArgGlu: 4.089 ± 0.078
2.549ArgPhe: 2.549 ± 0.061
3.619ArgGly: 3.619 ± 0.084
1.428ArgHis: 1.428 ± 0.046
3.633ArgIle: 3.633 ± 0.074
2.431ArgLys: 2.431 ± 0.064
6.581ArgLeu: 6.581 ± 0.112
1.492ArgMet: 1.492 ± 0.044
2.041ArgAsn: 2.041 ± 0.054
2.272ArgPro: 2.272 ± 0.074
3.352ArgGln: 3.352 ± 0.075
3.76ArgArg: 3.76 ± 0.085
3.204ArgSer: 3.204 ± 0.082
2.645ArgThr: 2.645 ± 0.064
3.889ArgVal: 3.889 ± 0.075
0.994ArgTrp: 0.994 ± 0.036
2.091ArgTyr: 2.091 ± 0.059
0.0ArgXaa: 0.0 ± 0.0
Ser
5.635SerAla: 5.635 ± 0.108
0.509SerCys: 0.509 ± 0.031
3.446SerAsp: 3.446 ± 0.089
3.534SerGlu: 3.534 ± 0.084
2.342SerPhe: 2.342 ± 0.072
4.982SerGly: 4.982 ± 0.093
1.215SerHis: 1.215 ± 0.046
2.969SerIle: 2.969 ± 0.068
2.167SerLys: 2.167 ± 0.059
5.979SerLeu: 5.979 ± 0.104
1.512SerMet: 1.512 ± 0.047
1.849SerAsn: 1.849 ± 0.056
2.491SerPro: 2.491 ± 0.068
2.417SerGln: 2.417 ± 0.057
3.222SerArg: 3.222 ± 0.067
3.47SerSer: 3.47 ± 0.082
2.821SerThr: 2.821 ± 0.072
4.035SerVal: 4.035 ± 0.07
0.909SerTrp: 0.909 ± 0.031
1.808SerTyr: 1.808 ± 0.056
0.0SerXaa: 0.0 ± 0.0
Thr
5.275ThrAla: 5.275 ± 0.109
0.407ThrCys: 0.407 ± 0.03
3.315ThrAsp: 3.315 ± 0.072
3.402ThrGlu: 3.402 ± 0.066
1.865ThrPhe: 1.865 ± 0.054
4.567ThrGly: 4.567 ± 0.08
1.111ThrHis: 1.111 ± 0.035
3.009ThrIle: 3.009 ± 0.069
1.592ThrLys: 1.592 ± 0.046
5.607ThrLeu: 5.607 ± 0.087
1.135ThrMet: 1.135 ± 0.042
1.602ThrAsn: 1.602 ± 0.052
2.642ThrPro: 2.642 ± 0.063
1.885ThrGln: 1.885 ± 0.054
2.791ThrArg: 2.791 ± 0.073
2.864ThrSer: 2.864 ± 0.069
2.851ThrThr: 2.851 ± 0.07
3.954ThrVal: 3.954 ± 0.08
0.612ThrTrp: 0.612 ± 0.032
1.417ThrTyr: 1.417 ± 0.05
0.0ThrXaa: 0.0 ± 0.0
Val
7.183ValAla: 7.183 ± 0.106
0.566ValCys: 0.566 ± 0.03
4.185ValAsp: 4.185 ± 0.082
4.303ValGlu: 4.303 ± 0.08
2.576ValPhe: 2.576 ± 0.069
4.692ValGly: 4.692 ± 0.098
1.364ValHis: 1.364 ± 0.041
4.752ValIle: 4.752 ± 0.092
2.832ValLys: 2.832 ± 0.072
7.322ValLeu: 7.322 ± 0.12
1.94ValMet: 1.94 ± 0.055
2.619ValAsn: 2.619 ± 0.063
3.066ValPro: 3.066 ± 0.062
2.636ValGln: 2.636 ± 0.063
3.931ValArg: 3.931 ± 0.075
4.367ValSer: 4.367 ± 0.088
4.359ValThr: 4.359 ± 0.083
5.555ValVal: 5.555 ± 0.086
0.831ValTrp: 0.831 ± 0.037
1.841ValTyr: 1.841 ± 0.053
0.0ValXaa: 0.0 ± 0.0
Trp
0.873TrpAla: 0.873 ± 0.041
0.131TrpCys: 0.131 ± 0.015
0.646TrpAsp: 0.646 ± 0.031
0.612TrpGlu: 0.612 ± 0.031
0.68TrpPhe: 0.68 ± 0.033
0.79TrpGly: 0.79 ± 0.04
0.417TrpHis: 0.417 ± 0.025
0.679TrpIle: 0.679 ± 0.029
0.336TrpLys: 0.336 ± 0.021
2.266TrpLeu: 2.266 ± 0.076
0.33TrpMet: 0.33 ± 0.026
0.361TrpAsn: 0.361 ± 0.021
0.585TrpPro: 0.585 ± 0.028
1.201TrpGln: 1.201 ± 0.048
0.989TrpArg: 0.989 ± 0.044
0.703TrpSer: 0.703 ± 0.032
0.506TrpThr: 0.506 ± 0.025
0.875TrpVal: 0.875 ± 0.036
0.27TrpTrp: 0.27 ± 0.022
0.44TrpTyr: 0.44 ± 0.03
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.464TyrAla: 2.464 ± 0.063
0.282TyrCys: 0.282 ± 0.02
1.67TyrAsp: 1.67 ± 0.057
1.608TyrGlu: 1.608 ± 0.048
1.279TyrPhe: 1.279 ± 0.047
2.239TyrGly: 2.239 ± 0.066
0.726TyrHis: 0.726 ± 0.035
1.488TyrIle: 1.488 ± 0.043
0.963TyrLys: 0.963 ± 0.041
3.386TyrLeu: 3.386 ± 0.074
0.582TyrMet: 0.582 ± 0.029
0.939TyrAsn: 0.939 ± 0.042
1.435TyrPro: 1.435 ± 0.051
1.814TyrGln: 1.814 ± 0.057
1.997TyrArg: 1.997 ± 0.055
1.757TyrSer: 1.757 ± 0.06
1.403TyrThr: 1.403 ± 0.05
1.822TyrVal: 1.822 ± 0.045
0.484TyrTrp: 0.484 ± 0.028
0.93TyrTyr: 0.93 ± 0.039
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 2100 proteins (702921 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