Amino acid dipepetide frequency for Clostridium sp. CAG:169

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
8.508AlaAla: 8.508 ± 0.146
1.424AlaCys: 1.424 ± 0.057
4.43AlaAsp: 4.43 ± 0.114
4.74AlaGlu: 4.74 ± 0.111
3.182AlaPhe: 3.182 ± 0.08
6.149AlaGly: 6.149 ± 0.124
1.332AlaHis: 1.332 ± 0.045
5.021AlaIle: 5.021 ± 0.113
4.747AlaLys: 4.747 ± 0.102
8.21AlaLeu: 8.21 ± 0.138
2.547AlaMet: 2.547 ± 0.074
2.528AlaAsn: 2.528 ± 0.074
2.326AlaPro: 2.326 ± 0.07
4.927AlaGln: 4.927 ± 0.107
3.427AlaArg: 3.427 ± 0.086
4.193AlaSer: 4.193 ± 0.098
3.245AlaThr: 3.245 ± 0.083
6.914AlaVal: 6.914 ± 0.108
0.534AlaTrp: 0.534 ± 0.031
2.392AlaTyr: 2.392 ± 0.076
0.005AlaXaa: 0.005 ± 0.003
Cys
1.538CysAla: 1.538 ± 0.051
0.528CysCys: 0.528 ± 0.038
1.044CysAsp: 1.044 ± 0.041
0.997CysGlu: 0.997 ± 0.05
0.781CysPhe: 0.781 ± 0.04
1.765CysGly: 1.765 ± 0.067
0.393CysHis: 0.393 ± 0.03
1.107CysIle: 1.107 ± 0.05
0.849CysLys: 0.849 ± 0.041
1.583CysLeu: 1.583 ± 0.058
0.443CysMet: 0.443 ± 0.03
0.653CysAsn: 0.653 ± 0.034
0.806CysPro: 0.806 ± 0.037
0.685CysGln: 0.685 ± 0.039
1.087CysArg: 1.087 ± 0.055
1.17CysSer: 1.17 ± 0.046
0.901CysThr: 0.901 ± 0.039
1.208CysVal: 1.208 ± 0.049
0.164CysTrp: 0.164 ± 0.016
0.584CysTyr: 0.584 ± 0.032
0.0CysXaa: 0.0 ± 0.0
Asp
4.17AspAla: 4.17 ± 0.091
1.044AspCys: 1.044 ± 0.055
2.565AspAsp: 2.565 ± 0.078
3.997AspGlu: 3.997 ± 0.091
2.629AspPhe: 2.629 ± 0.074
4.32AspGly: 4.32 ± 0.095
1.031AspHis: 1.031 ± 0.043
3.671AspIle: 3.671 ± 0.082
2.778AspLys: 2.778 ± 0.073
4.682AspLeu: 4.682 ± 0.096
1.325AspMet: 1.325 ± 0.049
1.76AspAsn: 1.76 ± 0.063
2.376AspPro: 2.376 ± 0.06
1.651AspGln: 1.651 ± 0.054
2.919AspArg: 2.919 ± 0.071
3.265AspSer: 3.265 ± 0.077
2.838AspThr: 2.838 ± 0.077
3.564AspVal: 3.564 ± 0.098
0.55AspTrp: 0.55 ± 0.038
2.418AspTyr: 2.418 ± 0.089
0.0AspXaa: 0.0 ± 0.0
Glu
4.408GluAla: 4.408 ± 0.097
0.815GluCys: 0.815 ± 0.04
3.634GluAsp: 3.634 ± 0.078
6.622GluGlu: 6.622 ± 0.13
2.217GluPhe: 2.217 ± 0.068
4.424GluGly: 4.424 ± 0.108
1.376GluHis: 1.376 ± 0.057
4.202GluIle: 4.202 ± 0.092
4.963GluLys: 4.963 ± 0.089
6.366GluLeu: 6.366 ± 0.124
2.308GluMet: 2.308 ± 0.073
3.458GluAsn: 3.458 ± 0.076
2.109GluPro: 2.109 ± 0.064
5.562GluGln: 5.562 ± 0.131
3.544GluArg: 3.544 ± 0.085
3.24GluSer: 3.24 ± 0.081
2.755GluThr: 2.755 ± 0.074
4.128GluVal: 4.128 ± 0.087
0.586GluTrp: 0.586 ± 0.029
2.645GluTyr: 2.645 ± 0.087
0.0GluXaa: 0.0 ± 0.0
Phe
3.656PheAla: 3.656 ± 0.079
1.038PheCys: 1.038 ± 0.052
2.582PheAsp: 2.582 ± 0.07
2.54PheGlu: 2.54 ± 0.07
2.019PhePhe: 2.019 ± 0.077
3.124PheGly: 3.124 ± 0.074
0.889PheHis: 0.889 ± 0.044
2.331PheIle: 2.331 ± 0.061
1.455PheLys: 1.455 ± 0.046
4.004PheLeu: 4.004 ± 0.097
0.95PheMet: 0.95 ± 0.048
1.321PheAsn: 1.321 ± 0.048
1.482PhePro: 1.482 ± 0.051
1.266PheGln: 1.266 ± 0.044
1.614PheArg: 1.614 ± 0.059
3.094PheSer: 3.094 ± 0.077
2.3PheThr: 2.3 ± 0.07
3.027PheVal: 3.027 ± 0.076
0.496PheTrp: 0.496 ± 0.032
1.675PheTyr: 1.675 ± 0.058
0.0PheXaa: 0.0 ± 0.0
Gly
5.398GlyAla: 5.398 ± 0.123
1.725GlyCys: 1.725 ± 0.053
3.418GlyAsp: 3.418 ± 0.087
4.887GlyGlu: 4.887 ± 0.093
3.193GlyPhe: 3.193 ± 0.075
5.167GlyGly: 5.167 ± 0.131
1.289GlyHis: 1.289 ± 0.05
5.304GlyIle: 5.304 ± 0.112
5.024GlyLys: 5.024 ± 0.102
6.218GlyLeu: 6.218 ± 0.107
2.382GlyMet: 2.382 ± 0.07
2.713GlyAsn: 2.713 ± 0.07
1.446GlyPro: 1.446 ± 0.052
2.829GlyGln: 2.829 ± 0.071
3.465GlyArg: 3.465 ± 0.084
4.574GlySer: 4.574 ± 0.106
3.764GlyThr: 3.764 ± 0.09
5.434GlyVal: 5.434 ± 0.107
0.795GlyTrp: 0.795 ± 0.039
2.928GlyTyr: 2.928 ± 0.074
0.0GlyXaa: 0.0 ± 0.0
His
1.251HisAla: 1.251 ± 0.051
0.449HisCys: 0.449 ± 0.028
0.93HisAsp: 0.93 ± 0.048
0.855HisGlu: 0.855 ± 0.039
0.905HisPhe: 0.905 ± 0.045
1.329HisGly: 1.329 ± 0.055
0.494HisHis: 0.494 ± 0.034
1.363HisIle: 1.363 ± 0.052
0.878HisLys: 0.878 ± 0.038
2.086HisLeu: 2.086 ± 0.083
0.411HisMet: 0.411 ± 0.027
0.681HisAsn: 0.681 ± 0.036
1.183HisPro: 1.183 ± 0.043
0.851HisGln: 0.851 ± 0.042
1.206HisArg: 1.206 ± 0.058
1.183HisSer: 1.183 ± 0.051
1.069HisThr: 1.069 ± 0.051
0.928HisVal: 0.928 ± 0.048
0.22HisTrp: 0.22 ± 0.019
0.681HisTyr: 0.681 ± 0.034
0.0HisXaa: 0.0 ± 0.0
Ile
5.609IleAla: 5.609 ± 0.119
1.248IleCys: 1.248 ± 0.055
3.883IleAsp: 3.883 ± 0.085
4.24IleGlu: 4.24 ± 0.094
2.522IlePhe: 2.522 ± 0.071
4.738IleGly: 4.738 ± 0.101
1.233IleHis: 1.233 ± 0.046
3.863IleIle: 3.863 ± 0.108
3.009IleLys: 3.009 ± 0.085
6.144IleLeu: 6.144 ± 0.114
1.399IleMet: 1.399 ± 0.053
2.311IleAsn: 2.311 ± 0.07
2.885IlePro: 2.885 ± 0.075
2.208IleGln: 2.208 ± 0.071
3.317IleArg: 3.317 ± 0.075
4.332IleSer: 4.332 ± 0.1
3.42IleThr: 3.42 ± 0.098
4.193IleVal: 4.193 ± 0.105
0.512IleTrp: 0.512 ± 0.031
1.967IleTyr: 1.967 ± 0.056
0.002IleXaa: 0.002 ± 0.002
Lys
4.507LysAla: 4.507 ± 0.099
0.514LysCys: 0.514 ± 0.031
2.776LysAsp: 2.776 ± 0.078
4.785LysGlu: 4.785 ± 0.104
1.442LysPhe: 1.442 ± 0.05
3.669LysGly: 3.669 ± 0.084
0.838LysHis: 0.838 ± 0.041
3.544LysIle: 3.544 ± 0.076
4.312LysLys: 4.312 ± 0.102
5.003LysLeu: 5.003 ± 0.093
1.98LysMet: 1.98 ± 0.056
2.571LysAsn: 2.571 ± 0.074
2.108LysPro: 2.108 ± 0.066
2.643LysGln: 2.643 ± 0.078
2.924LysArg: 2.924 ± 0.076
2.538LysSer: 2.538 ± 0.079
3.074LysThr: 3.074 ± 0.073
3.757LysVal: 3.757 ± 0.093
0.416LysTrp: 0.416 ± 0.024
1.725LysTyr: 1.725 ± 0.06
0.0LysXaa: 0.0 ± 0.0
Leu
7.824LeuAla: 7.824 ± 0.124
2.473LeuCys: 2.473 ± 0.066
5.335LeuAsp: 5.335 ± 0.101
6.757LeuGlu: 6.757 ± 0.115
4.395LeuPhe: 4.395 ± 0.104
6.914LeuGly: 6.914 ± 0.113
2.183LeuHis: 2.183 ± 0.072
5.358LeuIle: 5.358 ± 0.132
4.842LeuLys: 4.842 ± 0.099
11.287LeuLeu: 11.287 ± 0.207
2.899LeuMet: 2.899 ± 0.073
3.485LeuAsn: 3.485 ± 0.095
4.503LeuPro: 4.503 ± 0.096
3.69LeuGln: 3.69 ± 0.083
4.866LeuArg: 4.866 ± 0.105
7.186LeuSer: 7.186 ± 0.137
5.441LeuThr: 5.441 ± 0.104
6.238LeuVal: 6.238 ± 0.099
0.88LeuTrp: 0.88 ± 0.043
3.256LeuTyr: 3.256 ± 0.079
0.0LeuXaa: 0.0 ± 0.0
Met
2.373MetAla: 2.373 ± 0.068
0.317MetCys: 0.317 ± 0.023
1.733MetAsp: 1.733 ± 0.056
2.322MetGlu: 2.322 ± 0.069
0.858MetPhe: 0.858 ± 0.041
2.212MetGly: 2.212 ± 0.068
0.445MetHis: 0.445 ± 0.029
1.772MetIle: 1.772 ± 0.061
2.07MetLys: 2.07 ± 0.058
2.975MetLeu: 2.975 ± 0.069
1.085MetMet: 1.085 ± 0.047
1.276MetAsn: 1.276 ± 0.047
1.188MetPro: 1.188 ± 0.047
1.536MetGln: 1.536 ± 0.06
1.275MetArg: 1.275 ± 0.046
1.619MetSer: 1.619 ± 0.054
1.716MetThr: 1.716 ± 0.058
2.212MetVal: 2.212 ± 0.07
0.178MetTrp: 0.178 ± 0.018
0.752MetTyr: 0.752 ± 0.039
0.0MetXaa: 0.0 ± 0.0
Asn
2.872AsnAla: 2.872 ± 0.08
0.618AsnCys: 0.618 ± 0.037
1.875AsnAsp: 1.875 ± 0.065
2.234AsnGlu: 2.234 ± 0.063
1.448AsnPhe: 1.448 ± 0.051
3.106AsnGly: 3.106 ± 0.09
0.802AsnHis: 0.802 ± 0.038
2.711AsnIle: 2.711 ± 0.066
1.833AsnLys: 1.833 ± 0.06
3.606AsnLeu: 3.606 ± 0.077
1.006AsnMet: 1.006 ± 0.04
1.458AsnAsn: 1.458 ± 0.067
2.035AsnPro: 2.035 ± 0.066
1.509AsnGln: 1.509 ± 0.059
2.041AsnArg: 2.041 ± 0.06
2.026AsnSer: 2.026 ± 0.059
2.055AsnThr: 2.055 ± 0.069
2.295AsnVal: 2.295 ± 0.067
0.364AsnTrp: 0.364 ± 0.03
1.338AsnTyr: 1.338 ± 0.053
0.0AsnXaa: 0.0 ± 0.0
Pro
3.144ProAla: 3.144 ± 0.084
0.599ProCys: 0.599 ± 0.039
2.394ProAsp: 2.394 ± 0.072
2.757ProGlu: 2.757 ± 0.075
1.716ProPhe: 1.716 ± 0.054
2.113ProGly: 2.113 ± 0.066
0.696ProHis: 0.696 ± 0.04
2.154ProIle: 2.154 ± 0.063
2.055ProLys: 2.055 ± 0.063
3.559ProLeu: 3.559 ± 0.084
1.143ProMet: 1.143 ± 0.045
1.417ProAsn: 1.417 ± 0.049
1.098ProPro: 1.098 ± 0.055
2.672ProGln: 2.672 ± 0.077
1.21ProArg: 1.21 ± 0.043
2.295ProSer: 2.295 ± 0.062
1.927ProThr: 1.927 ± 0.063
3.306ProVal: 3.306 ± 0.078
0.296ProTrp: 0.296 ± 0.021
1.356ProTyr: 1.356 ± 0.051
0.002ProXaa: 0.002 ± 0.002
Gln
3.984GlnAla: 3.984 ± 0.09
0.46GlnCys: 0.46 ± 0.033
1.938GlnAsp: 1.938 ± 0.062
3.314GlnGlu: 3.314 ± 0.086
1.417GlnPhe: 1.417 ± 0.054
2.93GlnGly: 2.93 ± 0.079
0.752GlnHis: 0.752 ± 0.036
2.899GlnIle: 2.899 ± 0.069
2.967GlnLys: 2.967 ± 0.07
5.805GlnLeu: 5.805 ± 0.14
1.913GlnMet: 1.913 ± 0.06
1.875GlnAsn: 1.875 ± 0.06
2.129GlnPro: 2.129 ± 0.066
3.588GlnGln: 3.588 ± 0.112
2.383GlnArg: 2.383 ± 0.078
2.425GlnSer: 2.425 ± 0.073
2.67GlnThr: 2.67 ± 0.075
3.092GlnVal: 3.092 ± 0.067
0.337GlnTrp: 0.337 ± 0.026
1.343GlnTyr: 1.343 ± 0.047
0.002GlnXaa: 0.002 ± 0.002
Arg
3.483ArgAla: 3.483 ± 0.091
0.984ArgCys: 0.984 ± 0.045
2.225ArgAsp: 2.225 ± 0.068
3.925ArgGlu: 3.925 ± 0.098
2.329ArgPhe: 2.329 ± 0.067
2.535ArgGly: 2.535 ± 0.065
0.984ArgHis: 0.984 ± 0.056
3.445ArgIle: 3.445 ± 0.078
2.749ArgLys: 2.749 ± 0.076
5.082ArgLeu: 5.082 ± 0.108
1.873ArgMet: 1.873 ± 0.056
1.606ArgAsn: 1.606 ± 0.053
1.612ArgPro: 1.612 ± 0.055
2.74ArgGln: 2.74 ± 0.096
2.926ArgArg: 2.926 ± 0.085
2.742ArgSer: 2.742 ± 0.067
2.391ArgThr: 2.391 ± 0.073
3.151ArgVal: 3.151 ± 0.077
0.586ArgTrp: 0.586 ± 0.036
2.044ArgTyr: 2.044 ± 0.059
0.002ArgXaa: 0.002 ± 0.002
Ser
4.931SerAla: 4.931 ± 0.096
1.181SerCys: 1.181 ± 0.052
3.198SerAsp: 3.198 ± 0.083
3.312SerGlu: 3.312 ± 0.089
3.065SerPhe: 3.065 ± 0.073
5.012SerGly: 5.012 ± 0.113
1.102SerHis: 1.102 ± 0.046
3.757SerIle: 3.757 ± 0.092
2.791SerLys: 2.791 ± 0.08
5.978SerLeu: 5.978 ± 0.136
1.778SerMet: 1.778 ± 0.058
2.066SerAsn: 2.066 ± 0.063
2.061SerPro: 2.061 ± 0.068
2.585SerGln: 2.585 ± 0.074
3.122SerArg: 3.122 ± 0.076
4.031SerSer: 4.031 ± 0.122
2.838SerThr: 2.838 ± 0.083
4.343SerVal: 4.343 ± 0.082
0.609SerTrp: 0.609 ± 0.036
2.21SerTyr: 2.21 ± 0.064
0.002SerXaa: 0.002 ± 0.002
Thr
4.846ThrAla: 4.846 ± 0.116
0.645ThrCys: 0.645 ± 0.036
2.897ThrAsp: 2.897 ± 0.085
3.261ThrGlu: 3.261 ± 0.085
2.061ThrPhe: 2.061 ± 0.065
4.293ThrGly: 4.293 ± 0.09
0.921ThrHis: 0.921 ± 0.045
3.501ThrIle: 3.501 ± 0.086
2.232ThrLys: 2.232 ± 0.065
5.207ThrLeu: 5.207 ± 0.087
1.329ThrMet: 1.329 ± 0.044
1.718ThrAsn: 1.718 ± 0.056
2.371ThrPro: 2.371 ± 0.064
2.113ThrGln: 2.113 ± 0.065
2.147ThrArg: 2.147 ± 0.057
2.787ThrSer: 2.787 ± 0.078
2.82ThrThr: 2.82 ± 0.087
4.381ThrVal: 4.381 ± 0.093
0.377ThrTrp: 0.377 ± 0.027
1.505ThrTyr: 1.505 ± 0.054
0.0ThrXaa: 0.0 ± 0.0
Val
5.253ValAla: 5.253 ± 0.124
1.424ValCys: 1.424 ± 0.06
4.094ValAsp: 4.094 ± 0.103
4.792ValGlu: 4.792 ± 0.098
2.746ValPhe: 2.746 ± 0.078
4.915ValGly: 4.915 ± 0.118
1.152ValHis: 1.152 ± 0.052
4.433ValIle: 4.433 ± 0.089
3.602ValLys: 3.602 ± 0.086
7.251ValLeu: 7.251 ± 0.129
2.061ValMet: 2.061 ± 0.055
2.446ValAsn: 2.446 ± 0.068
2.529ValPro: 2.529 ± 0.075
3.014ValGln: 3.014 ± 0.084
3.512ValArg: 3.512 ± 0.078
4.691ValSer: 4.691 ± 0.084
3.721ValThr: 3.721 ± 0.087
5.396ValVal: 5.396 ± 0.114
0.6ValTrp: 0.6 ± 0.036
2.49ValTyr: 2.49 ± 0.068
0.002ValXaa: 0.002 ± 0.002
Trp
0.631TrpAla: 0.631 ± 0.033
0.177TrpCys: 0.177 ± 0.019
0.498TrpAsp: 0.498 ± 0.03
0.703TrpGlu: 0.703 ± 0.037
0.375TrpPhe: 0.375 ± 0.026
0.658TrpGly: 0.658 ± 0.032
0.166TrpHis: 0.166 ± 0.017
0.526TrpIle: 0.526 ± 0.027
0.573TrpLys: 0.573 ± 0.037
0.925TrpLeu: 0.925 ± 0.042
0.362TrpMet: 0.362 ± 0.028
0.436TrpAsn: 0.436 ± 0.032
0.148TrpPro: 0.148 ± 0.018
0.525TrpGln: 0.525 ± 0.032
0.382TrpArg: 0.382 ± 0.028
0.458TrpSer: 0.458 ± 0.032
0.377TrpThr: 0.377 ± 0.031
0.617TrpVal: 0.617 ± 0.037
0.101TrpTrp: 0.101 ± 0.012
0.308TrpTyr: 0.308 ± 0.025
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.394TyrAla: 2.394 ± 0.071
0.622TyrCys: 0.622 ± 0.033
2.1TyrAsp: 2.1 ± 0.067
2.324TyrGlu: 2.324 ± 0.069
1.563TyrPhe: 1.563 ± 0.052
2.578TyrGly: 2.578 ± 0.063
0.874TyrHis: 0.874 ± 0.04
2.071TyrIle: 2.071 ± 0.052
1.394TyrLys: 1.394 ± 0.059
3.842TyrLeu: 3.842 ± 0.08
0.719TyrMet: 0.719 ± 0.036
1.453TyrAsn: 1.453 ± 0.067
1.514TyrPro: 1.514 ± 0.052
1.624TyrGln: 1.624 ± 0.053
2.05TyrArg: 2.05 ± 0.065
2.122TyrSer: 2.122 ± 0.064
2.088TyrThr: 2.088 ± 0.07
1.94TyrVal: 1.94 ± 0.068
0.344TyrTrp: 0.344 ± 0.024
1.478TyrTyr: 1.478 ± 0.071
0.0TyrXaa: 0.0 ± 0.0
Xaa
0.002XaaAla: 0.002 ± 0.002
0.0XaaCys: 0.0 ± 0.0
0.002XaaAsp: 0.002 ± 0.002
0.0XaaGlu: 0.0 ± 0.0
0.0XaaPhe: 0.0 ± 0.0
0.004XaaGly: 0.004 ± 0.003
0.0XaaHis: 0.0 ± 0.0
0.0XaaIle: 0.0 ± 0.0
0.002XaaLys: 0.002 ± 0.002
0.002XaaLeu: 0.002 ± 0.002
0.0XaaMet: 0.0 ± 0.0
0.0XaaAsn: 0.0 ± 0.0
0.0XaaPro: 0.0 ± 0.0
0.004XaaGln: 0.004 ± 0.002
0.0XaaArg: 0.0 ± 0.0
0.0XaaSer: 0.0 ± 0.0
0.002XaaThr: 0.002 ± 0.002
0.0XaaVal: 0.0 ± 0.0
0.0XaaTrp: 0.0 ± 0.0
0.0XaaTyr: 0.0 ± 0.0
0.018XaaXaa: 0.018 ± 0.007
Statistics based on 1970 proteins (554686 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