Amino acid dipepetide frequency for Clostridium sp. CAG:508

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
2.956AlaAla: 2.956 ± 0.106
0.622AlaCys: 0.622 ± 0.053
2.846AlaAsp: 2.846 ± 0.086
4.394AlaGlu: 4.394 ± 0.157
2.233AlaPhe: 2.233 ± 0.104
3.757AlaGly: 3.757 ± 0.107
0.836AlaHis: 0.836 ± 0.05
6.088AlaIle: 6.088 ± 0.156
6.047AlaLys: 6.047 ± 0.16
4.523AlaLeu: 4.523 ± 0.142
1.486AlaMet: 1.486 ± 0.073
3.204AlaAsn: 3.204 ± 0.113
1.326AlaPro: 1.326 ± 0.063
1.897AlaGln: 1.897 ± 0.078
2.133AlaArg: 2.133 ± 0.085
2.956AlaSer: 2.956 ± 0.097
3.326AlaThr: 3.326 ± 0.126
3.882AlaVal: 3.882 ± 0.107
0.355AlaTrp: 0.355 ± 0.039
2.051AlaTyr: 2.051 ± 0.082
0.0AlaXaa: 0.0 ± 0.0
Cys
0.562CysAla: 0.562 ± 0.041
0.173CysCys: 0.173 ± 0.026
0.559CysAsp: 0.559 ± 0.047
0.707CysGlu: 0.707 ± 0.052
0.496CysPhe: 0.496 ± 0.043
0.945CysGly: 0.945 ± 0.066
0.188CysHis: 0.188 ± 0.025
1.106CysIle: 1.106 ± 0.069
1.049CysLys: 1.049 ± 0.062
0.795CysLeu: 0.795 ± 0.047
0.251CysMet: 0.251 ± 0.027
0.682CysAsn: 0.682 ± 0.048
0.38CysPro: 0.38 ± 0.041
0.239CysGln: 0.239 ± 0.024
0.358CysArg: 0.358 ± 0.034
0.635CysSer: 0.635 ± 0.046
0.569CysThr: 0.569 ± 0.041
0.722CysVal: 0.722 ± 0.05
0.038CysTrp: 0.038 ± 0.012
0.471CysTyr: 0.471 ± 0.037
0.0CysXaa: 0.0 ± 0.0
Asp
2.522AspAla: 2.522 ± 0.094
0.534AspCys: 0.534 ± 0.039
2.507AspAsp: 2.507 ± 0.145
4.746AspGlu: 4.746 ± 0.141
2.306AspPhe: 2.306 ± 0.082
3.427AspGly: 3.427 ± 0.122
0.572AspHis: 0.572 ± 0.04
5.742AspIle: 5.742 ± 0.144
5.447AspLys: 5.447 ± 0.129
4.652AspLeu: 4.652 ± 0.124
1.363AspMet: 1.363 ± 0.076
3.289AspAsn: 3.289 ± 0.112
1.335AspPro: 1.335 ± 0.075
1.037AspGln: 1.037 ± 0.063
1.561AspArg: 1.561 ± 0.076
2.774AspSer: 2.774 ± 0.08
2.978AspThr: 2.978 ± 0.093
3.575AspVal: 3.575 ± 0.118
0.393AspTrp: 0.393 ± 0.033
2.535AspTyr: 2.535 ± 0.086
0.0AspXaa: 0.0 ± 0.0
Glu
4.687GluAla: 4.687 ± 0.126
0.628GluCys: 0.628 ± 0.05
4.124GluAsp: 4.124 ± 0.137
7.963GluGlu: 7.963 ± 0.211
2.956GluPhe: 2.956 ± 0.1
3.703GluGly: 3.703 ± 0.115
0.996GluHis: 0.996 ± 0.064
7.953GluIle: 7.953 ± 0.175
9.662GluLys: 9.662 ± 0.211
7.36GluLeu: 7.36 ± 0.171
2.117GluMet: 2.117 ± 0.095
6.392GluAsn: 6.392 ± 0.159
1.775GluPro: 1.775 ± 0.072
3.169GluGln: 3.169 ± 0.129
2.557GluArg: 2.557 ± 0.1
2.981GluSer: 2.981 ± 0.089
3.794GluThr: 3.794 ± 0.122
5.217GluVal: 5.217 ± 0.14
0.371GluTrp: 0.371 ± 0.036
3.546GluTyr: 3.546 ± 0.1
0.0GluXaa: 0.0 ± 0.0
Phe
2.472PheAla: 2.472 ± 0.106
0.487PheCys: 0.487 ± 0.04
2.365PheAsp: 2.365 ± 0.109
3.11PheGlu: 3.11 ± 0.116
1.561PhePhe: 1.561 ± 0.085
2.365PheGly: 2.365 ± 0.091
0.449PheHis: 0.449 ± 0.045
3.581PheIle: 3.581 ± 0.129
3.282PheLys: 3.282 ± 0.106
3.33PheLeu: 3.33 ± 0.12
0.949PheMet: 0.949 ± 0.052
2.309PheAsn: 2.309 ± 0.105
1.087PhePro: 1.087 ± 0.058
0.748PheGln: 0.748 ± 0.056
1.106PheArg: 1.106 ± 0.053
2.547PheSer: 2.547 ± 0.099
2.057PheThr: 2.057 ± 0.067
2.447PheVal: 2.447 ± 0.087
0.314PheTrp: 0.314 ± 0.029
1.555PheTyr: 1.555 ± 0.072
0.0PheXaa: 0.0 ± 0.0
Gly
3.43GlyAla: 3.43 ± 0.127
0.707GlyCys: 0.707 ± 0.057
2.865GlyAsp: 2.865 ± 0.102
4.077GlyGlu: 4.077 ± 0.129
2.488GlyPhe: 2.488 ± 0.1
3.512GlyGly: 3.512 ± 0.132
0.989GlyHis: 0.989 ± 0.063
6.226GlyIle: 6.226 ± 0.168
5.934GlyLys: 5.934 ± 0.126
4.743GlyLeu: 4.743 ± 0.135
1.593GlyMet: 1.593 ± 0.08
3.436GlyAsn: 3.436 ± 0.111
0.989GlyPro: 0.989 ± 0.057
1.498GlyGln: 1.498 ± 0.071
2.233GlyArg: 2.233 ± 0.098
2.858GlySer: 2.858 ± 0.099
3.864GlyThr: 3.864 ± 0.114
4.03GlyVal: 4.03 ± 0.12
0.452GlyTrp: 0.452 ± 0.037
2.915GlyTyr: 2.915 ± 0.101
0.0GlyXaa: 0.0 ± 0.0
His
0.672HisAla: 0.672 ± 0.042
0.214HisCys: 0.214 ± 0.026
0.631HisAsp: 0.631 ± 0.04
0.77HisGlu: 0.77 ± 0.052
0.537HisPhe: 0.537 ± 0.048
0.867HisGly: 0.867 ± 0.054
0.302HisHis: 0.302 ± 0.03
1.313HisIle: 1.313 ± 0.068
0.945HisLys: 0.945 ± 0.055
1.112HisLeu: 1.112 ± 0.052
0.327HisMet: 0.327 ± 0.029
0.773HisAsn: 0.773 ± 0.046
0.622HisPro: 0.622 ± 0.055
0.352HisGln: 0.352 ± 0.035
0.471HisArg: 0.471 ± 0.039
0.776HisSer: 0.776 ± 0.054
0.656HisThr: 0.656 ± 0.049
0.697HisVal: 0.697 ± 0.05
0.069HisTrp: 0.069 ± 0.016
0.553HisTyr: 0.553 ± 0.045
0.0HisXaa: 0.0 ± 0.0
Ile
6.276IleAla: 6.276 ± 0.176
1.269IleCys: 1.269 ± 0.063
5.645IleAsp: 5.645 ± 0.153
7.545IleGlu: 7.545 ± 0.175
3.71IlePhe: 3.71 ± 0.122
5.714IleGly: 5.714 ± 0.136
1.143IleHis: 1.143 ± 0.063
9.213IleIle: 9.213 ± 0.248
8.362IleLys: 8.362 ± 0.179
8.968IleLeu: 8.968 ± 0.24
2.145IleMet: 2.145 ± 0.088
5.415IleAsn: 5.415 ± 0.132
3.367IlePro: 3.367 ± 0.107
2.88IleGln: 2.88 ± 0.093
2.909IleArg: 2.909 ± 0.105
6.502IleSer: 6.502 ± 0.164
5.758IleThr: 5.758 ± 0.153
6.153IleVal: 6.153 ± 0.155
0.55IleTrp: 0.55 ± 0.045
3.926IleTyr: 3.926 ± 0.115
0.0IleXaa: 0.0 ± 0.0
Lys
5.271LysAla: 5.271 ± 0.145
0.917LysCys: 0.917 ± 0.047
5.362LysAsp: 5.362 ± 0.122
9.558LysGlu: 9.558 ± 0.193
3.05LysPhe: 3.05 ± 0.097
4.53LysGly: 4.53 ± 0.12
1.109LysHis: 1.109 ± 0.062
9.188LysIle: 9.188 ± 0.182
9.141LysLys: 9.141 ± 0.207
8.101LysLeu: 8.101 ± 0.147
2.805LysMet: 2.805 ± 0.104
6.6LysAsn: 6.6 ± 0.174
2.384LysPro: 2.384 ± 0.088
4.215LysGln: 4.215 ± 0.157
3.198LysArg: 3.198 ± 0.103
4.401LysSer: 4.401 ± 0.122
5.378LysThr: 5.378 ± 0.144
6.163LysVal: 6.163 ± 0.147
0.547LysTrp: 0.547 ± 0.044
4.806LysTyr: 4.806 ± 0.149
0.0LysXaa: 0.0 ± 0.0
Leu
5.481LeuAla: 5.481 ± 0.136
1.015LeuCys: 1.015 ± 0.062
4.935LeuAsp: 4.935 ± 0.119
6.958LeuGlu: 6.958 ± 0.188
3.147LeuPhe: 3.147 ± 0.122
5.359LeuGly: 5.359 ± 0.135
1.074LeuHis: 1.074 ± 0.053
7.049LeuIle: 7.049 ± 0.169
8.315LeuLys: 8.315 ± 0.153
7.539LeuLeu: 7.539 ± 0.19
1.834LeuMet: 1.834 ± 0.078
5.466LeuAsn: 5.466 ± 0.155
2.893LeuPro: 2.893 ± 0.098
2.343LeuGln: 2.343 ± 0.095
2.78LeuArg: 2.78 ± 0.107
5.155LeuSer: 5.155 ± 0.113
4.583LeuThr: 4.583 ± 0.114
5.654LeuVal: 5.654 ± 0.148
0.506LeuTrp: 0.506 ± 0.046
3.232LeuTyr: 3.232 ± 0.107
0.0LeuXaa: 0.0 ± 0.0
Met
1.671MetAla: 1.671 ± 0.077
0.245MetCys: 0.245 ± 0.025
1.238MetAsp: 1.238 ± 0.066
1.991MetGlu: 1.991 ± 0.079
0.92MetPhe: 0.92 ± 0.052
1.432MetGly: 1.432 ± 0.07
0.273MetHis: 0.273 ± 0.028
1.941MetIle: 1.941 ± 0.083
2.595MetLys: 2.595 ± 0.091
2.252MetLeu: 2.252 ± 0.078
0.543MetMet: 0.543 ± 0.038
1.514MetAsn: 1.514 ± 0.072
1.055MetPro: 1.055 ± 0.055
1.065MetGln: 1.065 ± 0.062
0.757MetArg: 0.757 ± 0.051
1.432MetSer: 1.432 ± 0.077
1.256MetThr: 1.256 ± 0.069
1.404MetVal: 1.404 ± 0.072
0.138MetTrp: 0.138 ± 0.023
0.999MetTyr: 0.999 ± 0.053
0.0MetXaa: 0.0 ± 0.0
Asn
3.147AsnAla: 3.147 ± 0.104
0.748AsnCys: 0.748 ± 0.053
3.047AsnAsp: 3.047 ± 0.114
4.954AsnGlu: 4.954 ± 0.138
2.494AsnPhe: 2.494 ± 0.103
3.986AsnGly: 3.986 ± 0.136
0.66AsnHis: 0.66 ± 0.053
6.709AsnIle: 6.709 ± 0.176
6.245AsnLys: 6.245 ± 0.158
5.676AsnLeu: 5.676 ± 0.147
1.665AsnMet: 1.665 ± 0.069
4.731AsnAsn: 4.731 ± 0.169
2.004AsnPro: 2.004 ± 0.076
2.089AsnGln: 2.089 ± 0.088
1.91AsnArg: 1.91 ± 0.096
3.769AsnSer: 3.769 ± 0.119
3.735AsnThr: 3.735 ± 0.138
4.055AsnVal: 4.055 ± 0.14
0.39AsnTrp: 0.39 ± 0.036
2.789AsnTyr: 2.789 ± 0.099
0.0AsnXaa: 0.0 ± 0.0
Pro
1.448ProAla: 1.448 ± 0.062
0.364ProCys: 0.364 ± 0.039
1.624ProAsp: 1.624 ± 0.066
2.956ProGlu: 2.956 ± 0.103
1.212ProPhe: 1.212 ± 0.071
1.514ProGly: 1.514 ± 0.072
0.411ProHis: 0.411 ± 0.036
2.777ProIle: 2.777 ± 0.093
2.372ProLys: 2.372 ± 0.092
2.023ProLeu: 2.023 ± 0.089
0.682ProMet: 0.682 ± 0.044
1.8ProAsn: 1.8 ± 0.071
0.512ProPro: 0.512 ± 0.043
0.81ProGln: 0.81 ± 0.055
0.807ProArg: 0.807 ± 0.046
1.492ProSer: 1.492 ± 0.075
1.734ProThr: 1.734 ± 0.074
1.991ProVal: 1.991 ± 0.089
0.173ProTrp: 0.173 ± 0.026
1.241ProTyr: 1.241 ± 0.064
0.0ProXaa: 0.0 ± 0.0
Gln
1.998GlnAla: 1.998 ± 0.088
0.217GlnCys: 0.217 ± 0.027
1.746GlnAsp: 1.746 ± 0.068
2.909GlnGlu: 2.909 ± 0.115
1.04GlnPhe: 1.04 ± 0.055
1.652GlnGly: 1.652 ± 0.07
0.276GlnHis: 0.276 ± 0.028
3.27GlnIle: 3.27 ± 0.099
3.304GlnLys: 3.304 ± 0.097
2.262GlnLeu: 2.262 ± 0.078
0.807GlnMet: 0.807 ± 0.051
2.422GlnAsn: 2.422 ± 0.087
0.609GlnPro: 0.609 ± 0.041
0.873GlnGln: 0.873 ± 0.058
1.059GlnArg: 1.059 ± 0.062
1.3GlnSer: 1.3 ± 0.063
1.891GlnThr: 1.891 ± 0.074
1.966GlnVal: 1.966 ± 0.084
0.166GlnTrp: 0.166 ± 0.021
1.297GlnTyr: 1.297 ± 0.069
0.0GlnXaa: 0.0 ± 0.0
Arg
1.828ArgAla: 1.828 ± 0.071
0.324ArgCys: 0.324 ± 0.034
1.753ArgAsp: 1.753 ± 0.086
2.667ArgGlu: 2.667 ± 0.098
1.247ArgPhe: 1.247 ± 0.07
1.819ArgGly: 1.819 ± 0.074
0.405ArgHis: 0.405 ± 0.035
3.025ArgIle: 3.025 ± 0.097
3.377ArgLys: 3.377 ± 0.099
2.657ArgLeu: 2.657 ± 0.105
0.895ArgMet: 0.895 ± 0.056
2.039ArgAsn: 2.039 ± 0.075
0.977ArgPro: 0.977 ± 0.064
1.096ArgGln: 1.096 ± 0.059
1.467ArgArg: 1.467 ± 0.068
1.457ArgSer: 1.457 ± 0.061
1.838ArgThr: 1.838 ± 0.078
2.196ArgVal: 2.196 ± 0.099
0.214ArgTrp: 0.214 ± 0.026
1.467ArgTyr: 1.467 ± 0.071
0.0ArgXaa: 0.0 ± 0.0
Ser
2.651SerAla: 2.651 ± 0.098
0.512SerCys: 0.512 ± 0.048
2.708SerAsp: 2.708 ± 0.097
3.747SerGlu: 3.747 ± 0.108
2.412SerPhe: 2.412 ± 0.103
3.754SerGly: 3.754 ± 0.118
0.682SerHis: 0.682 ± 0.05
5.472SerIle: 5.472 ± 0.163
5.478SerLys: 5.478 ± 0.136
4.498SerLeu: 4.498 ± 0.137
1.319SerMet: 1.319 ± 0.066
3.908SerAsn: 3.908 ± 0.135
1.316SerPro: 1.316 ± 0.065
1.677SerGln: 1.677 ± 0.07
1.872SerArg: 1.872 ± 0.075
3.76SerSer: 3.76 ± 0.144
3.22SerThr: 3.22 ± 0.102
3.289SerVal: 3.289 ± 0.106
0.38SerTrp: 0.38 ± 0.036
2.353SerTyr: 2.353 ± 0.096
0.003SerXaa: 0.003 ± 0.003
Thr
3.298ThrAla: 3.298 ± 0.116
0.49ThrCys: 0.49 ± 0.039
3.107ThrAsp: 3.107 ± 0.118
4.112ThrGlu: 4.112 ± 0.132
2.079ThrPhe: 2.079 ± 0.083
3.898ThrGly: 3.898 ± 0.128
0.795ThrHis: 0.795 ± 0.05
5.425ThrIle: 5.425 ± 0.142
5.01ThrLys: 5.01 ± 0.152
4.812ThrLeu: 4.812 ± 0.115
1.247ThrMet: 1.247 ± 0.064
3.6ThrAsn: 3.6 ± 0.126
2.026ThrPro: 2.026 ± 0.08
1.624ThrGln: 1.624 ± 0.077
1.822ThrArg: 1.822 ± 0.076
3.414ThrSer: 3.414 ± 0.104
3.71ThrThr: 3.71 ± 0.149
4.087ThrVal: 4.087 ± 0.142
0.411ThrTrp: 0.411 ± 0.036
2.434ThrTyr: 2.434 ± 0.116
0.0ThrXaa: 0.0 ± 0.0
Val
3.983ValAla: 3.983 ± 0.115
0.911ValCys: 0.911 ± 0.063
3.424ValAsp: 3.424 ± 0.108
5.092ValGlu: 5.092 ± 0.148
2.208ValPhe: 2.208 ± 0.077
3.801ValGly: 3.801 ± 0.103
0.81ValHis: 0.81 ± 0.048
6.518ValIle: 6.518 ± 0.143
5.88ValLys: 5.88 ± 0.142
5.742ValLeu: 5.742 ± 0.125
1.454ValMet: 1.454 ± 0.076
3.791ValAsn: 3.791 ± 0.109
1.979ValPro: 1.979 ± 0.091
1.831ValGln: 1.831 ± 0.07
2.007ValArg: 2.007 ± 0.083
3.926ValSer: 3.926 ± 0.118
3.908ValThr: 3.908 ± 0.151
4.486ValVal: 4.486 ± 0.126
0.355ValTrp: 0.355 ± 0.036
2.676ValTyr: 2.676 ± 0.092
0.0ValXaa: 0.0 ± 0.0
Trp
0.355TrpAla: 0.355 ± 0.036
0.057TrpCys: 0.057 ± 0.015
0.298TrpAsp: 0.298 ± 0.033
0.408TrpGlu: 0.408 ± 0.038
0.267TrpPhe: 0.267 ± 0.03
0.377TrpGly: 0.377 ± 0.034
0.129TrpHis: 0.129 ± 0.02
0.628TrpIle: 0.628 ± 0.048
0.506TrpLys: 0.506 ± 0.041
0.565TrpLeu: 0.565 ± 0.05
0.182TrpMet: 0.182 ± 0.026
0.443TrpAsn: 0.443 ± 0.04
0.135TrpPro: 0.135 ± 0.023
0.273TrpGln: 0.273 ± 0.031
0.251TrpArg: 0.251 ± 0.027
0.298TrpSer: 0.298 ± 0.031
0.336TrpThr: 0.336 ± 0.037
0.305TrpVal: 0.305 ± 0.026
0.079TrpTrp: 0.079 ± 0.019
0.305TrpTyr: 0.305 ± 0.034
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.208TyrAla: 2.208 ± 0.079
0.493TyrCys: 0.493 ± 0.039
2.51TyrAsp: 2.51 ± 0.103
3.292TyrGlu: 3.292 ± 0.115
1.756TyrPhe: 1.756 ± 0.086
2.428TyrGly: 2.428 ± 0.086
0.559TyrHis: 0.559 ± 0.039
4.228TyrIle: 4.228 ± 0.123
3.769TyrLys: 3.769 ± 0.121
3.707TyrLeu: 3.707 ± 0.123
1.055TyrMet: 1.055 ± 0.058
2.99TyrAsn: 2.99 ± 0.094
1.172TyrPro: 1.172 ± 0.069
1.348TyrGln: 1.348 ± 0.067
1.489TyrArg: 1.489 ± 0.078
2.576TyrSer: 2.576 ± 0.109
2.811TyrThr: 2.811 ± 0.114
2.463TyrVal: 2.463 ± 0.092
0.298TyrTrp: 0.298 ± 0.032
1.973TyrTyr: 1.973 ± 0.1
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
0.003XaaLys: 0.003 ± 0.003
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
0.003XaaXaa: 0.003 ± 0.003
Statistics based on 1078 proteins (318357 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