Amino acid dipepetide frequency for Clostridium sp. CAG:710

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
2.04AlaAla: 2.04 ± 0.102
0.524AlaCys: 0.524 ± 0.042
1.962AlaAsp: 1.962 ± 0.098
2.362AlaGlu: 2.362 ± 0.093
2.081AlaPhe: 2.081 ± 0.096
2.489AlaGly: 2.489 ± 0.105
0.68AlaHis: 0.68 ± 0.051
4.445AlaIle: 4.445 ± 0.116
4.185AlaLys: 4.185 ± 0.132
4.749AlaLeu: 4.749 ± 0.125
0.958AlaMet: 0.958 ± 0.055
2.443AlaAsn: 2.443 ± 0.1
1.053AlaPro: 1.053 ± 0.069
1.004AlaGln: 1.004 ± 0.063
1.771AlaArg: 1.771 ± 0.076
3.496AlaSer: 3.496 ± 0.112
2.865AlaThr: 2.865 ± 0.108
2.813AlaVal: 2.813 ± 0.101
0.266AlaTrp: 0.266 ± 0.03
2.035AlaTyr: 2.035 ± 0.076
0.0AlaXaa: 0.0 ± 0.0
Cys
0.492CysAla: 0.492 ± 0.04
0.223CysCys: 0.223 ± 0.027
0.706CysAsp: 0.706 ± 0.053
0.683CysGlu: 0.683 ± 0.047
0.501CysPhe: 0.501 ± 0.038
0.888CysGly: 0.888 ± 0.063
0.168CysHis: 0.168 ± 0.022
1.007CysIle: 1.007 ± 0.054
0.972CysLys: 0.972 ± 0.05
0.825CysLeu: 0.825 ± 0.045
0.208CysMet: 0.208 ± 0.025
0.738CysAsn: 0.738 ± 0.046
0.431CysPro: 0.431 ± 0.039
0.203CysGln: 0.203 ± 0.026
0.292CysArg: 0.292 ± 0.028
0.767CysSer: 0.767 ± 0.053
0.454CysThr: 0.454 ± 0.035
0.538CysVal: 0.538 ± 0.039
0.064CysTrp: 0.064 ± 0.014
0.55CysTyr: 0.55 ± 0.044
0.0CysXaa: 0.0 ± 0.0
Asp
2.616AspAla: 2.616 ± 0.086
0.506AspCys: 0.506 ± 0.04
3.641AspAsp: 3.641 ± 0.125
4.9AspGlu: 4.9 ± 0.151
2.868AspPhe: 2.868 ± 0.11
3.299AspGly: 3.299 ± 0.099
0.527AspHis: 0.527 ± 0.038
6.497AspIle: 6.497 ± 0.151
6.711AspLys: 6.711 ± 0.16
5.339AspLeu: 5.339 ± 0.131
1.508AspMet: 1.508 ± 0.071
4.512AspAsn: 4.512 ± 0.106
1.354AspPro: 1.354 ± 0.063
0.778AspGln: 0.778 ± 0.049
1.907AspArg: 1.907 ± 0.072
3.782AspSer: 3.782 ± 0.115
3.409AspThr: 3.409 ± 0.104
3.887AspVal: 3.887 ± 0.097
0.292AspTrp: 0.292 ± 0.034
3.551AspTyr: 3.551 ± 0.098
0.0AspXaa: 0.0 ± 0.0
Glu
3.62GluAla: 3.62 ± 0.115
0.695GluCys: 0.695 ± 0.049
4.292GluAsp: 4.292 ± 0.138
7.362GluGlu: 7.362 ± 0.194
3.03GluPhe: 3.03 ± 0.089
2.984GluGly: 2.984 ± 0.107
0.886GluHis: 0.886 ± 0.055
6.951GluIle: 6.951 ± 0.147
8.207GluLys: 8.207 ± 0.189
7.099GluLeu: 7.099 ± 0.148
1.765GluMet: 1.765 ± 0.067
4.83GluAsn: 4.83 ± 0.13
1.215GluPro: 1.215 ± 0.053
1.641GluGln: 1.641 ± 0.084
2.518GluArg: 2.518 ± 0.091
3.513GluSer: 3.513 ± 0.097
2.882GluThr: 2.882 ± 0.087
4.856GluVal: 4.856 ± 0.109
0.379GluTrp: 0.379 ± 0.035
4.072GluTyr: 4.072 ± 0.112
0.0GluXaa: 0.0 ± 0.0
Phe
1.916PheAla: 1.916 ± 0.08
0.48PheCys: 0.48 ± 0.039
3.256PheAsp: 3.256 ± 0.108
2.642PheGlu: 2.642 ± 0.089
1.846PhePhe: 1.846 ± 0.085
2.376PheGly: 2.376 ± 0.097
0.408PheHis: 0.408 ± 0.033
4.321PheIle: 4.321 ± 0.142
3.774PheLys: 3.774 ± 0.11
3.84PheLeu: 3.84 ± 0.135
1.036PheMet: 1.036 ± 0.059
3.244PheAsn: 3.244 ± 0.108
1.062PhePro: 1.062 ± 0.05
0.752PheGln: 0.752 ± 0.051
1.317PheArg: 1.317 ± 0.071
3.094PheSer: 3.094 ± 0.086
2.37PheThr: 2.37 ± 0.09
2.573PheVal: 2.573 ± 0.101
0.266PheTrp: 0.266 ± 0.028
2.202PheTyr: 2.202 ± 0.1
0.0PheXaa: 0.0 ± 0.0
Gly
2.55GlyAla: 2.55 ± 0.108
0.787GlyCys: 0.787 ± 0.051
2.877GlyAsp: 2.877 ± 0.11
3.395GlyGlu: 3.395 ± 0.092
2.521GlyPhe: 2.521 ± 0.098
2.972GlyGly: 2.972 ± 0.127
0.88GlyHis: 0.88 ± 0.056
5.6GlyIle: 5.6 ± 0.135
5.212GlyLys: 5.212 ± 0.146
4.231GlyLeu: 4.231 ± 0.131
1.409GlyMet: 1.409 ± 0.065
3.172GlyAsn: 3.172 ± 0.104
0.935GlyPro: 0.935 ± 0.051
0.969GlyGln: 0.969 ± 0.062
1.939GlyArg: 1.939 ± 0.101
3.143GlySer: 3.143 ± 0.102
3.094GlyThr: 3.094 ± 0.111
3.557GlyVal: 3.557 ± 0.109
0.284GlyTrp: 0.284 ± 0.031
3.23GlyTyr: 3.23 ± 0.113
0.0GlyXaa: 0.0 ± 0.0
His
0.666HisAla: 0.666 ± 0.047
0.153HisCys: 0.153 ± 0.023
0.657HisAsp: 0.657 ± 0.042
0.831HisGlu: 0.831 ± 0.044
0.561HisPhe: 0.561 ± 0.039
0.816HisGly: 0.816 ± 0.051
0.214HisHis: 0.214 ± 0.024
1.21HisIle: 1.21 ± 0.062
1.051HisLys: 1.051 ± 0.059
1.019HisLeu: 1.019 ± 0.057
0.266HisMet: 0.266 ± 0.027
0.831HisAsn: 0.831 ± 0.054
0.533HisPro: 0.533 ± 0.047
0.295HisGln: 0.295 ± 0.03
0.443HisArg: 0.443 ± 0.036
0.735HisSer: 0.735 ± 0.05
0.697HisThr: 0.697 ± 0.048
0.654HisVal: 0.654 ± 0.038
0.043HisTrp: 0.043 ± 0.011
0.57HisTyr: 0.57 ± 0.04
0.0HisXaa: 0.0 ± 0.0
Ile
4.506IleAla: 4.506 ± 0.113
1.088IleCys: 1.088 ± 0.063
6.891IleAsp: 6.891 ± 0.162
6.517IleGlu: 6.517 ± 0.154
4.309IlePhe: 4.309 ± 0.142
5.004IleGly: 5.004 ± 0.111
1.062IleHis: 1.062 ± 0.06
9.672IleIle: 9.672 ± 0.215
10.068IleLys: 10.068 ± 0.195
8.743IleLeu: 8.743 ± 0.216
2.127IleMet: 2.127 ± 0.073
7.472IleAsn: 7.472 ± 0.164
3.03IlePro: 3.03 ± 0.097
1.612IleGln: 1.612 ± 0.069
3.117IleArg: 3.117 ± 0.09
7.001IleSer: 7.001 ± 0.15
5.736IleThr: 5.736 ± 0.136
6.075IleVal: 6.075 ± 0.133
0.443IleTrp: 0.443 ± 0.039
4.431IleTyr: 4.431 ± 0.134
0.0IleXaa: 0.0 ± 0.0
Lys
4.17LysAla: 4.17 ± 0.131
0.978LysCys: 0.978 ± 0.054
6.604LysAsp: 6.604 ± 0.144
9.796LysGlu: 9.796 ± 0.21
3.325LysPhe: 3.325 ± 0.097
4.451LysGly: 4.451 ± 0.121
1.149LysHis: 1.149 ± 0.061
9.498LysIle: 9.498 ± 0.158
10.65LysLys: 10.65 ± 0.203
8.407LysLeu: 8.407 ± 0.159
2.735LysMet: 2.735 ± 0.083
7.681LysAsn: 7.681 ± 0.169
1.997LysPro: 1.997 ± 0.087
2.315LysGln: 2.315 ± 0.092
3.641LysArg: 3.641 ± 0.121
5.852LysSer: 5.852 ± 0.119
5.36LysThr: 5.36 ± 0.14
6.283LysVal: 6.283 ± 0.155
0.631LysTrp: 0.631 ± 0.048
5.91LysTyr: 5.91 ± 0.141
0.006LysXaa: 0.006 ± 0.004
Leu
3.93LeuAla: 3.93 ± 0.1
0.897LeuCys: 0.897 ± 0.047
5.996LeuAsp: 5.996 ± 0.138
6.645LeuGlu: 6.645 ± 0.157
4.057LeuPhe: 4.057 ± 0.131
4.81LeuGly: 4.81 ± 0.128
1.053LeuHis: 1.053 ± 0.05
8.5LeuIle: 8.5 ± 0.182
8.812LeuLys: 8.812 ± 0.145
8.401LeuLeu: 8.401 ± 0.183
1.98LeuMet: 1.98 ± 0.081
6.474LeuAsn: 6.474 ± 0.152
2.443LeuPro: 2.443 ± 0.079
1.6LeuGln: 1.6 ± 0.062
2.706LeuArg: 2.706 ± 0.097
6.601LeuSer: 6.601 ± 0.148
5.305LeuThr: 5.305 ± 0.136
5.368LeuVal: 5.368 ± 0.137
0.405LeuTrp: 0.405 ± 0.038
3.846LeuTyr: 3.846 ± 0.125
0.0LeuXaa: 0.0 ± 0.0
Met
1.282MetAla: 1.282 ± 0.058
0.229MetCys: 0.229 ± 0.025
1.485MetAsp: 1.485 ± 0.063
1.545MetGlu: 1.545 ± 0.068
1.163MetPhe: 1.163 ± 0.065
1.311MetGly: 1.311 ± 0.07
0.304MetHis: 0.304 ± 0.027
1.985MetIle: 1.985 ± 0.07
2.596MetLys: 2.596 ± 0.087
2.147MetLeu: 2.147 ± 0.074
0.564MetMet: 0.564 ± 0.038
1.664MetAsn: 1.664 ± 0.064
0.761MetPro: 0.761 ± 0.046
0.561MetGln: 0.561 ± 0.041
0.79MetArg: 0.79 ± 0.047
1.415MetSer: 1.415 ± 0.062
1.077MetThr: 1.077 ± 0.053
1.236MetVal: 1.236 ± 0.059
0.139MetTrp: 0.139 ± 0.022
1.085MetTyr: 1.085 ± 0.06
0.0MetXaa: 0.0 ± 0.0
Asn
2.935AsnAla: 2.935 ± 0.093
0.735AsnCys: 0.735 ± 0.047
4.159AsnAsp: 4.159 ± 0.123
5.125AsnGlu: 5.125 ± 0.117
2.683AsnPhe: 2.683 ± 0.094
3.756AsnGly: 3.756 ± 0.102
0.79AsnHis: 0.79 ± 0.043
7.718AsnIle: 7.718 ± 0.157
8.294AsnLys: 8.294 ± 0.166
5.736AsnLeu: 5.736 ± 0.149
1.852AsnMet: 1.852 ± 0.076
6.523AsnAsn: 6.523 ± 0.209
2.003AsnPro: 2.003 ± 0.076
1.47AsnGln: 1.47 ± 0.072
2.136AsnArg: 2.136 ± 0.082
4.335AsnSer: 4.335 ± 0.148
3.788AsnThr: 3.788 ± 0.122
4.193AsnVal: 4.193 ± 0.115
0.394AsnTrp: 0.394 ± 0.03
4.014AsnTyr: 4.014 ± 0.12
0.0AsnXaa: 0.0 ± 0.0
Pro
1.126ProAla: 1.126 ± 0.058
0.214ProCys: 0.214 ± 0.027
1.438ProAsp: 1.438 ± 0.068
1.679ProGlu: 1.679 ± 0.069
1.279ProPhe: 1.279 ± 0.062
1.294ProGly: 1.294 ± 0.069
0.385ProHis: 0.385 ± 0.035
2.451ProIle: 2.451 ± 0.09
2.254ProLys: 2.254 ± 0.092
2.026ProLeu: 2.026 ± 0.073
0.53ProMet: 0.53 ± 0.038
1.762ProAsn: 1.762 ± 0.068
0.521ProPro: 0.521 ± 0.036
0.48ProGln: 0.48 ± 0.038
0.773ProArg: 0.773 ± 0.045
1.922ProSer: 1.922 ± 0.081
1.661ProThr: 1.661 ± 0.083
1.786ProVal: 1.786 ± 0.084
0.156ProTrp: 0.156 ± 0.021
1.268ProTyr: 1.268 ± 0.058
0.0ProXaa: 0.0 ± 0.0
Gln
1.129GlnAla: 1.129 ± 0.061
0.165GlnCys: 0.165 ± 0.024
1.033GlnAsp: 1.033 ± 0.062
1.589GlnGlu: 1.589 ± 0.076
0.738GlnPhe: 0.738 ± 0.042
0.897GlnGly: 0.897 ± 0.056
0.203GlnHis: 0.203 ± 0.023
1.994GlnIle: 1.994 ± 0.08
2.11GlnLys: 2.11 ± 0.079
1.722GlnLeu: 1.722 ± 0.072
0.544GlnMet: 0.544 ± 0.036
1.519GlnAsn: 1.519 ± 0.077
0.431GlnPro: 0.431 ± 0.039
0.495GlnGln: 0.495 ± 0.039
0.747GlnArg: 0.747 ± 0.051
1.1GlnSer: 1.1 ± 0.054
1.175GlnThr: 1.175 ± 0.061
1.262GlnVal: 1.262 ± 0.066
0.096GlnTrp: 0.096 ± 0.017
0.906GlnTyr: 0.906 ± 0.047
0.0GlnXaa: 0.0 ± 0.0
Arg
1.372ArgAla: 1.372 ± 0.064
0.368ArgCys: 0.368 ± 0.035
1.991ArgAsp: 1.991 ± 0.07
2.772ArgGlu: 2.772 ± 0.093
1.372ArgPhe: 1.372 ± 0.059
1.867ArgGly: 1.867 ± 0.078
0.469ArgHis: 0.469 ± 0.044
3.201ArgIle: 3.201 ± 0.086
3.207ArgLys: 3.207 ± 0.117
3.018ArgLeu: 3.018 ± 0.11
0.915ArgMet: 0.915 ± 0.052
2.191ArgAsn: 2.191 ± 0.077
0.831ArgPro: 0.831 ± 0.054
0.799ArgGln: 0.799 ± 0.05
1.288ArgArg: 1.288 ± 0.065
1.719ArgSer: 1.719 ± 0.071
1.673ArgThr: 1.673 ± 0.067
2.223ArgVal: 2.223 ± 0.086
0.211ArgTrp: 0.211 ± 0.026
1.511ArgTyr: 1.511 ± 0.067
0.003ArgXaa: 0.003 ± 0.003
Ser
2.402SerAla: 2.402 ± 0.087
0.729SerCys: 0.729 ± 0.049
3.881SerAsp: 3.881 ± 0.108
3.936SerGlu: 3.936 ± 0.105
3.024SerPhe: 3.024 ± 0.094
3.814SerGly: 3.814 ± 0.12
0.854SerHis: 0.854 ± 0.044
6.448SerIle: 6.448 ± 0.158
6.98SerLys: 6.98 ± 0.163
6.031SerLeu: 6.031 ± 0.135
1.412SerMet: 1.412 ± 0.061
5.01SerAsn: 5.01 ± 0.139
1.424SerPro: 1.424 ± 0.068
1.311SerGln: 1.311 ± 0.063
2.182SerArg: 2.182 ± 0.074
4.986SerSer: 4.986 ± 0.147
3.45SerThr: 3.45 ± 0.119
3.742SerVal: 3.742 ± 0.107
0.362SerTrp: 0.362 ± 0.031
3.293SerTyr: 3.293 ± 0.093
0.0SerXaa: 0.0 ± 0.0
Thr
2.257ThrAla: 2.257 ± 0.1
0.593ThrCys: 0.593 ± 0.046
3.351ThrAsp: 3.351 ± 0.103
3.097ThrGlu: 3.097 ± 0.1
2.318ThrPhe: 2.318 ± 0.096
3.204ThrGly: 3.204 ± 0.121
0.738ThrHis: 0.738 ± 0.038
5.646ThrIle: 5.646 ± 0.13
5.192ThrLys: 5.192 ± 0.134
5.287ThrLeu: 5.287 ± 0.124
1.051ThrMet: 1.051 ± 0.051
3.95ThrAsn: 3.95 ± 0.125
1.829ThrPro: 1.829 ± 0.098
1.065ThrGln: 1.065 ± 0.066
1.664ThrArg: 1.664 ± 0.073
4.167ThrSer: 4.167 ± 0.141
3.406ThrThr: 3.406 ± 0.133
3.186ThrVal: 3.186 ± 0.105
0.33ThrTrp: 0.33 ± 0.028
2.584ThrTyr: 2.584 ± 0.099
0.0ThrXaa: 0.0 ± 0.0
Val
2.801ValAla: 2.801 ± 0.095
0.689ValCys: 0.689 ± 0.044
3.997ValAsp: 3.997 ± 0.104
4.413ValGlu: 4.413 ± 0.133
2.599ValPhe: 2.599 ± 0.088
3.649ValGly: 3.649 ± 0.117
0.724ValHis: 0.724 ± 0.05
6.413ValIle: 6.413 ± 0.14
5.753ValLys: 5.753 ± 0.147
5.872ValLeu: 5.872 ± 0.119
1.346ValMet: 1.346 ± 0.064
4.0ValAsn: 4.0 ± 0.104
1.716ValPro: 1.716 ± 0.074
1.14ValGln: 1.14 ± 0.059
1.922ValArg: 1.922 ± 0.072
4.15ValSer: 4.15 ± 0.108
3.484ValThr: 3.484 ± 0.116
4.706ValVal: 4.706 ± 0.129
0.295ValTrp: 0.295 ± 0.031
2.608ValTyr: 2.608 ± 0.093
0.0ValXaa: 0.0 ± 0.0
Trp
0.237TrpAla: 0.237 ± 0.028
0.116TrpCys: 0.116 ± 0.017
0.33TrpAsp: 0.33 ± 0.027
0.284TrpGlu: 0.284 ± 0.032
0.278TrpPhe: 0.278 ± 0.027
0.292TrpGly: 0.292 ± 0.028
0.101TrpHis: 0.101 ± 0.019
0.495TrpIle: 0.495 ± 0.04
0.391TrpLys: 0.391 ± 0.035
0.501TrpLeu: 0.501 ± 0.04
0.139TrpMet: 0.139 ± 0.019
0.394TrpAsn: 0.394 ± 0.034
0.119TrpPro: 0.119 ± 0.02
0.162TrpGln: 0.162 ± 0.024
0.165TrpArg: 0.165 ± 0.024
0.304TrpSer: 0.304 ± 0.034
0.284TrpThr: 0.284 ± 0.03
0.339TrpVal: 0.339 ± 0.032
0.043TrpTrp: 0.043 ± 0.011
0.368TrpTyr: 0.368 ± 0.034
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.173TyrAla: 2.173 ± 0.084
0.541TyrCys: 0.541 ± 0.041
3.34TyrAsp: 3.34 ± 0.089
3.227TyrGlu: 3.227 ± 0.091
2.22TyrPhe: 2.22 ± 0.084
2.581TyrGly: 2.581 ± 0.093
0.651TyrHis: 0.651 ± 0.047
4.85TyrIle: 4.85 ± 0.138
5.021TyrLys: 5.021 ± 0.14
4.836TyrLeu: 4.836 ± 0.103
0.993TyrMet: 0.993 ± 0.053
4.231TyrAsn: 4.231 ± 0.108
1.317TyrPro: 1.317 ± 0.064
1.198TyrGln: 1.198 ± 0.061
1.679TyrArg: 1.679 ± 0.077
3.186TyrSer: 3.186 ± 0.096
2.746TyrThr: 2.746 ± 0.101
3.001TyrVal: 3.001 ± 0.091
0.24TyrTrp: 0.24 ± 0.029
2.735TyrTyr: 2.735 ± 0.108
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
0.003XaaPhe: 0.003 ± 0.003
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
0.003XaaArg: 0.003 ± 0.003
0.003XaaSer: 0.003 ± 0.003
0.0XaaThr: 0.0 ± 0.0
0.0XaaVal: 0.0 ± 0.0
0.0XaaTrp: 0.0 ± 0.0
0.0XaaTyr: 0.0 ± 0.0
0.017XaaXaa: 0.017 ± 0.01
Statistics based on 1170 proteins (345540 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