Amino acid dipepetide frequency for Solemya velesiana gill symbiont

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
9.056AlaAla: 9.056 ± 0.175
1.089AlaCys: 1.089 ± 0.053
5.433AlaAsp: 5.433 ± 0.159
6.723AlaGlu: 6.723 ± 0.126
3.196AlaPhe: 3.196 ± 0.088
7.435AlaGly: 7.435 ± 0.139
1.867AlaHis: 1.867 ± 0.059
5.205AlaIle: 5.205 ± 0.084
3.651AlaLys: 3.651 ± 0.091
10.102AlaLeu: 10.102 ± 0.159
2.855AlaMet: 2.855 ± 0.08
2.772AlaAsn: 2.772 ± 0.078
3.333AlaPro: 3.333 ± 0.095
3.237AlaGln: 3.237 ± 0.091
5.31AlaArg: 5.31 ± 0.131
4.909AlaSer: 4.909 ± 0.094
4.317AlaThr: 4.317 ± 0.118
6.857AlaVal: 6.857 ± 0.118
1.136AlaTrp: 1.136 ± 0.046
2.298AlaTyr: 2.298 ± 0.062
0.0AlaXaa: 0.0 ± 0.0
Cys
0.776CysAla: 0.776 ± 0.037
0.174CysCys: 0.174 ± 0.019
0.61CysAsp: 0.61 ± 0.034
0.619CysGlu: 0.619 ± 0.03
0.355CysPhe: 0.355 ± 0.025
1.003CysGly: 1.003 ± 0.046
0.31CysHis: 0.31 ± 0.025
0.555CysIle: 0.555 ± 0.032
0.332CysLys: 0.332 ± 0.024
0.868CysLeu: 0.868 ± 0.037
0.216CysMet: 0.216 ± 0.017
0.369CysAsn: 0.369 ± 0.025
0.595CysPro: 0.595 ± 0.035
0.35CysGln: 0.35 ± 0.027
0.663CysArg: 0.663 ± 0.037
0.668CysSer: 0.668 ± 0.041
0.484CysThr: 0.484 ± 0.031
0.621CysVal: 0.621 ± 0.036
0.131CysTrp: 0.131 ± 0.016
0.247CysTyr: 0.247 ± 0.02
0.0CysXaa: 0.0 ± 0.0
Asp
5.294AspAla: 5.294 ± 0.13
0.551AspCys: 0.551 ± 0.03
3.531AspAsp: 3.531 ± 0.251
4.736AspGlu: 4.736 ± 0.111
2.349AspPhe: 2.349 ± 0.079
4.5AspGly: 4.5 ± 0.193
1.357AspHis: 1.357 ± 0.049
3.779AspIle: 3.779 ± 0.114
2.463AspLys: 2.463 ± 0.064
6.14AspLeu: 6.14 ± 0.136
1.486AspMet: 1.486 ± 0.048
2.004AspAsn: 2.004 ± 0.096
2.898AspPro: 2.898 ± 0.083
2.289AspGln: 2.289 ± 0.056
3.473AspArg: 3.473 ± 0.087
3.157AspSer: 3.157 ± 0.13
2.997AspThr: 2.997 ± 0.222
3.936AspVal: 3.936 ± 0.166
0.881AspTrp: 0.881 ± 0.037
1.831AspTyr: 1.831 ± 0.064
0.0AspXaa: 0.0 ± 0.0
Glu
6.776GluAla: 6.776 ± 0.137
0.522GluCys: 0.522 ± 0.031
3.46GluAsp: 3.46 ± 0.09
5.437GluGlu: 5.437 ± 0.141
2.289GluPhe: 2.289 ± 0.072
5.098GluGly: 5.098 ± 0.108
1.759GluHis: 1.759 ± 0.06
4.578GluIle: 4.578 ± 0.086
3.757GluLys: 3.757 ± 0.097
7.523GluLeu: 7.523 ± 0.118
2.177GluMet: 2.177 ± 0.071
2.416GluAsn: 2.416 ± 0.058
2.836GluPro: 2.836 ± 0.082
3.806GluGln: 3.806 ± 0.101
4.746GluArg: 4.746 ± 0.124
4.057GluSer: 4.057 ± 0.089
3.782GluThr: 3.782 ± 0.075
4.986GluVal: 4.986 ± 0.097
0.789GluTrp: 0.789 ± 0.033
1.661GluTyr: 1.661 ± 0.044
0.0GluXaa: 0.0 ± 0.0
Phe
2.983PheAla: 2.983 ± 0.072
0.444PheCys: 0.444 ± 0.026
2.594PheAsp: 2.594 ± 0.067
2.532PheGlu: 2.532 ± 0.064
1.544PhePhe: 1.544 ± 0.057
2.986PheGly: 2.986 ± 0.083
0.833PheHis: 0.833 ± 0.033
2.131PheIle: 2.131 ± 0.06
1.426PheLys: 1.426 ± 0.047
3.476PheLeu: 3.476 ± 0.096
0.875PheMet: 0.875 ± 0.039
1.455PheAsn: 1.455 ± 0.054
1.535PhePro: 1.535 ± 0.055
1.292PheGln: 1.292 ± 0.045
2.017PheArg: 2.017 ± 0.065
2.7PheSer: 2.7 ± 0.077
2.031PheThr: 2.031 ± 0.089
2.292PheVal: 2.292 ± 0.068
0.463PheTrp: 0.463 ± 0.03
1.034PheTyr: 1.034 ± 0.042
0.0PheXaa: 0.0 ± 0.0
Gly
6.244GlyAla: 6.244 ± 0.13
0.957GlyCys: 0.957 ± 0.046
4.746GlyAsp: 4.746 ± 0.24
5.676GlyGlu: 5.676 ± 0.095
3.231GlyPhe: 3.231 ± 0.08
6.081GlyGly: 6.081 ± 0.203
1.749GlyHis: 1.749 ± 0.055
4.911GlyIle: 4.911 ± 0.1
3.953GlyLys: 3.953 ± 0.098
7.875GlyLeu: 7.875 ± 0.127
2.589GlyMet: 2.589 ± 0.076
2.569GlyAsn: 2.569 ± 0.138
2.337GlyPro: 2.337 ± 0.061
2.742GlyGln: 2.742 ± 0.063
4.676GlyArg: 4.676 ± 0.101
4.566GlySer: 4.566 ± 0.165
3.979GlyThr: 3.979 ± 0.182
5.874GlyVal: 5.874 ± 0.1
1.077GlyTrp: 1.077 ± 0.041
2.576GlyTyr: 2.576 ± 0.064
0.0GlyXaa: 0.0 ± 0.0
His
1.893HisAla: 1.893 ± 0.063
0.304HisCys: 0.304 ± 0.023
1.23HisAsp: 1.23 ± 0.052
1.4HisGlu: 1.4 ± 0.053
0.927HisPhe: 0.927 ± 0.042
1.841HisGly: 1.841 ± 0.06
0.699HisHis: 0.699 ± 0.038
1.266HisIle: 1.266 ± 0.044
0.872HisLys: 0.872 ± 0.043
2.45HisLeu: 2.45 ± 0.07
0.633HisMet: 0.633 ± 0.031
0.721HisAsn: 0.721 ± 0.036
1.455HisPro: 1.455 ± 0.053
0.879HisGln: 0.879 ± 0.042
1.41HisArg: 1.41 ± 0.059
1.172HisSer: 1.172 ± 0.043
1.012HisThr: 1.012 ± 0.042
1.36HisVal: 1.36 ± 0.048
0.345HisTrp: 0.345 ± 0.023
0.79HisTyr: 0.79 ± 0.031
0.0HisXaa: 0.0 ± 0.0
Ile
5.63IleAla: 5.63 ± 0.1
0.568IleCys: 0.568 ± 0.032
3.971IleAsp: 3.971 ± 0.132
4.371IleGlu: 4.371 ± 0.107
1.874IlePhe: 1.874 ± 0.058
4.827IleGly: 4.827 ± 0.089
1.306IleHis: 1.306 ± 0.047
3.134IleIle: 3.134 ± 0.081
2.561IleLys: 2.561 ± 0.067
5.17IleLeu: 5.17 ± 0.101
1.27IleMet: 1.27 ± 0.054
2.285IleAsn: 2.285 ± 0.088
2.836IlePro: 2.836 ± 0.076
1.952IleGln: 1.952 ± 0.057
3.476IleArg: 3.476 ± 0.087
3.767IleSer: 3.767 ± 0.079
3.309IleThr: 3.309 ± 0.094
3.44IleVal: 3.44 ± 0.084
0.604IleTrp: 0.604 ± 0.03
1.507IleTyr: 1.507 ± 0.051
0.0IleXaa: 0.0 ± 0.0
Lys
4.341LysAla: 4.341 ± 0.112
0.296LysCys: 0.296 ± 0.023
2.153LysAsp: 2.153 ± 0.049
2.907LysGlu: 2.907 ± 0.08
1.099LysPhe: 1.099 ± 0.045
3.377LysGly: 3.377 ± 0.081
0.96LysHis: 0.96 ± 0.04
2.398LysIle: 2.398 ± 0.071
2.454LysLys: 2.454 ± 0.095
4.353LysLeu: 4.353 ± 0.11
1.198LysMet: 1.198 ± 0.049
1.384LysAsn: 1.384 ± 0.048
2.235LysPro: 2.235 ± 0.067
1.945LysGln: 1.945 ± 0.071
3.168LysArg: 3.168 ± 0.101
2.483LysSer: 2.483 ± 0.068
2.269LysThr: 2.269 ± 0.079
3.168LysVal: 3.168 ± 0.082
0.417LysTrp: 0.417 ± 0.024
0.943LysTyr: 0.943 ± 0.045
0.0LysXaa: 0.0 ± 0.0
Leu
10.045LeuAla: 10.045 ± 0.139
0.926LeuCys: 0.926 ± 0.045
6.652LeuAsp: 6.652 ± 0.146
7.809LeuGlu: 7.809 ± 0.132
4.105LeuPhe: 4.105 ± 0.095
7.806LeuGly: 7.806 ± 0.128
2.23LeuHis: 2.23 ± 0.064
5.542LeuIle: 5.542 ± 0.101
4.841LeuLys: 4.841 ± 0.117
10.907LeuLeu: 10.907 ± 0.255
2.605LeuMet: 2.605 ± 0.08
3.528LeuAsn: 3.528 ± 0.091
5.019LeuPro: 5.019 ± 0.134
3.89LeuGln: 3.89 ± 0.091
5.908LeuArg: 5.908 ± 0.135
6.723LeuSer: 6.723 ± 0.104
5.105LeuThr: 5.105 ± 0.132
7.617LeuVal: 7.617 ± 0.136
1.065LeuTrp: 1.065 ± 0.046
2.431LeuTyr: 2.431 ± 0.069
0.0LeuXaa: 0.0 ± 0.0
Met
2.954MetAla: 2.954 ± 0.082
0.169MetCys: 0.169 ± 0.016
1.577MetAsp: 1.577 ± 0.053
1.935MetGlu: 1.935 ± 0.069
0.806MetPhe: 0.806 ± 0.041
2.122MetGly: 2.122 ± 0.061
0.557MetHis: 0.557 ± 0.031
1.424MetIle: 1.424 ± 0.055
1.321MetLys: 1.321 ± 0.05
2.888MetLeu: 2.888 ± 0.08
0.734MetMet: 0.734 ± 0.03
0.988MetAsn: 0.988 ± 0.036
1.413MetPro: 1.413 ± 0.059
1.14MetGln: 1.14 ± 0.039
1.592MetArg: 1.592 ± 0.059
1.762MetSer: 1.762 ± 0.07
1.466MetThr: 1.466 ± 0.048
1.877MetVal: 1.877 ± 0.05
0.186MetTrp: 0.186 ± 0.016
0.415MetTyr: 0.415 ± 0.026
0.0MetXaa: 0.0 ± 0.0
Asn
2.892AsnAla: 2.892 ± 0.08
0.375AsnCys: 0.375 ± 0.027
1.805AsnAsp: 1.805 ± 0.114
2.092AsnGlu: 2.092 ± 0.054
1.119AsnPhe: 1.119 ± 0.041
2.601AsnGly: 2.601 ± 0.111
0.741AsnHis: 0.741 ± 0.038
2.079AsnIle: 2.079 ± 0.067
1.315AsnLys: 1.315 ± 0.046
3.44AsnLeu: 3.44 ± 0.077
0.858AsnMet: 0.858 ± 0.038
1.161AsnAsn: 1.161 ± 0.057
2.124AsnPro: 2.124 ± 0.061
1.275AsnGln: 1.275 ± 0.038
2.287AsnArg: 2.287 ± 0.066
1.84AsnSer: 1.84 ± 0.064
1.765AsnThr: 1.765 ± 0.081
2.093AsnVal: 2.093 ± 0.079
0.476AsnTrp: 0.476 ± 0.029
0.894AsnTyr: 0.894 ± 0.043
0.0AsnXaa: 0.0 ± 0.0
Pro
3.88ProAla: 3.88 ± 0.084
0.391ProCys: 0.391 ± 0.029
3.303ProAsp: 3.303 ± 0.083
4.26ProGlu: 4.26 ± 0.097
1.606ProPhe: 1.606 ± 0.052
3.884ProGly: 3.884 ± 0.085
0.885ProHis: 0.885 ± 0.043
2.215ProIle: 2.215 ± 0.063
1.791ProLys: 1.791 ± 0.069
4.415ProLeu: 4.415 ± 0.115
1.158ProMet: 1.158 ± 0.048
1.354ProAsn: 1.354 ± 0.043
1.804ProPro: 1.804 ± 0.064
1.432ProGln: 1.432 ± 0.057
2.138ProArg: 2.138 ± 0.064
2.432ProSer: 2.432 ± 0.057
2.065ProThr: 2.065 ± 0.058
3.868ProVal: 3.868 ± 0.081
0.555ProTrp: 0.555 ± 0.032
1.233ProTyr: 1.233 ± 0.054
0.0ProXaa: 0.0 ± 0.0
Gln
4.018GlnAla: 4.018 ± 0.096
0.319GlnCys: 0.319 ± 0.025
1.876GlnAsp: 1.876 ± 0.052
2.689GlnGlu: 2.689 ± 0.077
1.289GlnPhe: 1.289 ± 0.037
3.003GlnGly: 3.003 ± 0.07
0.92GlnHis: 0.92 ± 0.041
2.091GlnIle: 2.091 ± 0.06
1.561GlnLys: 1.561 ± 0.053
4.19GlnLeu: 4.19 ± 0.1
1.05GlnMet: 1.05 ± 0.041
1.061GlnAsn: 1.061 ± 0.037
1.717GlnPro: 1.717 ± 0.054
2.06GlnGln: 2.06 ± 0.074
2.641GlnArg: 2.641 ± 0.08
1.98GlnSer: 1.98 ± 0.059
1.646GlnThr: 1.646 ± 0.049
3.13GlnVal: 3.13 ± 0.072
0.466GlnTrp: 0.466 ± 0.032
0.875GlnTyr: 0.875 ± 0.035
0.0GlnXaa: 0.0 ± 0.0
Arg
4.491ArgAla: 4.491 ± 0.109
0.594ArgCys: 0.594 ± 0.035
3.421ArgAsp: 3.421 ± 0.083
4.592ArgGlu: 4.592 ± 0.125
2.706ArgPhe: 2.706 ± 0.077
3.762ArgGly: 3.762 ± 0.089
1.55ArgHis: 1.55 ± 0.062
3.914ArgIle: 3.914 ± 0.078
2.921ArgLys: 2.921 ± 0.092
6.922ArgLeu: 6.922 ± 0.181
1.886ArgMet: 1.886 ± 0.069
2.122ArgAsn: 2.122 ± 0.071
2.385ArgPro: 2.385 ± 0.068
2.634ArgGln: 2.634 ± 0.089
3.955ArgArg: 3.955 ± 0.121
3.392ArgSer: 3.392 ± 0.091
2.601ArgThr: 2.601 ± 0.075
4.097ArgVal: 4.097 ± 0.084
0.89ArgTrp: 0.89 ± 0.04
2.043ArgTyr: 2.043 ± 0.061
0.0ArgXaa: 0.0 ± 0.0
Ser
5.218SerAla: 5.218 ± 0.094
0.603SerCys: 0.603 ± 0.036
3.488SerAsp: 3.488 ± 0.118
4.061SerGlu: 4.061 ± 0.088
2.178SerPhe: 2.178 ± 0.064
5.52SerGly: 5.52 ± 0.149
1.352SerHis: 1.352 ± 0.045
3.326SerIle: 3.326 ± 0.073
2.238SerLys: 2.238 ± 0.066
6.107SerLeu: 6.107 ± 0.107
1.6SerMet: 1.6 ± 0.048
1.91SerAsn: 1.91 ± 0.066
2.566SerPro: 2.566 ± 0.062
2.119SerGln: 2.119 ± 0.052
3.72SerArg: 3.72 ± 0.098
3.509SerSer: 3.509 ± 0.086
2.787SerThr: 2.787 ± 0.075
4.126SerVal: 4.126 ± 0.105
0.704SerTrp: 0.704 ± 0.031
1.53SerTyr: 1.53 ± 0.053
0.0SerXaa: 0.0 ± 0.0
Thr
4.655ThrAla: 4.655 ± 0.099
0.471ThrCys: 0.471 ± 0.028
3.031ThrAsp: 3.031 ± 0.135
3.106ThrGlu: 3.106 ± 0.079
1.589ThrPhe: 1.589 ± 0.091
4.563ThrGly: 4.563 ± 0.151
1.171ThrHis: 1.171 ± 0.041
2.873ThrIle: 2.873 ± 0.125
1.589ThrLys: 1.589 ± 0.054
6.012ThrLeu: 6.012 ± 0.191
1.136ThrMet: 1.136 ± 0.039
1.39ThrAsn: 1.39 ± 0.062
2.865ThrPro: 2.865 ± 0.073
1.6ThrGln: 1.6 ± 0.046
2.993ThrArg: 2.993 ± 0.077
2.692ThrSer: 2.692 ± 0.07
2.725ThrThr: 2.725 ± 0.113
3.819ThrVal: 3.819 ± 0.168
0.569ThrTrp: 0.569 ± 0.037
1.231ThrTyr: 1.231 ± 0.06
0.0ThrXaa: 0.0 ± 0.0
Val
6.622ValAla: 6.622 ± 0.103
0.764ValCys: 0.764 ± 0.042
4.603ValAsp: 4.603 ± 0.142
5.248ValGlu: 5.248 ± 0.088
2.736ValPhe: 2.736 ± 0.078
5.107ValGly: 5.107 ± 0.107
1.46ValHis: 1.46 ± 0.054
4.524ValIle: 4.524 ± 0.089
3.029ValLys: 3.029 ± 0.069
7.24ValLeu: 7.24 ± 0.135
2.018ValMet: 2.018 ± 0.06
2.432ValAsn: 2.432 ± 0.066
2.958ValPro: 2.958 ± 0.06
2.203ValGln: 2.203 ± 0.057
3.862ValArg: 3.862 ± 0.094
4.498ValSer: 4.498 ± 0.081
3.953ValThr: 3.953 ± 0.149
5.791ValVal: 5.791 ± 0.124
0.719ValTrp: 0.719 ± 0.036
1.706ValTyr: 1.706 ± 0.054
0.0ValXaa: 0.0 ± 0.0
Trp
0.823TrpAla: 0.823 ± 0.037
0.153TrpCys: 0.153 ± 0.014
0.655TrpAsp: 0.655 ± 0.029
0.679TrpGlu: 0.679 ± 0.034
0.554TrpPhe: 0.554 ± 0.033
0.781TrpGly: 0.781 ± 0.035
0.32TrpHis: 0.32 ± 0.023
0.682TrpIle: 0.682 ± 0.037
0.509TrpLys: 0.509 ± 0.025
1.57TrpLeu: 1.57 ± 0.056
0.33TrpMet: 0.33 ± 0.023
0.474TrpAsn: 0.474 ± 0.028
0.495TrpPro: 0.495 ± 0.026
0.604TrpGln: 0.604 ± 0.041
0.835TrpArg: 0.835 ± 0.039
0.758TrpSer: 0.758 ± 0.046
0.482TrpThr: 0.482 ± 0.032
0.871TrpVal: 0.871 ± 0.04
0.199TrpTrp: 0.199 ± 0.017
0.285TrpTyr: 0.285 ± 0.022
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.189TyrAla: 2.189 ± 0.063
0.278TyrCys: 0.278 ± 0.023
1.515TyrAsp: 1.515 ± 0.066
1.584TyrGlu: 1.584 ± 0.047
1.091TyrPhe: 1.091 ± 0.042
2.112TyrGly: 2.112 ± 0.081
0.631TyrHis: 0.631 ± 0.031
1.233TyrIle: 1.233 ± 0.043
0.962TyrLys: 0.962 ± 0.043
3.106TyrLeu: 3.106 ± 0.078
0.649TyrMet: 0.649 ± 0.03
0.835TyrAsn: 0.835 ± 0.034
1.262TyrPro: 1.262 ± 0.049
1.13TyrGln: 1.13 ± 0.045
2.008TyrArg: 2.008 ± 0.062
1.597TyrSer: 1.597 ± 0.058
1.305TyrThr: 1.305 ± 0.062
1.654TyrVal: 1.654 ± 0.052
0.388TyrTrp: 0.388 ± 0.02
0.81TyrTyr: 0.81 ± 0.035
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 2304 proteins (693604 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