Amino acid dipepetide frequency for Xenophilus sp. AP218F

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
18.72AlaAla: 18.72 ± 0.216
1.517AlaCys: 1.517 ± 0.04
6.86AlaAsp: 6.86 ± 0.096
7.56AlaGlu: 7.56 ± 0.109
4.061AlaPhe: 4.061 ± 0.062
10.912AlaGly: 10.912 ± 0.107
2.155AlaHis: 2.155 ± 0.04
5.556AlaIle: 5.556 ± 0.082
4.137AlaLys: 4.137 ± 0.077
15.27AlaLeu: 15.27 ± 0.171
3.517AlaMet: 3.517 ± 0.062
3.169AlaAsn: 3.169 ± 0.064
5.52AlaPro: 5.52 ± 0.095
5.049AlaGln: 5.049 ± 0.077
9.16AlaArg: 9.16 ± 0.122
6.904AlaSer: 6.904 ± 0.096
4.672AlaThr: 4.672 ± 0.074
7.781AlaVal: 7.781 ± 0.084
1.887AlaTrp: 1.887 ± 0.05
2.592AlaTyr: 2.592 ± 0.051
0.0AlaXaa: 0.0 ± 0.0
Cys
1.115CysAla: 1.115 ± 0.036
0.16CysCys: 0.16 ± 0.013
0.583CysAsp: 0.583 ± 0.026
0.522CysGlu: 0.522 ± 0.022
0.313CysPhe: 0.313 ± 0.017
1.039CysGly: 1.039 ± 0.034
0.304CysHis: 0.304 ± 0.016
0.368CysIle: 0.368 ± 0.019
0.261CysLys: 0.261 ± 0.017
1.188CysLeu: 1.188 ± 0.033
0.19CysMet: 0.19 ± 0.012
0.253CysAsn: 0.253 ± 0.015
0.564CysPro: 0.564 ± 0.025
0.448CysGln: 0.448 ± 0.02
0.852CysArg: 0.852 ± 0.03
0.52CysSer: 0.52 ± 0.024
0.308CysThr: 0.308 ± 0.017
0.694CysVal: 0.694 ± 0.027
0.145CysTrp: 0.145 ± 0.011
0.285CysTyr: 0.285 ± 0.017
0.0CysXaa: 0.0 ± 0.0
Asp
6.998AspAla: 6.998 ± 0.091
0.576AspCys: 0.576 ± 0.023
2.946AspAsp: 2.946 ± 0.054
3.242AspGlu: 3.242 ± 0.06
2.093AspPhe: 2.093 ± 0.042
4.941AspGly: 4.941 ± 0.091
0.997AspHis: 0.997 ± 0.029
2.93AspIle: 2.93 ± 0.057
2.32AspLys: 2.32 ± 0.048
4.944AspLeu: 4.944 ± 0.066
1.3AspMet: 1.3 ± 0.03
1.582AspAsn: 1.582 ± 0.045
2.589AspPro: 2.589 ± 0.051
1.789AspGln: 1.789 ± 0.049
2.787AspArg: 2.787 ± 0.054
2.819AspSer: 2.819 ± 0.059
2.123AspThr: 2.123 ± 0.052
3.639AspVal: 3.639 ± 0.061
1.114AspTrp: 1.114 ± 0.033
1.757AspTyr: 1.757 ± 0.042
0.001AspXaa: 0.001 ± 0.001
Glu
7.239GluAla: 7.239 ± 0.091
0.437GluCys: 0.437 ± 0.02
2.4GluAsp: 2.4 ± 0.048
2.957GluGlu: 2.957 ± 0.067
1.757GluPhe: 1.757 ± 0.044
3.422GluGly: 3.422 ± 0.056
1.312GluHis: 1.312 ± 0.036
2.773GluIle: 2.773 ± 0.048
2.166GluLys: 2.166 ± 0.05
6.61GluLeu: 6.61 ± 0.093
1.466GluMet: 1.466 ± 0.041
1.586GluAsn: 1.586 ± 0.037
2.334GluPro: 2.334 ± 0.064
3.11GluGln: 3.11 ± 0.062
4.547GluArg: 4.547 ± 0.074
2.544GluSer: 2.544 ± 0.044
2.608GluThr: 2.608 ± 0.052
3.801GluVal: 3.801 ± 0.068
0.779GluTrp: 0.779 ± 0.025
1.135GluTyr: 1.135 ± 0.034
0.0GluXaa: 0.0 ± 0.0
Phe
4.211PheAla: 4.211 ± 0.063
0.447PheCys: 0.447 ± 0.022
2.402PheAsp: 2.402 ± 0.045
1.84PheGlu: 1.84 ± 0.04
1.319PhePhe: 1.319 ± 0.038
3.22PheGly: 3.22 ± 0.065
0.746PheHis: 0.746 ± 0.029
1.65PheIle: 1.65 ± 0.043
1.219PheLys: 1.219 ± 0.036
3.251PheLeu: 3.251 ± 0.059
0.783PheMet: 0.783 ± 0.029
1.312PheAsn: 1.312 ± 0.029
1.524PhePro: 1.524 ± 0.037
1.169PheGln: 1.169 ± 0.033
1.952PheArg: 1.952 ± 0.039
2.352PheSer: 2.352 ± 0.047
1.633PheThr: 1.633 ± 0.042
2.407PheVal: 2.407 ± 0.051
0.541PheTrp: 0.541 ± 0.024
1.007PheTyr: 1.007 ± 0.029
0.0PheXaa: 0.0 ± 0.0
Gly
8.152GlyAla: 8.152 ± 0.1
0.933GlyCys: 0.933 ± 0.034
4.271GlyAsp: 4.271 ± 0.073
5.02GlyGlu: 5.02 ± 0.067
3.251GlyPhe: 3.251 ± 0.061
6.988GlyGly: 6.988 ± 0.108
1.78GlyHis: 1.78 ± 0.043
3.789GlyIle: 3.789 ± 0.062
4.15GlyLys: 4.15 ± 0.075
8.692GlyLeu: 8.692 ± 0.107
2.422GlyMet: 2.422 ± 0.047
2.449GlyAsn: 2.449 ± 0.05
2.375GlyPro: 2.375 ± 0.047
3.579GlyGln: 3.579 ± 0.056
5.246GlyArg: 5.246 ± 0.07
4.424GlySer: 4.424 ± 0.076
2.883GlyThr: 2.883 ± 0.056
6.358GlyVal: 6.358 ± 0.085
1.501GlyTrp: 1.501 ± 0.039
2.49GlyTyr: 2.49 ± 0.047
0.001GlyXaa: 0.001 ± 0.001
His
2.462HisAla: 2.462 ± 0.047
0.305HisCys: 0.305 ± 0.016
1.106HisAsp: 1.106 ± 0.031
0.959HisGlu: 0.959 ± 0.027
0.882HisPhe: 0.882 ± 0.029
1.979HisGly: 1.979 ± 0.042
0.572HisHis: 0.572 ± 0.027
0.987HisIle: 0.987 ± 0.032
0.625HisLys: 0.625 ± 0.021
2.112HisLeu: 2.112 ± 0.048
0.43HisMet: 0.43 ± 0.021
0.568HisAsn: 0.568 ± 0.024
1.486HisPro: 1.486 ± 0.037
0.869HisGln: 0.869 ± 0.03
1.27HisArg: 1.27 ± 0.035
1.053HisSer: 1.053 ± 0.033
0.839HisThr: 0.839 ± 0.026
1.242HisVal: 1.242 ± 0.035
0.361HisTrp: 0.361 ± 0.018
0.734HisTyr: 0.734 ± 0.025
0.0HisXaa: 0.0 ± 0.0
Ile
6.144IleAla: 6.144 ± 0.088
0.463IleCys: 0.463 ± 0.021
2.923IleAsp: 2.923 ± 0.057
2.849IleGlu: 2.849 ± 0.059
1.285IlePhe: 1.285 ± 0.04
4.173IleGly: 4.173 ± 0.065
0.945IleHis: 0.945 ± 0.029
1.793IleIle: 1.793 ± 0.047
1.704IleLys: 1.704 ± 0.042
4.003IleLeu: 4.003 ± 0.064
0.833IleMet: 0.833 ± 0.031
1.647IleAsn: 1.647 ± 0.038
2.124IlePro: 2.124 ± 0.045
1.479IleGln: 1.479 ± 0.035
3.048IleArg: 3.048 ± 0.053
2.693IleSer: 2.693 ± 0.05
2.183IleThr: 2.183 ± 0.052
3.337IleVal: 3.337 ± 0.051
0.462IleTrp: 0.462 ± 0.023
1.041IleTyr: 1.041 ± 0.031
0.0IleXaa: 0.0 ± 0.0
Lys
4.182LysAla: 4.182 ± 0.08
0.169LysCys: 0.169 ± 0.013
1.7LysAsp: 1.7 ± 0.047
1.762LysGlu: 1.762 ± 0.044
0.873LysPhe: 0.873 ± 0.031
2.56LysGly: 2.56 ± 0.059
0.809LysHis: 0.809 ± 0.031
1.68LysIle: 1.68 ± 0.049
1.656LysLys: 1.656 ± 0.056
4.586LysLeu: 4.586 ± 0.074
0.984LysMet: 0.984 ± 0.03
1.149LysAsn: 1.149 ± 0.033
2.308LysPro: 2.308 ± 0.051
1.784LysGln: 1.784 ± 0.038
2.389LysArg: 2.389 ± 0.053
1.963LysSer: 1.963 ± 0.044
2.048LysThr: 2.048 ± 0.054
2.669LysVal: 2.669 ± 0.058
0.388LysTrp: 0.388 ± 0.018
0.749LysTyr: 0.749 ± 0.029
0.0LysXaa: 0.0 ± 0.0
Leu
17.219LeuAla: 17.219 ± 0.208
1.1LeuCys: 1.1 ± 0.028
6.307LeuAsp: 6.307 ± 0.082
5.835LeuGlu: 5.835 ± 0.086
3.848LeuPhe: 3.848 ± 0.066
8.536LeuGly: 8.536 ± 0.107
2.034LeuHis: 2.034 ± 0.047
5.042LeuIle: 5.042 ± 0.073
4.268LeuLys: 4.268 ± 0.077
13.388LeuLeu: 13.388 ± 0.198
2.562LeuMet: 2.562 ± 0.055
3.23LeuAsn: 3.23 ± 0.057
6.866LeuPro: 6.866 ± 0.093
4.692LeuGln: 4.692 ± 0.068
7.697LeuArg: 7.697 ± 0.095
7.428LeuSer: 7.428 ± 0.084
5.567LeuThr: 5.567 ± 0.061
6.543LeuVal: 6.543 ± 0.095
1.325LeuTrp: 1.325 ± 0.035
2.409LeuTyr: 2.409 ± 0.056
0.0LeuXaa: 0.0 ± 0.0
Met
3.032MetAla: 3.032 ± 0.055
0.167MetCys: 0.167 ± 0.012
1.131MetAsp: 1.131 ± 0.029
1.14MetGlu: 1.14 ± 0.031
0.702MetPhe: 0.702 ± 0.026
1.752MetGly: 1.752 ± 0.043
0.498MetHis: 0.498 ± 0.024
1.049MetIle: 1.049 ± 0.033
1.087MetLys: 1.087 ± 0.035
2.99MetLeu: 2.99 ± 0.054
0.667MetMet: 0.667 ± 0.027
0.777MetAsn: 0.777 ± 0.027
1.338MetPro: 1.338 ± 0.032
1.18MetGln: 1.18 ± 0.029
1.646MetArg: 1.646 ± 0.036
1.661MetSer: 1.661 ± 0.039
1.36MetThr: 1.36 ± 0.033
1.627MetVal: 1.627 ± 0.041
0.196MetTrp: 0.196 ± 0.013
0.412MetTyr: 0.412 ± 0.021
0.0MetXaa: 0.0 ± 0.0
Asn
3.376AsnAla: 3.376 ± 0.056
0.257AsnCys: 0.257 ± 0.015
1.469AsnAsp: 1.469 ± 0.04
1.339AsnGlu: 1.339 ± 0.036
0.988AsnPhe: 0.988 ± 0.029
2.51AsnGly: 2.51 ± 0.057
0.619AsnHis: 0.619 ± 0.023
1.425AsnIle: 1.425 ± 0.036
0.954AsnLys: 0.954 ± 0.031
3.169AsnLeu: 3.169 ± 0.061
0.658AsnMet: 0.658 ± 0.028
0.906AsnAsn: 0.906 ± 0.032
1.96AsnPro: 1.96 ± 0.042
1.298AsnGln: 1.298 ± 0.037
1.882AsnArg: 1.882 ± 0.035
1.444AsnSer: 1.444 ± 0.04
1.274AsnThr: 1.274 ± 0.043
1.935AsnVal: 1.935 ± 0.046
0.493AsnTrp: 0.493 ± 0.024
0.835AsnTyr: 0.835 ± 0.029
0.0AsnXaa: 0.0 ± 0.0
Pro
7.079ProAla: 7.079 ± 0.11
0.445ProCys: 0.445 ± 0.023
3.204ProAsp: 3.204 ± 0.053
3.282ProGlu: 3.282 ± 0.053
1.799ProPhe: 1.799 ± 0.043
4.019ProGly: 4.019 ± 0.067
0.971ProHis: 0.971 ± 0.031
1.788ProIle: 1.788 ± 0.037
1.526ProLys: 1.526 ± 0.04
5.615ProLeu: 5.615 ± 0.08
1.064ProMet: 1.064 ± 0.029
1.212ProAsn: 1.212 ± 0.036
2.492ProPro: 2.492 ± 0.058
2.332ProGln: 2.332 ± 0.051
2.757ProArg: 2.757 ± 0.055
2.456ProSer: 2.456 ± 0.048
1.937ProThr: 1.937 ± 0.042
3.523ProVal: 3.523 ± 0.056
0.737ProTrp: 0.737 ± 0.028
1.248ProTyr: 1.248 ± 0.035
0.0ProXaa: 0.0 ± 0.0
Gln
6.176GlnAla: 6.176 ± 0.091
0.325GlnCys: 0.325 ± 0.017
1.976GlnAsp: 1.976 ± 0.042
1.854GlnGlu: 1.854 ± 0.047
1.277GlnPhe: 1.277 ± 0.037
3.329GlnGly: 3.329 ± 0.058
0.954GlnHis: 0.954 ± 0.03
1.876GlnIle: 1.876 ± 0.043
1.355GlnLys: 1.355 ± 0.037
5.678GlnLeu: 5.678 ± 0.09
1.041GlnMet: 1.041 ± 0.032
1.092GlnAsn: 1.092 ± 0.032
2.533GlnPro: 2.533 ± 0.058
2.646GlnGln: 2.646 ± 0.064
3.26GlnArg: 3.26 ± 0.065
2.344GlnSer: 2.344 ± 0.047
2.131GlnThr: 2.131 ± 0.046
2.865GlnVal: 2.865 ± 0.06
0.626GlnTrp: 0.626 ± 0.023
0.953GlnTyr: 0.953 ± 0.029
0.0GlnXaa: 0.0 ± 0.0
Arg
7.335ArgAla: 7.335 ± 0.093
0.611ArgCys: 0.611 ± 0.024
3.825ArgAsp: 3.825 ± 0.06
4.41ArgGlu: 4.41 ± 0.058
2.886ArgPhe: 2.886 ± 0.053
4.43ArgGly: 4.43 ± 0.064
1.919ArgHis: 1.919 ± 0.041
3.207ArgIle: 3.207 ± 0.051
2.262ArgLys: 2.262 ± 0.05
8.741ArgLeu: 8.741 ± 0.123
1.674ArgMet: 1.674 ± 0.037
1.823ArgAsn: 1.823 ± 0.04
2.991ArgPro: 2.991 ± 0.062
4.096ArgGln: 4.096 ± 0.069
5.24ArgArg: 5.24 ± 0.089
2.98ArgSer: 2.98 ± 0.056
2.106ArgThr: 2.106 ± 0.045
4.448ArgVal: 4.448 ± 0.065
1.036ArgTrp: 1.036 ± 0.032
2.166ArgTyr: 2.166 ± 0.037
0.0ArgXaa: 0.0 ± 0.0
Ser
6.452SerAla: 6.452 ± 0.086
0.587SerCys: 0.587 ± 0.027
2.724SerAsp: 2.724 ± 0.056
2.696SerGlu: 2.696 ± 0.047
2.134SerPhe: 2.134 ± 0.045
5.411SerGly: 5.411 ± 0.093
1.27SerHis: 1.27 ± 0.036
2.399SerIle: 2.399 ± 0.054
1.688SerLys: 1.688 ± 0.037
6.552SerLeu: 6.552 ± 0.081
1.302SerMet: 1.302 ± 0.032
1.508SerAsn: 1.508 ± 0.04
2.679SerPro: 2.679 ± 0.047
2.548SerGln: 2.548 ± 0.056
3.966SerArg: 3.966 ± 0.062
3.102SerSer: 3.102 ± 0.076
2.262SerThr: 2.262 ± 0.049
3.796SerVal: 3.796 ± 0.071
0.869SerTrp: 0.869 ± 0.03
1.495SerTyr: 1.495 ± 0.04
0.0SerXaa: 0.0 ± 0.0
Thr
4.709ThrAla: 4.709 ± 0.068
0.376ThrCys: 0.376 ± 0.017
1.946ThrAsp: 1.946 ± 0.05
1.963ThrGlu: 1.963 ± 0.044
1.46ThrPhe: 1.46 ± 0.039
3.66ThrGly: 3.66 ± 0.057
0.873ThrHis: 0.873 ± 0.027
1.959ThrIle: 1.959 ± 0.047
1.035ThrLys: 1.035 ± 0.033
6.26ThrLeu: 6.26 ± 0.084
0.913ThrMet: 0.913 ± 0.03
1.07ThrAsn: 1.07 ± 0.035
2.919ThrPro: 2.919 ± 0.058
1.621ThrGln: 1.621 ± 0.04
2.916ThrArg: 2.916 ± 0.046
2.224ThrSer: 2.224 ± 0.045
2.037ThrThr: 2.037 ± 0.053
3.499ThrVal: 3.499 ± 0.083
0.481ThrTrp: 0.481 ± 0.018
0.922ThrTyr: 0.922 ± 0.031
0.0ThrXaa: 0.0 ± 0.0
Val
8.507ValAla: 8.507 ± 0.106
0.787ValCys: 0.787 ± 0.025
3.891ValAsp: 3.891 ± 0.058
4.178ValGlu: 4.178 ± 0.07
2.474ValPhe: 2.474 ± 0.047
4.935ValGly: 4.935 ± 0.065
1.135ValHis: 1.135 ± 0.033
3.377ValIle: 3.377 ± 0.061
2.833ValLys: 2.833 ± 0.061
7.219ValLeu: 7.219 ± 0.092
1.788ValMet: 1.788 ± 0.038
2.215ValAsn: 2.215 ± 0.056
2.836ValPro: 2.836 ± 0.055
2.122ValGln: 2.122 ± 0.046
4.072ValArg: 4.072 ± 0.068
4.367ValSer: 4.367 ± 0.068
3.211ValThr: 3.211 ± 0.064
5.045ValVal: 5.045 ± 0.068
0.914ValTrp: 0.914 ± 0.029
1.633ValTyr: 1.633 ± 0.042
0.0ValXaa: 0.0 ± 0.0
Trp
1.138TrpAla: 1.138 ± 0.035
0.147TrpCys: 0.147 ± 0.01
0.572TrpAsp: 0.572 ± 0.024
0.556TrpGlu: 0.556 ± 0.024
0.54TrpPhe: 0.54 ± 0.021
0.874TrpGly: 0.874 ± 0.028
0.374TrpHis: 0.374 ± 0.017
0.587TrpIle: 0.587 ± 0.025
0.447TrpLys: 0.447 ± 0.021
2.52TrpLeu: 2.52 ± 0.057
0.356TrpMet: 0.356 ± 0.02
0.464TrpAsn: 0.464 ± 0.018
0.718TrpPro: 0.718 ± 0.026
1.067TrpGln: 1.067 ± 0.032
1.461TrpArg: 1.461 ± 0.044
0.787TrpSer: 0.787 ± 0.026
0.544TrpThr: 0.544 ± 0.025
0.847TrpVal: 0.847 ± 0.03
0.246TrpTrp: 0.246 ± 0.017
0.298TrpTyr: 0.298 ± 0.016
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.752TyrAla: 2.752 ± 0.058
0.301TyrCys: 0.301 ± 0.016
1.248TyrAsp: 1.248 ± 0.037
1.017TyrGlu: 1.017 ± 0.03
1.043TyrPhe: 1.043 ± 0.029
2.061TyrGly: 2.061 ± 0.044
0.575TyrHis: 0.575 ± 0.024
0.892TyrIle: 0.892 ± 0.028
0.716TyrLys: 0.716 ± 0.025
3.108TyrLeu: 3.108 ± 0.058
0.46TyrMet: 0.46 ± 0.025
0.78TyrAsn: 0.78 ± 0.026
1.33TyrPro: 1.33 ± 0.036
1.413TyrGln: 1.413 ± 0.037
2.039TyrArg: 2.039 ± 0.046
1.375TyrSer: 1.375 ± 0.043
1.117TyrThr: 1.117 ± 0.036
1.488TyrVal: 1.488 ± 0.036
0.443TyrTrp: 0.443 ± 0.02
0.712TyrTyr: 0.712 ± 0.024
0.0TyrXaa: 0.0 ± 0.0
Xaa
0.0XaaAla: 0.0 ± 0.0
0.0XaaCys: 0.0 ± 0.0
0.001XaaAsp: 0.001 ± 0.001
0.0XaaGlu: 0.0 ± 0.0
0.001XaaPhe: 0.001 ± 0.001
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 3588 proteins (1168738 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