Amino acid dipepetide frequency for Desulfovibrio sp. An276

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
9.759AlaAla: 9.759 ± 0.15
1.968AlaCys: 1.968 ± 0.058
4.913AlaAsp: 4.913 ± 0.081
5.581AlaGlu: 5.581 ± 0.078
3.577AlaPhe: 3.577 ± 0.078
7.645AlaGly: 7.645 ± 0.112
1.891AlaHis: 1.891 ± 0.05
4.929AlaIle: 4.929 ± 0.09
4.532AlaLys: 4.532 ± 0.079
11.135AlaLeu: 11.135 ± 0.127
2.998AlaMet: 2.998 ± 0.06
2.983AlaAsn: 2.983 ± 0.059
4.04AlaPro: 4.04 ± 0.091
3.909AlaGln: 3.909 ± 0.074
7.31AlaArg: 7.31 ± 0.128
6.224AlaSer: 6.224 ± 0.089
4.714AlaThr: 4.714 ± 0.071
5.972AlaVal: 5.972 ± 0.098
1.193AlaTrp: 1.193 ± 0.034
2.325AlaTyr: 2.325 ± 0.054
0.0AlaXaa: 0.0 ± 0.0
Cys
1.799CysAla: 1.799 ± 0.049
0.365CysCys: 0.365 ± 0.024
0.925CysAsp: 0.925 ± 0.033
0.993CysGlu: 0.993 ± 0.032
0.612CysPhe: 0.612 ± 0.024
1.68CysGly: 1.68 ± 0.049
0.467CysHis: 0.467 ± 0.03
0.828CysIle: 0.828 ± 0.032
0.665CysLys: 0.665 ± 0.029
2.004CysLeu: 2.004 ± 0.053
0.464CysMet: 0.464 ± 0.024
0.534CysAsn: 0.534 ± 0.026
1.128CysPro: 1.128 ± 0.046
0.543CysGln: 0.543 ± 0.026
1.096CysArg: 1.096 ± 0.039
1.074CysSer: 1.074 ± 0.039
0.979CysThr: 0.979 ± 0.032
1.256CysVal: 1.256 ± 0.043
0.184CysTrp: 0.184 ± 0.014
0.461CysTyr: 0.461 ± 0.024
0.0CysXaa: 0.0 ± 0.0
Asp
4.93AspAla: 4.93 ± 0.08
0.883AspCys: 0.883 ± 0.034
2.481AspAsp: 2.481 ± 0.072
3.691AspGlu: 3.691 ± 0.07
2.56AspPhe: 2.56 ± 0.054
3.852AspGly: 3.852 ± 0.084
0.912AspHis: 0.912 ± 0.033
3.698AspIle: 3.698 ± 0.06
2.801AspLys: 2.801 ± 0.063
5.24AspLeu: 5.24 ± 0.077
1.873AspMet: 1.873 ± 0.043
1.998AspAsn: 1.998 ± 0.055
2.552AspPro: 2.552 ± 0.05
1.179AspGln: 1.179 ± 0.04
3.102AspArg: 3.102 ± 0.066
2.647AspSer: 2.647 ± 0.055
2.817AspThr: 2.817 ± 0.055
3.913AspVal: 3.913 ± 0.076
0.742AspTrp: 0.742 ± 0.03
1.634AspTyr: 1.634 ± 0.048
0.0AspXaa: 0.0 ± 0.0
Glu
6.495GluAla: 6.495 ± 0.106
0.758GluCys: 0.758 ± 0.034
3.721GluAsp: 3.721 ± 0.08
5.505GluGlu: 5.505 ± 0.103
1.863GluPhe: 1.863 ± 0.052
4.72GluGly: 4.72 ± 0.088
1.456GluHis: 1.456 ± 0.04
3.424GluIle: 3.424 ± 0.065
4.156GluLys: 4.156 ± 0.092
6.19GluLeu: 6.19 ± 0.097
1.637GluMet: 1.637 ± 0.043
2.648GluAsn: 2.648 ± 0.06
2.295GluPro: 2.295 ± 0.053
2.5GluGln: 2.5 ± 0.06
4.437GluArg: 4.437 ± 0.078
3.077GluSer: 3.077 ± 0.054
3.032GluThr: 3.032 ± 0.061
3.83GluVal: 3.83 ± 0.073
0.649GluTrp: 0.649 ± 0.026
1.668GluTyr: 1.668 ± 0.046
0.0GluXaa: 0.0 ± 0.0
Phe
4.152PheAla: 4.152 ± 0.073
0.918PheCys: 0.918 ± 0.035
2.187PheAsp: 2.187 ± 0.052
2.079PheGlu: 2.079 ± 0.05
2.059PhePhe: 2.059 ± 0.061
3.203PheGly: 3.203 ± 0.059
0.732PheHis: 0.732 ± 0.028
1.745PheIle: 1.745 ± 0.054
1.322PheLys: 1.322 ± 0.043
4.359PheLeu: 4.359 ± 0.098
1.086PheMet: 1.086 ± 0.037
1.304PheAsn: 1.304 ± 0.047
1.802PhePro: 1.802 ± 0.044
0.972PheGln: 0.972 ± 0.038
2.293PheArg: 2.293 ± 0.053
2.745PheSer: 2.745 ± 0.06
2.029PheThr: 2.029 ± 0.046
2.967PheVal: 2.967 ± 0.066
0.672PheTrp: 0.672 ± 0.031
1.124PheTyr: 1.124 ± 0.037
0.0PheXaa: 0.0 ± 0.0
Gly
6.146GlyAla: 6.146 ± 0.116
1.481GlyCys: 1.481 ± 0.047
3.485GlyAsp: 3.485 ± 0.069
4.582GlyGlu: 4.582 ± 0.088
3.158GlyPhe: 3.158 ± 0.065
5.297GlyGly: 5.297 ± 0.097
1.648GlyHis: 1.648 ± 0.042
4.747GlyIle: 4.747 ± 0.085
4.57GlyLys: 4.57 ± 0.088
7.991GlyLeu: 7.991 ± 0.105
2.578GlyMet: 2.578 ± 0.05
2.589GlyAsn: 2.589 ± 0.056
2.557GlyPro: 2.557 ± 0.053
2.713GlyGln: 2.713 ± 0.061
4.683GlyArg: 4.683 ± 0.085
4.66GlySer: 4.66 ± 0.074
4.564GlyThr: 4.564 ± 0.082
4.969GlyVal: 4.969 ± 0.089
1.008GlyTrp: 1.008 ± 0.04
2.419GlyTyr: 2.419 ± 0.06
0.0GlyXaa: 0.0 ± 0.0
His
1.934HisAla: 1.934 ± 0.053
0.495HisCys: 0.495 ± 0.028
1.111HisAsp: 1.111 ± 0.038
1.244HisGlu: 1.244 ± 0.039
0.955HisPhe: 0.955 ± 0.034
1.635HisGly: 1.635 ± 0.047
0.456HisHis: 0.456 ± 0.024
1.32HisIle: 1.32 ± 0.034
0.933HisLys: 0.933 ± 0.031
2.037HisLeu: 2.037 ± 0.053
0.641HisMet: 0.641 ± 0.026
0.772HisAsn: 0.772 ± 0.031
1.232HisPro: 1.232 ± 0.037
0.474HisGln: 0.474 ± 0.023
1.054HisArg: 1.054 ± 0.038
1.081HisSer: 1.081 ± 0.035
1.12HisThr: 1.12 ± 0.036
1.532HisVal: 1.532 ± 0.044
0.274HisTrp: 0.274 ± 0.018
0.655HisTyr: 0.655 ± 0.028
0.0HisXaa: 0.0 ± 0.0
Ile
5.068IleAla: 5.068 ± 0.079
0.96IleCys: 0.96 ± 0.033
2.821IleAsp: 2.821 ± 0.061
3.057IleGlu: 3.057 ± 0.064
2.243IlePhe: 2.243 ± 0.058
3.79IleGly: 3.79 ± 0.068
1.012IleHis: 1.012 ± 0.031
2.681IleIle: 2.681 ± 0.069
1.929IleLys: 1.929 ± 0.057
5.888IleLeu: 5.888 ± 0.109
1.42IleMet: 1.42 ± 0.039
1.795IleAsn: 1.795 ± 0.061
2.758IlePro: 2.758 ± 0.062
1.447IleGln: 1.447 ± 0.042
3.092IleArg: 3.092 ± 0.067
3.363IleSer: 3.363 ± 0.078
2.824IleThr: 2.824 ± 0.064
4.112IleVal: 4.112 ± 0.068
0.559IleTrp: 0.559 ± 0.029
1.479IleTyr: 1.479 ± 0.05
0.0IleXaa: 0.0 ± 0.0
Lys
5.261LysAla: 5.261 ± 0.099
0.575LysCys: 0.575 ± 0.029
2.839LysAsp: 2.839 ± 0.057
3.26LysGlu: 3.26 ± 0.063
1.275LysPhe: 1.275 ± 0.049
3.683LysGly: 3.683 ± 0.074
0.854LysHis: 0.854 ± 0.032
2.443LysIle: 2.443 ± 0.074
3.209LysLys: 3.209 ± 0.084
3.995LysLeu: 3.995 ± 0.075
1.242LysMet: 1.242 ± 0.039
2.166LysAsn: 2.166 ± 0.058
2.109LysPro: 2.109 ± 0.051
1.397LysGln: 1.397 ± 0.044
2.835LysArg: 2.835 ± 0.065
2.853LysSer: 2.853 ± 0.06
2.841LysThr: 2.841 ± 0.058
3.091LysVal: 3.091 ± 0.07
0.402LysTrp: 0.402 ± 0.021
1.417LysTyr: 1.417 ± 0.045
0.0LysXaa: 0.0 ± 0.0
Leu
12.168LeuAla: 12.168 ± 0.185
2.212LeuCys: 2.212 ± 0.057
5.885LeuAsp: 5.885 ± 0.078
6.687LeuGlu: 6.687 ± 0.095
4.456LeuPhe: 4.456 ± 0.086
7.845LeuGly: 7.845 ± 0.109
2.236LeuHis: 2.236 ± 0.052
4.121LeuIle: 4.121 ± 0.084
4.57LeuLys: 4.57 ± 0.08
10.837LeuLeu: 10.837 ± 0.153
2.362LeuMet: 2.362 ± 0.055
3.004LeuAsn: 3.004 ± 0.062
5.661LeuPro: 5.661 ± 0.094
3.441LeuGln: 3.441 ± 0.067
6.189LeuArg: 6.189 ± 0.089
6.954LeuSer: 6.954 ± 0.113
5.015LeuThr: 5.015 ± 0.082
7.996LeuVal: 7.996 ± 0.106
1.236LeuTrp: 1.236 ± 0.037
2.666LeuTyr: 2.666 ± 0.052
0.0LeuXaa: 0.0 ± 0.0
Met
3.07MetAla: 3.07 ± 0.063
0.41MetCys: 0.41 ± 0.021
1.755MetAsp: 1.755 ± 0.045
1.998MetGlu: 1.998 ± 0.047
0.764MetPhe: 0.764 ± 0.032
2.231MetGly: 2.231 ± 0.055
0.635MetHis: 0.635 ± 0.025
1.033MetIle: 1.033 ± 0.036
1.224MetLys: 1.224 ± 0.041
2.708MetLeu: 2.708 ± 0.06
0.521MetMet: 0.521 ± 0.026
0.906MetAsn: 0.906 ± 0.032
1.699MetPro: 1.699 ± 0.047
1.23MetGln: 1.23 ± 0.037
1.965MetArg: 1.965 ± 0.051
1.67MetSer: 1.67 ± 0.042
1.47MetThr: 1.47 ± 0.043
1.707MetVal: 1.707 ± 0.055
0.221MetTrp: 0.221 ± 0.015
0.603MetTyr: 0.603 ± 0.027
0.0MetXaa: 0.0 ± 0.0
Asn
3.255AsnAla: 3.255 ± 0.066
0.57AsnCys: 0.57 ± 0.026
1.589AsnAsp: 1.589 ± 0.044
1.813AsnGlu: 1.813 ± 0.057
1.477AsnPhe: 1.477 ± 0.043
2.539AsnGly: 2.539 ± 0.061
0.634AsnHis: 0.634 ± 0.027
2.335AsnIle: 2.335 ± 0.067
1.46AsnLys: 1.46 ± 0.05
3.424AsnLeu: 3.424 ± 0.074
1.112AsnMet: 1.112 ± 0.041
1.337AsnAsn: 1.337 ± 0.056
2.033AsnPro: 2.033 ± 0.044
0.851AsnGln: 0.851 ± 0.037
2.01AsnArg: 2.01 ± 0.046
1.797AsnSer: 1.797 ± 0.053
1.837AsnThr: 1.837 ± 0.049
2.432AsnVal: 2.432 ± 0.051
0.394AsnTrp: 0.394 ± 0.021
1.071AsnTyr: 1.071 ± 0.04
0.0AsnXaa: 0.0 ± 0.0
Pro
4.577ProAla: 4.577 ± 0.073
0.916ProCys: 0.916 ± 0.038
3.063ProAsp: 3.063 ± 0.065
3.841ProGlu: 3.841 ± 0.076
1.892ProPhe: 1.892 ± 0.045
3.697ProGly: 3.697 ± 0.071
0.936ProHis: 0.936 ± 0.036
1.948ProIle: 1.948 ± 0.052
2.173ProLys: 2.173 ± 0.052
4.859ProLeu: 4.859 ± 0.087
1.23ProMet: 1.23 ± 0.032
1.468ProAsn: 1.468 ± 0.039
1.492ProPro: 1.492 ± 0.048
1.75ProGln: 1.75 ± 0.055
2.347ProArg: 2.347 ± 0.063
2.623ProSer: 2.623 ± 0.057
1.937ProThr: 1.937 ± 0.05
3.75ProVal: 3.75 ± 0.078
0.695ProTrp: 0.695 ± 0.026
1.405ProTyr: 1.405 ± 0.043
0.0ProXaa: 0.0 ± 0.0
Gln
3.75GlnAla: 3.75 ± 0.082
0.436GlnCys: 0.436 ± 0.022
1.863GlnAsp: 1.863 ± 0.047
2.328GlnGlu: 2.328 ± 0.06
0.87GlnPhe: 0.87 ± 0.034
3.107GlnGly: 3.107 ± 0.064
0.661GlnHis: 0.661 ± 0.029
1.752GlnIle: 1.752 ± 0.044
2.127GlnLys: 2.127 ± 0.051
2.758GlnLeu: 2.758 ± 0.059
0.883GlnMet: 0.883 ± 0.027
1.307GlnAsn: 1.307 ± 0.045
1.402GlnPro: 1.402 ± 0.051
1.225GlnGln: 1.225 ± 0.047
2.143GlnArg: 2.143 ± 0.054
1.811GlnSer: 1.811 ± 0.048
1.856GlnThr: 1.856 ± 0.046
2.025GlnVal: 2.025 ± 0.047
0.345GlnTrp: 0.345 ± 0.019
0.89GlnTyr: 0.89 ± 0.033
0.0GlnXaa: 0.0 ± 0.0
Arg
5.663ArgAla: 5.663 ± 0.091
0.915ArgCys: 0.915 ± 0.034
3.589ArgAsp: 3.589 ± 0.067
5.054ArgGlu: 5.054 ± 0.085
2.466ArgPhe: 2.466 ± 0.058
3.81ArgGly: 3.81 ± 0.071
1.546ArgHis: 1.546 ± 0.042
3.626ArgIle: 3.626 ± 0.062
3.433ArgLys: 3.433 ± 0.068
6.813ArgLeu: 6.813 ± 0.108
1.874ArgMet: 1.874 ± 0.047
2.082ArgAsn: 2.082 ± 0.051
2.654ArgPro: 2.654 ± 0.063
2.29ArgGln: 2.29 ± 0.052
3.855ArgArg: 3.855 ± 0.081
3.212ArgSer: 3.212 ± 0.064
3.191ArgThr: 3.191 ± 0.062
4.087ArgVal: 4.087 ± 0.079
0.641ArgTrp: 0.641 ± 0.029
1.848ArgTyr: 1.848 ± 0.049
0.0ArgXaa: 0.0 ± 0.0
Ser
5.09SerAla: 5.09 ± 0.085
1.197SerCys: 1.197 ± 0.04
2.764SerAsp: 2.764 ± 0.059
3.273SerGlu: 3.273 ± 0.069
2.771SerPhe: 2.771 ± 0.054
4.998SerGly: 4.998 ± 0.078
1.298SerHis: 1.298 ± 0.036
3.198SerIle: 3.198 ± 0.07
2.257SerLys: 2.257 ± 0.055
7.363SerLeu: 7.363 ± 0.102
1.789SerMet: 1.789 ± 0.041
1.668SerAsn: 1.668 ± 0.05
2.871SerPro: 2.871 ± 0.057
2.009SerGln: 2.009 ± 0.045
3.644SerArg: 3.644 ± 0.07
3.897SerSer: 3.897 ± 0.072
2.791SerThr: 2.791 ± 0.064
4.084SerVal: 4.084 ± 0.079
0.83SerTrp: 0.83 ± 0.029
1.658SerTyr: 1.658 ± 0.047
0.0SerXaa: 0.0 ± 0.0
Thr
4.693ThrAla: 4.693 ± 0.084
0.822ThrCys: 0.822 ± 0.031
2.75ThrAsp: 2.75 ± 0.053
2.708ThrGlu: 2.708 ± 0.065
2.077ThrPhe: 2.077 ± 0.05
4.654ThrGly: 4.654 ± 0.079
1.004ThrHis: 1.004 ± 0.035
3.041ThrIle: 3.041 ± 0.068
1.864ThrLys: 1.864 ± 0.049
5.92ThrLeu: 5.92 ± 0.095
1.391ThrMet: 1.391 ± 0.038
1.588ThrAsn: 1.588 ± 0.045
2.908ThrPro: 2.908 ± 0.058
1.567ThrGln: 1.567 ± 0.041
3.24ThrArg: 3.24 ± 0.062
3.23ThrSer: 3.23 ± 0.057
2.639ThrThr: 2.639 ± 0.067
3.757ThrVal: 3.757 ± 0.071
0.621ThrTrp: 0.621 ± 0.027
1.402ThrTyr: 1.402 ± 0.049
0.0ThrXaa: 0.0 ± 0.0
Val
6.264ValAla: 6.264 ± 0.097
1.49ValCys: 1.49 ± 0.045
3.657ValAsp: 3.657 ± 0.063
4.038ValGlu: 4.038 ± 0.076
2.976ValPhe: 2.976 ± 0.057
4.382ValGly: 4.382 ± 0.085
1.638ValHis: 1.638 ± 0.048
3.345ValIle: 3.345 ± 0.065
2.575ValLys: 2.575 ± 0.065
7.779ValLeu: 7.779 ± 0.108
1.648ValMet: 1.648 ± 0.045
2.261ValAsn: 2.261 ± 0.055
3.535ValPro: 3.535 ± 0.067
2.521ValGln: 2.521 ± 0.058
4.909ValArg: 4.909 ± 0.08
4.411ValSer: 4.411 ± 0.074
3.953ValThr: 3.953 ± 0.078
4.755ValVal: 4.755 ± 0.085
0.812ValTrp: 0.812 ± 0.028
1.884ValTyr: 1.884 ± 0.053
0.0ValXaa: 0.0 ± 0.0
Trp
0.926TrpAla: 0.926 ± 0.032
0.192TrpCys: 0.192 ± 0.014
0.621TrpAsp: 0.621 ± 0.027
0.795TrpGlu: 0.795 ± 0.028
0.453TrpPhe: 0.453 ± 0.022
0.827TrpGly: 0.827 ± 0.033
0.334TrpHis: 0.334 ± 0.021
0.606TrpIle: 0.606 ± 0.026
0.722TrpLys: 0.722 ± 0.027
1.44TrpLeu: 1.44 ± 0.045
0.328TrpMet: 0.328 ± 0.02
0.483TrpAsn: 0.483 ± 0.019
0.547TrpPro: 0.547 ± 0.028
0.709TrpGln: 0.709 ± 0.027
0.712TrpArg: 0.712 ± 0.029
0.592TrpSer: 0.592 ± 0.026
0.568TrpThr: 0.568 ± 0.025
0.63TrpVal: 0.63 ± 0.029
0.177TrpTrp: 0.177 ± 0.016
0.367TrpTyr: 0.367 ± 0.021
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.6TyrAla: 2.6 ± 0.056
0.493TyrCys: 0.493 ± 0.024
1.485TyrAsp: 1.485 ± 0.05
1.533TyrGlu: 1.533 ± 0.046
1.246TyrPhe: 1.246 ± 0.043
2.253TyrGly: 2.253 ± 0.056
0.605TyrHis: 0.605 ± 0.03
1.478TyrIle: 1.478 ± 0.046
1.224TyrLys: 1.224 ± 0.046
2.798TyrLeu: 2.798 ± 0.06
0.742TyrMet: 0.742 ± 0.029
1.079TyrAsn: 1.079 ± 0.04
1.325TyrPro: 1.325 ± 0.045
0.813TyrGln: 0.813 ± 0.033
1.734TyrArg: 1.734 ± 0.048
1.527TyrSer: 1.527 ± 0.041
1.699TyrThr: 1.699 ± 0.056
1.968TyrVal: 1.968 ± 0.045
0.374TyrTrp: 0.374 ± 0.021
0.904TyrTyr: 0.904 ± 0.032
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 2772 proteins (905338 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