Amino acid dipepetide frequency for Sinorhizobium sp. RAC02

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
16.392AlaAla: 16.392 ± 0.161
0.999AlaCys: 0.999 ± 0.023
6.97AlaAsp: 6.97 ± 0.059
7.715AlaGlu: 7.715 ± 0.081
4.914AlaPhe: 4.914 ± 0.054
10.915AlaGly: 10.915 ± 0.096
2.106AlaHis: 2.106 ± 0.036
6.94AlaIle: 6.94 ± 0.06
4.294AlaLys: 4.294 ± 0.061
13.125AlaLeu: 13.125 ± 0.117
3.454AlaMet: 3.454 ± 0.038
3.067AlaAsn: 3.067 ± 0.042
4.615AlaPro: 4.615 ± 0.049
3.32AlaGln: 3.32 ± 0.049
7.892AlaArg: 7.892 ± 0.076
6.349AlaSer: 6.349 ± 0.072
6.148AlaThr: 6.148 ± 0.059
8.959AlaVal: 8.959 ± 0.071
1.406AlaTrp: 1.406 ± 0.03
2.665AlaTyr: 2.665 ± 0.034
0.0AlaXaa: 0.0 ± 0.0
Cys
0.832CysAla: 0.832 ± 0.022
0.107CysCys: 0.107 ± 0.008
0.475CysAsp: 0.475 ± 0.017
0.446CysGlu: 0.446 ± 0.016
0.335CysPhe: 0.335 ± 0.011
0.869CysGly: 0.869 ± 0.025
0.212CysHis: 0.212 ± 0.01
0.407CysIle: 0.407 ± 0.016
0.191CysLys: 0.191 ± 0.011
0.784CysLeu: 0.784 ± 0.025
0.165CysMet: 0.165 ± 0.01
0.199CysAsn: 0.199 ± 0.01
0.381CysPro: 0.381 ± 0.015
0.211CysGln: 0.211 ± 0.011
0.573CysArg: 0.573 ± 0.019
0.433CysSer: 0.433 ± 0.016
0.408CysThr: 0.408 ± 0.016
0.549CysVal: 0.549 ± 0.016
0.114CysTrp: 0.114 ± 0.008
0.207CysTyr: 0.207 ± 0.011
0.0CysXaa: 0.0 ± 0.0
Asp
6.679AspAla: 6.679 ± 0.066
0.461AspCys: 0.461 ± 0.014
3.121AspAsp: 3.121 ± 0.047
3.438AspGlu: 3.438 ± 0.047
2.4AspPhe: 2.4 ± 0.035
5.307AspGly: 5.307 ± 0.064
1.248AspHis: 1.248 ± 0.026
3.4AspIle: 3.4 ± 0.046
1.856AspLys: 1.856 ± 0.037
5.877AspLeu: 5.877 ± 0.053
1.44AspMet: 1.44 ± 0.028
1.363AspAsn: 1.363 ± 0.033
3.216AspPro: 3.216 ± 0.049
1.557AspGln: 1.557 ± 0.029
4.193AspArg: 4.193 ± 0.05
2.1AspSer: 2.1 ± 0.035
2.796AspThr: 2.796 ± 0.044
4.288AspVal: 4.288 ± 0.054
0.973AspTrp: 0.973 ± 0.023
1.538AspTyr: 1.538 ± 0.032
0.0AspXaa: 0.0 ± 0.0
Glu
7.568GluAla: 7.568 ± 0.083
0.369GluCys: 0.369 ± 0.014
2.885GluAsp: 2.885 ± 0.04
3.479GluGlu: 3.479 ± 0.054
1.804GluPhe: 1.804 ± 0.029
4.449GluGly: 4.449 ± 0.05
1.137GluHis: 1.137 ± 0.024
3.674GluIle: 3.674 ± 0.05
2.76GluLys: 2.76 ± 0.045
4.932GluLeu: 4.932 ± 0.055
1.559GluMet: 1.559 ± 0.028
1.904GluAsn: 1.904 ± 0.033
2.614GluPro: 2.614 ± 0.042
2.023GluGln: 2.023 ± 0.034
4.732GluArg: 4.732 ± 0.061
2.317GluSer: 2.317 ± 0.037
3.983GluThr: 3.983 ± 0.048
3.606GluVal: 3.606 ± 0.045
0.718GluTrp: 0.718 ± 0.02
0.982GluTyr: 0.982 ± 0.024
0.0GluXaa: 0.0 ± 0.0
Phe
4.759PheAla: 4.759 ± 0.048
0.412PheCys: 0.412 ± 0.016
2.768PheAsp: 2.768 ± 0.042
2.181PheGlu: 2.181 ± 0.033
1.594PhePhe: 1.594 ± 0.032
3.801PheGly: 3.801 ± 0.051
0.782PheHis: 0.782 ± 0.021
1.903PheIle: 1.903 ± 0.034
1.154PheLys: 1.154 ± 0.027
3.708PheLeu: 3.708 ± 0.053
0.855PheMet: 0.855 ± 0.024
1.185PheAsn: 1.185 ± 0.026
1.655PhePro: 1.655 ± 0.031
1.112PheGln: 1.112 ± 0.024
2.398PheArg: 2.398 ± 0.036
2.567PheSer: 2.567 ± 0.039
2.079PheThr: 2.079 ± 0.033
3.033PheVal: 3.033 ± 0.041
0.561PheTrp: 0.561 ± 0.018
0.998PheTyr: 0.998 ± 0.022
0.0PheXaa: 0.0 ± 0.0
Gly
8.911GlyAla: 8.911 ± 0.086
0.766GlyCys: 0.766 ± 0.021
4.385GlyAsp: 4.385 ± 0.068
4.919GlyGlu: 4.919 ± 0.053
3.779GlyPhe: 3.779 ± 0.049
7.301GlyGly: 7.301 ± 0.079
1.841GlyHis: 1.841 ± 0.03
5.145GlyIle: 5.145 ± 0.065
3.729GlyLys: 3.729 ± 0.052
9.02GlyLeu: 9.02 ± 0.083
2.355GlyMet: 2.355 ± 0.039
2.441GlyAsn: 2.441 ± 0.049
3.155GlyPro: 3.155 ± 0.045
2.614GlyGln: 2.614 ± 0.037
5.846GlyArg: 5.846 ± 0.056
4.677GlySer: 4.677 ± 0.058
4.777GlyThr: 4.777 ± 0.065
6.174GlyVal: 6.174 ± 0.063
1.31GlyTrp: 1.31 ± 0.027
2.373GlyTyr: 2.373 ± 0.038
0.0GlyXaa: 0.0 ± 0.0
His
2.292HisAla: 2.292 ± 0.036
0.219HisCys: 0.219 ± 0.01
1.265HisAsp: 1.265 ± 0.029
1.027HisGlu: 1.027 ± 0.025
0.925HisPhe: 0.925 ± 0.023
1.889HisGly: 1.889 ± 0.027
0.565HisHis: 0.565 ± 0.02
1.02HisIle: 1.02 ± 0.022
0.53HisLys: 0.53 ± 0.015
2.001HisLeu: 2.001 ± 0.035
0.548HisMet: 0.548 ± 0.017
0.476HisAsn: 0.476 ± 0.016
1.215HisPro: 1.215 ± 0.026
0.556HisGln: 0.556 ± 0.016
1.366HisArg: 1.366 ± 0.027
0.969HisSer: 0.969 ± 0.022
0.791HisThr: 0.791 ± 0.019
1.481HisVal: 1.481 ± 0.03
0.303HisTrp: 0.303 ± 0.012
0.595HisTyr: 0.595 ± 0.017
0.0HisXaa: 0.0 ± 0.0
Ile
7.999IleAla: 7.999 ± 0.076
0.55IleCys: 0.55 ± 0.019
3.851IleAsp: 3.851 ± 0.051
3.671IleGlu: 3.671 ± 0.045
1.907IlePhe: 1.907 ± 0.032
5.304IleGly: 5.304 ± 0.06
0.979IleHis: 0.979 ± 0.019
2.632IleIle: 2.632 ± 0.046
1.581IleLys: 1.581 ± 0.03
4.995IleLeu: 4.995 ± 0.054
1.05IleMet: 1.05 ± 0.026
1.569IleAsn: 1.569 ± 0.031
2.358IlePro: 2.358 ± 0.038
1.211IleGln: 1.211 ± 0.024
3.454IleArg: 3.454 ± 0.04
3.182IleSer: 3.182 ± 0.051
2.899IleThr: 2.899 ± 0.039
4.667IleVal: 4.667 ± 0.052
0.622IleTrp: 0.622 ± 0.018
1.232IleTyr: 1.232 ± 0.026
0.0IleXaa: 0.0 ± 0.0
Lys
4.935LysAla: 4.935 ± 0.064
0.154LysCys: 0.154 ± 0.009
2.031LysAsp: 2.031 ± 0.035
1.824LysGlu: 1.824 ± 0.033
0.947LysPhe: 0.947 ± 0.024
2.905LysGly: 2.905 ± 0.04
0.661LysHis: 0.661 ± 0.019
1.946LysIle: 1.946 ± 0.035
1.456LysLys: 1.456 ± 0.034
3.503LysLeu: 3.503 ± 0.05
0.856LysMet: 0.856 ± 0.024
1.022LysAsn: 1.022 ± 0.023
2.186LysPro: 2.186 ± 0.036
1.09LysGln: 1.09 ± 0.033
2.453LysArg: 2.453 ± 0.038
2.061LysSer: 2.061 ± 0.035
2.279LysThr: 2.279 ± 0.038
2.621LysVal: 2.621 ± 0.041
0.382LysTrp: 0.382 ± 0.015
0.661LysTyr: 0.661 ± 0.021
0.0LysXaa: 0.0 ± 0.0
Leu
13.292LeuAla: 13.292 ± 0.106
0.821LeuCys: 0.821 ± 0.022
5.97LeuAsp: 5.97 ± 0.055
5.233LeuGlu: 5.233 ± 0.054
3.878LeuPhe: 3.878 ± 0.05
8.156LeuGly: 8.156 ± 0.071
1.778LeuHis: 1.778 ± 0.032
5.167LeuIle: 5.167 ± 0.061
4.022LeuLys: 4.022 ± 0.052
9.395LeuLeu: 9.395 ± 0.095
2.409LeuMet: 2.409 ± 0.038
2.617LeuAsn: 2.617 ± 0.038
5.37LeuPro: 5.37 ± 0.055
2.624LeuGln: 2.624 ± 0.035
6.045LeuArg: 6.045 ± 0.071
6.976LeuSer: 6.976 ± 0.078
5.64LeuThr: 5.64 ± 0.066
7.696LeuVal: 7.696 ± 0.06
1.121LeuTrp: 1.121 ± 0.03
2.141LeuTyr: 2.141 ± 0.035
0.0LeuXaa: 0.0 ± 0.0
Met
3.126MetAla: 3.126 ± 0.039
0.142MetCys: 0.142 ± 0.009
1.172MetAsp: 1.172 ± 0.023
1.18MetGlu: 1.18 ± 0.023
0.729MetPhe: 0.729 ± 0.02
1.749MetGly: 1.749 ± 0.032
0.471MetHis: 0.471 ± 0.014
1.455MetIle: 1.455 ± 0.029
1.107MetLys: 1.107 ± 0.028
2.566MetLeu: 2.566 ± 0.036
0.668MetMet: 0.668 ± 0.022
0.837MetAsn: 0.837 ± 0.021
1.49MetPro: 1.49 ± 0.03
0.868MetGln: 0.868 ± 0.022
1.752MetArg: 1.752 ± 0.032
1.656MetSer: 1.656 ± 0.031
2.025MetThr: 2.025 ± 0.029
1.763MetVal: 1.763 ± 0.027
0.2MetTrp: 0.2 ± 0.01
0.301MetTyr: 0.301 ± 0.012
0.0MetXaa: 0.0 ± 0.0
Asn
3.372AsnAla: 3.372 ± 0.042
0.226AsnCys: 0.226 ± 0.011
1.639AsnAsp: 1.639 ± 0.043
1.325AsnGlu: 1.325 ± 0.023
1.03AsnPhe: 1.03 ± 0.023
2.659AsnGly: 2.659 ± 0.041
0.584AsnHis: 0.584 ± 0.017
1.502AsnIle: 1.502 ± 0.028
0.741AsnLys: 0.741 ± 0.02
2.669AsnLeu: 2.669 ± 0.042
0.664AsnMet: 0.664 ± 0.014
0.759AsnAsn: 0.759 ± 0.024
1.873AsnPro: 1.873 ± 0.034
0.799AsnGln: 0.799 ± 0.02
1.918AsnArg: 1.918 ± 0.031
1.33AsnSer: 1.33 ± 0.027
1.401AsnThr: 1.401 ± 0.03
2.034AsnVal: 2.034 ± 0.028
0.452AsnTrp: 0.452 ± 0.015
0.692AsnTyr: 0.692 ± 0.019
0.0AsnXaa: 0.0 ± 0.0
Pro
5.735ProAla: 5.735 ± 0.064
0.278ProCys: 0.278 ± 0.011
3.349ProAsp: 3.349 ± 0.048
3.53ProGlu: 3.53 ± 0.039
2.018ProPhe: 2.018 ± 0.028
4.034ProGly: 4.034 ± 0.048
1.025ProHis: 1.025 ± 0.021
2.391ProIle: 2.391 ± 0.035
1.706ProLys: 1.706 ± 0.03
4.554ProLeu: 4.554 ± 0.053
1.16ProMet: 1.16 ± 0.023
1.298ProAsn: 1.298 ± 0.026
2.001ProPro: 2.001 ± 0.036
1.439ProGln: 1.439 ± 0.028
2.479ProArg: 2.479 ± 0.039
2.595ProSer: 2.595 ± 0.036
2.459ProThr: 2.459 ± 0.034
4.163ProVal: 4.163 ± 0.046
0.643ProTrp: 0.643 ± 0.019
1.192ProTyr: 1.192 ± 0.025
0.0ProXaa: 0.0 ± 0.0
Gln
3.676GlnAla: 3.676 ± 0.045
0.179GlnCys: 0.179 ± 0.01
1.371GlnAsp: 1.371 ± 0.027
1.507GlnGlu: 1.507 ± 0.03
1.048GlnPhe: 1.048 ± 0.023
2.082GlnGly: 2.082 ± 0.035
0.611GlnHis: 0.611 ± 0.019
1.779GlnIle: 1.779 ± 0.047
1.221GlnLys: 1.221 ± 0.032
2.664GlnLeu: 2.664 ± 0.042
0.851GlnMet: 0.851 ± 0.021
0.865GlnAsn: 0.865 ± 0.024
1.557GlnPro: 1.557 ± 0.031
1.206GlnGln: 1.206 ± 0.034
2.134GlnArg: 2.134 ± 0.035
1.747GlnSer: 1.747 ± 0.037
1.714GlnThr: 1.714 ± 0.03
2.08GlnVal: 2.08 ± 0.037
0.366GlnTrp: 0.366 ± 0.015
0.598GlnTyr: 0.598 ± 0.018
0.0GlnXaa: 0.0 ± 0.0
Arg
7.113ArgAla: 7.113 ± 0.062
0.441ArgCys: 0.441 ± 0.013
3.946ArgAsp: 3.946 ± 0.043
3.891ArgGlu: 3.891 ± 0.053
2.914ArgPhe: 2.914 ± 0.038
4.369ArgGly: 4.369 ± 0.046
1.665ArgHis: 1.665 ± 0.031
4.072ArgIle: 4.072 ± 0.046
2.559ArgLys: 2.559 ± 0.039
7.329ArgLeu: 7.329 ± 0.071
1.792ArgMet: 1.792 ± 0.028
1.964ArgAsn: 1.964 ± 0.035
3.177ArgPro: 3.177 ± 0.042
2.455ArgGln: 2.455 ± 0.043
5.056ArgArg: 5.056 ± 0.069
3.545ArgSer: 3.545 ± 0.037
3.371ArgThr: 3.371 ± 0.048
4.358ArgVal: 4.358 ± 0.042
0.854ArgTrp: 0.854 ± 0.022
1.662ArgTyr: 1.662 ± 0.029
0.0ArgXaa: 0.0 ± 0.0
Ser
6.33SerAla: 6.33 ± 0.072
0.377SerCys: 0.377 ± 0.014
2.994SerAsp: 2.994 ± 0.05
2.91SerGlu: 2.91 ± 0.038
2.443SerPhe: 2.443 ± 0.039
5.85SerGly: 5.85 ± 0.064
1.15SerHis: 1.15 ± 0.025
3.071SerIle: 3.071 ± 0.045
1.688SerLys: 1.688 ± 0.032
5.63SerLeu: 5.63 ± 0.065
1.375SerMet: 1.375 ± 0.025
1.494SerAsn: 1.494 ± 0.026
2.675SerPro: 2.675 ± 0.034
1.535SerGln: 1.535 ± 0.026
3.617SerArg: 3.617 ± 0.045
3.025SerSer: 3.025 ± 0.054
2.935SerThr: 2.935 ± 0.051
4.14SerVal: 4.14 ± 0.05
0.696SerTrp: 0.696 ± 0.019
1.393SerTyr: 1.393 ± 0.025
0.0SerXaa: 0.0 ± 0.0
Thr
6.472ThrAla: 6.472 ± 0.07
0.41ThrCys: 0.41 ± 0.014
2.925ThrAsp: 2.925 ± 0.037
2.79ThrGlu: 2.79 ± 0.039
2.284ThrPhe: 2.284 ± 0.03
5.27ThrGly: 5.27 ± 0.065
1.03ThrHis: 1.03 ± 0.023
3.284ThrIle: 3.284 ± 0.044
1.683ThrLys: 1.683 ± 0.032
6.037ThrLeu: 6.037 ± 0.058
1.354ThrMet: 1.354 ± 0.029
1.404ThrAsn: 1.404 ± 0.028
3.098ThrPro: 3.098 ± 0.042
1.391ThrGln: 1.391 ± 0.029
3.235ThrArg: 3.235 ± 0.044
2.953ThrSer: 2.953 ± 0.044
3.137ThrThr: 3.137 ± 0.048
4.709ThrVal: 4.709 ± 0.046
0.656ThrTrp: 0.656 ± 0.019
1.29ThrTyr: 1.29 ± 0.024
0.0ThrXaa: 0.0 ± 0.0
Val
9.077ValAla: 9.077 ± 0.086
0.61ValCys: 0.61 ± 0.02
4.078ValAsp: 4.078 ± 0.044
4.574ValGlu: 4.574 ± 0.051
3.0ValPhe: 3.0 ± 0.042
5.576ValGly: 5.576 ± 0.057
1.402ValHis: 1.402 ± 0.029
4.223ValIle: 4.223 ± 0.046
2.514ValLys: 2.514 ± 0.039
7.678ValLeu: 7.678 ± 0.068
1.862ValMet: 1.862 ± 0.032
2.123ValAsn: 2.123 ± 0.036
3.626ValPro: 3.626 ± 0.04
1.922ValGln: 1.922 ± 0.034
4.663ValArg: 4.663 ± 0.053
4.784ValSer: 4.784 ± 0.055
4.662ValThr: 4.662 ± 0.056
6.037ValVal: 6.037 ± 0.068
0.853ValTrp: 0.853 ± 0.022
1.507ValTyr: 1.507 ± 0.028
0.0ValXaa: 0.0 ± 0.0
Trp
1.145TrpAla: 1.145 ± 0.027
0.129TrpCys: 0.129 ± 0.008
0.605TrpAsp: 0.605 ± 0.017
0.557TrpGlu: 0.557 ± 0.018
0.55TrpPhe: 0.55 ± 0.017
0.818TrpGly: 0.818 ± 0.019
0.315TrpHis: 0.315 ± 0.013
0.67TrpIle: 0.67 ± 0.023
0.509TrpLys: 0.509 ± 0.017
1.571TrpLeu: 1.571 ± 0.034
0.359TrpMet: 0.359 ± 0.015
0.46TrpAsn: 0.46 ± 0.016
0.665TrpPro: 0.665 ± 0.02
0.587TrpGln: 0.587 ± 0.018
0.997TrpArg: 0.997 ± 0.025
0.81TrpSer: 0.81 ± 0.021
0.771TrpThr: 0.771 ± 0.023
0.75TrpVal: 0.75 ± 0.021
0.217TrpTrp: 0.217 ± 0.011
0.318TrpTyr: 0.318 ± 0.014
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.54TyrAla: 2.54 ± 0.038
0.248TyrCys: 0.248 ± 0.012
1.452TyrAsp: 1.452 ± 0.03
1.299TyrGlu: 1.299 ± 0.027
1.005TyrPhe: 1.005 ± 0.022
2.217TyrGly: 2.217 ± 0.037
0.473TyrHis: 0.473 ± 0.016
1.033TyrIle: 1.033 ± 0.025
0.672TyrLys: 0.672 ± 0.021
2.311TyrLeu: 2.311 ± 0.04
0.479TyrMet: 0.479 ± 0.017
0.619TyrAsn: 0.619 ± 0.02
1.12TyrPro: 1.12 ± 0.024
0.738TyrGln: 0.738 ± 0.02
1.73TyrArg: 1.73 ± 0.033
1.25TyrSer: 1.25 ± 0.029
1.138TyrThr: 1.138 ± 0.023
1.664TyrVal: 1.664 ± 0.029
0.358TyrTrp: 0.358 ± 0.013
0.603TyrTyr: 0.603 ± 0.02
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 6245 proteins (1946794 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