Amino acid dipepetide frequency for Pseudoxanthomonas sp. Root65

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
17.554AlaAla: 17.554 ± 0.184
1.238AlaCys: 1.238 ± 0.036
7.755AlaAsp: 7.755 ± 0.096
6.624AlaGlu: 6.624 ± 0.09
4.232AlaPhe: 4.232 ± 0.071
11.186AlaGly: 11.186 ± 0.114
2.669AlaHis: 2.669 ± 0.056
5.286AlaIle: 5.286 ± 0.076
3.427AlaLys: 3.427 ± 0.078
15.516AlaLeu: 15.516 ± 0.147
3.434AlaMet: 3.434 ± 0.055
2.79AlaAsn: 2.79 ± 0.052
6.499AlaPro: 6.499 ± 0.094
5.247AlaGln: 5.247 ± 0.071
9.812AlaArg: 9.812 ± 0.129
6.752AlaSer: 6.752 ± 0.103
6.85AlaThr: 6.85 ± 0.104
8.992AlaVal: 8.992 ± 0.104
2.209AlaTrp: 2.209 ± 0.057
2.543AlaTyr: 2.543 ± 0.044
0.0AlaXaa: 0.0 ± 0.0
Cys
0.915CysAla: 0.915 ± 0.034
0.078CysCys: 0.078 ± 0.009
0.464CysAsp: 0.464 ± 0.021
0.396CysGlu: 0.396 ± 0.018
0.251CysPhe: 0.251 ± 0.016
0.866CysGly: 0.866 ± 0.028
0.226CysHis: 0.226 ± 0.014
0.327CysIle: 0.327 ± 0.019
0.189CysLys: 0.189 ± 0.013
0.791CysLeu: 0.791 ± 0.025
0.123CysMet: 0.123 ± 0.011
0.184CysAsn: 0.184 ± 0.013
0.354CysPro: 0.354 ± 0.021
0.208CysGln: 0.208 ± 0.014
0.566CysArg: 0.566 ± 0.026
0.403CysSer: 0.403 ± 0.021
0.486CysThr: 0.486 ± 0.027
0.651CysVal: 0.651 ± 0.029
0.115CysTrp: 0.115 ± 0.011
0.178CysTyr: 0.178 ± 0.014
0.0CysXaa: 0.0 ± 0.0
Asp
9.319AspAla: 9.319 ± 0.112
0.412AspCys: 0.412 ± 0.018
3.87AspAsp: 3.87 ± 0.065
3.491AspGlu: 3.491 ± 0.065
2.036AspPhe: 2.036 ± 0.044
6.122AspGly: 6.122 ± 0.083
1.204AspHis: 1.204 ± 0.034
2.528AspIle: 2.528 ± 0.047
1.515AspLys: 1.515 ± 0.047
5.937AspLeu: 5.937 ± 0.077
1.132AspMet: 1.132 ± 0.035
1.329AspAsn: 1.329 ± 0.04
3.294AspPro: 3.294 ± 0.055
1.662AspGln: 1.662 ± 0.042
4.177AspArg: 4.177 ± 0.069
2.323AspSer: 2.323 ± 0.042
3.186AspThr: 3.186 ± 0.06
4.731AspVal: 4.731 ± 0.065
1.052AspTrp: 1.052 ± 0.031
1.74AspTyr: 1.74 ± 0.043
0.0AspXaa: 0.0 ± 0.0
Glu
6.978GluAla: 6.978 ± 0.082
0.315GluCys: 0.315 ± 0.016
2.702GluAsp: 2.702 ± 0.055
2.499GluGlu: 2.499 ± 0.058
1.671GluPhe: 1.671 ± 0.04
4.178GluGly: 4.178 ± 0.063
1.344GluHis: 1.344 ± 0.037
2.457GluIle: 2.457 ± 0.052
1.618GluLys: 1.618 ± 0.043
5.56GluLeu: 5.56 ± 0.077
1.088GluMet: 1.088 ± 0.033
1.217GluAsn: 1.217 ± 0.036
2.371GluPro: 2.371 ± 0.048
2.634GluGln: 2.634 ± 0.057
4.991GluArg: 4.991 ± 0.081
2.377GluSer: 2.377 ± 0.046
2.784GluThr: 2.784 ± 0.05
3.747GluVal: 3.747 ± 0.065
0.705GluTrp: 0.705 ± 0.025
1.161GluTyr: 1.161 ± 0.037
0.0GluXaa: 0.0 ± 0.0
Phe
4.425PheAla: 4.425 ± 0.07
0.328PheCys: 0.328 ± 0.018
2.716PheAsp: 2.716 ± 0.046
1.84PheGlu: 1.84 ± 0.042
1.218PhePhe: 1.218 ± 0.035
3.341PheGly: 3.341 ± 0.068
0.778PheHis: 0.778 ± 0.027
1.312PheIle: 1.312 ± 0.036
0.921PheLys: 0.921 ± 0.036
3.069PheLeu: 3.069 ± 0.057
0.623PheMet: 0.623 ± 0.022
1.037PheAsn: 1.037 ± 0.033
1.405PhePro: 1.405 ± 0.034
0.943PheGln: 0.943 ± 0.033
2.193PheArg: 2.193 ± 0.05
1.897PheSer: 1.897 ± 0.041
1.804PheThr: 1.804 ± 0.047
2.62PheVal: 2.62 ± 0.048
0.495PheTrp: 0.495 ± 0.028
0.86PheTyr: 0.86 ± 0.027
0.0PheXaa: 0.0 ± 0.0
Gly
9.127GlyAla: 9.127 ± 0.135
0.788GlyCys: 0.788 ± 0.028
5.226GlyAsp: 5.226 ± 0.073
4.894GlyGlu: 4.894 ± 0.066
3.464GlyPhe: 3.464 ± 0.057
7.278GlyGly: 7.278 ± 0.11
2.084GlyHis: 2.084 ± 0.045
3.956GlyIle: 3.956 ± 0.06
3.097GlyLys: 3.097 ± 0.068
8.679GlyLeu: 8.679 ± 0.095
2.322GlyMet: 2.322 ± 0.046
2.318GlyAsn: 2.318 ± 0.055
3.019GlyPro: 3.019 ± 0.059
3.115GlyGln: 3.115 ± 0.057
6.166GlyArg: 6.166 ± 0.082
4.405GlySer: 4.405 ± 0.075
4.731GlyThr: 4.731 ± 0.089
6.653GlyVal: 6.653 ± 0.098
1.693GlyTrp: 1.693 ± 0.042
2.456GlyTyr: 2.456 ± 0.051
0.0GlyXaa: 0.0 ± 0.0
His
3.271HisAla: 3.271 ± 0.057
0.224HisCys: 0.224 ± 0.015
1.455HisAsp: 1.455 ± 0.038
1.141HisGlu: 1.141 ± 0.031
0.797HisPhe: 0.797 ± 0.026
2.26HisGly: 2.26 ± 0.054
0.646HisHis: 0.646 ± 0.03
0.75HisIle: 0.75 ± 0.027
0.431HisLys: 0.431 ± 0.02
2.199HisLeu: 2.199 ± 0.047
0.392HisMet: 0.392 ± 0.018
0.48HisAsn: 0.48 ± 0.021
1.439HisPro: 1.439 ± 0.032
0.661HisGln: 0.661 ± 0.023
1.753HisArg: 1.753 ± 0.041
0.869HisSer: 0.869 ± 0.026
0.971HisThr: 0.971 ± 0.036
1.724HisVal: 1.724 ± 0.044
0.461HisTrp: 0.461 ± 0.02
0.654HisTyr: 0.654 ± 0.022
0.0HisXaa: 0.0 ± 0.0
Ile
6.464IleAla: 6.464 ± 0.082
0.33IleCys: 0.33 ± 0.019
3.203IleAsp: 3.203 ± 0.055
2.854IleGlu: 2.854 ± 0.054
1.055IlePhe: 1.055 ± 0.033
4.144IleGly: 4.144 ± 0.067
0.853IleHis: 0.853 ± 0.03
1.346IleIle: 1.346 ± 0.046
1.083IleLys: 1.083 ± 0.034
2.923IleLeu: 2.923 ± 0.053
0.493IleMet: 0.493 ± 0.019
1.244IleAsn: 1.244 ± 0.039
2.071IlePro: 2.071 ± 0.051
1.098IleGln: 1.098 ± 0.032
2.737IleArg: 2.737 ± 0.054
1.913IleSer: 1.913 ± 0.047
2.282IleThr: 2.282 ± 0.055
3.32IleVal: 3.32 ± 0.063
0.369IleTrp: 0.369 ± 0.022
0.808IleTyr: 0.808 ± 0.028
0.0IleXaa: 0.0 ± 0.0
Lys
3.47LysAla: 3.47 ± 0.072
0.125LysCys: 0.125 ± 0.011
1.543LysAsp: 1.543 ± 0.045
1.274LysGlu: 1.274 ± 0.039
0.754LysPhe: 0.754 ± 0.027
2.056LysGly: 2.056 ± 0.04
0.61LysHis: 0.61 ± 0.025
1.175LysIle: 1.175 ± 0.032
1.106LysLys: 1.106 ± 0.057
2.927LysLeu: 2.927 ± 0.061
0.617LysMet: 0.617 ± 0.027
0.68LysAsn: 0.68 ± 0.024
1.881LysPro: 1.881 ± 0.05
1.226LysGln: 1.226 ± 0.037
2.134LysArg: 2.134 ± 0.048
1.269LysSer: 1.269 ± 0.036
1.563LysThr: 1.563 ± 0.043
2.162LysVal: 2.162 ± 0.059
0.268LysTrp: 0.268 ± 0.017
0.616LysTyr: 0.616 ± 0.025
0.0LysXaa: 0.0 ± 0.0
Leu
15.142LeuAla: 15.142 ± 0.137
0.882LeuCys: 0.882 ± 0.025
6.742LeuAsp: 6.742 ± 0.094
5.09LeuGlu: 5.09 ± 0.083
3.372LeuPhe: 3.372 ± 0.056
8.483LeuGly: 8.483 ± 0.091
2.412LeuHis: 2.412 ± 0.054
3.718LeuIle: 3.718 ± 0.057
3.114LeuLys: 3.114 ± 0.065
11.794LeuLeu: 11.794 ± 0.156
2.173LeuMet: 2.173 ± 0.046
2.253LeuAsn: 2.253 ± 0.045
6.618LeuPro: 6.618 ± 0.09
4.097LeuGln: 4.097 ± 0.071
8.58LeuArg: 8.58 ± 0.102
5.878LeuSer: 5.878 ± 0.073
5.13LeuThr: 5.13 ± 0.082
8.074LeuVal: 8.074 ± 0.098
1.417LeuTrp: 1.417 ± 0.038
2.17LeuTyr: 2.17 ± 0.048
0.001LeuXaa: 0.001 ± 0.001
Met
2.841MetAla: 2.841 ± 0.048
0.123MetCys: 0.123 ± 0.01
1.13MetAsp: 1.13 ± 0.035
0.975MetGlu: 0.975 ± 0.031
0.669MetPhe: 0.669 ± 0.026
1.594MetGly: 1.594 ± 0.04
0.435MetHis: 0.435 ± 0.019
0.836MetIle: 0.836 ± 0.029
0.805MetLys: 0.805 ± 0.028
2.343MetLeu: 2.343 ± 0.05
0.48MetMet: 0.48 ± 0.024
0.62MetAsn: 0.62 ± 0.025
1.48MetPro: 1.48 ± 0.035
0.921MetGln: 0.921 ± 0.03
1.745MetArg: 1.745 ± 0.046
1.472MetSer: 1.472 ± 0.033
1.446MetThr: 1.446 ± 0.034
1.443MetVal: 1.443 ± 0.039
0.222MetTrp: 0.222 ± 0.016
0.354MetTyr: 0.354 ± 0.016
0.0MetXaa: 0.0 ± 0.0
Asn
3.255AsnAla: 3.255 ± 0.053
0.185AsnCys: 0.185 ± 0.013
1.416AsnAsp: 1.416 ± 0.038
1.162AsnGlu: 1.162 ± 0.032
0.813AsnPhe: 0.813 ± 0.029
2.338AsnGly: 2.338 ± 0.056
0.477AsnHis: 0.477 ± 0.02
1.051AsnIle: 1.051 ± 0.033
0.594AsnLys: 0.594 ± 0.025
2.335AsnLeu: 2.335 ± 0.049
0.406AsnMet: 0.406 ± 0.018
0.679AsnAsn: 0.679 ± 0.037
1.722AsnPro: 1.722 ± 0.042
0.709AsnGln: 0.709 ± 0.028
1.66AsnArg: 1.66 ± 0.039
1.043AsnSer: 1.043 ± 0.041
1.324AsnThr: 1.324 ± 0.042
1.851AsnVal: 1.851 ± 0.04
0.356AsnTrp: 0.356 ± 0.02
0.623AsnTyr: 0.623 ± 0.025
0.0AsnXaa: 0.0 ± 0.0
Pro
7.545ProAla: 7.545 ± 0.109
0.293ProCys: 0.293 ± 0.016
3.679ProAsp: 3.679 ± 0.065
3.156ProGlu: 3.156 ± 0.047
1.677ProPhe: 1.677 ± 0.037
4.635ProGly: 4.635 ± 0.078
1.14ProHis: 1.14 ± 0.032
1.759ProIle: 1.759 ± 0.04
1.344ProLys: 1.344 ± 0.042
5.429ProLeu: 5.429 ± 0.072
1.32ProMet: 1.32 ± 0.039
1.082ProAsn: 1.082 ± 0.034
2.97ProPro: 2.97 ± 0.081
2.018ProGln: 2.018 ± 0.051
3.526ProArg: 3.526 ± 0.064
2.748ProSer: 2.748 ± 0.059
2.655ProThr: 2.655 ± 0.053
4.504ProVal: 4.504 ± 0.072
0.9ProTrp: 0.9 ± 0.027
1.176ProTyr: 1.176 ± 0.031
0.0ProXaa: 0.0 ± 0.0
Gln
5.506GlnAla: 5.506 ± 0.079
0.252GlnCys: 0.252 ± 0.016
1.757GlnAsp: 1.757 ± 0.04
1.565GlnGlu: 1.565 ± 0.05
1.082GlnPhe: 1.082 ± 0.035
2.936GlnGly: 2.936 ± 0.045
0.878GlnHis: 0.878 ± 0.028
1.443GlnIle: 1.443 ± 0.038
0.952GlnLys: 0.952 ± 0.031
3.874GlnLeu: 3.874 ± 0.07
0.792GlnMet: 0.792 ± 0.026
0.737GlnAsn: 0.737 ± 0.027
2.121GlnPro: 2.121 ± 0.047
1.914GlnGln: 1.914 ± 0.048
3.762GlnArg: 3.762 ± 0.067
1.693GlnSer: 1.693 ± 0.04
1.589GlnThr: 1.589 ± 0.037
3.084GlnVal: 3.084 ± 0.051
0.566GlnTrp: 0.566 ± 0.023
0.787GlnTyr: 0.787 ± 0.028
0.0GlnXaa: 0.0 ± 0.0
Arg
8.458ArgAla: 8.458 ± 0.114
0.498ArgCys: 0.498 ± 0.021
4.945ArgAsp: 4.945 ± 0.077
4.735ArgGlu: 4.735 ± 0.074
2.97ArgPhe: 2.97 ± 0.044
5.278ArgGly: 5.278 ± 0.081
2.088ArgHis: 2.088 ± 0.046
3.88ArgIle: 3.88 ± 0.06
1.981ArgLys: 1.981 ± 0.046
8.44ArgLeu: 8.44 ± 0.104
2.031ArgMet: 2.031 ± 0.045
1.908ArgAsn: 1.908 ± 0.04
3.381ArgPro: 3.381 ± 0.064
2.979ArgGln: 2.979 ± 0.063
6.03ArgArg: 6.03 ± 0.103
3.505ArgSer: 3.505 ± 0.062
3.742ArgThr: 3.742 ± 0.058
5.78ArgVal: 5.78 ± 0.077
1.455ArgTrp: 1.455 ± 0.038
2.189ArgTyr: 2.189 ± 0.043
0.0ArgXaa: 0.0 ± 0.0
Ser
5.964SerAla: 5.964 ± 0.079
0.361SerCys: 0.361 ± 0.02
2.67SerAsp: 2.67 ± 0.05
2.395SerGlu: 2.395 ± 0.049
1.828SerPhe: 1.828 ± 0.036
4.96SerGly: 4.96 ± 0.084
1.073SerHis: 1.073 ± 0.034
2.003SerIle: 2.003 ± 0.044
1.318SerLys: 1.318 ± 0.038
5.529SerLeu: 5.529 ± 0.076
1.052SerMet: 1.052 ± 0.032
1.257SerAsn: 1.257 ± 0.036
3.021SerPro: 3.021 ± 0.059
1.715SerGln: 1.715 ± 0.038
3.639SerArg: 3.639 ± 0.058
2.677SerSer: 2.677 ± 0.057
2.732SerThr: 2.732 ± 0.05
3.753SerVal: 3.753 ± 0.066
0.723SerTrp: 0.723 ± 0.028
1.224SerTyr: 1.224 ± 0.037
0.0SerXaa: 0.0 ± 0.0
Thr
6.239ThrAla: 6.239 ± 0.093
0.386ThrCys: 0.386 ± 0.022
2.788ThrAsp: 2.788 ± 0.049
2.254ThrGlu: 2.254 ± 0.046
1.765ThrPhe: 1.765 ± 0.047
4.939ThrGly: 4.939 ± 0.083
1.194ThrHis: 1.194 ± 0.032
2.001ThrIle: 2.001 ± 0.048
0.973ThrLys: 0.973 ± 0.029
6.737ThrLeu: 6.737 ± 0.095
0.956ThrMet: 0.956 ± 0.027
1.106ThrAsn: 1.106 ± 0.039
3.835ThrPro: 3.835 ± 0.064
1.831ThrGln: 1.831 ± 0.043
3.697ThrArg: 3.697 ± 0.059
2.507ThrSer: 2.507 ± 0.052
2.984ThrThr: 2.984 ± 0.067
4.284ThrVal: 4.284 ± 0.078
0.779ThrTrp: 0.779 ± 0.025
1.217ThrTyr: 1.217 ± 0.034
0.0ThrXaa: 0.0 ± 0.0
Val
9.887ValAla: 9.887 ± 0.115
0.63ValCys: 0.63 ± 0.023
4.794ValAsp: 4.794 ± 0.076
4.287ValGlu: 4.287 ± 0.072
2.703ValPhe: 2.703 ± 0.05
5.78ValGly: 5.78 ± 0.088
1.623ValHis: 1.623 ± 0.043
3.322ValIle: 3.322 ± 0.062
1.974ValLys: 1.974 ± 0.052
8.479ValLeu: 8.479 ± 0.101
1.715ValMet: 1.715 ± 0.042
1.975ValAsn: 1.975 ± 0.046
4.105ValPro: 4.105 ± 0.064
2.638ValGln: 2.638 ± 0.05
5.519ValArg: 5.519 ± 0.07
4.128ValSer: 4.128 ± 0.069
4.056ValThr: 4.056 ± 0.076
6.618ValVal: 6.618 ± 0.099
0.991ValTrp: 0.991 ± 0.033
1.598ValTyr: 1.598 ± 0.036
0.0ValXaa: 0.0 ± 0.0
Trp
1.319TrpAla: 1.319 ± 0.041
0.152TrpCys: 0.152 ± 0.012
0.737TrpAsp: 0.737 ± 0.023
0.602TrpGlu: 0.602 ± 0.024
0.596TrpPhe: 0.596 ± 0.024
0.94TrpGly: 0.94 ± 0.031
0.372TrpHis: 0.372 ± 0.018
0.707TrpIle: 0.707 ± 0.024
0.491TrpLys: 0.491 ± 0.022
2.18TrpLeu: 2.18 ± 0.051
0.444TrpMet: 0.444 ± 0.021
0.48TrpAsn: 0.48 ± 0.02
0.776TrpPro: 0.776 ± 0.028
0.813TrpGln: 0.813 ± 0.029
1.487TrpArg: 1.487 ± 0.037
0.87TrpSer: 0.87 ± 0.03
0.8TrpThr: 0.8 ± 0.027
1.056TrpVal: 1.056 ± 0.03
0.34TrpTrp: 0.34 ± 0.021
0.35TrpTyr: 0.35 ± 0.019
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.938TyrAla: 2.938 ± 0.053
0.172TyrCys: 0.172 ± 0.014
1.468TyrAsp: 1.468 ± 0.038
1.164TyrGlu: 1.164 ± 0.032
0.87TyrPhe: 0.87 ± 0.027
2.159TyrGly: 2.159 ± 0.045
0.471TyrHis: 0.471 ± 0.017
0.734TyrIle: 0.734 ± 0.028
0.524TyrLys: 0.524 ± 0.021
2.4TyrLeu: 2.4 ± 0.044
0.34TyrMet: 0.34 ± 0.019
0.623TyrAsn: 0.623 ± 0.026
1.191TyrPro: 1.191 ± 0.031
0.86TyrGln: 0.86 ± 0.026
2.101TyrArg: 2.101 ± 0.041
1.162TyrSer: 1.162 ± 0.033
1.354TyrThr: 1.354 ± 0.039
1.777TyrVal: 1.777 ± 0.043
0.396TyrTrp: 0.396 ± 0.022
0.638TyrTyr: 0.638 ± 0.026
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
0.001XaaVal: 0.001 ± 0.001
0.0XaaTrp: 0.0 ± 0.0
0.0XaaTyr: 0.0 ± 0.0
0.0XaaXaa: 0.0 ± 0.0
Statistics based on 3422 proteins (1126097 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