Amino acid dipepetide frequency for bacterium 1xD8-6

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
6.874AlaAla: 6.874 ± 0.111
1.022AlaCys: 1.022 ± 0.03
4.448AlaAsp: 4.448 ± 0.063
5.609AlaGlu: 5.609 ± 0.076
2.958AlaPhe: 2.958 ± 0.053
6.078AlaGly: 6.078 ± 0.084
0.961AlaHis: 0.961 ± 0.03
4.431AlaIle: 4.431 ± 0.066
5.169AlaLys: 5.169 ± 0.071
6.18AlaLeu: 6.18 ± 0.071
2.122AlaMet: 2.122 ± 0.041
2.528AlaAsn: 2.528 ± 0.042
1.729AlaPro: 1.729 ± 0.044
2.149AlaGln: 2.149 ± 0.044
2.804AlaArg: 2.804 ± 0.052
4.02AlaSer: 4.02 ± 0.057
2.595AlaThr: 2.595 ± 0.058
6.34AlaVal: 6.34 ± 0.085
0.557AlaTrp: 0.557 ± 0.021
2.733AlaTyr: 2.733 ± 0.044
0.0AlaXaa: 0.0 ± 0.0
Cys
0.928CysAla: 0.928 ± 0.027
0.301CysCys: 0.301 ± 0.015
0.802CysAsp: 0.802 ± 0.027
0.862CysGlu: 0.862 ± 0.027
0.765CysPhe: 0.765 ± 0.025
1.384CysGly: 1.384 ± 0.037
0.33CysHis: 0.33 ± 0.018
1.201CysIle: 1.201 ± 0.033
0.851CysLys: 0.851 ± 0.031
1.272CysLeu: 1.272 ± 0.038
0.477CysMet: 0.477 ± 0.021
0.648CysAsn: 0.648 ± 0.023
0.613CysPro: 0.613 ± 0.023
0.453CysGln: 0.453 ± 0.02
0.949CysArg: 0.949 ± 0.024
1.033CysSer: 1.033 ± 0.025
0.752CysThr: 0.752 ± 0.024
0.953CysVal: 0.953 ± 0.028
0.122CysTrp: 0.122 ± 0.012
0.63CysTyr: 0.63 ± 0.023
0.0CysXaa: 0.0 ± 0.0
Asp
4.054AspAla: 4.054 ± 0.059
0.877AspCys: 0.877 ± 0.025
2.971AspAsp: 2.971 ± 0.056
4.378AspGlu: 4.378 ± 0.059
2.85AspPhe: 2.85 ± 0.042
4.599AspGly: 4.599 ± 0.072
0.643AspHis: 0.643 ± 0.023
5.026AspIle: 5.026 ± 0.061
4.079AspLys: 4.079 ± 0.06
4.153AspLeu: 4.153 ± 0.054
1.905AspMet: 1.905 ± 0.034
2.495AspAsn: 2.495 ± 0.047
1.212AspPro: 1.212 ± 0.029
0.951AspGln: 0.951 ± 0.029
2.442AspArg: 2.442 ± 0.043
3.43AspSer: 3.43 ± 0.054
3.057AspThr: 3.057 ± 0.049
3.631AspVal: 3.631 ± 0.052
0.61AspTrp: 0.61 ± 0.024
2.943AspTyr: 2.943 ± 0.057
0.0AspXaa: 0.0 ± 0.0
Glu
4.995GluAla: 4.995 ± 0.068
0.934GluCys: 0.934 ± 0.028
4.27GluAsp: 4.27 ± 0.068
7.359GluGlu: 7.359 ± 0.095
2.71GluPhe: 2.71 ± 0.051
4.51GluGly: 4.51 ± 0.06
1.315GluHis: 1.315 ± 0.027
5.931GluIle: 5.931 ± 0.077
7.07GluLys: 7.07 ± 0.084
6.635GluLeu: 6.635 ± 0.079
2.495GluMet: 2.495 ± 0.043
4.44GluAsn: 4.44 ± 0.059
1.821GluPro: 1.821 ± 0.038
3.21GluGln: 3.21 ± 0.059
3.877GluArg: 3.877 ± 0.06
3.625GluSer: 3.625 ± 0.054
3.435GluThr: 3.435 ± 0.056
4.368GluVal: 4.368 ± 0.065
0.765GluTrp: 0.765 ± 0.024
3.644GluTyr: 3.644 ± 0.06
0.0GluXaa: 0.0 ± 0.0
Phe
3.03PheAla: 3.03 ± 0.055
0.898PheCys: 0.898 ± 0.029
2.623PheAsp: 2.623 ± 0.045
2.725PheGlu: 2.725 ± 0.05
1.953PhePhe: 1.953 ± 0.044
2.884PheGly: 2.884 ± 0.044
0.854PheHis: 0.854 ± 0.027
2.846PheIle: 2.846 ± 0.052
2.056PheLys: 2.056 ± 0.044
4.269PheLeu: 4.269 ± 0.058
1.209PheMet: 1.209 ± 0.03
1.529PheAsn: 1.529 ± 0.036
1.317PhePro: 1.317 ± 0.035
1.453PheGln: 1.453 ± 0.036
1.858PheArg: 1.858 ± 0.038
3.069PheSer: 3.069 ± 0.046
2.224PheThr: 2.224 ± 0.04
2.805PheVal: 2.805 ± 0.055
0.488PheTrp: 0.488 ± 0.021
1.907PheTyr: 1.907 ± 0.042
0.0PheXaa: 0.0 ± 0.0
Gly
4.319GlyAla: 4.319 ± 0.061
1.158GlyCys: 1.158 ± 0.029
3.427GlyAsp: 3.427 ± 0.061
4.767GlyGlu: 4.767 ± 0.064
2.925GlyPhe: 2.925 ± 0.05
4.45GlyGly: 4.45 ± 0.072
1.212GlyHis: 1.212 ± 0.036
6.154GlyIle: 6.154 ± 0.071
5.974GlyLys: 5.974 ± 0.076
5.29GlyLeu: 5.29 ± 0.07
2.496GlyMet: 2.496 ± 0.044
3.416GlyAsn: 3.416 ± 0.061
0.896GlyPro: 0.896 ± 0.029
2.272GlyGln: 2.272 ± 0.047
3.556GlyArg: 3.556 ± 0.055
3.994GlySer: 3.994 ± 0.06
3.873GlyThr: 3.873 ± 0.061
4.383GlyVal: 4.383 ± 0.065
0.703GlyTrp: 0.703 ± 0.025
3.288GlyTyr: 3.288 ± 0.054
0.0GlyXaa: 0.0 ± 0.0
His
1.023HisAla: 1.023 ± 0.025
0.322HisCys: 0.322 ± 0.016
0.858HisAsp: 0.858 ± 0.028
1.046HisGlu: 1.046 ± 0.03
0.882HisPhe: 0.882 ± 0.025
1.264HisGly: 1.264 ± 0.034
0.416HisHis: 0.416 ± 0.031
1.483HisIle: 1.483 ± 0.038
0.989HisLys: 0.989 ± 0.027
1.512HisLeu: 1.512 ± 0.034
0.526HisMet: 0.526 ± 0.021
0.814HisAsn: 0.814 ± 0.026
0.755HisPro: 0.755 ± 0.023
0.519HisGln: 0.519 ± 0.019
0.82HisArg: 0.82 ± 0.024
1.046HisSer: 1.046 ± 0.03
0.864HisThr: 0.864 ± 0.026
0.963HisVal: 0.963 ± 0.025
0.191HisTrp: 0.191 ± 0.013
0.824HisTyr: 0.824 ± 0.028
0.0HisXaa: 0.0 ± 0.0
Ile
5.452IleAla: 5.452 ± 0.071
1.41IleCys: 1.41 ± 0.034
4.179IleAsp: 4.179 ± 0.062
4.926IleGlu: 4.926 ± 0.071
3.005IlePhe: 3.005 ± 0.059
4.733IleGly: 4.733 ± 0.065
1.34IleHis: 1.34 ± 0.035
5.164IleIle: 5.164 ± 0.078
4.62IleLys: 4.62 ± 0.06
7.074IleLeu: 7.074 ± 0.087
2.01IleMet: 2.01 ± 0.042
3.115IleAsn: 3.115 ± 0.051
2.906IlePro: 2.906 ± 0.049
2.436IleGln: 2.436 ± 0.044
3.673IleArg: 3.673 ± 0.059
5.248IleSer: 5.248 ± 0.067
4.176IleThr: 4.176 ± 0.062
4.693IleVal: 4.693 ± 0.065
0.658IleTrp: 0.658 ± 0.022
3.018IleTyr: 3.018 ± 0.054
0.0IleXaa: 0.0 ± 0.0
Lys
5.008LysAla: 5.008 ± 0.065
0.807LysCys: 0.807 ± 0.027
4.082LysAsp: 4.082 ± 0.06
7.062LysGlu: 7.062 ± 0.085
2.054LysPhe: 2.054 ± 0.037
4.423LysGly: 4.423 ± 0.066
1.082LysHis: 1.082 ± 0.031
5.493LysIle: 5.493 ± 0.065
7.184LysLys: 7.184 ± 0.091
5.789LysLeu: 5.789 ± 0.065
2.263LysMet: 2.263 ± 0.045
4.091LysAsn: 4.091 ± 0.065
2.013LysPro: 2.013 ± 0.037
2.753LysGln: 2.753 ± 0.051
3.609LysArg: 3.609 ± 0.051
3.848LysSer: 3.848 ± 0.063
3.717LysThr: 3.717 ± 0.06
4.352LysVal: 4.352 ± 0.068
0.657LysTrp: 0.657 ± 0.026
3.247LysTyr: 3.247 ± 0.058
0.0LysXaa: 0.0 ± 0.0
Leu
6.395LeuAla: 6.395 ± 0.067
1.542LeuCys: 1.542 ± 0.037
4.833LeuAsp: 4.833 ± 0.064
6.557LeuGlu: 6.557 ± 0.087
4.06LeuPhe: 4.06 ± 0.059
5.55LeuGly: 5.55 ± 0.079
1.551LeuHis: 1.551 ± 0.038
5.455LeuIle: 5.455 ± 0.064
6.085LeuLys: 6.085 ± 0.07
8.874LeuLeu: 8.874 ± 0.105
2.382LeuMet: 2.382 ± 0.049
3.781LeuAsn: 3.781 ± 0.065
3.27LeuPro: 3.27 ± 0.052
3.191LeuGln: 3.191 ± 0.05
3.954LeuArg: 3.954 ± 0.06
6.623LeuSer: 6.623 ± 0.085
4.466LeuThr: 4.466 ± 0.057
5.169LeuVal: 5.169 ± 0.061
0.782LeuTrp: 0.782 ± 0.027
3.556LeuTyr: 3.556 ± 0.059
0.0LeuXaa: 0.0 ± 0.0
Met
2.416MetAla: 2.416 ± 0.05
0.372MetCys: 0.372 ± 0.018
1.926MetAsp: 1.926 ± 0.037
2.794MetGlu: 2.794 ± 0.049
1.012MetPhe: 1.012 ± 0.026
2.067MetGly: 2.067 ± 0.043
0.496MetHis: 0.496 ± 0.019
1.956MetIle: 1.956 ± 0.038
2.439MetLys: 2.439 ± 0.042
2.733MetLeu: 2.733 ± 0.045
0.879MetMet: 0.879 ± 0.028
1.424MetAsn: 1.424 ± 0.03
1.183MetPro: 1.183 ± 0.031
1.17MetGln: 1.17 ± 0.034
1.37MetArg: 1.37 ± 0.033
1.628MetSer: 1.628 ± 0.034
1.463MetThr: 1.463 ± 0.034
1.967MetVal: 1.967 ± 0.037
0.207MetTrp: 0.207 ± 0.012
0.97MetTyr: 0.97 ± 0.026
0.0MetXaa: 0.0 ± 0.0
Asn
3.281AsnAla: 3.281 ± 0.057
0.673AsnCys: 0.673 ± 0.025
2.237AsnAsp: 2.237 ± 0.047
2.987AsnGlu: 2.987 ± 0.055
1.707AsnPhe: 1.707 ± 0.033
3.585AsnGly: 3.585 ± 0.055
0.895AsnHis: 0.895 ± 0.023
3.862AsnIle: 3.862 ± 0.062
2.951AsnLys: 2.951 ± 0.052
3.985AsnLeu: 3.985 ± 0.062
1.379AsnMet: 1.379 ± 0.036
2.038AsnAsn: 2.038 ± 0.049
1.946AsnPro: 1.946 ± 0.042
1.553AsnGln: 1.553 ± 0.038
2.229AsnArg: 2.229 ± 0.043
2.579AsnSer: 2.579 ± 0.049
2.46AsnThr: 2.46 ± 0.044
2.836AsnVal: 2.836 ± 0.045
0.4AsnTrp: 0.4 ± 0.017
2.006AsnTyr: 2.006 ± 0.044
0.0AsnXaa: 0.0 ± 0.0
Pro
2.24ProAla: 2.24 ± 0.049
0.436ProCys: 0.436 ± 0.014
2.24ProAsp: 2.24 ± 0.043
3.106ProGlu: 3.106 ± 0.05
1.482ProPhe: 1.482 ± 0.038
1.672ProGly: 1.672 ± 0.043
0.514ProHis: 0.514 ± 0.02
1.844ProIle: 1.844 ± 0.04
1.978ProLys: 1.978 ± 0.039
2.486ProLeu: 2.486 ± 0.047
0.783ProMet: 0.783 ± 0.022
1.153ProAsn: 1.153 ± 0.03
0.712ProPro: 0.712 ± 0.028
1.017ProGln: 1.017 ± 0.029
0.885ProArg: 0.885 ± 0.027
1.795ProSer: 1.795 ± 0.042
1.39ProThr: 1.39 ± 0.05
2.556ProVal: 2.556 ± 0.04
0.275ProTrp: 0.275 ± 0.014
1.381ProTyr: 1.381 ± 0.037
0.0ProXaa: 0.0 ± 0.0
Gln
2.515GlnAla: 2.515 ± 0.044
0.419GlnCys: 0.419 ± 0.018
1.651GlnAsp: 1.651 ± 0.036
2.953GlnGlu: 2.953 ± 0.061
1.283GlnPhe: 1.283 ± 0.032
2.106GlnGly: 2.106 ± 0.043
0.496GlnHis: 0.496 ± 0.018
2.722GlnIle: 2.722 ± 0.044
3.156GlnLys: 3.156 ± 0.056
2.67GlnLeu: 2.67 ± 0.046
1.265GlnMet: 1.265 ± 0.031
1.777GlnAsn: 1.777 ± 0.039
0.901GlnPro: 0.901 ± 0.027
1.276GlnGln: 1.276 ± 0.037
1.61GlnArg: 1.61 ± 0.039
1.907GlnSer: 1.907 ± 0.04
1.622GlnThr: 1.622 ± 0.035
1.934GlnVal: 1.934 ± 0.041
0.305GlnTrp: 0.305 ± 0.016
1.577GlnTyr: 1.577 ± 0.034
0.0GlnXaa: 0.0 ± 0.0
Arg
2.745ArgAla: 2.745 ± 0.05
0.603ArgCys: 0.603 ± 0.022
2.362ArgAsp: 2.362 ± 0.044
4.294ArgGlu: 4.294 ± 0.06
1.944ArgPhe: 1.944 ± 0.038
2.56ArgGly: 2.56 ± 0.048
0.869ArgHis: 0.869 ± 0.031
3.712ArgIle: 3.712 ± 0.055
3.978ArgLys: 3.978 ± 0.057
4.135ArgLeu: 4.135 ± 0.063
1.675ArgMet: 1.675 ± 0.034
2.38ArgAsn: 2.38 ± 0.044
1.215ArgPro: 1.215 ± 0.029
2.059ArgGln: 2.059 ± 0.049
2.6ArgArg: 2.6 ± 0.055
2.141ArgSer: 2.141 ± 0.041
2.146ArgThr: 2.146 ± 0.043
2.619ArgVal: 2.619 ± 0.045
0.423ArgTrp: 0.423 ± 0.019
2.137ArgTyr: 2.137 ± 0.043
0.0ArgXaa: 0.0 ± 0.0
Ser
4.307SerAla: 4.307 ± 0.063
0.853SerCys: 0.853 ± 0.029
3.653SerAsp: 3.653 ± 0.061
4.182SerGlu: 4.182 ± 0.059
2.899SerPhe: 2.899 ± 0.045
5.202SerGly: 5.202 ± 0.067
1.095SerHis: 1.095 ± 0.029
4.429SerIle: 4.429 ± 0.067
3.886SerLys: 3.886 ± 0.062
5.413SerLeu: 5.413 ± 0.064
1.787SerMet: 1.787 ± 0.038
2.532SerAsn: 2.532 ± 0.048
1.669SerPro: 1.669 ± 0.037
1.859SerGln: 1.859 ± 0.038
2.778SerArg: 2.778 ± 0.051
3.923SerSer: 3.923 ± 0.076
2.675SerThr: 2.675 ± 0.049
4.593SerVal: 4.593 ± 0.064
0.537SerTrp: 0.537 ± 0.023
2.7SerTyr: 2.7 ± 0.047
0.0SerXaa: 0.0 ± 0.0
Thr
4.237ThrAla: 4.237 ± 0.059
0.587ThrCys: 0.587 ± 0.023
2.98ThrAsp: 2.98 ± 0.05
3.72ThrGlu: 3.72 ± 0.063
1.999ThrPhe: 1.999 ± 0.044
4.07ThrGly: 4.07 ± 0.068
0.769ThrHis: 0.769 ± 0.025
3.508ThrIle: 3.508 ± 0.059
3.196ThrLys: 3.196 ± 0.053
4.324ThrLeu: 4.324 ± 0.058
1.342ThrMet: 1.342 ± 0.034
2.014ThrAsn: 2.014 ± 0.037
1.898ThrPro: 1.898 ± 0.044
1.405ThrGln: 1.405 ± 0.032
1.753ThrArg: 1.753 ± 0.036
2.852ThrSer: 2.852 ± 0.056
2.308ThrThr: 2.308 ± 0.055
4.343ThrVal: 4.343 ± 0.067
0.44ThrTrp: 0.44 ± 0.021
1.973ThrTyr: 1.973 ± 0.041
0.0ThrXaa: 0.0 ± 0.0
Val
4.208ValAla: 4.208 ± 0.069
1.163ValCys: 1.163 ± 0.028
3.579ValAsp: 3.579 ± 0.058
4.325ValGlu: 4.325 ± 0.064
3.052ValPhe: 3.052 ± 0.052
3.709ValGly: 3.709 ± 0.067
1.038ValHis: 1.038 ± 0.032
4.865ValIle: 4.865 ± 0.062
4.551ValLys: 4.551 ± 0.057
6.377ValLeu: 6.377 ± 0.079
1.997ValMet: 1.997 ± 0.041
2.844ValAsn: 2.844 ± 0.048
2.365ValPro: 2.365 ± 0.041
2.12ValGln: 2.12 ± 0.047
3.083ValArg: 3.083 ± 0.05
5.007ValSer: 5.007 ± 0.057
3.849ValThr: 3.849 ± 0.069
4.369ValVal: 4.369 ± 0.071
0.661ValTrp: 0.661 ± 0.024
2.735ValTyr: 2.735 ± 0.047
0.0ValXaa: 0.0 ± 0.0
Trp
0.521TrpAla: 0.521 ± 0.024
0.154TrpCys: 0.154 ± 0.011
0.582TrpAsp: 0.582 ± 0.023
0.761TrpGlu: 0.761 ± 0.025
0.4TrpPhe: 0.4 ± 0.018
0.665TrpGly: 0.665 ± 0.024
0.187TrpHis: 0.187 ± 0.011
0.639TrpIle: 0.639 ± 0.023
0.817TrpLys: 0.817 ± 0.028
0.86TrpLeu: 0.86 ± 0.029
0.285TrpMet: 0.285 ± 0.015
0.574TrpAsn: 0.574 ± 0.022
0.15TrpPro: 0.15 ± 0.011
0.394TrpGln: 0.394 ± 0.016
0.419TrpArg: 0.419 ± 0.018
0.502TrpSer: 0.502 ± 0.023
0.409TrpThr: 0.409 ± 0.018
0.495TrpVal: 0.495 ± 0.021
0.118TrpTrp: 0.118 ± 0.011
0.409TrpTyr: 0.409 ± 0.015
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.757TyrAla: 2.757 ± 0.052
0.794TyrCys: 0.794 ± 0.029
2.603TyrAsp: 2.603 ± 0.049
2.996TyrGlu: 2.996 ± 0.043
2.058TyrPhe: 2.058 ± 0.043
3.045TyrGly: 3.045 ± 0.049
1.054TyrHis: 1.054 ± 0.031
3.116TyrIle: 3.116 ± 0.05
2.507TyrLys: 2.507 ± 0.049
4.044TyrLeu: 4.044 ± 0.059
1.195TyrMet: 1.195 ± 0.035
1.995TyrAsn: 1.995 ± 0.04
1.371TyrPro: 1.371 ± 0.034
1.907TyrGln: 1.907 ± 0.043
2.328TyrArg: 2.328 ± 0.042
2.702TyrSer: 2.702 ± 0.045
2.236TyrThr: 2.236 ± 0.05
2.53TyrVal: 2.53 ± 0.047
0.439TyrTrp: 0.439 ± 0.019
2.187TyrTyr: 2.187 ± 0.05
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 4329 proteins (1321254 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