Amino acid dipepetide frequency for Bacillus cohnii

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
4.704AlaAla: 4.704 ± 0.081
0.519AlaCys: 0.519 ± 0.022
2.767AlaAsp: 2.767 ± 0.05
4.108AlaGlu: 4.108 ± 0.059
3.108AlaPhe: 3.108 ± 0.054
4.511AlaGly: 4.511 ± 0.068
1.221AlaHis: 1.221 ± 0.033
5.862AlaIle: 5.862 ± 0.094
4.307AlaLys: 4.307 ± 0.068
6.637AlaLeu: 6.637 ± 0.086
1.768AlaMet: 1.768 ± 0.04
2.918AlaAsn: 2.918 ± 0.048
1.98AlaPro: 1.98 ± 0.049
1.979AlaGln: 1.979 ± 0.046
2.308AlaArg: 2.308 ± 0.049
3.876AlaSer: 3.876 ± 0.059
3.598AlaThr: 3.598 ± 0.058
4.804AlaVal: 4.804 ± 0.07
0.603AlaTrp: 0.603 ± 0.023
2.267AlaTyr: 2.267 ± 0.05
0.0AlaXaa: 0.0 ± 0.0
Cys
0.379CysAla: 0.379 ± 0.016
0.091CysCys: 0.091 ± 0.008
0.353CysAsp: 0.353 ± 0.016
0.425CysGlu: 0.425 ± 0.02
0.326CysPhe: 0.326 ± 0.017
0.61CysGly: 0.61 ± 0.025
0.183CysHis: 0.183 ± 0.012
0.562CysIle: 0.562 ± 0.02
0.411CysLys: 0.411 ± 0.017
0.64CysLeu: 0.64 ± 0.02
0.17CysMet: 0.17 ± 0.01
0.308CysAsn: 0.308 ± 0.017
0.349CysPro: 0.349 ± 0.018
0.208CysGln: 0.208 ± 0.013
0.276CysArg: 0.276 ± 0.015
0.503CysSer: 0.503 ± 0.022
0.384CysThr: 0.384 ± 0.016
0.395CysVal: 0.395 ± 0.017
0.067CysTrp: 0.067 ± 0.007
0.27CysTyr: 0.27 ± 0.016
0.0CysXaa: 0.0 ± 0.0
Asp
2.96AspAla: 2.96 ± 0.053
0.373AspCys: 0.373 ± 0.016
2.286AspAsp: 2.286 ± 0.049
4.334AspGlu: 4.334 ± 0.065
2.264AspPhe: 2.264 ± 0.043
3.308AspGly: 3.308 ± 0.053
1.035AspHis: 1.035 ± 0.04
4.056AspIle: 4.056 ± 0.057
2.883AspLys: 2.883 ± 0.049
4.438AspLeu: 4.438 ± 0.06
1.218AspMet: 1.218 ± 0.033
1.902AspAsn: 1.902 ± 0.041
1.806AspPro: 1.806 ± 0.041
1.64AspGln: 1.64 ± 0.04
2.064AspArg: 2.064 ± 0.043
2.612AspSer: 2.612 ± 0.051
2.392AspThr: 2.392 ± 0.037
3.848AspVal: 3.848 ± 0.066
0.671AspTrp: 0.671 ± 0.023
2.136AspTyr: 2.136 ± 0.042
0.0AspXaa: 0.0 ± 0.0
Glu
4.923GluAla: 4.923 ± 0.064
0.387GluCys: 0.387 ± 0.019
3.8GluAsp: 3.8 ± 0.062
8.011GluGlu: 8.011 ± 0.111
2.568GluPhe: 2.568 ± 0.045
4.357GluGly: 4.357 ± 0.057
1.554GluHis: 1.554 ± 0.035
5.725GluIle: 5.725 ± 0.081
7.011GluLys: 7.011 ± 0.094
7.381GluLeu: 7.381 ± 0.095
2.208GluMet: 2.208 ± 0.039
4.09GluAsn: 4.09 ± 0.056
1.912GluPro: 1.912 ± 0.044
3.553GluGln: 3.553 ± 0.07
3.501GluArg: 3.501 ± 0.058
3.453GluSer: 3.453 ± 0.06
4.012GluThr: 4.012 ± 0.061
5.635GluVal: 5.635 ± 0.078
0.907GluTrp: 0.907 ± 0.033
2.452GluTyr: 2.452 ± 0.045
0.0GluXaa: 0.0 ± 0.0
Phe
2.912PheAla: 2.912 ± 0.049
0.362PheCys: 0.362 ± 0.018
2.252PheAsp: 2.252 ± 0.035
2.883PheGlu: 2.883 ± 0.047
2.62PhePhe: 2.62 ± 0.064
3.323PheGly: 3.323 ± 0.062
1.158PheHis: 1.158 ± 0.033
4.295PheIle: 4.295 ± 0.067
2.288PheLys: 2.288 ± 0.047
4.898PheLeu: 4.898 ± 0.078
1.148PheMet: 1.148 ± 0.028
1.988PheAsn: 1.988 ± 0.039
1.729PhePro: 1.729 ± 0.037
1.789PheGln: 1.789 ± 0.04
1.561PheArg: 1.561 ± 0.039
3.403PheSer: 3.403 ± 0.052
2.789PheThr: 2.789 ± 0.049
3.378PheVal: 3.378 ± 0.054
0.5PheTrp: 0.5 ± 0.022
1.944PheTyr: 1.944 ± 0.042
0.0PheXaa: 0.0 ± 0.0
Gly
4.422GlyAla: 4.422 ± 0.066
0.569GlyCys: 0.569 ± 0.022
3.023GlyAsp: 3.023 ± 0.05
4.545GlyGlu: 4.545 ± 0.065
3.314GlyPhe: 3.314 ± 0.06
4.527GlyGly: 4.527 ± 0.082
1.291GlyHis: 1.291 ± 0.036
5.661GlyIle: 5.661 ± 0.079
4.831GlyLys: 4.831 ± 0.066
6.248GlyLeu: 6.248 ± 0.081
1.964GlyMet: 1.964 ± 0.039
2.92GlyAsn: 2.92 ± 0.055
1.675GlyPro: 1.675 ± 0.037
2.049GlyGln: 2.049 ± 0.043
2.469GlyArg: 2.469 ± 0.049
3.795GlySer: 3.795 ± 0.056
4.054GlyThr: 4.054 ± 0.069
5.094GlyVal: 5.094 ± 0.071
0.78GlyTrp: 0.78 ± 0.029
2.728GlyTyr: 2.728 ± 0.049
0.0GlyXaa: 0.0 ± 0.0
His
1.175HisAla: 1.175 ± 0.032
0.195HisCys: 0.195 ± 0.012
1.003HisAsp: 1.003 ± 0.036
1.39HisGlu: 1.39 ± 0.029
1.126HisPhe: 1.126 ± 0.028
1.351HisGly: 1.351 ± 0.033
0.622HisHis: 0.622 ± 0.026
1.685HisIle: 1.685 ± 0.039
1.007HisLys: 1.007 ± 0.027
2.118HisLeu: 2.118 ± 0.046
0.484HisMet: 0.484 ± 0.019
0.874HisAsn: 0.874 ± 0.026
1.046HisPro: 1.046 ± 0.027
0.727HisGln: 0.727 ± 0.027
0.849HisArg: 0.849 ± 0.028
1.337HisSer: 1.337 ± 0.038
1.063HisThr: 1.063 ± 0.028
1.414HisVal: 1.414 ± 0.03
0.214HisTrp: 0.214 ± 0.012
0.941HisTyr: 0.941 ± 0.028
0.0HisXaa: 0.0 ± 0.0
Ile
5.748IleAla: 5.748 ± 0.077
0.624IleCys: 0.624 ± 0.021
4.271IleAsp: 4.271 ± 0.056
5.936IleGlu: 5.936 ± 0.065
3.673IlePhe: 3.673 ± 0.058
6.099IleGly: 6.099 ± 0.082
1.729IleHis: 1.729 ± 0.038
6.719IleIle: 6.719 ± 0.082
4.794IleLys: 4.794 ± 0.073
7.249IleLeu: 7.249 ± 0.079
1.836IleMet: 1.836 ± 0.037
3.772IleAsn: 3.772 ± 0.065
3.519IlePro: 3.519 ± 0.059
2.972IleGln: 2.972 ± 0.051
2.948IleArg: 2.948 ± 0.049
5.22IleSer: 5.22 ± 0.061
4.716IleThr: 4.716 ± 0.056
6.252IleVal: 6.252 ± 0.081
0.666IleTrp: 0.666 ± 0.024
2.664IleTyr: 2.664 ± 0.045
0.0IleXaa: 0.0 ± 0.0
Lys
4.178LysAla: 4.178 ± 0.07
0.357LysCys: 0.357 ± 0.018
3.71LysAsp: 3.71 ± 0.059
7.325LysGlu: 7.325 ± 0.09
2.017LysPhe: 2.017 ± 0.038
4.298LysGly: 4.298 ± 0.064
1.388LysHis: 1.388 ± 0.033
4.793LysIle: 4.793 ± 0.058
5.857LysLys: 5.857 ± 0.076
6.127LysLeu: 6.127 ± 0.068
2.183LysMet: 2.183 ± 0.037
3.453LysAsn: 3.453 ± 0.05
1.994LysPro: 1.994 ± 0.039
3.104LysGln: 3.104 ± 0.052
3.228LysArg: 3.228 ± 0.05
3.565LysSer: 3.565 ± 0.061
3.39LysThr: 3.39 ± 0.05
5.16LysVal: 5.16 ± 0.069
0.827LysTrp: 0.827 ± 0.024
2.348LysTyr: 2.348 ± 0.04
0.0LysXaa: 0.0 ± 0.0
Leu
6.778LeuAla: 6.778 ± 0.088
0.65LeuCys: 0.65 ± 0.025
4.491LeuAsp: 4.491 ± 0.061
6.844LeuGlu: 6.844 ± 0.087
5.213LeuPhe: 5.213 ± 0.073
6.052LeuGly: 6.052 ± 0.082
2.057LeuHis: 2.057 ± 0.041
7.238LeuIle: 7.238 ± 0.087
6.596LeuLys: 6.596 ± 0.073
10.773LeuLeu: 10.773 ± 0.127
2.351LeuMet: 2.351 ± 0.045
4.389LeuAsn: 4.389 ± 0.053
3.85LeuPro: 3.85 ± 0.059
4.227LeuGln: 4.227 ± 0.063
3.468LeuArg: 3.468 ± 0.057
6.65LeuSer: 6.65 ± 0.077
5.742LeuThr: 5.742 ± 0.065
6.455LeuVal: 6.455 ± 0.07
0.854LeuTrp: 0.854 ± 0.028
3.358LeuTyr: 3.358 ± 0.049
0.0LeuXaa: 0.0 ± 0.0
Met
1.75MetAla: 1.75 ± 0.043
0.131MetCys: 0.131 ± 0.01
1.389MetAsp: 1.389 ± 0.037
2.224MetGlu: 2.224 ± 0.048
1.137MetPhe: 1.137 ± 0.029
1.535MetGly: 1.535 ± 0.038
0.416MetHis: 0.416 ± 0.015
1.991MetIle: 1.991 ± 0.038
2.414MetLys: 2.414 ± 0.043
2.502MetLeu: 2.502 ± 0.045
0.846MetMet: 0.846 ± 0.028
1.64MetAsn: 1.64 ± 0.035
0.911MetPro: 0.911 ± 0.028
0.793MetGln: 0.793 ± 0.022
0.978MetArg: 0.978 ± 0.029
1.559MetSer: 1.559 ± 0.031
1.477MetThr: 1.477 ± 0.036
1.664MetVal: 1.664 ± 0.035
0.186MetTrp: 0.186 ± 0.011
0.817MetTyr: 0.817 ± 0.026
0.0MetXaa: 0.0 ± 0.0
Asn
2.71AsnAla: 2.71 ± 0.043
0.326AsnCys: 0.326 ± 0.019
2.401AsnAsp: 2.401 ± 0.05
4.13AsnGlu: 4.13 ± 0.057
1.855AsnPhe: 1.855 ± 0.039
3.509AsnGly: 3.509 ± 0.065
0.941AsnHis: 0.941 ± 0.032
4.13AsnIle: 4.13 ± 0.057
3.347AsnLys: 3.347 ± 0.054
3.92AsnLeu: 3.92 ± 0.053
1.295AsnMet: 1.295 ± 0.028
2.666AsnAsn: 2.666 ± 0.061
2.01AsnPro: 2.01 ± 0.037
1.67AsnGln: 1.67 ± 0.034
2.197AsnArg: 2.197 ± 0.037
2.733AsnSer: 2.733 ± 0.051
2.32AsnThr: 2.32 ± 0.043
3.566AsnVal: 3.566 ± 0.053
0.603AsnTrp: 0.603 ± 0.021
1.75AsnTyr: 1.75 ± 0.039
0.0AsnXaa: 0.0 ± 0.0
Pro
1.986ProAla: 1.986 ± 0.046
0.199ProCys: 0.199 ± 0.014
1.652ProAsp: 1.652 ± 0.038
2.604ProGlu: 2.604 ± 0.049
2.046ProPhe: 2.046 ± 0.042
2.13ProGly: 2.13 ± 0.046
0.807ProHis: 0.807 ± 0.028
3.041ProIle: 3.041 ± 0.046
2.144ProLys: 2.144 ± 0.036
3.474ProLeu: 3.474 ± 0.049
0.776ProMet: 0.776 ± 0.025
1.912ProAsn: 1.912 ± 0.045
1.094ProPro: 1.094 ± 0.032
1.072ProGln: 1.072 ± 0.03
0.997ProArg: 0.997 ± 0.026
2.389ProSer: 2.389 ± 0.043
2.255ProThr: 2.255 ± 0.039
2.655ProVal: 2.655 ± 0.039
0.338ProTrp: 0.338 ± 0.016
1.408ProTyr: 1.408 ± 0.032
0.0ProXaa: 0.0 ± 0.0
Gln
2.319GlnAla: 2.319 ± 0.048
0.184GlnCys: 0.184 ± 0.012
1.478GlnAsp: 1.478 ± 0.036
2.643GlnGlu: 2.643 ± 0.051
1.858GlnPhe: 1.858 ± 0.041
1.962GlnGly: 1.962 ± 0.042
0.864GlnHis: 0.864 ± 0.026
2.532GlnIle: 2.532 ± 0.043
2.708GlnLys: 2.708 ± 0.053
4.4GlnLeu: 4.4 ± 0.073
1.01GlnMet: 1.01 ± 0.028
1.678GlnAsn: 1.678 ± 0.04
1.213GlnPro: 1.213 ± 0.038
1.947GlnGln: 1.947 ± 0.053
1.399GlnArg: 1.399 ± 0.034
2.166GlnSer: 2.166 ± 0.043
2.003GlnThr: 2.003 ± 0.038
2.256GlnVal: 2.256 ± 0.044
0.469GlnTrp: 0.469 ± 0.016
1.521GlnTyr: 1.521 ± 0.035
0.0GlnXaa: 0.0 ± 0.0
Arg
2.365ArgAla: 2.365 ± 0.044
0.23ArgCys: 0.23 ± 0.013
1.953ArgAsp: 1.953 ± 0.038
3.196ArgGlu: 3.196 ± 0.054
1.714ArgPhe: 1.714 ± 0.04
2.255ArgGly: 2.255 ± 0.045
0.69ArgHis: 0.69 ± 0.023
2.942ArgIle: 2.942 ± 0.055
3.224ArgLys: 3.224 ± 0.048
3.74ArgLeu: 3.74 ± 0.057
1.147ArgMet: 1.147 ± 0.031
2.066ArgAsn: 2.066 ± 0.035
1.244ArgPro: 1.244 ± 0.033
1.39ArgGln: 1.39 ± 0.032
1.652ArgArg: 1.652 ± 0.038
2.115ArgSer: 2.115 ± 0.042
2.063ArgThr: 2.063 ± 0.039
2.549ArgVal: 2.549 ± 0.047
0.428ArgTrp: 0.428 ± 0.017
1.494ArgTyr: 1.494 ± 0.039
0.0ArgXaa: 0.0 ± 0.0
Ser
3.385SerAla: 3.385 ± 0.066
0.402SerCys: 0.402 ± 0.017
2.582SerAsp: 2.582 ± 0.045
3.92SerGlu: 3.92 ± 0.06
3.651SerPhe: 3.651 ± 0.064
4.052SerGly: 4.052 ± 0.058
1.17SerHis: 1.17 ± 0.031
5.658SerIle: 5.658 ± 0.062
3.932SerLys: 3.932 ± 0.056
6.37SerLeu: 6.37 ± 0.07
1.634SerMet: 1.634 ± 0.035
2.995SerAsn: 2.995 ± 0.051
2.118SerPro: 2.118 ± 0.039
1.792SerGln: 1.792 ± 0.035
2.146SerArg: 2.146 ± 0.047
4.102SerSer: 4.102 ± 0.069
3.443SerThr: 3.443 ± 0.057
4.274SerVal: 4.274 ± 0.06
0.65SerTrp: 0.65 ± 0.025
2.41SerTyr: 2.41 ± 0.046
0.0SerXaa: 0.0 ± 0.0
Thr
3.571ThrAla: 3.571 ± 0.068
0.334ThrCys: 0.334 ± 0.016
2.607ThrAsp: 2.607 ± 0.052
3.766ThrGlu: 3.766 ± 0.049
2.968ThrPhe: 2.968 ± 0.049
3.935ThrGly: 3.935 ± 0.055
1.051ThrHis: 1.051 ± 0.027
5.071ThrIle: 5.071 ± 0.072
3.489ThrLys: 3.489 ± 0.045
5.509ThrLeu: 5.509 ± 0.067
1.28ThrMet: 1.28 ± 0.033
2.826ThrAsn: 2.826 ± 0.049
2.232ThrPro: 2.232 ± 0.038
1.372ThrGln: 1.372 ± 0.035
1.753ThrArg: 1.753 ± 0.034
3.446ThrSer: 3.446 ± 0.055
3.198ThrThr: 3.198 ± 0.056
4.613ThrVal: 4.613 ± 0.061
0.557ThrTrp: 0.557 ± 0.021
2.132ThrTyr: 2.132 ± 0.044
0.0ThrXaa: 0.0 ± 0.0
Val
4.998ValAla: 4.998 ± 0.065
0.564ValCys: 0.564 ± 0.023
3.726ValAsp: 3.726 ± 0.057
5.455ValGlu: 5.455 ± 0.085
3.18ValPhe: 3.18 ± 0.049
4.981ValGly: 4.981 ± 0.081
1.417ValHis: 1.417 ± 0.033
5.755ValIle: 5.755 ± 0.075
4.921ValLys: 4.921 ± 0.07
6.978ValLeu: 6.978 ± 0.081
1.878ValMet: 1.878 ± 0.035
3.334ValAsn: 3.334 ± 0.053
2.661ValPro: 2.661 ± 0.047
2.609ValGln: 2.609 ± 0.047
2.628ValArg: 2.628 ± 0.047
4.794ValSer: 4.794 ± 0.06
4.347ValThr: 4.347 ± 0.069
5.493ValVal: 5.493 ± 0.077
0.656ValTrp: 0.656 ± 0.022
2.288ValTyr: 2.288 ± 0.039
0.0ValXaa: 0.0 ± 0.0
Trp
0.58TrpAla: 0.58 ± 0.024
0.086TrpCys: 0.086 ± 0.008
0.573TrpAsp: 0.573 ± 0.022
0.754TrpGlu: 0.754 ± 0.027
0.478TrpPhe: 0.478 ± 0.018
0.699TrpGly: 0.699 ± 0.026
0.201TrpHis: 0.201 ± 0.013
0.84TrpIle: 0.84 ± 0.027
0.868TrpLys: 0.868 ± 0.024
1.091TrpLeu: 1.091 ± 0.036
0.321TrpMet: 0.321 ± 0.014
0.62TrpAsn: 0.62 ± 0.024
0.256TrpPro: 0.256 ± 0.015
0.349TrpGln: 0.349 ± 0.019
0.424TrpArg: 0.424 ± 0.022
0.65TrpSer: 0.65 ± 0.021
0.546TrpThr: 0.546 ± 0.02
0.667TrpVal: 0.667 ± 0.025
0.153TrpTrp: 0.153 ± 0.011
0.361TrpTyr: 0.361 ± 0.017
0.0TrpXaa: 0.0 ± 0.0
Tyr
1.999TyrAla: 1.999 ± 0.038
0.327TyrCys: 0.327 ± 0.017
1.907TyrAsp: 1.907 ± 0.039
2.948TyrGlu: 2.948 ± 0.05
2.104TyrPhe: 2.104 ± 0.043
2.466TyrGly: 2.466 ± 0.049
0.831TyrHis: 0.831 ± 0.025
2.851TyrIle: 2.851 ± 0.049
2.268TyrLys: 2.268 ± 0.043
3.543TyrLeu: 3.543 ± 0.058
0.843TyrMet: 0.843 ± 0.026
1.728TyrAsn: 1.728 ± 0.037
1.379TyrPro: 1.379 ± 0.034
1.367TyrGln: 1.367 ± 0.034
1.613TyrArg: 1.613 ± 0.035
2.319TyrSer: 2.319 ± 0.041
1.919TyrThr: 1.919 ± 0.043
2.491TyrVal: 2.491 ± 0.044
0.388TyrTrp: 0.388 ± 0.017
1.681TyrTyr: 1.681 ± 0.04
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 4687 proteins (1336336 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