Amino acid dipepetide frequency for Streptomyces sp. AcH 505

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
20.874AlaAla: 20.874 ± 0.142
0.928AlaCys: 0.928 ± 0.024
8.47AlaAsp: 8.47 ± 0.077
8.419AlaGlu: 8.419 ± 0.078
3.589AlaPhe: 3.589 ± 0.042
13.125AlaGly: 13.125 ± 0.081
2.752AlaHis: 2.752 ± 0.039
3.607AlaIle: 3.607 ± 0.052
3.261AlaLys: 3.261 ± 0.053
13.842AlaLeu: 13.842 ± 0.12
2.633AlaMet: 2.633 ± 0.037
2.128AlaAsn: 2.128 ± 0.034
6.622AlaPro: 6.622 ± 0.069
3.887AlaGln: 3.887 ± 0.04
9.432AlaArg: 9.432 ± 0.078
6.019AlaSer: 6.019 ± 0.057
7.114AlaThr: 7.114 ± 0.061
12.179AlaVal: 12.179 ± 0.087
1.776AlaTrp: 1.776 ± 0.029
2.701AlaTyr: 2.701 ± 0.039
0.002AlaXaa: 0.002 ± 0.001
Cys
0.975CysAla: 0.975 ± 0.024
0.086CysCys: 0.086 ± 0.007
0.45CysAsp: 0.45 ± 0.014
0.366CysGlu: 0.366 ± 0.013
0.217CysPhe: 0.217 ± 0.011
0.908CysGly: 0.908 ± 0.021
0.17CysHis: 0.17 ± 0.01
0.163CysIle: 0.163 ± 0.009
0.104CysLys: 0.104 ± 0.008
0.673CysLeu: 0.673 ± 0.019
0.108CysMet: 0.108 ± 0.007
0.146CysAsn: 0.146 ± 0.009
0.439CysPro: 0.439 ± 0.016
0.175CysGln: 0.175 ± 0.009
0.504CysArg: 0.504 ± 0.016
0.408CysSer: 0.408 ± 0.018
0.458CysThr: 0.458 ± 0.016
0.643CysVal: 0.643 ± 0.018
0.111CysTrp: 0.111 ± 0.007
0.147CysTyr: 0.147 ± 0.009
0.0CysXaa: 0.0 ± 0.0
Asp
7.67AspAla: 7.67 ± 0.067
0.409AspCys: 0.409 ± 0.013
3.835AspAsp: 3.835 ± 0.044
3.995AspGlu: 3.995 ± 0.051
1.766AspPhe: 1.766 ± 0.027
6.336AspGly: 6.336 ± 0.058
1.451AspHis: 1.451 ± 0.025
2.202AspIle: 2.202 ± 0.035
1.361AspLys: 1.361 ± 0.031
6.158AspLeu: 6.158 ± 0.055
0.896AspMet: 0.896 ± 0.019
1.142AspAsn: 1.142 ± 0.025
4.526AspPro: 4.526 ± 0.05
1.703AspGln: 1.703 ± 0.029
4.573AspArg: 4.573 ± 0.051
2.85AspSer: 2.85 ± 0.038
3.401AspThr: 3.401 ± 0.044
4.91AspVal: 4.91 ± 0.056
1.042AspTrp: 1.042 ± 0.021
1.159AspTyr: 1.159 ± 0.024
0.0AspXaa: 0.0 ± 0.0
Glu
7.032GluAla: 7.032 ± 0.075
0.341GluCys: 0.341 ± 0.014
2.656GluAsp: 2.656 ± 0.041
3.068GluGlu: 3.068 ± 0.048
1.54GluPhe: 1.54 ± 0.024
4.12GluGly: 4.12 ± 0.051
1.412GluHis: 1.412 ± 0.027
2.388GluIle: 2.388 ± 0.036
1.433GluLys: 1.433 ± 0.035
6.857GluLeu: 6.857 ± 0.068
0.934GluMet: 0.934 ± 0.019
1.069GluAsn: 1.069 ± 0.023
3.117GluPro: 3.117 ± 0.034
2.296GluGln: 2.296 ± 0.039
5.109GluArg: 5.109 ± 0.058
2.662GluSer: 2.662 ± 0.035
2.979GluThr: 2.979 ± 0.041
4.095GluVal: 4.095 ± 0.044
0.719GluTrp: 0.719 ± 0.017
1.105GluTyr: 1.105 ± 0.021
0.0GluXaa: 0.0 ± 0.0
Phe
3.79PheAla: 3.79 ± 0.044
0.27PheCys: 0.27 ± 0.012
2.169PheAsp: 2.169 ± 0.037
1.402PheGlu: 1.402 ± 0.027
0.915PhePhe: 0.915 ± 0.026
3.134PheGly: 3.134 ± 0.039
0.623PheHis: 0.623 ± 0.017
0.831PheIle: 0.831 ± 0.023
0.605PheLys: 0.605 ± 0.017
2.615PheLeu: 2.615 ± 0.039
0.443PheMet: 0.443 ± 0.015
0.673PheAsn: 0.673 ± 0.017
1.409PhePro: 1.409 ± 0.024
0.786PheGln: 0.786 ± 0.016
1.846PheArg: 1.846 ± 0.029
1.558PheSer: 1.558 ± 0.028
2.097PheThr: 2.097 ± 0.032
2.409PheVal: 2.409 ± 0.034
0.43PheTrp: 0.43 ± 0.013
0.623PheTyr: 0.623 ± 0.019
0.0PheXaa: 0.0 ± 0.0
Gly
11.136GlyAla: 11.136 ± 0.081
0.795GlyCys: 0.795 ± 0.021
5.199GlyAsp: 5.199 ± 0.059
4.803GlyGlu: 4.803 ± 0.052
2.956GlyPhe: 2.956 ± 0.039
8.806GlyGly: 8.806 ± 0.097
2.274GlyHis: 2.274 ± 0.038
3.682GlyIle: 3.682 ± 0.041
2.685GlyLys: 2.685 ± 0.041
9.348GlyLeu: 9.348 ± 0.075
2.019GlyMet: 2.019 ± 0.032
1.879GlyAsn: 1.879 ± 0.032
4.904GlyPro: 4.904 ± 0.052
2.873GlyGln: 2.873 ± 0.048
7.241GlyArg: 7.241 ± 0.061
5.623GlySer: 5.623 ± 0.067
6.227GlyThr: 6.227 ± 0.064
7.477GlyVal: 7.477 ± 0.075
1.731GlyTrp: 1.731 ± 0.03
2.386GlyTyr: 2.386 ± 0.034
0.0GlyXaa: 0.0 ± 0.0
His
2.539HisAla: 2.539 ± 0.041
0.192HisCys: 0.192 ± 0.009
1.373HisAsp: 1.373 ± 0.023
1.167HisGlu: 1.167 ± 0.022
0.688HisPhe: 0.688 ± 0.019
2.351HisGly: 2.351 ± 0.036
0.676HisHis: 0.676 ± 0.02
0.742HisIle: 0.742 ± 0.019
0.387HisLys: 0.387 ± 0.013
2.279HisLeu: 2.279 ± 0.034
0.35HisMet: 0.35 ± 0.012
0.406HisAsn: 0.406 ± 0.014
1.681HisPro: 1.681 ± 0.029
0.665HisGln: 0.665 ± 0.017
1.872HisArg: 1.872 ± 0.033
1.085HisSer: 1.085 ± 0.024
1.347HisThr: 1.347 ± 0.026
1.64HisVal: 1.64 ± 0.032
0.378HisTrp: 0.378 ± 0.014
0.469HisTyr: 0.469 ± 0.013
0.0HisXaa: 0.0 ± 0.0
Ile
4.973IleAla: 4.973 ± 0.059
0.309IleCys: 0.309 ± 0.013
2.497IleAsp: 2.497 ± 0.04
2.088IleGlu: 2.088 ± 0.035
0.844IlePhe: 0.844 ± 0.022
3.844IleGly: 3.844 ± 0.048
0.657IleHis: 0.657 ± 0.017
1.05IleIle: 1.05 ± 0.028
0.874IleLys: 0.874 ± 0.023
2.608IleLeu: 2.608 ± 0.037
0.492IleMet: 0.492 ± 0.016
0.849IleAsn: 0.849 ± 0.022
1.846IlePro: 1.846 ± 0.031
0.851IleGln: 0.851 ± 0.023
2.269IleArg: 2.269 ± 0.033
1.991IleSer: 1.991 ± 0.033
2.385IleThr: 2.385 ± 0.036
3.042IleVal: 3.042 ± 0.036
0.439IleTrp: 0.439 ± 0.014
0.635IleTyr: 0.635 ± 0.019
0.0IleXaa: 0.0 ± 0.0
Lys
3.185LysAla: 3.185 ± 0.05
0.122LysCys: 0.122 ± 0.009
1.464LysAsp: 1.464 ± 0.031
1.213LysGlu: 1.213 ± 0.025
0.533LysPhe: 0.533 ± 0.017
2.019LysGly: 2.019 ± 0.046
0.481LysHis: 0.481 ± 0.014
1.067LysIle: 1.067 ± 0.027
0.999LysLys: 0.999 ± 0.028
2.285LysLeu: 2.285 ± 0.038
0.449LysMet: 0.449 ± 0.017
0.643LysAsn: 0.643 ± 0.02
1.445LysPro: 1.445 ± 0.028
0.822LysGln: 0.822 ± 0.02
1.529LysArg: 1.529 ± 0.029
1.292LysSer: 1.292 ± 0.028
1.496LysThr: 1.496 ± 0.031
1.988LysVal: 1.988 ± 0.036
0.298LysTrp: 0.298 ± 0.012
0.508LysTyr: 0.508 ± 0.018
0.0LysXaa: 0.0 ± 0.0
Leu
14.607LeuAla: 14.607 ± 0.116
0.769LeuCys: 0.769 ± 0.021
6.757LeuAsp: 6.757 ± 0.061
4.47LeuGlu: 4.47 ± 0.056
2.677LeuPhe: 2.677 ± 0.042
9.108LeuGly: 9.108 ± 0.072
2.229LeuHis: 2.229 ± 0.036
3.521LeuIle: 3.521 ± 0.056
2.156LeuLys: 2.156 ± 0.036
10.864LeuLeu: 10.864 ± 0.099
1.702LeuMet: 1.702 ± 0.03
1.873LeuAsn: 1.873 ± 0.029
6.247LeuPro: 6.247 ± 0.061
2.252LeuGln: 2.252 ± 0.039
8.359LeuArg: 8.359 ± 0.07
5.54LeuSer: 5.54 ± 0.054
7.016LeuThr: 7.016 ± 0.058
8.651LeuVal: 8.651 ± 0.072
1.257LeuTrp: 1.257 ± 0.028
1.915LeuTyr: 1.915 ± 0.037
0.001LeuXaa: 0.001 ± 0.001
Met
2.282MetAla: 2.282 ± 0.032
0.123MetCys: 0.123 ± 0.008
0.926MetAsp: 0.926 ± 0.021
0.783MetGlu: 0.783 ± 0.019
0.497MetPhe: 0.497 ± 0.016
1.351MetGly: 1.351 ± 0.027
0.353MetHis: 0.353 ± 0.013
0.739MetIle: 0.739 ± 0.023
0.47MetLys: 0.47 ± 0.015
1.73MetLeu: 1.73 ± 0.029
0.337MetMet: 0.337 ± 0.013
0.465MetAsn: 0.465 ± 0.016
1.178MetPro: 1.178 ± 0.025
0.489MetGln: 0.489 ± 0.016
1.483MetArg: 1.483 ± 0.025
1.399MetSer: 1.399 ± 0.024
1.646MetThr: 1.646 ± 0.026
1.3MetVal: 1.3 ± 0.023
0.214MetTrp: 0.214 ± 0.011
0.344MetTyr: 0.344 ± 0.012
0.0MetXaa: 0.0 ± 0.0
Asn
2.37AsnAla: 2.37 ± 0.038
0.162AsnCys: 0.162 ± 0.008
1.087AsnAsp: 1.087 ± 0.022
0.898AsnGlu: 0.898 ± 0.022
0.575AsnPhe: 0.575 ± 0.018
2.104AsnGly: 2.104 ± 0.036
0.413AsnHis: 0.413 ± 0.016
0.776AsnIle: 0.776 ± 0.021
0.507AsnLys: 0.507 ± 0.014
1.779AsnLeu: 1.779 ± 0.032
0.339AsnMet: 0.339 ± 0.012
0.549AsnAsn: 0.549 ± 0.02
1.437AsnPro: 1.437 ± 0.031
0.585AsnGln: 0.585 ± 0.018
1.308AsnArg: 1.308 ± 0.025
1.148AsnSer: 1.148 ± 0.028
1.274AsnThr: 1.274 ± 0.031
1.5AsnVal: 1.5 ± 0.029
0.349AsnTrp: 0.349 ± 0.013
0.499AsnTyr: 0.499 ± 0.015
0.0AsnXaa: 0.0 ± 0.0
Pro
8.278ProAla: 8.278 ± 0.074
0.279ProCys: 0.279 ± 0.011
4.485ProAsp: 4.485 ± 0.056
3.945ProGlu: 3.945 ± 0.048
1.556ProPhe: 1.556 ± 0.027
6.197ProGly: 6.197 ± 0.064
1.288ProHis: 1.288 ± 0.027
1.363ProIle: 1.363 ± 0.026
1.282ProLys: 1.282 ± 0.026
5.164ProLeu: 5.164 ± 0.051
1.008ProMet: 1.008 ± 0.024
0.987ProAsn: 0.987 ± 0.023
3.136ProPro: 3.136 ± 0.053
1.86ProGln: 1.86 ± 0.031
3.467ProArg: 3.467 ± 0.044
3.11ProSer: 3.11 ± 0.044
3.136ProThr: 3.136 ± 0.041
5.314ProVal: 5.314 ± 0.054
0.855ProTrp: 0.855 ± 0.021
1.427ProTyr: 1.427 ± 0.029
0.0ProXaa: 0.0 ± 0.0
Gln
3.694GlnAla: 3.694 ± 0.044
0.166GlnCys: 0.166 ± 0.009
1.566GlnAsp: 1.566 ± 0.028
1.47GlnGlu: 1.47 ± 0.026
0.831GlnPhe: 0.831 ± 0.023
2.412GlnGly: 2.412 ± 0.037
0.697GlnHis: 0.697 ± 0.018
1.309GlnIle: 1.309 ± 0.029
0.686GlnLys: 0.686 ± 0.019
3.448GlnLeu: 3.448 ± 0.043
0.524GlnMet: 0.524 ± 0.016
0.572GlnAsn: 0.572 ± 0.018
1.722GlnPro: 1.722 ± 0.034
1.45GlnGln: 1.45 ± 0.043
2.33GlnArg: 2.33 ± 0.037
1.433GlnSer: 1.433 ± 0.024
1.501GlnThr: 1.501 ± 0.024
2.476GlnVal: 2.476 ± 0.039
0.479GlnTrp: 0.479 ± 0.017
0.681GlnTyr: 0.681 ± 0.023
0.0GlnXaa: 0.0 ± 0.0
Arg
9.127ArgAla: 9.127 ± 0.078
0.496ArgCys: 0.496 ± 0.018
4.163ArgAsp: 4.163 ± 0.044
4.389ArgGlu: 4.389 ± 0.053
2.265ArgPhe: 2.265 ± 0.031
5.444ArgGly: 5.444 ± 0.061
1.91ArgHis: 1.91 ± 0.032
3.296ArgIle: 3.296 ± 0.045
1.715ArgLys: 1.715 ± 0.033
8.221ArgLeu: 8.221 ± 0.079
1.656ArgMet: 1.656 ± 0.026
1.371ArgAsn: 1.371 ± 0.025
4.365ArgPro: 4.365 ± 0.055
2.339ArgGln: 2.339 ± 0.034
6.856ArgArg: 6.856 ± 0.064
4.017ArgSer: 4.017 ± 0.047
5.291ArgThr: 5.291 ± 0.055
5.557ArgVal: 5.557 ± 0.058
1.267ArgTrp: 1.267 ± 0.025
1.78ArgTyr: 1.78 ± 0.031
0.0ArgXaa: 0.0 ± 0.0
Ser
7.025SerAla: 7.025 ± 0.068
0.406SerCys: 0.406 ± 0.013
3.061SerAsp: 3.061 ± 0.043
2.441SerGlu: 2.441 ± 0.037
1.725SerPhe: 1.725 ± 0.03
6.074SerGly: 6.074 ± 0.064
1.093SerHis: 1.093 ± 0.024
1.674SerIle: 1.674 ± 0.027
1.193SerLys: 1.193 ± 0.027
4.986SerLeu: 4.986 ± 0.051
1.134SerMet: 1.134 ± 0.025
1.087SerAsn: 1.087 ± 0.026
3.036SerPro: 3.036 ± 0.039
1.43SerGln: 1.43 ± 0.027
3.658SerArg: 3.658 ± 0.041
3.078SerSer: 3.078 ± 0.046
3.168SerThr: 3.168 ± 0.042
4.597SerVal: 4.597 ± 0.044
0.935SerTrp: 0.935 ± 0.024
1.379SerTyr: 1.379 ± 0.025
0.0SerXaa: 0.0 ± 0.0
Thr
8.8ThrAla: 8.8 ± 0.075
0.377ThrCys: 0.377 ± 0.015
3.81ThrAsp: 3.81 ± 0.044
3.318ThrGlu: 3.318 ± 0.043
1.788ThrPhe: 1.788 ± 0.032
6.764ThrGly: 6.764 ± 0.075
1.195ThrHis: 1.195 ± 0.024
1.898ThrIle: 1.898 ± 0.032
1.377ThrLys: 1.377 ± 0.031
6.026ThrLeu: 6.026 ± 0.054
1.036ThrMet: 1.036 ± 0.022
1.164ThrAsn: 1.164 ± 0.03
4.074ThrPro: 4.074 ± 0.046
1.473ThrGln: 1.473 ± 0.03
3.686ThrArg: 3.686 ± 0.044
3.354ThrSer: 3.354 ± 0.045
4.035ThrThr: 4.035 ± 0.051
6.165ThrVal: 6.165 ± 0.052
0.855ThrTrp: 0.855 ± 0.022
1.384ThrTyr: 1.384 ± 0.03
0.0ThrXaa: 0.0 ± 0.0
Val
10.638ValAla: 10.638 ± 0.075
0.707ValCys: 0.707 ± 0.018
5.029ValAsp: 5.029 ± 0.052
4.683ValGlu: 4.683 ± 0.051
2.478ValPhe: 2.478 ± 0.036
6.586ValGly: 6.586 ± 0.058
1.831ValHis: 1.831 ± 0.03
3.076ValIle: 3.076 ± 0.041
1.945ValLys: 1.945 ± 0.034
9.202ValLeu: 9.202 ± 0.072
1.468ValMet: 1.468 ± 0.029
1.782ValAsn: 1.782 ± 0.032
5.045ValPro: 5.045 ± 0.047
2.166ValGln: 2.166 ± 0.033
6.971ValArg: 6.971 ± 0.073
4.589ValSer: 4.589 ± 0.053
5.764ValThr: 5.764 ± 0.065
7.997ValVal: 7.997 ± 0.071
1.102ValTrp: 1.102 ± 0.023
1.565ValTyr: 1.565 ± 0.03
0.0ValXaa: 0.0 ± 0.0
Trp
1.611TrpAla: 1.611 ± 0.03
0.145TrpCys: 0.145 ± 0.007
0.83TrpAsp: 0.83 ± 0.023
0.703TrpGlu: 0.703 ± 0.02
0.493TrpPhe: 0.493 ± 0.016
1.03TrpGly: 1.03 ± 0.024
0.374TrpHis: 0.374 ± 0.015
0.584TrpIle: 0.584 ± 0.016
0.371TrpLys: 0.371 ± 0.015
1.727TrpLeu: 1.727 ± 0.033
0.298TrpMet: 0.298 ± 0.011
0.403TrpAsn: 0.403 ± 0.014
0.782TrpPro: 0.782 ± 0.019
0.657TrpGln: 0.657 ± 0.021
1.246TrpArg: 1.246 ± 0.024
0.975TrpSer: 0.975 ± 0.024
1.021TrpThr: 1.021 ± 0.024
0.975TrpVal: 0.975 ± 0.024
0.318TrpTrp: 0.318 ± 0.014
0.361TrpTyr: 0.361 ± 0.016
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.751TyrAla: 2.751 ± 0.039
0.169TyrCys: 0.169 ± 0.008
1.557TyrAsp: 1.557 ± 0.032
1.312TyrGlu: 1.312 ± 0.029
0.695TyrPhe: 0.695 ± 0.021
2.332TyrGly: 2.332 ± 0.034
0.406TyrHis: 0.406 ± 0.013
0.571TyrIle: 0.571 ± 0.019
0.428TyrLys: 0.428 ± 0.015
2.158TyrLeu: 2.158 ± 0.035
0.285TyrMet: 0.285 ± 0.012
0.471TyrAsn: 0.471 ± 0.018
1.124TyrPro: 1.124 ± 0.025
0.69TyrGln: 0.69 ± 0.022
1.79TyrArg: 1.79 ± 0.029
1.049TyrSer: 1.049 ± 0.023
1.222TyrThr: 1.222 ± 0.027
1.71TyrVal: 1.71 ± 0.033
0.349TyrTrp: 0.349 ± 0.014
0.486TyrTyr: 0.486 ± 0.02
0.0TyrXaa: 0.0 ± 0.0
Xaa
0.001XaaAla: 0.001 ± 0.001
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
0.001XaaPro: 0.001 ± 0.001
0.0XaaGln: 0.0 ± 0.0
0.001XaaArg: 0.001 ± 0.001
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
0.033XaaXaa: 0.033 ± 0.011
Statistics based on 6908 proteins (2123277 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