Amino acid dipepetide frequency for Streptomyces sp. CB02488

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
21.514AlaAla: 21.514 ± 0.146
1.017AlaCys: 1.017 ± 0.024
8.333AlaAsp: 8.333 ± 0.071
8.538AlaGlu: 8.538 ± 0.081
3.533AlaPhe: 3.533 ± 0.04
13.504AlaGly: 13.504 ± 0.093
2.839AlaHis: 2.839 ± 0.035
3.477AlaIle: 3.477 ± 0.052
2.929AlaLys: 2.929 ± 0.047
14.49AlaLeu: 14.49 ± 0.1
2.614AlaMet: 2.614 ± 0.034
1.941AlaAsn: 1.941 ± 0.03
7.297AlaPro: 7.297 ± 0.075
3.802AlaGln: 3.802 ± 0.042
9.758AlaArg: 9.758 ± 0.073
6.069AlaSer: 6.069 ± 0.059
7.058AlaThr: 7.058 ± 0.062
12.325AlaVal: 12.325 ± 0.098
1.766AlaTrp: 1.766 ± 0.027
2.692AlaTyr: 2.692 ± 0.039
0.0AlaXaa: 0.0 ± 0.0
Cys
1.07CysAla: 1.07 ± 0.021
0.084CysCys: 0.084 ± 0.007
0.473CysAsp: 0.473 ± 0.014
0.405CysGlu: 0.405 ± 0.014
0.206CysPhe: 0.206 ± 0.009
0.948CysGly: 0.948 ± 0.022
0.193CysHis: 0.193 ± 0.009
0.171CysIle: 0.171 ± 0.008
0.115CysLys: 0.115 ± 0.008
0.695CysLeu: 0.695 ± 0.018
0.124CysMet: 0.124 ± 0.007
0.143CysAsn: 0.143 ± 0.008
0.445CysPro: 0.445 ± 0.015
0.148CysGln: 0.148 ± 0.008
0.571CysArg: 0.571 ± 0.017
0.429CysSer: 0.429 ± 0.014
0.492CysThr: 0.492 ± 0.014
0.649CysVal: 0.649 ± 0.018
0.13CysTrp: 0.13 ± 0.008
0.151CysTyr: 0.151 ± 0.008
0.0CysXaa: 0.0 ± 0.0
Asp
7.913AspAla: 7.913 ± 0.07
0.424AspCys: 0.424 ± 0.013
3.553AspAsp: 3.553 ± 0.042
3.905AspGlu: 3.905 ± 0.042
1.665AspPhe: 1.665 ± 0.026
6.545AspGly: 6.545 ± 0.061
1.389AspHis: 1.389 ± 0.025
2.003AspIle: 2.003 ± 0.033
1.237AspLys: 1.237 ± 0.03
5.92AspLeu: 5.92 ± 0.055
0.839AspMet: 0.839 ± 0.019
1.036AspAsn: 1.036 ± 0.023
4.437AspPro: 4.437 ± 0.048
1.533AspGln: 1.533 ± 0.028
4.938AspArg: 4.938 ± 0.046
2.799AspSer: 2.799 ± 0.036
3.316AspThr: 3.316 ± 0.039
4.52AspVal: 4.52 ± 0.047
1.077AspTrp: 1.077 ± 0.022
1.117AspTyr: 1.117 ± 0.024
0.0AspXaa: 0.0 ± 0.0
Glu
7.259GluAla: 7.259 ± 0.072
0.363GluCys: 0.363 ± 0.013
2.74GluAsp: 2.74 ± 0.035
3.404GluGlu: 3.404 ± 0.046
1.457GluPhe: 1.457 ± 0.025
4.242GluGly: 4.242 ± 0.041
1.455GluHis: 1.455 ± 0.024
2.253GluIle: 2.253 ± 0.036
1.457GluLys: 1.457 ± 0.031
6.902GluLeu: 6.902 ± 0.061
0.846GluMet: 0.846 ± 0.021
1.054GluAsn: 1.054 ± 0.021
3.424GluPro: 3.424 ± 0.047
2.248GluGln: 2.248 ± 0.036
5.27GluArg: 5.27 ± 0.054
2.741GluSer: 2.741 ± 0.037
2.884GluThr: 2.884 ± 0.032
4.222GluVal: 4.222 ± 0.049
0.758GluTrp: 0.758 ± 0.018
1.089GluTyr: 1.089 ± 0.024
0.0GluXaa: 0.0 ± 0.0
Phe
3.706PheAla: 3.706 ± 0.043
0.267PheCys: 0.267 ± 0.012
2.003PheAsp: 2.003 ± 0.035
1.407PheGlu: 1.407 ± 0.027
0.881PhePhe: 0.881 ± 0.023
3.085PheGly: 3.085 ± 0.038
0.619PheHis: 0.619 ± 0.014
0.778PheIle: 0.778 ± 0.02
0.52PheLys: 0.52 ± 0.016
2.606PheLeu: 2.606 ± 0.038
0.429PheMet: 0.429 ± 0.014
0.585PheAsn: 0.585 ± 0.015
1.405PhePro: 1.405 ± 0.025
0.684PheGln: 0.684 ± 0.018
1.849PheArg: 1.849 ± 0.027
1.556PheSer: 1.556 ± 0.025
2.068PheThr: 2.068 ± 0.029
2.197PheVal: 2.197 ± 0.029
0.419PheTrp: 0.419 ± 0.013
0.581PheTyr: 0.581 ± 0.018
0.0PheXaa: 0.0 ± 0.0
Gly
11.509GlyAla: 11.509 ± 0.085
0.823GlyCys: 0.823 ± 0.02
5.256GlyAsp: 5.256 ± 0.053
4.986GlyGlu: 4.986 ± 0.048
2.954GlyPhe: 2.954 ± 0.037
8.9GlyGly: 8.9 ± 0.079
2.382GlyHis: 2.382 ± 0.033
3.687GlyIle: 3.687 ± 0.041
2.549GlyLys: 2.549 ± 0.043
9.711GlyLeu: 9.711 ± 0.086
2.083GlyMet: 2.083 ± 0.031
1.838GlyAsn: 1.838 ± 0.032
5.357GlyPro: 5.357 ± 0.05
2.728GlyGln: 2.728 ± 0.038
7.769GlyArg: 7.769 ± 0.059
5.894GlySer: 5.894 ± 0.065
6.438GlyThr: 6.438 ± 0.071
7.342GlyVal: 7.342 ± 0.062
1.755GlyTrp: 1.755 ± 0.028
2.399GlyTyr: 2.399 ± 0.036
0.0GlyXaa: 0.0 ± 0.0
His
2.566HisAla: 2.566 ± 0.035
0.203HisCys: 0.203 ± 0.01
1.332HisAsp: 1.332 ± 0.024
1.203HisGlu: 1.203 ± 0.021
0.666HisPhe: 0.666 ± 0.017
2.404HisGly: 2.404 ± 0.033
0.68HisHis: 0.68 ± 0.02
0.729HisIle: 0.729 ± 0.017
0.337HisLys: 0.337 ± 0.012
2.356HisLeu: 2.356 ± 0.034
0.335HisMet: 0.335 ± 0.012
0.393HisAsn: 0.393 ± 0.013
1.801HisPro: 1.801 ± 0.029
0.634HisGln: 0.634 ± 0.018
2.072HisArg: 2.072 ± 0.031
1.071HisSer: 1.071 ± 0.021
1.328HisThr: 1.328 ± 0.024
1.583HisVal: 1.583 ± 0.028
0.383HisTrp: 0.383 ± 0.013
0.469HisTyr: 0.469 ± 0.015
0.0HisXaa: 0.0 ± 0.0
Ile
4.951IleAla: 4.951 ± 0.055
0.307IleCys: 0.307 ± 0.012
2.39IleAsp: 2.39 ± 0.035
2.087IleGlu: 2.087 ± 0.03
0.726IlePhe: 0.726 ± 0.019
3.862IleGly: 3.862 ± 0.044
0.611IleHis: 0.611 ± 0.017
0.935IleIle: 0.935 ± 0.023
0.784IleLys: 0.784 ± 0.019
2.469IleLeu: 2.469 ± 0.037
0.463IleMet: 0.463 ± 0.013
0.752IleAsn: 0.752 ± 0.019
1.821IlePro: 1.821 ± 0.028
0.762IleGln: 0.762 ± 0.017
2.245IleArg: 2.245 ± 0.029
1.82IleSer: 1.82 ± 0.023
2.292IleThr: 2.292 ± 0.034
2.78IleVal: 2.78 ± 0.04
0.39IleTrp: 0.39 ± 0.013
0.533IleTyr: 0.533 ± 0.014
0.0IleXaa: 0.0 ± 0.0
Lys
2.922LysAla: 2.922 ± 0.047
0.115LysCys: 0.115 ± 0.007
1.43LysAsp: 1.43 ± 0.028
1.204LysGlu: 1.204 ± 0.029
0.475LysPhe: 0.475 ± 0.017
1.924LysGly: 1.924 ± 0.038
0.445LysHis: 0.445 ± 0.012
0.902LysIle: 0.902 ± 0.02
0.965LysLys: 0.965 ± 0.032
2.083LysLeu: 2.083 ± 0.03
0.417LysMet: 0.417 ± 0.012
0.554LysAsn: 0.554 ± 0.015
1.349LysPro: 1.349 ± 0.031
0.735LysGln: 0.735 ± 0.024
1.398LysArg: 1.398 ± 0.027
1.253LysSer: 1.253 ± 0.025
1.321LysThr: 1.321 ± 0.027
1.901LysVal: 1.901 ± 0.033
0.278LysTrp: 0.278 ± 0.012
0.474LysTyr: 0.474 ± 0.015
0.0LysXaa: 0.0 ± 0.0
Leu
14.757LeuAla: 14.757 ± 0.099
0.837LeuCys: 0.837 ± 0.02
6.9LeuAsp: 6.9 ± 0.057
4.493LeuGlu: 4.493 ± 0.047
2.632LeuPhe: 2.632 ± 0.035
9.326LeuGly: 9.326 ± 0.081
2.298LeuHis: 2.298 ± 0.034
3.513LeuIle: 3.513 ± 0.053
2.048LeuLys: 2.048 ± 0.038
11.205LeuLeu: 11.205 ± 0.102
1.727LeuMet: 1.727 ± 0.03
1.784LeuAsn: 1.784 ± 0.028
6.486LeuPro: 6.486 ± 0.051
2.178LeuGln: 2.178 ± 0.029
8.432LeuArg: 8.432 ± 0.066
5.49LeuSer: 5.49 ± 0.055
6.904LeuThr: 6.904 ± 0.056
8.651LeuVal: 8.651 ± 0.073
1.276LeuTrp: 1.276 ± 0.027
1.82LeuTyr: 1.82 ± 0.031
0.0LeuXaa: 0.0 ± 0.0
Met
2.285MetAla: 2.285 ± 0.03
0.132MetCys: 0.132 ± 0.006
0.925MetAsp: 0.925 ± 0.02
0.774MetGlu: 0.774 ± 0.016
0.482MetPhe: 0.482 ± 0.014
1.371MetGly: 1.371 ± 0.026
0.363MetHis: 0.363 ± 0.013
0.715MetIle: 0.715 ± 0.015
0.431MetLys: 0.431 ± 0.013
1.712MetLeu: 1.712 ± 0.037
0.331MetMet: 0.331 ± 0.014
0.461MetAsn: 0.461 ± 0.014
1.15MetPro: 1.15 ± 0.024
0.448MetGln: 0.448 ± 0.013
1.447MetArg: 1.447 ± 0.025
1.386MetSer: 1.386 ± 0.026
1.548MetThr: 1.548 ± 0.025
1.358MetVal: 1.358 ± 0.023
0.221MetTrp: 0.221 ± 0.009
0.332MetTyr: 0.332 ± 0.012
0.0MetXaa: 0.0 ± 0.0
Asn
2.241AsnAla: 2.241 ± 0.035
0.163AsnCys: 0.163 ± 0.009
0.999AsnAsp: 0.999 ± 0.022
0.864AsnGlu: 0.864 ± 0.017
0.509AsnPhe: 0.509 ± 0.014
2.075AsnGly: 2.075 ± 0.034
0.413AsnHis: 0.413 ± 0.015
0.697AsnIle: 0.697 ± 0.019
0.446AsnLys: 0.446 ± 0.014
1.649AsnLeu: 1.649 ± 0.029
0.318AsnMet: 0.318 ± 0.013
0.473AsnAsn: 0.473 ± 0.016
1.319AsnPro: 1.319 ± 0.028
0.537AsnGln: 0.537 ± 0.015
1.296AsnArg: 1.296 ± 0.022
1.029AsnSer: 1.029 ± 0.022
1.178AsnThr: 1.178 ± 0.025
1.39AsnVal: 1.39 ± 0.025
0.296AsnTrp: 0.296 ± 0.011
0.426AsnTyr: 0.426 ± 0.015
0.0AsnXaa: 0.0 ± 0.0
Pro
8.924ProAla: 8.924 ± 0.078
0.308ProCys: 0.308 ± 0.012
4.541ProAsp: 4.541 ± 0.047
4.27ProGlu: 4.27 ± 0.043
1.556ProPhe: 1.556 ± 0.028
6.783ProGly: 6.783 ± 0.063
1.338ProHis: 1.338 ± 0.026
1.184ProIle: 1.184 ± 0.021
1.228ProLys: 1.228 ± 0.026
5.366ProLeu: 5.366 ± 0.047
0.998ProMet: 0.998 ± 0.018
0.882ProAsn: 0.882 ± 0.021
3.376ProPro: 3.376 ± 0.055
1.87ProGln: 1.87 ± 0.037
3.702ProArg: 3.702 ± 0.041
3.172ProSer: 3.172 ± 0.042
3.0ProThr: 3.0 ± 0.039
5.632ProVal: 5.632 ± 0.049
0.884ProTrp: 0.884 ± 0.016
1.379ProTyr: 1.379 ± 0.025
0.0ProXaa: 0.0 ± 0.0
Gln
3.565GlnAla: 3.565 ± 0.044
0.164GlnCys: 0.164 ± 0.008
1.514GlnAsp: 1.514 ± 0.027
1.524GlnGlu: 1.524 ± 0.028
0.696GlnPhe: 0.696 ± 0.017
2.352GlnGly: 2.352 ± 0.034
0.659GlnHis: 0.659 ± 0.017
1.128GlnIle: 1.128 ± 0.022
0.638GlnLys: 0.638 ± 0.016
3.126GlnLeu: 3.126 ± 0.044
0.489GlnMet: 0.489 ± 0.017
0.548GlnAsn: 0.548 ± 0.017
1.735GlnPro: 1.735 ± 0.042
1.389GlnGln: 1.389 ± 0.038
2.282GlnArg: 2.282 ± 0.036
1.362GlnSer: 1.362 ± 0.026
1.307GlnThr: 1.307 ± 0.023
2.259GlnVal: 2.259 ± 0.032
0.495GlnTrp: 0.495 ± 0.017
0.632GlnTyr: 0.632 ± 0.017
0.0GlnXaa: 0.0 ± 0.0
Arg
9.485ArgAla: 9.485 ± 0.07
0.566ArgCys: 0.566 ± 0.015
4.131ArgAsp: 4.131 ± 0.047
4.589ArgGlu: 4.589 ± 0.048
2.324ArgPhe: 2.324 ± 0.03
5.711ArgGly: 5.711 ± 0.052
1.939ArgHis: 1.939 ± 0.028
3.439ArgIle: 3.439 ± 0.036
1.599ArgLys: 1.599 ± 0.03
8.451ArgLeu: 8.451 ± 0.066
1.742ArgMet: 1.742 ± 0.026
1.428ArgAsn: 1.428 ± 0.026
4.723ArgPro: 4.723 ± 0.047
2.199ArgGln: 2.199 ± 0.032
7.185ArgArg: 7.185 ± 0.067
4.24ArgSer: 4.24 ± 0.045
5.579ArgThr: 5.579 ± 0.054
5.475ArgVal: 5.475 ± 0.051
1.296ArgTrp: 1.296 ± 0.021
1.78ArgTyr: 1.78 ± 0.032
0.0ArgXaa: 0.0 ± 0.0
Ser
7.009SerAla: 7.009 ± 0.058
0.409SerCys: 0.409 ± 0.013
2.899SerAsp: 2.899 ± 0.037
2.523SerGlu: 2.523 ± 0.04
1.631SerPhe: 1.631 ± 0.028
6.424SerGly: 6.424 ± 0.055
1.07SerHis: 1.07 ± 0.023
1.543SerIle: 1.543 ± 0.028
1.128SerLys: 1.128 ± 0.024
4.991SerLeu: 4.991 ± 0.048
1.151SerMet: 1.151 ± 0.023
0.922SerAsn: 0.922 ± 0.022
3.223SerPro: 3.223 ± 0.041
1.314SerGln: 1.314 ± 0.025
3.747SerArg: 3.747 ± 0.039
3.096SerSer: 3.096 ± 0.049
3.217SerThr: 3.217 ± 0.04
4.529SerVal: 4.529 ± 0.044
0.965SerTrp: 0.965 ± 0.021
1.3SerTyr: 1.3 ± 0.028
0.0SerXaa: 0.0 ± 0.0
Thr
9.048ThrAla: 9.048 ± 0.07
0.423ThrCys: 0.423 ± 0.015
3.741ThrAsp: 3.741 ± 0.042
3.373ThrGlu: 3.373 ± 0.038
1.662ThrPhe: 1.662 ± 0.029
7.219ThrGly: 7.219 ± 0.073
1.205ThrHis: 1.205 ± 0.022
1.673ThrIle: 1.673 ± 0.028
1.178ThrLys: 1.178 ± 0.025
5.708ThrLeu: 5.708 ± 0.048
0.936ThrMet: 0.936 ± 0.02
1.01ThrAsn: 1.01 ± 0.024
3.999ThrPro: 3.999 ± 0.041
1.332ThrGln: 1.332 ± 0.025
3.766ThrArg: 3.766 ± 0.045
3.187ThrSer: 3.187 ± 0.04
3.792ThrThr: 3.792 ± 0.049
6.165ThrVal: 6.165 ± 0.053
0.85ThrTrp: 0.85 ± 0.017
1.365ThrTyr: 1.365 ± 0.027
0.0ThrXaa: 0.0 ± 0.0
Val
10.354ValAla: 10.354 ± 0.083
0.711ValCys: 0.711 ± 0.016
4.744ValAsp: 4.744 ± 0.045
4.521ValGlu: 4.521 ± 0.053
2.432ValPhe: 2.432 ± 0.035
6.294ValGly: 6.294 ± 0.06
1.926ValHis: 1.926 ± 0.028
3.062ValIle: 3.062 ± 0.038
1.76ValLys: 1.76 ± 0.036
9.515ValLeu: 9.515 ± 0.081
1.475ValMet: 1.475 ± 0.025
1.663ValAsn: 1.663 ± 0.028
5.194ValPro: 5.194 ± 0.05
2.087ValGln: 2.087 ± 0.027
7.065ValArg: 7.065 ± 0.059
4.518ValSer: 4.518 ± 0.042
5.63ValThr: 5.63 ± 0.048
7.615ValVal: 7.615 ± 0.072
1.11ValTrp: 1.11 ± 0.018
1.531ValTyr: 1.531 ± 0.024
0.0ValXaa: 0.0 ± 0.0
Trp
1.635TrpAla: 1.635 ± 0.028
0.156TrpCys: 0.156 ± 0.008
0.834TrpAsp: 0.834 ± 0.018
0.73TrpGlu: 0.73 ± 0.019
0.509TrpPhe: 0.509 ± 0.015
1.065TrpGly: 1.065 ± 0.022
0.353TrpHis: 0.353 ± 0.013
0.563TrpIle: 0.563 ± 0.015
0.386TrpLys: 0.386 ± 0.012
1.716TrpLeu: 1.716 ± 0.027
0.301TrpMet: 0.301 ± 0.01
0.423TrpAsn: 0.423 ± 0.014
0.763TrpPro: 0.763 ± 0.019
0.651TrpGln: 0.651 ± 0.017
1.247TrpArg: 1.247 ± 0.022
0.975TrpSer: 0.975 ± 0.021
1.049TrpThr: 1.049 ± 0.023
1.0TrpVal: 1.0 ± 0.022
0.331TrpTrp: 0.331 ± 0.014
0.357TrpTyr: 0.357 ± 0.015
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.783TyrAla: 2.783 ± 0.034
0.169TyrCys: 0.169 ± 0.008
1.426TyrAsp: 1.426 ± 0.029
1.268TyrGlu: 1.268 ± 0.023
0.649TyrPhe: 0.649 ± 0.016
2.323TyrGly: 2.323 ± 0.03
0.369TyrHis: 0.369 ± 0.013
0.53TyrIle: 0.53 ± 0.016
0.414TyrLys: 0.414 ± 0.014
2.088TyrLeu: 2.088 ± 0.034
0.255TyrMet: 0.255 ± 0.01
0.426TyrAsn: 0.426 ± 0.014
1.088TyrPro: 1.088 ± 0.025
0.584TyrGln: 0.584 ± 0.017
1.841TyrArg: 1.841 ± 0.029
1.002TyrSer: 1.002 ± 0.023
1.232TyrThr: 1.232 ± 0.026
1.616TyrVal: 1.616 ± 0.026
0.365TyrTrp: 0.365 ± 0.013
0.455TyrTyr: 0.455 ± 0.017
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
0.001XaaXaa: 0.001 ± 0.001
Statistics based on 7296 proteins (2468403 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