Amino acid dipepetide frequency for Streptomyces indicus

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
22.024AlaAla: 22.024 ± 0.168
1.044AlaCys: 1.044 ± 0.023
8.224AlaAsp: 8.224 ± 0.066
9.39AlaGlu: 9.39 ± 0.092
3.558AlaPhe: 3.558 ± 0.044
13.32AlaGly: 13.32 ± 0.097
2.832AlaHis: 2.832 ± 0.04
3.508AlaIle: 3.508 ± 0.047
3.41AlaLys: 3.41 ± 0.052
14.663AlaLeu: 14.663 ± 0.112
2.565AlaMet: 2.565 ± 0.033
1.903AlaAsn: 1.903 ± 0.035
7.538AlaPro: 7.538 ± 0.085
4.118AlaGln: 4.118 ± 0.045
10.055AlaArg: 10.055 ± 0.091
5.957AlaSer: 5.957 ± 0.057
6.685AlaThr: 6.685 ± 0.065
12.059AlaVal: 12.059 ± 0.086
1.924AlaTrp: 1.924 ± 0.03
2.995AlaTyr: 2.995 ± 0.036
0.0AlaXaa: 0.0 ± 0.0
Cys
1.116CysAla: 1.116 ± 0.025
0.088CysCys: 0.088 ± 0.006
0.428CysAsp: 0.428 ± 0.013
0.406CysGlu: 0.406 ± 0.013
0.214CysPhe: 0.214 ± 0.009
0.966CysGly: 0.966 ± 0.02
0.186CysHis: 0.186 ± 0.009
0.181CysIle: 0.181 ± 0.009
0.139CysLys: 0.139 ± 0.008
0.728CysLeu: 0.728 ± 0.018
0.124CysMet: 0.124 ± 0.008
0.142CysAsn: 0.142 ± 0.008
0.46CysPro: 0.46 ± 0.015
0.15CysGln: 0.15 ± 0.008
0.579CysArg: 0.579 ± 0.017
0.405CysSer: 0.405 ± 0.013
0.539CysThr: 0.539 ± 0.016
0.648CysVal: 0.648 ± 0.017
0.117CysTrp: 0.117 ± 0.006
0.144CysTyr: 0.144 ± 0.008
0.0CysXaa: 0.0 ± 0.0
Asp
7.63AspAla: 7.63 ± 0.072
0.42AspCys: 0.42 ± 0.014
3.216AspAsp: 3.216 ± 0.044
4.094AspGlu: 4.094 ± 0.043
1.585AspPhe: 1.585 ± 0.029
6.284AspGly: 6.284 ± 0.058
1.331AspHis: 1.331 ± 0.024
1.829AspIle: 1.829 ± 0.027
1.454AspLys: 1.454 ± 0.032
6.017AspLeu: 6.017 ± 0.059
0.814AspMet: 0.814 ± 0.02
0.932AspAsn: 0.932 ± 0.024
4.44AspPro: 4.44 ± 0.049
1.532AspGln: 1.532 ± 0.023
4.615AspArg: 4.615 ± 0.052
2.504AspSer: 2.504 ± 0.033
3.095AspThr: 3.095 ± 0.037
4.311AspVal: 4.311 ± 0.046
1.003AspTrp: 1.003 ± 0.022
1.065AspTyr: 1.065 ± 0.023
0.0AspXaa: 0.0 ± 0.0
Glu
7.78GluAla: 7.78 ± 0.073
0.371GluCys: 0.371 ± 0.014
3.123GluAsp: 3.123 ± 0.032
3.791GluGlu: 3.791 ± 0.053
1.607GluPhe: 1.607 ± 0.028
4.851GluGly: 4.851 ± 0.05
1.556GluHis: 1.556 ± 0.026
2.316GluIle: 2.316 ± 0.038
1.68GluLys: 1.68 ± 0.033
7.168GluLeu: 7.168 ± 0.067
0.896GluMet: 0.896 ± 0.022
1.033GluAsn: 1.033 ± 0.019
3.509GluPro: 3.509 ± 0.042
2.57GluGln: 2.57 ± 0.038
5.52GluArg: 5.52 ± 0.055
2.671GluSer: 2.671 ± 0.036
2.913GluThr: 2.913 ± 0.043
4.612GluVal: 4.612 ± 0.05
0.776GluTrp: 0.776 ± 0.018
1.099GluTyr: 1.099 ± 0.027
0.0GluXaa: 0.0 ± 0.0
Phe
3.921PheAla: 3.921 ± 0.046
0.261PheCys: 0.261 ± 0.012
1.87PheAsp: 1.87 ± 0.033
1.478PheGlu: 1.478 ± 0.027
0.901PhePhe: 0.901 ± 0.023
3.106PheGly: 3.106 ± 0.045
0.585PheHis: 0.585 ± 0.015
0.759PheIle: 0.759 ± 0.023
0.64PheLys: 0.64 ± 0.017
2.675PheLeu: 2.675 ± 0.038
0.408PheMet: 0.408 ± 0.015
0.563PheAsn: 0.563 ± 0.016
1.34PhePro: 1.34 ± 0.024
0.666PheGln: 0.666 ± 0.017
1.783PheArg: 1.783 ± 0.031
1.409PheSer: 1.409 ± 0.025
2.057PheThr: 2.057 ± 0.035
2.252PheVal: 2.252 ± 0.037
0.42PheTrp: 0.42 ± 0.012
0.555PheTyr: 0.555 ± 0.015
0.0PheXaa: 0.0 ± 0.0
Gly
11.585GlyAla: 11.585 ± 0.09
0.835GlyCys: 0.835 ± 0.018
5.029GlyAsp: 5.029 ± 0.047
5.583GlyGlu: 5.583 ± 0.053
2.958GlyPhe: 2.958 ± 0.042
9.06GlyGly: 9.06 ± 0.083
2.195GlyHis: 2.195 ± 0.035
3.591GlyIle: 3.591 ± 0.047
2.879GlyLys: 2.879 ± 0.047
9.532GlyLeu: 9.532 ± 0.077
2.016GlyMet: 2.016 ± 0.027
1.746GlyAsn: 1.746 ± 0.034
5.274GlyPro: 5.274 ± 0.057
2.807GlyGln: 2.807 ± 0.035
7.664GlyArg: 7.664 ± 0.066
5.424GlySer: 5.424 ± 0.053
6.116GlyThr: 6.116 ± 0.066
7.242GlyVal: 7.242 ± 0.058
1.692GlyTrp: 1.692 ± 0.029
2.281GlyTyr: 2.281 ± 0.033
0.0GlyXaa: 0.0 ± 0.0
His
2.682HisAla: 2.682 ± 0.032
0.205HisCys: 0.205 ± 0.009
1.22HisAsp: 1.22 ± 0.024
1.266HisGlu: 1.266 ± 0.022
0.654HisPhe: 0.654 ± 0.019
2.308HisGly: 2.308 ± 0.034
0.633HisHis: 0.633 ± 0.016
0.673HisIle: 0.673 ± 0.019
0.403HisLys: 0.403 ± 0.013
2.332HisLeu: 2.332 ± 0.032
0.321HisMet: 0.321 ± 0.011
0.371HisAsn: 0.371 ± 0.011
1.821HisPro: 1.821 ± 0.033
0.628HisGln: 0.628 ± 0.017
1.95HisArg: 1.95 ± 0.033
0.98HisSer: 0.98 ± 0.022
1.338HisThr: 1.338 ± 0.027
1.584HisVal: 1.584 ± 0.023
0.362HisTrp: 0.362 ± 0.012
0.473HisTyr: 0.473 ± 0.013
0.0HisXaa: 0.0 ± 0.0
Ile
4.959IleAla: 4.959 ± 0.049
0.301IleCys: 0.301 ± 0.011
2.186IleAsp: 2.186 ± 0.033
2.134IleGlu: 2.134 ± 0.035
0.726IlePhe: 0.726 ± 0.017
3.713IleGly: 3.713 ± 0.04
0.605IleHis: 0.605 ± 0.016
0.877IleIle: 0.877 ± 0.026
0.851IleLys: 0.851 ± 0.024
2.517IleLeu: 2.517 ± 0.033
0.439IleMet: 0.439 ± 0.014
0.684IleAsn: 0.684 ± 0.019
1.861IlePro: 1.861 ± 0.029
0.737IleGln: 0.737 ± 0.021
2.221IleArg: 2.221 ± 0.031
1.686IleSer: 1.686 ± 0.031
2.201IleThr: 2.201 ± 0.032
2.782IleVal: 2.782 ± 0.032
0.403IleTrp: 0.403 ± 0.015
0.518IleTyr: 0.518 ± 0.015
0.0IleXaa: 0.0 ± 0.0
Lys
3.447LysAla: 3.447 ± 0.046
0.131LysCys: 0.131 ± 0.007
1.598LysAsp: 1.598 ± 0.032
1.452LysGlu: 1.452 ± 0.03
0.572LysPhe: 0.572 ± 0.018
2.177LysGly: 2.177 ± 0.04
0.507LysHis: 0.507 ± 0.014
0.972LysIle: 0.972 ± 0.023
1.075LysLys: 1.075 ± 0.032
2.343LysLeu: 2.343 ± 0.036
0.432LysMet: 0.432 ± 0.013
0.58LysAsn: 0.58 ± 0.019
1.612LysPro: 1.612 ± 0.029
0.831LysGln: 0.831 ± 0.022
1.57LysArg: 1.57 ± 0.026
1.346LysSer: 1.346 ± 0.03
1.416LysThr: 1.416 ± 0.032
2.242LysVal: 2.242 ± 0.038
0.315LysTrp: 0.315 ± 0.013
0.501LysTyr: 0.501 ± 0.014
0.0LysXaa: 0.0 ± 0.0
Leu
15.36LeuAla: 15.36 ± 0.121
0.831LeuCys: 0.831 ± 0.02
6.726LeuAsp: 6.726 ± 0.065
4.659LeuGlu: 4.659 ± 0.055
2.692LeuPhe: 2.692 ± 0.039
9.422LeuGly: 9.422 ± 0.077
2.256LeuHis: 2.256 ± 0.034
3.455LeuIle: 3.455 ± 0.045
2.37LeuLys: 2.37 ± 0.035
11.344LeuLeu: 11.344 ± 0.1
1.683LeuMet: 1.683 ± 0.03
1.668LeuAsn: 1.668 ± 0.025
6.45LeuPro: 6.45 ± 0.057
2.242LeuGln: 2.242 ± 0.029
8.23LeuArg: 8.23 ± 0.076
5.076LeuSer: 5.076 ± 0.045
6.852LeuThr: 6.852 ± 0.062
8.636LeuVal: 8.636 ± 0.072
1.304LeuTrp: 1.304 ± 0.027
1.869LeuTyr: 1.869 ± 0.029
0.0LeuXaa: 0.0 ± 0.0
Met
2.231MetAla: 2.231 ± 0.03
0.142MetCys: 0.142 ± 0.008
0.894MetAsp: 0.894 ± 0.022
0.782MetGlu: 0.782 ± 0.019
0.458MetPhe: 0.458 ± 0.014
1.353MetGly: 1.353 ± 0.025
0.347MetHis: 0.347 ± 0.014
0.667MetIle: 0.667 ± 0.017
0.46MetLys: 0.46 ± 0.015
1.693MetLeu: 1.693 ± 0.028
0.297MetMet: 0.297 ± 0.014
0.44MetAsn: 0.44 ± 0.013
1.121MetPro: 1.121 ± 0.024
0.493MetGln: 0.493 ± 0.016
1.388MetArg: 1.388 ± 0.025
1.334MetSer: 1.334 ± 0.023
1.576MetThr: 1.576 ± 0.03
1.28MetVal: 1.28 ± 0.025
0.222MetTrp: 0.222 ± 0.01
0.328MetTyr: 0.328 ± 0.013
0.0MetXaa: 0.0 ± 0.0
Asn
2.193AsnAla: 2.193 ± 0.032
0.162AsnCys: 0.162 ± 0.009
0.88AsnAsp: 0.88 ± 0.02
0.865AsnGlu: 0.865 ± 0.02
0.487AsnPhe: 0.487 ± 0.015
1.914AsnGly: 1.914 ± 0.036
0.37AsnHis: 0.37 ± 0.011
0.652AsnIle: 0.652 ± 0.018
0.459AsnLys: 0.459 ± 0.015
1.622AsnLeu: 1.622 ± 0.029
0.296AsnMet: 0.296 ± 0.012
0.444AsnAsn: 0.444 ± 0.016
1.389AsnPro: 1.389 ± 0.026
0.473AsnGln: 0.473 ± 0.015
1.175AsnArg: 1.175 ± 0.022
0.933AsnSer: 0.933 ± 0.021
1.094AsnThr: 1.094 ± 0.026
1.339AsnVal: 1.339 ± 0.023
0.295AsnTrp: 0.295 ± 0.012
0.394AsnTyr: 0.394 ± 0.014
0.0AsnXaa: 0.0 ± 0.0
Pro
8.899ProAla: 8.899 ± 0.087
0.345ProCys: 0.345 ± 0.013
4.325ProAsp: 4.325 ± 0.05
4.558ProGlu: 4.558 ± 0.044
1.51ProPhe: 1.51 ± 0.023
6.467ProGly: 6.467 ± 0.066
1.426ProHis: 1.426 ± 0.026
1.269ProIle: 1.269 ± 0.028
1.404ProLys: 1.404 ± 0.028
5.336ProLeu: 5.336 ± 0.053
0.99ProMet: 0.99 ± 0.019
0.888ProAsn: 0.888 ± 0.02
3.49ProPro: 3.49 ± 0.061
2.019ProGln: 2.019 ± 0.036
3.811ProArg: 3.811 ± 0.041
3.159ProSer: 3.159 ± 0.041
3.059ProThr: 3.059 ± 0.041
5.44ProVal: 5.44 ± 0.049
0.912ProTrp: 0.912 ± 0.019
1.497ProTyr: 1.497 ± 0.03
0.0ProXaa: 0.0 ± 0.0
Gln
3.948GlnAla: 3.948 ± 0.046
0.177GlnCys: 0.177 ± 0.01
1.435GlnAsp: 1.435 ± 0.026
1.622GlnGlu: 1.622 ± 0.028
0.733GlnPhe: 0.733 ± 0.017
2.525GlnGly: 2.525 ± 0.034
0.703GlnHis: 0.703 ± 0.017
1.128GlnIle: 1.128 ± 0.019
0.71GlnLys: 0.71 ± 0.018
3.309GlnLeu: 3.309 ± 0.033
0.501GlnMet: 0.501 ± 0.015
0.528GlnAsn: 0.528 ± 0.016
1.827GlnPro: 1.827 ± 0.041
1.372GlnGln: 1.372 ± 0.033
2.323GlnArg: 2.323 ± 0.034
1.294GlnSer: 1.294 ± 0.025
1.399GlnThr: 1.399 ± 0.026
2.355GlnVal: 2.355 ± 0.032
0.476GlnTrp: 0.476 ± 0.015
0.584GlnTyr: 0.584 ± 0.015
0.0GlnXaa: 0.0 ± 0.0
Arg
9.729ArgAla: 9.729 ± 0.096
0.562ArgCys: 0.562 ± 0.015
3.919ArgAsp: 3.919 ± 0.043
4.849ArgGlu: 4.849 ± 0.054
2.229ArgPhe: 2.229 ± 0.031
5.784ArgGly: 5.784 ± 0.056
1.937ArgHis: 1.937 ± 0.033
3.456ArgIle: 3.456 ± 0.041
1.874ArgLys: 1.874 ± 0.032
8.244ArgLeu: 8.244 ± 0.064
1.743ArgMet: 1.743 ± 0.025
1.324ArgAsn: 1.324 ± 0.027
4.613ArgPro: 4.613 ± 0.05
2.201ArgGln: 2.201 ± 0.031
7.333ArgArg: 7.333 ± 0.067
3.846ArgSer: 3.846 ± 0.044
5.475ArgThr: 5.475 ± 0.047
5.381ArgVal: 5.381 ± 0.054
1.309ArgTrp: 1.309 ± 0.026
1.674ArgTyr: 1.674 ± 0.028
0.0ArgXaa: 0.0 ± 0.0
Ser
6.869SerAla: 6.869 ± 0.059
0.407SerCys: 0.407 ± 0.012
2.602SerAsp: 2.602 ± 0.036
2.495SerGlu: 2.495 ± 0.033
1.517SerPhe: 1.517 ± 0.025
5.98SerGly: 5.98 ± 0.064
0.95SerHis: 0.95 ± 0.02
1.37SerIle: 1.37 ± 0.028
1.145SerLys: 1.145 ± 0.025
4.712SerLeu: 4.712 ± 0.051
1.045SerMet: 1.045 ± 0.021
0.843SerAsn: 0.843 ± 0.02
3.035SerPro: 3.035 ± 0.038
1.228SerGln: 1.228 ± 0.023
3.465SerArg: 3.465 ± 0.036
2.796SerSer: 2.796 ± 0.043
3.005SerThr: 3.005 ± 0.036
4.16SerVal: 4.16 ± 0.044
0.858SerTrp: 0.858 ± 0.02
1.264SerTyr: 1.264 ± 0.024
0.0SerXaa: 0.0 ± 0.0
Thr
8.619ThrAla: 8.619 ± 0.068
0.422ThrCys: 0.422 ± 0.013
3.499ThrAsp: 3.499 ± 0.044
3.338ThrGlu: 3.338 ± 0.042
1.629ThrPhe: 1.629 ± 0.03
6.505ThrGly: 6.505 ± 0.059
1.185ThrHis: 1.185 ± 0.023
1.678ThrIle: 1.678 ± 0.029
1.373ThrLys: 1.373 ± 0.028
5.665ThrLeu: 5.665 ± 0.054
0.934ThrMet: 0.934 ± 0.021
0.986ThrAsn: 0.986 ± 0.024
4.122ThrPro: 4.122 ± 0.052
1.391ThrGln: 1.391 ± 0.025
3.725ThrArg: 3.725 ± 0.037
3.081ThrSer: 3.081 ± 0.046
3.565ThrThr: 3.565 ± 0.051
5.888ThrVal: 5.888 ± 0.059
0.935ThrTrp: 0.935 ± 0.027
1.423ThrTyr: 1.423 ± 0.031
0.0ThrXaa: 0.0 ± 0.0
Val
10.227ValAla: 10.227 ± 0.077
0.73ValCys: 0.73 ± 0.017
4.724ValAsp: 4.724 ± 0.048
4.84ValGlu: 4.84 ± 0.054
2.453ValPhe: 2.453 ± 0.036
6.282ValGly: 6.282 ± 0.054
1.883ValHis: 1.883 ± 0.027
2.932ValIle: 2.932 ± 0.04
1.917ValLys: 1.917 ± 0.034
9.4ValLeu: 9.4 ± 0.067
1.449ValMet: 1.449 ± 0.027
1.535ValAsn: 1.535 ± 0.027
5.061ValPro: 5.061 ± 0.048
2.253ValGln: 2.253 ± 0.03
7.055ValArg: 7.055 ± 0.063
4.018ValSer: 4.018 ± 0.034
5.37ValThr: 5.37 ± 0.051
7.49ValVal: 7.49 ± 0.069
1.143ValTrp: 1.143 ± 0.026
1.594ValTyr: 1.594 ± 0.027
0.0ValXaa: 0.0 ± 0.0
Trp
1.648TrpAla: 1.648 ± 0.031
0.161TrpCys: 0.161 ± 0.007
0.81TrpAsp: 0.81 ± 0.02
0.741TrpGlu: 0.741 ± 0.021
0.513TrpPhe: 0.513 ± 0.014
1.104TrpGly: 1.104 ± 0.022
0.364TrpHis: 0.364 ± 0.013
0.582TrpIle: 0.582 ± 0.017
0.407TrpLys: 0.407 ± 0.012
1.794TrpLeu: 1.794 ± 0.03
0.296TrpMet: 0.296 ± 0.012
0.402TrpAsn: 0.402 ± 0.014
0.784TrpPro: 0.784 ± 0.02
0.654TrpGln: 0.654 ± 0.017
1.293TrpArg: 1.293 ± 0.025
0.917TrpSer: 0.917 ± 0.019
1.012TrpThr: 1.012 ± 0.025
0.982TrpVal: 0.982 ± 0.024
0.341TrpTrp: 0.341 ± 0.012
0.354TrpTyr: 0.354 ± 0.014
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.905TyrAla: 2.905 ± 0.034
0.165TyrCys: 0.165 ± 0.006
1.461TyrAsp: 1.461 ± 0.036
1.499TyrGlu: 1.499 ± 0.027
0.654TyrPhe: 0.654 ± 0.016
2.386TyrGly: 2.386 ± 0.037
0.355TyrHis: 0.355 ± 0.011
0.505TyrIle: 0.505 ± 0.014
0.47TyrLys: 0.47 ± 0.015
2.034TyrLeu: 2.034 ± 0.031
0.255TyrMet: 0.255 ± 0.01
0.424TyrAsn: 0.424 ± 0.016
1.058TyrPro: 1.058 ± 0.023
0.581TyrGln: 0.581 ± 0.017
1.727TyrArg: 1.727 ± 0.026
0.908TyrSer: 0.908 ± 0.02
1.199TyrThr: 1.199 ± 0.026
1.674TyrVal: 1.674 ± 0.024
0.354TyrTrp: 0.354 ± 0.013
0.43TyrTyr: 0.43 ± 0.016
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 7387 proteins (2409369 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