Amino acid dipepetide frequency for Streptomyces sp. WZ.A104

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
21.652AlaAla: 21.652 ± 0.175
1.067AlaCys: 1.067 ± 0.024
8.325AlaAsp: 8.325 ± 0.066
9.116AlaGlu: 9.116 ± 0.094
3.535AlaPhe: 3.535 ± 0.048
12.77AlaGly: 12.77 ± 0.103
2.808AlaHis: 2.808 ± 0.036
3.496AlaIle: 3.496 ± 0.046
3.009AlaLys: 3.009 ± 0.054
14.626AlaLeu: 14.626 ± 0.1
2.524AlaMet: 2.524 ± 0.037
1.903AlaAsn: 1.903 ± 0.031
7.68AlaPro: 7.68 ± 0.084
3.694AlaGln: 3.694 ± 0.044
10.291AlaArg: 10.291 ± 0.084
6.145AlaSer: 6.145 ± 0.06
7.04AlaThr: 7.04 ± 0.07
12.18AlaVal: 12.18 ± 0.087
1.832AlaTrp: 1.832 ± 0.031
2.806AlaTyr: 2.806 ± 0.038
0.0AlaXaa: 0.0 ± 0.0
Cys
1.095CysAla: 1.095 ± 0.021
0.096CysCys: 0.096 ± 0.007
0.477CysAsp: 0.477 ± 0.014
0.41CysGlu: 0.41 ± 0.013
0.219CysPhe: 0.219 ± 0.01
0.949CysGly: 0.949 ± 0.023
0.189CysHis: 0.189 ± 0.01
0.175CysIle: 0.175 ± 0.009
0.121CysLys: 0.121 ± 0.007
0.717CysLeu: 0.717 ± 0.018
0.116CysMet: 0.116 ± 0.006
0.122CysAsn: 0.122 ± 0.007
0.527CysPro: 0.527 ± 0.016
0.162CysGln: 0.162 ± 0.008
0.637CysArg: 0.637 ± 0.018
0.454CysSer: 0.454 ± 0.016
0.54CysThr: 0.54 ± 0.015
0.616CysVal: 0.616 ± 0.017
0.123CysTrp: 0.123 ± 0.007
0.151CysTyr: 0.151 ± 0.009
0.0CysXaa: 0.0 ± 0.0
Asp
7.843AspAla: 7.843 ± 0.071
0.437AspCys: 0.437 ± 0.015
3.515AspAsp: 3.515 ± 0.049
3.987AspGlu: 3.987 ± 0.046
1.646AspPhe: 1.646 ± 0.031
6.31AspGly: 6.31 ± 0.062
1.434AspHis: 1.434 ± 0.026
1.886AspIle: 1.886 ± 0.029
1.203AspLys: 1.203 ± 0.029
6.121AspLeu: 6.121 ± 0.062
0.772AspMet: 0.772 ± 0.02
0.915AspAsn: 0.915 ± 0.021
4.552AspPro: 4.552 ± 0.045
1.532AspGln: 1.532 ± 0.03
5.18AspArg: 5.18 ± 0.061
2.611AspSer: 2.611 ± 0.037
3.201AspThr: 3.201 ± 0.036
4.508AspVal: 4.508 ± 0.047
1.003AspTrp: 1.003 ± 0.022
1.123AspTyr: 1.123 ± 0.022
0.0AspXaa: 0.0 ± 0.0
Glu
7.891GluAla: 7.891 ± 0.083
0.371GluCys: 0.371 ± 0.013
2.98GluAsp: 2.98 ± 0.038
3.779GluGlu: 3.779 ± 0.043
1.465GluPhe: 1.465 ± 0.029
4.621GluGly: 4.621 ± 0.053
1.525GluHis: 1.525 ± 0.028
2.323GluIle: 2.323 ± 0.033
1.549GluLys: 1.549 ± 0.031
6.91GluLeu: 6.91 ± 0.061
0.88GluMet: 0.88 ± 0.022
1.039GluAsn: 1.039 ± 0.025
3.467GluPro: 3.467 ± 0.048
2.31GluGln: 2.31 ± 0.037
5.684GluArg: 5.684 ± 0.057
2.677GluSer: 2.677 ± 0.035
2.924GluThr: 2.924 ± 0.035
4.463GluVal: 4.463 ± 0.045
0.751GluTrp: 0.751 ± 0.017
1.052GluTyr: 1.052 ± 0.023
0.0GluXaa: 0.0 ± 0.0
Phe
3.601PheAla: 3.601 ± 0.045
0.275PheCys: 0.275 ± 0.01
1.946PheAsp: 1.946 ± 0.029
1.431PheGlu: 1.431 ± 0.026
0.859PhePhe: 0.859 ± 0.023
2.975PheGly: 2.975 ± 0.041
0.604PheHis: 0.604 ± 0.018
0.769PheIle: 0.769 ± 0.02
0.496PheLys: 0.496 ± 0.017
2.582PheLeu: 2.582 ± 0.04
0.371PheMet: 0.371 ± 0.016
0.524PheAsn: 0.524 ± 0.014
1.406PhePro: 1.406 ± 0.024
0.641PheGln: 0.641 ± 0.018
1.845PheArg: 1.845 ± 0.026
1.462PheSer: 1.462 ± 0.028
2.011PheThr: 2.011 ± 0.03
2.097PheVal: 2.097 ± 0.035
0.408PheTrp: 0.408 ± 0.015
0.565PheTyr: 0.565 ± 0.016
0.0PheXaa: 0.0 ± 0.0
Gly
11.141GlyAla: 11.141 ± 0.093
0.853GlyCys: 0.853 ± 0.02
5.155GlyAsp: 5.155 ± 0.057
5.351GlyGlu: 5.351 ± 0.048
2.837GlyPhe: 2.837 ± 0.038
8.978GlyGly: 8.978 ± 0.099
2.307GlyHis: 2.307 ± 0.035
3.475GlyIle: 3.475 ± 0.041
2.524GlyLys: 2.524 ± 0.039
9.377GlyLeu: 9.377 ± 0.087
1.937GlyMet: 1.937 ± 0.03
1.739GlyAsn: 1.739 ± 0.038
5.531GlyPro: 5.531 ± 0.063
2.686GlyGln: 2.686 ± 0.035
7.948GlyArg: 7.948 ± 0.068
5.486GlySer: 5.486 ± 0.056
6.187GlyThr: 6.187 ± 0.066
7.098GlyVal: 7.098 ± 0.066
1.711GlyTrp: 1.711 ± 0.031
2.197GlyTyr: 2.197 ± 0.036
0.0GlyXaa: 0.0 ± 0.0
His
2.656HisAla: 2.656 ± 0.04
0.209HisCys: 0.209 ± 0.01
1.309HisAsp: 1.309 ± 0.026
1.195HisGlu: 1.195 ± 0.021
0.605HisPhe: 0.605 ± 0.017
2.384HisGly: 2.384 ± 0.037
0.712HisHis: 0.712 ± 0.021
0.698HisIle: 0.698 ± 0.019
0.347HisLys: 0.347 ± 0.013
2.456HisLeu: 2.456 ± 0.037
0.312HisMet: 0.312 ± 0.013
0.367HisAsn: 0.367 ± 0.013
1.8HisPro: 1.8 ± 0.031
0.673HisGln: 0.673 ± 0.021
2.239HisArg: 2.239 ± 0.039
1.069HisSer: 1.069 ± 0.024
1.352HisThr: 1.352 ± 0.028
1.627HisVal: 1.627 ± 0.024
0.353HisTrp: 0.353 ± 0.014
0.456HisTyr: 0.456 ± 0.014
0.0HisXaa: 0.0 ± 0.0
Ile
4.9IleAla: 4.9 ± 0.059
0.311IleCys: 0.311 ± 0.011
2.306IleAsp: 2.306 ± 0.036
2.053IleGlu: 2.053 ± 0.032
0.714IlePhe: 0.714 ± 0.02
3.636IleGly: 3.636 ± 0.045
0.624IleHis: 0.624 ± 0.018
0.932IleIle: 0.932 ± 0.023
0.752IleLys: 0.752 ± 0.021
2.42IleLeu: 2.42 ± 0.037
0.439IleMet: 0.439 ± 0.013
0.686IleAsn: 0.686 ± 0.018
1.819IlePro: 1.819 ± 0.031
0.758IleGln: 0.758 ± 0.018
2.277IleArg: 2.277 ± 0.034
1.69IleSer: 1.69 ± 0.03
2.243IleThr: 2.243 ± 0.034
2.709IleVal: 2.709 ± 0.039
0.376IleTrp: 0.376 ± 0.013
0.526IleTyr: 0.526 ± 0.015
0.0IleXaa: 0.0 ± 0.0
Lys
3.04LysAla: 3.04 ± 0.046
0.108LysCys: 0.108 ± 0.008
1.402LysAsp: 1.402 ± 0.031
1.295LysGlu: 1.295 ± 0.028
0.488LysPhe: 0.488 ± 0.014
1.956LysGly: 1.956 ± 0.038
0.45LysHis: 0.45 ± 0.016
0.872LysIle: 0.872 ± 0.021
0.933LysLys: 0.933 ± 0.029
2.096LysLeu: 2.096 ± 0.036
0.395LysMet: 0.395 ± 0.015
0.554LysAsn: 0.554 ± 0.019
1.415LysPro: 1.415 ± 0.03
0.706LysGln: 0.706 ± 0.02
1.542LysArg: 1.542 ± 0.032
1.175LysSer: 1.175 ± 0.027
1.291LysThr: 1.291 ± 0.031
1.916LysVal: 1.916 ± 0.037
0.272LysTrp: 0.272 ± 0.013
0.449LysTyr: 0.449 ± 0.014
0.0LysXaa: 0.0 ± 0.0
Leu
15.004LeuAla: 15.004 ± 0.094
0.83LeuCys: 0.83 ± 0.018
6.749LeuAsp: 6.749 ± 0.065
4.725LeuGlu: 4.725 ± 0.051
2.566LeuPhe: 2.566 ± 0.043
9.192LeuGly: 9.192 ± 0.077
2.339LeuHis: 2.339 ± 0.032
3.381LeuIle: 3.381 ± 0.056
2.073LeuLys: 2.073 ± 0.038
11.354LeuLeu: 11.354 ± 0.09
1.695LeuMet: 1.695 ± 0.032
1.755LeuAsn: 1.755 ± 0.031
6.487LeuPro: 6.487 ± 0.06
2.145LeuGln: 2.145 ± 0.034
8.544LeuArg: 8.544 ± 0.074
5.36LeuSer: 5.36 ± 0.052
6.908LeuThr: 6.908 ± 0.06
8.602LeuVal: 8.602 ± 0.071
1.289LeuTrp: 1.289 ± 0.027
1.797LeuTyr: 1.797 ± 0.028
0.0LeuXaa: 0.0 ± 0.0
Met
2.244MetAla: 2.244 ± 0.037
0.137MetCys: 0.137 ± 0.008
0.876MetAsp: 0.876 ± 0.019
0.772MetGlu: 0.772 ± 0.021
0.432MetPhe: 0.432 ± 0.014
1.284MetGly: 1.284 ± 0.027
0.348MetHis: 0.348 ± 0.013
0.653MetIle: 0.653 ± 0.02
0.456MetLys: 0.456 ± 0.014
1.66MetLeu: 1.66 ± 0.03
0.295MetMet: 0.295 ± 0.011
0.451MetAsn: 0.451 ± 0.015
1.121MetPro: 1.121 ± 0.023
0.436MetGln: 0.436 ± 0.015
1.387MetArg: 1.387 ± 0.024
1.31MetSer: 1.31 ± 0.025
1.543MetThr: 1.543 ± 0.025
1.244MetVal: 1.244 ± 0.023
0.209MetTrp: 0.209 ± 0.009
0.314MetTyr: 0.314 ± 0.012
0.0MetXaa: 0.0 ± 0.0
Asn
2.216AsnAla: 2.216 ± 0.034
0.155AsnCys: 0.155 ± 0.009
0.984AsnAsp: 0.984 ± 0.019
0.846AsnGlu: 0.846 ± 0.016
0.439AsnPhe: 0.439 ± 0.013
1.871AsnGly: 1.871 ± 0.034
0.371AsnHis: 0.371 ± 0.013
0.627AsnIle: 0.627 ± 0.015
0.425AsnLys: 0.425 ± 0.015
1.618AsnLeu: 1.618 ± 0.028
0.298AsnMet: 0.298 ± 0.011
0.406AsnAsn: 0.406 ± 0.015
1.346AsnPro: 1.346 ± 0.029
0.502AsnGln: 0.502 ± 0.014
1.317AsnArg: 1.317 ± 0.026
0.931AsnSer: 0.931 ± 0.023
1.126AsnThr: 1.126 ± 0.028
1.318AsnVal: 1.318 ± 0.027
0.279AsnTrp: 0.279 ± 0.01
0.38AsnTyr: 0.38 ± 0.013
0.0AsnXaa: 0.0 ± 0.0
Pro
8.837ProAla: 8.837 ± 0.086
0.357ProCys: 0.357 ± 0.013
4.683ProAsp: 4.683 ± 0.054
4.593ProGlu: 4.593 ± 0.052
1.537ProPhe: 1.537 ± 0.029
6.874ProGly: 6.874 ± 0.068
1.397ProHis: 1.397 ± 0.028
1.246ProIle: 1.246 ± 0.026
1.281ProLys: 1.281 ± 0.028
5.438ProLeu: 5.438 ± 0.056
1.009ProMet: 1.009 ± 0.023
0.887ProAsn: 0.887 ± 0.02
3.693ProPro: 3.693 ± 0.063
1.793ProGln: 1.793 ± 0.033
3.9ProArg: 3.9 ± 0.052
3.321ProSer: 3.321 ± 0.048
3.241ProThr: 3.241 ± 0.045
5.673ProVal: 5.673 ± 0.055
0.894ProTrp: 0.894 ± 0.025
1.417ProTyr: 1.417 ± 0.024
0.0ProXaa: 0.0 ± 0.0
Gln
3.699GlnAla: 3.699 ± 0.046
0.173GlnCys: 0.173 ± 0.01
1.426GlnAsp: 1.426 ± 0.026
1.573GlnGlu: 1.573 ± 0.028
0.633GlnPhe: 0.633 ± 0.016
2.264GlnGly: 2.264 ± 0.037
0.699GlnHis: 0.699 ± 0.018
1.044GlnIle: 1.044 ± 0.021
0.625GlnLys: 0.625 ± 0.018
3.069GlnLeu: 3.069 ± 0.039
0.493GlnMet: 0.493 ± 0.014
0.47GlnAsn: 0.47 ± 0.015
1.739GlnPro: 1.739 ± 0.041
1.304GlnGln: 1.304 ± 0.037
2.408GlnArg: 2.408 ± 0.034
1.227GlnSer: 1.227 ± 0.021
1.283GlnThr: 1.283 ± 0.031
2.294GlnVal: 2.294 ± 0.034
0.457GlnTrp: 0.457 ± 0.014
0.559GlnTyr: 0.559 ± 0.017
0.0GlnXaa: 0.0 ± 0.0
Arg
9.881ArgAla: 9.881 ± 0.079
0.609ArgCys: 0.609 ± 0.017
4.281ArgAsp: 4.281 ± 0.052
4.871ArgGlu: 4.871 ± 0.051
2.344ArgPhe: 2.344 ± 0.036
5.887ArgGly: 5.887 ± 0.057
2.03ArgHis: 2.03 ± 0.033
3.43ArgIle: 3.43 ± 0.041
1.757ArgLys: 1.757 ± 0.032
8.694ArgLeu: 8.694 ± 0.082
1.735ArgMet: 1.735 ± 0.027
1.436ArgAsn: 1.436 ± 0.026
5.03ArgPro: 5.03 ± 0.061
2.269ArgGln: 2.269 ± 0.034
7.685ArgArg: 7.685 ± 0.075
4.319ArgSer: 4.319 ± 0.044
5.762ArgThr: 5.762 ± 0.063
5.676ArgVal: 5.676 ± 0.051
1.428ArgTrp: 1.428 ± 0.027
1.786ArgTyr: 1.786 ± 0.028
0.0ArgXaa: 0.0 ± 0.0
Ser
7.022SerAla: 7.022 ± 0.059
0.431SerCys: 0.431 ± 0.017
2.724SerAsp: 2.724 ± 0.041
2.526SerGlu: 2.526 ± 0.035
1.528SerPhe: 1.528 ± 0.03
6.101SerGly: 6.101 ± 0.056
1.048SerHis: 1.048 ± 0.022
1.499SerIle: 1.499 ± 0.031
1.059SerLys: 1.059 ± 0.025
4.837SerLeu: 4.837 ± 0.051
1.036SerMet: 1.036 ± 0.019
0.869SerAsn: 0.869 ± 0.02
3.246SerPro: 3.246 ± 0.046
1.235SerGln: 1.235 ± 0.026
3.756SerArg: 3.756 ± 0.038
2.865SerSer: 2.865 ± 0.044
3.138SerThr: 3.138 ± 0.038
4.381SerVal: 4.381 ± 0.047
0.893SerTrp: 0.893 ± 0.019
1.202SerTyr: 1.202 ± 0.027
0.0SerXaa: 0.0 ± 0.0
Thr
8.984ThrAla: 8.984 ± 0.07
0.402ThrCys: 0.402 ± 0.013
3.6ThrAsp: 3.6 ± 0.043
3.376ThrGlu: 3.376 ± 0.043
1.592ThrPhe: 1.592 ± 0.026
6.878ThrGly: 6.878 ± 0.066
1.192ThrHis: 1.192 ± 0.023
1.673ThrIle: 1.673 ± 0.031
1.195ThrLys: 1.195 ± 0.029
5.682ThrLeu: 5.682 ± 0.048
0.919ThrMet: 0.919 ± 0.018
0.967ThrAsn: 0.967 ± 0.022
4.164ThrPro: 4.164 ± 0.049
1.314ThrGln: 1.314 ± 0.025
3.953ThrArg: 3.953 ± 0.043
3.182ThrSer: 3.182 ± 0.042
3.899ThrThr: 3.899 ± 0.058
6.042ThrVal: 6.042 ± 0.052
0.897ThrTrp: 0.897 ± 0.019
1.37ThrTyr: 1.37 ± 0.037
0.0ThrXaa: 0.0 ± 0.0
Val
10.33ValAla: 10.33 ± 0.075
0.744ValCys: 0.744 ± 0.021
4.763ValAsp: 4.763 ± 0.042
4.669ValGlu: 4.669 ± 0.049
2.334ValPhe: 2.334 ± 0.036
6.294ValGly: 6.294 ± 0.059
2.016ValHis: 2.016 ± 0.031
2.965ValIle: 2.965 ± 0.044
1.765ValLys: 1.765 ± 0.035
9.361ValLeu: 9.361 ± 0.061
1.408ValMet: 1.408 ± 0.025
1.605ValAsn: 1.605 ± 0.03
5.231ValPro: 5.231 ± 0.056
2.099ValGln: 2.099 ± 0.029
7.138ValArg: 7.138 ± 0.07
4.26ValSer: 4.26 ± 0.05
5.405ValThr: 5.405 ± 0.057
7.507ValVal: 7.507 ± 0.077
1.079ValTrp: 1.079 ± 0.022
1.557ValTyr: 1.557 ± 0.028
0.0ValXaa: 0.0 ± 0.0
Trp
1.68TrpAla: 1.68 ± 0.034
0.161TrpCys: 0.161 ± 0.008
0.8TrpAsp: 0.8 ± 0.02
0.771TrpGlu: 0.771 ± 0.018
0.482TrpPhe: 0.482 ± 0.015
1.026TrpGly: 1.026 ± 0.024
0.351TrpHis: 0.351 ± 0.012
0.545TrpIle: 0.545 ± 0.015
0.398TrpLys: 0.398 ± 0.014
1.731TrpLeu: 1.731 ± 0.03
0.295TrpMet: 0.295 ± 0.011
0.373TrpAsn: 0.373 ± 0.015
0.771TrpPro: 0.771 ± 0.019
0.625TrpGln: 0.625 ± 0.017
1.325TrpArg: 1.325 ± 0.024
0.951TrpSer: 0.951 ± 0.023
1.009TrpThr: 1.009 ± 0.025
0.982TrpVal: 0.982 ± 0.021
0.344TrpTrp: 0.344 ± 0.012
0.325TrpTyr: 0.325 ± 0.011
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.784TyrAla: 2.784 ± 0.038
0.17TyrCys: 0.17 ± 0.01
1.477TyrAsp: 1.477 ± 0.031
1.323TyrGlu: 1.323 ± 0.025
0.613TyrPhe: 0.613 ± 0.016
2.271TyrGly: 2.271 ± 0.036
0.375TyrHis: 0.375 ± 0.013
0.481TyrIle: 0.481 ± 0.014
0.386TyrLys: 0.386 ± 0.015
2.046TyrLeu: 2.046 ± 0.032
0.243TyrMet: 0.243 ± 0.011
0.385TyrAsn: 0.385 ± 0.014
1.045TyrPro: 1.045 ± 0.022
0.556TyrGln: 0.556 ± 0.017
1.854TyrArg: 1.854 ± 0.029
0.9TyrSer: 0.9 ± 0.02
1.177TyrThr: 1.177 ± 0.024
1.599TyrVal: 1.599 ± 0.028
0.347TyrTrp: 0.347 ± 0.013
0.402TyrTyr: 0.402 ± 0.015
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 6920 proteins (2270879 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