Amino acid dipepetide frequency for Streptomyces sp. AA4

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
21.484AlaAla: 21.484 ± 0.137
1.04AlaCys: 1.04 ± 0.022
8.378AlaAsp: 8.378 ± 0.058
9.536AlaGlu: 9.536 ± 0.082
3.612AlaPhe: 3.612 ± 0.039
13.112AlaGly: 13.112 ± 0.074
2.613AlaHis: 2.613 ± 0.031
4.169AlaIle: 4.169 ± 0.037
3.484AlaLys: 3.484 ± 0.045
13.705AlaLeu: 13.705 ± 0.09
2.554AlaMet: 2.554 ± 0.033
2.403AlaAsn: 2.403 ± 0.033
6.513AlaPro: 6.513 ± 0.063
3.849AlaGln: 3.849 ± 0.043
9.768AlaArg: 9.768 ± 0.084
6.184AlaSer: 6.184 ± 0.051
6.772AlaThr: 6.772 ± 0.055
11.985AlaVal: 11.985 ± 0.087
1.8AlaTrp: 1.8 ± 0.027
2.363AlaTyr: 2.363 ± 0.032
0.0AlaXaa: 0.0 ± 0.0
Cys
1.012CysAla: 1.012 ± 0.022
0.111CysCys: 0.111 ± 0.007
0.424CysAsp: 0.424 ± 0.014
0.371CysGlu: 0.371 ± 0.01
0.224CysPhe: 0.224 ± 0.009
0.949CysGly: 0.949 ± 0.019
0.178CysHis: 0.178 ± 0.009
0.161CysIle: 0.161 ± 0.009
0.122CysLys: 0.122 ± 0.007
0.723CysLeu: 0.723 ± 0.017
0.103CysMet: 0.103 ± 0.007
0.12CysAsn: 0.12 ± 0.007
0.522CysPro: 0.522 ± 0.017
0.193CysGln: 0.193 ± 0.008
0.617CysArg: 0.617 ± 0.017
0.495CysSer: 0.495 ± 0.015
0.508CysThr: 0.508 ± 0.016
0.654CysVal: 0.654 ± 0.015
0.132CysTrp: 0.132 ± 0.007
0.176CysTyr: 0.176 ± 0.007
0.0CysXaa: 0.0 ± 0.0
Asp
7.244AspAla: 7.244 ± 0.067
0.412AspCys: 0.412 ± 0.015
3.361AspAsp: 3.361 ± 0.044
3.866AspGlu: 3.866 ± 0.043
1.641AspPhe: 1.641 ± 0.027
5.836AspGly: 5.836 ± 0.052
1.29AspHis: 1.29 ± 0.023
1.659AspIle: 1.659 ± 0.026
1.147AspLys: 1.147 ± 0.022
6.491AspLeu: 6.491 ± 0.056
0.644AspMet: 0.644 ± 0.015
1.033AspAsn: 1.033 ± 0.021
4.393AspPro: 4.393 ± 0.045
1.781AspGln: 1.781 ± 0.025
4.805AspArg: 4.805 ± 0.05
2.603AspSer: 2.603 ± 0.033
2.709AspThr: 2.709 ± 0.031
5.024AspVal: 5.024 ± 0.046
0.938AspTrp: 0.938 ± 0.02
1.198AspTyr: 1.198 ± 0.022
0.0AspXaa: 0.0 ± 0.0
Glu
6.886GluAla: 6.886 ± 0.067
0.349GluCys: 0.349 ± 0.011
2.729GluAsp: 2.729 ± 0.037
3.027GluGlu: 3.027 ± 0.045
1.875GluPhe: 1.875 ± 0.025
3.643GluGly: 3.643 ± 0.039
1.619GluHis: 1.619 ± 0.025
2.489GluIle: 2.489 ± 0.029
1.541GluLys: 1.541 ± 0.03
7.084GluLeu: 7.084 ± 0.074
0.934GluMet: 0.934 ± 0.018
1.234GluAsn: 1.234 ± 0.02
3.525GluPro: 3.525 ± 0.037
2.289GluGln: 2.289 ± 0.031
5.094GluArg: 5.094 ± 0.058
2.636GluSer: 2.636 ± 0.031
3.125GluThr: 3.125 ± 0.037
4.638GluVal: 4.638 ± 0.05
0.845GluTrp: 0.845 ± 0.018
1.122GluTyr: 1.122 ± 0.022
0.0GluXaa: 0.0 ± 0.0
Phe
4.367PheAla: 4.367 ± 0.043
0.284PheCys: 0.284 ± 0.009
2.097PheAsp: 2.097 ± 0.029
1.452PheGlu: 1.452 ± 0.023
0.964PhePhe: 0.964 ± 0.022
3.456PheGly: 3.456 ± 0.041
0.598PheHis: 0.598 ± 0.015
0.641PheIle: 0.641 ± 0.016
0.459PheLys: 0.459 ± 0.015
2.822PheLeu: 2.822 ± 0.036
0.351PheMet: 0.351 ± 0.011
0.544PheAsn: 0.544 ± 0.015
1.547PhePro: 1.547 ± 0.025
0.676PheGln: 0.676 ± 0.017
1.976PheArg: 1.976 ± 0.028
1.754PheSer: 1.754 ± 0.025
1.981PheThr: 1.981 ± 0.028
2.539PheVal: 2.539 ± 0.03
0.432PheTrp: 0.432 ± 0.011
0.622PheTyr: 0.622 ± 0.015
0.0PheXaa: 0.0 ± 0.0
Gly
10.242GlyAla: 10.242 ± 0.071
0.835GlyCys: 0.835 ± 0.02
4.845GlyAsp: 4.845 ± 0.045
5.14GlyGlu: 5.14 ± 0.049
3.156GlyPhe: 3.156 ± 0.039
8.391GlyGly: 8.391 ± 0.093
2.026GlyHis: 2.026 ± 0.029
3.768GlyIle: 3.768 ± 0.034
2.836GlyLys: 2.836 ± 0.039
9.403GlyLeu: 9.403 ± 0.074
1.982GlyMet: 1.982 ± 0.026
1.979GlyAsn: 1.979 ± 0.036
5.009GlyPro: 5.009 ± 0.054
2.946GlyGln: 2.946 ± 0.042
7.019GlyArg: 7.019 ± 0.061
5.353GlySer: 5.353 ± 0.05
5.663GlyThr: 5.663 ± 0.049
7.681GlyVal: 7.681 ± 0.063
1.757GlyTrp: 1.757 ± 0.03
2.4GlyTyr: 2.4 ± 0.034
0.0GlyXaa: 0.0 ± 0.0
His
2.569HisAla: 2.569 ± 0.034
0.207HisCys: 0.207 ± 0.009
1.313HisAsp: 1.313 ± 0.022
1.188HisGlu: 1.188 ± 0.025
0.67HisPhe: 0.67 ± 0.016
2.262HisGly: 2.262 ± 0.028
0.597HisHis: 0.597 ± 0.018
0.536HisIle: 0.536 ± 0.017
0.291HisLys: 0.291 ± 0.01
2.286HisLeu: 2.286 ± 0.03
0.237HisMet: 0.237 ± 0.009
0.41HisAsn: 0.41 ± 0.014
1.693HisPro: 1.693 ± 0.026
0.668HisGln: 0.668 ± 0.016
2.047HisArg: 2.047 ± 0.031
1.05HisSer: 1.05 ± 0.019
1.072HisThr: 1.072 ± 0.02
1.726HisVal: 1.726 ± 0.021
0.365HisTrp: 0.365 ± 0.012
0.512HisTyr: 0.512 ± 0.014
0.0HisXaa: 0.0 ± 0.0
Ile
5.234IleAla: 5.234 ± 0.044
0.282IleCys: 0.282 ± 0.009
2.214IleAsp: 2.214 ± 0.03
2.079IleGlu: 2.079 ± 0.033
0.78IlePhe: 0.78 ± 0.019
3.753IleGly: 3.753 ± 0.039
0.581IleHis: 0.581 ± 0.014
0.824IleIle: 0.824 ± 0.018
0.663IleLys: 0.663 ± 0.019
2.487IleLeu: 2.487 ± 0.03
0.421IleMet: 0.421 ± 0.012
0.654IleAsn: 0.654 ± 0.016
1.924IlePro: 1.924 ± 0.026
0.737IleGln: 0.737 ± 0.018
2.322IleArg: 2.322 ± 0.029
1.906IleSer: 1.906 ± 0.029
2.137IleThr: 2.137 ± 0.028
3.039IleVal: 3.039 ± 0.038
0.369IleTrp: 0.369 ± 0.011
0.574IleTyr: 0.574 ± 0.015
0.0IleXaa: 0.0 ± 0.0
Lys
2.858LysAla: 2.858 ± 0.037
0.116LysCys: 0.116 ± 0.008
1.188LysAsp: 1.188 ± 0.025
1.082LysGlu: 1.082 ± 0.022
0.618LysPhe: 0.618 ± 0.016
1.58LysGly: 1.58 ± 0.026
0.555LysHis: 0.555 ± 0.015
1.053LysIle: 1.053 ± 0.021
0.75LysLys: 0.75 ± 0.024
2.545LysLeu: 2.545 ± 0.037
0.384LysMet: 0.384 ± 0.012
0.543LysAsn: 0.543 ± 0.018
1.651LysPro: 1.651 ± 0.033
0.821LysGln: 0.821 ± 0.018
1.615LysArg: 1.615 ± 0.027
1.14LysSer: 1.14 ± 0.023
1.407LysThr: 1.407 ± 0.025
1.886LysVal: 1.886 ± 0.031
0.305LysTrp: 0.305 ± 0.011
0.502LysTyr: 0.502 ± 0.015
0.0LysXaa: 0.0 ± 0.0
Leu
16.077LeuAla: 16.077 ± 0.099
0.795LeuCys: 0.795 ± 0.016
6.758LeuAsp: 6.758 ± 0.059
4.791LeuGlu: 4.791 ± 0.046
2.83LeuPhe: 2.83 ± 0.042
9.47LeuGly: 9.47 ± 0.069
2.184LeuHis: 2.184 ± 0.027
3.277LeuIle: 3.277 ± 0.033
1.934LeuLys: 1.934 ± 0.032
11.111LeuLeu: 11.111 ± 0.097
1.405LeuMet: 1.405 ± 0.023
1.782LeuAsn: 1.782 ± 0.029
6.606LeuPro: 6.606 ± 0.061
2.239LeuGln: 2.239 ± 0.029
8.663LeuArg: 8.663 ± 0.072
5.967LeuSer: 5.967 ± 0.05
6.224LeuThr: 6.224 ± 0.055
9.357LeuVal: 9.357 ± 0.073
1.256LeuTrp: 1.256 ± 0.022
1.697LeuTyr: 1.697 ± 0.023
0.0LeuXaa: 0.0 ± 0.0
Met
2.048MetAla: 2.048 ± 0.03
0.127MetCys: 0.127 ± 0.006
0.772MetAsp: 0.772 ± 0.018
0.595MetGlu: 0.595 ± 0.015
0.492MetPhe: 0.492 ± 0.011
1.189MetGly: 1.189 ± 0.023
0.342MetHis: 0.342 ± 0.011
0.662MetIle: 0.662 ± 0.016
0.405MetLys: 0.405 ± 0.013
1.737MetLeu: 1.737 ± 0.029
0.282MetMet: 0.282 ± 0.01
0.416MetAsn: 0.416 ± 0.011
1.156MetPro: 1.156 ± 0.025
0.435MetGln: 0.435 ± 0.012
1.4MetArg: 1.4 ± 0.023
1.281MetSer: 1.281 ± 0.022
1.558MetThr: 1.558 ± 0.027
1.231MetVal: 1.231 ± 0.025
0.192MetTrp: 0.192 ± 0.009
0.264MetTyr: 0.264 ± 0.01
0.0MetXaa: 0.0 ± 0.0
Asn
2.447AsnAla: 2.447 ± 0.03
0.161AsnCys: 0.161 ± 0.008
0.98AsnAsp: 0.98 ± 0.021
0.89AsnGlu: 0.89 ± 0.02
0.533AsnPhe: 0.533 ± 0.015
2.09AsnGly: 2.09 ± 0.036
0.437AsnHis: 0.437 ± 0.014
0.616AsnIle: 0.616 ± 0.016
0.371AsnLys: 0.371 ± 0.014
1.922AsnLeu: 1.922 ± 0.026
0.285AsnMet: 0.285 ± 0.01
0.466AsnAsn: 0.466 ± 0.017
1.647AsnPro: 1.647 ± 0.031
0.586AsnGln: 0.586 ± 0.015
1.412AsnArg: 1.412 ± 0.022
1.029AsnSer: 1.029 ± 0.026
1.123AsnThr: 1.123 ± 0.024
1.518AsnVal: 1.518 ± 0.027
0.314AsnTrp: 0.314 ± 0.012
0.453AsnTyr: 0.453 ± 0.014
0.0AsnXaa: 0.0 ± 0.0
Pro
8.622ProAla: 8.622 ± 0.069
0.358ProCys: 0.358 ± 0.012
4.567ProAsp: 4.567 ± 0.042
4.391ProGlu: 4.391 ± 0.044
1.615ProPhe: 1.615 ± 0.026
6.706ProGly: 6.706 ± 0.066
1.242ProHis: 1.242 ± 0.023
1.658ProIle: 1.658 ± 0.023
1.42ProLys: 1.42 ± 0.025
5.171ProLeu: 5.171 ± 0.048
1.044ProMet: 1.044 ± 0.022
1.125ProAsn: 1.125 ± 0.025
3.732ProPro: 3.732 ± 0.06
1.701ProGln: 1.701 ± 0.03
4.067ProArg: 4.067 ± 0.048
3.381ProSer: 3.381 ± 0.043
2.905ProThr: 2.905 ± 0.038
5.527ProVal: 5.527 ± 0.05
0.872ProTrp: 0.872 ± 0.019
1.151ProTyr: 1.151 ± 0.025
0.0ProXaa: 0.0 ± 0.0
Gln
3.747GlnAla: 3.747 ± 0.045
0.195GlnCys: 0.195 ± 0.009
1.221GlnAsp: 1.221 ± 0.022
1.253GlnGlu: 1.253 ± 0.02
0.857GlnPhe: 0.857 ± 0.019
2.056GlnGly: 2.056 ± 0.028
0.752GlnHis: 0.752 ± 0.018
1.136GlnIle: 1.136 ± 0.02
0.588GlnLys: 0.588 ± 0.019
3.57GlnLeu: 3.57 ± 0.037
0.475GlnMet: 0.475 ± 0.013
0.601GlnAsn: 0.601 ± 0.018
1.946GlnPro: 1.946 ± 0.039
1.317GlnGln: 1.317 ± 0.028
2.629GlnArg: 2.629 ± 0.036
1.341GlnSer: 1.341 ± 0.023
1.395GlnThr: 1.395 ± 0.026
2.59GlnVal: 2.59 ± 0.033
0.506GlnTrp: 0.506 ± 0.015
0.61GlnTyr: 0.61 ± 0.015
0.0GlnXaa: 0.0 ± 0.0
Arg
9.608ArgAla: 9.608 ± 0.075
0.625ArgCys: 0.625 ± 0.017
4.128ArgAsp: 4.128 ± 0.047
4.826ArgGlu: 4.826 ± 0.051
2.464ArgPhe: 2.464 ± 0.027
5.906ArgGly: 5.906 ± 0.061
1.864ArgHis: 1.864 ± 0.029
3.199ArgIle: 3.199 ± 0.033
1.967ArgLys: 1.967 ± 0.031
8.121ArgLeu: 8.121 ± 0.07
1.789ArgMet: 1.789 ± 0.028
1.519ArgAsn: 1.519 ± 0.025
4.841ArgPro: 4.841 ± 0.057
2.36ArgGln: 2.36 ± 0.027
7.761ArgArg: 7.761 ± 0.088
4.05ArgSer: 4.05 ± 0.043
4.899ArgThr: 4.899 ± 0.044
6.016ArgVal: 6.016 ± 0.048
1.367ArgTrp: 1.367 ± 0.023
1.838ArgTyr: 1.838 ± 0.03
0.0ArgXaa: 0.0 ± 0.0
Ser
7.385SerAla: 7.385 ± 0.061
0.441SerCys: 0.441 ± 0.015
2.813SerAsp: 2.813 ± 0.031
2.535SerGlu: 2.535 ± 0.033
1.664SerPhe: 1.664 ± 0.027
6.263SerGly: 6.263 ± 0.061
0.922SerHis: 0.922 ± 0.017
1.656SerIle: 1.656 ± 0.022
1.064SerLys: 1.064 ± 0.022
5.037SerLeu: 5.037 ± 0.045
1.142SerMet: 1.142 ± 0.021
0.938SerAsn: 0.938 ± 0.023
3.395SerPro: 3.395 ± 0.041
1.291SerGln: 1.291 ± 0.022
3.918SerArg: 3.918 ± 0.043
3.23SerSer: 3.23 ± 0.047
3.211SerThr: 3.211 ± 0.042
4.512SerVal: 4.512 ± 0.042
0.98SerTrp: 0.98 ± 0.018
1.197SerTyr: 1.197 ± 0.022
0.0SerXaa: 0.0 ± 0.0
Thr
8.09ThrAla: 8.09 ± 0.064
0.404ThrCys: 0.404 ± 0.011
3.145ThrAsp: 3.145 ± 0.036
3.124ThrGlu: 3.124 ± 0.037
1.645ThrPhe: 1.645 ± 0.027
6.166ThrGly: 6.166 ± 0.055
1.082ThrHis: 1.082 ± 0.02
1.869ThrIle: 1.869 ± 0.027
1.239ThrLys: 1.239 ± 0.023
5.384ThrLeu: 5.384 ± 0.045
0.95ThrMet: 0.95 ± 0.019
0.994ThrAsn: 0.994 ± 0.022
3.692ThrPro: 3.692 ± 0.043
1.357ThrGln: 1.357 ± 0.026
3.747ThrArg: 3.747 ± 0.035
3.237ThrSer: 3.237 ± 0.038
3.5ThrThr: 3.5 ± 0.039
5.97ThrVal: 5.97 ± 0.059
0.871ThrTrp: 0.871 ± 0.018
1.108ThrTyr: 1.108 ± 0.022
0.0ThrXaa: 0.0 ± 0.0
Val
11.396ValAla: 11.396 ± 0.083
0.706ValCys: 0.706 ± 0.014
5.097ValAsp: 5.097 ± 0.05
4.849ValGlu: 4.849 ± 0.052
2.649ValPhe: 2.649 ± 0.033
6.581ValGly: 6.581 ± 0.056
1.954ValHis: 1.954 ± 0.026
2.661ValIle: 2.661 ± 0.037
1.7ValLys: 1.7 ± 0.029
10.592ValLeu: 10.592 ± 0.083
1.153ValMet: 1.153 ± 0.022
1.745ValAsn: 1.745 ± 0.029
5.386ValPro: 5.386 ± 0.053
2.235ValGln: 2.235 ± 0.027
7.082ValArg: 7.082 ± 0.053
4.927ValSer: 4.927 ± 0.036
5.253ValThr: 5.253 ± 0.056
8.534ValVal: 8.534 ± 0.077
1.072ValTrp: 1.072 ± 0.019
1.477ValTyr: 1.477 ± 0.019
0.0ValXaa: 0.0 ± 0.0
Trp
1.593TrpAla: 1.593 ± 0.026
0.153TrpCys: 0.153 ± 0.007
0.741TrpAsp: 0.741 ± 0.02
0.665TrpGlu: 0.665 ± 0.015
0.545TrpPhe: 0.545 ± 0.016
1.03TrpGly: 1.03 ± 0.02
0.405TrpHis: 0.405 ± 0.012
0.556TrpIle: 0.556 ± 0.016
0.325TrpLys: 0.325 ± 0.012
1.931TrpLeu: 1.931 ± 0.026
0.277TrpMet: 0.277 ± 0.01
0.392TrpAsn: 0.392 ± 0.013
0.865TrpPro: 0.865 ± 0.019
0.625TrpGln: 0.625 ± 0.016
1.327TrpArg: 1.327 ± 0.025
0.914TrpSer: 0.914 ± 0.017
1.037TrpThr: 1.037 ± 0.024
1.011TrpVal: 1.011 ± 0.023
0.358TrpTrp: 0.358 ± 0.01
0.33TrpTyr: 0.33 ± 0.011
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.413TyrAla: 2.413 ± 0.029
0.195TyrCys: 0.195 ± 0.009
1.303TyrAsp: 1.303 ± 0.026
1.023TyrGlu: 1.023 ± 0.019
0.728TyrPhe: 0.728 ± 0.017
1.993TyrGly: 1.993 ± 0.027
0.458TyrHis: 0.458 ± 0.013
0.389TyrIle: 0.389 ± 0.013
0.29TyrLys: 0.29 ± 0.011
2.302TyrLeu: 2.302 ± 0.03
0.17TyrMet: 0.17 ± 0.009
0.385TyrAsn: 0.385 ± 0.013
1.211TyrPro: 1.211 ± 0.025
0.68TyrGln: 0.68 ± 0.016
1.883TyrArg: 1.883 ± 0.029
1.118TyrSer: 1.118 ± 0.023
1.097TyrThr: 1.097 ± 0.022
1.608TyrVal: 1.608 ± 0.026
0.348TyrTrp: 0.348 ± 0.011
0.49TyrTyr: 0.49 ± 0.013
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 8394 proteins (2700982 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