Amino acid dipepetide frequency for Streptomyces sp. 8K308

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
23.403AlaAla: 23.403 ± 0.193
1.035AlaCys: 1.035 ± 0.027
8.532AlaAsp: 8.532 ± 0.073
10.136AlaGlu: 10.136 ± 0.094
3.496AlaPhe: 3.496 ± 0.045
14.213AlaGly: 14.213 ± 0.1
2.855AlaHis: 2.855 ± 0.04
3.713AlaIle: 3.713 ± 0.042
1.805AlaLys: 1.805 ± 0.037
15.189AlaLeu: 15.189 ± 0.113
2.482AlaMet: 2.482 ± 0.038
2.009AlaAsn: 2.009 ± 0.034
7.111AlaPro: 7.111 ± 0.075
3.384AlaGln: 3.384 ± 0.047
11.452AlaArg: 11.452 ± 0.094
5.595AlaSer: 5.595 ± 0.054
7.648AlaThr: 7.648 ± 0.063
12.111AlaVal: 12.111 ± 0.093
1.952AlaTrp: 1.952 ± 0.032
2.513AlaTyr: 2.513 ± 0.037
0.0AlaXaa: 0.0 ± 0.0
Cys
1.073CysAla: 1.073 ± 0.021
0.106CysCys: 0.106 ± 0.007
0.444CysAsp: 0.444 ± 0.015
0.396CysGlu: 0.396 ± 0.014
0.214CysPhe: 0.214 ± 0.01
0.931CysGly: 0.931 ± 0.024
0.202CysHis: 0.202 ± 0.009
0.111CysIle: 0.111 ± 0.007
0.073CysLys: 0.073 ± 0.006
0.756CysLeu: 0.756 ± 0.02
0.095CysMet: 0.095 ± 0.006
0.111CysAsn: 0.111 ± 0.008
0.475CysPro: 0.475 ± 0.015
0.185CysGln: 0.185 ± 0.009
0.651CysArg: 0.651 ± 0.02
0.365CysSer: 0.365 ± 0.015
0.394CysThr: 0.394 ± 0.014
0.683CysVal: 0.683 ± 0.019
0.138CysTrp: 0.138 ± 0.008
0.173CysTyr: 0.173 ± 0.01
0.0CysXaa: 0.0 ± 0.0
Asp
7.853AspAla: 7.853 ± 0.07
0.432AspCys: 0.432 ± 0.016
3.643AspAsp: 3.643 ± 0.049
4.209AspGlu: 4.209 ± 0.048
1.633AspPhe: 1.633 ± 0.028
6.342AspGly: 6.342 ± 0.072
1.544AspHis: 1.544 ± 0.03
1.904AspIle: 1.904 ± 0.028
0.618AspLys: 0.618 ± 0.02
6.211AspLeu: 6.211 ± 0.059
0.779AspMet: 0.779 ± 0.02
0.89AspAsn: 0.89 ± 0.025
4.683AspPro: 4.683 ± 0.054
1.683AspGln: 1.683 ± 0.03
5.237AspArg: 5.237 ± 0.057
2.381AspSer: 2.381 ± 0.038
3.0AspThr: 3.0 ± 0.035
4.665AspVal: 4.665 ± 0.051
1.111AspTrp: 1.111 ± 0.023
1.193AspTyr: 1.193 ± 0.027
0.0AspXaa: 0.0 ± 0.0
Glu
7.897GluAla: 7.897 ± 0.083
0.352GluCys: 0.352 ± 0.012
2.866GluAsp: 2.866 ± 0.041
3.837GluGlu: 3.837 ± 0.059
1.619GluPhe: 1.619 ± 0.025
4.476GluGly: 4.476 ± 0.046
1.602GluHis: 1.602 ± 0.028
2.267GluIle: 2.267 ± 0.035
0.907GluLys: 0.907 ± 0.024
7.801GluLeu: 7.801 ± 0.075
0.875GluMet: 0.875 ± 0.019
1.025GluAsn: 1.025 ± 0.025
3.978GluPro: 3.978 ± 0.057
1.989GluGln: 1.989 ± 0.034
6.391GluArg: 6.391 ± 0.065
2.671GluSer: 2.671 ± 0.034
3.047GluThr: 3.047 ± 0.039
4.612GluVal: 4.612 ± 0.042
0.87GluTrp: 0.87 ± 0.024
1.165GluTyr: 1.165 ± 0.024
0.0GluXaa: 0.0 ± 0.0
Phe
3.746PheAla: 3.746 ± 0.045
0.228PheCys: 0.228 ± 0.01
2.002PheAsp: 2.002 ± 0.037
1.447PheGlu: 1.447 ± 0.028
0.831PhePhe: 0.831 ± 0.025
2.943PheGly: 2.943 ± 0.043
0.62PheHis: 0.62 ± 0.019
0.645PheIle: 0.645 ± 0.02
0.322PheLys: 0.322 ± 0.013
2.57PheLeu: 2.57 ± 0.037
0.356PheMet: 0.356 ± 0.011
0.542PheAsn: 0.542 ± 0.016
1.341PhePro: 1.341 ± 0.025
0.714PheGln: 0.714 ± 0.02
1.934PheArg: 1.934 ± 0.03
1.373PheSer: 1.373 ± 0.028
1.957PheThr: 1.957 ± 0.033
2.26PheVal: 2.26 ± 0.039
0.42PheTrp: 0.42 ± 0.015
0.541PheTyr: 0.541 ± 0.017
0.0PheXaa: 0.0 ± 0.0
Gly
11.253GlyAla: 11.253 ± 0.082
0.808GlyCys: 0.808 ± 0.021
5.34GlyAsp: 5.34 ± 0.064
5.696GlyGlu: 5.696 ± 0.063
2.774GlyPhe: 2.774 ± 0.047
9.189GlyGly: 9.189 ± 0.079
2.342GlyHis: 2.342 ± 0.034
3.175GlyIle: 3.175 ± 0.043
1.462GlyLys: 1.462 ± 0.028
9.634GlyLeu: 9.634 ± 0.087
1.972GlyMet: 1.972 ± 0.031
1.723GlyAsn: 1.723 ± 0.039
5.428GlyPro: 5.428 ± 0.054
2.792GlyGln: 2.792 ± 0.037
8.651GlyArg: 8.651 ± 0.072
4.875GlySer: 4.875 ± 0.058
5.784GlyThr: 5.784 ± 0.057
7.781GlyVal: 7.781 ± 0.069
1.797GlyTrp: 1.797 ± 0.034
2.35GlyTyr: 2.35 ± 0.028
0.0GlyXaa: 0.0 ± 0.0
His
2.742HisAla: 2.742 ± 0.037
0.201HisCys: 0.201 ± 0.01
1.415HisAsp: 1.415 ± 0.026
1.256HisGlu: 1.256 ± 0.028
0.641HisPhe: 0.641 ± 0.019
2.453HisGly: 2.453 ± 0.04
0.745HisHis: 0.745 ± 0.019
0.589HisIle: 0.589 ± 0.02
0.212HisLys: 0.212 ± 0.011
2.455HisLeu: 2.455 ± 0.035
0.275HisMet: 0.275 ± 0.013
0.385HisAsn: 0.385 ± 0.014
1.775HisPro: 1.775 ± 0.031
0.658HisGln: 0.658 ± 0.018
2.326HisArg: 2.326 ± 0.036
0.915HisSer: 0.915 ± 0.021
1.245HisThr: 1.245 ± 0.025
1.718HisVal: 1.718 ± 0.03
0.386HisTrp: 0.386 ± 0.013
0.485HisTyr: 0.485 ± 0.015
0.0HisXaa: 0.0 ± 0.0
Ile
4.741IleAla: 4.741 ± 0.049
0.283IleCys: 0.283 ± 0.012
2.213IleAsp: 2.213 ± 0.036
2.011IleGlu: 2.011 ± 0.035
0.682IlePhe: 0.682 ± 0.018
3.388IleGly: 3.388 ± 0.047
0.61IleHis: 0.61 ± 0.019
0.817IleIle: 0.817 ± 0.023
0.458IleLys: 0.458 ± 0.016
2.21IleLeu: 2.21 ± 0.037
0.396IleMet: 0.396 ± 0.014
0.694IleAsn: 0.694 ± 0.016
1.803IlePro: 1.803 ± 0.03
0.711IleGln: 0.711 ± 0.02
2.355IleArg: 2.355 ± 0.031
1.669IleSer: 1.669 ± 0.034
2.211IleThr: 2.211 ± 0.04
2.547IleVal: 2.547 ± 0.033
0.358IleTrp: 0.358 ± 0.014
0.529IleTyr: 0.529 ± 0.016
0.0IleXaa: 0.0 ± 0.0
Lys
1.666LysAla: 1.666 ± 0.038
0.077LysCys: 0.077 ± 0.007
0.712LysAsp: 0.712 ± 0.02
0.778LysGlu: 0.778 ± 0.024
0.263LysPhe: 0.263 ± 0.013
1.028LysGly: 1.028 ± 0.024
0.295LysHis: 0.295 ± 0.012
0.525LysIle: 0.525 ± 0.016
0.403LysLys: 0.403 ± 0.02
1.288LysLeu: 1.288 ± 0.026
0.222LysMet: 0.222 ± 0.01
0.276LysAsn: 0.276 ± 0.011
0.877LysPro: 0.877 ± 0.024
0.366LysGln: 0.366 ± 0.014
1.157LysArg: 1.157 ± 0.023
0.711LysSer: 0.711 ± 0.02
0.783LysThr: 0.783 ± 0.022
1.098LysVal: 1.098 ± 0.028
0.154LysTrp: 0.154 ± 0.01
0.251LysTyr: 0.251 ± 0.012
0.0LysXaa: 0.0 ± 0.0
Leu
16.97LeuAla: 16.97 ± 0.119
0.829LeuCys: 0.829 ± 0.022
7.045LeuAsp: 7.045 ± 0.063
4.528LeuGlu: 4.528 ± 0.059
2.611LeuPhe: 2.611 ± 0.039
9.776LeuGly: 9.776 ± 0.082
2.158LeuHis: 2.158 ± 0.031
3.242LeuIle: 3.242 ± 0.049
1.224LeuLys: 1.224 ± 0.029
12.056LeuLeu: 12.056 ± 0.127
1.498LeuMet: 1.498 ± 0.031
1.681LeuAsn: 1.681 ± 0.03
6.801LeuPro: 6.801 ± 0.061
1.897LeuGln: 1.897 ± 0.034
9.601LeuArg: 9.601 ± 0.075
5.275LeuSer: 5.275 ± 0.058
7.328LeuThr: 7.328 ± 0.06
9.168LeuVal: 9.168 ± 0.081
1.36LeuTrp: 1.36 ± 0.029
1.69LeuTyr: 1.69 ± 0.029
0.0LeuXaa: 0.0 ± 0.0
Met
2.325MetAla: 2.325 ± 0.037
0.117MetCys: 0.117 ± 0.007
0.817MetAsp: 0.817 ± 0.02
0.674MetGlu: 0.674 ± 0.018
0.446MetPhe: 0.446 ± 0.014
1.215MetGly: 1.215 ± 0.026
0.272MetHis: 0.272 ± 0.01
0.621MetIle: 0.621 ± 0.017
0.263MetLys: 0.263 ± 0.01
1.659MetLeu: 1.659 ± 0.031
0.273MetMet: 0.273 ± 0.011
0.377MetAsn: 0.377 ± 0.012
1.049MetPro: 1.049 ± 0.02
0.316MetGln: 0.316 ± 0.011
1.51MetArg: 1.51 ± 0.027
1.247MetSer: 1.247 ± 0.021
1.41MetThr: 1.41 ± 0.026
1.253MetVal: 1.253 ± 0.027
0.176MetTrp: 0.176 ± 0.009
0.291MetTyr: 0.291 ± 0.012
0.0MetXaa: 0.0 ± 0.0
Asn
2.164AsnAla: 2.164 ± 0.036
0.147AsnCys: 0.147 ± 0.009
0.981AsnAsp: 0.981 ± 0.02
0.913AsnGlu: 0.913 ± 0.02
0.465AsnPhe: 0.465 ± 0.014
1.828AsnGly: 1.828 ± 0.042
0.416AsnHis: 0.416 ± 0.013
0.588AsnIle: 0.588 ± 0.019
0.224AsnLys: 0.224 ± 0.011
1.611AsnLeu: 1.611 ± 0.029
0.27AsnMet: 0.27 ± 0.012
0.424AsnAsn: 0.424 ± 0.017
1.345AsnPro: 1.345 ± 0.025
0.527AsnGln: 0.527 ± 0.016
1.319AsnArg: 1.319 ± 0.026
0.865AsnSer: 0.865 ± 0.021
1.034AsnThr: 1.034 ± 0.024
1.38AsnVal: 1.38 ± 0.024
0.283AsnTrp: 0.283 ± 0.013
0.406AsnTyr: 0.406 ± 0.014
0.0AsnXaa: 0.0 ± 0.0
Pro
9.015ProAla: 9.015 ± 0.074
0.354ProCys: 0.354 ± 0.011
4.507ProAsp: 4.507 ± 0.056
4.853ProGlu: 4.853 ± 0.063
1.52ProPhe: 1.52 ± 0.026
6.768ProGly: 6.768 ± 0.059
1.394ProHis: 1.394 ± 0.028
1.386ProIle: 1.386 ± 0.027
0.721ProLys: 0.721 ± 0.019
5.649ProLeu: 5.649 ± 0.059
0.986ProMet: 0.986 ± 0.023
0.965ProAsn: 0.965 ± 0.024
4.043ProPro: 4.043 ± 0.059
1.454ProGln: 1.454 ± 0.028
4.5ProArg: 4.5 ± 0.047
2.959ProSer: 2.959 ± 0.044
3.463ProThr: 3.463 ± 0.039
5.369ProVal: 5.369 ± 0.051
0.979ProTrp: 0.979 ± 0.023
1.193ProTyr: 1.193 ± 0.026
0.0ProXaa: 0.0 ± 0.0
Gln
3.568GlnAla: 3.568 ± 0.044
0.142GlnCys: 0.142 ± 0.008
1.329GlnAsp: 1.329 ± 0.026
1.442GlnGlu: 1.442 ± 0.026
0.633GlnPhe: 0.633 ± 0.02
2.108GlnGly: 2.108 ± 0.038
0.596GlnHis: 0.596 ± 0.018
0.939GlnIle: 0.939 ± 0.025
0.311GlnLys: 0.311 ± 0.014
3.096GlnLeu: 3.096 ± 0.04
0.397GlnMet: 0.397 ± 0.014
0.46GlnAsn: 0.46 ± 0.016
1.723GlnPro: 1.723 ± 0.037
1.056GlnGln: 1.056 ± 0.028
2.595GlnArg: 2.595 ± 0.036
1.106GlnSer: 1.106 ± 0.027
1.186GlnThr: 1.186 ± 0.027
2.152GlnVal: 2.152 ± 0.037
0.401GlnTrp: 0.401 ± 0.014
0.519GlnTyr: 0.519 ± 0.018
0.0GlnXaa: 0.0 ± 0.0
Arg
11.501ArgAla: 11.501 ± 0.098
0.623ArgCys: 0.623 ± 0.019
4.712ArgAsp: 4.712 ± 0.047
5.406ArgGlu: 5.406 ± 0.059
2.426ArgPhe: 2.426 ± 0.037
6.482ArgGly: 6.482 ± 0.059
2.354ArgHis: 2.354 ± 0.034
3.124ArgIle: 3.124 ± 0.045
1.144ArgLys: 1.144 ± 0.03
10.206ArgLeu: 10.206 ± 0.083
1.826ArgMet: 1.826 ± 0.026
1.377ArgAsn: 1.377 ± 0.028
5.518ArgPro: 5.518 ± 0.06
2.594ArgGln: 2.594 ± 0.039
9.426ArgArg: 9.426 ± 0.094
3.948ArgSer: 3.948 ± 0.043
4.91ArgThr: 4.91 ± 0.054
6.846ArgVal: 6.846 ± 0.056
1.597ArgTrp: 1.597 ± 0.032
1.984ArgTyr: 1.984 ± 0.036
0.0ArgXaa: 0.0 ± 0.0
Ser
6.22SerAla: 6.22 ± 0.052
0.394SerCys: 0.394 ± 0.015
2.494SerAsp: 2.494 ± 0.034
2.417SerGlu: 2.417 ± 0.037
1.497SerPhe: 1.497 ± 0.028
5.517SerGly: 5.517 ± 0.054
1.012SerHis: 1.012 ± 0.024
1.321SerIle: 1.321 ± 0.026
0.617SerLys: 0.617 ± 0.019
4.682SerLeu: 4.682 ± 0.052
0.983SerMet: 0.983 ± 0.02
0.842SerAsn: 0.842 ± 0.023
3.105SerPro: 3.105 ± 0.042
1.165SerGln: 1.165 ± 0.021
3.771SerArg: 3.771 ± 0.041
2.554SerSer: 2.554 ± 0.051
2.831SerThr: 2.831 ± 0.041
3.974SerVal: 3.974 ± 0.047
0.921SerTrp: 0.921 ± 0.021
1.181SerTyr: 1.181 ± 0.024
0.0SerXaa: 0.0 ± 0.0
Thr
8.63ThrAla: 8.63 ± 0.064
0.381ThrCys: 0.381 ± 0.015
3.468ThrAsp: 3.468 ± 0.049
3.446ThrGlu: 3.446 ± 0.045
1.558ThrPhe: 1.558 ± 0.028
6.467ThrGly: 6.467 ± 0.057
1.204ThrHis: 1.204 ± 0.026
1.894ThrIle: 1.894 ± 0.037
0.663ThrLys: 0.663 ± 0.017
5.919ThrLeu: 5.919 ± 0.063
0.925ThrMet: 0.925 ± 0.024
1.019ThrAsn: 1.019 ± 0.024
3.946ThrPro: 3.946 ± 0.045
1.238ThrGln: 1.238 ± 0.024
4.276ThrArg: 4.276 ± 0.044
2.879ThrSer: 2.879 ± 0.042
3.983ThrThr: 3.983 ± 0.064
6.078ThrVal: 6.078 ± 0.062
0.923ThrTrp: 0.923 ± 0.023
1.182ThrTyr: 1.182 ± 0.033
0.0ThrXaa: 0.0 ± 0.0
Val
11.46ValAla: 11.46 ± 0.088
0.738ValCys: 0.738 ± 0.017
5.12ValAsp: 5.12 ± 0.046
4.826ValGlu: 4.826 ± 0.054
2.385ValPhe: 2.385 ± 0.039
6.636ValGly: 6.636 ± 0.063
1.83ValHis: 1.83 ± 0.031
2.907ValIle: 2.907 ± 0.04
1.08ValLys: 1.08 ± 0.025
9.58ValLeu: 9.58 ± 0.075
1.234ValMet: 1.234 ± 0.027
1.607ValAsn: 1.607 ± 0.034
5.159ValPro: 5.159 ± 0.053
1.752ValGln: 1.752 ± 0.031
7.27ValArg: 7.27 ± 0.061
4.257ValSer: 4.257 ± 0.047
5.7ValThr: 5.7 ± 0.061
7.802ValVal: 7.802 ± 0.069
1.178ValTrp: 1.178 ± 0.024
1.498ValTyr: 1.498 ± 0.025
0.0ValXaa: 0.0 ± 0.0
Trp
1.767TrpAla: 1.767 ± 0.028
0.159TrpCys: 0.159 ± 0.008
0.886TrpAsp: 0.886 ± 0.024
0.805TrpGlu: 0.805 ± 0.02
0.501TrpPhe: 0.501 ± 0.015
1.109TrpGly: 1.109 ± 0.025
0.406TrpHis: 0.406 ± 0.013
0.517TrpIle: 0.517 ± 0.016
0.222TrpLys: 0.222 ± 0.011
1.961TrpLeu: 1.961 ± 0.032
0.266TrpMet: 0.266 ± 0.011
0.389TrpAsn: 0.389 ± 0.016
0.864TrpPro: 0.864 ± 0.02
0.604TrpGln: 0.604 ± 0.019
1.595TrpArg: 1.595 ± 0.03
0.977TrpSer: 0.977 ± 0.025
1.033TrpThr: 1.033 ± 0.023
0.972TrpVal: 0.972 ± 0.026
0.393TrpTrp: 0.393 ± 0.015
0.351TrpTyr: 0.351 ± 0.014
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.639TyrAla: 2.639 ± 0.037
0.17TyrCys: 0.17 ± 0.009
1.484TyrAsp: 1.484 ± 0.045
1.17TyrGlu: 1.17 ± 0.027
0.597TyrPhe: 0.597 ± 0.016
1.958TyrGly: 1.958 ± 0.033
0.42TyrHis: 0.42 ± 0.014
0.403TyrIle: 0.403 ± 0.014
0.202TyrLys: 0.202 ± 0.011
2.205TyrLeu: 2.205 ± 0.032
0.202TyrMet: 0.202 ± 0.009
0.395TyrAsn: 0.395 ± 0.016
1.053TyrPro: 1.053 ± 0.024
0.67TyrGln: 0.67 ± 0.021
1.985TyrArg: 1.985 ± 0.03
0.876TyrSer: 0.876 ± 0.022
1.134TyrThr: 1.134 ± 0.025
1.551TyrVal: 1.551 ± 0.027
0.38TyrTrp: 0.38 ± 0.015
0.477TyrTyr: 0.477 ± 0.019
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 6672 proteins (2115711 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