Amino acid dipepetide frequency for Aquamicrobium sp. LC103

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
16.844AlaAla: 16.844 ± 0.135
1.031AlaCys: 1.031 ± 0.026
6.735AlaAsp: 6.735 ± 0.162
8.062AlaGlu: 8.062 ± 0.071
4.717AlaPhe: 4.717 ± 0.059
11.177AlaGly: 11.177 ± 0.089
2.152AlaHis: 2.152 ± 0.036
6.992AlaIle: 6.992 ± 0.067
3.657AlaLys: 3.657 ± 0.059
12.713AlaLeu: 12.713 ± 0.092
3.703AlaMet: 3.703 ± 0.048
2.885AlaAsn: 2.885 ± 0.04
5.104AlaPro: 5.104 ± 0.069
3.447AlaGln: 3.447 ± 0.046
8.951AlaArg: 8.951 ± 0.078
6.677AlaSer: 6.677 ± 0.066
5.719AlaThr: 5.719 ± 0.06
8.916AlaVal: 8.916 ± 0.07
1.42AlaTrp: 1.42 ± 0.034
2.605AlaTyr: 2.605 ± 0.041
0.0AlaXaa: 0.0 ± 0.0
Cys
0.916CysAla: 0.916 ± 0.019
0.095CysCys: 0.095 ± 0.008
0.5CysAsp: 0.5 ± 0.019
0.448CysGlu: 0.448 ± 0.014
0.334CysPhe: 0.334 ± 0.014
0.9CysGly: 0.9 ± 0.026
0.213CysHis: 0.213 ± 0.011
0.388CysIle: 0.388 ± 0.015
0.158CysLys: 0.158 ± 0.01
0.765CysLeu: 0.765 ± 0.021
0.168CysMet: 0.168 ± 0.009
0.188CysAsn: 0.188 ± 0.01
0.375CysPro: 0.375 ± 0.015
0.199CysGln: 0.199 ± 0.011
0.62CysArg: 0.62 ± 0.019
0.431CysSer: 0.431 ± 0.018
0.382CysThr: 0.382 ± 0.018
0.584CysVal: 0.584 ± 0.021
0.1CysTrp: 0.1 ± 0.007
0.191CysTyr: 0.191 ± 0.01
0.0CysXaa: 0.0 ± 0.0
Asp
6.772AspAla: 6.772 ± 0.156
0.458AspCys: 0.458 ± 0.018
2.942AspAsp: 2.942 ± 0.053
3.829AspGlu: 3.829 ± 0.048
2.254AspPhe: 2.254 ± 0.035
5.168AspGly: 5.168 ± 0.065
1.183AspHis: 1.183 ± 0.03
3.152AspIle: 3.152 ± 0.041
1.54AspLys: 1.54 ± 0.032
5.557AspLeu: 5.557 ± 0.057
1.453AspMet: 1.453 ± 0.026
1.217AspAsn: 1.217 ± 0.024
3.415AspPro: 3.415 ± 0.048
1.455AspGln: 1.455 ± 0.028
4.402AspArg: 4.402 ± 0.062
1.854AspSer: 1.854 ± 0.032
2.413AspThr: 2.413 ± 0.038
4.062AspVal: 4.062 ± 0.051
0.883AspTrp: 0.883 ± 0.022
1.456AspTyr: 1.456 ± 0.029
0.0AspXaa: 0.0 ± 0.0
Glu
8.217GluAla: 8.217 ± 0.08
0.354GluCys: 0.354 ± 0.016
2.822GluAsp: 2.822 ± 0.04
3.961GluGlu: 3.961 ± 0.061
2.048GluPhe: 2.048 ± 0.033
4.639GluGly: 4.639 ± 0.052
1.235GluHis: 1.235 ± 0.021
4.042GluIle: 4.042 ± 0.052
2.563GluLys: 2.563 ± 0.041
5.793GluLeu: 5.793 ± 0.063
1.7GluMet: 1.7 ± 0.03
1.884GluAsn: 1.884 ± 0.037
2.928GluPro: 2.928 ± 0.045
1.971GluGln: 1.971 ± 0.033
5.45GluArg: 5.45 ± 0.061
2.443GluSer: 2.443 ± 0.039
3.79GluThr: 3.79 ± 0.052
3.993GluVal: 3.993 ± 0.054
0.777GluTrp: 0.777 ± 0.02
1.047GluTyr: 1.047 ± 0.025
0.0GluXaa: 0.0 ± 0.0
Phe
4.728PheAla: 4.728 ± 0.06
0.377PheCys: 0.377 ± 0.015
2.717PheAsp: 2.717 ± 0.036
2.348PheGlu: 2.348 ± 0.043
1.585PhePhe: 1.585 ± 0.03
3.877PheGly: 3.877 ± 0.048
0.825PheHis: 0.825 ± 0.022
1.858PheIle: 1.858 ± 0.031
0.937PheLys: 0.937 ± 0.023
3.657PheLeu: 3.657 ± 0.056
0.894PheMet: 0.894 ± 0.022
1.03PheAsn: 1.03 ± 0.024
1.707PhePro: 1.707 ± 0.029
1.074PheGln: 1.074 ± 0.024
2.434PheArg: 2.434 ± 0.04
2.458PheSer: 2.458 ± 0.038
1.958PheThr: 1.958 ± 0.032
3.096PheVal: 3.096 ± 0.048
0.622PheTrp: 0.622 ± 0.02
0.886PheTyr: 0.886 ± 0.026
0.0PheXaa: 0.0 ± 0.0
Gly
9.226GlyAla: 9.226 ± 0.08
0.825GlyCys: 0.825 ± 0.024
4.382GlyAsp: 4.382 ± 0.053
5.414GlyGlu: 5.414 ± 0.058
3.791GlyPhe: 3.791 ± 0.05
7.619GlyGly: 7.619 ± 0.081
1.854GlyHis: 1.854 ± 0.034
5.137GlyIle: 5.137 ± 0.057
3.28GlyLys: 3.28 ± 0.051
8.92GlyLeu: 8.92 ± 0.072
2.548GlyMet: 2.548 ± 0.034
2.285GlyAsn: 2.285 ± 0.035
3.41GlyPro: 3.41 ± 0.048
2.609GlyGln: 2.609 ± 0.036
6.465GlyArg: 6.465 ± 0.065
4.824GlySer: 4.824 ± 0.066
4.643GlyThr: 4.643 ± 0.07
6.282GlyVal: 6.282 ± 0.062
1.346GlyTrp: 1.346 ± 0.027
2.411GlyTyr: 2.411 ± 0.036
0.0GlyXaa: 0.0 ± 0.0
His
2.338HisAla: 2.338 ± 0.036
0.223HisCys: 0.223 ± 0.011
1.214HisAsp: 1.214 ± 0.025
1.155HisGlu: 1.155 ± 0.026
0.843HisPhe: 0.843 ± 0.023
2.039HisGly: 2.039 ± 0.032
0.554HisHis: 0.554 ± 0.023
0.932HisIle: 0.932 ± 0.024
0.445HisLys: 0.445 ± 0.015
1.96HisLeu: 1.96 ± 0.038
0.506HisMet: 0.506 ± 0.018
0.429HisAsn: 0.429 ± 0.015
1.286HisPro: 1.286 ± 0.029
0.565HisGln: 0.565 ± 0.018
1.415HisArg: 1.415 ± 0.028
0.967HisSer: 0.967 ± 0.026
0.786HisThr: 0.786 ± 0.018
1.57HisVal: 1.57 ± 0.031
0.31HisTrp: 0.31 ± 0.015
0.531HisTyr: 0.531 ± 0.016
0.0HisXaa: 0.0 ± 0.0
Ile
7.737IleAla: 7.737 ± 0.075
0.541IleCys: 0.541 ± 0.018
3.656IleAsp: 3.656 ± 0.041
3.817IleGlu: 3.817 ± 0.056
1.995IlePhe: 1.995 ± 0.031
5.309IleGly: 5.309 ± 0.062
0.973IleHis: 0.973 ± 0.023
2.424IleIle: 2.424 ± 0.043
1.23IleLys: 1.23 ± 0.029
4.819IleLeu: 4.819 ± 0.051
1.149IleMet: 1.149 ± 0.027
1.362IleAsn: 1.362 ± 0.03
2.413IlePro: 2.413 ± 0.033
1.145IleGln: 1.145 ± 0.026
3.512IleArg: 3.512 ± 0.044
3.197IleSer: 3.197 ± 0.042
2.531IleThr: 2.531 ± 0.039
4.91IleVal: 4.91 ± 0.059
0.595IleTrp: 0.595 ± 0.019
1.198IleTyr: 1.198 ± 0.024
0.0IleXaa: 0.0 ± 0.0
Lys
4.041LysAla: 4.041 ± 0.057
0.142LysCys: 0.142 ± 0.009
1.528LysAsp: 1.528 ± 0.028
1.7LysGlu: 1.7 ± 0.036
0.871LysPhe: 0.871 ± 0.02
2.542LysGly: 2.542 ± 0.038
0.585LysHis: 0.585 ± 0.018
1.63LysIle: 1.63 ± 0.033
1.17LysLys: 1.17 ± 0.034
3.239LysLeu: 3.239 ± 0.051
0.729LysMet: 0.729 ± 0.019
0.822LysAsn: 0.822 ± 0.019
1.968LysPro: 1.968 ± 0.041
0.917LysGln: 0.917 ± 0.022
2.306LysArg: 2.306 ± 0.035
1.838LysSer: 1.838 ± 0.037
1.761LysThr: 1.761 ± 0.032
2.392LysVal: 2.392 ± 0.039
0.36LysTrp: 0.36 ± 0.013
0.585LysTyr: 0.585 ± 0.018
0.0LysXaa: 0.0 ± 0.0
Leu
13.504LeuAla: 13.504 ± 0.097
0.788LeuCys: 0.788 ± 0.021
5.96LeuAsp: 5.96 ± 0.059
5.54LeuGlu: 5.54 ± 0.063
3.767LeuPhe: 3.767 ± 0.05
8.442LeuGly: 8.442 ± 0.074
1.828LeuHis: 1.828 ± 0.032
5.004LeuIle: 5.004 ± 0.061
3.363LeuLys: 3.363 ± 0.042
9.381LeuLeu: 9.381 ± 0.102
2.321LeuMet: 2.321 ± 0.042
2.48LeuAsn: 2.48 ± 0.041
5.315LeuPro: 5.315 ± 0.062
2.518LeuGln: 2.518 ± 0.035
6.67LeuArg: 6.67 ± 0.066
6.552LeuSer: 6.552 ± 0.054
5.128LeuThr: 5.128 ± 0.057
7.845LeuVal: 7.845 ± 0.073
1.039LeuTrp: 1.039 ± 0.028
2.007LeuTyr: 2.007 ± 0.034
0.0LeuXaa: 0.0 ± 0.0
Met
3.234MetAla: 3.234 ± 0.049
0.146MetCys: 0.146 ± 0.009
1.136MetAsp: 1.136 ± 0.026
1.342MetGlu: 1.342 ± 0.028
0.758MetPhe: 0.758 ± 0.022
1.882MetGly: 1.882 ± 0.036
0.449MetHis: 0.449 ± 0.013
1.532MetIle: 1.532 ± 0.028
1.052MetLys: 1.052 ± 0.026
2.717MetLeu: 2.717 ± 0.039
0.704MetMet: 0.704 ± 0.021
0.849MetAsn: 0.849 ± 0.023
1.56MetPro: 1.56 ± 0.028
0.824MetGln: 0.824 ± 0.019
2.074MetArg: 2.074 ± 0.03
1.749MetSer: 1.749 ± 0.034
1.857MetThr: 1.857 ± 0.031
1.805MetVal: 1.805 ± 0.031
0.227MetTrp: 0.227 ± 0.011
0.3MetTyr: 0.3 ± 0.012
0.0MetXaa: 0.0 ± 0.0
Asn
3.175AsnAla: 3.175 ± 0.045
0.23AsnCys: 0.23 ± 0.011
1.365AsnAsp: 1.365 ± 0.026
1.375AsnGlu: 1.375 ± 0.029
0.98AsnPhe: 0.98 ± 0.021
2.436AsnGly: 2.436 ± 0.037
0.483AsnHis: 0.483 ± 0.016
1.403AsnIle: 1.403 ± 0.031
0.635AsnLys: 0.635 ± 0.019
2.572AsnLeu: 2.572 ± 0.039
0.646AsnMet: 0.646 ± 0.019
0.636AsnAsn: 0.636 ± 0.017
1.872AsnPro: 1.872 ± 0.038
0.748AsnGln: 0.748 ± 0.021
1.749AsnArg: 1.749 ± 0.034
1.29AsnSer: 1.29 ± 0.03
1.2AsnThr: 1.2 ± 0.027
1.994AsnVal: 1.994 ± 0.036
0.441AsnTrp: 0.441 ± 0.015
0.705AsnTyr: 0.705 ± 0.019
0.0AsnXaa: 0.0 ± 0.0
Pro
6.045ProAla: 6.045 ± 0.065
0.281ProCys: 0.281 ± 0.013
3.411ProAsp: 3.411 ± 0.045
3.79ProGlu: 3.79 ± 0.048
2.048ProPhe: 2.048 ± 0.035
4.446ProGly: 4.446 ± 0.049
1.101ProHis: 1.101 ± 0.024
2.336ProIle: 2.336 ± 0.035
1.496ProLys: 1.496 ± 0.034
4.613ProLeu: 4.613 ± 0.054
1.142ProMet: 1.142 ± 0.026
1.3ProAsn: 1.3 ± 0.023
2.263ProPro: 2.263 ± 0.042
1.553ProGln: 1.553 ± 0.031
3.069ProArg: 3.069 ± 0.045
2.804ProSer: 2.804 ± 0.044
2.373ProThr: 2.373 ± 0.037
4.167ProVal: 4.167 ± 0.048
0.637ProTrp: 0.637 ± 0.019
1.223ProTyr: 1.223 ± 0.026
0.0ProXaa: 0.0 ± 0.0
Gln
3.712GlnAla: 3.712 ± 0.047
0.183GlnCys: 0.183 ± 0.011
1.314GlnAsp: 1.314 ± 0.029
1.554GlnGlu: 1.554 ± 0.036
1.022GlnPhe: 1.022 ± 0.025
2.181GlnGly: 2.181 ± 0.035
0.557GlnHis: 0.557 ± 0.017
1.749GlnIle: 1.749 ± 0.033
0.968GlnLys: 0.968 ± 0.023
2.614GlnLeu: 2.614 ± 0.041
0.868GlnMet: 0.868 ± 0.023
0.831GlnAsn: 0.831 ± 0.02
1.539GlnPro: 1.539 ± 0.033
1.042GlnGln: 1.042 ± 0.032
2.225GlnArg: 2.225 ± 0.035
1.635GlnSer: 1.635 ± 0.032
1.497GlnThr: 1.497 ± 0.03
1.969GlnVal: 1.969 ± 0.032
0.364GlnTrp: 0.364 ± 0.014
0.56GlnTyr: 0.56 ± 0.017
0.0GlnXaa: 0.0 ± 0.0
Arg
7.745ArgAla: 7.745 ± 0.069
0.513ArgCys: 0.513 ± 0.017
4.06ArgAsp: 4.06 ± 0.056
4.658ArgGlu: 4.658 ± 0.059
3.071ArgPhe: 3.071 ± 0.042
4.955ArgGly: 4.955 ± 0.053
1.827ArgHis: 1.827 ± 0.034
4.283ArgIle: 4.283 ± 0.056
2.527ArgLys: 2.527 ± 0.042
7.86ArgLeu: 7.86 ± 0.071
2.068ArgMet: 2.068 ± 0.035
2.039ArgAsn: 2.039 ± 0.035
3.519ArgPro: 3.519 ± 0.044
2.514ArgGln: 2.514 ± 0.042
5.945ArgArg: 5.945 ± 0.072
3.841ArgSer: 3.841 ± 0.053
3.419ArgThr: 3.419 ± 0.044
4.816ArgVal: 4.816 ± 0.057
0.977ArgTrp: 0.977 ± 0.024
1.692ArgTyr: 1.692 ± 0.031
0.0ArgXaa: 0.0 ± 0.0
Ser
6.403SerAla: 6.403 ± 0.065
0.406SerCys: 0.406 ± 0.016
2.934SerAsp: 2.934 ± 0.038
2.977SerGlu: 2.977 ± 0.046
2.417SerPhe: 2.417 ± 0.034
5.793SerGly: 5.793 ± 0.064
1.103SerHis: 1.103 ± 0.025
2.971SerIle: 2.971 ± 0.04
1.514SerLys: 1.514 ± 0.029
5.537SerLeu: 5.537 ± 0.057
1.433SerMet: 1.433 ± 0.026
1.393SerAsn: 1.393 ± 0.029
2.754SerPro: 2.754 ± 0.043
1.528SerGln: 1.528 ± 0.035
3.848SerArg: 3.848 ± 0.044
3.08SerSer: 3.08 ± 0.047
2.713SerThr: 2.713 ± 0.043
4.17SerVal: 4.17 ± 0.049
0.748SerTrp: 0.748 ± 0.022
1.317SerTyr: 1.317 ± 0.03
0.0SerXaa: 0.0 ± 0.0
Thr
5.942ThrAla: 5.942 ± 0.059
0.363ThrCys: 0.363 ± 0.014
2.581ThrAsp: 2.581 ± 0.037
2.702ThrGlu: 2.702 ± 0.037
2.042ThrPhe: 2.042 ± 0.037
5.017ThrGly: 5.017 ± 0.048
0.989ThrHis: 0.989 ± 0.023
3.07ThrIle: 3.07 ± 0.043
1.339ThrLys: 1.339 ± 0.029
5.497ThrLeu: 5.497 ± 0.062
1.332ThrMet: 1.332 ± 0.029
1.284ThrAsn: 1.284 ± 0.025
3.011ThrPro: 3.011 ± 0.048
1.229ThrGln: 1.229 ± 0.026
3.308ThrArg: 3.308 ± 0.04
2.739ThrSer: 2.739 ± 0.042
2.714ThrThr: 2.714 ± 0.044
4.283ThrVal: 4.283 ± 0.057
0.609ThrTrp: 0.609 ± 0.019
1.144ThrTyr: 1.144 ± 0.025
0.0ThrXaa: 0.0 ± 0.0
Val
9.381ValAla: 9.381 ± 0.08
0.612ValCys: 0.612 ± 0.018
4.224ValAsp: 4.224 ± 0.052
5.067ValGlu: 5.067 ± 0.054
3.049ValPhe: 3.049 ± 0.042
5.817ValGly: 5.817 ± 0.064
1.373ValHis: 1.373 ± 0.027
4.016ValIle: 4.016 ± 0.05
2.218ValLys: 2.218 ± 0.037
7.411ValLeu: 7.411 ± 0.066
1.992ValMet: 1.992 ± 0.037
2.037ValAsn: 2.037 ± 0.036
3.789ValPro: 3.789 ± 0.041
1.873ValGln: 1.873 ± 0.033
4.966ValArg: 4.966 ± 0.055
4.609ValSer: 4.609 ± 0.051
4.484ValThr: 4.484 ± 0.055
6.253ValVal: 6.253 ± 0.065
0.883ValTrp: 0.883 ± 0.026
1.539ValTyr: 1.539 ± 0.029
0.0ValXaa: 0.0 ± 0.0
Trp
1.162TrpAla: 1.162 ± 0.029
0.137TrpCys: 0.137 ± 0.008
0.569TrpAsp: 0.569 ± 0.019
0.59TrpGlu: 0.59 ± 0.02
0.514TrpPhe: 0.514 ± 0.016
0.878TrpGly: 0.878 ± 0.025
0.315TrpHis: 0.315 ± 0.013
0.678TrpIle: 0.678 ± 0.017
0.499TrpLys: 0.499 ± 0.017
1.593TrpLeu: 1.593 ± 0.032
0.375TrpMet: 0.375 ± 0.014
0.45TrpAsn: 0.45 ± 0.018
0.699TrpPro: 0.699 ± 0.02
0.525TrpGln: 0.525 ± 0.018
1.099TrpArg: 1.099 ± 0.031
0.824TrpSer: 0.824 ± 0.02
0.736TrpThr: 0.736 ± 0.019
0.748TrpVal: 0.748 ± 0.019
0.219TrpTrp: 0.219 ± 0.011
0.291TrpTyr: 0.291 ± 0.012
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.383TyrAla: 2.383 ± 0.037
0.249TyrCys: 0.249 ± 0.012
1.416TyrAsp: 1.416 ± 0.028
1.329TyrGlu: 1.329 ± 0.028
0.961TyrPhe: 0.961 ± 0.026
2.156TyrGly: 2.156 ± 0.032
0.469TyrHis: 0.469 ± 0.016
0.912TyrIle: 0.912 ± 0.024
0.538TyrLys: 0.538 ± 0.018
2.235TyrLeu: 2.235 ± 0.038
0.463TyrMet: 0.463 ± 0.016
0.531TyrAsn: 0.531 ± 0.019
1.17TyrPro: 1.17 ± 0.025
0.648TyrGln: 0.648 ± 0.019
1.821TyrArg: 1.821 ± 0.033
1.229TyrSer: 1.229 ± 0.028
1.091TyrThr: 1.091 ± 0.028
1.741TyrVal: 1.741 ± 0.027
0.347TyrTrp: 0.347 ± 0.013
0.56TyrTyr: 0.56 ± 0.02
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 5730 proteins (1809313 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