Amino acid dipepetide frequency for Novosphingobium sp. AP12

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
18.425AlaAla: 18.425 ± 0.158
1.117AlaCys: 1.117 ± 0.03
7.275AlaAsp: 7.275 ± 0.071
7.442AlaGlu: 7.442 ± 0.081
4.361AlaPhe: 4.361 ± 0.053
11.491AlaGly: 11.491 ± 0.106
2.417AlaHis: 2.417 ± 0.04
6.388AlaIle: 6.388 ± 0.055
3.926AlaLys: 3.926 ± 0.065
13.876AlaLeu: 13.876 ± 0.104
3.966AlaMet: 3.966 ± 0.054
3.1AlaAsn: 3.1 ± 0.052
6.442AlaPro: 6.442 ± 0.08
4.687AlaGln: 4.687 ± 0.063
9.386AlaArg: 9.386 ± 0.093
7.007AlaSer: 7.007 ± 0.074
6.13AlaThr: 6.13 ± 0.067
8.688AlaVal: 8.688 ± 0.078
1.742AlaTrp: 1.742 ± 0.032
2.661AlaTyr: 2.661 ± 0.045
0.0AlaXaa: 0.0 ± 0.0
Cys
1.047CysAla: 1.047 ± 0.025
0.09CysCys: 0.09 ± 0.008
0.548CysAsp: 0.548 ± 0.019
0.472CysGlu: 0.472 ± 0.018
0.281CysPhe: 0.281 ± 0.014
0.907CysGly: 0.907 ± 0.026
0.198CysHis: 0.198 ± 0.013
0.351CysIle: 0.351 ± 0.015
0.182CysLys: 0.182 ± 0.011
0.709CysLeu: 0.709 ± 0.022
0.178CysMet: 0.178 ± 0.01
0.22CysAsn: 0.22 ± 0.013
0.457CysPro: 0.457 ± 0.016
0.222CysGln: 0.222 ± 0.012
0.592CysArg: 0.592 ± 0.021
0.466CysSer: 0.466 ± 0.017
0.435CysThr: 0.435 ± 0.017
0.582CysVal: 0.582 ± 0.018
0.138CysTrp: 0.138 ± 0.009
0.173CysTyr: 0.173 ± 0.01
0.0CysXaa: 0.0 ± 0.0
Asp
7.594AspAla: 7.594 ± 0.078
0.498AspCys: 0.498 ± 0.018
3.23AspAsp: 3.23 ± 0.053
3.489AspGlu: 3.489 ± 0.054
2.292AspPhe: 2.292 ± 0.036
5.52AspGly: 5.52 ± 0.068
1.321AspHis: 1.321 ± 0.027
2.738AspIle: 2.738 ± 0.046
1.776AspLys: 1.776 ± 0.038
5.824AspLeu: 5.824 ± 0.062
1.396AspMet: 1.396 ± 0.028
1.336AspAsn: 1.336 ± 0.032
3.732AspPro: 3.732 ± 0.054
1.638AspGln: 1.638 ± 0.032
4.519AspArg: 4.519 ± 0.057
2.22AspSer: 2.22 ± 0.04
2.815AspThr: 2.815 ± 0.05
4.217AspVal: 4.217 ± 0.053
1.114AspTrp: 1.114 ± 0.028
1.642AspTyr: 1.642 ± 0.032
0.0AspXaa: 0.0 ± 0.0
Glu
7.834GluAla: 7.834 ± 0.082
0.352GluCys: 0.352 ± 0.015
3.001GluAsp: 3.001 ± 0.043
2.925GluGlu: 2.925 ± 0.052
1.628GluPhe: 1.628 ± 0.03
4.792GluGly: 4.792 ± 0.064
1.267GluHis: 1.267 ± 0.03
2.853GluIle: 2.853 ± 0.04
1.881GluLys: 1.881 ± 0.036
5.041GluLeu: 5.041 ± 0.065
1.437GluMet: 1.437 ± 0.031
1.371GluAsn: 1.371 ± 0.029
2.789GluPro: 2.789 ± 0.041
2.047GluGln: 2.047 ± 0.035
4.776GluArg: 4.776 ± 0.06
2.258GluSer: 2.258 ± 0.038
3.227GluThr: 3.227 ± 0.047
3.918GluVal: 3.918 ± 0.058
0.843GluTrp: 0.843 ± 0.025
1.059GluTyr: 1.059 ± 0.03
0.0GluXaa: 0.0 ± 0.0
Phe
4.905PheAla: 4.905 ± 0.062
0.344PheCys: 0.344 ± 0.015
2.676PheAsp: 2.676 ± 0.038
2.071PheGlu: 2.071 ± 0.032
1.214PhePhe: 1.214 ± 0.028
3.614PheGly: 3.614 ± 0.051
0.746PheHis: 0.746 ± 0.02
1.31PheIle: 1.31 ± 0.031
0.896PheLys: 0.896 ± 0.022
3.05PheLeu: 3.05 ± 0.049
0.756PheMet: 0.756 ± 0.023
1.009PheAsn: 1.009 ± 0.027
1.54PhePro: 1.54 ± 0.032
0.906PheGln: 0.906 ± 0.024
2.19PheArg: 2.19 ± 0.038
2.123PheSer: 2.123 ± 0.032
2.091PheThr: 2.091 ± 0.036
2.637PheVal: 2.637 ± 0.036
0.518PheTrp: 0.518 ± 0.018
0.955PheTyr: 0.955 ± 0.025
0.0PheXaa: 0.0 ± 0.0
Gly
10.22GlyAla: 10.22 ± 0.088
0.82GlyCys: 0.82 ± 0.021
4.888GlyAsp: 4.888 ± 0.057
5.046GlyGlu: 5.046 ± 0.064
3.635GlyPhe: 3.635 ± 0.051
8.391GlyGly: 8.391 ± 0.11
1.847GlyHis: 1.847 ± 0.035
4.415GlyIle: 4.415 ± 0.057
3.419GlyLys: 3.419 ± 0.048
8.947GlyLeu: 8.947 ± 0.077
2.47GlyMet: 2.47 ± 0.045
2.365GlyAsn: 2.365 ± 0.037
3.963GlyPro: 3.963 ± 0.053
2.981GlyGln: 2.981 ± 0.044
6.392GlyArg: 6.392 ± 0.074
5.12GlySer: 5.12 ± 0.07
5.148GlyThr: 5.148 ± 0.065
6.313GlyVal: 6.313 ± 0.071
1.6GlyTrp: 1.6 ± 0.036
2.51GlyTyr: 2.51 ± 0.047
0.0GlyXaa: 0.0 ± 0.0
His
2.546HisAla: 2.546 ± 0.044
0.219HisCys: 0.219 ± 0.012
1.239HisAsp: 1.239 ± 0.027
1.062HisGlu: 1.062 ± 0.026
0.883HisPhe: 0.883 ± 0.025
1.98HisGly: 1.98 ± 0.038
0.533HisHis: 0.533 ± 0.019
0.88HisIle: 0.88 ± 0.022
0.447HisLys: 0.447 ± 0.017
1.942HisLeu: 1.942 ± 0.035
0.481HisMet: 0.481 ± 0.017
0.454HisAsn: 0.454 ± 0.016
1.346HisPro: 1.346 ± 0.031
0.528HisGln: 0.528 ± 0.018
1.451HisArg: 1.451 ± 0.033
1.01HisSer: 1.01 ± 0.024
0.798HisThr: 0.798 ± 0.022
1.489HisVal: 1.489 ± 0.029
0.343HisTrp: 0.343 ± 0.014
0.585HisTyr: 0.585 ± 0.019
0.0HisXaa: 0.0 ± 0.0
Ile
7.275IleAla: 7.275 ± 0.069
0.452IleCys: 0.452 ± 0.017
3.768IleAsp: 3.768 ± 0.053
3.503IleGlu: 3.503 ± 0.055
1.348IlePhe: 1.348 ± 0.028
4.747IleGly: 4.747 ± 0.049
0.88IleHis: 0.88 ± 0.025
1.628IleIle: 1.628 ± 0.04
1.125IleLys: 1.125 ± 0.026
3.627IleLeu: 3.627 ± 0.046
0.808IleMet: 0.808 ± 0.022
1.254IleAsn: 1.254 ± 0.031
2.253IlePro: 2.253 ± 0.04
1.064IleGln: 1.064 ± 0.026
2.981IleArg: 2.981 ± 0.043
2.574IleSer: 2.574 ± 0.041
2.525IleThr: 2.525 ± 0.04
3.803IleVal: 3.803 ± 0.051
0.557IleTrp: 0.557 ± 0.022
1.011IleTyr: 1.011 ± 0.023
0.0IleXaa: 0.0 ± 0.0
Lys
4.102LysAla: 4.102 ± 0.063
0.151LysCys: 0.151 ± 0.01
1.575LysAsp: 1.575 ± 0.034
1.21LysGlu: 1.21 ± 0.029
0.906LysPhe: 0.906 ± 0.025
2.739LysGly: 2.739 ± 0.04
0.515LysHis: 0.515 ± 0.019
1.343LysIle: 1.343 ± 0.029
0.92LysLys: 0.92 ± 0.03
3.081LysLeu: 3.081 ± 0.046
0.691LysMet: 0.691 ± 0.023
0.704LysAsn: 0.704 ± 0.02
1.932LysPro: 1.932 ± 0.044
0.904LysGln: 0.904 ± 0.026
2.093LysArg: 2.093 ± 0.035
1.608LysSer: 1.608 ± 0.029
1.656LysThr: 1.656 ± 0.033
2.427LysVal: 2.427 ± 0.044
0.41LysTrp: 0.41 ± 0.016
0.632LysTyr: 0.632 ± 0.021
0.0LysXaa: 0.0 ± 0.0
Leu
14.298LeuAla: 14.298 ± 0.108
0.873LeuCys: 0.873 ± 0.027
6.207LeuAsp: 6.207 ± 0.065
5.104LeuGlu: 5.104 ± 0.065
3.443LeuPhe: 3.443 ± 0.045
8.669LeuGly: 8.669 ± 0.077
1.942LeuHis: 1.942 ± 0.034
4.148LeuIle: 4.148 ± 0.046
2.9LeuLys: 2.9 ± 0.048
9.227LeuLeu: 9.227 ± 0.108
2.092LeuMet: 2.092 ± 0.037
2.265LeuAsn: 2.265 ± 0.043
5.566LeuPro: 5.566 ± 0.067
2.556LeuGln: 2.556 ± 0.038
6.932LeuArg: 6.932 ± 0.073
6.074LeuSer: 6.074 ± 0.061
5.575LeuThr: 5.575 ± 0.064
7.48LeuVal: 7.48 ± 0.077
1.205LeuTrp: 1.205 ± 0.032
1.957LeuTyr: 1.957 ± 0.035
0.0LeuXaa: 0.0 ± 0.0
Met
3.322MetAla: 3.322 ± 0.049
0.147MetCys: 0.147 ± 0.008
1.13MetAsp: 1.13 ± 0.025
1.098MetGlu: 1.098 ± 0.029
0.663MetPhe: 0.663 ± 0.023
1.961MetGly: 1.961 ± 0.037
0.468MetHis: 0.468 ± 0.017
1.287MetIle: 1.287 ± 0.029
0.867MetLys: 0.867 ± 0.023
2.605MetLeu: 2.605 ± 0.041
0.64MetMet: 0.64 ± 0.022
0.715MetAsn: 0.715 ± 0.02
1.544MetPro: 1.544 ± 0.03
0.754MetGln: 0.754 ± 0.019
1.808MetArg: 1.808 ± 0.037
1.476MetSer: 1.476 ± 0.031
1.812MetThr: 1.812 ± 0.038
1.671MetVal: 1.671 ± 0.033
0.212MetTrp: 0.212 ± 0.011
0.255MetTyr: 0.255 ± 0.013
0.0MetXaa: 0.0 ± 0.0
Asn
3.196AsnAla: 3.196 ± 0.049
0.258AsnCys: 0.258 ± 0.014
1.383AsnAsp: 1.383 ± 0.032
1.133AsnGlu: 1.133 ± 0.029
0.966AsnPhe: 0.966 ± 0.027
2.438AsnGly: 2.438 ± 0.05
0.47AsnHis: 0.47 ± 0.018
1.176AsnIle: 1.176 ± 0.026
0.605AsnLys: 0.605 ± 0.021
2.569AsnLeu: 2.569 ± 0.037
0.519AsnMet: 0.519 ± 0.018
0.712AsnAsn: 0.712 ± 0.024
1.774AsnPro: 1.774 ± 0.031
0.692AsnGln: 0.692 ± 0.02
1.735AsnArg: 1.735 ± 0.036
1.313AsnSer: 1.313 ± 0.032
1.204AsnThr: 1.204 ± 0.031
1.997AsnVal: 1.997 ± 0.035
0.447AsnTrp: 0.447 ± 0.016
0.749AsnTyr: 0.749 ± 0.024
0.0AsnXaa: 0.0 ± 0.0
Pro
7.108ProAla: 7.108 ± 0.083
0.336ProCys: 0.336 ± 0.015
3.633ProAsp: 3.633 ± 0.05
3.749ProGlu: 3.749 ± 0.057
1.949ProPhe: 1.949 ± 0.037
5.183ProGly: 5.183 ± 0.059
1.059ProHis: 1.059 ± 0.024
2.367ProIle: 2.367 ± 0.038
1.467ProLys: 1.467 ± 0.031
4.986ProLeu: 4.986 ± 0.055
1.269ProMet: 1.269 ± 0.03
1.23ProAsn: 1.23 ± 0.031
2.661ProPro: 2.661 ± 0.05
1.786ProGln: 1.786 ± 0.031
3.255ProArg: 3.255 ± 0.049
2.974ProSer: 2.974 ± 0.046
2.599ProThr: 2.599 ± 0.042
4.449ProVal: 4.449 ± 0.064
0.727ProTrp: 0.727 ± 0.023
1.081ProTyr: 1.081 ± 0.026
0.0ProXaa: 0.0 ± 0.0
Gln
4.056GlnAla: 4.056 ± 0.051
0.232GlnCys: 0.232 ± 0.011
1.601GlnAsp: 1.601 ± 0.028
1.295GlnGlu: 1.295 ± 0.028
1.102GlnPhe: 1.102 ± 0.025
2.618GlnGly: 2.618 ± 0.036
0.64GlnHis: 0.64 ± 0.022
1.64GlnIle: 1.64 ± 0.033
0.872GlnLys: 0.872 ± 0.026
3.037GlnLeu: 3.037 ± 0.049
0.804GlnMet: 0.804 ± 0.023
0.766GlnAsn: 0.766 ± 0.025
1.719GlnPro: 1.719 ± 0.038
1.11GlnGln: 1.11 ± 0.031
2.278GlnArg: 2.278 ± 0.038
1.696GlnSer: 1.696 ± 0.034
1.639GlnThr: 1.639 ± 0.034
2.608GlnVal: 2.608 ± 0.042
0.468GlnTrp: 0.468 ± 0.017
0.653GlnTyr: 0.653 ± 0.02
0.0GlnXaa: 0.0 ± 0.0
Arg
8.221ArgAla: 8.221 ± 0.09
0.518ArgCys: 0.518 ± 0.018
4.049ArgAsp: 4.049 ± 0.055
4.282ArgGlu: 4.282 ± 0.062
2.985ArgPhe: 2.985 ± 0.05
5.157ArgGly: 5.157 ± 0.06
1.642ArgHis: 1.642 ± 0.035
3.978ArgIle: 3.978 ± 0.054
2.225ArgLys: 2.225 ± 0.04
7.714ArgLeu: 7.714 ± 0.068
1.945ArgMet: 1.945 ± 0.036
1.787ArgAsn: 1.787 ± 0.036
3.668ArgPro: 3.668 ± 0.049
2.367ArgGln: 2.367 ± 0.045
5.756ArgArg: 5.756 ± 0.08
3.788ArgSer: 3.788 ± 0.049
3.562ArgThr: 3.562 ± 0.051
4.847ArgVal: 4.847 ± 0.053
1.223ArgTrp: 1.223 ± 0.031
1.898ArgTyr: 1.898 ± 0.031
0.0ArgXaa: 0.0 ± 0.0
Ser
6.582SerAla: 6.582 ± 0.07
0.465SerCys: 0.465 ± 0.016
3.14SerAsp: 3.14 ± 0.049
2.683SerGlu: 2.683 ± 0.043
2.129SerPhe: 2.129 ± 0.03
5.704SerGly: 5.704 ± 0.069
1.015SerHis: 1.015 ± 0.024
2.616SerIle: 2.616 ± 0.04
1.508SerLys: 1.508 ± 0.033
5.394SerLeu: 5.394 ± 0.06
1.261SerMet: 1.261 ± 0.026
1.448SerAsn: 1.448 ± 0.032
3.066SerPro: 3.066 ± 0.041
1.647SerGln: 1.647 ± 0.032
3.688SerArg: 3.688 ± 0.04
3.048SerSer: 3.048 ± 0.056
2.808SerThr: 2.808 ± 0.051
3.944SerVal: 3.944 ± 0.058
0.801SerTrp: 0.801 ± 0.024
1.47SerTyr: 1.47 ± 0.037
0.0SerXaa: 0.0 ± 0.0
Thr
6.381ThrAla: 6.381 ± 0.076
0.422ThrCys: 0.422 ± 0.017
2.908ThrAsp: 2.908 ± 0.049
2.424ThrGlu: 2.424 ± 0.041
1.953ThrPhe: 1.953 ± 0.036
5.512ThrGly: 5.512 ± 0.066
0.948ThrHis: 0.948 ± 0.025
2.786ThrIle: 2.786 ± 0.046
1.353ThrLys: 1.353 ± 0.032
5.659ThrLeu: 5.659 ± 0.06
1.229ThrMet: 1.229 ± 0.024
1.347ThrAsn: 1.347 ± 0.036
3.446ThrPro: 3.446 ± 0.049
1.579ThrGln: 1.579 ± 0.037
3.468ThrArg: 3.468 ± 0.044
3.014ThrSer: 3.014 ± 0.055
2.896ThrThr: 2.896 ± 0.05
4.357ThrVal: 4.357 ± 0.058
0.745ThrTrp: 0.745 ± 0.021
1.344ThrTyr: 1.344 ± 0.034
0.0ThrXaa: 0.0 ± 0.0
Val
9.283ValAla: 9.283 ± 0.077
0.588ValCys: 0.588 ± 0.019
4.262ValAsp: 4.262 ± 0.052
4.419ValGlu: 4.419 ± 0.049
2.357ValPhe: 2.357 ± 0.045
5.769ValGly: 5.769 ± 0.07
1.436ValHis: 1.436 ± 0.029
3.765ValIle: 3.765 ± 0.052
2.082ValLys: 2.082 ± 0.039
7.265ValLeu: 7.265 ± 0.067
1.727ValMet: 1.727 ± 0.035
2.117ValAsn: 2.117 ± 0.043
4.121ValPro: 4.121 ± 0.057
2.038ValGln: 2.038 ± 0.034
5.137ValArg: 5.137 ± 0.063
4.416ValSer: 4.416 ± 0.06
4.784ValThr: 4.784 ± 0.061
5.569ValVal: 5.569 ± 0.068
0.917ValTrp: 0.917 ± 0.025
1.427ValTyr: 1.427 ± 0.033
0.0ValXaa: 0.0 ± 0.0
Trp
1.431TrpAla: 1.431 ± 0.03
0.13TrpCys: 0.13 ± 0.009
0.831TrpAsp: 0.831 ± 0.025
0.614TrpGlu: 0.614 ± 0.019
0.569TrpPhe: 0.569 ± 0.02
1.029TrpGly: 1.029 ± 0.027
0.384TrpHis: 0.384 ± 0.018
0.702TrpIle: 0.702 ± 0.017
0.506TrpLys: 0.506 ± 0.017
1.781TrpLeu: 1.781 ± 0.035
0.36TrpMet: 0.36 ± 0.014
0.484TrpAsn: 0.484 ± 0.016
0.74TrpPro: 0.74 ± 0.02
0.617TrpGln: 0.617 ± 0.02
1.264TrpArg: 1.264 ± 0.031
0.909TrpSer: 0.909 ± 0.022
0.882TrpThr: 0.882 ± 0.026
0.841TrpVal: 0.841 ± 0.025
0.246TrpTrp: 0.246 ± 0.012
0.306TrpTyr: 0.306 ± 0.016
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.703TyrAla: 2.703 ± 0.044
0.235TyrCys: 0.235 ± 0.012
1.567TyrAsp: 1.567 ± 0.032
1.281TyrGlu: 1.281 ± 0.026
0.889TyrPhe: 0.889 ± 0.023
2.268TyrGly: 2.268 ± 0.045
0.49TyrHis: 0.49 ± 0.015
0.811TyrIle: 0.811 ± 0.026
0.642TyrLys: 0.642 ± 0.022
2.178TyrLeu: 2.178 ± 0.035
0.407TyrMet: 0.407 ± 0.018
0.652TyrAsn: 0.652 ± 0.023
1.107TyrPro: 1.107 ± 0.027
0.709TyrGln: 0.709 ± 0.021
1.912TyrArg: 1.912 ± 0.04
1.323TyrSer: 1.323 ± 0.034
1.184TyrThr: 1.184 ± 0.033
1.641TyrVal: 1.641 ± 0.031
0.367TyrTrp: 0.367 ± 0.016
0.717TyrTyr: 0.717 ± 0.023
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 5212 proteins (1657684 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