Amino acid dipepetide frequency for Photobacterium marinum

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
8.134AlaAla: 8.134 ± 0.09
1.029AlaCys: 1.029 ± 0.032
4.907AlaAsp: 4.907 ± 0.062
6.212AlaGlu: 6.212 ± 0.081
3.359AlaPhe: 3.359 ± 0.047
6.295AlaGly: 6.295 ± 0.073
1.558AlaHis: 1.558 ± 0.032
5.856AlaIle: 5.856 ± 0.067
4.631AlaLys: 4.631 ± 0.059
9.381AlaLeu: 9.381 ± 0.091
2.874AlaMet: 2.874 ± 0.043
3.363AlaAsn: 3.363 ± 0.053
2.819AlaPro: 2.819 ± 0.047
3.471AlaGln: 3.471 ± 0.058
3.931AlaArg: 3.931 ± 0.054
5.297AlaSer: 5.297 ± 0.063
4.457AlaThr: 4.457 ± 0.057
6.19AlaVal: 6.19 ± 0.066
0.931AlaTrp: 0.931 ± 0.027
2.304AlaTyr: 2.304 ± 0.04
0.0AlaXaa: 0.0 ± 0.0
Cys
0.826CysAla: 0.826 ± 0.028
0.197CysCys: 0.197 ± 0.011
0.671CysAsp: 0.671 ± 0.02
0.674CysGlu: 0.674 ± 0.021
0.512CysPhe: 0.512 ± 0.017
0.972CysGly: 0.972 ± 0.025
0.4CysHis: 0.4 ± 0.018
0.632CysIle: 0.632 ± 0.021
0.488CysLys: 0.488 ± 0.02
1.039CysLeu: 1.039 ± 0.029
0.278CysMet: 0.278 ± 0.012
0.431CysAsn: 0.431 ± 0.02
0.476CysPro: 0.476 ± 0.018
0.547CysGln: 0.547 ± 0.021
0.609CysArg: 0.609 ± 0.02
0.795CysSer: 0.795 ± 0.022
0.501CysThr: 0.501 ± 0.018
0.679CysVal: 0.679 ± 0.022
0.161CysTrp: 0.161 ± 0.012
0.404CysTyr: 0.404 ± 0.018
0.0CysXaa: 0.0 ± 0.0
Asp
4.348AspAla: 4.348 ± 0.054
0.644AspCys: 0.644 ± 0.023
3.129AspAsp: 3.129 ± 0.051
4.117AspGlu: 4.117 ± 0.063
2.467AspPhe: 2.467 ± 0.047
3.849AspGly: 3.849 ± 0.059
1.159AspHis: 1.159 ± 0.028
4.096AspIle: 4.096 ± 0.057
3.326AspLys: 3.326 ± 0.051
5.049AspLeu: 5.049 ± 0.062
1.509AspMet: 1.509 ± 0.029
2.508AspAsn: 2.508 ± 0.045
2.06AspPro: 2.06 ± 0.039
1.915AspGln: 1.915 ± 0.036
2.341AspArg: 2.341 ± 0.043
3.374AspSer: 3.374 ± 0.053
2.613AspThr: 2.613 ± 0.043
3.872AspVal: 3.872 ± 0.052
0.87AspTrp: 0.87 ± 0.022
2.09AspTyr: 2.09 ± 0.041
0.0AspXaa: 0.0 ± 0.0
Glu
5.619GluAla: 5.619 ± 0.072
0.573GluCys: 0.573 ± 0.02
2.961GluAsp: 2.961 ± 0.044
4.097GluGlu: 4.097 ± 0.063
2.363GluPhe: 2.363 ± 0.042
3.707GluGly: 3.707 ± 0.054
1.632GluHis: 1.632 ± 0.038
3.935GluIle: 3.935 ± 0.049
4.021GluLys: 4.021 ± 0.057
7.606GluLeu: 7.606 ± 0.082
1.908GluMet: 1.908 ± 0.035
2.744GluAsn: 2.744 ± 0.042
2.318GluPro: 2.318 ± 0.052
4.297GluGln: 4.297 ± 0.058
3.505GluArg: 3.505 ± 0.046
3.678GluSer: 3.678 ± 0.049
3.19GluThr: 3.19 ± 0.047
4.381GluVal: 4.381 ± 0.053
0.824GluTrp: 0.824 ± 0.025
1.82GluTyr: 1.82 ± 0.042
0.0GluXaa: 0.0 ± 0.0
Phe
3.533PheAla: 3.533 ± 0.055
0.547PheCys: 0.547 ± 0.019
2.7PheAsp: 2.7 ± 0.043
2.476PheGlu: 2.476 ± 0.039
1.707PhePhe: 1.707 ± 0.043
3.061PheGly: 3.061 ± 0.047
0.783PheHis: 0.783 ± 0.024
2.748PheIle: 2.748 ± 0.045
1.866PheLys: 1.866 ± 0.036
3.328PheLeu: 3.328 ± 0.049
1.012PheMet: 1.012 ± 0.026
2.007PheAsn: 2.007 ± 0.031
1.442PhePro: 1.442 ± 0.031
1.161PheGln: 1.161 ± 0.025
1.688PheArg: 1.688 ± 0.03
3.302PheSer: 3.302 ± 0.047
2.335PheThr: 2.335 ± 0.043
2.728PheVal: 2.728 ± 0.045
0.547PheTrp: 0.547 ± 0.019
1.316PheTyr: 1.316 ± 0.031
0.0PheXaa: 0.0 ± 0.0
Gly
5.239GlyAla: 5.239 ± 0.066
1.015GlyCys: 1.015 ± 0.029
3.673GlyAsp: 3.673 ± 0.057
4.468GlyGlu: 4.468 ± 0.062
3.251GlyPhe: 3.251 ± 0.053
4.725GlyGly: 4.725 ± 0.077
1.611GlyHis: 1.611 ± 0.032
4.839GlyIle: 4.839 ± 0.069
4.076GlyLys: 4.076 ± 0.052
6.919GlyLeu: 6.919 ± 0.079
2.18GlyMet: 2.18 ± 0.039
2.758GlyAsn: 2.758 ± 0.046
1.644GlyPro: 1.644 ± 0.035
2.865GlyGln: 2.865 ± 0.047
3.235GlyArg: 3.235 ± 0.05
4.108GlySer: 4.108 ± 0.053
3.353GlyThr: 3.353 ± 0.045
4.993GlyVal: 4.993 ± 0.069
1.007GlyTrp: 1.007 ± 0.028
2.671GlyTyr: 2.671 ± 0.048
0.0GlyXaa: 0.0 ± 0.0
His
1.567HisAla: 1.567 ± 0.034
0.364HisCys: 0.364 ± 0.018
1.143HisAsp: 1.143 ± 0.032
1.212HisGlu: 1.212 ± 0.03
1.111HisPhe: 1.111 ± 0.027
1.589HisGly: 1.589 ± 0.036
0.754HisHis: 0.754 ± 0.025
1.358HisIle: 1.358 ± 0.031
1.078HisLys: 1.078 ± 0.032
2.197HisLeu: 2.197 ± 0.042
0.536HisMet: 0.536 ± 0.016
0.97HisAsn: 0.97 ± 0.027
1.199HisPro: 1.199 ± 0.026
1.26HisGln: 1.26 ± 0.034
1.129HisArg: 1.129 ± 0.029
1.374HisSer: 1.374 ± 0.033
1.046HisThr: 1.046 ± 0.033
1.242HisVal: 1.242 ± 0.026
0.355HisTrp: 0.355 ± 0.014
0.873HisTyr: 0.873 ± 0.024
0.0HisXaa: 0.0 ± 0.0
Ile
6.222IleAla: 6.222 ± 0.076
0.743IleCys: 0.743 ± 0.021
3.942IleAsp: 3.942 ± 0.048
4.489IleGlu: 4.489 ± 0.056
2.159IlePhe: 2.159 ± 0.044
4.579IleGly: 4.579 ± 0.055
1.239IleHis: 1.239 ± 0.029
3.566IleIle: 3.566 ± 0.059
3.278IleLys: 3.278 ± 0.053
5.052IleLeu: 5.052 ± 0.067
1.409IleMet: 1.409 ± 0.029
3.086IleAsn: 3.086 ± 0.051
2.729IlePro: 2.729 ± 0.053
2.2IleGln: 2.2 ± 0.038
3.052IleArg: 3.052 ± 0.046
4.643IleSer: 4.643 ± 0.062
3.716IleThr: 3.716 ± 0.054
3.861IleVal: 3.861 ± 0.06
0.611IleTrp: 0.611 ± 0.021
1.727IleTyr: 1.727 ± 0.037
0.0IleXaa: 0.0 ± 0.0
Lys
5.003LysAla: 5.003 ± 0.052
0.36LysCys: 0.36 ± 0.014
2.697LysAsp: 2.697 ± 0.05
3.486LysGlu: 3.486 ± 0.057
1.546LysPhe: 1.546 ± 0.03
3.395LysGly: 3.395 ± 0.044
1.263LysHis: 1.263 ± 0.025
2.926LysIle: 2.926 ± 0.044
3.046LysLys: 3.046 ± 0.06
5.567LysLeu: 5.567 ± 0.068
1.501LysMet: 1.501 ± 0.036
2.117LysAsn: 2.117 ± 0.039
2.493LysPro: 2.493 ± 0.047
2.891LysGln: 2.891 ± 0.049
2.7LysArg: 2.7 ± 0.046
3.03LysSer: 3.03 ± 0.045
2.851LysThr: 2.851 ± 0.046
3.757LysVal: 3.757 ± 0.044
0.575LysTrp: 0.575 ± 0.021
1.454LysTyr: 1.454 ± 0.029
0.0LysXaa: 0.0 ± 0.0
Leu
10.041LeuAla: 10.041 ± 0.095
1.17LeuCys: 1.17 ± 0.026
5.721LeuAsp: 5.721 ± 0.074
6.22LeuGlu: 6.22 ± 0.074
4.196LeuPhe: 4.196 ± 0.057
6.895LeuGly: 6.895 ± 0.079
2.028LeuHis: 2.028 ± 0.042
6.008LeuIle: 6.008 ± 0.077
5.528LeuLys: 5.528 ± 0.072
10.683LeuLeu: 10.683 ± 0.117
2.8LeuMet: 2.8 ± 0.045
4.666LeuAsn: 4.666 ± 0.054
4.883LeuPro: 4.883 ± 0.062
3.657LeuGln: 3.657 ± 0.052
4.555LeuArg: 4.555 ± 0.054
7.643LeuSer: 7.643 ± 0.072
6.072LeuThr: 6.072 ± 0.064
6.935LeuVal: 6.935 ± 0.074
1.042LeuTrp: 1.042 ± 0.032
2.606LeuTyr: 2.606 ± 0.045
0.0LeuXaa: 0.0 ± 0.0
Met
2.88MetAla: 2.88 ± 0.047
0.226MetCys: 0.226 ± 0.014
1.32MetAsp: 1.32 ± 0.029
1.455MetGlu: 1.455 ± 0.034
0.98MetPhe: 0.98 ± 0.023
1.835MetGly: 1.835 ± 0.041
0.504MetHis: 0.504 ± 0.019
1.615MetIle: 1.615 ± 0.031
1.636MetLys: 1.636 ± 0.034
3.017MetLeu: 3.017 ± 0.047
0.98MetMet: 0.98 ± 0.027
1.172MetAsn: 1.172 ± 0.027
1.364MetPro: 1.364 ± 0.032
1.037MetGln: 1.037 ± 0.027
1.188MetArg: 1.188 ± 0.027
1.922MetSer: 1.922 ± 0.037
1.771MetThr: 1.771 ± 0.035
2.048MetVal: 2.048 ± 0.035
0.223MetTrp: 0.223 ± 0.012
0.575MetTyr: 0.575 ± 0.022
0.0MetXaa: 0.0 ± 0.0
Asn
3.318AsnAla: 3.318 ± 0.048
0.469AsnCys: 0.469 ± 0.018
2.299AsnAsp: 2.299 ± 0.04
2.535AsnGlu: 2.535 ± 0.041
1.581AsnPhe: 1.581 ± 0.031
3.061AsnGly: 3.061 ± 0.054
1.028AsnHis: 1.028 ± 0.025
2.775AsnIle: 2.775 ± 0.041
2.306AsnLys: 2.306 ± 0.049
3.929AsnLeu: 3.929 ± 0.051
1.101AsnMet: 1.101 ± 0.027
2.043AsnAsn: 2.043 ± 0.045
2.115AsnPro: 2.115 ± 0.035
2.107AsnGln: 2.107 ± 0.037
2.152AsnArg: 2.152 ± 0.037
2.519AsnSer: 2.519 ± 0.051
2.259AsnThr: 2.259 ± 0.046
2.609AsnVal: 2.609 ± 0.039
0.663AsnTrp: 0.663 ± 0.023
1.398AsnTyr: 1.398 ± 0.036
0.0AsnXaa: 0.0 ± 0.0
Pro
3.351ProAla: 3.351 ± 0.058
0.369ProCys: 0.369 ± 0.016
2.57ProAsp: 2.57 ± 0.045
3.577ProGlu: 3.577 ± 0.058
1.758ProPhe: 1.758 ± 0.035
2.533ProGly: 2.533 ± 0.045
0.854ProHis: 0.854 ± 0.025
2.162ProIle: 2.162 ± 0.041
1.862ProLys: 1.862 ± 0.035
4.203ProLeu: 4.203 ± 0.051
1.037ProMet: 1.037 ± 0.028
1.478ProAsn: 1.478 ± 0.031
1.176ProPro: 1.176 ± 0.03
1.718ProGln: 1.718 ± 0.033
1.439ProArg: 1.439 ± 0.031
2.351ProSer: 2.351 ± 0.035
2.041ProThr: 2.041 ± 0.035
3.527ProVal: 3.527 ± 0.056
0.514ProTrp: 0.514 ± 0.02
1.32ProTyr: 1.32 ± 0.029
0.0ProXaa: 0.0 ± 0.0
Gln
4.216GlnAla: 4.216 ± 0.059
0.444GlnCys: 0.444 ± 0.018
1.972GlnAsp: 1.972 ± 0.034
2.515GlnGlu: 2.515 ± 0.04
1.627GlnPhe: 1.627 ± 0.034
2.844GlnGly: 2.844 ± 0.047
1.147GlnHis: 1.147 ± 0.033
2.643GlnIle: 2.643 ± 0.044
2.118GlnLys: 2.118 ± 0.04
5.443GlnLeu: 5.443 ± 0.067
1.194GlnMet: 1.194 ± 0.029
1.651GlnAsn: 1.651 ± 0.032
1.886GlnPro: 1.886 ± 0.039
3.146GlnGln: 3.146 ± 0.063
2.337GlnArg: 2.337 ± 0.045
2.733GlnSer: 2.733 ± 0.046
2.097GlnThr: 2.097 ± 0.037
3.073GlnVal: 3.073 ± 0.051
0.656GlnTrp: 0.656 ± 0.02
1.329GlnTyr: 1.329 ± 0.031
0.0GlnXaa: 0.0 ± 0.0
Arg
3.495ArgAla: 3.495 ± 0.054
0.537ArgCys: 0.537 ± 0.02
2.599ArgAsp: 2.599 ± 0.04
3.278ArgGlu: 3.278 ± 0.054
2.214ArgPhe: 2.214 ± 0.041
2.655ArgGly: 2.655 ± 0.051
1.285ArgHis: 1.285 ± 0.029
3.086ArgIle: 3.086 ± 0.043
2.499ArgLys: 2.499 ± 0.044
5.234ArgLeu: 5.234 ± 0.066
1.284ArgMet: 1.284 ± 0.025
2.058ArgAsn: 2.058 ± 0.04
1.72ArgPro: 1.72 ± 0.031
2.502ArgGln: 2.502 ± 0.043
2.643ArgArg: 2.643 ± 0.048
2.56ArgSer: 2.56 ± 0.046
2.209ArgThr: 2.209 ± 0.04
3.129ArgVal: 3.129 ± 0.048
0.672ArgTrp: 0.672 ± 0.02
1.79ArgTyr: 1.79 ± 0.041
0.0ArgXaa: 0.0 ± 0.0
Ser
5.155SerAla: 5.155 ± 0.062
0.693SerCys: 0.693 ± 0.02
3.661SerAsp: 3.661 ± 0.052
4.16SerGlu: 4.16 ± 0.061
2.771SerPhe: 2.771 ± 0.047
5.036SerGly: 5.036 ± 0.074
1.519SerHis: 1.519 ± 0.028
3.758SerIle: 3.758 ± 0.053
3.085SerLys: 3.085 ± 0.047
6.835SerLeu: 6.835 ± 0.072
1.743SerMet: 1.743 ± 0.039
2.571SerAsn: 2.571 ± 0.05
2.474SerPro: 2.474 ± 0.04
3.056SerGln: 3.056 ± 0.048
2.994SerArg: 2.994 ± 0.046
4.183SerSer: 4.183 ± 0.061
3.166SerThr: 3.166 ± 0.052
4.545SerVal: 4.545 ± 0.058
0.867SerTrp: 0.867 ± 0.023
2.048SerTyr: 2.048 ± 0.041
0.0SerXaa: 0.0 ± 0.0
Thr
4.601ThrAla: 4.601 ± 0.06
0.51ThrCys: 0.51 ± 0.019
2.95ThrAsp: 2.95 ± 0.043
3.449ThrGlu: 3.449 ± 0.043
2.016ThrPhe: 2.016 ± 0.038
4.077ThrGly: 4.077 ± 0.056
1.112ThrHis: 1.112 ± 0.024
3.215ThrIle: 3.215 ± 0.049
2.31ThrLys: 2.31 ± 0.04
5.976ThrLeu: 5.976 ± 0.065
1.256ThrMet: 1.256 ± 0.026
2.054ThrAsn: 2.054 ± 0.04
2.554ThrPro: 2.554 ± 0.038
2.18ThrGln: 2.18 ± 0.044
2.312ThrArg: 2.312 ± 0.035
3.183ThrSer: 3.183 ± 0.052
2.799ThrThr: 2.799 ± 0.051
3.993ThrVal: 3.993 ± 0.055
0.556ThrTrp: 0.556 ± 0.019
1.459ThrTyr: 1.459 ± 0.033
0.0ThrXaa: 0.0 ± 0.0
Val
6.47ValAla: 6.47 ± 0.077
0.837ValCys: 0.837 ± 0.025
4.069ValAsp: 4.069 ± 0.053
4.573ValGlu: 4.573 ± 0.061
2.74ValPhe: 2.74 ± 0.044
4.618ValGly: 4.618 ± 0.063
1.275ValHis: 1.275 ± 0.025
4.769ValIle: 4.769 ± 0.057
3.566ValLys: 3.566 ± 0.058
6.665ValLeu: 6.665 ± 0.076
2.145ValMet: 2.145 ± 0.041
2.918ValAsn: 2.918 ± 0.047
2.633ValPro: 2.633 ± 0.046
2.2ValGln: 2.2 ± 0.04
3.105ValArg: 3.105 ± 0.049
4.882ValSer: 4.882 ± 0.065
4.128ValThr: 4.128 ± 0.054
5.313ValVal: 5.313 ± 0.067
0.704ValTrp: 0.704 ± 0.023
1.818ValTyr: 1.818 ± 0.032
0.0ValXaa: 0.0 ± 0.0
Trp
0.809TrpAla: 0.809 ± 0.025
0.146TrpCys: 0.146 ± 0.01
0.621TrpAsp: 0.621 ± 0.022
0.588TrpGlu: 0.588 ± 0.02
0.569TrpPhe: 0.569 ± 0.02
0.792TrpGly: 0.792 ± 0.021
0.373TrpHis: 0.373 ± 0.017
0.652TrpIle: 0.652 ± 0.022
0.528TrpLys: 0.528 ± 0.019
1.852TrpLeu: 1.852 ± 0.043
0.345TrpMet: 0.345 ± 0.014
0.488TrpAsn: 0.488 ± 0.018
0.494TrpPro: 0.494 ± 0.018
0.961TrpGln: 0.961 ± 0.027
0.699TrpArg: 0.699 ± 0.021
0.675TrpSer: 0.675 ± 0.02
0.462TrpThr: 0.462 ± 0.018
0.812TrpVal: 0.812 ± 0.025
0.209TrpTrp: 0.209 ± 0.012
0.398TrpTyr: 0.398 ± 0.015
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.172TyrAla: 2.172 ± 0.041
0.42TyrCys: 0.42 ± 0.019
1.729TyrAsp: 1.729 ± 0.039
1.598TyrGlu: 1.598 ± 0.032
1.361TyrPhe: 1.361 ± 0.033
2.111TyrGly: 2.111 ± 0.044
0.835TyrHis: 0.835 ± 0.024
1.664TyrIle: 1.664 ± 0.034
1.411TyrLys: 1.411 ± 0.029
3.373TyrLeu: 3.373 ± 0.057
0.656TyrMet: 0.656 ± 0.023
1.183TyrAsn: 1.183 ± 0.034
1.362TyrPro: 1.362 ± 0.03
1.898TyrGln: 1.898 ± 0.037
1.834TyrArg: 1.834 ± 0.039
2.069TyrSer: 2.069 ± 0.043
1.497TyrThr: 1.497 ± 0.033
1.743TyrVal: 1.743 ± 0.03
0.485TyrTrp: 0.485 ± 0.019
1.049TyrTyr: 1.049 ± 0.027
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 4904 proteins (1526020 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