Amino acid dipepetide frequency for Roseomonas sp. CQN31

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
26.331AlaAla: 26.331 ± 0.231
1.337AlaCys: 1.337 ± 0.032
7.138AlaAsp: 7.138 ± 0.098
9.863AlaGlu: 9.863 ± 0.104
4.737AlaPhe: 4.737 ± 0.054
14.302AlaGly: 14.302 ± 0.145
2.432AlaHis: 2.432 ± 0.044
5.918AlaIle: 5.918 ± 0.064
2.854AlaLys: 2.854 ± 0.054
17.498AlaLeu: 17.498 ± 0.17
4.272AlaMet: 4.272 ± 0.054
2.611AlaAsn: 2.611 ± 0.045
8.451AlaPro: 8.451 ± 0.092
4.66AlaGln: 4.66 ± 0.064
12.56AlaArg: 12.56 ± 0.116
5.603AlaSer: 5.603 ± 0.064
7.195AlaThr: 7.195 ± 0.086
10.402AlaVal: 10.402 ± 0.088
2.331AlaTrp: 2.331 ± 0.036
2.154AlaTyr: 2.154 ± 0.031
0.0AlaXaa: 0.0 ± 0.0
Cys
1.182CysAla: 1.182 ± 0.029
0.113CysCys: 0.113 ± 0.009
0.518CysAsp: 0.518 ± 0.018
0.358CysGlu: 0.358 ± 0.016
0.301CysPhe: 0.301 ± 0.011
0.957CysGly: 0.957 ± 0.028
0.214CysHis: 0.214 ± 0.012
0.324CysIle: 0.324 ± 0.014
0.103CysLys: 0.103 ± 0.007
0.764CysLeu: 0.764 ± 0.023
0.155CysMet: 0.155 ± 0.009
0.163CysAsn: 0.163 ± 0.01
0.468CysPro: 0.468 ± 0.015
0.171CysGln: 0.171 ± 0.009
0.719CysArg: 0.719 ± 0.021
0.356CysSer: 0.356 ± 0.014
0.419CysThr: 0.419 ± 0.018
0.581CysVal: 0.581 ± 0.017
0.145CysTrp: 0.145 ± 0.009
0.16CysTyr: 0.16 ± 0.009
0.0CysXaa: 0.0 ± 0.0
Asp
7.895AspAla: 7.895 ± 0.076
0.396AspCys: 0.396 ± 0.015
2.485AspAsp: 2.485 ± 0.074
2.512AspGlu: 2.512 ± 0.041
1.852AspPhe: 1.852 ± 0.035
5.525AspGly: 5.525 ± 0.109
1.005AspHis: 1.005 ± 0.026
2.236AspIle: 2.236 ± 0.036
0.728AspLys: 0.728 ± 0.022
5.778AspLeu: 5.778 ± 0.069
1.053AspMet: 1.053 ± 0.029
0.888AspAsn: 0.888 ± 0.029
4.036AspPro: 4.036 ± 0.052
1.235AspGln: 1.235 ± 0.033
4.355AspArg: 4.355 ± 0.055
1.955AspSer: 1.955 ± 0.056
2.507AspThr: 2.507 ± 0.087
3.684AspVal: 3.684 ± 0.064
0.984AspTrp: 0.984 ± 0.026
1.014AspTyr: 1.014 ± 0.028
0.0AspXaa: 0.0 ± 0.0
Glu
9.457GluAla: 9.457 ± 0.1
0.305GluCys: 0.305 ± 0.012
2.619GluAsp: 2.619 ± 0.051
3.189GluGlu: 3.189 ± 0.053
1.497GluPhe: 1.497 ± 0.029
5.113GluGly: 5.113 ± 0.064
1.009GluHis: 1.009 ± 0.025
2.584GluIle: 2.584 ± 0.039
1.283GluLys: 1.283 ± 0.034
4.854GluLeu: 4.854 ± 0.058
1.335GluMet: 1.335 ± 0.03
1.052GluAsn: 1.052 ± 0.026
2.855GluPro: 2.855 ± 0.045
1.806GluGln: 1.806 ± 0.03
5.033GluArg: 5.033 ± 0.068
1.948GluSer: 1.948 ± 0.03
2.889GluThr: 2.889 ± 0.043
4.057GluVal: 4.057 ± 0.047
0.696GluTrp: 0.696 ± 0.016
0.733GluTyr: 0.733 ± 0.021
0.0GluXaa: 0.0 ± 0.0
Phe
5.027PheAla: 5.027 ± 0.056
0.394PheCys: 0.394 ± 0.014
2.28PheAsp: 2.28 ± 0.037
1.711PheGlu: 1.711 ± 0.031
1.152PhePhe: 1.152 ± 0.033
3.814PheGly: 3.814 ± 0.058
0.697PheHis: 0.697 ± 0.02
1.078PheIle: 1.078 ± 0.024
0.457PheLys: 0.457 ± 0.018
3.327PheLeu: 3.327 ± 0.047
0.581PheMet: 0.581 ± 0.019
0.798PheAsn: 0.798 ± 0.019
1.649PhePro: 1.649 ± 0.035
0.826PheGln: 0.826 ± 0.022
2.601PheArg: 2.601 ± 0.036
1.585PheSer: 1.585 ± 0.031
1.822PheThr: 1.822 ± 0.043
2.663PheVal: 2.663 ± 0.042
0.535PheTrp: 0.535 ± 0.019
0.612PheTyr: 0.612 ± 0.02
0.0PheXaa: 0.0 ± 0.0
Gly
13.147GlyAla: 13.147 ± 0.149
0.884GlyCys: 0.884 ± 0.025
4.522GlyAsp: 4.522 ± 0.114
4.936GlyGlu: 4.936 ± 0.065
3.955GlyPhe: 3.955 ± 0.049
10.014GlyGly: 10.014 ± 0.254
1.884GlyHis: 1.884 ± 0.035
4.206GlyIle: 4.206 ± 0.056
2.043GlyLys: 2.043 ± 0.04
10.176GlyLeu: 10.176 ± 0.094
2.64GlyMet: 2.64 ± 0.039
2.316GlyAsn: 2.316 ± 0.082
4.563GlyPro: 4.563 ± 0.05
2.951GlyGln: 2.951 ± 0.046
7.856GlyArg: 7.856 ± 0.073
4.604GlySer: 4.604 ± 0.082
5.411GlyThr: 5.411 ± 0.076
6.962GlyVal: 6.962 ± 0.07
1.764GlyTrp: 1.764 ± 0.031
1.927GlyTyr: 1.927 ± 0.036
0.0GlyXaa: 0.0 ± 0.0
His
2.872HisAla: 2.872 ± 0.045
0.218HisCys: 0.218 ± 0.011
1.087HisAsp: 1.087 ± 0.026
0.903HisGlu: 0.903 ± 0.025
0.647HisPhe: 0.647 ± 0.018
2.077HisGly: 2.077 ± 0.041
0.501HisHis: 0.501 ± 0.018
0.668HisIle: 0.668 ± 0.021
0.293HisLys: 0.293 ± 0.015
2.096HisLeu: 2.096 ± 0.039
0.376HisMet: 0.376 ± 0.013
0.337HisAsn: 0.337 ± 0.014
1.471HisPro: 1.471 ± 0.03
0.414HisGln: 0.414 ± 0.015
1.665HisArg: 1.665 ± 0.036
0.673HisSer: 0.673 ± 0.019
0.68HisThr: 0.68 ± 0.021
1.561HisVal: 1.561 ± 0.032
0.335HisTrp: 0.335 ± 0.016
0.419HisTyr: 0.419 ± 0.014
0.0HisXaa: 0.0 ± 0.0
Ile
7.188IleAla: 7.188 ± 0.077
0.372IleCys: 0.372 ± 0.016
1.694IleAsp: 1.694 ± 0.038
2.672IleGlu: 2.672 ± 0.047
1.173IlePhe: 1.173 ± 0.03
4.639IleGly: 4.639 ± 0.063
0.746IleHis: 0.746 ± 0.021
1.245IleIle: 1.245 ± 0.031
0.602IleLys: 0.602 ± 0.021
3.763IleLeu: 3.763 ± 0.061
0.626IleMet: 0.626 ± 0.018
0.815IleAsn: 0.815 ± 0.022
2.334IlePro: 2.334 ± 0.039
0.918IleGln: 0.918 ± 0.024
3.17IleArg: 3.17 ± 0.046
1.736IleSer: 1.736 ± 0.033
2.168IleThr: 2.168 ± 0.041
3.171IleVal: 3.171 ± 0.046
0.547IleTrp: 0.547 ± 0.016
0.679IleTyr: 0.679 ± 0.022
0.0IleXaa: 0.0 ± 0.0
Lys
2.678LysAla: 2.678 ± 0.058
0.088LysCys: 0.088 ± 0.007
0.928LysAsp: 0.928 ± 0.025
0.941LysGlu: 0.941 ± 0.027
0.447LysPhe: 0.447 ± 0.017
1.715LysGly: 1.715 ± 0.038
0.385LysHis: 0.385 ± 0.017
0.736LysIle: 0.736 ± 0.022
0.5LysLys: 0.5 ± 0.021
2.093LysLeu: 2.093 ± 0.04
0.349LysMet: 0.349 ± 0.013
0.346LysAsn: 0.346 ± 0.015
1.346LysPro: 1.346 ± 0.032
0.558LysGln: 0.558 ± 0.017
1.649LysArg: 1.649 ± 0.035
0.775LysSer: 0.775 ± 0.024
0.893LysThr: 0.893 ± 0.023
1.483LysVal: 1.483 ± 0.033
0.21LysTrp: 0.21 ± 0.009
0.292LysTyr: 0.292 ± 0.014
0.0LysXaa: 0.0 ± 0.0
Leu
17.558LeuAla: 17.558 ± 0.154
0.891LeuCys: 0.891 ± 0.023
6.508LeuAsp: 6.508 ± 0.073
4.892LeuGlu: 4.892 ± 0.058
3.328LeuPhe: 3.328 ± 0.047
9.952LeuGly: 9.952 ± 0.097
2.099LeuHis: 2.099 ± 0.035
3.671LeuIle: 3.671 ± 0.052
1.998LeuLys: 1.998 ± 0.042
12.197LeuLeu: 12.197 ± 0.14
2.1LeuMet: 2.1 ± 0.034
2.039LeuAsn: 2.039 ± 0.033
7.201LeuPro: 7.201 ± 0.082
2.702LeuGln: 2.702 ± 0.046
9.554LeuArg: 9.554 ± 0.094
5.297LeuSer: 5.297 ± 0.053
5.066LeuThr: 5.066 ± 0.067
8.223LeuVal: 8.223 ± 0.08
1.307LeuTrp: 1.307 ± 0.03
1.645LeuTyr: 1.645 ± 0.03
0.0LeuXaa: 0.0 ± 0.0
Met
3.369MetAla: 3.369 ± 0.047
0.138MetCys: 0.138 ± 0.009
1.094MetAsp: 1.094 ± 0.025
1.075MetGlu: 1.075 ± 0.026
0.535MetPhe: 0.535 ± 0.017
1.801MetGly: 1.801 ± 0.034
0.424MetHis: 0.424 ± 0.014
0.932MetIle: 0.932 ± 0.025
0.522MetLys: 0.522 ± 0.018
2.672MetLeu: 2.672 ± 0.04
0.501MetMet: 0.501 ± 0.019
0.555MetAsn: 0.555 ± 0.02
1.61MetPro: 1.61 ± 0.033
0.809MetGln: 0.809 ± 0.023
2.059MetArg: 2.059 ± 0.04
1.257MetSer: 1.257 ± 0.029
1.558MetThr: 1.558 ± 0.03
1.591MetVal: 1.591 ± 0.032
0.208MetTrp: 0.208 ± 0.011
0.257MetTyr: 0.257 ± 0.012
0.0MetXaa: 0.0 ± 0.0
Asn
2.831AsnAla: 2.831 ± 0.045
0.172AsnCys: 0.172 ± 0.009
1.348AsnAsp: 1.348 ± 0.073
0.909AsnGlu: 0.909 ± 0.023
0.654AsnPhe: 0.654 ± 0.019
2.026AsnGly: 2.026 ± 0.054
0.363AsnHis: 0.363 ± 0.014
0.898AsnIle: 0.898 ± 0.025
0.303AsnLys: 0.303 ± 0.013
2.161AsnLeu: 2.161 ± 0.033
0.42AsnMet: 0.42 ± 0.016
0.536AsnAsn: 0.536 ± 0.021
1.682AsnPro: 1.682 ± 0.033
0.523AsnGln: 0.523 ± 0.019
1.64AsnArg: 1.64 ± 0.032
0.804AsnSer: 0.804 ± 0.026
1.03AsnThr: 1.03 ± 0.03
1.472AsnVal: 1.472 ± 0.03
0.33AsnTrp: 0.33 ± 0.014
0.42AsnTyr: 0.42 ± 0.017
0.0AsnXaa: 0.0 ± 0.0
Pro
9.288ProAla: 9.288 ± 0.107
0.39ProCys: 0.39 ± 0.016
3.975ProAsp: 3.975 ± 0.048
4.236ProGlu: 4.236 ± 0.057
2.13ProPhe: 2.13 ± 0.037
6.445ProGly: 6.445 ± 0.062
1.218ProHis: 1.218 ± 0.029
2.004ProIle: 2.004 ± 0.031
1.088ProLys: 1.088 ± 0.026
5.586ProLeu: 5.586 ± 0.064
1.32ProMet: 1.32 ± 0.027
1.279ProAsn: 1.279 ± 0.027
4.429ProPro: 4.429 ± 0.08
1.709ProGln: 1.709 ± 0.036
4.487ProArg: 4.487 ± 0.06
2.553ProSer: 2.553 ± 0.037
2.648ProThr: 2.648 ± 0.04
4.74ProVal: 4.74 ± 0.05
0.996ProTrp: 0.996 ± 0.025
1.095ProTyr: 1.095 ± 0.027
0.0ProXaa: 0.0 ± 0.0
Gln
4.667GlnAla: 4.667 ± 0.062
0.149GlnCys: 0.149 ± 0.01
1.465GlnAsp: 1.465 ± 0.033
1.388GlnGlu: 1.388 ± 0.032
0.767GlnPhe: 0.767 ± 0.022
2.805GlnGly: 2.805 ± 0.042
0.597GlnHis: 0.597 ± 0.018
1.189GlnIle: 1.189 ± 0.027
0.573GlnLys: 0.573 ± 0.022
2.328GlnLeu: 2.328 ± 0.042
0.639GlnMet: 0.639 ± 0.019
0.576GlnAsn: 0.576 ± 0.02
1.93GlnPro: 1.93 ± 0.034
1.131GlnGln: 1.131 ± 0.039
2.743GlnArg: 2.743 ± 0.046
1.188GlnSer: 1.188 ± 0.035
1.151GlnThr: 1.151 ± 0.028
2.453GlnVal: 2.453 ± 0.037
0.332GlnTrp: 0.332 ± 0.014
0.383GlnTyr: 0.383 ± 0.015
0.0GlnXaa: 0.0 ± 0.0
Arg
11.547ArgAla: 11.547 ± 0.106
0.671ArgCys: 0.671 ± 0.019
4.584ArgAsp: 4.584 ± 0.052
4.406ArgGlu: 4.406 ± 0.062
3.251ArgPhe: 3.251 ± 0.048
6.648ArgGly: 6.648 ± 0.066
1.979ArgHis: 1.979 ± 0.038
4.189ArgIle: 4.189 ± 0.047
1.525ArgLys: 1.525 ± 0.035
9.908ArgLeu: 9.908 ± 0.094
2.225ArgMet: 2.225 ± 0.031
1.757ArgAsn: 1.757 ± 0.034
4.831ArgPro: 4.831 ± 0.065
2.487ArgGln: 2.487 ± 0.046
8.082ArgArg: 8.082 ± 0.114
3.375ArgSer: 3.375 ± 0.05
3.427ArgThr: 3.427 ± 0.046
5.843ArgVal: 5.843 ± 0.056
1.307ArgTrp: 1.307 ± 0.028
1.436ArgTyr: 1.436 ± 0.033
0.0ArgXaa: 0.0 ± 0.0
Ser
5.834SerAla: 5.834 ± 0.067
0.359SerCys: 0.359 ± 0.015
2.087SerAsp: 2.087 ± 0.043
1.85SerGlu: 1.85 ± 0.035
1.813SerPhe: 1.813 ± 0.038
4.999SerGly: 4.999 ± 0.068
0.795SerHis: 0.795 ± 0.018
1.79SerIle: 1.79 ± 0.037
0.664SerLys: 0.664 ± 0.02
4.67SerLeu: 4.67 ± 0.055
0.925SerMet: 0.925 ± 0.02
0.895SerAsn: 0.895 ± 0.026
2.706SerPro: 2.706 ± 0.039
1.016SerGln: 1.016 ± 0.026
3.279SerArg: 3.279 ± 0.045
1.881SerSer: 1.881 ± 0.039
2.005SerThr: 2.005 ± 0.037
3.315SerVal: 3.315 ± 0.052
0.767SerTrp: 0.767 ± 0.023
0.862SerTyr: 0.862 ± 0.026
0.0SerXaa: 0.0 ± 0.0
Thr
6.401ThrAla: 6.401 ± 0.074
0.355ThrCys: 0.355 ± 0.017
2.494ThrAsp: 2.494 ± 0.056
2.52ThrGlu: 2.52 ± 0.036
1.606ThrPhe: 1.606 ± 0.036
5.287ThrGly: 5.287 ± 0.088
0.936ThrHis: 0.936 ± 0.025
2.248ThrIle: 2.248 ± 0.047
0.841ThrLys: 0.841 ± 0.027
6.259ThrLeu: 6.259 ± 0.086
1.064ThrMet: 1.064 ± 0.021
1.003ThrAsn: 1.003 ± 0.032
3.592ThrPro: 3.592 ± 0.042
1.313ThrGln: 1.313 ± 0.028
3.588ThrArg: 3.588 ± 0.046
2.021ThrSer: 2.021 ± 0.039
2.66ThrThr: 2.66 ± 0.052
4.099ThrVal: 4.099 ± 0.068
0.701ThrTrp: 0.701 ± 0.02
0.913ThrTyr: 0.913 ± 0.032
0.0ThrXaa: 0.0 ± 0.0
Val
11.442ValAla: 11.442 ± 0.108
0.595ValCys: 0.595 ± 0.018
3.469ValAsp: 3.469 ± 0.056
4.486ValGlu: 4.486 ± 0.049
2.657ValPhe: 2.657 ± 0.037
5.73ValGly: 5.73 ± 0.063
1.288ValHis: 1.288 ± 0.028
3.192ValIle: 3.192 ± 0.048
1.452ValLys: 1.452 ± 0.034
8.552ValLeu: 8.552 ± 0.077
1.717ValMet: 1.717 ± 0.033
1.799ValAsn: 1.799 ± 0.042
4.658ValPro: 4.658 ± 0.058
2.157ValGln: 2.157 ± 0.034
5.219ValArg: 5.219 ± 0.064
3.434ValSer: 3.434 ± 0.05
4.614ValThr: 4.614 ± 0.07
6.508ValVal: 6.508 ± 0.069
0.981ValTrp: 0.981 ± 0.024
1.041ValTyr: 1.041 ± 0.029
0.0ValXaa: 0.0 ± 0.0
Trp
1.566TrpAla: 1.566 ± 0.03
0.166TrpCys: 0.166 ± 0.01
0.72TrpAsp: 0.72 ± 0.021
0.636TrpGlu: 0.636 ± 0.021
0.536TrpPhe: 0.536 ± 0.018
1.131TrpGly: 1.131 ± 0.031
0.376TrpHis: 0.376 ± 0.014
0.615TrpIle: 0.615 ± 0.02
0.307TrpLys: 0.307 ± 0.013
1.904TrpLeu: 1.904 ± 0.033
0.382TrpMet: 0.382 ± 0.015
0.409TrpAsn: 0.409 ± 0.014
0.9TrpPro: 0.9 ± 0.023
0.648TrpGln: 0.648 ± 0.02
1.699TrpArg: 1.699 ± 0.032
0.76TrpSer: 0.76 ± 0.022
0.862TrpThr: 0.862 ± 0.025
0.879TrpVal: 0.879 ± 0.025
0.296TrpTrp: 0.296 ± 0.014
0.275TrpTyr: 0.275 ± 0.012
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.366TyrAla: 2.366 ± 0.037
0.176TyrCys: 0.176 ± 0.01
1.11TyrAsp: 1.11 ± 0.027
0.833TyrGlu: 0.833 ± 0.023
0.573TyrPhe: 0.573 ± 0.02
1.781TyrGly: 1.781 ± 0.036
0.343TyrHis: 0.343 ± 0.014
0.536TyrIle: 0.536 ± 0.017
0.275TyrLys: 0.275 ± 0.014
1.642TyrLeu: 1.642 ± 0.032
0.285TyrMet: 0.285 ± 0.013
0.348TyrAsn: 0.348 ± 0.015
0.906TyrPro: 0.906 ± 0.024
0.42TyrGln: 0.42 ± 0.016
1.522TyrArg: 1.522 ± 0.031
0.706TyrSer: 0.706 ± 0.021
0.898TyrThr: 0.898 ± 0.03
1.304TyrVal: 1.304 ± 0.03
0.293TyrTrp: 0.293 ± 0.014
0.354TyrTyr: 0.354 ± 0.014
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 5423 proteins (1823058 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