Amino acid dipepetide frequency for Putridiphycobacter roseus

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
4.47AlaAla: 4.47 ± 0.082
0.744AlaCys: 0.744 ± 0.026
3.437AlaAsp: 3.437 ± 0.055
3.806AlaGlu: 3.806 ± 0.061
3.347AlaPhe: 3.347 ± 0.061
4.479AlaGly: 4.479 ± 0.085
1.12AlaHis: 1.12 ± 0.031
5.635AlaIle: 5.635 ± 0.083
4.556AlaLys: 4.556 ± 0.077
6.167AlaLeu: 6.167 ± 0.095
1.491AlaMet: 1.491 ± 0.043
3.987AlaAsn: 3.987 ± 0.062
1.974AlaPro: 1.974 ± 0.04
2.316AlaGln: 2.316 ± 0.05
1.655AlaArg: 1.655 ± 0.048
3.891AlaSer: 3.891 ± 0.067
3.76AlaThr: 3.76 ± 0.069
3.896AlaVal: 3.896 ± 0.063
0.661AlaTrp: 0.661 ± 0.023
2.787AlaTyr: 2.787 ± 0.047
0.0AlaXaa: 0.0 ± 0.0
Cys
0.596CysAla: 0.596 ± 0.026
0.082CysCys: 0.082 ± 0.01
0.562CysAsp: 0.562 ± 0.036
0.51CysGlu: 0.51 ± 0.022
0.525CysPhe: 0.525 ± 0.022
0.636CysGly: 0.636 ± 0.022
0.211CysHis: 0.211 ± 0.014
0.678CysIle: 0.678 ± 0.024
0.52CysLys: 0.52 ± 0.023
0.745CysLeu: 0.745 ± 0.026
0.164CysMet: 0.164 ± 0.011
0.548CysAsn: 0.548 ± 0.025
0.406CysPro: 0.406 ± 0.027
0.292CysGln: 0.292 ± 0.015
0.232CysArg: 0.232 ± 0.015
0.624CysSer: 0.624 ± 0.024
0.575CysThr: 0.575 ± 0.023
0.519CysVal: 0.519 ± 0.023
0.088CysTrp: 0.088 ± 0.009
0.339CysTyr: 0.339 ± 0.023
0.0CysXaa: 0.0 ± 0.0
Asp
3.314AspAla: 3.314 ± 0.057
0.509AspCys: 0.509 ± 0.024
2.341AspAsp: 2.341 ± 0.052
3.073AspGlu: 3.073 ± 0.058
3.622AspPhe: 3.622 ± 0.058
3.702AspGly: 3.702 ± 0.101
0.864AspHis: 0.864 ± 0.027
4.277AspIle: 4.277 ± 0.068
3.913AspLys: 3.913 ± 0.069
5.621AspLeu: 5.621 ± 0.069
1.09AspMet: 1.09 ± 0.029
2.973AspAsn: 2.973 ± 0.067
1.758AspPro: 1.758 ± 0.045
1.786AspGln: 1.786 ± 0.04
1.577AspArg: 1.577 ± 0.044
3.741AspSer: 3.741 ± 0.079
3.001AspThr: 3.001 ± 0.074
3.127AspVal: 3.127 ± 0.062
0.703AspTrp: 0.703 ± 0.025
2.801AspTyr: 2.801 ± 0.048
0.0AspXaa: 0.0 ± 0.0
Glu
3.854GluAla: 3.854 ± 0.087
0.342GluCys: 0.342 ± 0.018
3.097GluAsp: 3.097 ± 0.056
4.08GluGlu: 4.08 ± 0.087
2.885GluPhe: 2.885 ± 0.06
3.398GluGly: 3.398 ± 0.06
0.93GluHis: 0.93 ± 0.027
5.613GluIle: 5.613 ± 0.069
5.853GluLys: 5.853 ± 0.09
5.688GluLeu: 5.688 ± 0.081
1.666GluMet: 1.666 ± 0.041
4.6GluAsn: 4.6 ± 0.063
1.344GluPro: 1.344 ± 0.036
1.967GluGln: 1.967 ± 0.043
2.001GluArg: 2.001 ± 0.045
3.369GluSer: 3.369 ± 0.053
3.193GluThr: 3.193 ± 0.054
3.919GluVal: 3.919 ± 0.062
0.637GluTrp: 0.637 ± 0.022
2.12GluTyr: 2.12 ± 0.045
0.0GluXaa: 0.0 ± 0.0
Phe
2.801PheAla: 2.801 ± 0.057
0.478PheCys: 0.478 ± 0.019
3.308PheAsp: 3.308 ± 0.052
3.593PheGlu: 3.593 ± 0.061
2.702PhePhe: 2.702 ± 0.064
3.613PheGly: 3.613 ± 0.063
0.88PheHis: 0.88 ± 0.025
4.438PheIle: 4.438 ± 0.079
3.904PheLys: 3.904 ± 0.064
4.706PheLeu: 4.706 ± 0.074
1.111PheMet: 1.111 ± 0.032
3.632PheAsn: 3.632 ± 0.058
1.642PhePro: 1.642 ± 0.033
1.776PheGln: 1.776 ± 0.041
1.378PheArg: 1.378 ± 0.035
4.04PheSer: 4.04 ± 0.057
3.413PheThr: 3.413 ± 0.062
2.999PheVal: 2.999 ± 0.055
0.566PheTrp: 0.566 ± 0.027
2.418PheTyr: 2.418 ± 0.056
0.0PheXaa: 0.0 ± 0.0
Gly
4.119GlyAla: 4.119 ± 0.063
0.825GlyCys: 0.825 ± 0.046
3.486GlyAsp: 3.486 ± 0.066
3.683GlyGlu: 3.683 ± 0.052
3.498GlyPhe: 3.498 ± 0.061
4.589GlyGly: 4.589 ± 0.094
1.12GlyHis: 1.12 ± 0.032
5.59GlyIle: 5.59 ± 0.07
4.582GlyLys: 4.582 ± 0.079
6.058GlyLeu: 6.058 ± 0.082
1.639GlyMet: 1.639 ± 0.045
3.996GlyAsn: 3.996 ± 0.091
1.461GlyPro: 1.461 ± 0.042
2.09GlyGln: 2.09 ± 0.042
1.807GlyArg: 1.807 ± 0.041
4.012GlySer: 4.012 ± 0.081
4.219GlyThr: 4.219 ± 0.1
4.455GlyVal: 4.455 ± 0.073
0.71GlyTrp: 0.71 ± 0.029
2.712GlyTyr: 2.712 ± 0.046
0.0GlyXaa: 0.0 ± 0.0
His
1.103HisAla: 1.103 ± 0.03
0.2HisCys: 0.2 ± 0.013
0.814HisAsp: 0.814 ± 0.024
0.97HisGlu: 0.97 ± 0.028
1.19HisPhe: 1.19 ± 0.03
1.04HisGly: 1.04 ± 0.032
0.521HisHis: 0.521 ± 0.022
1.364HisIle: 1.364 ± 0.037
1.13HisLys: 1.13 ± 0.03
1.871HisLeu: 1.871 ± 0.042
0.303HisMet: 0.303 ± 0.015
0.904HisAsn: 0.904 ± 0.028
0.931HisPro: 0.931 ± 0.03
0.852HisGln: 0.852 ± 0.03
0.467HisArg: 0.467 ± 0.021
1.096HisSer: 1.096 ± 0.03
1.043HisThr: 1.043 ± 0.032
0.993HisVal: 0.993 ± 0.031
0.232HisTrp: 0.232 ± 0.014
0.869HisTyr: 0.869 ± 0.031
0.0HisXaa: 0.0 ± 0.0
Ile
5.749IleAla: 5.749 ± 0.081
0.77IleCys: 0.77 ± 0.028
5.115IleAsp: 5.115 ± 0.068
5.583IleGlu: 5.583 ± 0.084
3.83IlePhe: 3.83 ± 0.061
5.59IleGly: 5.59 ± 0.078
1.679IleHis: 1.679 ± 0.039
6.632IleIle: 6.632 ± 0.087
6.029IleLys: 6.029 ± 0.085
7.273IleLeu: 7.273 ± 0.098
1.463IleMet: 1.463 ± 0.041
5.232IleAsn: 5.232 ± 0.073
3.254IlePro: 3.254 ± 0.054
3.277IleGln: 3.277 ± 0.059
2.351IleArg: 2.351 ± 0.048
5.848IleSer: 5.848 ± 0.08
4.878IleThr: 4.878 ± 0.074
4.904IleVal: 4.904 ± 0.072
0.765IleTrp: 0.765 ± 0.024
3.229IleTyr: 3.229 ± 0.067
0.0IleXaa: 0.0 ± 0.0
Lys
4.871LysAla: 4.871 ± 0.077
0.372LysCys: 0.372 ± 0.017
4.008LysAsp: 4.008 ± 0.065
5.365LysGlu: 5.365 ± 0.085
2.943LysPhe: 2.943 ± 0.048
4.346LysGly: 4.346 ± 0.074
1.341LysHis: 1.341 ± 0.032
6.543LysIle: 6.543 ± 0.089
6.566LysLys: 6.566 ± 0.101
6.631LysLeu: 6.631 ± 0.094
2.128LysMet: 2.128 ± 0.046
5.21LysAsn: 5.21 ± 0.089
2.245LysPro: 2.245 ± 0.05
2.579LysGln: 2.579 ± 0.053
2.466LysArg: 2.466 ± 0.058
4.679LysSer: 4.679 ± 0.064
4.485LysThr: 4.485 ± 0.065
4.668LysVal: 4.668 ± 0.071
0.758LysTrp: 0.758 ± 0.026
3.102LysTyr: 3.102 ± 0.054
0.0LysXaa: 0.0 ± 0.0
Leu
5.778LeuAla: 5.778 ± 0.083
0.741LeuCys: 0.741 ± 0.032
4.9LeuAsp: 4.9 ± 0.068
5.393LeuGlu: 5.393 ± 0.076
5.219LeuPhe: 5.219 ± 0.085
5.58LeuGly: 5.58 ± 0.075
1.491LeuHis: 1.491 ± 0.033
7.523LeuIle: 7.523 ± 0.101
7.843LeuLys: 7.843 ± 0.091
8.846LeuLeu: 8.846 ± 0.128
2.175LeuMet: 2.175 ± 0.049
6.674LeuAsn: 6.674 ± 0.092
3.411LeuPro: 3.411 ± 0.062
2.709LeuGln: 2.709 ± 0.044
2.67LeuArg: 2.67 ± 0.06
7.121LeuSer: 7.121 ± 0.081
5.522LeuThr: 5.522 ± 0.076
5.421LeuVal: 5.421 ± 0.08
0.858LeuTrp: 0.858 ± 0.03
3.332LeuTyr: 3.332 ± 0.057
0.0LeuXaa: 0.0 ± 0.0
Met
1.671MetAla: 1.671 ± 0.041
0.148MetCys: 0.148 ± 0.012
1.343MetAsp: 1.343 ± 0.034
1.429MetGlu: 1.429 ± 0.04
0.821MetPhe: 0.821 ± 0.029
1.5MetGly: 1.5 ± 0.04
0.481MetHis: 0.481 ± 0.02
1.513MetIle: 1.513 ± 0.035
2.05MetLys: 2.05 ± 0.035
1.888MetLeu: 1.888 ± 0.039
0.572MetMet: 0.572 ± 0.024
1.359MetAsn: 1.359 ± 0.038
0.838MetPro: 0.838 ± 0.031
0.827MetGln: 0.827 ± 0.024
0.782MetArg: 0.782 ± 0.023
1.352MetSer: 1.352 ± 0.034
1.134MetThr: 1.134 ± 0.031
1.534MetVal: 1.534 ± 0.034
0.181MetTrp: 0.181 ± 0.013
0.735MetTyr: 0.735 ± 0.027
0.0MetXaa: 0.0 ± 0.0
Asn
4.353AsnAla: 4.353 ± 0.064
0.608AsnCys: 0.608 ± 0.031
3.343AsnAsp: 3.343 ± 0.064
3.864AsnGlu: 3.864 ± 0.056
3.286AsnPhe: 3.286 ± 0.072
4.928AsnGly: 4.928 ± 0.11
1.249AsnHis: 1.249 ± 0.03
5.166AsnIle: 5.166 ± 0.074
4.484AsnLys: 4.484 ± 0.07
5.908AsnLeu: 5.908 ± 0.088
1.318AsnMet: 1.318 ± 0.033
4.385AsnAsn: 4.385 ± 0.088
2.877AsnPro: 2.877 ± 0.056
2.535AsnGln: 2.535 ± 0.053
1.942AsnArg: 1.942 ± 0.047
4.178AsnSer: 4.178 ± 0.087
4.022AsnThr: 4.022 ± 0.072
3.555AsnVal: 3.555 ± 0.06
0.876AsnTrp: 0.876 ± 0.03
3.277AsnTyr: 3.277 ± 0.055
0.0AsnXaa: 0.0 ± 0.0
Pro
2.129ProAla: 2.129 ± 0.049
0.277ProCys: 0.277 ± 0.014
1.848ProAsp: 1.848 ± 0.046
2.152ProGlu: 2.152 ± 0.047
1.988ProPhe: 1.988 ± 0.038
1.931ProGly: 1.931 ± 0.046
0.562ProHis: 0.562 ± 0.023
3.193ProIle: 3.193 ± 0.055
2.388ProLys: 2.388 ± 0.052
2.869ProLeu: 2.869 ± 0.054
0.684ProMet: 0.684 ± 0.026
2.642ProAsn: 2.642 ± 0.055
0.866ProPro: 0.866 ± 0.031
0.994ProGln: 0.994 ± 0.031
0.747ProArg: 0.747 ± 0.023
2.249ProSer: 2.249 ± 0.05
2.186ProThr: 2.186 ± 0.053
2.176ProVal: 2.176 ± 0.045
0.303ProTrp: 0.303 ± 0.018
1.398ProTyr: 1.398 ± 0.043
0.0ProXaa: 0.0 ± 0.0
Gln
2.126GlnAla: 2.126 ± 0.049
0.218GlnCys: 0.218 ± 0.013
1.623GlnAsp: 1.623 ± 0.036
2.049GlnGlu: 2.049 ± 0.042
1.937GlnPhe: 1.937 ± 0.041
1.782GlnGly: 1.782 ± 0.038
0.632GlnHis: 0.632 ± 0.023
2.904GlnIle: 2.904 ± 0.047
2.755GlnLys: 2.755 ± 0.056
3.433GlnLeu: 3.433 ± 0.067
0.824GlnMet: 0.824 ± 0.028
2.484GlnAsn: 2.484 ± 0.059
1.068GlnPro: 1.068 ± 0.031
1.285GlnGln: 1.285 ± 0.039
0.908GlnArg: 0.908 ± 0.031
2.232GlnSer: 2.232 ± 0.044
2.054GlnThr: 2.054 ± 0.039
2.166GlnVal: 2.166 ± 0.04
0.416GlnTrp: 0.416 ± 0.02
1.487GlnTyr: 1.487 ± 0.037
0.0GlnXaa: 0.0 ± 0.0
Arg
1.674ArgAla: 1.674 ± 0.042
0.167ArgCys: 0.167 ± 0.011
1.469ArgAsp: 1.469 ± 0.036
1.665ArgGlu: 1.665 ± 0.036
1.662ArgPhe: 1.662 ± 0.042
1.56ArgGly: 1.56 ± 0.041
0.497ArgHis: 0.497 ± 0.023
2.646ArgIle: 2.646 ± 0.053
2.537ArgLys: 2.537 ± 0.057
2.791ArgLeu: 2.791 ± 0.051
0.802ArgMet: 0.802 ± 0.029
1.752ArgAsn: 1.752 ± 0.04
0.949ArgPro: 0.949 ± 0.034
0.885ArgGln: 0.885 ± 0.026
1.005ArgArg: 1.005 ± 0.034
1.659ArgSer: 1.659 ± 0.041
1.578ArgThr: 1.578 ± 0.037
1.735ArgVal: 1.735 ± 0.046
0.302ArgTrp: 0.302 ± 0.015
1.291ArgTyr: 1.291 ± 0.041
0.0ArgXaa: 0.0 ± 0.0
Ser
4.133SerAla: 4.133 ± 0.07
0.756SerCys: 0.756 ± 0.035
3.254SerAsp: 3.254 ± 0.054
3.413SerGlu: 3.413 ± 0.051
4.063SerPhe: 4.063 ± 0.066
4.526SerGly: 4.526 ± 0.084
1.068SerHis: 1.068 ± 0.034
6.114SerIle: 6.114 ± 0.08
4.635SerLys: 4.635 ± 0.072
6.247SerLeu: 6.247 ± 0.088
1.292SerMet: 1.292 ± 0.032
4.538SerAsn: 4.538 ± 0.089
2.35SerPro: 2.35 ± 0.049
2.054SerGln: 2.054 ± 0.047
1.742SerArg: 1.742 ± 0.04
4.36SerSer: 4.36 ± 0.075
4.014SerThr: 4.014 ± 0.067
3.993SerVal: 3.993 ± 0.071
0.641SerTrp: 0.641 ± 0.028
2.706SerTyr: 2.706 ± 0.052
0.001SerXaa: 0.001 ± 0.001
Thr
4.206ThrAla: 4.206 ± 0.073
0.538ThrCys: 0.538 ± 0.024
3.283ThrAsp: 3.283 ± 0.071
3.237ThrGlu: 3.237 ± 0.059
3.147ThrPhe: 3.147 ± 0.056
4.277ThrGly: 4.277 ± 0.087
1.023ThrHis: 1.023 ± 0.032
5.321ThrIle: 5.321 ± 0.081
3.599ThrLys: 3.599 ± 0.057
5.419ThrLeu: 5.419 ± 0.067
1.014ThrMet: 1.014 ± 0.029
3.742ThrAsn: 3.742 ± 0.08
2.365ThrPro: 2.365 ± 0.049
1.909ThrGln: 1.909 ± 0.045
1.353ThrArg: 1.353 ± 0.032
3.702ThrSer: 3.702 ± 0.074
3.689ThrThr: 3.689 ± 0.083
4.017ThrVal: 4.017 ± 0.066
0.684ThrTrp: 0.684 ± 0.026
2.936ThrTyr: 2.936 ± 0.063
0.0ThrXaa: 0.0 ± 0.0
Val
3.871ValAla: 3.871 ± 0.061
0.575ValCys: 0.575 ± 0.023
3.567ValAsp: 3.567 ± 0.058
3.727ValGlu: 3.727 ± 0.06
3.456ValPhe: 3.456 ± 0.058
3.893ValGly: 3.893 ± 0.07
1.035ValHis: 1.035 ± 0.031
4.615ValIle: 4.615 ± 0.067
4.397ValLys: 4.397 ± 0.067
5.848ValLeu: 5.848 ± 0.078
1.374ValMet: 1.374 ± 0.036
4.086ValAsn: 4.086 ± 0.078
2.034ValPro: 2.034 ± 0.044
1.904ValGln: 1.904 ± 0.036
1.703ValArg: 1.703 ± 0.041
4.2ValSer: 4.2 ± 0.064
3.408ValThr: 3.408 ± 0.078
3.963ValVal: 3.963 ± 0.068
0.662ValTrp: 0.662 ± 0.023
2.63ValTyr: 2.63 ± 0.05
0.001ValXaa: 0.001 ± 0.001
Trp
0.595TrpAla: 0.595 ± 0.023
0.101TrpCys: 0.101 ± 0.01
0.647TrpAsp: 0.647 ± 0.028
0.646TrpGlu: 0.646 ± 0.025
0.562TrpPhe: 0.562 ± 0.024
0.683TrpGly: 0.683 ± 0.027
0.232TrpHis: 0.232 ± 0.014
0.797TrpIle: 0.797 ± 0.029
0.722TrpLys: 0.722 ± 0.023
1.013TrpLeu: 1.013 ± 0.03
0.309TrpMet: 0.309 ± 0.015
0.688TrpAsn: 0.688 ± 0.027
0.226TrpPro: 0.226 ± 0.015
0.449TrpGln: 0.449 ± 0.021
0.393TrpArg: 0.393 ± 0.019
0.709TrpSer: 0.709 ± 0.029
0.595TrpThr: 0.595 ± 0.023
0.713TrpVal: 0.713 ± 0.024
0.147TrpTrp: 0.147 ± 0.012
0.453TrpTyr: 0.453 ± 0.024
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.763TyrAla: 2.763 ± 0.046
0.402TyrCys: 0.402 ± 0.018
2.347TyrAsp: 2.347 ± 0.046
2.319TyrGlu: 2.319 ± 0.045
2.716TyrPhe: 2.716 ± 0.051
2.595TyrGly: 2.595 ± 0.049
0.954TyrHis: 0.954 ± 0.027
2.89TyrIle: 2.89 ± 0.058
2.843TyrLys: 2.843 ± 0.054
4.186TyrLeu: 4.186 ± 0.065
0.739TyrMet: 0.739 ± 0.024
2.721TyrAsn: 2.721 ± 0.059
1.585TyrPro: 1.585 ± 0.041
1.899TyrGln: 1.899 ± 0.044
1.446TyrArg: 1.446 ± 0.037
2.837TyrSer: 2.837 ± 0.061
2.692TyrThr: 2.692 ± 0.067
2.197TyrVal: 2.197 ± 0.04
0.493TyrTrp: 0.493 ± 0.021
2.193TyrTyr: 2.193 ± 0.053
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
0.001XaaAsn: 0.001 ± 0.001
0.0XaaPro: 0.0 ± 0.0
0.0XaaGln: 0.0 ± 0.0
0.0XaaArg: 0.0 ± 0.0
0.0XaaSer: 0.0 ± 0.0
0.001XaaThr: 0.001 ± 0.001
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 3484 proteins (1212977 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