Amino acid dipepetide frequency for Streptomyces tsukubensis

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
19.949AlaAla: 19.949 ± 0.154
0.958AlaCys: 0.958 ± 0.025
8.06AlaAsp: 8.06 ± 0.068
8.638AlaGlu: 8.638 ± 0.091
3.382AlaPhe: 3.382 ± 0.045
13.344AlaGly: 13.344 ± 0.093
2.929AlaHis: 2.929 ± 0.035
3.281AlaIle: 3.281 ± 0.052
3.037AlaLys: 3.037 ± 0.052
13.936AlaLeu: 13.936 ± 0.116
2.452AlaMet: 2.452 ± 0.032
1.76AlaAsn: 1.76 ± 0.032
7.408AlaPro: 7.408 ± 0.119
3.516AlaGln: 3.516 ± 0.047
10.233AlaArg: 10.233 ± 0.08
6.271AlaSer: 6.271 ± 0.061
7.109AlaThr: 7.109 ± 0.065
11.839AlaVal: 11.839 ± 0.096
1.761AlaTrp: 1.761 ± 0.033
2.653AlaTyr: 2.653 ± 0.033
0.0AlaXaa: 0.0 ± 0.0
Cys
1.011CysAla: 1.011 ± 0.029
0.073CysCys: 0.073 ± 0.007
0.449CysAsp: 0.449 ± 0.019
0.389CysGlu: 0.389 ± 0.016
0.203CysPhe: 0.203 ± 0.01
0.932CysGly: 0.932 ± 0.025
0.187CysHis: 0.187 ± 0.01
0.11CysIle: 0.11 ± 0.008
0.101CysLys: 0.101 ± 0.008
0.679CysLeu: 0.679 ± 0.022
0.109CysMet: 0.109 ± 0.008
0.112CysAsn: 0.112 ± 0.008
0.448CysPro: 0.448 ± 0.017
0.157CysGln: 0.157 ± 0.01
0.541CysArg: 0.541 ± 0.018
0.387CysSer: 0.387 ± 0.015
0.438CysThr: 0.438 ± 0.017
0.718CysVal: 0.718 ± 0.022
0.113CysTrp: 0.113 ± 0.008
0.143CysTyr: 0.143 ± 0.008
0.0CysXaa: 0.0 ± 0.0
Asp
7.475AspAla: 7.475 ± 0.07
0.389AspCys: 0.389 ± 0.016
3.65AspAsp: 3.65 ± 0.048
3.856AspGlu: 3.856 ± 0.051
1.613AspPhe: 1.613 ± 0.03
6.351AspGly: 6.351 ± 0.065
1.563AspHis: 1.563 ± 0.025
2.046AspIle: 2.046 ± 0.033
1.318AspLys: 1.318 ± 0.031
5.975AspLeu: 5.975 ± 0.051
0.879AspMet: 0.879 ± 0.016
1.031AspAsn: 1.031 ± 0.023
4.539AspPro: 4.539 ± 0.069
1.582AspGln: 1.582 ± 0.027
4.94AspArg: 4.94 ± 0.062
3.05AspSer: 3.05 ± 0.051
3.431AspThr: 3.431 ± 0.04
4.59AspVal: 4.59 ± 0.049
0.993AspTrp: 0.993 ± 0.023
1.074AspTyr: 1.074 ± 0.023
0.0AspXaa: 0.0 ± 0.0
Glu
7.344GluAla: 7.344 ± 0.087
0.361GluCys: 0.361 ± 0.016
2.917GluAsp: 2.917 ± 0.044
3.811GluGlu: 3.811 ± 0.06
1.48GluPhe: 1.48 ± 0.032
4.761GluGly: 4.761 ± 0.048
1.476GluHis: 1.476 ± 0.029
2.208GluIle: 2.208 ± 0.035
1.531GluLys: 1.531 ± 0.032
6.739GluLeu: 6.739 ± 0.066
0.925GluMet: 0.925 ± 0.02
1.08GluAsn: 1.08 ± 0.023
3.449GluPro: 3.449 ± 0.066
2.119GluGln: 2.119 ± 0.04
5.595GluArg: 5.595 ± 0.06
2.897GluSer: 2.897 ± 0.04
3.048GluThr: 3.048 ± 0.043
4.354GluVal: 4.354 ± 0.05
0.797GluTrp: 0.797 ± 0.021
1.146GluTyr: 1.146 ± 0.025
0.0GluXaa: 0.0 ± 0.0
Phe
3.591PheAla: 3.591 ± 0.039
0.246PheCys: 0.246 ± 0.012
2.041PheAsp: 2.041 ± 0.031
1.379PheGlu: 1.379 ± 0.026
0.862PhePhe: 0.862 ± 0.022
2.987PheGly: 2.987 ± 0.041
0.639PheHis: 0.639 ± 0.015
0.752PheIle: 0.752 ± 0.019
0.534PheLys: 0.534 ± 0.016
2.519PheLeu: 2.519 ± 0.038
0.416PheMet: 0.416 ± 0.014
0.573PheAsn: 0.573 ± 0.016
1.375PhePro: 1.375 ± 0.029
0.683PheGln: 0.683 ± 0.018
1.751PheArg: 1.751 ± 0.024
1.53PheSer: 1.53 ± 0.027
2.023PheThr: 2.023 ± 0.035
2.165PheVal: 2.165 ± 0.035
0.432PheTrp: 0.432 ± 0.015
0.565PheTyr: 0.565 ± 0.013
0.0PheXaa: 0.0 ± 0.0
Gly
11.804GlyAla: 11.804 ± 0.1
0.799GlyCys: 0.799 ± 0.022
5.417GlyAsp: 5.417 ± 0.051
5.496GlyGlu: 5.496 ± 0.057
2.841GlyPhe: 2.841 ± 0.04
9.497GlyGly: 9.497 ± 0.096
2.481GlyHis: 2.481 ± 0.037
3.323GlyIle: 3.323 ± 0.048
2.555GlyLys: 2.555 ± 0.046
9.405GlyLeu: 9.405 ± 0.074
2.026GlyMet: 2.026 ± 0.034
1.782GlyAsn: 1.782 ± 0.033
5.542GlyPro: 5.542 ± 0.07
2.828GlyGln: 2.828 ± 0.051
7.924GlyArg: 7.924 ± 0.076
5.927GlySer: 5.927 ± 0.062
6.328GlyThr: 6.328 ± 0.065
7.712GlyVal: 7.712 ± 0.071
1.648GlyTrp: 1.648 ± 0.027
2.232GlyTyr: 2.232 ± 0.034
0.0GlyXaa: 0.0 ± 0.0
His
2.772HisAla: 2.772 ± 0.039
0.192HisCys: 0.192 ± 0.009
1.346HisAsp: 1.346 ± 0.025
1.261HisGlu: 1.261 ± 0.025
0.668HisPhe: 0.668 ± 0.016
2.498HisGly: 2.498 ± 0.032
0.749HisHis: 0.749 ± 0.02
0.735HisIle: 0.735 ± 0.021
0.356HisLys: 0.356 ± 0.013
2.493HisLeu: 2.493 ± 0.036
0.356HisMet: 0.356 ± 0.014
0.357HisAsn: 0.357 ± 0.013
1.827HisPro: 1.827 ± 0.03
0.681HisGln: 0.681 ± 0.017
2.104HisArg: 2.104 ± 0.032
1.15HisSer: 1.15 ± 0.025
1.445HisThr: 1.445 ± 0.025
1.706HisVal: 1.706 ± 0.026
0.365HisTrp: 0.365 ± 0.012
0.483HisTyr: 0.483 ± 0.018
0.0HisXaa: 0.0 ± 0.0
Ile
4.53IleAla: 4.53 ± 0.067
0.282IleCys: 0.282 ± 0.012
2.228IleAsp: 2.228 ± 0.037
1.966IleGlu: 1.966 ± 0.038
0.696IlePhe: 0.696 ± 0.018
3.54IleGly: 3.54 ± 0.055
0.619IleHis: 0.619 ± 0.017
0.873IleIle: 0.873 ± 0.024
0.761IleLys: 0.761 ± 0.022
2.403IleLeu: 2.403 ± 0.044
0.463IleMet: 0.463 ± 0.016
0.691IleAsn: 0.691 ± 0.02
1.703IlePro: 1.703 ± 0.03
0.694IleGln: 0.694 ± 0.02
2.122IleArg: 2.122 ± 0.033
1.736IleSer: 1.736 ± 0.03
2.186IleThr: 2.186 ± 0.039
2.613IleVal: 2.613 ± 0.039
0.355IleTrp: 0.355 ± 0.014
0.504IleTyr: 0.504 ± 0.017
0.0IleXaa: 0.0 ± 0.0
Lys
2.936LysAla: 2.936 ± 0.048
0.125LysCys: 0.125 ± 0.007
1.472LysAsp: 1.472 ± 0.029
1.312LysGlu: 1.312 ± 0.033
0.495LysPhe: 0.495 ± 0.017
2.146LysGly: 2.146 ± 0.041
0.432LysHis: 0.432 ± 0.014
0.882LysIle: 0.882 ± 0.024
1.024LysLys: 1.024 ± 0.034
2.021LysLeu: 2.021 ± 0.032
0.394LysMet: 0.394 ± 0.016
0.57LysAsn: 0.57 ± 0.02
1.38LysPro: 1.38 ± 0.029
0.721LysGln: 0.721 ± 0.025
1.52LysArg: 1.52 ± 0.025
1.288LysSer: 1.288 ± 0.026
1.307LysThr: 1.307 ± 0.027
1.853LysVal: 1.853 ± 0.035
0.279LysTrp: 0.279 ± 0.012
0.476LysTyr: 0.476 ± 0.018
0.0LysXaa: 0.0 ± 0.0
Leu
14.218LeuAla: 14.218 ± 0.112
0.81LeuCys: 0.81 ± 0.022
6.66LeuAsp: 6.66 ± 0.065
4.434LeuGlu: 4.434 ± 0.052
2.603LeuPhe: 2.603 ± 0.038
9.088LeuGly: 9.088 ± 0.087
2.353LeuHis: 2.353 ± 0.033
3.303LeuIle: 3.303 ± 0.055
2.03LeuLys: 2.03 ± 0.038
10.837LeuLeu: 10.837 ± 0.096
1.634LeuMet: 1.634 ± 0.029
1.74LeuAsn: 1.74 ± 0.026
6.461LeuPro: 6.461 ± 0.079
2.047LeuGln: 2.047 ± 0.034
8.566LeuArg: 8.566 ± 0.068
5.778LeuSer: 5.778 ± 0.048
6.864LeuThr: 6.864 ± 0.056
8.44LeuVal: 8.44 ± 0.082
1.263LeuTrp: 1.263 ± 0.027
1.822LeuTyr: 1.822 ± 0.03
0.0LeuXaa: 0.0 ± 0.0
Met
2.256MetAla: 2.256 ± 0.037
0.122MetCys: 0.122 ± 0.008
0.961MetAsp: 0.961 ± 0.021
0.834MetGlu: 0.834 ± 0.019
0.467MetPhe: 0.467 ± 0.016
1.375MetGly: 1.375 ± 0.027
0.343MetHis: 0.343 ± 0.015
0.635MetIle: 0.635 ± 0.02
0.429MetLys: 0.429 ± 0.014
1.648MetLeu: 1.648 ± 0.029
0.318MetMet: 0.318 ± 0.013
0.441MetAsn: 0.441 ± 0.014
1.125MetPro: 1.125 ± 0.023
0.414MetGln: 0.414 ± 0.016
1.492MetArg: 1.492 ± 0.026
1.327MetSer: 1.327 ± 0.026
1.483MetThr: 1.483 ± 0.027
1.321MetVal: 1.321 ± 0.024
0.22MetTrp: 0.22 ± 0.011
0.321MetTyr: 0.321 ± 0.011
0.0MetXaa: 0.0 ± 0.0
Asn
2.084AsnAla: 2.084 ± 0.028
0.155AsnCys: 0.155 ± 0.009
0.943AsnAsp: 0.943 ± 0.022
0.831AsnGlu: 0.831 ± 0.02
0.488AsnPhe: 0.488 ± 0.016
1.867AsnGly: 1.867 ± 0.034
0.415AsnHis: 0.415 ± 0.013
0.678AsnIle: 0.678 ± 0.02
0.452AsnLys: 0.452 ± 0.017
1.608AsnLeu: 1.608 ± 0.025
0.313AsnMet: 0.313 ± 0.012
0.43AsnAsn: 0.43 ± 0.017
1.307AsnPro: 1.307 ± 0.028
0.513AsnGln: 0.513 ± 0.016
1.242AsnArg: 1.242 ± 0.028
0.987AsnSer: 0.987 ± 0.021
1.148AsnThr: 1.148 ± 0.024
1.296AsnVal: 1.296 ± 0.025
0.278AsnTrp: 0.278 ± 0.011
0.402AsnTyr: 0.402 ± 0.013
0.0AsnXaa: 0.0 ± 0.0
Pro
8.454ProAla: 8.454 ± 0.119
0.312ProCys: 0.312 ± 0.015
4.335ProAsp: 4.335 ± 0.058
4.534ProGlu: 4.534 ± 0.066
1.541ProPhe: 1.541 ± 0.03
6.855ProGly: 6.855 ± 0.083
1.525ProHis: 1.525 ± 0.027
1.245ProIle: 1.245 ± 0.026
1.273ProLys: 1.273 ± 0.029
5.428ProLeu: 5.428 ± 0.06
1.009ProMet: 1.009 ± 0.021
0.852ProAsn: 0.852 ± 0.022
3.671ProPro: 3.671 ± 0.082
1.739ProGln: 1.739 ± 0.038
4.187ProArg: 4.187 ± 0.054
3.592ProSer: 3.592 ± 0.059
3.27ProThr: 3.27 ± 0.052
5.492ProVal: 5.492 ± 0.067
0.889ProTrp: 0.889 ± 0.023
1.443ProTyr: 1.443 ± 0.026
0.0ProXaa: 0.0 ± 0.0
Gln
3.366GlnAla: 3.366 ± 0.047
0.155GlnCys: 0.155 ± 0.01
1.472GlnAsp: 1.472 ± 0.03
1.536GlnGlu: 1.536 ± 0.04
0.661GlnPhe: 0.661 ± 0.019
2.389GlnGly: 2.389 ± 0.039
0.657GlnHis: 0.657 ± 0.019
1.034GlnIle: 1.034 ± 0.023
0.627GlnLys: 0.627 ± 0.019
2.863GlnLeu: 2.863 ± 0.039
0.484GlnMet: 0.484 ± 0.015
0.525GlnAsn: 0.525 ± 0.015
1.634GlnPro: 1.634 ± 0.035
1.226GlnGln: 1.226 ± 0.035
2.335GlnArg: 2.335 ± 0.034
1.311GlnSer: 1.311 ± 0.025
1.306GlnThr: 1.306 ± 0.026
2.268GlnVal: 2.268 ± 0.036
0.443GlnTrp: 0.443 ± 0.016
0.64GlnTyr: 0.64 ± 0.02
0.0GlnXaa: 0.0 ± 0.0
Arg
10.036ArgAla: 10.036 ± 0.086
0.542ArgCys: 0.542 ± 0.018
4.382ArgAsp: 4.382 ± 0.051
4.799ArgGlu: 4.799 ± 0.055
2.309ArgPhe: 2.309 ± 0.033
6.334ArgGly: 6.334 ± 0.062
2.044ArgHis: 2.044 ± 0.029
2.948ArgIle: 2.948 ± 0.036
1.677ArgLys: 1.677 ± 0.03
8.535ArgLeu: 8.535 ± 0.075
1.696ArgMet: 1.696 ± 0.026
1.28ArgAsn: 1.28 ± 0.024
5.046ArgPro: 5.046 ± 0.072
2.265ArgGln: 2.265 ± 0.04
7.336ArgArg: 7.336 ± 0.079
4.296ArgSer: 4.296 ± 0.051
5.567ArgThr: 5.567 ± 0.058
5.98ArgVal: 5.98 ± 0.057
1.323ArgTrp: 1.323 ± 0.026
1.76ArgTyr: 1.76 ± 0.032
0.0ArgXaa: 0.0 ± 0.0
Ser
7.359SerAla: 7.359 ± 0.073
0.394SerCys: 0.394 ± 0.013
3.223SerAsp: 3.223 ± 0.057
2.729SerGlu: 2.729 ± 0.05
1.621SerPhe: 1.621 ± 0.027
6.638SerGly: 6.638 ± 0.074
1.172SerHis: 1.172 ± 0.021
1.412SerIle: 1.412 ± 0.029
1.153SerLys: 1.153 ± 0.028
5.103SerLeu: 5.103 ± 0.054
1.123SerMet: 1.123 ± 0.027
0.874SerAsn: 0.874 ± 0.023
3.452SerPro: 3.452 ± 0.051
1.336SerGln: 1.336 ± 0.027
3.841SerArg: 3.841 ± 0.047
3.194SerSer: 3.194 ± 0.06
3.363SerThr: 3.363 ± 0.044
4.517SerVal: 4.517 ± 0.051
0.926SerTrp: 0.926 ± 0.022
1.278SerTyr: 1.278 ± 0.024
0.0SerXaa: 0.0 ± 0.0
Thr
8.727ThrAla: 8.727 ± 0.08
0.365ThrCys: 0.365 ± 0.016
3.671ThrAsp: 3.671 ± 0.048
3.487ThrGlu: 3.487 ± 0.044
1.639ThrPhe: 1.639 ± 0.031
7.023ThrGly: 7.023 ± 0.068
1.256ThrHis: 1.256 ± 0.026
1.629ThrIle: 1.629 ± 0.034
1.228ThrLys: 1.228 ± 0.031
5.741ThrLeu: 5.741 ± 0.056
0.964ThrMet: 0.964 ± 0.02
0.956ThrAsn: 0.956 ± 0.021
4.274ThrPro: 4.274 ± 0.057
1.34ThrGln: 1.34 ± 0.027
4.116ThrArg: 4.116 ± 0.046
3.418ThrSer: 3.418 ± 0.048
3.92ThrThr: 3.92 ± 0.052
6.106ThrVal: 6.106 ± 0.054
0.883ThrTrp: 0.883 ± 0.019
1.34ThrTyr: 1.34 ± 0.029
0.0ThrXaa: 0.0 ± 0.0
Val
10.325ValAla: 10.325 ± 0.09
0.713ValCys: 0.713 ± 0.022
4.833ValAsp: 4.833 ± 0.052
4.778ValGlu: 4.778 ± 0.055
2.385ValPhe: 2.385 ± 0.035
6.544ValGly: 6.544 ± 0.069
1.937ValHis: 1.937 ± 0.033
2.835ValIle: 2.835 ± 0.049
1.765ValLys: 1.765 ± 0.033
9.291ValLeu: 9.291 ± 0.087
1.43ValMet: 1.43 ± 0.032
1.585ValAsn: 1.585 ± 0.031
5.188ValPro: 5.188 ± 0.061
1.898ValGln: 1.898 ± 0.031
7.224ValArg: 7.224 ± 0.069
4.542ValSer: 4.542 ± 0.046
5.666ValThr: 5.666 ± 0.055
7.682ValVal: 7.682 ± 0.086
1.093ValTrp: 1.093 ± 0.025
1.528ValTyr: 1.528 ± 0.03
0.0ValXaa: 0.0 ± 0.0
Trp
1.599TrpAla: 1.599 ± 0.031
0.143TrpCys: 0.143 ± 0.009
0.824TrpAsp: 0.824 ± 0.021
0.722TrpGlu: 0.722 ± 0.019
0.503TrpPhe: 0.503 ± 0.013
1.053TrpGly: 1.053 ± 0.023
0.382TrpHis: 0.382 ± 0.013
0.532TrpIle: 0.532 ± 0.017
0.392TrpLys: 0.392 ± 0.014
1.677TrpLeu: 1.677 ± 0.031
0.293TrpMet: 0.293 ± 0.013
0.414TrpAsn: 0.414 ± 0.016
0.756TrpPro: 0.756 ± 0.018
0.58TrpGln: 0.58 ± 0.014
1.299TrpArg: 1.299 ± 0.027
0.99TrpSer: 0.99 ± 0.026
0.969TrpThr: 0.969 ± 0.02
0.94TrpVal: 0.94 ± 0.021
0.315TrpTrp: 0.315 ± 0.013
0.354TrpTyr: 0.354 ± 0.014
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.68TyrAla: 2.68 ± 0.033
0.16TyrCys: 0.16 ± 0.009
1.464TyrAsp: 1.464 ± 0.038
1.247TyrGlu: 1.247 ± 0.027
0.609TyrPhe: 0.609 ± 0.018
2.342TyrGly: 2.342 ± 0.032
0.386TyrHis: 0.386 ± 0.012
0.507TyrIle: 0.507 ± 0.016
0.392TyrLys: 0.392 ± 0.013
2.048TyrLeu: 2.048 ± 0.031
0.249TyrMet: 0.249 ± 0.013
0.383TyrAsn: 0.383 ± 0.013
1.058TyrPro: 1.058 ± 0.023
0.594TyrGln: 0.594 ± 0.017
1.789TyrArg: 1.789 ± 0.03
1.037TyrSer: 1.037 ± 0.023
1.212TyrThr: 1.212 ± 0.021
1.648TyrVal: 1.648 ± 0.027
0.362TyrTrp: 0.362 ± 0.013
0.441TyrTyr: 0.441 ± 0.016
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 6478 proteins (2226907 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