Amino acid dipepetide frequency for Streptomonospora sp. M2

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
24.659AlaAla: 24.659 ± 0.264
1.115AlaCys: 1.115 ± 0.031
9.567AlaAsp: 9.567 ± 0.091
10.774AlaGlu: 10.774 ± 0.109
3.474AlaPhe: 3.474 ± 0.047
13.688AlaGly: 13.688 ± 0.105
2.76AlaHis: 2.76 ± 0.045
3.457AlaIle: 3.457 ± 0.052
2.137AlaLys: 2.137 ± 0.045
13.76AlaLeu: 13.76 ± 0.139
2.609AlaMet: 2.609 ± 0.042
1.913AlaAsn: 1.913 ± 0.039
7.841AlaPro: 7.841 ± 0.089
3.827AlaGln: 3.827 ± 0.054
10.818AlaArg: 10.818 ± 0.108
5.816AlaSer: 5.816 ± 0.063
6.165AlaThr: 6.165 ± 0.057
12.398AlaVal: 12.398 ± 0.108
1.843AlaTrp: 1.843 ± 0.035
2.412AlaTyr: 2.412 ± 0.047
0.0AlaXaa: 0.0 ± 0.0
Cys
1.091CysAla: 1.091 ± 0.028
0.097CysCys: 0.097 ± 0.009
0.509CysAsp: 0.509 ± 0.017
0.438CysGlu: 0.438 ± 0.018
0.215CysPhe: 0.215 ± 0.013
1.052CysGly: 1.052 ± 0.028
0.219CysHis: 0.219 ± 0.011
0.178CysIle: 0.178 ± 0.012
0.094CysLys: 0.094 ± 0.008
0.685CysLeu: 0.685 ± 0.02
0.136CysMet: 0.136 ± 0.01
0.12CysAsn: 0.12 ± 0.009
0.532CysPro: 0.532 ± 0.021
0.155CysGln: 0.155 ± 0.012
0.712CysArg: 0.712 ± 0.023
0.477CysSer: 0.477 ± 0.02
0.472CysThr: 0.472 ± 0.016
0.601CysVal: 0.601 ± 0.02
0.109CysTrp: 0.109 ± 0.009
0.18CysTyr: 0.18 ± 0.011
0.0CysXaa: 0.0 ± 0.0
Asp
7.905AspAla: 7.905 ± 0.085
0.411AspCys: 0.411 ± 0.017
4.032AspAsp: 4.032 ± 0.057
4.088AspGlu: 4.088 ± 0.068
1.629AspPhe: 1.629 ± 0.031
5.968AspGly: 5.968 ± 0.064
1.462AspHis: 1.462 ± 0.031
2.065AspIle: 2.065 ± 0.04
0.871AspLys: 0.871 ± 0.023
6.019AspLeu: 6.019 ± 0.064
0.948AspMet: 0.948 ± 0.026
0.933AspAsn: 0.933 ± 0.027
4.748AspPro: 4.748 ± 0.056
1.489AspGln: 1.489 ± 0.033
5.233AspArg: 5.233 ± 0.059
3.066AspSer: 3.066 ± 0.047
3.452AspThr: 3.452 ± 0.049
4.704AspVal: 4.704 ± 0.063
0.889AspTrp: 0.889 ± 0.027
1.369AspTyr: 1.369 ± 0.03
0.0AspXaa: 0.0 ± 0.0
Glu
7.874GluAla: 7.874 ± 0.092
0.417GluCys: 0.417 ± 0.016
3.275GluAsp: 3.275 ± 0.046
4.345GluGlu: 4.345 ± 0.057
1.713GluPhe: 1.713 ± 0.03
4.995GluGly: 4.995 ± 0.057
1.811GluHis: 1.811 ± 0.038
2.422GluIle: 2.422 ± 0.042
1.138GluLys: 1.138 ± 0.032
6.852GluLeu: 6.852 ± 0.076
1.086GluMet: 1.086 ± 0.027
1.127GluAsn: 1.127 ± 0.028
4.056GluPro: 4.056 ± 0.066
2.506GluGln: 2.506 ± 0.044
6.472GluArg: 6.472 ± 0.073
3.354GluSer: 3.354 ± 0.049
3.141GluThr: 3.141 ± 0.047
4.97GluVal: 4.97 ± 0.064
0.912GluTrp: 0.912 ± 0.026
1.137GluTyr: 1.137 ± 0.028
0.0GluXaa: 0.0 ± 0.0
Phe
3.869PheAla: 3.869 ± 0.053
0.279PheCys: 0.279 ± 0.012
1.994PheAsp: 1.994 ± 0.034
1.402PheGlu: 1.402 ± 0.031
0.828PhePhe: 0.828 ± 0.027
3.017PheGly: 3.017 ± 0.049
0.565PheHis: 0.565 ± 0.017
0.762PheIle: 0.762 ± 0.026
0.356PheLys: 0.356 ± 0.013
2.474PheLeu: 2.474 ± 0.046
0.392PheMet: 0.392 ± 0.016
0.489PheAsn: 0.489 ± 0.022
1.318PhePro: 1.318 ± 0.033
0.627PheGln: 0.627 ± 0.019
1.692PheArg: 1.692 ± 0.034
1.562PheSer: 1.562 ± 0.03
1.893PheThr: 1.893 ± 0.035
2.184PheVal: 2.184 ± 0.039
0.398PheTrp: 0.398 ± 0.016
0.575PheTyr: 0.575 ± 0.018
0.0PheXaa: 0.0 ± 0.0
Gly
12.757GlyAla: 12.757 ± 0.12
0.874GlyCys: 0.874 ± 0.025
5.73GlyAsp: 5.73 ± 0.066
6.125GlyGlu: 6.125 ± 0.075
2.797GlyPhe: 2.797 ± 0.044
10.221GlyGly: 10.221 ± 0.129
2.241GlyHis: 2.241 ± 0.038
3.455GlyIle: 3.455 ± 0.046
1.77GlyLys: 1.77 ± 0.039
9.022GlyLeu: 9.022 ± 0.089
2.235GlyMet: 2.235 ± 0.034
1.556GlyAsn: 1.556 ± 0.032
5.249GlyPro: 5.249 ± 0.076
2.377GlyGln: 2.377 ± 0.041
8.233GlyArg: 8.233 ± 0.082
5.466GlySer: 5.466 ± 0.066
5.687GlyThr: 5.687 ± 0.066
7.716GlyVal: 7.716 ± 0.08
1.543GlyTrp: 1.543 ± 0.033
2.437GlyTyr: 2.437 ± 0.044
0.0GlyXaa: 0.0 ± 0.0
His
2.671HisAla: 2.671 ± 0.044
0.19HisCys: 0.19 ± 0.01
1.28HisAsp: 1.28 ± 0.03
1.237HisGlu: 1.237 ± 0.028
0.562HisPhe: 0.562 ± 0.019
2.295HisGly: 2.295 ± 0.041
0.614HisHis: 0.614 ± 0.02
0.696HisIle: 0.696 ± 0.02
0.303HisLys: 0.303 ± 0.014
2.252HisLeu: 2.252 ± 0.038
0.37HisMet: 0.37 ± 0.015
0.369HisAsn: 0.369 ± 0.014
1.821HisPro: 1.821 ± 0.037
0.549HisGln: 0.549 ± 0.021
2.244HisArg: 2.244 ± 0.041
1.061HisSer: 1.061 ± 0.025
1.301HisThr: 1.301 ± 0.032
1.616HisVal: 1.616 ± 0.031
0.324HisTrp: 0.324 ± 0.013
0.484HisTyr: 0.484 ± 0.017
0.0HisXaa: 0.0 ± 0.0
Ile
4.916IleAla: 4.916 ± 0.056
0.26IleCys: 0.26 ± 0.012
2.337IleAsp: 2.337 ± 0.044
2.003IleGlu: 2.003 ± 0.038
0.647IlePhe: 0.647 ± 0.025
3.661IleGly: 3.661 ± 0.055
0.559IleHis: 0.559 ± 0.018
0.948IleIle: 0.948 ± 0.027
0.53IleLys: 0.53 ± 0.019
2.355IleLeu: 2.355 ± 0.042
0.506IleMet: 0.506 ± 0.021
0.65IleAsn: 0.65 ± 0.024
1.721IlePro: 1.721 ± 0.036
0.682IleGln: 0.682 ± 0.019
2.336IleArg: 2.336 ± 0.039
1.714IleSer: 1.714 ± 0.031
2.109IleThr: 2.109 ± 0.039
2.709IleVal: 2.709 ± 0.048
0.345IleTrp: 0.345 ± 0.015
0.53IleTyr: 0.53 ± 0.02
0.0IleXaa: 0.0 ± 0.0
Lys
1.977LysAla: 1.977 ± 0.043
0.084LysCys: 0.084 ± 0.008
0.847LysAsp: 0.847 ± 0.028
0.917LysGlu: 0.917 ± 0.026
0.341LysPhe: 0.341 ± 0.016
1.3LysGly: 1.3 ± 0.037
0.346LysHis: 0.346 ± 0.014
0.598LysIle: 0.598 ± 0.022
0.476LysLys: 0.476 ± 0.025
1.488LysLeu: 1.488 ± 0.034
0.296LysMet: 0.296 ± 0.014
0.342LysAsn: 0.342 ± 0.017
0.976LysPro: 0.976 ± 0.026
0.546LysGln: 0.546 ± 0.018
1.484LysArg: 1.484 ± 0.04
0.952LysSer: 0.952 ± 0.031
0.952LysThr: 0.952 ± 0.027
1.279LysVal: 1.279 ± 0.032
0.194LysTrp: 0.194 ± 0.012
0.295LysTyr: 0.295 ± 0.012
0.0LysXaa: 0.0 ± 0.0
Leu
14.655LeuAla: 14.655 ± 0.125
0.812LeuCys: 0.812 ± 0.024
6.39LeuAsp: 6.39 ± 0.07
5.153LeuGlu: 5.153 ± 0.065
2.548LeuPhe: 2.548 ± 0.044
8.857LeuGly: 8.857 ± 0.084
2.169LeuHis: 2.169 ± 0.036
3.087LeuIle: 3.087 ± 0.051
1.434LeuLys: 1.434 ± 0.038
10.477LeuLeu: 10.477 ± 0.117
1.697LeuMet: 1.697 ± 0.033
1.617LeuAsn: 1.617 ± 0.032
5.846LeuPro: 5.846 ± 0.072
2.2LeuGln: 2.2 ± 0.042
8.899LeuArg: 8.899 ± 0.087
5.362LeuSer: 5.362 ± 0.058
5.403LeuThr: 5.403 ± 0.068
8.465LeuVal: 8.465 ± 0.077
1.276LeuTrp: 1.276 ± 0.03
1.661LeuTyr: 1.661 ± 0.031
0.0LeuXaa: 0.0 ± 0.0
Met
2.508MetAla: 2.508 ± 0.044
0.138MetCys: 0.138 ± 0.009
0.902MetAsp: 0.902 ± 0.022
0.888MetGlu: 0.888 ± 0.024
0.5MetPhe: 0.5 ± 0.018
1.502MetGly: 1.502 ± 0.03
0.399MetHis: 0.399 ± 0.015
0.652MetIle: 0.652 ± 0.018
0.307MetLys: 0.307 ± 0.014
1.848MetLeu: 1.848 ± 0.035
0.291MetMet: 0.291 ± 0.015
0.445MetAsn: 0.445 ± 0.015
1.205MetPro: 1.205 ± 0.027
0.506MetGln: 0.506 ± 0.018
1.678MetArg: 1.678 ± 0.033
1.457MetSer: 1.457 ± 0.027
1.367MetThr: 1.367 ± 0.026
1.42MetVal: 1.42 ± 0.03
0.232MetTrp: 0.232 ± 0.012
0.289MetTyr: 0.289 ± 0.015
0.0MetXaa: 0.0 ± 0.0
Asn
2.086AsnAla: 2.086 ± 0.033
0.155AsnCys: 0.155 ± 0.01
0.878AsnAsp: 0.878 ± 0.024
0.902AsnGlu: 0.902 ± 0.027
0.456AsnPhe: 0.456 ± 0.019
1.743AsnGly: 1.743 ± 0.035
0.357AsnHis: 0.357 ± 0.014
0.627AsnIle: 0.627 ± 0.02
0.27AsnLys: 0.27 ± 0.012
1.56AsnLeu: 1.56 ± 0.033
0.3AsnMet: 0.3 ± 0.014
0.362AsnAsn: 0.362 ± 0.017
1.287AsnPro: 1.287 ± 0.026
0.512AsnGln: 0.512 ± 0.02
1.459AsnArg: 1.459 ± 0.029
0.847AsnSer: 0.847 ± 0.025
1.04AsnThr: 1.04 ± 0.027
1.265AsnVal: 1.265 ± 0.032
0.25AsnTrp: 0.25 ± 0.014
0.411AsnTyr: 0.411 ± 0.016
0.0AsnXaa: 0.0 ± 0.0
Pro
8.84ProAla: 8.84 ± 0.108
0.348ProCys: 0.348 ± 0.015
4.527ProAsp: 4.527 ± 0.058
5.056ProGlu: 5.056 ± 0.065
1.482ProPhe: 1.482 ± 0.034
6.908ProGly: 6.908 ± 0.086
1.349ProHis: 1.349 ± 0.03
1.407ProIle: 1.407 ± 0.03
0.852ProLys: 0.852 ± 0.027
5.057ProLeu: 5.057 ± 0.054
1.068ProMet: 1.068 ± 0.027
0.895ProAsn: 0.895 ± 0.024
4.293ProPro: 4.293 ± 0.092
1.896ProGln: 1.896 ± 0.039
4.626ProArg: 4.626 ± 0.064
3.164ProSer: 3.164 ± 0.056
2.993ProThr: 2.993 ± 0.054
4.986ProVal: 4.986 ± 0.051
0.901ProTrp: 0.901 ± 0.025
1.224ProTyr: 1.224 ± 0.033
0.0ProXaa: 0.0 ± 0.0
Gln
3.634GlnAla: 3.634 ± 0.05
0.162GlnCys: 0.162 ± 0.011
1.194GlnAsp: 1.194 ± 0.029
1.633GlnGlu: 1.633 ± 0.034
0.574GlnPhe: 0.574 ± 0.019
2.344GlnGly: 2.344 ± 0.041
0.618GlnHis: 0.618 ± 0.021
1.031GlnIle: 1.031 ± 0.026
0.422GlnLys: 0.422 ± 0.015
2.544GlnLeu: 2.544 ± 0.046
0.523GlnMet: 0.523 ± 0.02
0.504GlnAsn: 0.504 ± 0.017
1.708GlnPro: 1.708 ± 0.04
1.278GlnGln: 1.278 ± 0.04
2.786GlnArg: 2.786 ± 0.049
1.374GlnSer: 1.374 ± 0.029
1.404GlnThr: 1.404 ± 0.032
2.198GlnVal: 2.198 ± 0.041
0.406GlnTrp: 0.406 ± 0.015
0.474GlnTyr: 0.474 ± 0.018
0.0GlnXaa: 0.0 ± 0.0
Arg
10.253ArgAla: 10.253 ± 0.11
0.704ArgCys: 0.704 ± 0.023
4.52ArgAsp: 4.52 ± 0.05
5.331ArgGlu: 5.331 ± 0.057
2.497ArgPhe: 2.497 ± 0.039
6.837ArgGly: 6.837 ± 0.073
2.083ArgHis: 2.083 ± 0.037
3.478ArgIle: 3.478 ± 0.046
1.482ArgLys: 1.482 ± 0.035
9.255ArgLeu: 9.255 ± 0.094
2.103ArgMet: 2.103 ± 0.035
1.485ArgAsn: 1.485 ± 0.035
5.497ArgPro: 5.497 ± 0.074
2.13ArgGln: 2.13 ± 0.045
9.488ArgArg: 9.488 ± 0.109
4.803ArgSer: 4.803 ± 0.056
4.817ArgThr: 4.817 ± 0.06
6.452ArgVal: 6.452 ± 0.064
1.35ArgTrp: 1.35 ± 0.03
1.799ArgTyr: 1.799 ± 0.035
0.0ArgXaa: 0.0 ± 0.0
Ser
7.945SerAla: 7.945 ± 0.067
0.427SerCys: 0.427 ± 0.017
2.87SerAsp: 2.87 ± 0.05
2.955SerGlu: 2.955 ± 0.053
1.457SerPhe: 1.457 ± 0.029
6.748SerGly: 6.748 ± 0.077
0.97SerHis: 0.97 ± 0.025
1.47SerIle: 1.47 ± 0.03
0.76SerLys: 0.76 ± 0.023
4.52SerLeu: 4.52 ± 0.065
1.052SerMet: 1.052 ± 0.026
0.8SerAsn: 0.8 ± 0.023
3.357SerPro: 3.357 ± 0.048
1.255SerGln: 1.255 ± 0.027
3.985SerArg: 3.985 ± 0.059
2.85SerSer: 2.85 ± 0.046
2.978SerThr: 2.978 ± 0.048
4.11SerVal: 4.11 ± 0.052
0.868SerTrp: 0.868 ± 0.027
1.124SerTyr: 1.124 ± 0.031
0.0SerXaa: 0.0 ± 0.0
Thr
8.373ThrAla: 8.373 ± 0.07
0.43ThrCys: 0.43 ± 0.018
3.357ThrAsp: 3.357 ± 0.049
3.28ThrGlu: 3.28 ± 0.046
1.38ThrPhe: 1.38 ± 0.028
6.356ThrGly: 6.356 ± 0.071
1.001ThrHis: 1.001 ± 0.029
1.524ThrIle: 1.524 ± 0.033
0.809ThrLys: 0.809 ± 0.025
4.865ThrLeu: 4.865 ± 0.059
0.949ThrMet: 0.949 ± 0.024
0.849ThrAsn: 0.849 ± 0.021
3.593ThrPro: 3.593 ± 0.051
1.175ThrGln: 1.175 ± 0.029
4.05ThrArg: 4.05 ± 0.053
2.739ThrSer: 2.739 ± 0.044
3.072ThrThr: 3.072 ± 0.048
5.077ThrVal: 5.077 ± 0.059
0.803ThrTrp: 0.803 ± 0.024
1.066ThrTyr: 1.066 ± 0.027
0.0ThrXaa: 0.0 ± 0.0
Val
10.957ValAla: 10.957 ± 0.096
0.831ValCys: 0.831 ± 0.023
5.036ValAsp: 5.036 ± 0.059
5.16ValGlu: 5.16 ± 0.065
2.521ValPhe: 2.521 ± 0.042
6.821ValGly: 6.821 ± 0.059
1.955ValHis: 1.955 ± 0.035
2.555ValIle: 2.555 ± 0.045
1.167ValLys: 1.167 ± 0.033
9.219ValLeu: 9.219 ± 0.097
1.408ValMet: 1.408 ± 0.031
1.54ValAsn: 1.54 ± 0.033
4.928ValPro: 4.928 ± 0.057
2.028ValGln: 2.028 ± 0.034
6.831ValArg: 6.831 ± 0.075
4.395ValSer: 4.395 ± 0.054
4.433ValThr: 4.433 ± 0.056
7.843ValVal: 7.843 ± 0.089
1.177ValTrp: 1.177 ± 0.028
1.626ValTyr: 1.626 ± 0.035
0.0ValXaa: 0.0 ± 0.0
Trp
1.584TrpAla: 1.584 ± 0.032
0.155TrpCys: 0.155 ± 0.01
0.761TrpAsp: 0.761 ± 0.021
0.775TrpGlu: 0.775 ± 0.023
0.472TrpPhe: 0.472 ± 0.017
1.084TrpGly: 1.084 ± 0.028
0.366TrpHis: 0.366 ± 0.015
0.531TrpIle: 0.531 ± 0.017
0.24TrpLys: 0.24 ± 0.013
1.658TrpLeu: 1.658 ± 0.035
0.302TrpMet: 0.302 ± 0.014
0.407TrpAsn: 0.407 ± 0.017
0.827TrpPro: 0.827 ± 0.023
0.543TrpGln: 0.543 ± 0.02
1.437TrpArg: 1.437 ± 0.035
0.95TrpSer: 0.95 ± 0.026
0.812TrpThr: 0.812 ± 0.022
0.972TrpVal: 0.972 ± 0.026
0.364TrpTrp: 0.364 ± 0.017
0.279TrpTyr: 0.279 ± 0.014
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.48TyrAla: 2.48 ± 0.037
0.183TyrCys: 0.183 ± 0.011
1.276TyrAsp: 1.276 ± 0.034
1.136TyrGlu: 1.136 ± 0.03
0.581TyrPhe: 0.581 ± 0.016
2.095TyrGly: 2.095 ± 0.042
0.393TyrHis: 0.393 ± 0.014
0.577TyrIle: 0.577 ± 0.02
0.271TyrLys: 0.271 ± 0.012
2.098TyrLeu: 2.098 ± 0.032
0.261TyrMet: 0.261 ± 0.014
0.364TyrAsn: 0.364 ± 0.016
1.069TyrPro: 1.069 ± 0.029
0.531TyrGln: 0.531 ± 0.018
1.899TyrArg: 1.899 ± 0.037
1.094TyrSer: 1.094 ± 0.027
1.262TyrThr: 1.262 ± 0.033
1.466TyrVal: 1.466 ± 0.027
0.337TyrTrp: 0.337 ± 0.015
0.469TyrTyr: 0.469 ± 0.018
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 5052 proteins (1614646 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