Amino acid dipepetide frequency for Streptomyces sp. ERV7

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
21.443AlaAla: 21.443 ± 0.158
1.076AlaCys: 1.076 ± 0.023
8.23AlaAsp: 8.23 ± 0.06
8.67AlaGlu: 8.67 ± 0.104
3.689AlaPhe: 3.689 ± 0.046
12.55AlaGly: 12.55 ± 0.085
2.975AlaHis: 2.975 ± 0.044
3.49AlaIle: 3.49 ± 0.047
3.318AlaLys: 3.318 ± 0.056
14.718AlaLeu: 14.718 ± 0.111
2.56AlaMet: 2.56 ± 0.035
2.021AlaAsn: 2.021 ± 0.038
7.048AlaPro: 7.048 ± 0.068
3.85AlaGln: 3.85 ± 0.05
10.214AlaArg: 10.214 ± 0.091
5.941AlaSer: 5.941 ± 0.062
7.052AlaThr: 7.052 ± 0.073
12.231AlaVal: 12.231 ± 0.098
1.819AlaTrp: 1.819 ± 0.034
2.97AlaTyr: 2.97 ± 0.04
0.0AlaXaa: 0.0 ± 0.0
Cys
1.138CysAla: 1.138 ± 0.028
0.087CysCys: 0.087 ± 0.007
0.504CysAsp: 0.504 ± 0.017
0.413CysGlu: 0.413 ± 0.015
0.22CysPhe: 0.22 ± 0.011
0.984CysGly: 0.984 ± 0.024
0.202CysHis: 0.202 ± 0.01
0.162CysIle: 0.162 ± 0.008
0.116CysLys: 0.116 ± 0.007
0.803CysLeu: 0.803 ± 0.02
0.14CysMet: 0.14 ± 0.008
0.133CysAsn: 0.133 ± 0.009
0.48CysPro: 0.48 ± 0.021
0.168CysGln: 0.168 ± 0.01
0.629CysArg: 0.629 ± 0.019
0.433CysSer: 0.433 ± 0.015
0.529CysThr: 0.529 ± 0.018
0.682CysVal: 0.682 ± 0.02
0.129CysTrp: 0.129 ± 0.009
0.158CysTyr: 0.158 ± 0.01
0.0CysXaa: 0.0 ± 0.0
Asp
7.736AspAla: 7.736 ± 0.073
0.422AspCys: 0.422 ± 0.015
3.417AspAsp: 3.417 ± 0.051
3.845AspGlu: 3.845 ± 0.055
1.726AspPhe: 1.726 ± 0.031
6.388AspGly: 6.388 ± 0.072
1.405AspHis: 1.405 ± 0.025
1.887AspIle: 1.887 ± 0.029
1.369AspLys: 1.369 ± 0.033
6.051AspLeu: 6.051 ± 0.063
0.815AspMet: 0.815 ± 0.022
1.031AspAsn: 1.031 ± 0.027
4.375AspPro: 4.375 ± 0.049
1.555AspGln: 1.555 ± 0.031
4.76AspArg: 4.76 ± 0.056
2.551AspSer: 2.551 ± 0.036
3.154AspThr: 3.154 ± 0.036
4.514AspVal: 4.514 ± 0.05
1.001AspTrp: 1.001 ± 0.023
1.139AspTyr: 1.139 ± 0.029
0.0AspXaa: 0.0 ± 0.0
Glu
7.35GluAla: 7.35 ± 0.085
0.37GluCys: 0.37 ± 0.015
2.747GluAsp: 2.747 ± 0.038
3.475GluGlu: 3.475 ± 0.05
1.464GluPhe: 1.464 ± 0.029
4.271GluGly: 4.271 ± 0.053
1.485GluHis: 1.485 ± 0.028
2.222GluIle: 2.222 ± 0.039
1.484GluLys: 1.484 ± 0.035
6.906GluLeu: 6.906 ± 0.077
0.902GluMet: 0.902 ± 0.024
1.026GluAsn: 1.026 ± 0.021
3.188GluPro: 3.188 ± 0.044
2.204GluGln: 2.204 ± 0.037
5.477GluArg: 5.477 ± 0.064
2.626GluSer: 2.626 ± 0.038
2.709GluThr: 2.709 ± 0.034
4.469GluVal: 4.469 ± 0.056
0.781GluTrp: 0.781 ± 0.023
1.148GluTyr: 1.148 ± 0.024
0.0GluXaa: 0.0 ± 0.0
Phe
3.792PheAla: 3.792 ± 0.05
0.298PheCys: 0.298 ± 0.014
2.001PheAsp: 2.001 ± 0.031
1.43PheGlu: 1.43 ± 0.028
0.919PhePhe: 0.919 ± 0.024
3.039PheGly: 3.039 ± 0.046
0.649PheHis: 0.649 ± 0.02
0.753PheIle: 0.753 ± 0.021
0.597PheLys: 0.597 ± 0.018
2.642PheLeu: 2.642 ± 0.042
0.416PheMet: 0.416 ± 0.017
0.587PheAsn: 0.587 ± 0.02
1.395PhePro: 1.395 ± 0.029
0.683PheGln: 0.683 ± 0.021
1.816PheArg: 1.816 ± 0.028
1.567PheSer: 1.567 ± 0.026
2.15PheThr: 2.15 ± 0.035
2.207PheVal: 2.207 ± 0.033
0.453PheTrp: 0.453 ± 0.018
0.605PheTyr: 0.605 ± 0.021
0.0PheXaa: 0.0 ± 0.0
Gly
11.124GlyAla: 11.124 ± 0.096
0.883GlyCys: 0.883 ± 0.022
5.11GlyAsp: 5.11 ± 0.058
5.13GlyGlu: 5.13 ± 0.061
2.886GlyPhe: 2.886 ± 0.045
8.717GlyGly: 8.717 ± 0.091
2.386GlyHis: 2.386 ± 0.038
3.416GlyIle: 3.416 ± 0.039
2.676GlyLys: 2.676 ± 0.047
9.445GlyLeu: 9.445 ± 0.087
2.011GlyMet: 2.011 ± 0.037
1.814GlyAsn: 1.814 ± 0.036
5.054GlyPro: 5.054 ± 0.062
2.77GlyGln: 2.77 ± 0.046
7.723GlyArg: 7.723 ± 0.076
5.43GlySer: 5.43 ± 0.063
6.196GlyThr: 6.196 ± 0.062
7.502GlyVal: 7.502 ± 0.07
1.758GlyTrp: 1.758 ± 0.035
2.346GlyTyr: 2.346 ± 0.042
0.0GlyXaa: 0.0 ± 0.0
His
2.669HisAla: 2.669 ± 0.034
0.231HisCys: 0.231 ± 0.011
1.342HisAsp: 1.342 ± 0.026
1.222HisGlu: 1.222 ± 0.026
0.708HisPhe: 0.708 ± 0.021
2.425HisGly: 2.425 ± 0.038
0.734HisHis: 0.734 ± 0.02
0.737HisIle: 0.737 ± 0.02
0.394HisLys: 0.394 ± 0.014
2.46HisLeu: 2.46 ± 0.038
0.371HisMet: 0.371 ± 0.013
0.371HisAsn: 0.371 ± 0.015
1.814HisPro: 1.814 ± 0.037
0.688HisGln: 0.688 ± 0.017
2.08HisArg: 2.08 ± 0.038
1.084HisSer: 1.084 ± 0.026
1.478HisThr: 1.478 ± 0.028
1.629HisVal: 1.629 ± 0.03
0.379HisTrp: 0.379 ± 0.015
0.486HisTyr: 0.486 ± 0.017
0.0HisXaa: 0.0 ± 0.0
Ile
4.789IleAla: 4.789 ± 0.053
0.299IleCys: 0.299 ± 0.012
2.219IleAsp: 2.219 ± 0.037
1.966IleGlu: 1.966 ± 0.039
0.705IlePhe: 0.705 ± 0.018
3.514IleGly: 3.514 ± 0.038
0.63IleHis: 0.63 ± 0.019
0.828IleIle: 0.828 ± 0.026
0.779IleLys: 0.779 ± 0.024
2.39IleLeu: 2.39 ± 0.041
0.419IleMet: 0.419 ± 0.018
0.729IleAsn: 0.729 ± 0.022
1.781IlePro: 1.781 ± 0.028
0.797IleGln: 0.797 ± 0.019
2.234IleArg: 2.234 ± 0.034
1.668IleSer: 1.668 ± 0.034
2.234IleThr: 2.234 ± 0.038
2.638IleVal: 2.638 ± 0.041
0.388IleTrp: 0.388 ± 0.014
0.555IleTyr: 0.555 ± 0.016
0.0IleXaa: 0.0 ± 0.0
Lys
3.286LysAla: 3.286 ± 0.059
0.155LysCys: 0.155 ± 0.01
1.494LysAsp: 1.494 ± 0.037
1.252LysGlu: 1.252 ± 0.033
0.515LysPhe: 0.515 ± 0.019
2.093LysGly: 2.093 ± 0.043
0.47LysHis: 0.47 ± 0.015
0.926LysIle: 0.926 ± 0.024
0.971LysLys: 0.971 ± 0.037
2.174LysLeu: 2.174 ± 0.037
0.438LysMet: 0.438 ± 0.016
0.599LysAsn: 0.599 ± 0.02
1.469LysPro: 1.469 ± 0.036
0.776LysGln: 0.776 ± 0.024
1.476LysArg: 1.476 ± 0.03
1.294LysSer: 1.294 ± 0.03
1.437LysThr: 1.437 ± 0.031
2.099LysVal: 2.099 ± 0.041
0.304LysTrp: 0.304 ± 0.014
0.532LysTyr: 0.532 ± 0.02
0.0LysXaa: 0.0 ± 0.0
Leu
15.317LeuAla: 15.317 ± 0.116
0.848LeuCys: 0.848 ± 0.02
6.827LeuAsp: 6.827 ± 0.068
4.608LeuGlu: 4.608 ± 0.062
2.703LeuPhe: 2.703 ± 0.043
9.358LeuGly: 9.358 ± 0.081
2.374LeuHis: 2.374 ± 0.04
3.222LeuIle: 3.222 ± 0.046
2.248LeuLys: 2.248 ± 0.041
11.113LeuLeu: 11.113 ± 0.113
1.721LeuMet: 1.721 ± 0.033
1.805LeuAsn: 1.805 ± 0.033
6.346LeuPro: 6.346 ± 0.06
2.173LeuGln: 2.173 ± 0.035
8.497LeuArg: 8.497 ± 0.074
5.373LeuSer: 5.373 ± 0.055
6.816LeuThr: 6.816 ± 0.064
8.805LeuVal: 8.805 ± 0.091
1.349LeuTrp: 1.349 ± 0.03
1.939LeuTyr: 1.939 ± 0.031
0.0LeuXaa: 0.0 ± 0.0
Met
2.344MetAla: 2.344 ± 0.039
0.143MetCys: 0.143 ± 0.008
0.913MetAsp: 0.913 ± 0.023
0.817MetGlu: 0.817 ± 0.022
0.465MetPhe: 0.465 ± 0.017
1.412MetGly: 1.412 ± 0.036
0.362MetHis: 0.362 ± 0.014
0.646MetIle: 0.646 ± 0.02
0.447MetLys: 0.447 ± 0.015
1.691MetLeu: 1.691 ± 0.026
0.312MetMet: 0.312 ± 0.014
0.448MetAsn: 0.448 ± 0.014
1.134MetPro: 1.134 ± 0.024
0.445MetGln: 0.445 ± 0.016
1.457MetArg: 1.457 ± 0.025
1.317MetSer: 1.317 ± 0.028
1.504MetThr: 1.504 ± 0.03
1.354MetVal: 1.354 ± 0.031
0.224MetTrp: 0.224 ± 0.012
0.365MetTyr: 0.365 ± 0.013
0.0MetXaa: 0.0 ± 0.0
Asn
2.287AsnAla: 2.287 ± 0.034
0.175AsnCys: 0.175 ± 0.011
0.976AsnAsp: 0.976 ± 0.023
0.869AsnGlu: 0.869 ± 0.019
0.5AsnPhe: 0.5 ± 0.017
2.015AsnGly: 2.015 ± 0.042
0.419AsnHis: 0.419 ± 0.016
0.68AsnIle: 0.68 ± 0.02
0.452AsnLys: 0.452 ± 0.018
1.68AsnLeu: 1.68 ± 0.033
0.323AsnMet: 0.323 ± 0.013
0.466AsnAsn: 0.466 ± 0.017
1.332AsnPro: 1.332 ± 0.029
0.541AsnGln: 0.541 ± 0.022
1.296AsnArg: 1.296 ± 0.026
0.973AsnSer: 0.973 ± 0.023
1.23AsnThr: 1.23 ± 0.033
1.426AsnVal: 1.426 ± 0.029
0.307AsnTrp: 0.307 ± 0.015
0.436AsnTyr: 0.436 ± 0.017
0.0AsnXaa: 0.0 ± 0.0
Pro
8.125ProAla: 8.125 ± 0.073
0.363ProCys: 0.363 ± 0.016
4.316ProAsp: 4.316 ± 0.056
4.161ProGlu: 4.161 ± 0.058
1.51ProPhe: 1.51 ± 0.03
6.55ProGly: 6.55 ± 0.074
1.422ProHis: 1.422 ± 0.028
1.236ProIle: 1.236 ± 0.025
1.33ProLys: 1.33 ± 0.029
5.356ProLeu: 5.356 ± 0.062
1.011ProMet: 1.011 ± 0.022
0.911ProAsn: 0.911 ± 0.025
3.136ProPro: 3.136 ± 0.055
1.861ProGln: 1.861 ± 0.034
3.71ProArg: 3.71 ± 0.048
3.174ProSer: 3.174 ± 0.051
3.027ProThr: 3.027 ± 0.044
5.503ProVal: 5.503 ± 0.058
0.868ProTrp: 0.868 ± 0.023
1.456ProTyr: 1.456 ± 0.029
0.0ProXaa: 0.0 ± 0.0
Gln
3.66GlnAla: 3.66 ± 0.052
0.202GlnCys: 0.202 ± 0.01
1.415GlnAsp: 1.415 ± 0.03
1.457GlnGlu: 1.457 ± 0.032
0.703GlnPhe: 0.703 ± 0.02
2.382GlnGly: 2.382 ± 0.039
0.693GlnHis: 0.693 ± 0.018
1.133GlnIle: 1.133 ± 0.026
0.689GlnLys: 0.689 ± 0.02
3.219GlnLeu: 3.219 ± 0.04
0.53GlnMet: 0.53 ± 0.018
0.524GlnAsn: 0.524 ± 0.019
1.634GlnPro: 1.634 ± 0.037
1.287GlnGln: 1.287 ± 0.035
2.382GlnArg: 2.382 ± 0.039
1.364GlnSer: 1.364 ± 0.026
1.372GlnThr: 1.372 ± 0.026
2.358GlnVal: 2.358 ± 0.04
0.521GlnTrp: 0.521 ± 0.016
0.678GlnTyr: 0.678 ± 0.021
0.0GlnXaa: 0.0 ± 0.0
Arg
9.843ArgAla: 9.843 ± 0.091
0.581ArgCys: 0.581 ± 0.016
4.183ArgAsp: 4.183 ± 0.049
4.671ArgGlu: 4.671 ± 0.054
2.33ArgPhe: 2.33 ± 0.04
5.794ArgGly: 5.794 ± 0.055
2.067ArgHis: 2.067 ± 0.039
3.29ArgIle: 3.29 ± 0.045
1.669ArgLys: 1.669 ± 0.034
8.662ArgLeu: 8.662 ± 0.083
1.766ArgMet: 1.766 ± 0.035
1.348ArgAsn: 1.348 ± 0.028
4.789ArgPro: 4.789 ± 0.061
2.301ArgGln: 2.301 ± 0.038
7.421ArgArg: 7.421 ± 0.079
3.912ArgSer: 3.912 ± 0.05
5.521ArgThr: 5.521 ± 0.063
5.769ArgVal: 5.769 ± 0.065
1.326ArgTrp: 1.326 ± 0.032
1.756ArgTyr: 1.756 ± 0.033
0.0ArgXaa: 0.0 ± 0.0
Ser
6.876SerAla: 6.876 ± 0.059
0.432SerCys: 0.432 ± 0.016
2.618SerAsp: 2.618 ± 0.047
2.355SerGlu: 2.355 ± 0.036
1.589SerPhe: 1.589 ± 0.029
6.137SerGly: 6.137 ± 0.069
1.048SerHis: 1.048 ± 0.023
1.418SerIle: 1.418 ± 0.027
1.15SerLys: 1.15 ± 0.028
4.908SerLeu: 4.908 ± 0.058
1.115SerMet: 1.115 ± 0.029
0.914SerAsn: 0.914 ± 0.026
3.123SerPro: 3.123 ± 0.044
1.274SerGln: 1.274 ± 0.026
3.602SerArg: 3.602 ± 0.045
2.877SerSer: 2.877 ± 0.05
3.217SerThr: 3.217 ± 0.049
4.28SerVal: 4.28 ± 0.053
0.936SerTrp: 0.936 ± 0.024
1.298SerTyr: 1.298 ± 0.026
0.0SerXaa: 0.0 ± 0.0
Thr
8.957ThrAla: 8.957 ± 0.075
0.417ThrCys: 0.417 ± 0.017
3.478ThrAsp: 3.478 ± 0.048
3.196ThrGlu: 3.196 ± 0.044
1.64ThrPhe: 1.64 ± 0.031
6.797ThrGly: 6.797 ± 0.063
1.238ThrHis: 1.238 ± 0.028
1.657ThrIle: 1.657 ± 0.032
1.278ThrLys: 1.278 ± 0.036
5.801ThrLeu: 5.801 ± 0.061
0.936ThrMet: 0.936 ± 0.024
1.052ThrAsn: 1.052 ± 0.023
4.042ThrPro: 4.042 ± 0.053
1.382ThrGln: 1.382 ± 0.03
3.965ThrArg: 3.965 ± 0.05
3.218ThrSer: 3.218 ± 0.046
3.86ThrThr: 3.86 ± 0.062
6.101ThrVal: 6.101 ± 0.064
0.889ThrTrp: 0.889 ± 0.021
1.465ThrTyr: 1.465 ± 0.036
0.0ThrXaa: 0.0 ± 0.0
Val
10.495ValAla: 10.495 ± 0.085
0.779ValCys: 0.779 ± 0.021
4.968ValAsp: 4.968 ± 0.051
4.743ValGlu: 4.743 ± 0.058
2.458ValPhe: 2.458 ± 0.04
6.47ValGly: 6.47 ± 0.064
1.952ValHis: 1.952 ± 0.036
2.829ValIle: 2.829 ± 0.042
1.926ValLys: 1.926 ± 0.035
9.462ValLeu: 9.462 ± 0.084
1.445ValMet: 1.445 ± 0.031
1.718ValAsn: 1.718 ± 0.032
5.033ValPro: 5.033 ± 0.058
2.171ValGln: 2.171 ± 0.038
7.142ValArg: 7.142 ± 0.078
4.373ValSer: 4.373 ± 0.054
5.488ValThr: 5.488 ± 0.062
7.79ValVal: 7.79 ± 0.08
1.154ValTrp: 1.154 ± 0.025
1.638ValTyr: 1.638 ± 0.035
0.0ValXaa: 0.0 ± 0.0
Trp
1.7TrpAla: 1.7 ± 0.033
0.159TrpCys: 0.159 ± 0.01
0.822TrpAsp: 0.822 ± 0.024
0.705TrpGlu: 0.705 ± 0.025
0.518TrpPhe: 0.518 ± 0.017
1.064TrpGly: 1.064 ± 0.023
0.371TrpHis: 0.371 ± 0.015
0.555TrpIle: 0.555 ± 0.017
0.404TrpLys: 0.404 ± 0.016
1.796TrpLeu: 1.796 ± 0.036
0.295TrpMet: 0.295 ± 0.012
0.451TrpAsn: 0.451 ± 0.019
0.772TrpPro: 0.772 ± 0.02
0.658TrpGln: 0.658 ± 0.02
1.278TrpArg: 1.278 ± 0.028
0.966TrpSer: 0.966 ± 0.027
1.084TrpThr: 1.084 ± 0.024
0.972TrpVal: 0.972 ± 0.02
0.338TrpTrp: 0.338 ± 0.014
0.389TrpTyr: 0.389 ± 0.016
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.934TyrAla: 2.934 ± 0.04
0.191TyrCys: 0.191 ± 0.01
1.562TyrAsp: 1.562 ± 0.034
1.319TyrGlu: 1.319 ± 0.026
0.748TyrPhe: 0.748 ± 0.022
2.418TyrGly: 2.418 ± 0.045
0.422TyrHis: 0.422 ± 0.014
0.475TyrIle: 0.475 ± 0.017
0.462TyrLys: 0.462 ± 0.019
2.165TyrLeu: 2.165 ± 0.033
0.274TyrMet: 0.274 ± 0.012
0.434TyrAsn: 0.434 ± 0.017
1.082TyrPro: 1.082 ± 0.029
0.62TyrGln: 0.62 ± 0.021
1.839TyrArg: 1.839 ± 0.033
1.025TyrSer: 1.025 ± 0.027
1.312TyrThr: 1.312 ± 0.029
1.705TyrVal: 1.705 ± 0.032
0.373TyrTrp: 0.373 ± 0.016
0.496TyrTyr: 0.496 ± 0.019
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 5791 proteins (1884294 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