Amino acid dipepetide frequency for Streptomyces sp. H-KF8

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
20.272AlaAla: 20.272 ± 0.166
1.043AlaCys: 1.043 ± 0.024
8.269AlaAsp: 8.269 ± 0.082
8.885AlaGlu: 8.885 ± 0.105
3.407AlaPhe: 3.407 ± 0.042
13.445AlaGly: 13.445 ± 0.102
2.93AlaHis: 2.93 ± 0.04
2.999AlaIle: 2.999 ± 0.044
2.647AlaLys: 2.647 ± 0.046
14.255AlaLeu: 14.255 ± 0.104
2.361AlaMet: 2.361 ± 0.04
1.777AlaAsn: 1.777 ± 0.035
7.393AlaPro: 7.393 ± 0.089
3.402AlaGln: 3.402 ± 0.042
10.618AlaArg: 10.618 ± 0.103
5.894AlaSer: 5.894 ± 0.054
6.723AlaThr: 6.723 ± 0.062
12.22AlaVal: 12.22 ± 0.1
1.797AlaTrp: 1.797 ± 0.031
2.702AlaTyr: 2.702 ± 0.035
0.0AlaXaa: 0.0 ± 0.0
Cys
1.042CysAla: 1.042 ± 0.025
0.09CysCys: 0.09 ± 0.008
0.461CysAsp: 0.461 ± 0.015
0.383CysGlu: 0.383 ± 0.014
0.213CysPhe: 0.213 ± 0.01
0.93CysGly: 0.93 ± 0.025
0.198CysHis: 0.198 ± 0.01
0.146CysIle: 0.146 ± 0.008
0.101CysLys: 0.101 ± 0.008
0.703CysLeu: 0.703 ± 0.019
0.116CysMet: 0.116 ± 0.007
0.118CysAsn: 0.118 ± 0.009
0.473CysPro: 0.473 ± 0.015
0.134CysGln: 0.134 ± 0.009
0.62CysArg: 0.62 ± 0.017
0.417CysSer: 0.417 ± 0.014
0.502CysThr: 0.502 ± 0.016
0.662CysVal: 0.662 ± 0.02
0.136CysTrp: 0.136 ± 0.009
0.148CysTyr: 0.148 ± 0.008
0.0CysXaa: 0.0 ± 0.0
Asp
7.637AspAla: 7.637 ± 0.076
0.42AspCys: 0.42 ± 0.017
3.859AspAsp: 3.859 ± 0.056
4.122AspGlu: 4.122 ± 0.058
1.654AspPhe: 1.654 ± 0.031
6.959AspGly: 6.959 ± 0.074
1.505AspHis: 1.505 ± 0.03
1.781AspIle: 1.781 ± 0.034
1.153AspLys: 1.153 ± 0.031
6.322AspLeu: 6.322 ± 0.055
0.805AspMet: 0.805 ± 0.02
0.923AspAsn: 0.923 ± 0.025
4.668AspPro: 4.668 ± 0.049
1.425AspGln: 1.425 ± 0.03
5.277AspArg: 5.277 ± 0.068
2.519AspSer: 2.519 ± 0.04
3.457AspThr: 3.457 ± 0.044
4.829AspVal: 4.829 ± 0.054
0.995AspTrp: 0.995 ± 0.023
1.084AspTyr: 1.084 ± 0.027
0.0AspXaa: 0.0 ± 0.0
Glu
7.756GluAla: 7.756 ± 0.093
0.363GluCys: 0.363 ± 0.013
3.117GluAsp: 3.117 ± 0.041
4.037GluGlu: 4.037 ± 0.066
1.463GluPhe: 1.463 ± 0.028
4.736GluGly: 4.736 ± 0.051
1.656GluHis: 1.656 ± 0.032
2.304GluIle: 2.304 ± 0.032
1.582GluLys: 1.582 ± 0.033
6.645GluLeu: 6.645 ± 0.072
0.865GluMet: 0.865 ± 0.023
1.092GluAsn: 1.092 ± 0.029
3.6GluPro: 3.6 ± 0.059
2.301GluGln: 2.301 ± 0.044
5.784GluArg: 5.784 ± 0.069
2.615GluSer: 2.615 ± 0.037
3.034GluThr: 3.034 ± 0.041
4.657GluVal: 4.657 ± 0.06
0.764GluTrp: 0.764 ± 0.022
1.167GluTyr: 1.167 ± 0.025
0.0GluXaa: 0.0 ± 0.0
Phe
3.508PheAla: 3.508 ± 0.05
0.245PheCys: 0.245 ± 0.011
1.977PheAsp: 1.977 ± 0.035
1.482PheGlu: 1.482 ± 0.029
0.85PhePhe: 0.85 ± 0.027
2.998PheGly: 2.998 ± 0.044
0.621PheHis: 0.621 ± 0.018
0.651PheIle: 0.651 ± 0.022
0.479PheLys: 0.479 ± 0.015
2.63PheLeu: 2.63 ± 0.039
0.407PheMet: 0.407 ± 0.013
0.53PheAsn: 0.53 ± 0.018
1.394PhePro: 1.394 ± 0.025
0.623PheGln: 0.623 ± 0.018
1.888PheArg: 1.888 ± 0.029
1.398PheSer: 1.398 ± 0.03
2.081PheThr: 2.081 ± 0.036
2.216PheVal: 2.216 ± 0.034
0.405PheTrp: 0.405 ± 0.014
0.563PheTyr: 0.563 ± 0.015
0.0PheXaa: 0.0 ± 0.0
Gly
11.336GlyAla: 11.336 ± 0.093
0.784GlyCys: 0.784 ± 0.02
5.605GlyAsp: 5.605 ± 0.063
5.48GlyGlu: 5.48 ± 0.062
2.92GlyPhe: 2.92 ± 0.04
9.428GlyGly: 9.428 ± 0.098
2.425GlyHis: 2.425 ± 0.035
3.341GlyIle: 3.341 ± 0.044
2.391GlyLys: 2.391 ± 0.048
9.434GlyLeu: 9.434 ± 0.082
1.999GlyMet: 1.999 ± 0.037
1.787GlyAsn: 1.787 ± 0.039
5.711GlyPro: 5.711 ± 0.074
2.568GlyGln: 2.568 ± 0.043
8.331GlyArg: 8.331 ± 0.076
5.422GlySer: 5.422 ± 0.059
6.906GlyThr: 6.906 ± 0.063
7.618GlyVal: 7.618 ± 0.066
1.643GlyTrp: 1.643 ± 0.03
2.197GlyTyr: 2.197 ± 0.037
0.0GlyXaa: 0.0 ± 0.0
His
2.718HisAla: 2.718 ± 0.036
0.219HisCys: 0.219 ± 0.011
1.435HisAsp: 1.435 ± 0.031
1.275HisGlu: 1.275 ± 0.028
0.632HisPhe: 0.632 ± 0.015
2.559HisGly: 2.559 ± 0.039
0.725HisHis: 0.725 ± 0.023
0.647HisIle: 0.647 ± 0.019
0.36HisLys: 0.36 ± 0.013
2.502HisLeu: 2.502 ± 0.042
0.326HisMet: 0.326 ± 0.013
0.357HisAsn: 0.357 ± 0.014
1.859HisPro: 1.859 ± 0.033
0.624HisGln: 0.624 ± 0.019
2.319HisArg: 2.319 ± 0.035
0.992HisSer: 0.992 ± 0.021
1.412HisThr: 1.412 ± 0.028
1.737HisVal: 1.737 ± 0.028
0.368HisTrp: 0.368 ± 0.013
0.477HisTyr: 0.477 ± 0.015
0.0HisXaa: 0.0 ± 0.0
Ile
4.382IleAla: 4.382 ± 0.054
0.265IleCys: 0.265 ± 0.012
2.142IleAsp: 2.142 ± 0.038
1.937IleGlu: 1.937 ± 0.032
0.63IlePhe: 0.63 ± 0.02
3.404IleGly: 3.404 ± 0.049
0.586IleHis: 0.586 ± 0.017
0.816IleIle: 0.816 ± 0.023
0.693IleLys: 0.693 ± 0.021
2.266IleLeu: 2.266 ± 0.037
0.431IleMet: 0.431 ± 0.017
0.637IleAsn: 0.637 ± 0.017
1.657IlePro: 1.657 ± 0.029
0.669IleGln: 0.669 ± 0.021
2.16IleArg: 2.16 ± 0.029
1.455IleSer: 1.455 ± 0.029
2.094IleThr: 2.094 ± 0.034
2.584IleVal: 2.584 ± 0.042
0.33IleTrp: 0.33 ± 0.014
0.458IleTyr: 0.458 ± 0.017
0.0IleXaa: 0.0 ± 0.0
Lys
2.867LysAla: 2.867 ± 0.05
0.103LysCys: 0.103 ± 0.007
1.358LysAsp: 1.358 ± 0.039
1.266LysGlu: 1.266 ± 0.03
0.434LysPhe: 0.434 ± 0.016
1.868LysGly: 1.868 ± 0.038
0.438LysHis: 0.438 ± 0.014
0.796LysIle: 0.796 ± 0.025
0.898LysLys: 0.898 ± 0.037
1.91LysLeu: 1.91 ± 0.036
0.364LysMet: 0.364 ± 0.015
0.533LysAsn: 0.533 ± 0.018
1.282LysPro: 1.282 ± 0.033
0.662LysGln: 0.662 ± 0.021
1.472LysArg: 1.472 ± 0.03
1.079LysSer: 1.079 ± 0.028
1.278LysThr: 1.278 ± 0.033
1.802LysVal: 1.802 ± 0.033
0.257LysTrp: 0.257 ± 0.011
0.436LysTyr: 0.436 ± 0.016
0.0LysXaa: 0.0 ± 0.0
Leu
14.508LeuAla: 14.508 ± 0.114
0.818LeuCys: 0.818 ± 0.019
6.792LeuAsp: 6.792 ± 0.066
5.067LeuGlu: 5.067 ± 0.059
2.564LeuPhe: 2.564 ± 0.042
9.096LeuGly: 9.096 ± 0.082
2.306LeuHis: 2.306 ± 0.037
3.129LeuIle: 3.129 ± 0.047
2.007LeuLys: 2.007 ± 0.038
11.353LeuLeu: 11.353 ± 0.11
1.611LeuMet: 1.611 ± 0.03
1.652LeuAsn: 1.652 ± 0.031
6.539LeuPro: 6.539 ± 0.065
2.058LeuGln: 2.058 ± 0.034
8.803LeuArg: 8.803 ± 0.087
5.193LeuSer: 5.193 ± 0.061
6.949LeuThr: 6.949 ± 0.07
8.76LeuVal: 8.76 ± 0.08
1.256LeuTrp: 1.256 ± 0.024
1.817LeuTyr: 1.817 ± 0.028
0.0LeuXaa: 0.0 ± 0.0
Met
2.154MetAla: 2.154 ± 0.032
0.135MetCys: 0.135 ± 0.009
0.908MetAsp: 0.908 ± 0.021
0.806MetGlu: 0.806 ± 0.021
0.462MetPhe: 0.462 ± 0.016
1.307MetGly: 1.307 ± 0.026
0.339MetHis: 0.339 ± 0.013
0.642MetIle: 0.642 ± 0.019
0.416MetLys: 0.416 ± 0.016
1.659MetLeu: 1.659 ± 0.027
0.285MetMet: 0.285 ± 0.014
0.439MetAsn: 0.439 ± 0.014
1.102MetPro: 1.102 ± 0.026
0.406MetGln: 0.406 ± 0.013
1.452MetArg: 1.452 ± 0.026
1.277MetSer: 1.277 ± 0.025
1.526MetThr: 1.526 ± 0.028
1.233MetVal: 1.233 ± 0.029
0.21MetTrp: 0.21 ± 0.01
0.299MetTyr: 0.299 ± 0.014
0.0MetXaa: 0.0 ± 0.0
Asn
2.069AsnAla: 2.069 ± 0.044
0.161AsnCys: 0.161 ± 0.01
0.941AsnAsp: 0.941 ± 0.022
0.817AsnGlu: 0.817 ± 0.021
0.464AsnPhe: 0.464 ± 0.017
1.871AsnGly: 1.871 ± 0.037
0.398AsnHis: 0.398 ± 0.017
0.624AsnIle: 0.624 ± 0.02
0.396AsnLys: 0.396 ± 0.016
1.572AsnLeu: 1.572 ± 0.03
0.301AsnMet: 0.301 ± 0.012
0.396AsnAsn: 0.396 ± 0.016
1.273AsnPro: 1.273 ± 0.029
0.496AsnGln: 0.496 ± 0.016
1.306AsnArg: 1.306 ± 0.024
0.867AsnSer: 0.867 ± 0.024
1.091AsnThr: 1.091 ± 0.025
1.339AsnVal: 1.339 ± 0.023
0.286AsnTrp: 0.286 ± 0.014
0.374AsnTyr: 0.374 ± 0.016
0.0AsnXaa: 0.0 ± 0.0
Pro
9.101ProAla: 9.101 ± 0.09
0.338ProCys: 0.338 ± 0.013
4.686ProAsp: 4.686 ± 0.056
4.553ProGlu: 4.553 ± 0.062
1.593ProPhe: 1.593 ± 0.028
7.224ProGly: 7.224 ± 0.083
1.491ProHis: 1.491 ± 0.031
1.084ProIle: 1.084 ± 0.029
1.096ProLys: 1.096 ± 0.026
5.354ProLeu: 5.354 ± 0.063
0.983ProMet: 0.983 ± 0.021
0.831ProAsn: 0.831 ± 0.024
3.781ProPro: 3.781 ± 0.073
1.648ProGln: 1.648 ± 0.034
4.305ProArg: 4.305 ± 0.056
3.314ProSer: 3.314 ± 0.045
2.956ProThr: 2.956 ± 0.046
5.765ProVal: 5.765 ± 0.061
0.884ProTrp: 0.884 ± 0.022
1.371ProTyr: 1.371 ± 0.028
0.0ProXaa: 0.0 ± 0.0
Gln
3.446GlnAla: 3.446 ± 0.05
0.158GlnCys: 0.158 ± 0.009
1.442GlnAsp: 1.442 ± 0.03
1.515GlnGlu: 1.515 ± 0.03
0.626GlnPhe: 0.626 ± 0.017
2.244GlnGly: 2.244 ± 0.042
0.635GlnHis: 0.635 ± 0.017
0.946GlnIle: 0.946 ± 0.023
0.62GlnLys: 0.62 ± 0.02
2.711GlnLeu: 2.711 ± 0.037
0.473GlnMet: 0.473 ± 0.018
0.496GlnAsn: 0.496 ± 0.017
1.563GlnPro: 1.563 ± 0.036
1.174GlnGln: 1.174 ± 0.036
2.3GlnArg: 2.3 ± 0.036
1.136GlnSer: 1.136 ± 0.024
1.215GlnThr: 1.215 ± 0.028
2.254GlnVal: 2.254 ± 0.035
0.434GlnTrp: 0.434 ± 0.016
0.581GlnTyr: 0.581 ± 0.02
0.0GlnXaa: 0.0 ± 0.0
Arg
10.188ArgAla: 10.188 ± 0.094
0.582ArgCys: 0.582 ± 0.02
4.507ArgAsp: 4.507 ± 0.051
5.096ArgGlu: 5.096 ± 0.055
2.393ArgPhe: 2.393 ± 0.033
6.248ArgGly: 6.248 ± 0.058
2.227ArgHis: 2.227 ± 0.038
3.211ArgIle: 3.211 ± 0.044
1.697ArgLys: 1.697 ± 0.033
9.107ArgLeu: 9.107 ± 0.086
1.829ArgMet: 1.829 ± 0.028
1.374ArgAsn: 1.374 ± 0.025
5.315ArgPro: 5.315 ± 0.062
2.297ArgGln: 2.297 ± 0.039
8.163ArgArg: 8.163 ± 0.085
4.241ArgSer: 4.241 ± 0.054
5.76ArgThr: 5.76 ± 0.065
6.173ArgVal: 6.173 ± 0.057
1.37ArgTrp: 1.37 ± 0.028
1.788ArgTyr: 1.788 ± 0.031
0.0ArgXaa: 0.0 ± 0.0
Ser
6.495SerAla: 6.495 ± 0.066
0.38SerCys: 0.38 ± 0.015
2.65SerAsp: 2.65 ± 0.033
2.434SerGlu: 2.434 ± 0.036
1.514SerPhe: 1.514 ± 0.03
6.06SerGly: 6.06 ± 0.056
1.02SerHis: 1.02 ± 0.022
1.268SerIle: 1.268 ± 0.026
0.986SerLys: 0.986 ± 0.026
4.768SerLeu: 4.768 ± 0.054
1.041SerMet: 1.041 ± 0.021
0.786SerAsn: 0.786 ± 0.023
3.209SerPro: 3.209 ± 0.044
1.135SerGln: 1.135 ± 0.027
3.777SerArg: 3.777 ± 0.046
2.823SerSer: 2.823 ± 0.051
3.092SerThr: 3.092 ± 0.047
4.266SerVal: 4.266 ± 0.044
0.855SerTrp: 0.855 ± 0.021
1.17SerTyr: 1.17 ± 0.025
0.0SerXaa: 0.0 ± 0.0
Thr
9.042ThrAla: 9.042 ± 0.078
0.43ThrCys: 0.43 ± 0.016
3.796ThrAsp: 3.796 ± 0.05
3.429ThrGlu: 3.429 ± 0.047
1.58ThrPhe: 1.58 ± 0.027
7.217ThrGly: 7.217 ± 0.07
1.254ThrHis: 1.254 ± 0.027
1.472ThrIle: 1.472 ± 0.03
1.077ThrLys: 1.077 ± 0.027
5.687ThrLeu: 5.687 ± 0.051
0.91ThrMet: 0.91 ± 0.02
0.937ThrAsn: 0.937 ± 0.027
4.184ThrPro: 4.184 ± 0.057
1.241ThrGln: 1.241 ± 0.027
4.193ThrArg: 4.193 ± 0.043
3.053ThrSer: 3.053 ± 0.049
3.812ThrThr: 3.812 ± 0.054
6.308ThrVal: 6.308 ± 0.068
0.897ThrTrp: 0.897 ± 0.022
1.308ThrTyr: 1.308 ± 0.029
0.0ThrXaa: 0.0 ± 0.0
Val
10.242ValAla: 10.242 ± 0.077
0.747ValCys: 0.747 ± 0.021
5.099ValAsp: 5.099 ± 0.061
4.937ValGlu: 4.937 ± 0.058
2.416ValPhe: 2.416 ± 0.038
6.409ValGly: 6.409 ± 0.061
2.057ValHis: 2.057 ± 0.033
2.735ValIle: 2.735 ± 0.044
1.753ValLys: 1.753 ± 0.038
9.715ValLeu: 9.715 ± 0.09
1.421ValMet: 1.421 ± 0.03
1.595ValAsn: 1.595 ± 0.032
5.605ValPro: 5.605 ± 0.062
1.955ValGln: 1.955 ± 0.035
7.671ValArg: 7.671 ± 0.078
4.228ValSer: 4.228 ± 0.044
5.712ValThr: 5.712 ± 0.06
8.153ValVal: 8.153 ± 0.089
1.138ValTrp: 1.138 ± 0.021
1.551ValTyr: 1.551 ± 0.03
0.0ValXaa: 0.0 ± 0.0
Trp
1.591TrpAla: 1.591 ± 0.027
0.148TrpCys: 0.148 ± 0.009
0.8TrpAsp: 0.8 ± 0.02
0.734TrpGlu: 0.734 ± 0.019
0.515TrpPhe: 0.515 ± 0.015
1.052TrpGly: 1.052 ± 0.023
0.338TrpHis: 0.338 ± 0.014
0.541TrpIle: 0.541 ± 0.016
0.369TrpLys: 0.369 ± 0.017
1.664TrpLeu: 1.664 ± 0.032
0.28TrpMet: 0.28 ± 0.013
0.419TrpAsn: 0.419 ± 0.015
0.758TrpPro: 0.758 ± 0.021
0.592TrpGln: 0.592 ± 0.018
1.315TrpArg: 1.315 ± 0.029
0.891TrpSer: 0.891 ± 0.025
1.05TrpThr: 1.05 ± 0.024
0.917TrpVal: 0.917 ± 0.022
0.329TrpTrp: 0.329 ± 0.014
0.363TrpTyr: 0.363 ± 0.014
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.682TyrAla: 2.682 ± 0.039
0.168TyrCys: 0.168 ± 0.008
1.548TyrAsp: 1.548 ± 0.031
1.284TyrGlu: 1.284 ± 0.027
0.621TyrPhe: 0.621 ± 0.018
2.27TyrGly: 2.27 ± 0.034
0.392TyrHis: 0.392 ± 0.015
0.462TyrIle: 0.462 ± 0.017
0.379TyrLys: 0.379 ± 0.016
2.021TyrLeu: 2.021 ± 0.041
0.248TyrMet: 0.248 ± 0.011
0.366TyrAsn: 0.366 ± 0.017
0.993TyrPro: 0.993 ± 0.023
0.559TyrGln: 0.559 ± 0.016
1.81TyrArg: 1.81 ± 0.032
0.915TyrSer: 0.915 ± 0.021
1.178TyrThr: 1.178 ± 0.025
1.645TyrVal: 1.645 ± 0.031
0.313TyrTrp: 0.313 ± 0.013
0.44TyrTyr: 0.44 ± 0.017
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 6118 proteins (2010856 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