Amino acid dipepetide frequency for Nocardiopsis sp. CNR-923

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
18.093AlaAla: 18.093 ± 0.209
1.118AlaCys: 1.118 ± 0.033
8.385AlaAsp: 8.385 ± 0.098
8.984AlaGlu: 8.984 ± 0.112
3.456AlaPhe: 3.456 ± 0.063
10.817AlaGly: 10.817 ± 0.136
3.066AlaHis: 3.066 ± 0.06
3.463AlaIle: 3.463 ± 0.063
2.032AlaLys: 2.032 ± 0.046
13.931AlaLeu: 13.931 ± 0.149
2.576AlaMet: 2.576 ± 0.047
1.883AlaAsn: 1.883 ± 0.038
6.752AlaPro: 6.752 ± 0.098
3.367AlaGln: 3.367 ± 0.063
11.139AlaArg: 11.139 ± 0.138
6.029AlaSer: 6.029 ± 0.075
6.426AlaThr: 6.426 ± 0.081
11.956AlaVal: 11.956 ± 0.147
2.001AlaTrp: 2.001 ± 0.042
2.42AlaTyr: 2.42 ± 0.052
0.0AlaXaa: 0.0 ± 0.0
Cys
1.137CysAla: 1.137 ± 0.035
0.104CysCys: 0.104 ± 0.01
0.545CysAsp: 0.545 ± 0.023
0.448CysGlu: 0.448 ± 0.022
0.21CysPhe: 0.21 ± 0.015
0.947CysGly: 0.947 ± 0.032
0.213CysHis: 0.213 ± 0.011
0.111CysIle: 0.111 ± 0.008
0.078CysLys: 0.078 ± 0.008
0.714CysLeu: 0.714 ± 0.027
0.126CysMet: 0.126 ± 0.011
0.117CysAsn: 0.117 ± 0.011
0.568CysPro: 0.568 ± 0.024
0.206CysGln: 0.206 ± 0.013
0.662CysArg: 0.662 ± 0.026
0.495CysSer: 0.495 ± 0.026
0.452CysThr: 0.452 ± 0.022
0.785CysVal: 0.785 ± 0.029
0.139CysTrp: 0.139 ± 0.011
0.143CysTyr: 0.143 ± 0.011
0.0CysXaa: 0.0 ± 0.0
Asp
7.645AspAla: 7.645 ± 0.102
0.402AspCys: 0.402 ± 0.019
4.158AspAsp: 4.158 ± 0.073
4.372AspGlu: 4.372 ± 0.076
1.628AspPhe: 1.628 ± 0.043
6.263AspGly: 6.263 ± 0.096
1.742AspHis: 1.742 ± 0.046
1.841AspIle: 1.841 ± 0.049
0.864AspLys: 0.864 ± 0.033
7.102AspLeu: 7.102 ± 0.079
1.008AspMet: 1.008 ± 0.032
0.898AspAsn: 0.898 ± 0.03
4.884AspPro: 4.884 ± 0.082
1.803AspGln: 1.803 ± 0.049
5.796AspArg: 5.796 ± 0.084
2.575AspSer: 2.575 ± 0.057
3.489AspThr: 3.489 ± 0.07
5.275AspVal: 5.275 ± 0.07
0.943AspTrp: 0.943 ± 0.033
1.198AspTyr: 1.198 ± 0.036
0.0AspXaa: 0.0 ± 0.0
Glu
7.869GluAla: 7.869 ± 0.103
0.435GluCys: 0.435 ± 0.023
3.627GluAsp: 3.627 ± 0.067
4.564GluGlu: 4.564 ± 0.085
1.726GluPhe: 1.726 ± 0.042
5.207GluGly: 5.207 ± 0.081
1.957GluHis: 1.957 ± 0.046
2.517GluIle: 2.517 ± 0.052
1.02GluLys: 1.02 ± 0.038
6.671GluLeu: 6.671 ± 0.093
1.079GluMet: 1.079 ± 0.036
1.145GluAsn: 1.145 ± 0.035
3.577GluPro: 3.577 ± 0.067
2.074GluGln: 2.074 ± 0.049
6.681GluArg: 6.681 ± 0.091
2.976GluSer: 2.976 ± 0.061
3.046GluThr: 3.046 ± 0.055
5.009GluVal: 5.009 ± 0.073
0.961GluTrp: 0.961 ± 0.036
1.228GluTyr: 1.228 ± 0.034
0.0GluXaa: 0.0 ± 0.0
Phe
3.527PheAla: 3.527 ± 0.067
0.221PheCys: 0.221 ± 0.013
2.179PheAsp: 2.179 ± 0.047
1.488PheGlu: 1.488 ± 0.043
0.77PhePhe: 0.77 ± 0.03
3.001PheGly: 3.001 ± 0.053
0.668PheHis: 0.668 ± 0.023
0.644PheIle: 0.644 ± 0.026
0.347PheLys: 0.347 ± 0.019
2.671PheLeu: 2.671 ± 0.055
0.405PheMet: 0.405 ± 0.019
0.5PheAsn: 0.5 ± 0.023
1.401PhePro: 1.401 ± 0.04
0.625PheGln: 0.625 ± 0.028
1.772PheArg: 1.772 ± 0.04
1.415PheSer: 1.415 ± 0.04
2.015PheThr: 2.015 ± 0.04
2.45PheVal: 2.45 ± 0.057
0.391PheTrp: 0.391 ± 0.022
0.515PheTyr: 0.515 ± 0.023
0.0PheXaa: 0.0 ± 0.0
Gly
10.782GlyAla: 10.782 ± 0.128
0.812GlyCys: 0.812 ± 0.033
5.545GlyAsp: 5.545 ± 0.075
5.671GlyGlu: 5.671 ± 0.078
2.798GlyPhe: 2.798 ± 0.052
8.668GlyGly: 8.668 ± 0.109
2.322GlyHis: 2.322 ± 0.054
2.977GlyIle: 2.977 ± 0.063
1.662GlyLys: 1.662 ± 0.051
9.086GlyLeu: 9.086 ± 0.118
2.087GlyMet: 2.087 ± 0.051
1.537GlyAsn: 1.537 ± 0.047
4.974GlyPro: 4.974 ± 0.073
2.639GlyGln: 2.639 ± 0.052
8.13GlyArg: 8.13 ± 0.093
4.904GlySer: 4.904 ± 0.074
5.366GlyThr: 5.366 ± 0.077
8.199GlyVal: 8.199 ± 0.096
1.604GlyTrp: 1.604 ± 0.046
2.197GlyTyr: 2.197 ± 0.048
0.0GlyXaa: 0.0 ± 0.0
His
2.85HisAla: 2.85 ± 0.055
0.197HisCys: 0.197 ± 0.012
1.47HisAsp: 1.47 ± 0.042
1.388HisGlu: 1.388 ± 0.038
0.576HisPhe: 0.576 ± 0.022
2.494HisGly: 2.494 ± 0.048
0.783HisHis: 0.783 ± 0.029
0.643HisIle: 0.643 ± 0.026
0.331HisLys: 0.331 ± 0.017
2.608HisLeu: 2.608 ± 0.05
0.383HisMet: 0.383 ± 0.018
0.389HisAsn: 0.389 ± 0.022
1.866HisPro: 1.866 ± 0.043
0.717HisGln: 0.717 ± 0.029
2.292HisArg: 2.292 ± 0.045
1.045HisSer: 1.045 ± 0.028
1.439HisThr: 1.439 ± 0.039
2.074HisVal: 2.074 ± 0.049
0.345HisTrp: 0.345 ± 0.019
0.446HisTyr: 0.446 ± 0.022
0.0HisXaa: 0.0 ± 0.0
Ile
4.503IleAla: 4.503 ± 0.074
0.253IleCys: 0.253 ± 0.016
2.352IleAsp: 2.352 ± 0.056
2.061IleGlu: 2.061 ± 0.044
0.6IlePhe: 0.6 ± 0.031
3.206IleGly: 3.206 ± 0.061
0.587IleHis: 0.587 ± 0.025
1.0IleIle: 1.0 ± 0.034
0.5IleLys: 0.5 ± 0.025
2.507IleLeu: 2.507 ± 0.056
0.45IleMet: 0.45 ± 0.022
0.669IleAsn: 0.669 ± 0.026
1.705IlePro: 1.705 ± 0.046
0.714IleGln: 0.714 ± 0.028
2.396IleArg: 2.396 ± 0.055
1.646IleSer: 1.646 ± 0.046
2.156IleThr: 2.156 ± 0.048
2.793IleVal: 2.793 ± 0.059
0.332IleTrp: 0.332 ± 0.02
0.461IleTyr: 0.461 ± 0.023
0.0IleXaa: 0.0 ± 0.0
Lys
1.904LysAla: 1.904 ± 0.051
0.083LysCys: 0.083 ± 0.009
0.918LysAsp: 0.918 ± 0.035
1.04LysGlu: 1.04 ± 0.04
0.31LysPhe: 0.31 ± 0.017
1.314LysGly: 1.314 ± 0.044
0.402LysHis: 0.402 ± 0.021
0.591LysIle: 0.591 ± 0.023
0.526LysLys: 0.526 ± 0.026
1.473LysLeu: 1.473 ± 0.038
0.303LysMet: 0.303 ± 0.014
0.329LysAsn: 0.329 ± 0.02
0.932LysPro: 0.932 ± 0.037
0.464LysGln: 0.464 ± 0.025
1.403LysArg: 1.403 ± 0.041
0.869LysSer: 0.869 ± 0.03
0.837LysThr: 0.837 ± 0.03
1.341LysVal: 1.341 ± 0.039
0.164LysTrp: 0.164 ± 0.013
0.289LysTyr: 0.289 ± 0.018
0.0LysXaa: 0.0 ± 0.0
Leu
14.363LeuAla: 14.363 ± 0.15
0.862LeuCys: 0.862 ± 0.032
6.693LeuAsp: 6.693 ± 0.089
5.174LeuGlu: 5.174 ± 0.071
2.698LeuPhe: 2.698 ± 0.056
9.088LeuGly: 9.088 ± 0.115
2.228LeuHis: 2.228 ± 0.051
3.036LeuIle: 3.036 ± 0.062
1.339LeuLys: 1.339 ± 0.037
10.64LeuLeu: 10.64 ± 0.135
1.777LeuMet: 1.777 ± 0.042
1.636LeuAsn: 1.636 ± 0.038
6.148LeuPro: 6.148 ± 0.078
1.879LeuGln: 1.879 ± 0.047
9.208LeuArg: 9.208 ± 0.118
5.621LeuSer: 5.621 ± 0.071
6.568LeuThr: 6.568 ± 0.083
9.566LeuVal: 9.566 ± 0.117
1.423LeuTrp: 1.423 ± 0.044
1.768LeuTyr: 1.768 ± 0.044
0.0LeuXaa: 0.0 ± 0.0
Met
2.515MetAla: 2.515 ± 0.05
0.14MetCys: 0.14 ± 0.011
1.074MetAsp: 1.074 ± 0.035
0.956MetGlu: 0.956 ± 0.033
0.529MetPhe: 0.529 ± 0.025
1.48MetGly: 1.48 ± 0.042
0.33MetHis: 0.33 ± 0.02
0.692MetIle: 0.692 ± 0.024
0.324MetLys: 0.324 ± 0.019
1.727MetLeu: 1.727 ± 0.043
0.295MetMet: 0.295 ± 0.019
0.458MetAsn: 0.458 ± 0.022
1.142MetPro: 1.142 ± 0.034
0.348MetGln: 0.348 ± 0.016
1.657MetArg: 1.657 ± 0.037
1.521MetSer: 1.521 ± 0.035
1.538MetThr: 1.538 ± 0.038
1.599MetVal: 1.599 ± 0.041
0.234MetTrp: 0.234 ± 0.014
0.296MetTyr: 0.296 ± 0.017
0.0MetXaa: 0.0 ± 0.0
Asn
2.042AsnAla: 2.042 ± 0.043
0.132AsnCys: 0.132 ± 0.011
0.953AsnAsp: 0.953 ± 0.032
0.961AsnGlu: 0.961 ± 0.03
0.391AsnPhe: 0.391 ± 0.022
1.743AsnGly: 1.743 ± 0.051
0.374AsnHis: 0.374 ± 0.02
0.607AsnIle: 0.607 ± 0.025
0.315AsnLys: 0.315 ± 0.016
1.662AsnLeu: 1.662 ± 0.049
0.301AsnMet: 0.301 ± 0.017
0.359AsnAsn: 0.359 ± 0.024
1.338AsnPro: 1.338 ± 0.045
0.542AsnGln: 0.542 ± 0.024
1.39AsnArg: 1.39 ± 0.038
0.813AsnSer: 0.813 ± 0.032
1.057AsnThr: 1.057 ± 0.034
1.376AsnVal: 1.376 ± 0.038
0.27AsnTrp: 0.27 ± 0.018
0.348AsnTyr: 0.348 ± 0.016
0.0AsnXaa: 0.0 ± 0.0
Pro
6.71ProAla: 6.71 ± 0.095
0.409ProCys: 0.409 ± 0.02
4.766ProAsp: 4.766 ± 0.063
4.914ProGlu: 4.914 ± 0.075
1.551ProPhe: 1.551 ± 0.036
6.333ProGly: 6.333 ± 0.077
1.479ProHis: 1.479 ± 0.041
1.477ProIle: 1.477 ± 0.034
0.893ProLys: 0.893 ± 0.031
5.056ProLeu: 5.056 ± 0.079
1.04ProMet: 1.04 ± 0.033
0.965ProAsn: 0.965 ± 0.03
3.544ProPro: 3.544 ± 0.082
1.431ProGln: 1.431 ± 0.042
4.604ProArg: 4.604 ± 0.071
3.406ProSer: 3.406 ± 0.065
3.446ProThr: 3.446 ± 0.06
5.487ProVal: 5.487 ± 0.078
1.046ProTrp: 1.046 ± 0.037
1.15ProTyr: 1.15 ± 0.032
0.0ProXaa: 0.0 ± 0.0
Gln
3.291GlnAla: 3.291 ± 0.063
0.172GlnCys: 0.172 ± 0.012
1.324GlnAsp: 1.324 ± 0.04
1.627GlnGlu: 1.627 ± 0.045
0.587GlnPhe: 0.587 ± 0.025
2.157GlnGly: 2.157 ± 0.047
0.611GlnHis: 0.611 ± 0.027
1.096GlnIle: 1.096 ± 0.037
0.381GlnLys: 0.381 ± 0.019
2.494GlnLeu: 2.494 ± 0.053
0.514GlnMet: 0.514 ± 0.02
0.489GlnAsn: 0.489 ± 0.023
1.367GlnPro: 1.367 ± 0.04
0.866GlnGln: 0.866 ± 0.038
2.513GlnArg: 2.513 ± 0.057
1.172GlnSer: 1.172 ± 0.03
1.394GlnThr: 1.394 ± 0.034
2.38GlnVal: 2.38 ± 0.048
0.437GlnTrp: 0.437 ± 0.02
0.447GlnTyr: 0.447 ± 0.02
0.0GlnXaa: 0.0 ± 0.0
Arg
11.078ArgAla: 11.078 ± 0.143
0.72ArgCys: 0.72 ± 0.027
5.142ArgAsp: 5.142 ± 0.085
5.577ArgGlu: 5.577 ± 0.097
2.437ArgPhe: 2.437 ± 0.046
6.746ArgGly: 6.746 ± 0.093
2.218ArgHis: 2.218 ± 0.056
3.194ArgIle: 3.194 ± 0.062
1.426ArgLys: 1.426 ± 0.041
9.153ArgLeu: 9.153 ± 0.109
2.136ArgMet: 2.136 ± 0.047
1.392ArgAsn: 1.392 ± 0.037
5.133ArgPro: 5.133 ± 0.079
2.187ArgGln: 2.187 ± 0.046
8.877ArgArg: 8.877 ± 0.123
4.858ArgSer: 4.858 ± 0.071
5.299ArgThr: 5.299 ± 0.082
7.483ArgVal: 7.483 ± 0.094
1.632ArgTrp: 1.632 ± 0.039
1.896ArgTyr: 1.896 ± 0.051
0.0ArgXaa: 0.0 ± 0.0
Ser
6.717SerAla: 6.717 ± 0.089
0.452SerCys: 0.452 ± 0.023
3.131SerAsp: 3.131 ± 0.07
2.98SerGlu: 2.98 ± 0.052
1.418SerPhe: 1.418 ± 0.038
5.91SerGly: 5.91 ± 0.08
1.124SerHis: 1.124 ± 0.035
1.452SerIle: 1.452 ± 0.038
0.81SerLys: 0.81 ± 0.03
4.789SerLeu: 4.789 ± 0.075
1.154SerMet: 1.154 ± 0.034
0.815SerAsn: 0.815 ± 0.029
3.274SerPro: 3.274 ± 0.063
1.214SerGln: 1.214 ± 0.038
4.057SerArg: 4.057 ± 0.072
2.987SerSer: 2.987 ± 0.068
3.178SerThr: 3.178 ± 0.059
4.587SerVal: 4.587 ± 0.067
0.947SerTrp: 0.947 ± 0.028
1.111SerTyr: 1.111 ± 0.035
0.0SerXaa: 0.0 ± 0.0
Thr
7.769ThrAla: 7.769 ± 0.096
0.458ThrCys: 0.458 ± 0.022
3.703ThrAsp: 3.703 ± 0.06
3.46ThrGlu: 3.46 ± 0.061
1.521ThrPhe: 1.521 ± 0.037
6.267ThrGly: 6.267 ± 0.07
1.297ThrHis: 1.297 ± 0.034
1.584ThrIle: 1.584 ± 0.044
0.858ThrLys: 0.858 ± 0.035
5.548ThrLeu: 5.548 ± 0.075
1.076ThrMet: 1.076 ± 0.033
0.981ThrAsn: 0.981 ± 0.028
4.027ThrPro: 4.027 ± 0.078
1.273ThrGln: 1.273 ± 0.038
4.526ThrArg: 4.526 ± 0.074
3.048ThrSer: 3.048 ± 0.053
3.515ThrThr: 3.515 ± 0.068
5.836ThrVal: 5.836 ± 0.076
0.912ThrTrp: 0.912 ± 0.034
1.063ThrTyr: 1.063 ± 0.03
0.0ThrXaa: 0.0 ± 0.0
Val
11.028ValAla: 11.028 ± 0.116
0.875ValCys: 0.875 ± 0.032
5.829ValAsp: 5.829 ± 0.086
5.655ValGlu: 5.655 ± 0.08
2.623ValPhe: 2.623 ± 0.06
7.336ValGly: 7.336 ± 0.089
2.108ValHis: 2.108 ± 0.043
2.88ValIle: 2.88 ± 0.062
1.237ValLys: 1.237 ± 0.036
9.946ValLeu: 9.946 ± 0.133
1.555ValMet: 1.555 ± 0.037
1.688ValAsn: 1.688 ± 0.04
5.203ValPro: 5.203 ± 0.074
1.963ValGln: 1.963 ± 0.041
7.979ValArg: 7.979 ± 0.107
4.781ValSer: 4.781 ± 0.068
5.379ValThr: 5.379 ± 0.078
8.683ValVal: 8.683 ± 0.13
1.352ValTrp: 1.352 ± 0.04
1.654ValTyr: 1.654 ± 0.038
0.0ValXaa: 0.0 ± 0.0
Trp
1.729TrpAla: 1.729 ± 0.044
0.18TrpCys: 0.18 ± 0.014
0.848TrpAsp: 0.848 ± 0.031
0.882TrpGlu: 0.882 ± 0.028
0.537TrpPhe: 0.537 ± 0.022
1.113TrpGly: 1.113 ± 0.03
0.394TrpHis: 0.394 ± 0.018
0.637TrpIle: 0.637 ± 0.022
0.261TrpLys: 0.261 ± 0.016
1.726TrpLeu: 1.726 ± 0.045
0.323TrpMet: 0.323 ± 0.017
0.386TrpAsn: 0.386 ± 0.021
0.864TrpPro: 0.864 ± 0.031
0.414TrpGln: 0.414 ± 0.02
1.669TrpArg: 1.669 ± 0.046
1.005TrpSer: 1.005 ± 0.039
0.95TrpThr: 0.95 ± 0.031
1.221TrpVal: 1.221 ± 0.04
0.431TrpTrp: 0.431 ± 0.024
0.309TrpTyr: 0.309 ± 0.021
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.341TyrAla: 2.341 ± 0.045
0.175TyrCys: 0.175 ± 0.015
1.241TyrAsp: 1.241 ± 0.038
1.166TyrGlu: 1.166 ± 0.033
0.639TyrPhe: 0.639 ± 0.031
1.868TyrGly: 1.868 ± 0.05
0.434TyrHis: 0.434 ± 0.02
0.447TyrIle: 0.447 ± 0.022
0.292TyrLys: 0.292 ± 0.018
2.212TyrLeu: 2.212 ± 0.044
0.265TyrMet: 0.265 ± 0.015
0.336TyrAsn: 0.336 ± 0.019
1.011TyrPro: 1.011 ± 0.03
0.594TyrGln: 0.594 ± 0.023
1.835TyrArg: 1.835 ± 0.045
0.942TyrSer: 0.942 ± 0.034
1.171TyrThr: 1.171 ± 0.035
1.654TyrVal: 1.654 ± 0.041
0.317TyrTrp: 0.317 ± 0.017
0.406TyrTyr: 0.406 ± 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 3756 proteins (1021308 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