Amino acid dipepetide frequency for Streptomyces sp. NBRC 110611

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
22.666AlaAla: 22.666 ± 0.182
1.163AlaCys: 1.163 ± 0.023
8.396AlaAsp: 8.396 ± 0.075
9.025AlaGlu: 9.025 ± 0.088
3.507AlaPhe: 3.507 ± 0.045
13.911AlaGly: 13.911 ± 0.11
3.145AlaHis: 3.145 ± 0.043
3.428AlaIle: 3.428 ± 0.046
2.837AlaLys: 2.837 ± 0.052
14.757AlaLeu: 14.757 ± 0.098
2.568AlaMet: 2.568 ± 0.032
1.876AlaAsn: 1.876 ± 0.032
7.886AlaPro: 7.886 ± 0.087
3.892AlaGln: 3.892 ± 0.047
10.851AlaArg: 10.851 ± 0.076
5.63AlaSer: 5.63 ± 0.057
7.102AlaThr: 7.102 ± 0.063
11.986AlaVal: 11.986 ± 0.095
1.788AlaTrp: 1.788 ± 0.03
2.663AlaTyr: 2.663 ± 0.038
0.0AlaXaa: 0.0 ± 0.0
Cys
1.219CysAla: 1.219 ± 0.023
0.117CysCys: 0.117 ± 0.009
0.494CysAsp: 0.494 ± 0.016
0.434CysGlu: 0.434 ± 0.015
0.246CysPhe: 0.246 ± 0.011
1.033CysGly: 1.033 ± 0.023
0.215CysHis: 0.215 ± 0.01
0.207CysIle: 0.207 ± 0.009
0.132CysLys: 0.132 ± 0.008
0.807CysLeu: 0.807 ± 0.019
0.131CysMet: 0.131 ± 0.008
0.138CysAsn: 0.138 ± 0.008
0.575CysPro: 0.575 ± 0.018
0.203CysGln: 0.203 ± 0.01
0.734CysArg: 0.734 ± 0.018
0.479CysSer: 0.479 ± 0.015
0.567CysThr: 0.567 ± 0.017
0.657CysVal: 0.657 ± 0.017
0.14CysTrp: 0.14 ± 0.008
0.17CysTyr: 0.17 ± 0.008
0.0CysXaa: 0.0 ± 0.0
Asp
7.737AspAla: 7.737 ± 0.063
0.438AspCys: 0.438 ± 0.016
3.396AspAsp: 3.396 ± 0.047
3.793AspGlu: 3.793 ± 0.045
1.534AspPhe: 1.534 ± 0.029
6.545AspGly: 6.545 ± 0.066
1.502AspHis: 1.502 ± 0.026
1.834AspIle: 1.834 ± 0.028
1.13AspLys: 1.13 ± 0.031
5.897AspLeu: 5.897 ± 0.061
0.764AspMet: 0.764 ± 0.02
0.899AspAsn: 0.899 ± 0.024
4.331AspPro: 4.331 ± 0.053
1.517AspGln: 1.517 ± 0.025
5.077AspArg: 5.077 ± 0.056
2.363AspSer: 2.363 ± 0.034
3.117AspThr: 3.117 ± 0.039
4.284AspVal: 4.284 ± 0.048
0.966AspTrp: 0.966 ± 0.023
1.064AspTyr: 1.064 ± 0.025
0.0AspXaa: 0.0 ± 0.0
Glu
7.431GluAla: 7.431 ± 0.071
0.414GluCys: 0.414 ± 0.014
2.643GluAsp: 2.643 ± 0.037
3.49GluGlu: 3.49 ± 0.049
1.431GluPhe: 1.431 ± 0.024
4.162GluGly: 4.162 ± 0.05
1.534GluHis: 1.534 ± 0.026
2.226GluIle: 2.226 ± 0.035
1.405GluLys: 1.405 ± 0.037
6.742GluLeu: 6.742 ± 0.07
0.917GluMet: 0.917 ± 0.022
0.957GluAsn: 0.957 ± 0.023
3.404GluPro: 3.404 ± 0.046
2.269GluGln: 2.269 ± 0.031
5.735GluArg: 5.735 ± 0.063
2.474GluSer: 2.474 ± 0.036
2.803GluThr: 2.803 ± 0.034
4.306GluVal: 4.306 ± 0.05
0.773GluTrp: 0.773 ± 0.018
1.017GluTyr: 1.017 ± 0.025
0.0GluXaa: 0.0 ± 0.0
Phe
3.595PheAla: 3.595 ± 0.037
0.265PheCys: 0.265 ± 0.011
1.847PheAsp: 1.847 ± 0.028
1.295PheGlu: 1.295 ± 0.025
0.857PhePhe: 0.857 ± 0.022
2.927PheGly: 2.927 ± 0.04
0.644PheHis: 0.644 ± 0.018
0.721PheIle: 0.721 ± 0.02
0.468PheLys: 0.468 ± 0.015
2.559PheLeu: 2.559 ± 0.036
0.351PheMet: 0.351 ± 0.014
0.525PheAsn: 0.525 ± 0.02
1.442PhePro: 1.442 ± 0.024
0.652PheGln: 0.652 ± 0.019
1.841PheArg: 1.841 ± 0.035
1.444PheSer: 1.444 ± 0.024
1.937PheThr: 1.937 ± 0.027
2.002PheVal: 2.002 ± 0.038
0.389PheTrp: 0.389 ± 0.015
0.539PheTyr: 0.539 ± 0.015
0.0PheXaa: 0.0 ± 0.0
Gly
11.584GlyAla: 11.584 ± 0.089
0.923GlyCys: 0.923 ± 0.021
5.031GlyAsp: 5.031 ± 0.045
5.208GlyGlu: 5.208 ± 0.056
2.755GlyPhe: 2.755 ± 0.035
9.312GlyGly: 9.312 ± 0.091
2.485GlyHis: 2.485 ± 0.036
3.486GlyIle: 3.486 ± 0.043
2.497GlyLys: 2.497 ± 0.047
9.371GlyLeu: 9.371 ± 0.082
2.044GlyMet: 2.044 ± 0.03
1.712GlyAsn: 1.712 ± 0.03
5.834GlyPro: 5.834 ± 0.063
2.772GlyGln: 2.772 ± 0.037
8.408GlyArg: 8.408 ± 0.071
5.351GlySer: 5.351 ± 0.053
6.571GlyThr: 6.571 ± 0.065
7.158GlyVal: 7.158 ± 0.076
1.615GlyTrp: 1.615 ± 0.032
2.157GlyTyr: 2.157 ± 0.036
0.0GlyXaa: 0.0 ± 0.0
His
2.862HisAla: 2.862 ± 0.039
0.248HisCys: 0.248 ± 0.01
1.384HisAsp: 1.384 ± 0.023
1.239HisGlu: 1.239 ± 0.024
0.655HisPhe: 0.655 ± 0.017
2.631HisGly: 2.631 ± 0.036
0.837HisHis: 0.837 ± 0.024
0.745HisIle: 0.745 ± 0.02
0.407HisLys: 0.407 ± 0.015
2.541HisLeu: 2.541 ± 0.04
0.347HisMet: 0.347 ± 0.012
0.368HisAsn: 0.368 ± 0.013
2.06HisPro: 2.06 ± 0.034
0.737HisGln: 0.737 ± 0.022
2.339HisArg: 2.339 ± 0.033
1.133HisSer: 1.133 ± 0.026
1.529HisThr: 1.529 ± 0.026
1.537HisVal: 1.537 ± 0.028
0.356HisTrp: 0.356 ± 0.013
0.496HisTyr: 0.496 ± 0.016
0.0HisXaa: 0.0 ± 0.0
Ile
4.81IleAla: 4.81 ± 0.055
0.308IleCys: 0.308 ± 0.011
2.147IleAsp: 2.147 ± 0.035
1.955IleGlu: 1.955 ± 0.033
0.666IlePhe: 0.666 ± 0.018
3.547IleGly: 3.547 ± 0.046
0.627IleHis: 0.627 ± 0.018
0.844IleIle: 0.844 ± 0.021
0.73IleLys: 0.73 ± 0.02
2.309IleLeu: 2.309 ± 0.031
0.429IleMet: 0.429 ± 0.015
0.681IleAsn: 0.681 ± 0.016
1.865IlePro: 1.865 ± 0.032
0.718IleGln: 0.718 ± 0.019
2.326IleArg: 2.326 ± 0.031
1.669IleSer: 1.669 ± 0.031
2.238IleThr: 2.238 ± 0.039
2.642IleVal: 2.642 ± 0.038
0.363IleTrp: 0.363 ± 0.013
0.501IleTyr: 0.501 ± 0.013
0.0IleXaa: 0.0 ± 0.0
Lys
2.873LysAla: 2.873 ± 0.05
0.121LysCys: 0.121 ± 0.007
1.359LysAsp: 1.359 ± 0.03
1.206LysGlu: 1.206 ± 0.025
0.454LysPhe: 0.454 ± 0.015
1.863LysGly: 1.863 ± 0.04
0.433LysHis: 0.433 ± 0.014
0.874LysIle: 0.874 ± 0.026
0.889LysLys: 0.889 ± 0.03
1.95LysLeu: 1.95 ± 0.037
0.378LysMet: 0.378 ± 0.015
0.543LysAsn: 0.543 ± 0.02
1.349LysPro: 1.349 ± 0.029
0.708LysGln: 0.708 ± 0.023
1.509LysArg: 1.509 ± 0.03
1.146LysSer: 1.146 ± 0.025
1.229LysThr: 1.229 ± 0.03
1.751LysVal: 1.751 ± 0.036
0.26LysTrp: 0.26 ± 0.011
0.429LysTyr: 0.429 ± 0.014
0.0LysXaa: 0.0 ± 0.0
Leu
15.366LeuAla: 15.366 ± 0.108
0.932LeuCys: 0.932 ± 0.024
6.458LeuAsp: 6.458 ± 0.067
4.536LeuGlu: 4.536 ± 0.05
2.548LeuPhe: 2.548 ± 0.034
9.082LeuGly: 9.082 ± 0.085
2.415LeuHis: 2.415 ± 0.035
3.32LeuIle: 3.32 ± 0.048
1.926LeuLys: 1.926 ± 0.036
11.204LeuLeu: 11.204 ± 0.105
1.594LeuMet: 1.594 ± 0.029
1.612LeuAsn: 1.612 ± 0.029
6.823LeuPro: 6.823 ± 0.069
2.169LeuGln: 2.169 ± 0.034
8.971LeuArg: 8.971 ± 0.081
5.357LeuSer: 5.357 ± 0.052
7.008LeuThr: 7.008 ± 0.062
8.233LeuVal: 8.233 ± 0.078
1.241LeuTrp: 1.241 ± 0.022
1.724LeuTyr: 1.724 ± 0.029
0.0LeuXaa: 0.0 ± 0.0
Met
2.384MetAla: 2.384 ± 0.036
0.146MetCys: 0.146 ± 0.008
0.892MetAsp: 0.892 ± 0.023
0.732MetGlu: 0.732 ± 0.02
0.425MetPhe: 0.425 ± 0.015
1.365MetGly: 1.365 ± 0.024
0.376MetHis: 0.376 ± 0.011
0.622MetIle: 0.622 ± 0.018
0.403MetLys: 0.403 ± 0.014
1.679MetLeu: 1.679 ± 0.032
0.292MetMet: 0.292 ± 0.013
0.428MetAsn: 0.428 ± 0.016
1.166MetPro: 1.166 ± 0.025
0.445MetGln: 0.445 ± 0.014
1.465MetArg: 1.465 ± 0.027
1.259MetSer: 1.259 ± 0.023
1.47MetThr: 1.47 ± 0.028
1.275MetVal: 1.275 ± 0.026
0.213MetTrp: 0.213 ± 0.009
0.31MetTyr: 0.31 ± 0.012
0.0MetXaa: 0.0 ± 0.0
Asn
2.122AsnAla: 2.122 ± 0.032
0.176AsnCys: 0.176 ± 0.008
0.896AsnAsp: 0.896 ± 0.02
0.781AsnGlu: 0.781 ± 0.018
0.457AsnPhe: 0.457 ± 0.015
1.855AsnGly: 1.855 ± 0.03
0.39AsnHis: 0.39 ± 0.013
0.64AsnIle: 0.64 ± 0.018
0.427AsnLys: 0.427 ± 0.016
1.54AsnLeu: 1.54 ± 0.025
0.279AsnMet: 0.279 ± 0.012
0.385AsnAsn: 0.385 ± 0.015
1.339AsnPro: 1.339 ± 0.028
0.487AsnGln: 0.487 ± 0.016
1.272AsnArg: 1.272 ± 0.025
0.909AsnSer: 0.909 ± 0.023
1.038AsnThr: 1.038 ± 0.028
1.241AsnVal: 1.241 ± 0.03
0.281AsnTrp: 0.281 ± 0.011
0.369AsnTyr: 0.369 ± 0.013
0.0AsnXaa: 0.0 ± 0.0
Pro
9.603ProAla: 9.603 ± 0.114
0.449ProCys: 0.449 ± 0.016
4.745ProAsp: 4.745 ± 0.058
4.481ProGlu: 4.481 ± 0.053
1.522ProPhe: 1.522 ± 0.028
7.266ProGly: 7.266 ± 0.071
1.63ProHis: 1.63 ± 0.031
1.231ProIle: 1.231 ± 0.026
1.19ProLys: 1.19 ± 0.026
5.543ProLeu: 5.543 ± 0.054
1.047ProMet: 1.047 ± 0.02
0.9ProAsn: 0.9 ± 0.022
3.992ProPro: 3.992 ± 0.069
1.991ProGln: 1.991 ± 0.042
4.409ProArg: 4.409 ± 0.046
3.277ProSer: 3.277 ± 0.049
3.187ProThr: 3.187 ± 0.048
5.562ProVal: 5.562 ± 0.055
0.904ProTrp: 0.904 ± 0.025
1.423ProTyr: 1.423 ± 0.033
0.0ProXaa: 0.0 ± 0.0
Gln
3.894GlnAla: 3.894 ± 0.047
0.188GlnCys: 0.188 ± 0.01
1.427GlnAsp: 1.427 ± 0.029
1.546GlnGlu: 1.546 ± 0.028
0.643GlnPhe: 0.643 ± 0.016
2.388GlnGly: 2.388 ± 0.036
0.765GlnHis: 0.765 ± 0.018
1.044GlnIle: 1.044 ± 0.021
0.592GlnLys: 0.592 ± 0.017
3.198GlnLeu: 3.198 ± 0.046
0.535GlnMet: 0.535 ± 0.017
0.473GlnAsn: 0.473 ± 0.016
1.852GlnPro: 1.852 ± 0.046
1.431GlnGln: 1.431 ± 0.051
2.592GlnArg: 2.592 ± 0.037
1.253GlnSer: 1.253 ± 0.026
1.239GlnThr: 1.239 ± 0.025
2.276GlnVal: 2.276 ± 0.037
0.461GlnTrp: 0.461 ± 0.014
0.551GlnTyr: 0.551 ± 0.016
0.0GlnXaa: 0.0 ± 0.0
Arg
10.481ArgAla: 10.481 ± 0.098
0.714ArgCys: 0.714 ± 0.017
4.335ArgAsp: 4.335 ± 0.055
4.776ArgGlu: 4.776 ± 0.049
2.259ArgPhe: 2.259 ± 0.033
6.162ArgGly: 6.162 ± 0.059
2.296ArgHis: 2.296 ± 0.04
3.397ArgIle: 3.397 ± 0.04
1.812ArgLys: 1.812 ± 0.032
9.073ArgLeu: 9.073 ± 0.076
1.835ArgMet: 1.835 ± 0.032
1.428ArgAsn: 1.428 ± 0.027
5.574ArgPro: 5.574 ± 0.063
2.535ArgGln: 2.535 ± 0.037
8.425ArgArg: 8.425 ± 0.089
4.189ArgSer: 4.189 ± 0.048
5.924ArgThr: 5.924 ± 0.057
5.457ArgVal: 5.457 ± 0.054
1.382ArgTrp: 1.382 ± 0.026
1.894ArgTyr: 1.894 ± 0.031
0.0ArgXaa: 0.0 ± 0.0
Ser
6.853SerAla: 6.853 ± 0.061
0.472SerCys: 0.472 ± 0.013
2.5SerAsp: 2.5 ± 0.039
2.27SerGlu: 2.27 ± 0.034
1.449SerPhe: 1.449 ± 0.025
6.015SerGly: 6.015 ± 0.057
1.072SerHis: 1.072 ± 0.023
1.254SerIle: 1.254 ± 0.025
1.004SerLys: 1.004 ± 0.026
4.691SerLeu: 4.691 ± 0.051
1.025SerMet: 1.025 ± 0.022
0.79SerAsn: 0.79 ± 0.023
3.429SerPro: 3.429 ± 0.047
1.241SerGln: 1.241 ± 0.028
3.82SerArg: 3.82 ± 0.043
2.765SerSer: 2.765 ± 0.044
2.802SerThr: 2.802 ± 0.037
4.052SerVal: 4.052 ± 0.046
0.889SerTrp: 0.889 ± 0.024
1.167SerTyr: 1.167 ± 0.025
0.0SerXaa: 0.0 ± 0.0
Thr
9.292ThrAla: 9.292 ± 0.079
0.455ThrCys: 0.455 ± 0.016
3.611ThrAsp: 3.611 ± 0.045
3.21ThrGlu: 3.21 ± 0.039
1.554ThrPhe: 1.554 ± 0.029
6.922ThrGly: 6.922 ± 0.071
1.289ThrHis: 1.289 ± 0.023
1.639ThrIle: 1.639 ± 0.03
1.114ThrLys: 1.114 ± 0.028
5.629ThrLeu: 5.629 ± 0.051
0.935ThrMet: 0.935 ± 0.02
0.936ThrAsn: 0.936 ± 0.02
4.278ThrPro: 4.278 ± 0.058
1.269ThrGln: 1.269 ± 0.025
3.869ThrArg: 3.869 ± 0.043
3.101ThrSer: 3.101 ± 0.038
3.83ThrThr: 3.83 ± 0.054
5.894ThrVal: 5.894 ± 0.058
0.822ThrTrp: 0.822 ± 0.019
1.24ThrTyr: 1.24 ± 0.028
0.0ThrXaa: 0.0 ± 0.0
Val
10.042ValAla: 10.042 ± 0.088
0.807ValCys: 0.807 ± 0.019
4.481ValAsp: 4.481 ± 0.05
4.267ValGlu: 4.267 ± 0.045
2.242ValPhe: 2.242 ± 0.035
6.055ValGly: 6.055 ± 0.063
1.974ValHis: 1.974 ± 0.031
2.924ValIle: 2.924 ± 0.038
1.647ValLys: 1.647 ± 0.037
9.22ValLeu: 9.22 ± 0.078
1.364ValMet: 1.364 ± 0.031
1.551ValAsn: 1.551 ± 0.029
5.285ValPro: 5.285 ± 0.054
2.048ValGln: 2.048 ± 0.028
7.118ValArg: 7.118 ± 0.06
4.012ValSer: 4.012 ± 0.045
5.274ValThr: 5.274 ± 0.058
7.193ValVal: 7.193 ± 0.07
1.048ValTrp: 1.048 ± 0.022
1.398ValTyr: 1.398 ± 0.024
0.0ValXaa: 0.0 ± 0.0
Trp
1.592TrpAla: 1.592 ± 0.028
0.171TrpCys: 0.171 ± 0.008
0.755TrpAsp: 0.755 ± 0.019
0.713TrpGlu: 0.713 ± 0.02
0.485TrpPhe: 0.485 ± 0.015
1.019TrpGly: 1.019 ± 0.025
0.407TrpHis: 0.407 ± 0.013
0.51TrpIle: 0.51 ± 0.014
0.352TrpLys: 0.352 ± 0.012
1.737TrpLeu: 1.737 ± 0.027
0.279TrpMet: 0.279 ± 0.012
0.339TrpAsn: 0.339 ± 0.013
0.806TrpPro: 0.806 ± 0.019
0.648TrpGln: 0.648 ± 0.019
1.336TrpArg: 1.336 ± 0.029
0.892TrpSer: 0.892 ± 0.024
0.942TrpThr: 0.942 ± 0.024
0.92TrpVal: 0.92 ± 0.019
0.316TrpTrp: 0.316 ± 0.013
0.33TrpTyr: 0.33 ± 0.014
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.669TyrAla: 2.669 ± 0.037
0.19TyrCys: 0.19 ± 0.009
1.388TyrAsp: 1.388 ± 0.034
1.176TyrGlu: 1.176 ± 0.026
0.611TyrPhe: 0.611 ± 0.016
2.215TyrGly: 2.215 ± 0.036
0.412TyrHis: 0.412 ± 0.014
0.428TyrIle: 0.428 ± 0.014
0.365TyrLys: 0.365 ± 0.013
2.074TyrLeu: 2.074 ± 0.032
0.231TyrMet: 0.231 ± 0.011
0.346TyrAsn: 0.346 ± 0.014
1.065TyrPro: 1.065 ± 0.021
0.618TyrGln: 0.618 ± 0.017
1.854TyrArg: 1.854 ± 0.031
0.854TyrSer: 0.854 ± 0.022
1.081TyrThr: 1.081 ± 0.027
1.525TyrVal: 1.525 ± 0.029
0.34TyrTrp: 0.34 ± 0.012
0.399TyrTyr: 0.399 ± 0.015
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 7026 proteins (2247036 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