Amino acid dipepetide frequency for Streptomyces sp. NRRL F-4489

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
26.044AlaAla: 26.044 ± 0.202
1.111AlaCys: 1.111 ± 0.023
8.597AlaAsp: 8.597 ± 0.064
9.132AlaGlu: 9.132 ± 0.099
3.753AlaPhe: 3.753 ± 0.047
15.366AlaGly: 15.366 ± 0.108
3.15AlaHis: 3.15 ± 0.045
3.394AlaIle: 3.394 ± 0.043
2.79AlaLys: 2.79 ± 0.054
15.745AlaLeu: 15.745 ± 0.126
2.514AlaMet: 2.514 ± 0.036
1.883AlaAsn: 1.883 ± 0.03
8.706AlaPro: 8.706 ± 0.094
3.624AlaGln: 3.624 ± 0.05
11.738AlaArg: 11.738 ± 0.096
5.223AlaSer: 5.223 ± 0.056
7.067AlaThr: 7.067 ± 0.056
12.654AlaVal: 12.654 ± 0.097
1.834AlaTrp: 1.834 ± 0.03
2.869AlaTyr: 2.869 ± 0.04
0.0AlaXaa: 0.0 ± 0.0
Cys
1.284CysAla: 1.284 ± 0.027
0.104CysCys: 0.104 ± 0.009
0.474CysAsp: 0.474 ± 0.017
0.392CysGlu: 0.392 ± 0.014
0.225CysPhe: 0.225 ± 0.01
1.011CysGly: 1.011 ± 0.025
0.198CysHis: 0.198 ± 0.011
0.159CysIle: 0.159 ± 0.009
0.108CysLys: 0.108 ± 0.007
0.788CysLeu: 0.788 ± 0.021
0.128CysMet: 0.128 ± 0.008
0.122CysAsn: 0.122 ± 0.008
0.506CysPro: 0.506 ± 0.018
0.182CysGln: 0.182 ± 0.01
0.67CysArg: 0.67 ± 0.02
0.375CysSer: 0.375 ± 0.013
0.493CysThr: 0.493 ± 0.016
0.654CysVal: 0.654 ± 0.018
0.127CysTrp: 0.127 ± 0.007
0.155CysTyr: 0.155 ± 0.009
0.0CysXaa: 0.0 ± 0.0
Asp
8.075AspAla: 8.075 ± 0.072
0.421AspCys: 0.421 ± 0.015
3.221AspAsp: 3.221 ± 0.044
3.516AspGlu: 3.516 ± 0.045
1.542AspPhe: 1.542 ± 0.029
6.488AspGly: 6.488 ± 0.066
1.428AspHis: 1.428 ± 0.033
1.756AspIle: 1.756 ± 0.029
1.003AspLys: 1.003 ± 0.023
6.015AspLeu: 6.015 ± 0.056
0.719AspMet: 0.719 ± 0.02
0.803AspAsn: 0.803 ± 0.02
4.682AspPro: 4.682 ± 0.056
1.4AspGln: 1.4 ± 0.031
5.175AspArg: 5.175 ± 0.063
2.046AspSer: 2.046 ± 0.038
3.036AspThr: 3.036 ± 0.038
4.072AspVal: 4.072 ± 0.044
1.002AspTrp: 1.002 ± 0.022
1.063AspTyr: 1.063 ± 0.025
0.0AspXaa: 0.0 ± 0.0
Glu
7.368GluAla: 7.368 ± 0.086
0.348GluCys: 0.348 ± 0.015
2.61GluAsp: 2.61 ± 0.038
3.524GluGlu: 3.524 ± 0.054
1.439GluPhe: 1.439 ± 0.03
4.106GluGly: 4.106 ± 0.047
1.442GluHis: 1.442 ± 0.029
2.23GluIle: 2.23 ± 0.032
1.331GluLys: 1.331 ± 0.035
6.71GluLeu: 6.71 ± 0.065
0.865GluMet: 0.865 ± 0.019
0.898GluAsn: 0.898 ± 0.021
3.328GluPro: 3.328 ± 0.039
1.986GluGln: 1.986 ± 0.035
5.788GluArg: 5.788 ± 0.063
2.143GluSer: 2.143 ± 0.033
2.719GluThr: 2.719 ± 0.036
4.342GluVal: 4.342 ± 0.06
0.71GluTrp: 0.71 ± 0.02
1.013GluTyr: 1.013 ± 0.023
0.0GluXaa: 0.0 ± 0.0
Phe
3.859PheAla: 3.859 ± 0.053
0.28PheCys: 0.28 ± 0.011
1.802PheAsp: 1.802 ± 0.033
1.267PheGlu: 1.267 ± 0.027
0.874PhePhe: 0.874 ± 0.027
3.09PheGly: 3.09 ± 0.04
0.656PheHis: 0.656 ± 0.021
0.675PheIle: 0.675 ± 0.02
0.453PheLys: 0.453 ± 0.015
2.711PheLeu: 2.711 ± 0.038
0.374PheMet: 0.374 ± 0.014
0.518PheAsn: 0.518 ± 0.016
1.463PhePro: 1.463 ± 0.029
0.632PheGln: 0.632 ± 0.017
1.946PheArg: 1.946 ± 0.032
1.377PheSer: 1.377 ± 0.027
2.012PheThr: 2.012 ± 0.033
1.977PheVal: 1.977 ± 0.036
0.414PheTrp: 0.414 ± 0.014
0.545PheTyr: 0.545 ± 0.018
0.0PheXaa: 0.0 ± 0.0
Gly
12.767GlyAla: 12.767 ± 0.102
0.888GlyCys: 0.888 ± 0.021
5.099GlyAsp: 5.099 ± 0.054
5.13GlyGlu: 5.13 ± 0.049
2.869GlyPhe: 2.869 ± 0.039
10.144GlyGly: 10.144 ± 0.122
2.419GlyHis: 2.419 ± 0.033
3.427GlyIle: 3.427 ± 0.042
2.364GlyLys: 2.364 ± 0.05
9.705GlyLeu: 9.705 ± 0.077
2.06GlyMet: 2.06 ± 0.033
1.642GlyAsn: 1.642 ± 0.031
6.32GlyPro: 6.32 ± 0.076
2.664GlyGln: 2.664 ± 0.043
8.424GlyArg: 8.424 ± 0.074
5.036GlySer: 5.036 ± 0.055
6.648GlyThr: 6.648 ± 0.063
7.266GlyVal: 7.266 ± 0.069
1.67GlyTrp: 1.67 ± 0.033
2.32GlyTyr: 2.32 ± 0.035
0.0GlyXaa: 0.0 ± 0.0
His
2.712HisAla: 2.712 ± 0.039
0.246HisCys: 0.246 ± 0.011
1.317HisAsp: 1.317 ± 0.028
1.111HisGlu: 1.111 ± 0.024
0.694HisPhe: 0.694 ± 0.02
2.606HisGly: 2.606 ± 0.041
0.755HisHis: 0.755 ± 0.02
0.662HisIle: 0.662 ± 0.019
0.36HisLys: 0.36 ± 0.014
2.527HisLeu: 2.527 ± 0.033
0.308HisMet: 0.308 ± 0.011
0.345HisAsn: 0.345 ± 0.014
2.038HisPro: 2.038 ± 0.033
0.7HisGln: 0.7 ± 0.023
2.287HisArg: 2.287 ± 0.034
0.958HisSer: 0.958 ± 0.024
1.41HisThr: 1.41 ± 0.024
1.496HisVal: 1.496 ± 0.028
0.372HisTrp: 0.372 ± 0.017
0.52HisTyr: 0.52 ± 0.016
0.0HisXaa: 0.0 ± 0.0
Ile
4.839IleAla: 4.839 ± 0.051
0.297IleCys: 0.297 ± 0.012
2.121IleAsp: 2.121 ± 0.038
1.904IleGlu: 1.904 ± 0.031
0.664IlePhe: 0.664 ± 0.018
3.591IleGly: 3.591 ± 0.046
0.557IleHis: 0.557 ± 0.016
0.817IleIle: 0.817 ± 0.025
0.689IleLys: 0.689 ± 0.018
2.249IleLeu: 2.249 ± 0.034
0.407IleMet: 0.407 ± 0.014
0.676IleAsn: 0.676 ± 0.02
1.743IlePro: 1.743 ± 0.033
0.654IleGln: 0.654 ± 0.019
2.197IleArg: 2.197 ± 0.037
1.506IleSer: 1.506 ± 0.03
2.09IleThr: 2.09 ± 0.028
2.456IleVal: 2.456 ± 0.038
0.353IleTrp: 0.353 ± 0.014
0.485IleTyr: 0.485 ± 0.017
0.0IleXaa: 0.0 ± 0.0
Lys
2.644LysAla: 2.644 ± 0.044
0.107LysCys: 0.107 ± 0.007
1.28LysAsp: 1.28 ± 0.033
1.118LysGlu: 1.118 ± 0.024
0.442LysPhe: 0.442 ± 0.014
1.774LysGly: 1.774 ± 0.038
0.397LysHis: 0.397 ± 0.016
0.827LysIle: 0.827 ± 0.025
0.802LysLys: 0.802 ± 0.026
1.912LysLeu: 1.912 ± 0.034
0.365LysMet: 0.365 ± 0.015
0.471LysAsn: 0.471 ± 0.018
1.282LysPro: 1.282 ± 0.033
0.612LysGln: 0.612 ± 0.019
1.408LysArg: 1.408 ± 0.029
0.975LysSer: 0.975 ± 0.028
1.139LysThr: 1.139 ± 0.028
1.693LysVal: 1.693 ± 0.034
0.237LysTrp: 0.237 ± 0.012
0.417LysTyr: 0.417 ± 0.017
0.0LysXaa: 0.0 ± 0.0
Leu
16.83LeuAla: 16.83 ± 0.111
0.899LeuCys: 0.899 ± 0.021
6.607LeuAsp: 6.607 ± 0.077
4.365LeuGlu: 4.365 ± 0.055
2.579LeuPhe: 2.579 ± 0.04
9.479LeuGly: 9.479 ± 0.081
2.384LeuHis: 2.384 ± 0.036
3.259LeuIle: 3.259 ± 0.043
1.853LeuLys: 1.853 ± 0.035
11.468LeuLeu: 11.468 ± 0.117
1.573LeuMet: 1.573 ± 0.032
1.57LeuAsn: 1.57 ± 0.029
6.932LeuPro: 6.932 ± 0.071
2.117LeuGln: 2.117 ± 0.033
9.144LeuArg: 9.144 ± 0.077
4.904LeuSer: 4.904 ± 0.057
6.956LeuThr: 6.956 ± 0.066
8.552LeuVal: 8.552 ± 0.08
1.287LeuTrp: 1.287 ± 0.029
1.821LeuTyr: 1.821 ± 0.029
0.0LeuXaa: 0.0 ± 0.0
Met
2.429MetAla: 2.429 ± 0.034
0.134MetCys: 0.134 ± 0.008
0.892MetAsp: 0.892 ± 0.02
0.708MetGlu: 0.708 ± 0.018
0.427MetPhe: 0.427 ± 0.012
1.316MetGly: 1.316 ± 0.027
0.324MetHis: 0.324 ± 0.013
0.595MetIle: 0.595 ± 0.019
0.377MetLys: 0.377 ± 0.014
1.618MetLeu: 1.618 ± 0.027
0.279MetMet: 0.279 ± 0.012
0.383MetAsn: 0.383 ± 0.012
1.123MetPro: 1.123 ± 0.026
0.39MetGln: 0.39 ± 0.013
1.386MetArg: 1.386 ± 0.026
1.155MetSer: 1.155 ± 0.022
1.477MetThr: 1.477 ± 0.028
1.225MetVal: 1.225 ± 0.028
0.202MetTrp: 0.202 ± 0.01
0.293MetTyr: 0.293 ± 0.011
0.0MetXaa: 0.0 ± 0.0
Asn
2.113AsnAla: 2.113 ± 0.034
0.148AsnCys: 0.148 ± 0.008
0.906AsnAsp: 0.906 ± 0.02
0.717AsnGlu: 0.717 ± 0.018
0.428AsnPhe: 0.428 ± 0.015
1.759AsnGly: 1.759 ± 0.03
0.383AsnHis: 0.383 ± 0.015
0.567AsnIle: 0.567 ± 0.019
0.361AsnLys: 0.361 ± 0.015
1.529AsnLeu: 1.529 ± 0.032
0.259AsnMet: 0.259 ± 0.01
0.358AsnAsn: 0.358 ± 0.014
1.259AsnPro: 1.259 ± 0.027
0.44AsnGln: 0.44 ± 0.016
1.133AsnArg: 1.133 ± 0.027
0.815AsnSer: 0.815 ± 0.022
0.997AsnThr: 0.997 ± 0.025
1.232AsnVal: 1.232 ± 0.026
0.275AsnTrp: 0.275 ± 0.013
0.381AsnTyr: 0.381 ± 0.014
0.0AsnXaa: 0.0 ± 0.0
Pro
10.567ProAla: 10.567 ± 0.098
0.376ProCys: 0.376 ± 0.014
4.807ProAsp: 4.807 ± 0.059
4.638ProGlu: 4.638 ± 0.056
1.617ProPhe: 1.617 ± 0.029
7.871ProGly: 7.871 ± 0.078
1.573ProHis: 1.573 ± 0.033
1.155ProIle: 1.155 ± 0.021
1.098ProLys: 1.098 ± 0.028
5.745ProLeu: 5.745 ± 0.07
1.021ProMet: 1.021 ± 0.026
0.818ProAsn: 0.818 ± 0.021
4.22ProPro: 4.22 ± 0.08
1.792ProGln: 1.792 ± 0.048
4.499ProArg: 4.499 ± 0.048
2.864ProSer: 2.864 ± 0.046
2.97ProThr: 2.97 ± 0.041
5.63ProVal: 5.63 ± 0.055
0.938ProTrp: 0.938 ± 0.022
1.533ProTyr: 1.533 ± 0.032
0.0ProXaa: 0.0 ± 0.0
Gln
3.657GlnAla: 3.657 ± 0.045
0.168GlnCys: 0.168 ± 0.01
1.333GlnAsp: 1.333 ± 0.028
1.434GlnGlu: 1.434 ± 0.03
0.648GlnPhe: 0.648 ± 0.018
2.202GlnGly: 2.202 ± 0.038
0.663GlnHis: 0.663 ± 0.028
1.04GlnIle: 1.04 ± 0.025
0.542GlnLys: 0.542 ± 0.018
3.074GlnLeu: 3.074 ± 0.039
0.477GlnMet: 0.477 ± 0.017
0.419GlnAsn: 0.419 ± 0.018
1.694GlnPro: 1.694 ± 0.049
1.217GlnGln: 1.217 ± 0.06
2.272GlnArg: 2.272 ± 0.037
1.054GlnSer: 1.054 ± 0.024
1.204GlnThr: 1.204 ± 0.025
2.135GlnVal: 2.135 ± 0.035
0.455GlnTrp: 0.455 ± 0.015
0.526GlnTyr: 0.526 ± 0.016
0.0GlnXaa: 0.0 ± 0.0
Arg
11.126ArgAla: 11.126 ± 0.084
0.653ArgCys: 0.653 ± 0.018
4.452ArgAsp: 4.452 ± 0.056
4.813ArgGlu: 4.813 ± 0.051
2.323ArgPhe: 2.323 ± 0.03
6.214ArgGly: 6.214 ± 0.058
2.229ArgHis: 2.229 ± 0.036
3.35ArgIle: 3.35 ± 0.042
1.659ArgLys: 1.659 ± 0.032
9.243ArgLeu: 9.243 ± 0.077
1.788ArgMet: 1.788 ± 0.027
1.352ArgAsn: 1.352 ± 0.028
5.79ArgPro: 5.79 ± 0.06
2.392ArgGln: 2.392 ± 0.036
8.479ArgArg: 8.479 ± 0.076
3.756ArgSer: 3.756 ± 0.041
5.746ArgThr: 5.746 ± 0.058
5.71ArgVal: 5.71 ± 0.05
1.399ArgTrp: 1.399 ± 0.028
1.938ArgTyr: 1.938 ± 0.035
0.0ArgXaa: 0.0 ± 0.0
Ser
6.233SerAla: 6.233 ± 0.057
0.39SerCys: 0.39 ± 0.012
2.167SerAsp: 2.167 ± 0.035
2.007SerGlu: 2.007 ± 0.036
1.403SerPhe: 1.403 ± 0.03
5.656SerGly: 5.656 ± 0.066
0.92SerHis: 0.92 ± 0.024
1.155SerIle: 1.155 ± 0.027
0.87SerLys: 0.87 ± 0.023
4.374SerLeu: 4.374 ± 0.055
0.911SerMet: 0.911 ± 0.022
0.712SerAsn: 0.712 ± 0.02
3.003SerPro: 3.003 ± 0.042
1.069SerGln: 1.069 ± 0.026
3.403SerArg: 3.403 ± 0.041
2.264SerSer: 2.264 ± 0.038
2.478SerThr: 2.478 ± 0.038
3.607SerVal: 3.607 ± 0.046
0.802SerTrp: 0.802 ± 0.022
1.117SerTyr: 1.117 ± 0.025
0.0SerXaa: 0.0 ± 0.0
Thr
9.638ThrAla: 9.638 ± 0.087
0.417ThrCys: 0.417 ± 0.016
3.381ThrAsp: 3.381 ± 0.043
3.018ThrGlu: 3.018 ± 0.043
1.547ThrPhe: 1.547 ± 0.028
6.968ThrGly: 6.968 ± 0.064
1.163ThrHis: 1.163 ± 0.024
1.483ThrIle: 1.483 ± 0.024
1.042ThrLys: 1.042 ± 0.025
5.607ThrLeu: 5.607 ± 0.058
0.876ThrMet: 0.876 ± 0.023
0.875ThrAsn: 0.875 ± 0.022
4.192ThrPro: 4.192 ± 0.048
1.179ThrGln: 1.179 ± 0.027
3.798ThrArg: 3.798 ± 0.044
2.653ThrSer: 2.653 ± 0.041
3.614ThrThr: 3.614 ± 0.053
5.78ThrVal: 5.78 ± 0.052
0.806ThrTrp: 0.806 ± 0.022
1.245ThrTyr: 1.245 ± 0.027
0.0ThrXaa: 0.0 ± 0.0
Val
10.423ValAla: 10.423 ± 0.079
0.819ValCys: 0.819 ± 0.02
4.165ValAsp: 4.165 ± 0.048
4.209ValGlu: 4.209 ± 0.05
2.331ValPhe: 2.331 ± 0.04
5.861ValGly: 5.861 ± 0.064
1.969ValHis: 1.969 ± 0.03
2.813ValIle: 2.813 ± 0.046
1.531ValLys: 1.531 ± 0.033
9.571ValLeu: 9.571 ± 0.091
1.312ValMet: 1.312 ± 0.027
1.531ValAsn: 1.531 ± 0.03
5.551ValPro: 5.551 ± 0.058
1.932ValGln: 1.932 ± 0.033
7.43ValArg: 7.43 ± 0.073
3.79ValSer: 3.79 ± 0.044
5.119ValThr: 5.119 ± 0.058
7.205ValVal: 7.205 ± 0.072
1.092ValTrp: 1.092 ± 0.023
1.52ValTyr: 1.52 ± 0.028
0.0ValXaa: 0.0 ± 0.0
Trp
1.674TrpAla: 1.674 ± 0.027
0.172TrpCys: 0.172 ± 0.01
0.813TrpAsp: 0.813 ± 0.02
0.703TrpGlu: 0.703 ± 0.016
0.488TrpPhe: 0.488 ± 0.014
1.019TrpGly: 1.019 ± 0.023
0.402TrpHis: 0.402 ± 0.015
0.503TrpIle: 0.503 ± 0.016
0.315TrpLys: 0.315 ± 0.014
1.808TrpLeu: 1.808 ± 0.039
0.283TrpMet: 0.283 ± 0.012
0.337TrpAsn: 0.337 ± 0.015
0.801TrpPro: 0.801 ± 0.021
0.626TrpGln: 0.626 ± 0.019
1.337TrpArg: 1.337 ± 0.028
0.828TrpSer: 0.828 ± 0.023
0.951TrpThr: 0.951 ± 0.02
0.905TrpVal: 0.905 ± 0.023
0.319TrpTrp: 0.319 ± 0.011
0.342TrpTyr: 0.342 ± 0.013
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.911TyrAla: 2.911 ± 0.041
0.174TyrCys: 0.174 ± 0.009
1.42TyrAsp: 1.42 ± 0.031
1.191TyrGlu: 1.191 ± 0.025
0.635TyrPhe: 0.635 ± 0.019
2.339TyrGly: 2.339 ± 0.032
0.411TyrHis: 0.411 ± 0.015
0.432TyrIle: 0.432 ± 0.016
0.356TyrLys: 0.356 ± 0.015
2.179TyrLeu: 2.179 ± 0.032
0.215TyrMet: 0.215 ± 0.01
0.345TyrAsn: 0.345 ± 0.014
1.1TyrPro: 1.1 ± 0.024
0.607TyrGln: 0.607 ± 0.02
1.899TyrArg: 1.899 ± 0.033
0.818TyrSer: 0.818 ± 0.026
1.155TyrThr: 1.155 ± 0.026
1.581TyrVal: 1.581 ± 0.026
0.333TyrTrp: 0.333 ± 0.015
0.422TyrTyr: 0.422 ± 0.016
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 6270 proteins (2024708 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