Amino acid dipepetide frequency for Streptomyces sp. wa22

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.

	Ala	Cys	Asp	Glu	Phe	Gly	His	Ile	Lys	Leu	Met	Asn	Pro	Gln	Arg	Ser	Thr	Val	Trp	Tyr	Xaa
Ala	20.426AlaAla: 20.426 ± 0.156	1.015AlaCys: 1.015 ± 0.023	8.196AlaAsp: 8.196 ± 0.072	8.614AlaGlu: 8.614 ± 0.091	3.54AlaPhe: 3.54 ± 0.041	13.373AlaGly: 13.373 ± 0.091	2.76AlaHis: 2.76 ± 0.038	3.172AlaIle: 3.172 ± 0.044	2.735AlaLys: 2.735 ± 0.051	14.25AlaLeu: 14.25 ± 0.114	2.557AlaMet: 2.557 ± 0.034	1.855AlaAsn: 1.855 ± 0.033	6.968AlaPro: 6.968 ± 0.076	3.574AlaGln: 3.574 ± 0.041	10.027AlaArg: 10.027 ± 0.089	6.156AlaSer: 6.156 ± 0.05	6.928AlaThr: 6.928 ± 0.064	12.491AlaVal: 12.491 ± 0.093	1.778AlaTrp: 1.778 ± 0.027	2.752AlaTyr: 2.752 ± 0.037	0.024AlaXaa: 0.024 ± 0.003
Cys	1.067CysAla: 1.067 ± 0.026	0.088CysCys: 0.088 ± 0.006	0.454CysAsp: 0.454 ± 0.014	0.391CysGlu: 0.391 ± 0.014	0.221CysPhe: 0.221 ± 0.01	0.951CysGly: 0.951 ± 0.023	0.19CysHis: 0.19 ± 0.009	0.165CysIle: 0.165 ± 0.009	0.107CysLys: 0.107 ± 0.006	0.703CysLeu: 0.703 ± 0.017	0.119CysMet: 0.119 ± 0.007	0.132CysAsn: 0.132 ± 0.009	0.476CysPro: 0.476 ± 0.014	0.158CysGln: 0.158 ± 0.009	0.585CysArg: 0.585 ± 0.018	0.449CysSer: 0.449 ± 0.016	0.505CysThr: 0.505 ± 0.018	0.659CysVal: 0.659 ± 0.017	0.128CysTrp: 0.128 ± 0.008	0.137CysTyr: 0.137 ± 0.008	0.001CysXaa: 0.001 ± 0.001
Asp	7.686AspAla: 7.686 ± 0.067	0.442AspCys: 0.442 ± 0.017	3.667AspAsp: 3.667 ± 0.051	4.02AspGlu: 4.02 ± 0.045	1.703AspPhe: 1.703 ± 0.03	6.636AspGly: 6.636 ± 0.068	1.432AspHis: 1.432 ± 0.026	1.957AspIle: 1.957 ± 0.035	1.22AspLys: 1.22 ± 0.031	6.074AspLeu: 6.074 ± 0.064	0.874AspMet: 0.874 ± 0.02	0.979AspAsn: 0.979 ± 0.021	4.464AspPro: 4.464 ± 0.047	1.464AspGln: 1.464 ± 0.029	4.973AspArg: 4.973 ± 0.055	2.751AspSer: 2.751 ± 0.04	3.404AspThr: 3.404 ± 0.045	4.811AspVal: 4.811 ± 0.046	0.991AspTrp: 0.991 ± 0.024	1.105AspTyr: 1.105 ± 0.024	0.008AspXaa: 0.008 ± 0.002
Glu	7.46GluAla: 7.46 ± 0.077	0.357GluCys: 0.357 ± 0.014	2.994GluAsp: 2.994 ± 0.04	3.723GluGlu: 3.723 ± 0.062	1.406GluPhe: 1.406 ± 0.025	4.595GluGly: 4.595 ± 0.052	1.509GluHis: 1.509 ± 0.025	2.339GluIle: 2.339 ± 0.037	1.566GluLys: 1.566 ± 0.033	6.647GluLeu: 6.647 ± 0.062	0.891GluMet: 0.891 ± 0.021	1.105GluAsn: 1.105 ± 0.021	3.335GluPro: 3.335 ± 0.046	2.291GluGln: 2.291 ± 0.039	5.332GluArg: 5.332 ± 0.063	2.699GluSer: 2.699 ± 0.037	2.963GluThr: 2.963 ± 0.037	4.336GluVal: 4.336 ± 0.054	0.772GluTrp: 0.772 ± 0.021	1.135GluTyr: 1.135 ± 0.023	0.006GluXaa: 0.006 ± 0.002
Phe	3.663PheAla: 3.663 ± 0.037	0.272PheCys: 0.272 ± 0.011	1.957PheAsp: 1.957 ± 0.029	1.467PheGlu: 1.467 ± 0.027	0.867PhePhe: 0.867 ± 0.022	3.063PheGly: 3.063 ± 0.043	0.624PheHis: 0.624 ± 0.018	0.741PheIle: 0.741 ± 0.021	0.506PheLys: 0.506 ± 0.018	2.615PheLeu: 2.615 ± 0.036	0.429PheMet: 0.429 ± 0.015	0.561PheAsn: 0.561 ± 0.018	1.359PhePro: 1.359 ± 0.027	0.672PheGln: 0.672 ± 0.017	1.857PheArg: 1.857 ± 0.032	1.526PheSer: 1.526 ± 0.031	2.044PheThr: 2.044 ± 0.028	2.256PheVal: 2.256 ± 0.031	0.422PheTrp: 0.422 ± 0.014	0.581PheTyr: 0.581 ± 0.016	0.0PheXaa: 0.0 ± 0.0
Gly	11.334GlyAla: 11.334 ± 0.08	0.834GlyCys: 0.834 ± 0.021	5.342GlyAsp: 5.342 ± 0.05	5.232GlyGlu: 5.232 ± 0.056	2.92GlyPhe: 2.92 ± 0.035	9.001GlyGly: 9.001 ± 0.092	2.346GlyHis: 2.346 ± 0.036	3.587GlyIle: 3.587 ± 0.046	2.483GlyLys: 2.483 ± 0.047	9.65GlyLeu: 9.65 ± 0.088	2.042GlyMet: 2.042 ± 0.03	1.871GlyAsn: 1.871 ± 0.034	5.323GlyPro: 5.323 ± 0.057	2.689GlyGln: 2.689 ± 0.045	7.989GlyArg: 7.989 ± 0.071	5.899GlySer: 5.899 ± 0.056	6.676GlyThr: 6.676 ± 0.068	7.379GlyVal: 7.379 ± 0.061	1.677GlyTrp: 1.677 ± 0.03	2.235GlyTyr: 2.235 ± 0.032	0.009GlyXaa: 0.009 ± 0.002
His	2.607HisAla: 2.607 ± 0.036	0.202HisCys: 0.202 ± 0.01	1.396HisAsp: 1.396 ± 0.024	1.211HisGlu: 1.211 ± 0.027	0.661HisPhe: 0.661 ± 0.017	2.417HisGly: 2.417 ± 0.031	0.683HisHis: 0.683 ± 0.019	0.697HisIle: 0.697 ± 0.019	0.326HisLys: 0.326 ± 0.011	2.407HisLeu: 2.407 ± 0.033	0.343HisMet: 0.343 ± 0.01	0.366HisAsn: 0.366 ± 0.013	1.751HisPro: 1.751 ± 0.031	0.62HisGln: 0.62 ± 0.018	2.111HisArg: 2.111 ± 0.035	1.062HisSer: 1.062 ± 0.021	1.369HisThr: 1.369 ± 0.027	1.672HisVal: 1.672 ± 0.03	0.373HisTrp: 0.373 ± 0.013	0.464HisTyr: 0.464 ± 0.014	0.0HisXaa: 0.0 ± 0.0
Ile	4.688IleAla: 4.688 ± 0.058	0.299IleCys: 0.299 ± 0.012	2.257IleAsp: 2.257 ± 0.033	1.962IleGlu: 1.962 ± 0.031	0.735IlePhe: 0.735 ± 0.02	3.678IleGly: 3.678 ± 0.053	0.619IleHis: 0.619 ± 0.016	0.885IleIle: 0.885 ± 0.022	0.728IleLys: 0.728 ± 0.02	2.407IleLeu: 2.407 ± 0.04	0.45IleMet: 0.45 ± 0.015	0.68IleAsn: 0.68 ± 0.019	1.765IlePro: 1.765 ± 0.03	0.727IleGln: 0.727 ± 0.018	2.249IleArg: 2.249 ± 0.035	1.739IleSer: 1.739 ± 0.035	2.182IleThr: 2.182 ± 0.031	2.609IleVal: 2.609 ± 0.034	0.387IleTrp: 0.387 ± 0.014	0.505IleTyr: 0.505 ± 0.017	0.003IleXaa: 0.003 ± 0.001
Lys	2.992LysAla: 2.992 ± 0.057	0.103LysCys: 0.103 ± 0.007	1.428LysAsp: 1.428 ± 0.031	1.221LysGlu: 1.221 ± 0.027	0.475LysPhe: 0.475 ± 0.016	1.886LysGly: 1.886 ± 0.038	0.446LysHis: 0.446 ± 0.015	0.876LysIle: 0.876 ± 0.023	0.915LysLys: 0.915 ± 0.032	2.045LysLeu: 2.045 ± 0.036	0.385LysMet: 0.385 ± 0.014	0.534LysAsn: 0.534 ± 0.019	1.331LysPro: 1.331 ± 0.027	0.702LysGln: 0.702 ± 0.021	1.394LysArg: 1.394 ± 0.027	1.15LysSer: 1.15 ± 0.028	1.21LysThr: 1.21 ± 0.029	1.906LysVal: 1.906 ± 0.035	0.259LysTrp: 0.259 ± 0.013	0.447LysTyr: 0.447 ± 0.014	0.0LysXaa: 0.0 ± 0.0
Leu	14.41LeuAla: 14.41 ± 0.12	0.824LeuCys: 0.824 ± 0.021	6.793LeuAsp: 6.793 ± 0.058	4.719LeuGlu: 4.719 ± 0.054	2.597LeuPhe: 2.597 ± 0.039	9.335LeuGly: 9.335 ± 0.081	2.319LeuHis: 2.319 ± 0.035	3.268LeuIle: 3.268 ± 0.042	1.989LeuLys: 1.989 ± 0.034	11.28LeuLeu: 11.28 ± 0.102	1.723LeuMet: 1.723 ± 0.029	1.658LeuAsn: 1.658 ± 0.03	6.45LeuPro: 6.45 ± 0.066	2.174LeuGln: 2.174 ± 0.034	8.546LeuArg: 8.546 ± 0.074	5.563LeuSer: 5.563 ± 0.055	6.838LeuThr: 6.838 ± 0.055	8.893LeuVal: 8.893 ± 0.08	1.272LeuTrp: 1.272 ± 0.025	1.808LeuTyr: 1.808 ± 0.032	0.008LeuXaa: 0.008 ± 0.002
Met	2.233MetAla: 2.233 ± 0.029	0.129MetCys: 0.129 ± 0.007	0.933MetAsp: 0.933 ± 0.021	0.816MetGlu: 0.816 ± 0.02	0.485MetPhe: 0.485 ± 0.017	1.343MetGly: 1.343 ± 0.022	0.356MetHis: 0.356 ± 0.013	0.676MetIle: 0.676 ± 0.017	0.459MetLys: 0.459 ± 0.014	1.742MetLeu: 1.742 ± 0.032	0.317MetMet: 0.317 ± 0.013	0.468MetAsn: 0.468 ± 0.014	1.154MetPro: 1.154 ± 0.024	0.488MetGln: 0.488 ± 0.014	1.434MetArg: 1.434 ± 0.025	1.39MetSer: 1.39 ± 0.027	1.595MetThr: 1.595 ± 0.024	1.32MetVal: 1.32 ± 0.024	0.212MetTrp: 0.212 ± 0.009	0.336MetTyr: 0.336 ± 0.013	0.001MetXaa: 0.001 ± 0.001
Asn	2.212AsnAla: 2.212 ± 0.034	0.169AsnCys: 0.169 ± 0.008	0.967AsnAsp: 0.967 ± 0.023	0.814AsnGlu: 0.814 ± 0.022	0.496AsnPhe: 0.496 ± 0.015	1.962AsnGly: 1.962 ± 0.038	0.407AsnHis: 0.407 ± 0.014	0.654AsnIle: 0.654 ± 0.02	0.43AsnLys: 0.43 ± 0.018	1.655AsnLeu: 1.655 ± 0.028	0.313AsnMet: 0.313 ± 0.012	0.426AsnAsn: 0.426 ± 0.016	1.329AsnPro: 1.329 ± 0.026	0.496AsnGln: 0.496 ± 0.016	1.292AsnArg: 1.292 ± 0.025	0.97AsnSer: 0.97 ± 0.022	1.176AsnThr: 1.176 ± 0.031	1.33AsnVal: 1.33 ± 0.028	0.297AsnTrp: 0.297 ± 0.013	0.408AsnTyr: 0.408 ± 0.015	0.002AsnXaa: 0.002 ± 0.001
Pro	8.434ProAla: 8.434 ± 0.071	0.333ProCys: 0.333 ± 0.014	4.52ProAsp: 4.52 ± 0.051	4.372ProGlu: 4.372 ± 0.052	1.544ProPhe: 1.544 ± 0.026	6.818ProGly: 6.818 ± 0.062	1.326ProHis: 1.326 ± 0.029	1.073ProIle: 1.073 ± 0.024	1.133ProLys: 1.133 ± 0.024	5.318ProLeu: 5.318 ± 0.053	0.994ProMet: 0.994 ± 0.022	0.834ProAsn: 0.834 ± 0.019	3.3ProPro: 3.3 ± 0.058	1.715ProGln: 1.715 ± 0.034	3.766ProArg: 3.766 ± 0.048	3.32ProSer: 3.32 ± 0.036	3.01ProThr: 3.01 ± 0.039	5.645ProVal: 5.645 ± 0.062	0.908ProTrp: 0.908 ± 0.021	1.39ProTyr: 1.39 ± 0.028	0.012ProXaa: 0.012 ± 0.002
Gln	3.53GlnAla: 3.53 ± 0.044	0.155GlnCys: 0.155 ± 0.008	1.513GlnAsp: 1.513 ± 0.026	1.55GlnGlu: 1.55 ± 0.031	0.679GlnPhe: 0.679 ± 0.015	2.35GlnGly: 2.35 ± 0.041	0.647GlnHis: 0.647 ± 0.017	1.084GlnIle: 1.084 ± 0.024	0.642GlnLys: 0.642 ± 0.021	3.042GlnLeu: 3.042 ± 0.03	0.502GlnMet: 0.502 ± 0.015	0.535GlnAsn: 0.535 ± 0.018	1.589GlnPro: 1.589 ± 0.027	1.281GlnGln: 1.281 ± 0.034	2.2GlnArg: 2.2 ± 0.036	1.258GlnSer: 1.258 ± 0.026	1.259GlnThr: 1.259 ± 0.027	2.281GlnVal: 2.281 ± 0.036	0.445GlnTrp: 0.445 ± 0.016	0.594GlnTyr: 0.594 ± 0.022	0.004GlnXaa: 0.004 ± 0.002
Arg	9.504ArgAla: 9.504 ± 0.079	0.566ArgCys: 0.566 ± 0.018	4.201ArgAsp: 4.201 ± 0.042	4.574ArgGlu: 4.574 ± 0.055	2.276ArgPhe: 2.276 ± 0.033	5.864ArgGly: 5.864 ± 0.062	2.03ArgHis: 2.03 ± 0.032	3.345ArgIle: 3.345 ± 0.041	1.685ArgLys: 1.685 ± 0.03	8.465ArgLeu: 8.465 ± 0.091	1.747ArgMet: 1.747 ± 0.029	1.44ArgAsn: 1.44 ± 0.027	4.768ArgPro: 4.768 ± 0.063	2.161ArgGln: 2.161 ± 0.035	7.528ArgArg: 7.528 ± 0.091	4.4ArgSer: 4.4 ± 0.047	5.885ArgThr: 5.885 ± 0.056	5.725ArgVal: 5.725 ± 0.055	1.351ArgTrp: 1.351 ± 0.027	1.792ArgTyr: 1.792 ± 0.029	0.009ArgXaa: 0.009 ± 0.002
Ser	7.062SerAla: 7.062 ± 0.072	0.425SerCys: 0.425 ± 0.013	2.917SerAsp: 2.917 ± 0.042	2.557SerGlu: 2.557 ± 0.038	1.585SerPhe: 1.585 ± 0.026	6.343SerGly: 6.343 ± 0.061	1.067SerHis: 1.067 ± 0.02	1.485SerIle: 1.485 ± 0.031	1.085SerLys: 1.085 ± 0.03	4.991SerLeu: 4.991 ± 0.048	1.153SerMet: 1.153 ± 0.022	0.905SerAsn: 0.905 ± 0.026	3.272SerPro: 3.272 ± 0.041	1.278SerGln: 1.278 ± 0.027	3.913SerArg: 3.913 ± 0.041	3.125SerSer: 3.125 ± 0.051	3.298SerThr: 3.298 ± 0.046	4.667SerVal: 4.667 ± 0.045	0.956SerTrp: 0.956 ± 0.019	1.271SerTyr: 1.271 ± 0.03	0.005SerXaa: 0.005 ± 0.001
Thr	9.028ThrAla: 9.028 ± 0.065	0.408ThrCys: 0.408 ± 0.014	3.827ThrAsp: 3.827 ± 0.049	3.441ThrGlu: 3.441 ± 0.042	1.7ThrPhe: 1.7 ± 0.029	7.14ThrGly: 7.14 ± 0.062	1.199ThrHis: 1.199 ± 0.023	1.621ThrIle: 1.621 ± 0.034	1.168ThrLys: 1.168 ± 0.024	5.801ThrLeu: 5.801 ± 0.058	0.967ThrMet: 0.967 ± 0.021	0.983ThrAsn: 0.983 ± 0.024	3.995ThrPro: 3.995 ± 0.043	1.326ThrGln: 1.326 ± 0.032	3.922ThrArg: 3.922 ± 0.051	3.323ThrSer: 3.323 ± 0.042	3.94ThrThr: 3.94 ± 0.058	6.307ThrVal: 6.307 ± 0.054	0.949ThrTrp: 0.949 ± 0.022	1.384ThrTyr: 1.384 ± 0.034	0.007ThrXaa: 0.007 ± 0.002
Val	10.417ValAla: 10.417 ± 0.088	0.742ValCys: 0.742 ± 0.018	4.969ValAsp: 4.969 ± 0.049	4.766ValGlu: 4.766 ± 0.052	2.453ValPhe: 2.453 ± 0.035	6.442ValGly: 6.442 ± 0.057	2.032ValHis: 2.032 ± 0.033	2.853ValIle: 2.853 ± 0.048	1.75ValLys: 1.75 ± 0.034	9.643ValLeu: 9.643 ± 0.087	1.521ValMet: 1.521 ± 0.026	1.649ValAsn: 1.649 ± 0.03	5.322ValPro: 5.322 ± 0.046	2.138ValGln: 2.138 ± 0.029	7.115ValArg: 7.115 ± 0.065	4.597ValSer: 4.597 ± 0.047	5.814ValThr: 5.814 ± 0.053	8.062ValVal: 8.062 ± 0.089	1.129ValTrp: 1.129 ± 0.024	1.577ValTyr: 1.577 ± 0.026	0.013ValXaa: 0.013 ± 0.003
Trp	1.621TrpAla: 1.621 ± 0.025	0.146TrpCys: 0.146 ± 0.008	0.826TrpAsp: 0.826 ± 0.022	0.723TrpGlu: 0.723 ± 0.019	0.494TrpPhe: 0.494 ± 0.014	1.05TrpGly: 1.05 ± 0.022	0.357TrpHis: 0.357 ± 0.013	0.571TrpIle: 0.571 ± 0.018	0.386TrpLys: 0.386 ± 0.016	1.686TrpLeu: 1.686 ± 0.03	0.303TrpMet: 0.303 ± 0.011	0.426TrpAsn: 0.426 ± 0.015	0.785TrpPro: 0.785 ± 0.019	0.637TrpGln: 0.637 ± 0.018	1.25TrpArg: 1.25 ± 0.023	0.97TrpSer: 0.97 ± 0.023	1.063TrpThr: 1.063 ± 0.021	0.999TrpVal: 0.999 ± 0.023	0.327TrpTrp: 0.327 ± 0.013	0.36TrpTyr: 0.36 ± 0.012	0.001TrpXaa: 0.001 ± 0.001
Tyr	2.793TyrAla: 2.793 ± 0.033	0.175TyrCys: 0.175 ± 0.01	1.496TyrAsp: 1.496 ± 0.034	1.284TyrGlu: 1.284 ± 0.026	0.644TyrPhe: 0.644 ± 0.016	2.252TyrGly: 2.252 ± 0.036	0.386TyrHis: 0.386 ± 0.013	0.504TyrIle: 0.504 ± 0.016	0.392TyrLys: 0.392 ± 0.015	2.033TyrLeu: 2.033 ± 0.034	0.254TyrMet: 0.254 ± 0.012	0.397TyrAsn: 0.397 ± 0.017	1.022TyrPro: 1.022 ± 0.024	0.547TyrGln: 0.547 ± 0.016	1.822TyrArg: 1.822 ± 0.034	1.008TyrSer: 1.008 ± 0.024	1.271TyrThr: 1.271 ± 0.029	1.649TyrVal: 1.649 ± 0.031	0.349TyrTrp: 0.349 ± 0.012	0.455TyrTyr: 0.455 ± 0.016	0.001TyrXaa: 0.001 ± 0.001
Xaa	0.024XaaAla: 0.024 ± 0.004	0.0XaaCys: 0.0 ± 0.0	0.008XaaAsp: 0.008 ± 0.002	0.003XaaGlu: 0.003 ± 0.001	0.001XaaPhe: 0.001 ± 0.001	0.02XaaGly: 0.02 ± 0.003	0.003XaaHis: 0.003 ± 0.001	0.001XaaIle: 0.001 ± 0.001	0.0XaaLys: 0.0 ± 0.0	0.013XaaLeu: 0.013 ± 0.003	0.0XaaMet: 0.0 ± 0.0	0.001XaaAsn: 0.001 ± 0.001	0.007XaaPro: 0.007 ± 0.002	0.002XaaGln: 0.002 ± 0.001	0.009XaaArg: 0.009 ± 0.002	0.004XaaSer: 0.004 ± 0.001	0.006XaaThr: 0.006 ± 0.002	0.01XaaVal: 0.01 ± 0.002	0.0XaaTrp: 0.0 ± 0.0	0.0XaaTyr: 0.0 ± 0.0	0.004XaaXaa: 0.004 ± 0.002

Statistics based on 7000 proteins (2235303 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

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

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