Amino acid dipepetide frequency for Streptomyces albulus

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	23.673AlaAla: 23.673 ± 0.155	1.191AlaCys: 1.191 ± 0.021	8.804AlaAsp: 8.804 ± 0.069	8.456AlaGlu: 8.456 ± 0.082	3.677AlaPhe: 3.677 ± 0.041	13.916AlaGly: 13.916 ± 0.102	3.333AlaHis: 3.333 ± 0.04	3.217AlaIle: 3.217 ± 0.043	2.713AlaLys: 2.713 ± 0.05	15.71AlaLeu: 15.71 ± 0.105	2.494AlaMet: 2.494 ± 0.032	1.921AlaAsn: 1.921 ± 0.031	8.431AlaPro: 8.431 ± 0.073	3.933AlaGln: 3.933 ± 0.045	11.241AlaArg: 11.241 ± 0.08	5.603AlaSer: 5.603 ± 0.053	7.473AlaThr: 7.473 ± 0.068	12.603AlaVal: 12.603 ± 0.086	1.872AlaTrp: 1.872 ± 0.029	2.623AlaTyr: 2.623 ± 0.034	0.0AlaXaa: 0.0 ± 0.0
Cys	1.247CysAla: 1.247 ± 0.026	0.117CysCys: 0.117 ± 0.008	0.494CysAsp: 0.494 ± 0.015	0.378CysGlu: 0.378 ± 0.014	0.226CysPhe: 0.226 ± 0.01	1.031CysGly: 1.031 ± 0.021	0.203CysHis: 0.203 ± 0.008	0.178CysIle: 0.178 ± 0.009	0.117CysLys: 0.117 ± 0.007	0.791CysLeu: 0.791 ± 0.019	0.131CysMet: 0.131 ± 0.007	0.131CysAsn: 0.131 ± 0.007	0.544CysPro: 0.544 ± 0.016	0.186CysGln: 0.186 ± 0.01	0.708CysArg: 0.708 ± 0.018	0.443CysSer: 0.443 ± 0.014	0.583CysThr: 0.583 ± 0.016	0.655CysVal: 0.655 ± 0.016	0.131CysTrp: 0.131 ± 0.007	0.163CysTyr: 0.163 ± 0.008	0.0CysXaa: 0.0 ± 0.0
Asp	8.398AspAla: 8.398 ± 0.071	0.442AspCys: 0.442 ± 0.014	3.636AspAsp: 3.636 ± 0.045	3.536AspGlu: 3.536 ± 0.037	1.598AspPhe: 1.598 ± 0.025	6.605AspGly: 6.605 ± 0.059	1.553AspHis: 1.553 ± 0.027	1.525AspIle: 1.525 ± 0.027	1.019AspLys: 1.019 ± 0.023	6.144AspLeu: 6.144 ± 0.054	0.737AspMet: 0.737 ± 0.017	0.82AspAsn: 0.82 ± 0.02	4.542AspPro: 4.542 ± 0.044	1.555AspGln: 1.555 ± 0.026	5.292AspArg: 5.292 ± 0.051	2.143AspSer: 2.143 ± 0.039	2.991AspThr: 2.991 ± 0.033	4.737AspVal: 4.737 ± 0.044	0.998AspTrp: 0.998 ± 0.018	1.047AspTyr: 1.047 ± 0.018	0.0AspXaa: 0.0 ± 0.0
Glu	6.839GluAla: 6.839 ± 0.078	0.363GluCys: 0.363 ± 0.012	2.546GluAsp: 2.546 ± 0.036	3.244GluGlu: 3.244 ± 0.046	1.362GluPhe: 1.362 ± 0.026	3.971GluGly: 3.971 ± 0.045	1.498GluHis: 1.498 ± 0.021	1.981GluIle: 1.981 ± 0.031	1.17GluLys: 1.17 ± 0.027	6.653GluLeu: 6.653 ± 0.062	0.809GluMet: 0.809 ± 0.021	0.872GluAsn: 0.872 ± 0.02	3.212GluPro: 3.212 ± 0.044	2.096GluGln: 2.096 ± 0.038	5.497GluArg: 5.497 ± 0.057	2.146GluSer: 2.146 ± 0.029	2.626GluThr: 2.626 ± 0.032	4.374GluVal: 4.374 ± 0.047	0.688GluTrp: 0.688 ± 0.018	0.923GluTyr: 0.923 ± 0.02	0.0GluXaa: 0.0 ± 0.0
Phe	3.838PheAla: 3.838 ± 0.044	0.272PheCys: 0.272 ± 0.01	1.911PheAsp: 1.911 ± 0.027	1.281PheGlu: 1.281 ± 0.021	0.872PhePhe: 0.872 ± 0.02	2.996PheGly: 2.996 ± 0.033	0.645PheHis: 0.645 ± 0.017	0.612PheIle: 0.612 ± 0.017	0.45PheLys: 0.45 ± 0.015	2.59PheLeu: 2.59 ± 0.036	0.362PheMet: 0.362 ± 0.014	0.513PheAsn: 0.513 ± 0.015	1.453PhePro: 1.453 ± 0.025	0.637PheGln: 0.637 ± 0.016	1.857PheArg: 1.857 ± 0.029	1.407PheSer: 1.407 ± 0.025	1.959PheThr: 1.959 ± 0.03	2.165PheVal: 2.165 ± 0.031	0.418PheTrp: 0.418 ± 0.012	0.547PheTyr: 0.547 ± 0.015	0.0PheXaa: 0.0 ± 0.0
Gly	12.173GlyAla: 12.173 ± 0.081	0.916GlyCys: 0.916 ± 0.021	4.996GlyAsp: 4.996 ± 0.043	4.712GlyGlu: 4.712 ± 0.048	2.799GlyPhe: 2.799 ± 0.032	9.093GlyGly: 9.093 ± 0.107	2.473GlyHis: 2.473 ± 0.035	3.321GlyIle: 3.321 ± 0.042	2.252GlyLys: 2.252 ± 0.037	9.386GlyLeu: 9.386 ± 0.076	1.998GlyMet: 1.998 ± 0.031	1.714GlyAsn: 1.714 ± 0.033	5.8GlyPro: 5.8 ± 0.059	2.71GlyGln: 2.71 ± 0.036	8.222GlyArg: 8.222 ± 0.077	5.061GlySer: 5.061 ± 0.05	6.502GlyThr: 6.502 ± 0.064	7.294GlyVal: 7.294 ± 0.071	1.664GlyTrp: 1.664 ± 0.027	2.203GlyTyr: 2.203 ± 0.031	0.0GlyXaa: 0.0 ± 0.0
His	3.057HisAla: 3.057 ± 0.039	0.245HisCys: 0.245 ± 0.01	1.531HisAsp: 1.531 ± 0.025	1.195HisGlu: 1.195 ± 0.022	0.701HisPhe: 0.701 ± 0.015	2.688HisGly: 2.688 ± 0.032	0.84HisHis: 0.84 ± 0.02	0.566HisIle: 0.566 ± 0.016	0.36HisLys: 0.36 ± 0.014	2.748HisLeu: 2.748 ± 0.036	0.343HisMet: 0.343 ± 0.011	0.356HisAsn: 0.356 ± 0.012	2.111HisPro: 2.111 ± 0.032	0.777HisGln: 0.777 ± 0.022	2.446HisArg: 2.446 ± 0.034	1.003HisSer: 1.003 ± 0.024	1.412HisThr: 1.412 ± 0.023	1.784HisVal: 1.784 ± 0.029	0.414HisTrp: 0.414 ± 0.013	0.505HisTyr: 0.505 ± 0.016	0.0HisXaa: 0.0 ± 0.0
Ile	4.599IleAla: 4.599 ± 0.049	0.284IleCys: 0.284 ± 0.01	2.101IleAsp: 2.101 ± 0.028	1.803IleGlu: 1.803 ± 0.026	0.589IlePhe: 0.589 ± 0.017	3.453IleGly: 3.453 ± 0.046	0.564IleHis: 0.564 ± 0.016	0.767IleIle: 0.767 ± 0.02	0.694IleLys: 0.694 ± 0.02	2.103IleLeu: 2.103 ± 0.032	0.383IleMet: 0.383 ± 0.012	0.66IleAsn: 0.66 ± 0.018	1.629IlePro: 1.629 ± 0.028	0.658IleGln: 0.658 ± 0.017	2.107IleArg: 2.107 ± 0.033	1.508IleSer: 1.508 ± 0.026	2.034IleThr: 2.034 ± 0.033	2.473IleVal: 2.473 ± 0.034	0.341IleTrp: 0.341 ± 0.013	0.446IleTyr: 0.446 ± 0.014	0.0IleXaa: 0.0 ± 0.0
Lys	2.568LysAla: 2.568 ± 0.043	0.102LysCys: 0.102 ± 0.006	1.263LysAsp: 1.263 ± 0.028	1.076LysGlu: 1.076 ± 0.028	0.437LysPhe: 0.437 ± 0.012	1.679LysGly: 1.679 ± 0.031	0.417LysHis: 0.417 ± 0.013	0.787LysIle: 0.787 ± 0.021	0.771LysLys: 0.771 ± 0.029	1.808LysLeu: 1.808 ± 0.037	0.375LysMet: 0.375 ± 0.013	0.468LysAsn: 0.468 ± 0.015	1.245LysPro: 1.245 ± 0.025	0.636LysGln: 0.636 ± 0.019	1.332LysArg: 1.332 ± 0.027	1.026LysSer: 1.026 ± 0.025	1.173LysThr: 1.173 ± 0.028	1.719LysVal: 1.719 ± 0.033	0.25LysTrp: 0.25 ± 0.009	0.387LysTyr: 0.387 ± 0.015	0.0LysXaa: 0.0 ± 0.0
Leu	16.262LeuAla: 16.262 ± 0.119	0.91LeuCys: 0.91 ± 0.021	6.725LeuAsp: 6.725 ± 0.059	4.236LeuGlu: 4.236 ± 0.048	2.61LeuPhe: 2.61 ± 0.036	9.233LeuGly: 9.233 ± 0.073	2.616LeuHis: 2.616 ± 0.035	3.157LeuIle: 3.157 ± 0.043	1.812LeuLys: 1.812 ± 0.036	11.53LeuLeu: 11.53 ± 0.087	1.576LeuMet: 1.576 ± 0.026	1.626LeuAsn: 1.626 ± 0.027	6.756LeuPro: 6.756 ± 0.06	2.263LeuGln: 2.263 ± 0.033	8.962LeuArg: 8.962 ± 0.066	5.127LeuSer: 5.127 ± 0.053	7.145LeuThr: 7.145 ± 0.071	8.846LeuVal: 8.846 ± 0.059	1.299LeuTrp: 1.299 ± 0.024	1.735LeuTyr: 1.735 ± 0.028	0.0LeuXaa: 0.0 ± 0.0
Met	2.26MetAla: 2.26 ± 0.027	0.13MetCys: 0.13 ± 0.007	0.884MetAsp: 0.884 ± 0.018	0.647MetGlu: 0.647 ± 0.017	0.408MetPhe: 0.408 ± 0.013	1.339MetGly: 1.339 ± 0.027	0.347MetHis: 0.347 ± 0.012	0.58MetIle: 0.58 ± 0.017	0.375MetLys: 0.375 ± 0.012	1.596MetLeu: 1.596 ± 0.023	0.283MetMet: 0.283 ± 0.01	0.408MetAsn: 0.408 ± 0.013	1.122MetPro: 1.122 ± 0.023	0.426MetGln: 0.426 ± 0.013	1.347MetArg: 1.347 ± 0.022	1.221MetSer: 1.221 ± 0.02	1.534MetThr: 1.534 ± 0.024	1.261MetVal: 1.261 ± 0.026	0.209MetTrp: 0.209 ± 0.009	0.296MetTyr: 0.296 ± 0.011	0.0MetXaa: 0.0 ± 0.0
Asn	2.147AsnAla: 2.147 ± 0.03	0.165AsnCys: 0.165 ± 0.008	0.898AsnAsp: 0.898 ± 0.02	0.733AsnGlu: 0.733 ± 0.016	0.439AsnPhe: 0.439 ± 0.013	1.863AsnGly: 1.863 ± 0.032	0.397AsnHis: 0.397 ± 0.013	0.549AsnIle: 0.549 ± 0.015	0.381AsnLys: 0.381 ± 0.013	1.584AsnLeu: 1.584 ± 0.029	0.268AsnMet: 0.268 ± 0.011	0.393AsnAsn: 0.393 ± 0.016	1.266AsnPro: 1.266 ± 0.028	0.502AsnGln: 0.502 ± 0.014	1.212AsnArg: 1.212 ± 0.022	0.828AsnSer: 0.828 ± 0.018	1.028AsnThr: 1.028 ± 0.024	1.292AsnVal: 1.292 ± 0.026	0.275AsnTrp: 0.275 ± 0.011	0.388AsnTyr: 0.388 ± 0.013	0.0AsnXaa: 0.0 ± 0.0
Pro	9.7ProAla: 9.7 ± 0.079	0.383ProCys: 0.383 ± 0.014	4.82ProAsp: 4.82 ± 0.047	4.254ProGlu: 4.254 ± 0.043	1.596ProPhe: 1.596 ± 0.025	6.886ProGly: 6.886 ± 0.058	1.742ProHis: 1.742 ± 0.034	1.247ProIle: 1.247 ± 0.024	1.127ProLys: 1.127 ± 0.024	5.644ProLeu: 5.644 ± 0.052	1.024ProMet: 1.024 ± 0.021	0.881ProAsn: 0.881 ± 0.02	4.134ProPro: 4.134 ± 0.062	2.079ProGln: 2.079 ± 0.043	4.507ProArg: 4.507 ± 0.054	3.127ProSer: 3.127 ± 0.041	3.702ProThr: 3.702 ± 0.042	5.538ProVal: 5.538 ± 0.047	0.956ProTrp: 0.956 ± 0.022	1.346ProTyr: 1.346 ± 0.026	0.0ProXaa: 0.0 ± 0.0
Gln	3.771GlnAla: 3.771 ± 0.051	0.206GlnCys: 0.206 ± 0.009	1.449GlnAsp: 1.449 ± 0.027	1.452GlnGlu: 1.452 ± 0.026	0.685GlnPhe: 0.685 ± 0.016	2.276GlnGly: 2.276 ± 0.032	0.812GlnHis: 0.812 ± 0.025	1.054GlnIle: 1.054 ± 0.022	0.561GlnLys: 0.561 ± 0.017	3.251GlnLeu: 3.251 ± 0.038	0.501GlnMet: 0.501 ± 0.014	0.448GlnAsn: 0.448 ± 0.013	1.817GlnPro: 1.817 ± 0.042	1.432GlnGln: 1.432 ± 0.045	2.577GlnArg: 2.577 ± 0.038	1.21GlnSer: 1.21 ± 0.023	1.303GlnThr: 1.303 ± 0.024	2.333GlnVal: 2.333 ± 0.035	0.494GlnTrp: 0.494 ± 0.015	0.554GlnTyr: 0.554 ± 0.015	0.0GlnXaa: 0.0 ± 0.0
Arg	10.857ArgAla: 10.857 ± 0.08	0.705ArgCys: 0.705 ± 0.017	4.293ArgAsp: 4.293 ± 0.045	4.442ArgGlu: 4.442 ± 0.05	2.33ArgPhe: 2.33 ± 0.029	6.116ArgGly: 6.116 ± 0.052	2.383ArgHis: 2.383 ± 0.035	3.326ArgIle: 3.326 ± 0.039	1.546ArgLys: 1.546 ± 0.03	8.982ArgLeu: 8.982 ± 0.077	1.738ArgMet: 1.738 ± 0.03	1.397ArgAsn: 1.397 ± 0.021	5.841ArgPro: 5.841 ± 0.063	2.422ArgGln: 2.422 ± 0.035	8.477ArgArg: 8.477 ± 0.082	4.139ArgSer: 4.139 ± 0.041	5.966ArgThr: 5.966 ± 0.055	5.605ArgVal: 5.605 ± 0.052	1.42ArgTrp: 1.42 ± 0.023	1.808ArgTyr: 1.808 ± 0.03	0.0ArgXaa: 0.0 ± 0.0
Ser	6.555SerAla: 6.555 ± 0.049	0.425SerCys: 0.425 ± 0.012	2.377SerAsp: 2.377 ± 0.03	2.098SerGlu: 2.098 ± 0.031	1.44SerPhe: 1.44 ± 0.023	5.563SerGly: 5.563 ± 0.05	1.036SerHis: 1.036 ± 0.019	1.262SerIle: 1.262 ± 0.024	0.908SerLys: 0.908 ± 0.023	4.501SerLeu: 4.501 ± 0.044	0.962SerMet: 0.962 ± 0.019	0.783SerAsn: 0.783 ± 0.019	3.206SerPro: 3.206 ± 0.043	1.183SerGln: 1.183 ± 0.025	3.57SerArg: 3.57 ± 0.039	2.555SerSer: 2.555 ± 0.042	2.923SerThr: 2.923 ± 0.037	3.844SerVal: 3.844 ± 0.046	0.871SerTrp: 0.871 ± 0.02	1.1SerTyr: 1.1 ± 0.023	0.0SerXaa: 0.0 ± 0.0
Thr	9.7ThrAla: 9.7 ± 0.079	0.452ThrCys: 0.452 ± 0.015	3.736ThrAsp: 3.736 ± 0.045	3.078ThrGlu: 3.078 ± 0.037	1.593ThrPhe: 1.593 ± 0.026	6.885ThrGly: 6.885 ± 0.053	1.285ThrHis: 1.285 ± 0.024	1.533ThrIle: 1.533 ± 0.027	1.108ThrLys: 1.108 ± 0.024	5.76ThrLeu: 5.76 ± 0.049	0.896ThrMet: 0.896 ± 0.021	0.951ThrAsn: 0.951 ± 0.021	4.311ThrPro: 4.311 ± 0.044	1.308ThrGln: 1.308 ± 0.024	3.951ThrArg: 3.951 ± 0.044	2.973ThrSer: 2.973 ± 0.032	4.013ThrThr: 4.013 ± 0.051	6.052ThrVal: 6.052 ± 0.049	0.867ThrTrp: 0.867 ± 0.018	1.253ThrTyr: 1.253 ± 0.025	0.0ThrXaa: 0.0 ± 0.0
Val	10.86ValAla: 10.86 ± 0.074	0.81ValCys: 0.81 ± 0.019	4.72ValAsp: 4.72 ± 0.044	4.496ValGlu: 4.496 ± 0.046	2.322ValPhe: 2.322 ± 0.031	6.455ValGly: 6.455 ± 0.063	2.097ValHis: 2.097 ± 0.028	2.658ValIle: 2.658 ± 0.032	1.51ValLys: 1.51 ± 0.032	9.724ValLeu: 9.724 ± 0.073	1.278ValMet: 1.278 ± 0.023	1.586ValAsn: 1.586 ± 0.026	5.389ValPro: 5.389 ± 0.053	2.139ValGln: 2.139 ± 0.03	7.263ValArg: 7.263 ± 0.058	3.95ValSer: 3.95 ± 0.038	5.354ValThr: 5.354 ± 0.05	7.836ValVal: 7.836 ± 0.077	1.079ValTrp: 1.079 ± 0.022	1.425ValTyr: 1.425 ± 0.025	0.0ValXaa: 0.0 ± 0.0
Trp	1.64TrpAla: 1.64 ± 0.028	0.177TrpCys: 0.177 ± 0.009	0.78TrpAsp: 0.78 ± 0.018	0.688TrpGlu: 0.688 ± 0.017	0.493TrpPhe: 0.493 ± 0.016	1.045TrpGly: 1.045 ± 0.023	0.428TrpHis: 0.428 ± 0.013	0.514TrpIle: 0.514 ± 0.015	0.327TrpLys: 0.327 ± 0.013	1.837TrpLeu: 1.837 ± 0.03	0.293TrpMet: 0.293 ± 0.011	0.333TrpAsn: 0.333 ± 0.012	0.825TrpPro: 0.825 ± 0.02	0.656TrpGln: 0.656 ± 0.016	1.395TrpArg: 1.395 ± 0.026	0.904TrpSer: 0.904 ± 0.019	0.941TrpThr: 0.941 ± 0.02	0.968TrpVal: 0.968 ± 0.023	0.334TrpTrp: 0.334 ± 0.014	0.33TrpTyr: 0.33 ± 0.012	0.0TrpXaa: 0.0 ± 0.0
Tyr	2.74TyrAla: 2.74 ± 0.034	0.166TyrCys: 0.166 ± 0.009	1.355TyrAsp: 1.355 ± 0.023	1.063TyrGlu: 1.063 ± 0.022	0.608TyrPhe: 0.608 ± 0.015	2.195TyrGly: 2.195 ± 0.033	0.413TyrHis: 0.413 ± 0.013	0.358TyrIle: 0.358 ± 0.013	0.324TyrLys: 0.324 ± 0.011	2.087TyrLeu: 2.087 ± 0.028	0.222TyrMet: 0.222 ± 0.01	0.345TyrAsn: 0.345 ± 0.013	1.059TyrPro: 1.059 ± 0.021	0.587TyrGln: 0.587 ± 0.016	1.829TyrArg: 1.829 ± 0.028	0.785TyrSer: 0.785 ± 0.02	1.042TyrThr: 1.042 ± 0.021	1.573TyrVal: 1.573 ± 0.024	0.329TyrTrp: 0.329 ± 0.013	0.414TyrTyr: 0.414 ± 0.013	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 8069 proteins (2602710 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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