Amino acid dipepetide frequency for Thermosynechococcus elongatus (strain BP-1)

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	11.769AlaAla: 11.769 ± 0.163	0.998AlaCys: 0.998 ± 0.038	4.254AlaAsp: 4.254 ± 0.095	5.88AlaGlu: 5.88 ± 0.104	3.028AlaPhe: 3.028 ± 0.068	6.498AlaGly: 6.498 ± 0.12	1.878AlaHis: 1.878 ± 0.055	6.849AlaIle: 6.849 ± 0.097	3.493AlaLys: 3.493 ± 0.08	11.704AlaLeu: 11.704 ± 0.168	2.146AlaMet: 2.146 ± 0.053	3.041AlaAsn: 3.041 ± 0.087	4.31AlaPro: 4.31 ± 0.077	5.494AlaGln: 5.494 ± 0.095	5.135AlaArg: 5.135 ± 0.1	4.43AlaSer: 4.43 ± 0.072	5.634AlaThr: 5.634 ± 0.091	7.034AlaVal: 7.034 ± 0.107	1.316AlaTrp: 1.316 ± 0.045	2.804AlaTyr: 2.804 ± 0.07	0.0AlaXaa: 0.0 ± 0.0
Cys	0.781CysAla: 0.781 ± 0.032	0.208CysCys: 0.208 ± 0.018	0.624CysAsp: 0.624 ± 0.029	0.524CysGlu: 0.524 ± 0.026	0.434CysPhe: 0.434 ± 0.024	1.133CysGly: 1.133 ± 0.047	0.379CysHis: 0.379 ± 0.021	0.462CysIle: 0.462 ± 0.025	0.238CysLys: 0.238 ± 0.018	1.275CysLeu: 1.275 ± 0.038	0.167CysMet: 0.167 ± 0.018	0.309CysAsn: 0.309 ± 0.018	0.776CysPro: 0.776 ± 0.035	0.768CysGln: 0.768 ± 0.048	0.874CysArg: 0.874 ± 0.035	0.58CysSer: 0.58 ± 0.043	0.515CysThr: 0.515 ± 0.024	0.717CysVal: 0.717 ± 0.032	0.197CysTrp: 0.197 ± 0.018	0.363CysTyr: 0.363 ± 0.023	0.0CysXaa: 0.0 ± 0.0
Asp	3.694AspAla: 3.694 ± 0.074	0.528AspCys: 0.528 ± 0.026	1.664AspAsp: 1.664 ± 0.054	2.27AspGlu: 2.27 ± 0.07	1.842AspPhe: 1.842 ± 0.054	2.686AspGly: 2.686 ± 0.066	0.981AspHis: 0.981 ± 0.039	2.403AspIle: 2.403 ± 0.059	1.054AspLys: 1.054 ± 0.05	5.865AspLeu: 5.865 ± 0.097	0.622AspMet: 0.622 ± 0.032	1.105AspAsn: 1.105 ± 0.038	3.1AspPro: 3.1 ± 0.071	2.115AspGln: 2.115 ± 0.053	4.999AspArg: 4.999 ± 0.073	1.977AspSer: 1.977 ± 0.05	2.112AspThr: 2.112 ± 0.056	3.018AspVal: 3.018 ± 0.063	0.936AspTrp: 0.936 ± 0.036	1.593AspTyr: 1.593 ± 0.042	0.0AspXaa: 0.0 ± 0.0
Glu	6.124GluAla: 6.124 ± 0.106	0.488GluCys: 0.488 ± 0.024	2.252GluAsp: 2.252 ± 0.054	3.707GluGlu: 3.707 ± 0.09	2.0GluPhe: 2.0 ± 0.058	3.567GluGly: 3.567 ± 0.086	1.199GluHis: 1.199 ± 0.037	3.697GluIle: 3.697 ± 0.066	2.225GluLys: 2.225 ± 0.061	7.094GluLeu: 7.094 ± 0.103	1.315GluMet: 1.315 ± 0.038	1.602GluAsn: 1.602 ± 0.046	2.884GluPro: 2.884 ± 0.071	3.557GluGln: 3.557 ± 0.084	4.221GluArg: 4.221 ± 0.07	2.529GluSer: 2.529 ± 0.066	3.382GluThr: 3.382 ± 0.07	4.382GluVal: 4.382 ± 0.09	0.909GluTrp: 0.909 ± 0.036	1.447GluTyr: 1.447 ± 0.044	0.0GluXaa: 0.0 ± 0.0
Phe	3.157PheAla: 3.157 ± 0.072	0.569PheCys: 0.569 ± 0.027	1.947PheAsp: 1.947 ± 0.059	1.769PheGlu: 1.769 ± 0.053	1.56PhePhe: 1.56 ± 0.046	2.83PheGly: 2.83 ± 0.063	0.73PheHis: 0.73 ± 0.03	1.816PheIle: 1.816 ± 0.06	0.885PheLys: 0.885 ± 0.032	4.153PheLeu: 4.153 ± 0.07	0.644PheMet: 0.644 ± 0.027	1.285PheAsn: 1.285 ± 0.041	1.815PhePro: 1.815 ± 0.046	1.665PheGln: 1.665 ± 0.053	2.057PheArg: 2.057 ± 0.046	2.155PheSer: 2.155 ± 0.049	1.868PheThr: 1.868 ± 0.048	2.356PheVal: 2.356 ± 0.066	0.696PheTrp: 0.696 ± 0.033	1.281PheTyr: 1.281 ± 0.04	0.0PheXaa: 0.0 ± 0.0
Gly	5.86GlyAla: 5.86 ± 0.115	0.972GlyCys: 0.972 ± 0.035	3.702GlyAsp: 3.702 ± 0.076	4.149GlyGlu: 4.149 ± 0.081	2.838GlyPhe: 2.838 ± 0.065	5.205GlyGly: 5.205 ± 0.116	1.681GlyHis: 1.681 ± 0.049	4.873GlyIle: 4.873 ± 0.134	2.761GlyLys: 2.761 ± 0.068	8.027GlyLeu: 8.027 ± 0.126	1.806GlyMet: 1.806 ± 0.048	2.318GlyAsn: 2.318 ± 0.117	1.932GlyPro: 1.932 ± 0.058	3.979GlyGln: 3.979 ± 0.083	4.269GlyArg: 4.269 ± 0.086	3.85GlySer: 3.85 ± 0.084	4.047GlyThr: 4.047 ± 0.087	5.443GlyVal: 5.443 ± 0.084	1.411GlyTrp: 1.411 ± 0.052	2.399GlyTyr: 2.399 ± 0.059	0.0GlyXaa: 0.0 ± 0.0
His	1.517HisAla: 1.517 ± 0.05	0.423HisCys: 0.423 ± 0.022	0.788HisAsp: 0.788 ± 0.035	0.929HisGlu: 0.929 ± 0.033	0.801HisPhe: 0.801 ± 0.034	1.44HisGly: 1.44 ± 0.048	0.872HisHis: 0.872 ± 0.038	1.096HisIle: 1.096 ± 0.036	0.491HisLys: 0.491 ± 0.024	3.201HisLeu: 3.201 ± 0.072	0.249HisMet: 0.249 ± 0.019	0.524HisAsn: 0.524 ± 0.027	1.872HisPro: 1.872 ± 0.058	1.375HisGln: 1.375 ± 0.048	1.649HisArg: 1.649 ± 0.055	1.194HisSer: 1.194 ± 0.04	1.125HisThr: 1.125 ± 0.036	1.081HisVal: 1.081 ± 0.041	0.57HisTrp: 0.57 ± 0.028	0.828HisTyr: 0.828 ± 0.039	0.0HisXaa: 0.0 ± 0.0
Ile	7.082IleAla: 7.082 ± 0.111	0.679IleCys: 0.679 ± 0.031	2.986IleAsp: 2.986 ± 0.067	3.563IleGlu: 3.563 ± 0.074	1.952IlePhe: 1.952 ± 0.055	4.04IleGly: 4.04 ± 0.079	1.342IleHis: 1.342 ± 0.045	2.522IleIle: 2.522 ± 0.062	1.53IleLys: 1.53 ± 0.051	6.092IleLeu: 6.092 ± 0.101	0.67IleMet: 0.67 ± 0.032	1.643IleAsn: 1.643 ± 0.056	3.322IlePro: 3.322 ± 0.07	2.661IleGln: 2.661 ± 0.069	3.371IleArg: 3.371 ± 0.079	2.882IleSer: 2.882 ± 0.061	3.105IleThr: 3.105 ± 0.063	3.761IleVal: 3.761 ± 0.069	0.688IleTrp: 0.688 ± 0.031	1.577IleTyr: 1.577 ± 0.05	0.0IleXaa: 0.0 ± 0.0
Lys	3.343LysAla: 3.343 ± 0.085	0.279LysCys: 0.279 ± 0.022	1.38LysAsp: 1.38 ± 0.049	2.051LysGlu: 2.051 ± 0.058	0.801LysPhe: 0.801 ± 0.036	2.269LysGly: 2.269 ± 0.053	0.552LysHis: 0.552 ± 0.025	2.006LysIle: 2.006 ± 0.06	1.268LysLys: 1.268 ± 0.052	3.252LysLeu: 3.252 ± 0.069	0.617LysMet: 0.617 ± 0.031	1.028LysAsn: 1.028 ± 0.039	1.65LysPro: 1.65 ± 0.056	1.546LysGln: 1.546 ± 0.052	1.911LysArg: 1.911 ± 0.052	1.575LysSer: 1.575 ± 0.047	1.982LysThr: 1.982 ± 0.052	2.311LysVal: 2.311 ± 0.062	0.347LysTrp: 0.347 ± 0.021	0.81LysTyr: 0.81 ± 0.034	0.0LysXaa: 0.0 ± 0.0
Leu	12.589LeuAla: 12.589 ± 0.162	1.25LeuCys: 1.25 ± 0.044	5.22LeuAsp: 5.22 ± 0.084	7.712LeuGlu: 7.712 ± 0.132	3.741LeuPhe: 3.741 ± 0.083	9.244LeuGly: 9.244 ± 0.121	2.387LeuHis: 2.387 ± 0.071	5.976LeuIle: 5.976 ± 0.104	4.11LeuLys: 4.11 ± 0.065	13.332LeuLeu: 13.332 ± 0.224	2.421LeuMet: 2.421 ± 0.061	3.818LeuAsn: 3.818 ± 0.078	7.293LeuPro: 7.293 ± 0.114	6.514LeuGln: 6.514 ± 0.117	7.969LeuArg: 7.969 ± 0.108	7.11LeuSer: 7.11 ± 0.115	6.698LeuThr: 6.698 ± 0.092	8.003LeuVal: 8.003 ± 0.101	1.971LeuTrp: 1.971 ± 0.065	2.844LeuTyr: 2.844 ± 0.06	0.0LeuXaa: 0.0 ± 0.0
Met	2.499MetAla: 2.499 ± 0.056	0.088MetCys: 0.088 ± 0.01	0.787MetAsp: 0.787 ± 0.031	0.961MetGlu: 0.961 ± 0.037	0.495MetPhe: 0.495 ± 0.025	1.697MetGly: 1.697 ± 0.052	0.284MetHis: 0.284 ± 0.021	1.135MetIle: 1.135 ± 0.038	0.645MetLys: 0.645 ± 0.03	1.85MetLeu: 1.85 ± 0.05	0.522MetMet: 0.522 ± 0.024	0.604MetAsn: 0.604 ± 0.031	1.061MetPro: 1.061 ± 0.042	0.848MetGln: 0.848 ± 0.036	1.007MetArg: 1.007 ± 0.036	1.194MetSer: 1.194 ± 0.041	1.498MetThr: 1.498 ± 0.042	1.572MetVal: 1.572 ± 0.048	0.135MetTrp: 0.135 ± 0.013	0.308MetTyr: 0.308 ± 0.021	0.0MetXaa: 0.0 ± 0.0
Asn	2.609AsnAla: 2.609 ± 0.066	0.401AsnCys: 0.401 ± 0.026	1.067AsnAsp: 1.067 ± 0.038	1.319AsnGlu: 1.319 ± 0.055	1.227AsnPhe: 1.227 ± 0.046	2.15AsnGly: 2.15 ± 0.059	0.709AsnHis: 0.709 ± 0.029	1.536AsnIle: 1.536 ± 0.054	0.718AsnLys: 0.718 ± 0.047	3.807AsnLeu: 3.807 ± 0.09	0.447AsnMet: 0.447 ± 0.024	0.82AsnAsn: 0.82 ± 0.036	2.387AsnPro: 2.387 ± 0.055	1.549AsnGln: 1.549 ± 0.048	2.093AsnArg: 2.093 ± 0.052	1.437AsnSer: 1.437 ± 0.051	1.54AsnThr: 1.54 ± 0.087	1.803AsnVal: 1.803 ± 0.048	0.553AsnTrp: 0.553 ± 0.03	0.937AsnTyr: 0.937 ± 0.038	0.0AsnXaa: 0.0 ± 0.0
Pro	4.896ProAla: 4.896 ± 0.086	0.487ProCys: 0.487 ± 0.026	2.701ProAsp: 2.701 ± 0.063	4.356ProGlu: 4.356 ± 0.085	1.93ProPhe: 1.93 ± 0.055	3.064ProGly: 3.064 ± 0.065	1.293ProHis: 1.293 ± 0.046	2.875ProIle: 2.875 ± 0.059	1.789ProLys: 1.789 ± 0.051	7.346ProLeu: 7.346 ± 0.118	1.275ProMet: 1.275 ± 0.049	1.754ProAsn: 1.754 ± 0.061	4.144ProPro: 4.144 ± 0.123	3.71ProGln: 3.71 ± 0.075	3.0ProArg: 3.0 ± 0.072	3.121ProSer: 3.121 ± 0.07	3.518ProThr: 3.518 ± 0.085	3.872ProVal: 3.872 ± 0.074	1.058ProTrp: 1.058 ± 0.039	1.575ProTyr: 1.575 ± 0.048	0.0ProXaa: 0.0 ± 0.0
Gln	5.739GlnAla: 5.739 ± 0.104	0.483GlnCys: 0.483 ± 0.032	1.755GlnAsp: 1.755 ± 0.051	3.587GlnGlu: 3.587 ± 0.08	1.86GlnPhe: 1.86 ± 0.048	4.376GlnGly: 4.376 ± 0.091	1.116GlnHis: 1.116 ± 0.037	2.944GlnIle: 2.944 ± 0.057	1.803GlnLys: 1.803 ± 0.053	6.818GlnLeu: 6.818 ± 0.111	1.074GlnMet: 1.074 ± 0.04	1.177GlnAsn: 1.177 ± 0.06	3.345GlnPro: 3.345 ± 0.077	4.812GlnGln: 4.812 ± 0.134	4.92GlnArg: 4.92 ± 0.093	2.379GlnSer: 2.379 ± 0.061	3.079GlnThr: 3.079 ± 0.067	4.306GlnVal: 4.306 ± 0.088	1.234GlnTrp: 1.234 ± 0.044	1.127GlnTyr: 1.127 ± 0.038	0.0GlnXaa: 0.0 ± 0.0
Arg	5.092ArgAla: 5.092 ± 0.09	0.809ArgCys: 0.809 ± 0.034	3.283ArgAsp: 3.283 ± 0.058	3.777ArgGlu: 3.777 ± 0.078	2.592ArgPhe: 2.592 ± 0.064	4.002ArgGly: 4.002 ± 0.083	1.71ArgHis: 1.71 ± 0.048	3.415ArgIle: 3.415 ± 0.068	1.785ArgLys: 1.785 ± 0.059	8.346ArgLeu: 8.346 ± 0.109	1.151ArgMet: 1.151 ± 0.046	1.816ArgAsn: 1.816 ± 0.056	3.607ArgPro: 3.607 ± 0.08	5.202ArgGln: 5.202 ± 0.096	4.693ArgArg: 4.693 ± 0.089	3.645ArgSer: 3.645 ± 0.067	2.929ArgThr: 2.929 ± 0.063	4.271ArgVal: 4.271 ± 0.071	1.499ArgTrp: 1.499 ± 0.052	2.418ArgTyr: 2.418 ± 0.06	0.0ArgXaa: 0.0 ± 0.0
Ser	4.377SerAla: 4.377 ± 0.071	0.535SerCys: 0.535 ± 0.026	2.764SerAsp: 2.764 ± 0.063	2.807SerGlu: 2.807 ± 0.068	1.864SerPhe: 1.864 ± 0.044	4.062SerGly: 4.062 ± 0.085	1.314SerHis: 1.314 ± 0.041	2.45SerIle: 2.45 ± 0.065	1.346SerLys: 1.346 ± 0.045	6.728SerLeu: 6.728 ± 0.095	1.072SerMet: 1.072 ± 0.04	1.372SerAsn: 1.372 ± 0.045	3.605SerPro: 3.605 ± 0.073	2.909SerGln: 2.909 ± 0.061	3.402SerArg: 3.402 ± 0.076	2.988SerSer: 2.988 ± 0.069	2.655SerThr: 2.655 ± 0.061	3.371SerVal: 3.371 ± 0.064	0.774SerTrp: 0.774 ± 0.033	1.375SerTyr: 1.375 ± 0.044	0.0SerXaa: 0.0 ± 0.0
Thr	5.816ThrAla: 5.816 ± 0.091	0.685ThrCys: 0.685 ± 0.073	2.204ThrAsp: 2.204 ± 0.052	2.779ThrGlu: 2.779 ± 0.066	1.974ThrPhe: 1.974 ± 0.046	4.066ThrGly: 4.066 ± 0.081	1.107ThrHis: 1.107 ± 0.036	2.983ThrIle: 2.983 ± 0.059	1.344ThrLys: 1.344 ± 0.043	7.535ThrLeu: 7.535 ± 0.101	0.854ThrMet: 0.854 ± 0.033	1.453ThrAsn: 1.453 ± 0.036	4.349ThrPro: 4.349 ± 0.082	2.321ThrGln: 2.321 ± 0.051	2.622ThrArg: 2.622 ± 0.056	2.616ThrSer: 2.616 ± 0.065	3.443ThrThr: 3.443 ± 0.067	4.415ThrVal: 4.415 ± 0.074	0.736ThrTrp: 0.736 ± 0.036	1.73ThrTyr: 1.73 ± 0.048	0.0ThrXaa: 0.0 ± 0.0
Val	7.412ValAla: 7.412 ± 0.123	0.801ValCys: 0.801 ± 0.032	3.384ValAsp: 3.384 ± 0.064	4.068ValGlu: 4.068 ± 0.071	2.451ValPhe: 2.451 ± 0.06	5.385ValGly: 5.385 ± 0.094	1.294ValHis: 1.294 ± 0.047	4.375ValIle: 4.375 ± 0.081	2.392ValLys: 2.392 ± 0.054	7.665ValLeu: 7.665 ± 0.106	1.507ValMet: 1.507 ± 0.041	2.247ValAsn: 2.247 ± 0.054	3.759ValPro: 3.759 ± 0.069	3.24ValGln: 3.24 ± 0.065	4.046ValArg: 4.046 ± 0.085	3.792ValSer: 3.792 ± 0.061	4.001ValThr: 4.001 ± 0.076	5.59ValVal: 5.59 ± 0.103	0.888ValTrp: 0.888 ± 0.039	1.797ValTyr: 1.797 ± 0.044	0.0ValXaa: 0.0 ± 0.0
Trp	1.125TrpAla: 1.125 ± 0.044	0.196TrpCys: 0.196 ± 0.017	0.547TrpAsp: 0.547 ± 0.028	0.8TrpGlu: 0.8 ± 0.031	0.648TrpPhe: 0.648 ± 0.035	1.408TrpGly: 1.408 ± 0.051	0.466TrpHis: 0.466 ± 0.026	0.794TrpIle: 0.794 ± 0.03	0.387TrpLys: 0.387 ± 0.027	2.54TrpLeu: 2.54 ± 0.085	0.241TrpMet: 0.241 ± 0.019	0.388TrpAsn: 0.388 ± 0.023	0.717TrpPro: 0.717 ± 0.035	2.063TrpGln: 2.063 ± 0.064	1.247TrpArg: 1.247 ± 0.039	0.901TrpSer: 0.901 ± 0.036	0.543TrpThr: 0.543 ± 0.03	1.066TrpVal: 1.066 ± 0.041	0.374TrpTrp: 0.374 ± 0.026	0.453TrpTyr: 0.453 ± 0.028	0.0TrpXaa: 0.0 ± 0.0
Tyr	2.213TyrAla: 2.213 ± 0.046	0.447TyrCys: 0.447 ± 0.025	1.255TyrAsp: 1.255 ± 0.034	1.573TyrGlu: 1.573 ± 0.046	1.199TyrPhe: 1.199 ± 0.042	2.403TyrGly: 2.403 ± 0.061	0.731TyrHis: 0.731 ± 0.033	1.263TyrIle: 1.263 ± 0.04	0.713TyrLys: 0.713 ± 0.036	3.571TyrLeu: 3.571 ± 0.067	0.387TyrMet: 0.387 ± 0.023	0.802TyrAsn: 0.802 ± 0.031	1.837TyrPro: 1.837 ± 0.05	1.608TyrGln: 1.608 ± 0.044	2.556TyrArg: 2.556 ± 0.059	1.414TyrSer: 1.414 ± 0.037	1.359TyrThr: 1.359 ± 0.047	1.723TyrVal: 1.723 ± 0.054	0.613TyrTrp: 0.613 ± 0.029	0.898TyrTyr: 0.898 ± 0.033	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 2452 proteins (770355 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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