Amino acid dipepetide frequency for Bacillus mesophilus

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	4.773AlaAla: 4.773 ± 0.08	0.491AlaCys: 0.491 ± 0.023	2.918AlaAsp: 2.918 ± 0.055	4.213AlaGlu: 4.213 ± 0.066	3.007AlaPhe: 3.007 ± 0.055	4.866AlaGly: 4.866 ± 0.074	1.182AlaHis: 1.182 ± 0.034	5.729AlaIle: 5.729 ± 0.088	4.25AlaLys: 4.25 ± 0.073	6.553AlaLeu: 6.553 ± 0.077	1.771AlaMet: 1.771 ± 0.034	2.643AlaAsn: 2.643 ± 0.045	1.858AlaPro: 1.858 ± 0.047	1.947AlaGln: 1.947 ± 0.044	2.373AlaArg: 2.373 ± 0.057	3.759AlaSer: 3.759 ± 0.062	3.418AlaThr: 3.418 ± 0.054	4.867AlaVal: 4.867 ± 0.07	0.564AlaTrp: 0.564 ± 0.022	2.123AlaTyr: 2.123 ± 0.038	0.0AlaXaa: 0.0 ± 0.0
Cys	0.361CysAla: 0.361 ± 0.02	0.098CysCys: 0.098 ± 0.011	0.368CysAsp: 0.368 ± 0.02	0.447CysGlu: 0.447 ± 0.024	0.288CysPhe: 0.288 ± 0.017	0.575CysGly: 0.575 ± 0.024	0.176CysHis: 0.176 ± 0.013	0.537CysIle: 0.537 ± 0.021	0.394CysLys: 0.394 ± 0.02	0.652CysLeu: 0.652 ± 0.025	0.183CysMet: 0.183 ± 0.012	0.289CysAsn: 0.289 ± 0.015	0.338CysPro: 0.338 ± 0.019	0.231CysGln: 0.231 ± 0.012	0.267CysArg: 0.267 ± 0.016	0.515CysSer: 0.515 ± 0.023	0.349CysThr: 0.349 ± 0.018	0.38CysVal: 0.38 ± 0.018	0.068CysTrp: 0.068 ± 0.006	0.266CysTyr: 0.266 ± 0.013	0.0CysXaa: 0.0 ± 0.0
Asp	2.784AspAla: 2.784 ± 0.052	0.366AspCys: 0.366 ± 0.016	2.302AspAsp: 2.302 ± 0.055	4.328AspGlu: 4.328 ± 0.071	2.393AspPhe: 2.393 ± 0.047	3.22AspGly: 3.22 ± 0.056	1.287AspHis: 1.287 ± 0.032	3.992AspIle: 3.992 ± 0.068	2.74AspLys: 2.74 ± 0.054	5.277AspLeu: 5.277 ± 0.064	1.191AspMet: 1.191 ± 0.033	1.523AspAsn: 1.523 ± 0.037	1.972AspPro: 1.972 ± 0.043	2.423AspGln: 2.423 ± 0.048	2.174AspArg: 2.174 ± 0.052	2.755AspSer: 2.755 ± 0.045	2.446AspThr: 2.446 ± 0.044	3.771AspVal: 3.771 ± 0.055	0.634AspTrp: 0.634 ± 0.023	2.162AspTyr: 2.162 ± 0.043	0.0AspXaa: 0.0 ± 0.0
Glu	5.103GluAla: 5.103 ± 0.067	0.39GluCys: 0.39 ± 0.02	3.933GluAsp: 3.933 ± 0.059	7.456GluGlu: 7.456 ± 0.105	2.752GluPhe: 2.752 ± 0.047	4.406GluGly: 4.406 ± 0.067	1.53GluHis: 1.53 ± 0.039	5.855GluIle: 5.855 ± 0.076	6.106GluLys: 6.106 ± 0.073	7.949GluLeu: 7.949 ± 0.1	2.279GluMet: 2.279 ± 0.046	3.64GluAsn: 3.64 ± 0.063	1.935GluPro: 1.935 ± 0.04	3.448GluGln: 3.448 ± 0.062	3.314GluArg: 3.314 ± 0.061	3.705GluSer: 3.705 ± 0.066	3.864GluThr: 3.864 ± 0.067	5.662GluVal: 5.662 ± 0.074	0.797GluTrp: 0.797 ± 0.024	2.4GluTyr: 2.4 ± 0.047	0.0GluXaa: 0.0 ± 0.0
Phe	2.719PheAla: 2.719 ± 0.047	0.348PheCys: 0.348 ± 0.018	2.283PheAsp: 2.283 ± 0.045	2.948PheGlu: 2.948 ± 0.05	2.458PhePhe: 2.458 ± 0.058	3.211PheGly: 3.211 ± 0.06	1.046PheHis: 1.046 ± 0.03	4.255PheIle: 4.255 ± 0.076	2.5PheLys: 2.5 ± 0.042	4.824PheLeu: 4.824 ± 0.076	1.185PheMet: 1.185 ± 0.03	2.02PheAsn: 2.02 ± 0.043	1.73PhePro: 1.73 ± 0.041	1.693PheGln: 1.693 ± 0.037	1.458PheArg: 1.458 ± 0.038	3.474PheSer: 3.474 ± 0.059	2.769PheThr: 2.769 ± 0.057	3.096PheVal: 3.096 ± 0.054	0.467PheTrp: 0.467 ± 0.019	1.82PheTyr: 1.82 ± 0.043	0.0PheXaa: 0.0 ± 0.0
Gly	4.46GlyAla: 4.46 ± 0.071	0.592GlyCys: 0.592 ± 0.024	3.132GlyAsp: 3.132 ± 0.053	4.501GlyGlu: 4.501 ± 0.065	3.45GlyPhe: 3.45 ± 0.058	4.673GlyGly: 4.673 ± 0.078	1.443GlyHis: 1.443 ± 0.033	5.938GlyIle: 5.938 ± 0.076	4.709GlyLys: 4.709 ± 0.074	6.578GlyLeu: 6.578 ± 0.092	2.024GlyMet: 2.024 ± 0.042	2.808GlyAsn: 2.808 ± 0.051	1.75GlyPro: 1.75 ± 0.041	2.169GlyGln: 2.169 ± 0.045	2.526GlyArg: 2.526 ± 0.057	4.01GlySer: 4.01 ± 0.062	4.099GlyThr: 4.099 ± 0.064	5.134GlyVal: 5.134 ± 0.074	0.736GlyTrp: 0.736 ± 0.027	2.824GlyTyr: 2.824 ± 0.058	0.0GlyXaa: 0.0 ± 0.0
His	1.229HisAla: 1.229 ± 0.028	0.181HisCys: 0.181 ± 0.013	1.057HisAsp: 1.057 ± 0.03	1.504HisGlu: 1.504 ± 0.034	1.102HisPhe: 1.102 ± 0.037	1.386HisGly: 1.386 ± 0.04	0.722HisHis: 0.722 ± 0.033	1.68HisIle: 1.68 ± 0.033	1.056HisLys: 1.056 ± 0.031	2.131HisLeu: 2.131 ± 0.04	0.515HisMet: 0.515 ± 0.021	0.841HisAsn: 0.841 ± 0.027	1.114HisPro: 1.114 ± 0.037	0.925HisGln: 0.925 ± 0.028	0.825HisArg: 0.825 ± 0.028	1.426HisSer: 1.426 ± 0.036	1.087HisThr: 1.087 ± 0.033	1.421HisVal: 1.421 ± 0.037	0.214HisTrp: 0.214 ± 0.013	0.909HisTyr: 0.909 ± 0.025	0.0HisXaa: 0.0 ± 0.0
Ile	5.611IleAla: 5.611 ± 0.083	0.618IleCys: 0.618 ± 0.024	4.334IleAsp: 4.334 ± 0.065	6.067IleGlu: 6.067 ± 0.077	3.404IlePhe: 3.404 ± 0.067	6.213IleGly: 6.213 ± 0.091	1.737IleHis: 1.737 ± 0.042	6.433IleIle: 6.433 ± 0.095	5.05IleLys: 5.05 ± 0.074	7.617IleLeu: 7.617 ± 0.108	1.794IleMet: 1.794 ± 0.043	3.699IleAsn: 3.699 ± 0.066	3.409IlePro: 3.409 ± 0.06	3.214IleGln: 3.214 ± 0.053	3.024IleArg: 3.024 ± 0.053	5.524IleSer: 5.524 ± 0.085	4.64IleThr: 4.64 ± 0.071	5.747IleVal: 5.747 ± 0.068	0.671IleTrp: 0.671 ± 0.025	2.572IleTyr: 2.572 ± 0.049	0.0IleXaa: 0.0 ± 0.0
Lys	4.164LysAla: 4.164 ± 0.062	0.307LysCys: 0.307 ± 0.017	3.673LysAsp: 3.673 ± 0.064	6.841LysGlu: 6.841 ± 0.076	1.836LysPhe: 1.836 ± 0.043	4.473LysGly: 4.473 ± 0.062	1.363LysHis: 1.363 ± 0.035	4.557LysIle: 4.557 ± 0.066	5.475LysLys: 5.475 ± 0.083	6.031LysLeu: 6.031 ± 0.073	2.038LysMet: 2.038 ± 0.036	3.253LysAsn: 3.253 ± 0.056	2.159LysPro: 2.159 ± 0.04	3.038LysGln: 3.038 ± 0.057	3.159LysArg: 3.159 ± 0.053	3.538LysSer: 3.538 ± 0.051	3.445LysThr: 3.445 ± 0.054	4.975LysVal: 4.975 ± 0.069	0.807LysTrp: 0.807 ± 0.028	2.076LysTyr: 2.076 ± 0.047	0.0LysXaa: 0.0 ± 0.0
Leu	7.001LeuAla: 7.001 ± 0.087	0.666LeuCys: 0.666 ± 0.027	4.876LeuAsp: 4.876 ± 0.056	7.004LeuGlu: 7.004 ± 0.093	5.091LeuPhe: 5.091 ± 0.073	6.487LeuGly: 6.487 ± 0.086	2.095LeuHis: 2.095 ± 0.045	7.522LeuIle: 7.522 ± 0.103	6.551LeuLys: 6.551 ± 0.079	10.976LeuLeu: 10.976 ± 0.136	2.363LeuMet: 2.363 ± 0.042	4.26LeuAsn: 4.26 ± 0.07	3.935LeuPro: 3.935 ± 0.055	3.966LeuGln: 3.966 ± 0.071	3.648LeuArg: 3.648 ± 0.062	7.184LeuSer: 7.184 ± 0.082	5.875LeuThr: 5.875 ± 0.074	6.825LeuVal: 6.825 ± 0.088	0.818LeuTrp: 0.818 ± 0.029	3.403LeuTyr: 3.403 ± 0.059	0.0LeuXaa: 0.0 ± 0.0
Met	1.75MetAla: 1.75 ± 0.043	0.132MetCys: 0.132 ± 0.011	1.349MetAsp: 1.349 ± 0.033	1.968MetGlu: 1.968 ± 0.041	1.104MetPhe: 1.104 ± 0.036	1.67MetGly: 1.67 ± 0.037	0.358MetHis: 0.358 ± 0.017	2.213MetIle: 2.213 ± 0.043	2.282MetLys: 2.282 ± 0.043	2.451MetLeu: 2.451 ± 0.049	0.818MetMet: 0.818 ± 0.032	1.623MetAsn: 1.623 ± 0.036	0.881MetPro: 0.881 ± 0.026	0.766MetGln: 0.766 ± 0.027	0.983MetArg: 0.983 ± 0.028	1.719MetSer: 1.719 ± 0.045	1.602MetThr: 1.602 ± 0.034	1.886MetVal: 1.886 ± 0.044	0.187MetTrp: 0.187 ± 0.013	0.744MetTyr: 0.744 ± 0.026	0.0MetXaa: 0.0 ± 0.0
Asn	2.494AsnAla: 2.494 ± 0.051	0.284AsnCys: 0.284 ± 0.017	2.191AsnAsp: 2.191 ± 0.043	3.688AsnGlu: 3.688 ± 0.055	1.707AsnPhe: 1.707 ± 0.041	3.237AsnGly: 3.237 ± 0.058	1.172AsnHis: 1.172 ± 0.032	3.493AsnIle: 3.493 ± 0.064	2.987AsnLys: 2.987 ± 0.063	3.96AsnLeu: 3.96 ± 0.056	1.206AsnMet: 1.206 ± 0.034	2.022AsnAsn: 2.022 ± 0.047	2.221AsnPro: 2.221 ± 0.048	2.202AsnGln: 2.202 ± 0.047	2.081AsnArg: 2.081 ± 0.047	2.449AsnSer: 2.449 ± 0.054	2.188AsnThr: 2.188 ± 0.049	3.089AsnVal: 3.089 ± 0.051	0.524AsnTrp: 0.524 ± 0.023	1.604AsnTyr: 1.604 ± 0.037	0.0AsnXaa: 0.0 ± 0.0
Pro	1.975ProAla: 1.975 ± 0.043	0.202ProCys: 0.202 ± 0.013	1.905ProAsp: 1.905 ± 0.039	2.824ProGlu: 2.824 ± 0.057	2.112ProPhe: 2.112 ± 0.042	2.22ProGly: 2.22 ± 0.05	0.775ProHis: 0.775 ± 0.026	3.044ProIle: 3.044 ± 0.056	2.126ProLys: 2.126 ± 0.046	3.551ProLeu: 3.551 ± 0.057	0.764ProMet: 0.764 ± 0.024	1.737ProAsn: 1.737 ± 0.039	0.964ProPro: 0.964 ± 0.035	1.043ProGln: 1.043 ± 0.032	1.082ProArg: 1.082 ± 0.029	2.419ProSer: 2.419 ± 0.052	2.259ProThr: 2.259 ± 0.038	2.755ProVal: 2.755 ± 0.046	0.339ProTrp: 0.339 ± 0.021	1.479ProTyr: 1.479 ± 0.042	0.0ProXaa: 0.0 ± 0.0
Gln	2.517GlnAla: 2.517 ± 0.048	0.205GlnCys: 0.205 ± 0.014	1.858GlnAsp: 1.858 ± 0.041	3.142GlnGlu: 3.142 ± 0.049	1.725GlnPhe: 1.725 ± 0.039	2.214GlnGly: 2.214 ± 0.049	0.875GlnHis: 0.875 ± 0.029	2.679GlnIle: 2.679 ± 0.041	2.643GlnLys: 2.643 ± 0.054	4.241GlnLeu: 4.241 ± 0.072	1.047GlnMet: 1.047 ± 0.033	1.73GlnAsn: 1.73 ± 0.038	1.292GlnPro: 1.292 ± 0.034	1.954GlnGln: 1.954 ± 0.056	1.449GlnArg: 1.449 ± 0.036	2.287GlnSer: 2.287 ± 0.044	2.003GlnThr: 2.003 ± 0.044	2.524GlnVal: 2.524 ± 0.051	0.382GlnTrp: 0.382 ± 0.019	1.476GlnTyr: 1.476 ± 0.036	0.0GlnXaa: 0.0 ± 0.0
Arg	2.254ArgAla: 2.254 ± 0.046	0.247ArgCys: 0.247 ± 0.015	2.072ArgAsp: 2.072 ± 0.043	3.217ArgGlu: 3.217 ± 0.057	1.902ArgPhe: 1.902 ± 0.037	2.327ArgGly: 2.327 ± 0.048	0.689ArgHis: 0.689 ± 0.027	3.046ArgIle: 3.046 ± 0.053	3.003ArgLys: 3.003 ± 0.048	3.871ArgLeu: 3.871 ± 0.071	1.204ArgMet: 1.204 ± 0.035	1.874ArgAsn: 1.874 ± 0.035	1.254ArgPro: 1.254 ± 0.034	1.314ArgGln: 1.314 ± 0.04	1.734ArgArg: 1.734 ± 0.041	2.14ArgSer: 2.14 ± 0.044	1.923ArgThr: 1.923 ± 0.041	2.647ArgVal: 2.647 ± 0.05	0.399ArgTrp: 0.399 ± 0.02	1.535ArgTyr: 1.535 ± 0.038	0.0ArgXaa: 0.0 ± 0.0
Ser	3.464SerAla: 3.464 ± 0.056	0.392SerCys: 0.392 ± 0.02	2.74SerAsp: 2.74 ± 0.049	4.071SerGlu: 4.071 ± 0.06	3.541SerPhe: 3.541 ± 0.065	4.144SerGly: 4.144 ± 0.064	1.254SerHis: 1.254 ± 0.035	5.806SerIle: 5.806 ± 0.074	4.053SerLys: 4.053 ± 0.062	6.735SerLeu: 6.735 ± 0.085	1.733SerMet: 1.733 ± 0.041	2.72SerAsn: 2.72 ± 0.054	2.325SerPro: 2.325 ± 0.046	2.05SerGln: 2.05 ± 0.044	2.209SerArg: 2.209 ± 0.047	4.438SerSer: 4.438 ± 0.069	3.509SerThr: 3.509 ± 0.062	4.337SerVal: 4.337 ± 0.061	0.654SerTrp: 0.654 ± 0.025	2.456SerTyr: 2.456 ± 0.048	0.0SerXaa: 0.0 ± 0.0
Thr	3.522ThrAla: 3.522 ± 0.056	0.35ThrCys: 0.35 ± 0.017	2.627ThrAsp: 2.627 ± 0.046	3.774ThrGlu: 3.774 ± 0.067	2.813ThrPhe: 2.813 ± 0.055	4.07ThrGly: 4.07 ± 0.064	1.134ThrHis: 1.134 ± 0.031	5.003ThrIle: 5.003 ± 0.075	3.523ThrLys: 3.523 ± 0.055	5.515ThrLeu: 5.515 ± 0.068	1.308ThrMet: 1.308 ± 0.032	2.69ThrAsn: 2.69 ± 0.051	2.178ThrPro: 2.178 ± 0.042	1.547ThrGln: 1.547 ± 0.038	1.805ThrArg: 1.805 ± 0.043	3.571ThrSer: 3.571 ± 0.061	3.165ThrThr: 3.165 ± 0.061	4.122ThrVal: 4.122 ± 0.057	0.548ThrTrp: 0.548 ± 0.022	2.039ThrTyr: 2.039 ± 0.047	0.0ThrXaa: 0.0 ± 0.0
Val	4.721ValAla: 4.721 ± 0.077	0.53ValCys: 0.53 ± 0.021	3.728ValAsp: 3.728 ± 0.059	5.23ValGlu: 5.23 ± 0.075	3.17ValPhe: 3.17 ± 0.06	4.982ValGly: 4.982 ± 0.074	1.389ValHis: 1.389 ± 0.036	6.043ValIle: 6.043 ± 0.073	4.739ValLys: 4.739 ± 0.075	6.911ValLeu: 6.911 ± 0.076	1.853ValMet: 1.853 ± 0.039	3.306ValAsn: 3.306 ± 0.059	2.588ValPro: 2.588 ± 0.049	2.382ValGln: 2.382 ± 0.041	2.634ValArg: 2.634 ± 0.042	4.714ValSer: 4.714 ± 0.071	4.339ValThr: 4.339 ± 0.062	5.372ValVal: 5.372 ± 0.083	0.628ValTrp: 0.628 ± 0.024	2.333ValTyr: 2.333 ± 0.044	0.0ValXaa: 0.0 ± 0.0
Trp	0.516TrpAla: 0.516 ± 0.02	0.069TrpCys: 0.069 ± 0.007	0.524TrpAsp: 0.524 ± 0.023	0.685TrpGlu: 0.685 ± 0.029	0.523TrpPhe: 0.523 ± 0.021	0.686TrpGly: 0.686 ± 0.024	0.206TrpHis: 0.206 ± 0.013	0.851TrpIle: 0.851 ± 0.033	0.711TrpLys: 0.711 ± 0.027	1.046TrpLeu: 1.046 ± 0.03	0.333TrpMet: 0.333 ± 0.016	0.549TrpAsn: 0.549 ± 0.022	0.257TrpPro: 0.257 ± 0.018	0.328TrpGln: 0.328 ± 0.017	0.357TrpArg: 0.357 ± 0.017	0.654TrpSer: 0.654 ± 0.027	0.474TrpThr: 0.474 ± 0.021	0.694TrpVal: 0.694 ± 0.024	0.154TrpTrp: 0.154 ± 0.011	0.358TrpTyr: 0.358 ± 0.018	0.0TrpXaa: 0.0 ± 0.0
Tyr	1.891TyrAla: 1.891 ± 0.04	0.313TyrCys: 0.313 ± 0.019	1.868TyrAsp: 1.868 ± 0.04	2.614TyrGlu: 2.614 ± 0.047	1.927TyrPhe: 1.927 ± 0.048	2.499TyrGly: 2.499 ± 0.047	0.893TyrHis: 0.893 ± 0.032	2.703TyrIle: 2.703 ± 0.051	2.309TyrLys: 2.309 ± 0.047	3.676TyrLeu: 3.676 ± 0.057	0.876TyrMet: 0.876 ± 0.025	1.573TyrAsn: 1.573 ± 0.042	1.414TyrPro: 1.414 ± 0.033	1.604TyrGln: 1.604 ± 0.038	1.549TyrArg: 1.549 ± 0.037	2.348TyrSer: 2.348 ± 0.047	1.849TyrThr: 1.849 ± 0.045	2.288TyrVal: 2.288 ± 0.048	0.383TyrTrp: 0.383 ± 0.019	1.497TyrTyr: 1.497 ± 0.042	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 4152 proteins (1182166 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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