Amino acid dipepetide frequency for Brassica rapa subsp. pekinensis (Chinese cabbage) (Brassica pekinensis)

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	6.246AlaAla: 6.246 ± 0.029	1.163AlaCys: 1.163 ± 0.01	2.976AlaAsp: 2.976 ± 0.014	4.253AlaGlu: 4.253 ± 0.021	2.681AlaPhe: 2.681 ± 0.014	3.978AlaGly: 3.978 ± 0.018	1.209AlaHis: 1.209 ± 0.009	3.376AlaIle: 3.376 ± 0.017	3.996AlaLys: 3.996 ± 0.017	6.256AlaLeu: 6.256 ± 0.024	1.802AlaMet: 1.802 ± 0.011	2.436AlaAsn: 2.436 ± 0.013	2.801AlaPro: 2.801 ± 0.018	1.95AlaGln: 1.95 ± 0.011	3.385AlaArg: 3.385 ± 0.016	6.07AlaSer: 6.07 ± 0.023	3.722AlaThr: 3.722 ± 0.015	4.929AlaVal: 4.929 ± 0.022	0.72AlaTrp: 0.72 ± 0.008	1.754AlaTyr: 1.754 ± 0.011	0.0AlaXaa: 0.0 ± 0.0
Cys	0.884CysAla: 0.884 ± 0.008	0.509CysCys: 0.509 ± 0.007	0.904CysAsp: 0.904 ± 0.01	0.894CysGlu: 0.894 ± 0.008	0.925CysPhe: 0.925 ± 0.01	1.407CysGly: 1.407 ± 0.011	0.421CysHis: 0.421 ± 0.005	0.895CysIle: 0.895 ± 0.008	1.074CysLys: 1.074 ± 0.009	1.858CysLeu: 1.858 ± 0.011	0.397CysMet: 0.397 ± 0.005	0.762CysAsn: 0.762 ± 0.008	0.883CysPro: 0.883 ± 0.008	0.516CysGln: 0.516 ± 0.006	1.039CysArg: 1.039 ± 0.009	1.725CysSer: 1.725 ± 0.013	0.821CysThr: 0.821 ± 0.007	1.21CysVal: 1.21 ± 0.01	0.219CysTrp: 0.219 ± 0.004	0.559CysTyr: 0.559 ± 0.006	0.0CysXaa: 0.0 ± 0.0
Asp	3.344AspAla: 3.344 ± 0.016	0.911AspCys: 0.911 ± 0.008	3.922AspAsp: 3.922 ± 0.023	4.295AspGlu: 4.295 ± 0.019	2.294AspPhe: 2.294 ± 0.014	3.797AspGly: 3.797 ± 0.018	1.323AspHis: 1.323 ± 0.009	2.8AspIle: 2.8 ± 0.014	2.873AspLys: 2.873 ± 0.015	5.141AspLeu: 5.141 ± 0.02	1.368AspMet: 1.368 ± 0.009	2.045AspAsn: 2.045 ± 0.012	2.691AspPro: 2.691 ± 0.015	1.812AspGln: 1.812 ± 0.012	2.364AspArg: 2.364 ± 0.013	4.299AspSer: 4.299 ± 0.018	2.301AspThr: 2.301 ± 0.013	3.917AspVal: 3.917 ± 0.016	0.69AspTrp: 0.69 ± 0.007	1.582AspTyr: 1.582 ± 0.011	0.0AspXaa: 0.0 ± 0.0
Glu	5.059GluAla: 5.059 ± 0.023	0.886GluCys: 0.886 ± 0.009	4.263GluAsp: 4.263 ± 0.02	7.4GluGlu: 7.4 ± 0.042	2.413GluPhe: 2.413 ± 0.013	3.649GluGly: 3.649 ± 0.018	1.226GluHis: 1.226 ± 0.01	3.777GluIle: 3.777 ± 0.018	5.099GluLys: 5.099 ± 0.024	5.769GluLeu: 5.769 ± 0.028	1.874GluMet: 1.874 ± 0.013	2.946GluAsn: 2.946 ± 0.016	2.278GluPro: 2.278 ± 0.014	2.057GluGln: 2.057 ± 0.013	3.609GluArg: 3.609 ± 0.02	4.902GluSer: 4.902 ± 0.02	3.776GluThr: 3.776 ± 0.017	4.262GluVal: 4.262 ± 0.016	0.745GluTrp: 0.745 ± 0.007	1.656GluTyr: 1.656 ± 0.011	0.0GluXaa: 0.0 ± 0.0
Phe	2.486PheAla: 2.486 ± 0.012	0.851PheCys: 0.851 ± 0.008	2.366PheAsp: 2.366 ± 0.014	2.309PheGlu: 2.309 ± 0.013	1.971PhePhe: 1.971 ± 0.014	3.055PheGly: 3.055 ± 0.017	1.079PheHis: 1.079 ± 0.008	1.987PheIle: 1.987 ± 0.012	2.21PheLys: 2.21 ± 0.012	4.244PheLeu: 4.244 ± 0.019	1.021PheMet: 1.021 ± 0.009	1.683PheAsn: 1.683 ± 0.011	2.036PhePro: 2.036 ± 0.012	1.429PheGln: 1.429 ± 0.01	2.074PheArg: 2.074 ± 0.013	4.04PheSer: 4.04 ± 0.018	2.202PheThr: 2.202 ± 0.013	2.852PheVal: 2.852 ± 0.013	0.552PheTrp: 0.552 ± 0.006	1.254PheTyr: 1.254 ± 0.008	0.0PheXaa: 0.0 ± 0.0
Gly	3.726GlyAla: 3.726 ± 0.017	1.261GlyCys: 1.261 ± 0.01	3.634GlyAsp: 3.634 ± 0.017	4.035GlyGlu: 4.035 ± 0.016	3.259GlyPhe: 3.259 ± 0.016	6.131GlyGly: 6.131 ± 0.05	1.45GlyHis: 1.45 ± 0.01	3.23GlyIle: 3.23 ± 0.016	4.134GlyLys: 4.134 ± 0.018	5.768GlyLeu: 5.768 ± 0.021	1.478GlyMet: 1.478 ± 0.009	2.956GlyAsn: 2.956 ± 0.015	2.326GlyPro: 2.326 ± 0.013	1.962GlyGln: 1.962 ± 0.012	3.643GlyArg: 3.643 ± 0.019	6.008GlySer: 6.008 ± 0.026	3.24GlyThr: 3.24 ± 0.018	4.389GlyVal: 4.389 ± 0.021	0.858GlyTrp: 0.858 ± 0.008	2.116GlyTyr: 2.116 ± 0.014	0.0GlyXaa: 0.0 ± 0.0
His	1.237HisAla: 1.237 ± 0.01	0.47HisCys: 0.47 ± 0.006	1.123HisAsp: 1.123 ± 0.009	1.297HisGlu: 1.297 ± 0.01	0.95HisPhe: 0.95 ± 0.007	1.667HisGly: 1.667 ± 0.012	1.026HisHis: 1.026 ± 0.012	1.118HisIle: 1.118 ± 0.01	1.195HisLys: 1.195 ± 0.009	2.261HisLeu: 2.261 ± 0.014	0.576HisMet: 0.576 ± 0.006	0.936HisAsn: 0.936 ± 0.007	1.308HisPro: 1.308 ± 0.01	1.041HisGln: 1.041 ± 0.011	1.417HisArg: 1.417 ± 0.01	1.808HisSer: 1.808 ± 0.013	0.957HisThr: 0.957 ± 0.008	1.593HisVal: 1.593 ± 0.012	0.285HisTrp: 0.285 ± 0.005	0.692HisTyr: 0.692 ± 0.007	0.0HisXaa: 0.0 ± 0.0
Ile	3.34IleAla: 3.34 ± 0.016	1.025IleCys: 1.025 ± 0.009	2.833IleAsp: 2.833 ± 0.012	3.003IleGlu: 3.003 ± 0.015	2.103IlePhe: 2.103 ± 0.013	3.233IleGly: 3.233 ± 0.015	1.225IleHis: 1.225 ± 0.01	2.523IleIle: 2.523 ± 0.013	2.845IleLys: 2.845 ± 0.014	4.7IleLeu: 4.7 ± 0.019	1.112IleMet: 1.112 ± 0.007	2.071IleAsn: 2.071 ± 0.011	2.705IlePro: 2.705 ± 0.015	1.813IleGln: 1.813 ± 0.011	2.594IleArg: 2.594 ± 0.013	4.566IleSer: 4.566 ± 0.02	2.674IleThr: 2.674 ± 0.014	3.39IleVal: 3.39 ± 0.015	0.643IleTrp: 0.643 ± 0.007	1.422IleTyr: 1.422 ± 0.009	0.0IleXaa: 0.0 ± 0.0
Lys	4.145LysAla: 4.145 ± 0.019	0.925LysCys: 0.925 ± 0.008	3.257LysAsp: 3.257 ± 0.017	4.887LysGlu: 4.887 ± 0.026	2.043LysPhe: 2.043 ± 0.011	3.565LysGly: 3.565 ± 0.017	1.336LysHis: 1.336 ± 0.01	3.2LysIle: 3.2 ± 0.015	5.364LysLys: 5.364 ± 0.027	6.021LysLeu: 6.021 ± 0.026	1.559LysMet: 1.559 ± 0.01	2.602LysAsn: 2.602 ± 0.012	3.036LysPro: 3.036 ± 0.017	2.248LysGln: 2.248 ± 0.012	3.935LysArg: 3.935 ± 0.018	4.751LysSer: 4.751 ± 0.022	3.383LysThr: 3.383 ± 0.014	3.839LysVal: 3.839 ± 0.016	0.796LysTrp: 0.796 ± 0.008	1.543LysTyr: 1.543 ± 0.011	0.0LysXaa: 0.0 ± 0.0
Leu	6.254LeuAla: 6.254 ± 0.025	1.81LeuCys: 1.81 ± 0.013	4.955LeuAsp: 4.955 ± 0.02	6.168LeuGlu: 6.168 ± 0.026	3.802LeuPhe: 3.802 ± 0.016	5.619LeuGly: 5.619 ± 0.021	2.367LeuHis: 2.367 ± 0.012	4.362LeuIle: 4.362 ± 0.02	6.024LeuLys: 6.024 ± 0.028	9.495LeuLeu: 9.495 ± 0.035	2.231LeuMet: 2.231 ± 0.012	3.699LeuAsn: 3.699 ± 0.016	4.984LeuPro: 4.984 ± 0.02	3.771LeuGln: 3.771 ± 0.016	5.49LeuArg: 5.49 ± 0.02	8.51LeuSer: 8.51 ± 0.036	4.701LeuThr: 4.701 ± 0.018	6.529LeuVal: 6.529 ± 0.023	1.133LeuTrp: 1.133 ± 0.011	2.421LeuTyr: 2.421 ± 0.014	0.0LeuXaa: 0.0 ± 0.0
Met	2.066MetAla: 2.066 ± 0.013	0.343MetCys: 0.343 ± 0.005	1.431MetAsp: 1.431 ± 0.01	2.042MetGlu: 2.042 ± 0.011	0.945MetPhe: 0.945 ± 0.008	1.585MetGly: 1.585 ± 0.011	0.476MetHis: 0.476 ± 0.006	1.285MetIle: 1.285 ± 0.009	1.713MetLys: 1.713 ± 0.011	2.077MetLeu: 2.077 ± 0.011	0.81MetMet: 0.81 ± 0.008	1.07MetAsn: 1.07 ± 0.007	0.957MetPro: 0.957 ± 0.009	0.81MetGln: 0.81 ± 0.007	1.29MetArg: 1.29 ± 0.01	2.007MetSer: 2.007 ± 0.012	1.128MetThr: 1.128 ± 0.009	1.776MetVal: 1.776 ± 0.011	0.273MetTrp: 0.273 ± 0.005	0.622MetTyr: 0.622 ± 0.006	0.0MetXaa: 0.0 ± 0.0
Asn	2.581AsnAla: 2.581 ± 0.012	0.732AsnCys: 0.732 ± 0.007	1.997AsnAsp: 1.997 ± 0.011	2.396AsnGlu: 2.396 ± 0.014	1.641AsnPhe: 1.641 ± 0.011	3.192AsnGly: 3.192 ± 0.016	1.125AsnHis: 1.125 ± 0.009	2.249AsnIle: 2.249 ± 0.013	2.442AsnLys: 2.442 ± 0.014	4.217AsnLeu: 4.217 ± 0.023	1.088AsnMet: 1.088 ± 0.008	2.418AsnAsn: 2.418 ± 0.02	2.337AsnPro: 2.337 ± 0.014	1.677AsnGln: 1.677 ± 0.011	2.122AsnArg: 2.122 ± 0.012	3.455AsnSer: 3.455 ± 0.017	2.067AsnThr: 2.067 ± 0.013	2.87AsnVal: 2.87 ± 0.015	0.525AsnTrp: 0.525 ± 0.006	1.188AsnTyr: 1.188 ± 0.009	0.0AsnXaa: 0.0 ± 0.0
Pro	2.937ProAla: 2.937 ± 0.016	0.76ProCys: 0.76 ± 0.008	2.452ProAsp: 2.452 ± 0.012	3.399ProGlu: 3.399 ± 0.015	1.947ProPhe: 1.947 ± 0.012	2.735ProGly: 2.735 ± 0.019	1.078ProHis: 1.078 ± 0.009	2.104ProIle: 2.104 ± 0.012	2.801ProLys: 2.801 ± 0.017	4.254ProLeu: 4.254 ± 0.018	1.015ProMet: 1.015 ± 0.009	2.146ProAsn: 2.146 ± 0.014	4.433ProPro: 4.433 ± 0.059	1.802ProGln: 1.802 ± 0.012	2.607ProArg: 2.607 ± 0.016	5.213ProSer: 5.213 ± 0.026	2.656ProThr: 2.656 ± 0.019	3.339ProVal: 3.339 ± 0.018	0.608ProTrp: 0.608 ± 0.006	1.352ProTyr: 1.352 ± 0.014	0.0ProXaa: 0.0 ± 0.0
Gln	2.272GlnAla: 2.272 ± 0.015	0.535GlnCys: 0.535 ± 0.006	1.652GlnAsp: 1.652 ± 0.011	2.515GlnGlu: 2.515 ± 0.016	1.251GlnPhe: 1.251 ± 0.009	2.069GlnGly: 2.069 ± 0.012	0.839GlnHis: 0.839 ± 0.009	1.803GlnIle: 1.803 ± 0.01	2.116GlnLys: 2.116 ± 0.013	3.121GlnLeu: 3.121 ± 0.015	0.922GlnMet: 0.922 ± 0.008	1.563GlnAsn: 1.563 ± 0.01	1.729GlnPro: 1.729 ± 0.013	1.988GlnGln: 1.988 ± 0.024	2.177GlnArg: 2.177 ± 0.012	2.711GlnSer: 2.711 ± 0.015	1.887GlnThr: 1.887 ± 0.011	2.259GlnVal: 2.259 ± 0.012	0.439GlnTrp: 0.439 ± 0.005	0.867GlnTyr: 0.867 ± 0.008	0.0GlnXaa: 0.0 ± 0.0
Arg	3.193ArgAla: 3.193 ± 0.014	1.04ArgCys: 1.04 ± 0.009	2.846ArgAsp: 2.846 ± 0.014	3.568ArgGlu: 3.568 ± 0.016	2.507ArgPhe: 2.507 ± 0.012	3.438ArgGly: 3.438 ± 0.015	1.254ArgHis: 1.254 ± 0.01	2.791ArgIle: 2.791 ± 0.014	3.825ArgLys: 3.825 ± 0.019	5.143ArgLeu: 5.143 ± 0.018	1.32ArgMet: 1.32 ± 0.01	2.407ArgAsn: 2.407 ± 0.014	2.385ArgPro: 2.385 ± 0.013	1.844ArgGln: 1.844 ± 0.011	4.352ArgArg: 4.352 ± 0.023	4.778ArgSer: 4.778 ± 0.022	2.577ArgThr: 2.577 ± 0.011	3.638ArgVal: 3.638 ± 0.016	0.743ArgTrp: 0.743 ± 0.007	1.504ArgTyr: 1.504 ± 0.011	0.0ArgXaa: 0.0 ± 0.0
Ser	5.163SerAla: 5.163 ± 0.021	1.686SerCys: 1.686 ± 0.012	4.628SerAsp: 4.628 ± 0.019	4.973SerGlu: 4.973 ± 0.022	4.099SerPhe: 4.099 ± 0.017	6.082SerGly: 6.082 ± 0.026	2.028SerHis: 2.028 ± 0.013	4.088SerIle: 4.088 ± 0.02	4.97SerLys: 4.97 ± 0.019	8.962SerLeu: 8.962 ± 0.031	2.046SerMet: 2.046 ± 0.012	3.79SerAsn: 3.79 ± 0.018	5.005SerPro: 5.005 ± 0.035	2.943SerGln: 2.943 ± 0.015	4.694SerArg: 4.694 ± 0.019	11.971SerSer: 11.971 ± 0.047	4.572SerThr: 4.572 ± 0.018	5.686SerVal: 5.686 ± 0.021	1.139SerTrp: 1.139 ± 0.01	2.425SerTyr: 2.425 ± 0.014	0.0SerXaa: 0.0 ± 0.0
Thr	3.475ThrAla: 3.475 ± 0.015	0.988ThrCys: 0.988 ± 0.008	2.42ThrAsp: 2.42 ± 0.013	3.167ThrGlu: 3.167 ± 0.014	2.097ThrPhe: 2.097 ± 0.013	3.498ThrGly: 3.498 ± 0.018	1.076ThrHis: 1.076 ± 0.009	2.663ThrIle: 2.663 ± 0.014	2.995ThrLys: 2.995 ± 0.015	4.751ThrLeu: 4.751 ± 0.018	1.247ThrMet: 1.247 ± 0.01	2.169ThrAsn: 2.169 ± 0.013	2.768ThrPro: 2.768 ± 0.016	1.619ThrGln: 1.619 ± 0.009	2.704ThrArg: 2.704 ± 0.014	4.845ThrSer: 4.845 ± 0.021	3.415ThrThr: 3.415 ± 0.02	3.759ThrVal: 3.759 ± 0.015	0.687ThrTrp: 0.687 ± 0.007	1.402ThrTyr: 1.402 ± 0.011	0.0ThrXaa: 0.0 ± 0.0
Val	4.892ValAla: 4.892 ± 0.02	1.194ValCys: 1.194 ± 0.008	3.854ValAsp: 3.854 ± 0.017	4.655ValGlu: 4.655 ± 0.02	2.916ValPhe: 2.916 ± 0.015	4.023ValGly: 4.023 ± 0.019	1.467ValHis: 1.467 ± 0.01	3.442ValIle: 3.442 ± 0.017	4.28ValLys: 4.28 ± 0.017	6.411ValLeu: 6.411 ± 0.022	1.746ValMet: 1.746 ± 0.011	2.687ValAsn: 2.687 ± 0.012	3.268ValPro: 3.268 ± 0.016	2.139ValGln: 2.139 ± 0.013	3.293ValArg: 3.293 ± 0.014	6.027ValSer: 6.027 ± 0.023	3.678ValThr: 3.678 ± 0.015	5.328ValVal: 5.328 ± 0.022	0.817ValTrp: 0.817 ± 0.008	2.076ValTyr: 2.076 ± 0.012	0.0ValXaa: 0.0 ± 0.0
Trp	0.688TrpAla: 0.688 ± 0.007	0.235TrpCys: 0.235 ± 0.004	0.694TrpAsp: 0.694 ± 0.007	0.778TrpGlu: 0.778 ± 0.007	0.577TrpPhe: 0.577 ± 0.007	0.718TrpGly: 0.718 ± 0.009	0.246TrpHis: 0.246 ± 0.004	0.709TrpIle: 0.709 ± 0.007	0.888TrpLys: 0.888 ± 0.008	1.193TrpLeu: 1.193 ± 0.011	0.328TrpMet: 0.328 ± 0.005	0.663TrpAsn: 0.663 ± 0.007	0.463TrpPro: 0.463 ± 0.007	0.383TrpGln: 0.383 ± 0.005	0.904TrpArg: 0.904 ± 0.007	1.028TrpSer: 1.028 ± 0.008	0.643TrpThr: 0.643 ± 0.007	0.786TrpVal: 0.786 ± 0.008	0.238TrpTrp: 0.238 ± 0.004	0.346TrpTyr: 0.346 ± 0.005	0.0TrpXaa: 0.0 ± 0.0
Tyr	1.718TyrAla: 1.718 ± 0.011	0.579TyrCys: 0.579 ± 0.006	1.563TyrAsp: 1.563 ± 0.01	1.615TyrGlu: 1.615 ± 0.01	1.282TyrPhe: 1.282 ± 0.01	2.164TyrGly: 2.164 ± 0.015	0.703TyrHis: 0.703 ± 0.007	1.414TyrIle: 1.414 ± 0.01	1.592TyrLys: 1.592 ± 0.011	2.68TyrLeu: 2.68 ± 0.017	0.764TyrMet: 0.764 ± 0.008	1.269TyrAsn: 1.269 ± 0.01	1.246TyrPro: 1.246 ± 0.01	0.911TyrGln: 0.911 ± 0.008	1.463TyrArg: 1.463 ± 0.011	2.235TyrSer: 2.235 ± 0.015	1.347TyrThr: 1.347 ± 0.01	1.844TyrVal: 1.844 ± 0.011	0.397TyrTrp: 0.397 ± 0.005	1.032TyrTyr: 1.032 ± 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	0.398XaaXaa: 0.398 ± 0.176

Statistics based on 40809 proteins (15960268 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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