Amino acid dipepetide frequency for Sousa chinensis (Indo-pacific humpbacked dolphin) (Steno chinensis)

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	7.311AlaAla: 7.311 ± 0.081	1.468AlaCys: 1.468 ± 0.026	2.905AlaAsp: 2.905 ± 0.026	4.845AlaGlu: 4.845 ± 0.053	2.647AlaPhe: 2.647 ± 0.035	5.183AlaGly: 5.183 ± 0.058	1.636AlaHis: 1.636 ± 0.024	2.625AlaIle: 2.625 ± 0.03	3.369AlaLys: 3.369 ± 0.044	7.466AlaLeu: 7.466 ± 0.063	1.418AlaMet: 1.418 ± 0.021	1.939AlaAsn: 1.939 ± 0.027	4.654AlaPro: 4.654 ± 0.069	3.226AlaGln: 3.226 ± 0.032	3.985AlaArg: 3.985 ± 0.045	5.932AlaSer: 5.932 ± 0.055	3.578AlaThr: 3.578 ± 0.037	4.891AlaVal: 4.891 ± 0.047	0.84AlaTrp: 0.84 ± 0.019	1.534AlaTyr: 1.534 ± 0.021	0.002AlaXaa: 0.002 ± 0.001
Cys	1.325CysAla: 1.325 ± 0.026	0.65CysCys: 0.65 ± 0.018	1.009CysAsp: 1.009 ± 0.022	1.27CysGlu: 1.27 ± 0.03	0.875CysPhe: 0.875 ± 0.018	1.746CysGly: 1.746 ± 0.045	0.695CysHis: 0.695 ± 0.018	0.926CysIle: 0.926 ± 0.018	1.1CysLys: 1.1 ± 0.022	2.231CysLeu: 2.231 ± 0.035	0.414CysMet: 0.414 ± 0.01	0.815CysAsn: 0.815 ± 0.019	1.543CysPro: 1.543 ± 0.034	1.059CysGln: 1.059 ± 0.027	1.359CysArg: 1.359 ± 0.024	2.074CysSer: 2.074 ± 0.036	1.117CysThr: 1.117 ± 0.022	1.329CysVal: 1.329 ± 0.027	0.293CysTrp: 0.293 ± 0.009	0.594CysTyr: 0.594 ± 0.015	0.0CysXaa: 0.0 ± 0.0
Asp	2.829AspAla: 2.829 ± 0.028	1.055AspCys: 1.055 ± 0.024	2.527AspAsp: 2.527 ± 0.036	3.341AspGlu: 3.341 ± 0.041	2.086AspPhe: 2.086 ± 0.028	3.291AspGly: 3.291 ± 0.049	1.134AspHis: 1.134 ± 0.018	2.469AspIle: 2.469 ± 0.032	2.433AspLys: 2.433 ± 0.028	4.936AspLeu: 4.936 ± 0.041	1.045AspMet: 1.045 ± 0.016	1.596AspAsn: 1.596 ± 0.029	2.996AspPro: 2.996 ± 0.034	1.773AspGln: 1.773 ± 0.028	2.464AspArg: 2.464 ± 0.034	4.124AspSer: 4.124 ± 0.061	2.396AspThr: 2.396 ± 0.028	3.069AspVal: 3.069 ± 0.028	0.64AspTrp: 0.64 ± 0.014	1.441AspTyr: 1.441 ± 0.027	0.0AspXaa: 0.0 ± 0.0
Glu	5.447GluAla: 5.447 ± 0.057	1.376GluCys: 1.376 ± 0.046	4.38GluAsp: 4.38 ± 0.043	7.811GluGlu: 7.811 ± 0.097	1.992GluPhe: 1.992 ± 0.026	4.384GluGly: 4.384 ± 0.042	1.5GluHis: 1.5 ± 0.024	3.055GluIle: 3.055 ± 0.038	5.211GluLys: 5.211 ± 0.072	6.442GluLeu: 6.442 ± 0.068	1.608GluMet: 1.608 ± 0.023	2.97GluAsn: 2.97 ± 0.042	3.381GluPro: 3.381 ± 0.041	3.043GluGln: 3.043 ± 0.039	3.962GluArg: 3.962 ± 0.048	4.278GluSer: 4.278 ± 0.044	3.348GluThr: 3.348 ± 0.039	4.162GluVal: 4.162 ± 0.04	0.701GluTrp: 0.701 ± 0.013	1.523GluTyr: 1.523 ± 0.02	0.0GluXaa: 0.0 ± 0.0
Phe	1.993PheAla: 1.993 ± 0.026	0.946PheCys: 0.946 ± 0.019	1.609PheAsp: 1.609 ± 0.027	1.982PheGlu: 1.982 ± 0.025	1.574PhePhe: 1.574 ± 0.025	2.214PheGly: 2.214 ± 0.033	1.082PheHis: 1.082 ± 0.016	1.752PheIle: 1.752 ± 0.029	1.748PheLys: 1.748 ± 0.021	4.116PheLeu: 4.116 ± 0.046	0.711PheMet: 0.711 ± 0.013	1.292PheAsn: 1.292 ± 0.021	2.1PhePro: 2.1 ± 0.031	1.81PheGln: 1.81 ± 0.021	1.957PheArg: 1.957 ± 0.03	3.439PheSer: 3.439 ± 0.036	1.98PheThr: 1.98 ± 0.025	2.142PheVal: 2.142 ± 0.028	0.489PheTrp: 0.489 ± 0.014	1.162PheTyr: 1.162 ± 0.02	0.0PheXaa: 0.0 ± 0.0
Gly	4.933GlyAla: 4.933 ± 0.062	1.352GlyCys: 1.352 ± 0.025	3.182GlyAsp: 3.182 ± 0.041	4.252GlyGlu: 4.252 ± 0.055	2.425GlyPhe: 2.425 ± 0.04	5.535GlyGly: 5.535 ± 0.085	1.746GlyHis: 1.746 ± 0.032	2.699GlyIle: 2.699 ± 0.032	3.752GlyLys: 3.752 ± 0.045	6.2GlyLeu: 6.2 ± 0.06	1.256GlyMet: 1.256 ± 0.021	2.287GlyAsn: 2.287 ± 0.031	4.79GlyPro: 4.79 ± 0.1	2.903GlyGln: 2.903 ± 0.036	4.106GlyArg: 4.106 ± 0.044	6.001GlySer: 6.001 ± 0.069	3.774GlyThr: 3.774 ± 0.047	3.62GlyVal: 3.62 ± 0.036	0.829GlyTrp: 0.829 ± 0.017	1.716GlyTyr: 1.716 ± 0.028	0.004GlyXaa: 0.004 ± 0.001
His	1.411HisAla: 1.411 ± 0.023	0.74HisCys: 0.74 ± 0.017	0.904HisAsp: 0.904 ± 0.015	1.272HisGlu: 1.272 ± 0.02	1.083HisPhe: 1.083 ± 0.02	1.629HisGly: 1.629 ± 0.024	0.863HisHis: 0.863 ± 0.02	1.216HisIle: 1.216 ± 0.022	1.212HisLys: 1.212 ± 0.016	2.934HisLeu: 2.934 ± 0.032	0.593HisMet: 0.593 ± 0.015	0.817HisAsn: 0.817 ± 0.015	1.701HisPro: 1.701 ± 0.028	1.297HisGln: 1.297 ± 0.028	1.649HisArg: 1.649 ± 0.024	2.264HisSer: 2.264 ± 0.024	1.473HisThr: 1.473 ± 0.029	1.556HisVal: 1.556 ± 0.024	0.374HisTrp: 0.374 ± 0.011	0.815HisTyr: 0.815 ± 0.017	0.0HisXaa: 0.0 ± 0.0
Ile	2.455IleAla: 2.455 ± 0.027	1.056IleCys: 1.056 ± 0.022	1.93IleAsp: 1.93 ± 0.028	2.494IleGlu: 2.494 ± 0.033	1.817IlePhe: 1.817 ± 0.029	2.117IleGly: 2.117 ± 0.028	1.274IleHis: 1.274 ± 0.026	2.24IleIle: 2.24 ± 0.036	2.515IleLys: 2.515 ± 0.034	4.438IleLeu: 4.438 ± 0.05	0.927IleMet: 0.927 ± 0.019	1.706IleAsn: 1.706 ± 0.027	2.616IlePro: 2.616 ± 0.033	2.233IleGln: 2.233 ± 0.03	2.331IleArg: 2.331 ± 0.029	3.586IleSer: 3.586 ± 0.039	2.531IleThr: 2.531 ± 0.033	2.403IleVal: 2.403 ± 0.032	0.516IleTrp: 0.516 ± 0.013	1.324IleTyr: 1.324 ± 0.023	0.001IleXaa: 0.001 ± 0.001
Lys	3.953LysAla: 3.953 ± 0.044	1.095LysCys: 1.095 ± 0.026	2.988LysAsp: 2.988 ± 0.034	5.015LysGlu: 5.015 ± 0.077	1.683LysPhe: 1.683 ± 0.026	3.286LysGly: 3.286 ± 0.057	1.381LysHis: 1.381 ± 0.02	2.713LysIle: 2.713 ± 0.038	4.593LysLys: 4.593 ± 0.065	5.045LysLeu: 5.045 ± 0.065	1.375LysMet: 1.375 ± 0.022	2.292LysAsn: 2.292 ± 0.032	2.986LysPro: 2.986 ± 0.046	2.539LysGln: 2.539 ± 0.038	3.274LysArg: 3.274 ± 0.04	3.763LysSer: 3.763 ± 0.046	3.03LysThr: 3.03 ± 0.037	3.381LysVal: 3.381 ± 0.04	0.585LysTrp: 0.585 ± 0.014	1.537LysTyr: 1.537 ± 0.029	0.0LysXaa: 0.0 ± 0.0
Leu	7.006LeuAla: 7.006 ± 0.062	2.276LeuCys: 2.276 ± 0.035	4.734LeuAsp: 4.734 ± 0.044	7.063LeuGlu: 7.063 ± 0.078	3.432LeuPhe: 3.432 ± 0.042	6.133LeuGly: 6.133 ± 0.047	2.784LeuHis: 2.784 ± 0.029	3.853LeuIle: 3.853 ± 0.046	5.746LeuLys: 5.746 ± 0.065	10.933LeuLeu: 10.933 ± 0.094	1.927LeuMet: 1.927 ± 0.027	3.415LeuAsn: 3.415 ± 0.037	6.28LeuPro: 6.28 ± 0.059	5.811LeuGln: 5.811 ± 0.064	6.045LeuArg: 6.045 ± 0.055	8.187LeuSer: 8.187 ± 0.058	5.132LeuThr: 5.132 ± 0.046	5.618LeuVal: 5.618 ± 0.052	1.18LeuTrp: 1.18 ± 0.018	2.56LeuTyr: 2.56 ± 0.035	0.001LeuXaa: 0.001 ± 0.0
Met	1.801MetAla: 1.801 ± 0.026	0.38MetCys: 0.38 ± 0.011	1.144MetAsp: 1.144 ± 0.015	1.773MetGlu: 1.773 ± 0.024	0.683MetPhe: 0.683 ± 0.015	1.272MetGly: 1.272 ± 0.021	0.454MetHis: 0.454 ± 0.01	0.795MetIle: 0.795 ± 0.016	1.352MetLys: 1.352 ± 0.024	1.881MetLeu: 1.881 ± 0.025	0.513MetMet: 0.513 ± 0.012	0.835MetAsn: 0.835 ± 0.017	1.095MetPro: 1.095 ± 0.018	0.911MetGln: 0.911 ± 0.019	0.994MetArg: 0.994 ± 0.018	1.471MetSer: 1.471 ± 0.022	1.084MetThr: 1.084 ± 0.019	1.317MetVal: 1.317 ± 0.022	0.238MetTrp: 0.238 ± 0.008	0.53MetTyr: 0.53 ± 0.013	0.0MetXaa: 0.0 ± 0.0
Asn	2.0AsnAla: 2.0 ± 0.025	0.856AsnCys: 0.856 ± 0.021	1.428AsnAsp: 1.428 ± 0.028	2.1AsnGlu: 2.1 ± 0.032	1.438AsnPhe: 1.438 ± 0.021	2.33AsnGly: 2.33 ± 0.04	0.9AsnHis: 0.9 ± 0.014	2.012AsnIle: 2.012 ± 0.03	2.113AsnLys: 2.113 ± 0.036	3.602AsnLeu: 3.602 ± 0.037	0.871AsnMet: 0.871 ± 0.017	1.438AsnAsn: 1.438 ± 0.022	2.065AsnPro: 2.065 ± 0.027	1.579AsnGln: 1.579 ± 0.024	1.774AsnArg: 1.774 ± 0.024	3.01AsnSer: 3.01 ± 0.043	1.866AsnThr: 1.866 ± 0.026	2.153AsnVal: 2.153 ± 0.025	0.442AsnTrp: 0.442 ± 0.011	1.068AsnTyr: 1.068 ± 0.022	0.0AsnXaa: 0.0 ± 0.0
Pro	5.345ProAla: 5.345 ± 0.07	1.247ProCys: 1.247 ± 0.026	2.841ProAsp: 2.841 ± 0.033	4.586ProGlu: 4.586 ± 0.046	1.928ProPhe: 1.928 ± 0.024	5.906ProGly: 5.906 ± 0.145	1.474ProHis: 1.474 ± 0.026	1.832ProIle: 1.832 ± 0.027	2.72ProLys: 2.72 ± 0.035	5.519ProLeu: 5.519 ± 0.053	0.989ProMet: 0.989 ± 0.019	1.794ProAsn: 1.794 ± 0.024	6.395ProPro: 6.395 ± 0.125	2.899ProGln: 2.899 ± 0.034	3.63ProArg: 3.63 ± 0.05	5.938ProSer: 5.938 ± 0.067	3.076ProThr: 3.076 ± 0.035	3.942ProVal: 3.942 ± 0.041	0.736ProTrp: 0.736 ± 0.016	1.494ProTyr: 1.494 ± 0.032	0.002ProXaa: 0.002 ± 0.001
Gln	3.544GlnAla: 3.544 ± 0.04	0.938GlnCys: 0.938 ± 0.023	2.272GlnAsp: 2.272 ± 0.027	3.824GlnGlu: 3.824 ± 0.045	1.337GlnPhe: 1.337 ± 0.021	2.977GlnGly: 2.977 ± 0.036	1.261GlnHis: 1.261 ± 0.021	1.926GlnIle: 1.926 ± 0.028	2.88GlnLys: 2.88 ± 0.038	4.801GlnLeu: 4.801 ± 0.06	1.057GlnMet: 1.057 ± 0.02	1.798GlnAsn: 1.798 ± 0.021	2.833GlnPro: 2.833 ± 0.04	2.872GlnGln: 2.872 ± 0.066	2.991GlnArg: 2.991 ± 0.035	3.068GlnSer: 3.068 ± 0.041	2.246GlnThr: 2.246 ± 0.028	2.849GlnVal: 2.849 ± 0.035	0.579GlnTrp: 0.579 ± 0.011	1.137GlnTyr: 1.137 ± 0.018	0.001GlnXaa: 0.001 ± 0.0
Arg	4.215ArgAla: 4.215 ± 0.045	1.307ArgCys: 1.307 ± 0.029	2.716ArgAsp: 2.716 ± 0.033	4.056ArgGlu: 4.056 ± 0.043	1.896ArgPhe: 1.896 ± 0.024	3.992ArgGly: 3.992 ± 0.06	1.55ArgHis: 1.55 ± 0.027	2.367ArgIle: 2.367 ± 0.033	3.681ArgLys: 3.681 ± 0.043	5.605ArgLeu: 5.605 ± 0.053	1.135ArgMet: 1.135 ± 0.02	2.051ArgAsn: 2.051 ± 0.027	3.477ArgPro: 3.477 ± 0.051	2.636ArgGln: 2.636 ± 0.034	4.534ArgArg: 4.534 ± 0.048	4.325ArgSer: 4.325 ± 0.057	2.815ArgThr: 2.815 ± 0.03	3.26ArgVal: 3.26 ± 0.034	0.722ArgTrp: 0.722 ± 0.014	1.459ArgTyr: 1.459 ± 0.022	0.002ArgXaa: 0.002 ± 0.001
Ser	5.499SerAla: 5.499 ± 0.046	1.941SerCys: 1.941 ± 0.034	3.867SerAsp: 3.867 ± 0.06	5.223SerGlu: 5.223 ± 0.052	3.032SerPhe: 3.032 ± 0.03	5.838SerGly: 5.838 ± 0.064	2.127SerHis: 2.127 ± 0.027	3.136SerIle: 3.136 ± 0.031	3.913SerLys: 3.913 ± 0.046	8.375SerLeu: 8.375 ± 0.059	1.505SerMet: 1.505 ± 0.02	2.547SerAsn: 2.547 ± 0.036	6.145SerPro: 6.145 ± 0.086	3.82SerGln: 3.82 ± 0.042	4.631SerArg: 4.631 ± 0.049	9.239SerSer: 9.239 ± 0.116	4.264SerThr: 4.264 ± 0.045	4.89SerVal: 4.89 ± 0.04	1.091SerTrp: 1.091 ± 0.02	2.043SerTyr: 2.043 ± 0.029	0.001SerXaa: 0.001 ± 0.0
Thr	3.816ThrAla: 3.816 ± 0.041	1.315ThrCys: 1.315 ± 0.033	2.398ThrAsp: 2.398 ± 0.03	3.425ThrGlu: 3.425 ± 0.038	2.114ThrPhe: 2.114 ± 0.028	3.551ThrGly: 3.551 ± 0.05	1.275ThrHis: 1.275 ± 0.021	2.249ThrIle: 2.249 ± 0.032	2.598ThrLys: 2.598 ± 0.034	5.333ThrLeu: 5.333 ± 0.043	1.048ThrMet: 1.048 ± 0.019	1.683ThrAsn: 1.683 ± 0.022	3.569ThrPro: 3.569 ± 0.05	2.22ThrGln: 2.22 ± 0.026	2.521ThrArg: 2.521 ± 0.031	4.533ThrSer: 4.533 ± 0.052	2.834ThrThr: 2.834 ± 0.069	3.801ThrVal: 3.801 ± 0.042	0.668ThrTrp: 0.668 ± 0.016	1.395ThrTyr: 1.395 ± 0.017	0.001ThrXaa: 0.001 ± 0.0
Val	4.361ValAla: 4.361 ± 0.039	1.506ValCys: 1.506 ± 0.029	2.907ValAsp: 2.907 ± 0.033	3.772ValGlu: 3.772 ± 0.036	2.401ValPhe: 2.401 ± 0.029	3.523ValGly: 3.523 ± 0.035	1.593ValHis: 1.593 ± 0.022	2.79ValIle: 2.79 ± 0.032	3.34ValLys: 3.34 ± 0.043	6.358ValLeu: 6.358 ± 0.057	1.272ValMet: 1.272 ± 0.02	2.166ValAsn: 2.166 ± 0.03	3.765ValPro: 3.765 ± 0.04	2.802ValGln: 2.802 ± 0.032	3.18ValArg: 3.18 ± 0.034	4.857ValSer: 4.857 ± 0.041	3.721ValThr: 3.721 ± 0.044	4.008ValVal: 4.008 ± 0.039	0.742ValTrp: 0.742 ± 0.015	1.632ValTyr: 1.632 ± 0.024	0.0ValXaa: 0.0 ± 0.0
Trp	0.84TrpAla: 0.84 ± 0.016	0.244TrpCys: 0.244 ± 0.009	0.654TrpAsp: 0.654 ± 0.017	0.814TrpGlu: 0.814 ± 0.018	0.454TrpPhe: 0.454 ± 0.013	0.795TrpGly: 0.795 ± 0.016	0.315TrpHis: 0.315 ± 0.008	0.526TrpIle: 0.526 ± 0.014	0.795TrpLys: 0.795 ± 0.017	1.254TrpLeu: 1.254 ± 0.022	0.301TrpMet: 0.301 ± 0.011	0.528TrpAsn: 0.528 ± 0.013	0.56TrpPro: 0.56 ± 0.013	0.535TrpGln: 0.535 ± 0.013	0.783TrpArg: 0.783 ± 0.014	0.883TrpSer: 0.883 ± 0.019	0.672TrpThr: 0.672 ± 0.014	0.719TrpVal: 0.719 ± 0.016	0.203TrpTrp: 0.203 ± 0.007	0.341TrpTyr: 0.341 ± 0.011	0.001TrpXaa: 0.001 ± 0.0
Tyr	1.365TyrAla: 1.365 ± 0.02	0.679TyrCys: 0.679 ± 0.015	1.249TyrAsp: 1.249 ± 0.022	1.655TyrGlu: 1.655 ± 0.027	1.202TyrPhe: 1.202 ± 0.022	1.657TyrGly: 1.657 ± 0.032	0.759TyrHis: 0.759 ± 0.015	1.334TyrIle: 1.334 ± 0.023	1.444TyrLys: 1.444 ± 0.042	2.648TyrLeu: 2.648 ± 0.031	0.557TyrMet: 0.557 ± 0.013	1.076TyrAsn: 1.076 ± 0.018	1.339TyrPro: 1.339 ± 0.026	1.221TyrGln: 1.221 ± 0.018	1.626TyrArg: 1.626 ± 0.024	2.152TyrSer: 2.152 ± 0.029	1.407TyrThr: 1.407 ± 0.024	1.586TyrVal: 1.586 ± 0.023	0.346TyrTrp: 0.346 ± 0.01	0.93TyrTyr: 0.93 ± 0.017	0.0TyrXaa: 0.0 ± 0.0
Xaa	0.002XaaAla: 0.002 ± 0.001	0.0XaaCys: 0.0 ± 0.0	0.001XaaAsp: 0.001 ± 0.0	0.001XaaGlu: 0.001 ± 0.0	0.0XaaPhe: 0.0 ± 0.0	0.003XaaGly: 0.003 ± 0.001	0.0XaaHis: 0.0 ± 0.0	0.0XaaIle: 0.0 ± 0.0	0.0XaaLys: 0.0 ± 0.0	0.001XaaLeu: 0.001 ± 0.001	0.0XaaMet: 0.0 ± 0.0	0.0XaaAsn: 0.0 ± 0.0	0.005XaaPro: 0.005 ± 0.001	0.0XaaGln: 0.0 ± 0.0	0.002XaaArg: 0.002 ± 0.001	0.001XaaSer: 0.001 ± 0.001	0.0XaaThr: 0.0 ± 0.0	0.0XaaVal: 0.0 ± 0.0	0.0XaaTrp: 0.0 ± 0.0	0.0XaaTyr: 0.0 ± 0.0	0.013XaaXaa: 0.013 ± 0.006

Statistics based on 8382 proteins (3876492 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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