Amino acid dipepetide frequency for Sphingobacterium sp. JB170

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.

AlaCysAspGluPheGlyHisIleLysLeuMetAsnProGlnArgSerThrValTrpTyrXaa
Ala
5.469AlaAla: 5.469 ± 0.094
0.624AlaCys: 0.624 ± 0.024
3.98AlaAsp: 3.98 ± 0.055
4.202AlaGlu: 4.202 ± 0.058
3.295AlaPhe: 3.295 ± 0.051
5.101AlaGly: 5.101 ± 0.067
1.331AlaHis: 1.331 ± 0.031
5.434AlaIle: 5.434 ± 0.072
4.522AlaLys: 4.522 ± 0.065
6.977AlaLeu: 6.977 ± 0.086
1.663AlaMet: 1.663 ± 0.037
3.574AlaAsn: 3.574 ± 0.057
2.262AlaPro: 2.262 ± 0.043
3.09AlaGln: 3.09 ± 0.052
2.89AlaArg: 2.89 ± 0.05
4.81AlaSer: 4.81 ± 0.066
3.779AlaThr: 3.779 ± 0.055
4.712AlaVal: 4.712 ± 0.068
0.748AlaTrp: 0.748 ± 0.028
2.881AlaTyr: 2.881 ± 0.052
0.0AlaXaa: 0.0 ± 0.0
Cys
0.501CysAla: 0.501 ± 0.02
0.121CysCys: 0.121 ± 0.01
0.352CysAsp: 0.352 ± 0.016
0.396CysGlu: 0.396 ± 0.023
0.378CysPhe: 0.378 ± 0.017
0.572CysGly: 0.572 ± 0.025
0.185CysHis: 0.185 ± 0.013
0.577CysIle: 0.577 ± 0.022
0.384CysLys: 0.384 ± 0.018
0.719CysLeu: 0.719 ± 0.023
0.175CysMet: 0.175 ± 0.011
0.336CysAsn: 0.336 ± 0.014
0.278CysPro: 0.278 ± 0.016
0.245CysGln: 0.245 ± 0.014
0.287CysArg: 0.287 ± 0.016
0.564CysSer: 0.564 ± 0.024
0.443CysThr: 0.443 ± 0.018
0.46CysVal: 0.46 ± 0.018
0.089CysTrp: 0.089 ± 0.009
0.288CysTyr: 0.288 ± 0.015
0.0CysXaa: 0.0 ± 0.0
Asp
3.866AspAla: 3.866 ± 0.06
0.355AspCys: 0.355 ± 0.016
2.747AspAsp: 2.747 ± 0.058
3.519AspGlu: 3.519 ± 0.062
3.197AspPhe: 3.197 ± 0.048
3.966AspGly: 3.966 ± 0.057
1.069AspHis: 1.069 ± 0.031
4.265AspIle: 4.265 ± 0.067
3.758AspLys: 3.758 ± 0.053
5.201AspLeu: 5.201 ± 0.075
1.291AspMet: 1.291 ± 0.036
2.832AspAsn: 2.832 ± 0.054
2.219AspPro: 2.219 ± 0.044
2.163AspGln: 2.163 ± 0.042
2.617AspArg: 2.617 ± 0.041
3.105AspSer: 3.105 ± 0.063
2.61AspThr: 2.61 ± 0.048
3.483AspVal: 3.483 ± 0.05
0.835AspTrp: 0.835 ± 0.029
2.684AspTyr: 2.684 ± 0.051
0.0AspXaa: 0.0 ± 0.0
Glu
4.034GluAla: 4.034 ± 0.072
0.329GluCys: 0.329 ± 0.019
3.078GluAsp: 3.078 ± 0.058
3.941GluGlu: 3.941 ± 0.069
2.693GluPhe: 2.693 ± 0.05
3.573GluGly: 3.573 ± 0.053
1.322GluHis: 1.322 ± 0.038
4.883GluIle: 4.883 ± 0.069
4.626GluLys: 4.626 ± 0.074
6.097GluLeu: 6.097 ± 0.075
1.447GluMet: 1.447 ± 0.032
3.836GluAsn: 3.836 ± 0.067
1.722GluPro: 1.722 ± 0.036
3.024GluGln: 3.024 ± 0.058
3.158GluArg: 3.158 ± 0.059
3.342GluSer: 3.342 ± 0.053
3.12GluThr: 3.12 ± 0.047
3.945GluVal: 3.945 ± 0.051
0.667GluTrp: 0.667 ± 0.022
2.224GluTyr: 2.224 ± 0.039
0.0GluXaa: 0.0 ± 0.0
Phe
3.279PheAla: 3.279 ± 0.061
0.473PheCys: 0.473 ± 0.022
3.083PheAsp: 3.083 ± 0.056
2.915PheGlu: 2.915 ± 0.047
2.446PhePhe: 2.446 ± 0.055
3.51PheGly: 3.51 ± 0.059
0.93PheHis: 0.93 ± 0.027
3.36PheIle: 3.36 ± 0.056
2.849PheLys: 2.849 ± 0.054
4.468PheLeu: 4.468 ± 0.069
1.156PheMet: 1.156 ± 0.033
2.737PheAsn: 2.737 ± 0.051
1.766PhePro: 1.766 ± 0.037
1.725PheGln: 1.725 ± 0.043
1.981PheArg: 1.981 ± 0.042
3.759PheSer: 3.759 ± 0.058
2.828PheThr: 2.828 ± 0.05
3.061PheVal: 3.061 ± 0.057
0.57PheTrp: 0.57 ± 0.025
2.032PheTyr: 2.032 ± 0.041
0.0PheXaa: 0.0 ± 0.0
Gly
4.862GlyAla: 4.862 ± 0.081
0.568GlyCys: 0.568 ± 0.026
3.541GlyAsp: 3.541 ± 0.061
3.879GlyGlu: 3.879 ± 0.059
3.624GlyPhe: 3.624 ± 0.061
4.879GlyGly: 4.879 ± 0.088
1.242GlyHis: 1.242 ± 0.031
5.304GlyIle: 5.304 ± 0.068
4.684GlyLys: 4.684 ± 0.063
6.206GlyLeu: 6.206 ± 0.079
1.789GlyMet: 1.789 ± 0.038
3.643GlyAsn: 3.643 ± 0.066
1.607GlyPro: 1.607 ± 0.034
2.491GlyGln: 2.491 ± 0.049
2.944GlyArg: 2.944 ± 0.046
4.4GlySer: 4.4 ± 0.07
4.082GlyThr: 4.082 ± 0.066
4.833GlyVal: 4.833 ± 0.066
0.968GlyTrp: 0.968 ± 0.032
3.199GlyTyr: 3.199 ± 0.057
0.0GlyXaa: 0.0 ± 0.0
His
1.34HisAla: 1.34 ± 0.035
0.185HisCys: 0.185 ± 0.012
0.972HisAsp: 0.972 ± 0.026
1.046HisGlu: 1.046 ± 0.028
1.126HisPhe: 1.126 ± 0.031
1.305HisGly: 1.305 ± 0.031
0.518HisHis: 0.518 ± 0.023
1.561HisIle: 1.561 ± 0.038
1.041HisLys: 1.041 ± 0.027
1.911HisLeu: 1.911 ± 0.041
0.398HisMet: 0.398 ± 0.019
0.943HisAsn: 0.943 ± 0.03
0.991HisPro: 0.991 ± 0.029
0.831HisGln: 0.831 ± 0.026
0.918HisArg: 0.918 ± 0.025
1.152HisSer: 1.152 ± 0.031
1.067HisThr: 1.067 ± 0.031
1.108HisVal: 1.108 ± 0.027
0.28HisTrp: 0.28 ± 0.014
0.871HisTyr: 0.871 ± 0.028
0.0HisXaa: 0.0 ± 0.0
Ile
5.744IleAla: 5.744 ± 0.065
0.652IleCys: 0.652 ± 0.024
4.713IleAsp: 4.713 ± 0.054
4.67IleGlu: 4.67 ± 0.063
3.178IlePhe: 3.178 ± 0.057
5.14IleGly: 5.14 ± 0.079
1.401IleHis: 1.401 ± 0.04
4.969IleIle: 4.969 ± 0.075
4.488IleLys: 4.488 ± 0.063
6.385IleLeu: 6.385 ± 0.089
1.393IleMet: 1.393 ± 0.033
3.863IleAsn: 3.863 ± 0.062
3.14IlePro: 3.14 ± 0.042
2.717IleGln: 2.717 ± 0.047
3.251IleArg: 3.251 ± 0.048
5.088IleSer: 5.088 ± 0.058
4.132IleThr: 4.132 ± 0.067
4.47IleVal: 4.47 ± 0.067
0.698IleTrp: 0.698 ± 0.027
2.606IleTyr: 2.606 ± 0.043
0.0IleXaa: 0.0 ± 0.0
Lys
4.245LysAla: 4.245 ± 0.064
0.266LysCys: 0.266 ± 0.015
3.752LysAsp: 3.752 ± 0.056
4.532LysGlu: 4.532 ± 0.075
2.518LysPhe: 2.518 ± 0.048
4.164LysGly: 4.164 ± 0.057
1.334LysHis: 1.334 ± 0.033
4.861LysIle: 4.861 ± 0.065
4.786LysLys: 4.786 ± 0.073
5.702LysLeu: 5.702 ± 0.073
1.791LysMet: 1.791 ± 0.038
3.759LysAsn: 3.759 ± 0.052
2.278LysPro: 2.278 ± 0.042
2.736LysGln: 2.736 ± 0.054
2.914LysArg: 2.914 ± 0.051
3.963LysSer: 3.963 ± 0.058
3.669LysThr: 3.669 ± 0.053
4.087LysVal: 4.087 ± 0.059
0.755LysTrp: 0.755 ± 0.028
2.534LysTyr: 2.534 ± 0.041
0.0LysXaa: 0.0 ± 0.0
Leu
6.974LeuAla: 6.974 ± 0.081
0.78LeuCys: 0.78 ± 0.024
5.101LeuAsp: 5.101 ± 0.068
5.606LeuGlu: 5.606 ± 0.075
4.588LeuPhe: 4.588 ± 0.076
6.189LeuGly: 6.189 ± 0.082
1.766LeuHis: 1.766 ± 0.038
6.28LeuIle: 6.28 ± 0.089
6.267LeuLys: 6.267 ± 0.064
9.095LeuLeu: 9.095 ± 0.111
2.129LeuMet: 2.129 ± 0.043
5.057LeuAsn: 5.057 ± 0.071
3.901LeuPro: 3.901 ± 0.059
3.664LeuGln: 3.664 ± 0.063
4.094LeuArg: 4.094 ± 0.06
7.09LeuSer: 7.09 ± 0.086
5.384LeuThr: 5.384 ± 0.069
5.652LeuVal: 5.652 ± 0.076
0.991LeuTrp: 0.991 ± 0.027
3.455LeuTyr: 3.455 ± 0.057
0.0LeuXaa: 0.0 ± 0.0
Met
1.686MetAla: 1.686 ± 0.04
0.14MetCys: 0.14 ± 0.01
1.362MetAsp: 1.362 ± 0.033
1.479MetGlu: 1.479 ± 0.033
0.902MetPhe: 0.902 ± 0.026
1.556MetGly: 1.556 ± 0.039
0.471MetHis: 0.471 ± 0.018
1.5MetIle: 1.5 ± 0.036
1.725MetLys: 1.725 ± 0.037
2.294MetLeu: 2.294 ± 0.046
0.622MetMet: 0.622 ± 0.025
1.323MetAsn: 1.323 ± 0.032
0.978MetPro: 0.978 ± 0.033
1.027MetGln: 1.027 ± 0.03
1.081MetArg: 1.081 ± 0.031
1.439MetSer: 1.439 ± 0.03
1.161MetThr: 1.161 ± 0.032
1.424MetVal: 1.424 ± 0.042
0.237MetTrp: 0.237 ± 0.014
0.724MetTyr: 0.724 ± 0.025
0.0MetXaa: 0.0 ± 0.0
Asn
3.656AsnAla: 3.656 ± 0.059
0.311AsnCys: 0.311 ± 0.014
2.804AsnAsp: 2.804 ± 0.049
3.119AsnGlu: 3.119 ± 0.048
2.679AsnPhe: 2.679 ± 0.046
3.743AsnGly: 3.743 ± 0.064
0.98AsnHis: 0.98 ± 0.028
4.218AsnIle: 4.218 ± 0.06
3.487AsnLys: 3.487 ± 0.054
4.915AsnLeu: 4.915 ± 0.066
1.318AsnMet: 1.318 ± 0.038
2.982AsnAsn: 2.982 ± 0.056
2.493AsnPro: 2.493 ± 0.052
2.068AsnGln: 2.068 ± 0.044
2.417AsnArg: 2.417 ± 0.045
3.36AsnSer: 3.36 ± 0.06
3.104AsnThr: 3.104 ± 0.06
3.279AsnVal: 3.279 ± 0.052
0.743AsnTrp: 0.743 ± 0.029
2.482AsnTyr: 2.482 ± 0.053
0.0AsnXaa: 0.0 ± 0.0
Pro
2.65ProAla: 2.65 ± 0.056
0.2ProCys: 0.2 ± 0.013
2.209ProAsp: 2.209 ± 0.04
2.848ProGlu: 2.848 ± 0.044
1.881ProPhe: 1.881 ± 0.039
2.375ProGly: 2.375 ± 0.044
0.715ProHis: 0.715 ± 0.024
2.726ProIle: 2.726 ± 0.048
2.105ProLys: 2.105 ± 0.039
3.31ProLeu: 3.31 ± 0.05
0.763ProMet: 0.763 ± 0.026
1.982ProAsn: 1.982 ± 0.035
0.863ProPro: 0.863 ± 0.029
1.518ProGln: 1.518 ± 0.034
1.303ProArg: 1.303 ± 0.03
2.523ProSer: 2.523 ± 0.048
2.124ProThr: 2.124 ± 0.039
2.62ProVal: 2.62 ± 0.047
0.449ProTrp: 0.449 ± 0.018
1.515ProTyr: 1.515 ± 0.037
0.0ProXaa: 0.0 ± 0.0
Gln
2.87GlnAla: 2.87 ± 0.046
0.18GlnCys: 0.18 ± 0.012
2.044GlnAsp: 2.044 ± 0.044
2.734GlnGlu: 2.734 ± 0.045
1.69GlnPhe: 1.69 ± 0.041
2.677GlnGly: 2.677 ± 0.045
0.878GlnHis: 0.878 ± 0.028
2.779GlnIle: 2.779 ± 0.046
2.653GlnLys: 2.653 ± 0.052
3.817GlnLeu: 3.817 ± 0.055
0.939GlnMet: 0.939 ± 0.027
2.155GlnAsn: 2.155 ± 0.049
1.253GlnPro: 1.253 ± 0.03
2.163GlnGln: 2.163 ± 0.056
1.811GlnArg: 1.811 ± 0.038
2.298GlnSer: 2.298 ± 0.042
2.373GlnThr: 2.373 ± 0.044
2.504GlnVal: 2.504 ± 0.041
0.486GlnTrp: 0.486 ± 0.018
1.545GlnTyr: 1.545 ± 0.04
0.0GlnXaa: 0.0 ± 0.0
Arg
2.998ArgAla: 2.998 ± 0.051
0.271ArgCys: 0.271 ± 0.016
2.352ArgAsp: 2.352 ± 0.047
2.686ArgGlu: 2.686 ± 0.045
2.221ArgPhe: 2.221 ± 0.045
2.578ArgGly: 2.578 ± 0.047
0.787ArgHis: 0.787 ± 0.025
3.274ArgIle: 3.274 ± 0.047
3.067ArgLys: 3.067 ± 0.05
4.087ArgLeu: 4.087 ± 0.061
1.147ArgMet: 1.147 ± 0.029
2.485ArgAsn: 2.485 ± 0.046
1.527ArgPro: 1.527 ± 0.037
1.615ArgGln: 1.615 ± 0.033
1.897ArgArg: 1.897 ± 0.045
2.628ArgSer: 2.628 ± 0.048
2.42ArgThr: 2.42 ± 0.043
2.783ArgVal: 2.783 ± 0.051
0.633ArgTrp: 0.633 ± 0.026
2.141ArgTyr: 2.141 ± 0.04
0.0ArgXaa: 0.0 ± 0.0
Ser
4.727SerAla: 4.727 ± 0.068
0.596SerCys: 0.596 ± 0.022
3.484SerAsp: 3.484 ± 0.056
3.697SerGlu: 3.697 ± 0.057
3.679SerPhe: 3.679 ± 0.059
4.964SerGly: 4.964 ± 0.068
1.157SerHis: 1.157 ± 0.029
4.832SerIle: 4.832 ± 0.065
3.922SerLys: 3.922 ± 0.056
6.3SerLeu: 6.3 ± 0.073
1.379SerMet: 1.379 ± 0.032
3.256SerAsn: 3.256 ± 0.058
2.457SerPro: 2.457 ± 0.046
2.169SerGln: 2.169 ± 0.043
2.733SerArg: 2.733 ± 0.043
4.548SerSer: 4.548 ± 0.072
3.768SerThr: 3.768 ± 0.049
4.35SerVal: 4.35 ± 0.056
0.796SerTrp: 0.796 ± 0.03
2.898SerTyr: 2.898 ± 0.05
0.0SerXaa: 0.0 ± 0.0
Thr
4.202ThrAla: 4.202 ± 0.065
0.332ThrCys: 0.332 ± 0.016
3.227ThrAsp: 3.227 ± 0.055
3.094ThrGlu: 3.094 ± 0.055
2.831ThrPhe: 2.831 ± 0.048
4.392ThrGly: 4.392 ± 0.066
1.074ThrHis: 1.074 ± 0.031
4.12ThrIle: 4.12 ± 0.057
3.243ThrLys: 3.243 ± 0.048
5.374ThrLeu: 5.374 ± 0.076
1.081ThrMet: 1.081 ± 0.031
2.793ThrAsn: 2.793 ± 0.059
2.476ThrPro: 2.476 ± 0.039
2.028ThrGln: 2.028 ± 0.044
2.031ThrArg: 2.031 ± 0.043
3.628ThrSer: 3.628 ± 0.051
3.129ThrThr: 3.129 ± 0.053
3.757ThrVal: 3.757 ± 0.06
0.593ThrTrp: 0.593 ± 0.024
2.289ThrTyr: 2.289 ± 0.05
0.0ThrXaa: 0.0 ± 0.0
Val
4.58ValAla: 4.58 ± 0.069
0.557ValCys: 0.557 ± 0.023
3.824ValAsp: 3.824 ± 0.062
3.847ValGlu: 3.847 ± 0.053
3.151ValPhe: 3.151 ± 0.056
4.274ValGly: 4.274 ± 0.068
1.228ValHis: 1.228 ± 0.036
4.4ValIle: 4.4 ± 0.068
3.802ValLys: 3.802 ± 0.059
6.194ValLeu: 6.194 ± 0.087
1.424ValMet: 1.424 ± 0.036
3.497ValAsn: 3.497 ± 0.049
2.482ValPro: 2.482 ± 0.048
2.271ValGln: 2.271 ± 0.045
2.732ValArg: 2.732 ± 0.048
4.568ValSer: 4.568 ± 0.066
3.512ValThr: 3.512 ± 0.066
4.349ValVal: 4.349 ± 0.071
0.715ValTrp: 0.715 ± 0.027
2.447ValTyr: 2.447 ± 0.048
0.0ValXaa: 0.0 ± 0.0
Trp
0.746TrpAla: 0.746 ± 0.03
0.1TrpCys: 0.1 ± 0.009
0.759TrpAsp: 0.759 ± 0.025
0.726TrpGlu: 0.726 ± 0.023
0.536TrpPhe: 0.536 ± 0.022
0.86TrpGly: 0.86 ± 0.027
0.264TrpHis: 0.264 ± 0.014
0.784TrpIle: 0.784 ± 0.027
0.812TrpLys: 0.812 ± 0.027
1.101TrpLeu: 1.101 ± 0.029
0.361TrpMet: 0.361 ± 0.016
0.73TrpAsn: 0.73 ± 0.026
0.335TrpPro: 0.335 ± 0.018
0.515TrpGln: 0.515 ± 0.02
0.528TrpArg: 0.528 ± 0.019
0.734TrpSer: 0.734 ± 0.031
0.675TrpThr: 0.675 ± 0.027
0.729TrpVal: 0.729 ± 0.027
0.179TrpTrp: 0.179 ± 0.012
0.478TrpTyr: 0.478 ± 0.022
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.915TyrAla: 2.915 ± 0.048
0.314TyrCys: 0.314 ± 0.017
2.398TyrAsp: 2.398 ± 0.048
2.125TyrGlu: 2.125 ± 0.042
2.315TyrPhe: 2.315 ± 0.046
2.93TyrGly: 2.93 ± 0.057
0.911TyrHis: 0.911 ± 0.027
2.569TyrIle: 2.569 ± 0.044
2.426TyrLys: 2.426 ± 0.043
3.912TyrLeu: 3.912 ± 0.057
0.864TyrMet: 0.864 ± 0.027
2.376TyrAsn: 2.376 ± 0.051
1.649TyrPro: 1.649 ± 0.036
1.79TyrGln: 1.79 ± 0.046
2.007TyrArg: 2.007 ± 0.041
2.712TyrSer: 2.712 ± 0.056
2.317TyrThr: 2.317 ± 0.046
2.246TyrVal: 2.246 ± 0.045
0.519TyrTrp: 0.519 ± 0.021
1.882TyrTyr: 1.882 ± 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 4094 proteins (1274958 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
See this proteome in: uniprot_link
Proteome-pI is available under Creative Commons Attribution-NoDerivs license, for more details see here

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