Amino acid dipepetide frequency for Clostridium sp. CT4

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
4.149AlaAla: 4.149 ± 0.07
0.601AlaCys: 0.601 ± 0.019
2.853AlaAsp: 2.853 ± 0.044
3.634AlaGlu: 3.634 ± 0.046
2.803AlaPhe: 2.803 ± 0.049
3.691AlaGly: 3.691 ± 0.062
0.83AlaHis: 0.83 ± 0.025
5.818AlaIle: 5.818 ± 0.074
4.683AlaLys: 4.683 ± 0.058
6.232AlaLeu: 6.232 ± 0.066
1.616AlaMet: 1.616 ± 0.031
2.824AlaAsn: 2.824 ± 0.041
1.516AlaPro: 1.516 ± 0.035
1.456AlaGln: 1.456 ± 0.028
1.881AlaArg: 1.881 ± 0.039
3.89AlaSer: 3.89 ± 0.053
3.053AlaThr: 3.053 ± 0.051
4.395AlaVal: 4.395 ± 0.061
0.425AlaTrp: 0.425 ± 0.018
2.308AlaTyr: 2.308 ± 0.044
0.0AlaXaa: 0.0 ± 0.0
Cys
0.55CysAla: 0.55 ± 0.019
0.184CysCys: 0.184 ± 0.011
0.627CysAsp: 0.627 ± 0.023
0.714CysGlu: 0.714 ± 0.022
0.505CysPhe: 0.505 ± 0.015
0.933CysGly: 0.933 ± 0.024
0.207CysHis: 0.207 ± 0.011
0.968CysIle: 0.968 ± 0.025
0.842CysLys: 0.842 ± 0.025
0.81CysLeu: 0.81 ± 0.02
0.252CysMet: 0.252 ± 0.013
0.65CysAsn: 0.65 ± 0.021
0.389CysPro: 0.389 ± 0.016
0.232CysGln: 0.232 ± 0.011
0.387CysArg: 0.387 ± 0.015
0.788CysSer: 0.788 ± 0.022
0.514CysThr: 0.514 ± 0.018
0.581CysVal: 0.581 ± 0.018
0.075CysTrp: 0.075 ± 0.007
0.484CysTyr: 0.484 ± 0.019
0.0CysXaa: 0.0 ± 0.0
Asp
2.75AspAla: 2.75 ± 0.046
0.567AspCys: 0.567 ± 0.02
2.834AspAsp: 2.834 ± 0.043
4.418AspGlu: 4.418 ± 0.053
2.869AspPhe: 2.869 ± 0.047
3.768AspGly: 3.768 ± 0.061
0.617AspHis: 0.617 ± 0.02
6.08AspIle: 6.08 ± 0.074
5.761AspLys: 5.761 ± 0.065
4.867AspLeu: 4.867 ± 0.058
1.553AspMet: 1.553 ± 0.029
3.516AspAsn: 3.516 ± 0.049
1.397AspPro: 1.397 ± 0.033
1.066AspGln: 1.066 ± 0.025
1.981AspArg: 1.981 ± 0.037
3.634AspSer: 3.634 ± 0.059
2.697AspThr: 2.697 ± 0.047
3.335AspVal: 3.335 ± 0.044
0.457AspTrp: 0.457 ± 0.018
2.719AspTyr: 2.719 ± 0.046
0.0AspXaa: 0.0 ± 0.0
Glu
4.654GluAla: 4.654 ± 0.06
0.555GluCys: 0.555 ± 0.019
4.311GluAsp: 4.311 ± 0.055
6.44GluGlu: 6.44 ± 0.089
2.835GluPhe: 2.835 ± 0.041
3.962GluGly: 3.962 ± 0.053
0.998GluHis: 0.998 ± 0.029
6.176GluIle: 6.176 ± 0.068
7.025GluLys: 7.025 ± 0.077
6.871GluLeu: 6.871 ± 0.083
1.728GluMet: 1.728 ± 0.03
4.525GluAsn: 4.525 ± 0.061
1.433GluPro: 1.433 ± 0.032
2.092GluGln: 2.092 ± 0.041
2.715GluArg: 2.715 ± 0.048
3.481GluSer: 3.481 ± 0.052
2.823GluThr: 2.823 ± 0.04
4.999GluVal: 4.999 ± 0.062
0.41GluTrp: 0.41 ± 0.019
2.908GluTyr: 2.908 ± 0.043
0.0GluXaa: 0.0 ± 0.0
Phe
2.343PheAla: 2.343 ± 0.038
0.517PheCys: 0.517 ± 0.016
2.664PheAsp: 2.664 ± 0.047
2.725PheGlu: 2.725 ± 0.042
2.064PhePhe: 2.064 ± 0.045
2.837PheGly: 2.837 ± 0.047
0.607PheHis: 0.607 ± 0.017
4.683PheIle: 4.683 ± 0.07
3.728PheLys: 3.728 ± 0.052
4.128PheLeu: 4.128 ± 0.063
1.16PheMet: 1.16 ± 0.027
2.897PheAsn: 2.897 ± 0.042
1.148PhePro: 1.148 ± 0.027
1.031PheGln: 1.031 ± 0.025
1.396PheArg: 1.396 ± 0.03
3.493PheSer: 3.493 ± 0.052
2.418PheThr: 2.418 ± 0.039
2.793PheVal: 2.793 ± 0.043
0.36PheTrp: 0.36 ± 0.014
1.952PheTyr: 1.952 ± 0.036
0.0PheXaa: 0.0 ± 0.0
Gly
3.89GlyAla: 3.89 ± 0.066
0.788GlyCys: 0.788 ± 0.026
3.302GlyAsp: 3.302 ± 0.053
4.046GlyGlu: 4.046 ± 0.058
3.165GlyPhe: 3.165 ± 0.047
4.032GlyGly: 4.032 ± 0.061
0.979GlyHis: 0.979 ± 0.025
6.209GlyIle: 6.209 ± 0.075
5.358GlyLys: 5.358 ± 0.061
5.414GlyLeu: 5.414 ± 0.062
1.618GlyMet: 1.618 ± 0.035
3.243GlyAsn: 3.243 ± 0.06
1.124GlyPro: 1.124 ± 0.036
1.644GlyGln: 1.644 ± 0.038
2.189GlyArg: 2.189 ± 0.036
4.033GlySer: 4.033 ± 0.056
3.562GlyThr: 3.562 ± 0.062
4.474GlyVal: 4.474 ± 0.058
0.581GlyTrp: 0.581 ± 0.021
2.978GlyTyr: 2.978 ± 0.044
0.0GlyXaa: 0.0 ± 0.0
His
0.613HisAla: 0.613 ± 0.018
0.218HisCys: 0.218 ± 0.012
0.728HisAsp: 0.728 ± 0.022
0.864HisGlu: 0.864 ± 0.025
0.683HisPhe: 0.683 ± 0.019
0.991HisGly: 0.991 ± 0.029
0.343HisHis: 0.343 ± 0.018
1.373HisIle: 1.373 ± 0.029
1.08HisLys: 1.08 ± 0.028
1.177HisLeu: 1.177 ± 0.028
0.366HisMet: 0.366 ± 0.014
0.77HisAsn: 0.77 ± 0.021
0.621HisPro: 0.621 ± 0.021
0.337HisGln: 0.337 ± 0.015
0.561HisArg: 0.561 ± 0.019
0.946HisSer: 0.946 ± 0.025
0.689HisThr: 0.689 ± 0.02
0.735HisVal: 0.735 ± 0.023
0.134HisTrp: 0.134 ± 0.01
0.618HisTyr: 0.618 ± 0.019
0.0HisXaa: 0.0 ± 0.0
Ile
5.814IleAla: 5.814 ± 0.066
1.118IleCys: 1.118 ± 0.026
5.724IleAsp: 5.724 ± 0.064
6.55IleGlu: 6.55 ± 0.073
4.082IlePhe: 4.082 ± 0.065
5.788IleGly: 5.788 ± 0.071
1.24IleHis: 1.24 ± 0.029
8.444IleIle: 8.444 ± 0.11
7.92IleLys: 7.92 ± 0.078
8.594IleLeu: 8.594 ± 0.09
2.181IleMet: 2.181 ± 0.032
6.054IleAsn: 6.054 ± 0.061
3.071IlePro: 3.071 ± 0.044
2.086IleGln: 2.086 ± 0.036
3.184IleArg: 3.184 ± 0.051
7.031IleSer: 7.031 ± 0.084
4.917IleThr: 4.917 ± 0.061
5.98IleVal: 5.98 ± 0.066
0.553IleTrp: 0.553 ± 0.02
3.61IleTyr: 3.61 ± 0.057
0.0IleXaa: 0.0 ± 0.0
Lys
5.461LysAla: 5.461 ± 0.064
0.702LysCys: 0.702 ± 0.023
5.957LysAsp: 5.957 ± 0.063
7.731LysGlu: 7.731 ± 0.084
3.079LysPhe: 3.079 ± 0.045
4.86LysGly: 4.86 ± 0.057
1.166LysHis: 1.166 ± 0.03
7.035LysIle: 7.035 ± 0.075
7.314LysLys: 7.314 ± 0.068
8.147LysLeu: 8.147 ± 0.074
2.002LysMet: 2.002 ± 0.035
5.737LysAsn: 5.737 ± 0.062
2.191LysPro: 2.191 ± 0.04
2.412LysGln: 2.412 ± 0.042
3.013LysArg: 3.013 ± 0.044
5.197LysSer: 5.197 ± 0.057
3.962LysThr: 3.962 ± 0.058
6.197LysVal: 6.197 ± 0.066
0.566LysTrp: 0.566 ± 0.017
4.003LysTyr: 4.003 ± 0.042
0.0LysXaa: 0.0 ± 0.0
Leu
5.486LeuAla: 5.486 ± 0.061
1.088LeuCys: 1.088 ± 0.029
5.311LeuAsp: 5.311 ± 0.055
6.323LeuGlu: 6.323 ± 0.083
3.939LeuPhe: 3.939 ± 0.062
5.908LeuGly: 5.908 ± 0.078
1.162LeuHis: 1.162 ± 0.027
8.385LeuIle: 8.385 ± 0.094
8.376LeuLys: 8.376 ± 0.079
8.259LeuLeu: 8.259 ± 0.107
2.319LeuMet: 2.319 ± 0.034
5.686LeuAsn: 5.686 ± 0.07
2.786LeuPro: 2.786 ± 0.043
2.312LeuGln: 2.312 ± 0.044
3.356LeuArg: 3.356 ± 0.048
7.222LeuSer: 7.222 ± 0.074
4.705LeuThr: 4.705 ± 0.059
5.614LeuVal: 5.614 ± 0.062
0.712LeuTrp: 0.712 ± 0.024
3.491LeuTyr: 3.491 ± 0.05
0.0LeuXaa: 0.0 ± 0.0
Met
1.6MetAla: 1.6 ± 0.036
0.233MetCys: 0.233 ± 0.013
1.545MetAsp: 1.545 ± 0.027
1.722MetGlu: 1.722 ± 0.032
1.012MetPhe: 1.012 ± 0.029
1.524MetGly: 1.524 ± 0.032
0.33MetHis: 0.33 ± 0.015
2.155MetIle: 2.155 ± 0.037
2.311MetLys: 2.311 ± 0.04
2.376MetLeu: 2.376 ± 0.038
0.673MetMet: 0.673 ± 0.021
1.649MetAsn: 1.649 ± 0.031
0.846MetPro: 0.846 ± 0.022
0.608MetGln: 0.608 ± 0.02
0.936MetArg: 0.936 ± 0.024
1.682MetSer: 1.682 ± 0.034
1.179MetThr: 1.179 ± 0.029
1.653MetVal: 1.653 ± 0.034
0.163MetTrp: 0.163 ± 0.01
0.882MetTyr: 0.882 ± 0.023
0.0MetXaa: 0.0 ± 0.0
Asn
2.938AsnAla: 2.938 ± 0.043
0.66AsnCys: 0.66 ± 0.022
3.03AsnAsp: 3.03 ± 0.046
3.833AsnGlu: 3.833 ± 0.049
2.571AsnPhe: 2.571 ± 0.04
3.791AsnGly: 3.791 ± 0.061
0.881AsnHis: 0.881 ± 0.025
6.582AsnIle: 6.582 ± 0.067
5.537AsnLys: 5.537 ± 0.058
5.442AsnLeu: 5.442 ± 0.066
1.543AsnMet: 1.543 ± 0.031
4.296AsnAsn: 4.296 ± 0.064
2.05AsnPro: 2.05 ± 0.041
1.519AsnGln: 1.519 ± 0.036
2.03AsnArg: 2.03 ± 0.034
4.244AsnSer: 4.244 ± 0.062
3.206AsnThr: 3.206 ± 0.054
3.403AsnVal: 3.403 ± 0.044
0.565AsnTrp: 0.565 ± 0.021
2.752AsnTyr: 2.752 ± 0.051
0.0AsnXaa: 0.0 ± 0.0
Pro
1.402ProAla: 1.402 ± 0.035
0.254ProCys: 0.254 ± 0.011
1.464ProAsp: 1.464 ± 0.036
2.142ProGlu: 2.142 ± 0.041
1.406ProPhe: 1.406 ± 0.028
1.589ProGly: 1.589 ± 0.036
0.452ProHis: 0.452 ± 0.016
2.589ProIle: 2.589 ± 0.037
2.174ProLys: 2.174 ± 0.036
2.492ProLeu: 2.492 ± 0.041
0.702ProMet: 0.702 ± 0.019
1.559ProAsn: 1.559 ± 0.04
0.6ProPro: 0.6 ± 0.019
0.796ProGln: 0.796 ± 0.025
0.849ProArg: 0.849 ± 0.023
1.961ProSer: 1.961 ± 0.037
1.569ProThr: 1.569 ± 0.039
2.066ProVal: 2.066 ± 0.053
0.276ProTrp: 0.276 ± 0.016
1.292ProTyr: 1.292 ± 0.03
0.0ProXaa: 0.0 ± 0.0
Gln
1.579GlnAla: 1.579 ± 0.034
0.301GlnCys: 0.301 ± 0.013
1.299GlnAsp: 1.299 ± 0.028
1.689GlnGlu: 1.689 ± 0.032
1.071GlnPhe: 1.071 ± 0.022
1.668GlnGly: 1.668 ± 0.029
0.338GlnHis: 0.338 ± 0.015
2.144GlnIle: 2.144 ± 0.038
1.96GlnLys: 1.96 ± 0.037
2.407GlnLeu: 2.407 ± 0.039
0.645GlnMet: 0.645 ± 0.018
1.415GlnAsn: 1.415 ± 0.032
0.593GlnPro: 0.593 ± 0.022
0.831GlnGln: 0.831 ± 0.027
1.001GlnArg: 1.001 ± 0.026
1.554GlnSer: 1.554 ± 0.036
1.157GlnThr: 1.157 ± 0.029
1.691GlnVal: 1.691 ± 0.036
0.342GlnTrp: 0.342 ± 0.016
1.265GlnTyr: 1.265 ± 0.031
0.0GlnXaa: 0.0 ± 0.0
Arg
1.977ArgAla: 1.977 ± 0.037
0.375ArgCys: 0.375 ± 0.013
1.894ArgAsp: 1.894 ± 0.036
2.825ArgGlu: 2.825 ± 0.044
1.627ArgPhe: 1.627 ± 0.033
1.926ArgGly: 1.926 ± 0.037
0.493ArgHis: 0.493 ± 0.017
3.13ArgIle: 3.13 ± 0.053
3.066ArgLys: 3.066 ± 0.045
3.278ArgLeu: 3.278 ± 0.046
0.965ArgMet: 0.965 ± 0.025
2.081ArgAsn: 2.081 ± 0.037
0.862ArgPro: 0.862 ± 0.022
1.023ArgGln: 1.023 ± 0.027
1.549ArgArg: 1.549 ± 0.033
1.828ArgSer: 1.828 ± 0.041
1.644ArgThr: 1.644 ± 0.029
2.321ArgVal: 2.321 ± 0.038
0.311ArgTrp: 0.311 ± 0.016
1.702ArgTyr: 1.702 ± 0.034
0.0ArgXaa: 0.0 ± 0.0
Ser
3.549SerAla: 3.549 ± 0.05
0.665SerCys: 0.665 ± 0.022
3.591SerAsp: 3.591 ± 0.052
4.395SerGlu: 4.395 ± 0.055
3.435SerPhe: 3.435 ± 0.051
4.413SerGly: 4.413 ± 0.062
0.886SerHis: 0.886 ± 0.026
6.721SerIle: 6.721 ± 0.092
6.128SerLys: 6.128 ± 0.068
6.366SerLeu: 6.366 ± 0.06
1.784SerMet: 1.784 ± 0.032
4.141SerAsn: 4.141 ± 0.062
1.67SerPro: 1.67 ± 0.039
1.647SerGln: 1.647 ± 0.036
2.276SerArg: 2.276 ± 0.044
5.061SerSer: 5.061 ± 0.077
3.57SerThr: 3.57 ± 0.052
4.139SerVal: 4.139 ± 0.053
0.548SerTrp: 0.548 ± 0.023
2.977SerTyr: 2.977 ± 0.05
0.0SerXaa: 0.0 ± 0.0
Thr
3.22ThrAla: 3.22 ± 0.054
0.45ThrCys: 0.45 ± 0.016
2.666ThrAsp: 2.666 ± 0.044
3.082ThrGlu: 3.082 ± 0.049
2.262ThrPhe: 2.262 ± 0.033
3.586ThrGly: 3.586 ± 0.062
0.757ThrHis: 0.757 ± 0.022
4.751ThrIle: 4.751 ± 0.066
3.751ThrLys: 3.751 ± 0.053
4.894ThrLeu: 4.894 ± 0.06
1.112ThrMet: 1.112 ± 0.022
2.865ThrAsn: 2.865 ± 0.045
1.894ThrPro: 1.894 ± 0.037
1.149ThrGln: 1.149 ± 0.027
1.557ThrArg: 1.557 ± 0.032
3.559ThrSer: 3.559 ± 0.059
2.824ThrThr: 2.824 ± 0.054
3.61ThrVal: 3.61 ± 0.053
0.427ThrTrp: 0.427 ± 0.018
2.028ThrTyr: 2.028 ± 0.042
0.0ThrXaa: 0.0 ± 0.0
Val
4.173ValAla: 4.173 ± 0.058
0.741ValCys: 0.741 ± 0.023
3.964ValAsp: 3.964 ± 0.048
4.381ValGlu: 4.381 ± 0.063
3.041ValPhe: 3.041 ± 0.043
4.097ValGly: 4.097 ± 0.061
0.816ValHis: 0.816 ± 0.024
6.084ValIle: 6.084 ± 0.066
5.374ValLys: 5.374 ± 0.06
6.088ValLeu: 6.088 ± 0.064
1.631ValMet: 1.631 ± 0.033
3.703ValAsn: 3.703 ± 0.052
2.041ValPro: 2.041 ± 0.043
1.491ValGln: 1.491 ± 0.031
2.178ValArg: 2.178 ± 0.039
4.727ValSer: 4.727 ± 0.059
3.444ValThr: 3.444 ± 0.049
4.748ValVal: 4.748 ± 0.07
0.426ValTrp: 0.426 ± 0.017
2.567ValTyr: 2.567 ± 0.042
0.0ValXaa: 0.0 ± 0.0
Trp
0.459TrpAla: 0.459 ± 0.018
0.101TrpCys: 0.101 ± 0.009
0.462TrpAsp: 0.462 ± 0.019
0.446TrpGlu: 0.446 ± 0.019
0.356TrpPhe: 0.356 ± 0.015
0.566TrpGly: 0.566 ± 0.021
0.153TrpHis: 0.153 ± 0.01
0.668TrpIle: 0.668 ± 0.024
0.587TrpLys: 0.587 ± 0.023
0.716TrpLeu: 0.716 ± 0.021
0.212TrpMet: 0.212 ± 0.011
0.476TrpAsn: 0.476 ± 0.018
0.17TrpPro: 0.17 ± 0.011
0.324TrpGln: 0.324 ± 0.016
0.298TrpArg: 0.298 ± 0.015
0.501TrpSer: 0.501 ± 0.018
0.374TrpThr: 0.374 ± 0.016
0.485TrpVal: 0.485 ± 0.017
0.093TrpTrp: 0.093 ± 0.009
0.337TrpTyr: 0.337 ± 0.015
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.054TyrAla: 2.054 ± 0.042
0.575TyrCys: 0.575 ± 0.021
2.662TyrAsp: 2.662 ± 0.055
2.98TyrGlu: 2.98 ± 0.044
2.138TyrPhe: 2.138 ± 0.04
2.699TyrGly: 2.699 ± 0.046
0.593TyrHis: 0.593 ± 0.018
3.947TyrIle: 3.947 ± 0.053
3.755TyrLys: 3.755 ± 0.049
3.882TyrLeu: 3.882 ± 0.058
1.015TyrMet: 1.015 ± 0.025
2.787TyrAsn: 2.787 ± 0.048
1.231TyrPro: 1.231 ± 0.025
0.896TyrGln: 0.896 ± 0.026
1.539TyrArg: 1.539 ± 0.029
3.128TyrSer: 3.128 ± 0.046
2.134TyrThr: 2.134 ± 0.043
2.494TyrVal: 2.494 ± 0.041
0.365TyrTrp: 0.365 ± 0.019
2.09TyrTyr: 2.09 ± 0.046
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 5184 proteins (1615987 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