Amino acid dipepetide frequency for Clostridium sp. chh4-2

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
7.978AlaAla: 7.978 ± 0.1
1.211AlaCys: 1.211 ± 0.033
4.343AlaAsp: 4.343 ± 0.055
5.215AlaGlu: 5.215 ± 0.062
3.13AlaPhe: 3.13 ± 0.05
6.413AlaGly: 6.413 ± 0.078
1.093AlaHis: 1.093 ± 0.028
4.606AlaIle: 4.606 ± 0.064
4.456AlaLys: 4.456 ± 0.053
6.957AlaLeu: 6.957 ± 0.075
2.391AlaMet: 2.391 ± 0.046
2.379AlaAsn: 2.379 ± 0.041
2.162AlaPro: 2.162 ± 0.039
2.212AlaGln: 2.212 ± 0.04
2.742AlaArg: 2.742 ± 0.039
4.237AlaSer: 4.237 ± 0.059
2.887AlaThr: 2.887 ± 0.047
6.909AlaVal: 6.909 ± 0.075
0.667AlaTrp: 0.667 ± 0.02
2.758AlaTyr: 2.758 ± 0.04
0.0AlaXaa: 0.0 ± 0.0
Cys
1.045CysAla: 1.045 ± 0.027
0.321CysCys: 0.321 ± 0.016
0.832CysAsp: 0.832 ± 0.02
0.895CysGlu: 0.895 ± 0.025
0.695CysPhe: 0.695 ± 0.02
1.598CysGly: 1.598 ± 0.033
0.321CysHis: 0.321 ± 0.015
1.158CysIle: 1.158 ± 0.029
0.711CysLys: 0.711 ± 0.023
1.336CysLeu: 1.336 ± 0.028
0.512CysMet: 0.512 ± 0.017
0.529CysAsn: 0.529 ± 0.017
0.627CysPro: 0.627 ± 0.023
0.423CysGln: 0.423 ± 0.016
0.865CysArg: 0.865 ± 0.023
1.041CysSer: 1.041 ± 0.028
0.741CysThr: 0.741 ± 0.02
1.002CysVal: 1.002 ± 0.025
0.144CysTrp: 0.144 ± 0.009
0.653CysTyr: 0.653 ± 0.023
0.0CysXaa: 0.0 ± 0.0
Asp
3.671AspAla: 3.671 ± 0.055
0.804AspCys: 0.804 ± 0.021
2.827AspAsp: 2.827 ± 0.058
4.398AspGlu: 4.398 ± 0.06
2.466AspPhe: 2.466 ± 0.04
4.764AspGly: 4.764 ± 0.074
1.045AspHis: 1.045 ± 0.028
4.169AspIle: 4.169 ± 0.053
3.198AspLys: 3.198 ± 0.048
4.858AspLeu: 4.858 ± 0.051
1.884AspMet: 1.884 ± 0.034
2.201AspAsn: 2.201 ± 0.046
2.058AspPro: 2.058 ± 0.04
1.71AspGln: 1.71 ± 0.037
2.562AspArg: 2.562 ± 0.045
3.125AspSer: 3.125 ± 0.059
2.777AspThr: 2.777 ± 0.059
3.547AspVal: 3.547 ± 0.046
0.646AspTrp: 0.646 ± 0.02
2.805AspTyr: 2.805 ± 0.05
0.0AspXaa: 0.0 ± 0.0
Glu
5.543GluAla: 5.543 ± 0.056
0.855GluCys: 0.855 ± 0.025
4.216GluAsp: 4.216 ± 0.061
7.136GluGlu: 7.136 ± 0.079
2.77GluPhe: 2.77 ± 0.047
4.409GluGly: 4.409 ± 0.062
1.331GluHis: 1.331 ± 0.032
5.209GluIle: 5.209 ± 0.064
5.787GluLys: 5.787 ± 0.066
6.716GluLeu: 6.716 ± 0.067
2.328GluMet: 2.328 ± 0.037
3.785GluAsn: 3.785 ± 0.051
2.116GluPro: 2.116 ± 0.042
2.696GluGln: 2.696 ± 0.041
3.317GluArg: 3.317 ± 0.047
3.414GluSer: 3.414 ± 0.046
3.947GluThr: 3.947 ± 0.059
4.145GluVal: 4.145 ± 0.051
0.729GluTrp: 0.729 ± 0.02
3.142GluTyr: 3.142 ± 0.05
0.0GluXaa: 0.0 ± 0.0
Phe
2.966PheAla: 2.966 ± 0.044
0.797PheCys: 0.797 ± 0.023
2.529PheAsp: 2.529 ± 0.044
2.611PheGlu: 2.611 ± 0.047
1.909PhePhe: 1.909 ± 0.042
3.118PheGly: 3.118 ± 0.052
0.888PheHis: 0.888 ± 0.021
2.982PheIle: 2.982 ± 0.047
2.209PheLys: 2.209 ± 0.038
4.067PheLeu: 4.067 ± 0.056
1.327PheMet: 1.327 ± 0.033
1.653PheAsn: 1.653 ± 0.032
1.497PhePro: 1.497 ± 0.029
1.309PheGln: 1.309 ± 0.025
1.711PheArg: 1.711 ± 0.034
3.011PheSer: 3.011 ± 0.046
2.542PheThr: 2.542 ± 0.042
2.702PheVal: 2.702 ± 0.044
0.456PheTrp: 0.456 ± 0.019
1.871PheTyr: 1.871 ± 0.036
0.0PheXaa: 0.0 ± 0.0
Gly
5.175GlyAla: 5.175 ± 0.061
1.386GlyCys: 1.386 ± 0.034
3.546GlyAsp: 3.546 ± 0.054
4.786GlyGlu: 4.786 ± 0.067
3.198GlyPhe: 3.198 ± 0.045
5.317GlyGly: 5.317 ± 0.069
1.239GlyHis: 1.239 ± 0.033
6.744GlyIle: 6.744 ± 0.08
5.033GlyLys: 5.033 ± 0.055
6.314GlyLeu: 6.314 ± 0.075
2.71GlyMet: 2.71 ± 0.045
3.142GlyAsn: 3.142 ± 0.054
1.56GlyPro: 1.56 ± 0.033
2.186GlyGln: 2.186 ± 0.04
3.246GlyArg: 3.246 ± 0.052
4.503GlySer: 4.503 ± 0.064
4.277GlyThr: 4.277 ± 0.068
5.021GlyVal: 5.021 ± 0.051
0.847GlyTrp: 0.847 ± 0.025
3.367GlyTyr: 3.367 ± 0.049
0.0GlyXaa: 0.0 ± 0.0
His
1.062HisAla: 1.062 ± 0.025
0.287HisCys: 0.287 ± 0.013
0.911HisAsp: 0.911 ± 0.025
1.036HisGlu: 1.036 ± 0.024
0.835HisPhe: 0.835 ± 0.02
1.366HisGly: 1.366 ± 0.03
0.412HisHis: 0.412 ± 0.02
1.346HisIle: 1.346 ± 0.029
0.883HisLys: 0.883 ± 0.024
1.547HisLeu: 1.547 ± 0.03
0.618HisMet: 0.618 ± 0.019
0.739HisAsn: 0.739 ± 0.019
0.932HisPro: 0.932 ± 0.024
0.613HisGln: 0.613 ± 0.017
0.746HisArg: 0.746 ± 0.023
0.991HisSer: 0.991 ± 0.027
0.921HisThr: 0.921 ± 0.022
1.11HisVal: 1.11 ± 0.027
0.195HisTrp: 0.195 ± 0.01
0.788HisTyr: 0.788 ± 0.023
0.0HisXaa: 0.0 ± 0.0
Ile
5.382IleAla: 5.382 ± 0.072
1.403IleCys: 1.403 ± 0.032
3.836IleAsp: 3.836 ± 0.055
4.458IleGlu: 4.458 ± 0.049
3.035IlePhe: 3.035 ± 0.054
5.277IleGly: 5.277 ± 0.062
1.359IleHis: 1.359 ± 0.028
5.207IleIle: 5.207 ± 0.076
4.076IleLys: 4.076 ± 0.047
7.077IleLeu: 7.077 ± 0.088
2.109IleMet: 2.109 ± 0.038
2.932IleAsn: 2.932 ± 0.047
3.439IlePro: 3.439 ± 0.047
2.328IleGln: 2.328 ± 0.041
3.559IleArg: 3.559 ± 0.046
5.09IleSer: 5.09 ± 0.058
4.286IleThr: 4.286 ± 0.072
4.647IleVal: 4.647 ± 0.064
0.779IleTrp: 0.779 ± 0.023
2.836IleTyr: 2.836 ± 0.049
0.0IleXaa: 0.0 ± 0.0
Lys
4.769LysAla: 4.769 ± 0.054
0.621LysCys: 0.621 ± 0.022
3.749LysAsp: 3.749 ± 0.062
6.251LysGlu: 6.251 ± 0.067
1.727LysPhe: 1.727 ± 0.034
4.131LysGly: 4.131 ± 0.04
0.972LysHis: 0.972 ± 0.026
4.435LysIle: 4.435 ± 0.054
5.36LysLys: 5.36 ± 0.06
5.077LysLeu: 5.077 ± 0.054
2.109LysMet: 2.109 ± 0.034
3.383LysAsn: 3.383 ± 0.044
2.116LysPro: 2.116 ± 0.038
2.308LysGln: 2.308 ± 0.041
3.106LysArg: 3.106 ± 0.054
3.169LysSer: 3.169 ± 0.041
3.643LysThr: 3.643 ± 0.049
3.777LysVal: 3.777 ± 0.056
0.599LysTrp: 0.599 ± 0.02
2.529LysTyr: 2.529 ± 0.04
0.0LysXaa: 0.0 ± 0.0
Leu
6.879LeuAla: 6.879 ± 0.082
1.532LeuCys: 1.532 ± 0.029
5.136LeuAsp: 5.136 ± 0.057
6.406LeuGlu: 6.406 ± 0.083
4.152LeuPhe: 4.152 ± 0.063
6.154LeuGly: 6.154 ± 0.074
1.484LeuHis: 1.484 ± 0.031
6.323LeuIle: 6.323 ± 0.072
6.181LeuLys: 6.181 ± 0.072
8.611LeuLeu: 8.611 ± 0.097
2.937LeuMet: 2.937 ± 0.046
4.091LeuAsn: 4.091 ± 0.058
3.791LeuPro: 3.791 ± 0.05
2.596LeuGln: 2.596 ± 0.038
3.462LeuArg: 3.462 ± 0.042
6.409LeuSer: 6.409 ± 0.074
5.04LeuThr: 5.04 ± 0.06
5.585LeuVal: 5.585 ± 0.073
0.828LeuTrp: 0.828 ± 0.02
3.555LeuTyr: 3.555 ± 0.05
0.0LeuXaa: 0.0 ± 0.0
Met
2.678MetAla: 2.678 ± 0.038
0.373MetCys: 0.373 ± 0.017
2.008MetAsp: 2.008 ± 0.031
2.759MetGlu: 2.759 ± 0.046
1.107MetPhe: 1.107 ± 0.028
2.286MetGly: 2.286 ± 0.037
0.426MetHis: 0.426 ± 0.016
2.534MetIle: 2.534 ± 0.043
2.642MetLys: 2.642 ± 0.036
2.766MetLeu: 2.766 ± 0.043
1.164MetMet: 1.164 ± 0.03
1.614MetAsn: 1.614 ± 0.03
1.278MetPro: 1.278 ± 0.023
0.996MetGln: 0.996 ± 0.025
1.31MetArg: 1.31 ± 0.028
1.797MetSer: 1.797 ± 0.036
1.821MetThr: 1.821 ± 0.028
2.157MetVal: 2.157 ± 0.037
0.243MetTrp: 0.243 ± 0.012
0.884MetTyr: 0.884 ± 0.023
0.0MetXaa: 0.0 ± 0.0
Asn
3.034AsnAla: 3.034 ± 0.05
0.643AsnCys: 0.643 ± 0.019
2.075AsnAsp: 2.075 ± 0.042
2.677AsnGlu: 2.677 ± 0.041
1.607AsnPhe: 1.607 ± 0.035
3.468AsnGly: 3.468 ± 0.053
0.899AsnHis: 0.899 ± 0.024
3.061AsnIle: 3.061 ± 0.044
2.338AsnLys: 2.338 ± 0.047
3.865AsnLeu: 3.865 ± 0.05
1.402AsnMet: 1.402 ± 0.027
1.75AsnAsn: 1.75 ± 0.037
2.113AsnPro: 2.113 ± 0.04
1.618AsnGln: 1.618 ± 0.032
2.052AsnArg: 2.052 ± 0.04
2.494AsnSer: 2.494 ± 0.046
2.229AsnThr: 2.229 ± 0.038
2.729AsnVal: 2.729 ± 0.041
0.469AsnTrp: 0.469 ± 0.014
1.985AsnTyr: 1.985 ± 0.041
0.0AsnXaa: 0.0 ± 0.0
Pro
2.679ProAla: 2.679 ± 0.041
0.5ProCys: 0.5 ± 0.018
2.573ProAsp: 2.573 ± 0.043
3.501ProGlu: 3.501 ± 0.05
1.69ProPhe: 1.69 ± 0.03
2.746ProGly: 2.746 ± 0.042
0.664ProHis: 0.664 ± 0.02
2.151ProIle: 2.151 ± 0.036
1.916ProLys: 1.916 ± 0.031
3.112ProLeu: 3.112 ± 0.046
1.098ProMet: 1.098 ± 0.022
1.336ProAsn: 1.336 ± 0.03
0.952ProPro: 0.952 ± 0.025
1.113ProGln: 1.113 ± 0.027
1.023ProArg: 1.023 ± 0.032
2.095ProSer: 2.095 ± 0.04
1.49ProThr: 1.49 ± 0.033
3.375ProVal: 3.375 ± 0.044
0.403ProTrp: 0.403 ± 0.016
1.682ProTyr: 1.682 ± 0.033
0.0ProXaa: 0.0 ± 0.0
Gln
2.561GlnAla: 2.561 ± 0.043
0.383GlnCys: 0.383 ± 0.016
1.521GlnAsp: 1.521 ± 0.033
2.529GlnGlu: 2.529 ± 0.041
1.318GlnPhe: 1.318 ± 0.03
2.028GlnGly: 2.028 ± 0.043
0.423GlnHis: 0.423 ± 0.014
2.581GlnIle: 2.581 ± 0.038
2.449GlnLys: 2.449 ± 0.039
2.84GlnLeu: 2.84 ± 0.045
1.23GlnMet: 1.23 ± 0.029
1.598GlnAsn: 1.598 ± 0.031
1.042GlnPro: 1.042 ± 0.025
1.086GlnGln: 1.086 ± 0.028
1.247GlnArg: 1.247 ± 0.029
1.685GlnSer: 1.685 ± 0.033
1.692GlnThr: 1.692 ± 0.034
2.162GlnVal: 2.162 ± 0.042
0.358GlnTrp: 0.358 ± 0.015
1.392GlnTyr: 1.392 ± 0.032
0.0GlnXaa: 0.0 ± 0.0
Arg
2.586ArgAla: 2.586 ± 0.046
0.664ArgCys: 0.664 ± 0.023
2.242ArgAsp: 2.242 ± 0.038
3.522ArgGlu: 3.522 ± 0.048
1.938ArgPhe: 1.938 ± 0.034
2.401ArgGly: 2.401 ± 0.043
0.743ArgHis: 0.743 ± 0.021
3.581ArgIle: 3.581 ± 0.047
3.073ArgLys: 3.073 ± 0.046
4.071ArgLeu: 4.071 ± 0.058
1.663ArgMet: 1.663 ± 0.034
1.963ArgAsn: 1.963 ± 0.034
1.428ArgPro: 1.428 ± 0.034
1.593ArgGln: 1.593 ± 0.03
2.062ArgArg: 2.062 ± 0.042
2.244ArgSer: 2.244 ± 0.037
2.106ArgThr: 2.106 ± 0.041
2.552ArgVal: 2.552 ± 0.039
0.438ArgTrp: 0.438 ± 0.016
2.043ArgTyr: 2.043 ± 0.036
0.0ArgXaa: 0.0 ± 0.0
Ser
4.353SerAla: 4.353 ± 0.05
0.929SerCys: 0.929 ± 0.024
3.232SerAsp: 3.232 ± 0.05
3.796SerGlu: 3.796 ± 0.06
2.856SerPhe: 2.856 ± 0.045
5.366SerGly: 5.366 ± 0.059
1.088SerHis: 1.088 ± 0.03
4.182SerIle: 4.182 ± 0.051
3.276SerLys: 3.276 ± 0.045
5.517SerLeu: 5.517 ± 0.064
1.947SerMet: 1.947 ± 0.033
2.202SerAsn: 2.202 ± 0.045
2.057SerPro: 2.057 ± 0.037
2.022SerGln: 2.022 ± 0.038
2.764SerArg: 2.764 ± 0.045
3.942SerSer: 3.942 ± 0.059
2.739SerThr: 2.739 ± 0.043
4.335SerVal: 4.335 ± 0.055
0.667SerTrp: 0.667 ± 0.022
2.598SerTyr: 2.598 ± 0.047
0.0SerXaa: 0.0 ± 0.0
Thr
4.71ThrAla: 4.71 ± 0.062
0.645ThrCys: 0.645 ± 0.02
3.006ThrAsp: 3.006 ± 0.052
3.573ThrGlu: 3.573 ± 0.053
2.196ThrPhe: 2.196 ± 0.037
4.657ThrGly: 4.657 ± 0.063
0.814ThrHis: 0.814 ± 0.021
3.859ThrIle: 3.859 ± 0.062
2.752ThrLys: 2.752 ± 0.041
4.679ThrLeu: 4.679 ± 0.058
1.545ThrMet: 1.545 ± 0.032
1.889ThrAsn: 1.889 ± 0.038
2.269ThrPro: 2.269 ± 0.036
1.355ThrGln: 1.355 ± 0.029
1.838ThrArg: 1.838 ± 0.034
3.076ThrSer: 3.076 ± 0.051
2.694ThrThr: 2.694 ± 0.047
4.439ThrVal: 4.439 ± 0.071
0.513ThrTrp: 0.513 ± 0.017
2.06ThrTyr: 2.06 ± 0.044
0.0ThrXaa: 0.0 ± 0.0
Val
4.347ValAla: 4.347 ± 0.062
1.237ValCys: 1.237 ± 0.03
3.756ValAsp: 3.756 ± 0.05
4.3ValGlu: 4.3 ± 0.054
3.11ValPhe: 3.11 ± 0.051
4.256ValGly: 4.256 ± 0.057
1.063ValHis: 1.063 ± 0.023
5.421ValIle: 5.421 ± 0.063
4.456ValLys: 4.456 ± 0.056
6.674ValLeu: 6.674 ± 0.075
2.25ValMet: 2.25 ± 0.038
2.923ValAsn: 2.923 ± 0.045
2.771ValPro: 2.771 ± 0.042
1.889ValGln: 1.889 ± 0.029
2.811ValArg: 2.811 ± 0.041
4.555ValSer: 4.555 ± 0.054
4.052ValThr: 4.052 ± 0.074
4.669ValVal: 4.669 ± 0.063
0.697ValTrp: 0.697 ± 0.023
2.765ValTyr: 2.765 ± 0.036
0.0ValXaa: 0.0 ± 0.0
Trp
0.591TrpAla: 0.591 ± 0.018
0.167TrpCys: 0.167 ± 0.01
0.61TrpAsp: 0.61 ± 0.022
0.69TrpGlu: 0.69 ± 0.022
0.472TrpPhe: 0.472 ± 0.018
0.722TrpGly: 0.722 ± 0.02
0.18TrpHis: 0.18 ± 0.009
0.756TrpIle: 0.756 ± 0.023
0.799TrpLys: 0.799 ± 0.023
0.975TrpLeu: 0.975 ± 0.026
0.389TrpMet: 0.389 ± 0.017
0.605TrpAsn: 0.605 ± 0.019
0.276TrpPro: 0.276 ± 0.012
0.379TrpGln: 0.379 ± 0.017
0.394TrpArg: 0.394 ± 0.017
0.563TrpSer: 0.563 ± 0.019
0.472TrpThr: 0.472 ± 0.022
0.589TrpVal: 0.589 ± 0.02
0.146TrpTrp: 0.146 ± 0.01
0.473TrpTyr: 0.473 ± 0.022
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.737TyrAla: 2.737 ± 0.035
0.687TyrCys: 0.687 ± 0.018
2.565TyrAsp: 2.565 ± 0.05
3.051TyrGlu: 3.051 ± 0.043
1.946TyrPhe: 1.946 ± 0.037
3.119TyrGly: 3.119 ± 0.043
0.894TyrHis: 0.894 ± 0.025
2.81TyrIle: 2.81 ± 0.043
2.236TyrLys: 2.236 ± 0.037
4.092TyrLeu: 4.092 ± 0.054
1.231TyrMet: 1.231 ± 0.027
1.795TyrAsn: 1.795 ± 0.036
1.618TyrPro: 1.618 ± 0.032
1.69TyrGln: 1.69 ± 0.04
2.096TyrArg: 2.096 ± 0.036
2.428TyrSer: 2.428 ± 0.039
2.214TyrThr: 2.214 ± 0.041
2.553TyrVal: 2.553 ± 0.04
0.425TyrTrp: 0.425 ± 0.016
2.145TyrTyr: 2.145 ± 0.05
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 5111 proteins (1759323 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