Amino acid dipepetide frequency for Clostridium sp. USBA 49

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
4.337AlaAla: 4.337 ± 0.097
0.672AlaCys: 0.672 ± 0.029
2.576AlaAsp: 2.576 ± 0.062
3.518AlaGlu: 3.518 ± 0.085
2.603AlaPhe: 2.603 ± 0.061
3.954AlaGly: 3.954 ± 0.092
0.795AlaHis: 0.795 ± 0.033
5.686AlaIle: 5.686 ± 0.105
4.935AlaLys: 4.935 ± 0.087
5.886AlaLeu: 5.886 ± 0.109
1.579AlaMet: 1.579 ± 0.046
2.62AlaAsn: 2.62 ± 0.067
1.391AlaPro: 1.391 ± 0.045
1.594AlaGln: 1.594 ± 0.045
1.764AlaArg: 1.764 ± 0.05
3.27AlaSer: 3.27 ± 0.062
2.262AlaThr: 2.262 ± 0.061
4.228AlaVal: 4.228 ± 0.081
0.396AlaTrp: 0.396 ± 0.026
2.147AlaTyr: 2.147 ± 0.056
0.0AlaXaa: 0.0 ± 0.0
Cys
0.593CysAla: 0.593 ± 0.027
0.174CysCys: 0.174 ± 0.014
0.62CysAsp: 0.62 ± 0.028
0.732CysGlu: 0.732 ± 0.034
0.47CysPhe: 0.47 ± 0.028
0.992CysGly: 0.992 ± 0.04
0.19CysHis: 0.19 ± 0.014
1.092CysIle: 1.092 ± 0.039
0.971CysLys: 0.971 ± 0.034
0.778CysLeu: 0.778 ± 0.027
0.227CysMet: 0.227 ± 0.016
0.644CysAsn: 0.644 ± 0.03
0.425CysPro: 0.425 ± 0.028
0.212CysGln: 0.212 ± 0.015
0.357CysArg: 0.357 ± 0.021
0.721CysSer: 0.721 ± 0.033
0.539CysThr: 0.539 ± 0.028
0.541CysVal: 0.541 ± 0.026
0.066CysTrp: 0.066 ± 0.009
0.398CysTyr: 0.398 ± 0.022
0.0CysXaa: 0.0 ± 0.0
Asp
2.697AspAla: 2.697 ± 0.061
0.524AspCys: 0.524 ± 0.024
2.498AspAsp: 2.498 ± 0.057
4.428AspGlu: 4.428 ± 0.086
2.796AspPhe: 2.796 ± 0.065
3.205AspGly: 3.205 ± 0.066
0.46AspHis: 0.46 ± 0.024
6.803AspIle: 6.803 ± 0.104
5.752AspLys: 5.752 ± 0.104
4.6AspLeu: 4.6 ± 0.081
1.449AspMet: 1.449 ± 0.044
3.319AspAsn: 3.319 ± 0.071
1.39AspPro: 1.39 ± 0.044
0.67AspGln: 0.67 ± 0.036
1.652AspArg: 1.652 ± 0.044
2.85AspSer: 2.85 ± 0.06
2.436AspThr: 2.436 ± 0.053
3.284AspVal: 3.284 ± 0.063
0.421AspTrp: 0.421 ± 0.026
2.589AspTyr: 2.589 ± 0.063
0.0AspXaa: 0.0 ± 0.0
Glu
4.288GluAla: 4.288 ± 0.076
0.605GluCys: 0.605 ± 0.028
4.308GluAsp: 4.308 ± 0.09
6.797GluGlu: 6.797 ± 0.117
2.899GluPhe: 2.899 ± 0.063
4.153GluGly: 4.153 ± 0.079
0.897GluHis: 0.897 ± 0.034
7.907GluIle: 7.907 ± 0.107
7.924GluLys: 7.924 ± 0.122
6.56GluLeu: 6.56 ± 0.093
1.783GluMet: 1.783 ± 0.048
5.826GluAsn: 5.826 ± 0.091
1.48GluPro: 1.48 ± 0.047
1.709GluGln: 1.709 ± 0.048
2.503GluArg: 2.503 ± 0.069
3.353GluSer: 3.353 ± 0.072
3.104GluThr: 3.104 ± 0.061
4.35GluVal: 4.35 ± 0.083
0.442GluTrp: 0.442 ± 0.024
3.131GluTyr: 3.131 ± 0.074
0.0GluXaa: 0.0 ± 0.0
Phe
2.187PheAla: 2.187 ± 0.056
0.546PheCys: 0.546 ± 0.026
2.441PheAsp: 2.441 ± 0.06
2.846PheGlu: 2.846 ± 0.058
1.981PhePhe: 1.981 ± 0.061
2.833PheGly: 2.833 ± 0.061
0.527PheHis: 0.527 ± 0.025
5.176PheIle: 5.176 ± 0.101
4.292PheLys: 4.292 ± 0.085
3.985PheLeu: 3.985 ± 0.082
1.16PheMet: 1.16 ± 0.041
3.281PheAsn: 3.281 ± 0.069
1.264PhePro: 1.264 ± 0.041
0.934PheGln: 0.934 ± 0.037
1.23PheArg: 1.23 ± 0.038
3.05PheSer: 3.05 ± 0.059
2.235PheThr: 2.235 ± 0.053
2.471PheVal: 2.471 ± 0.064
0.35PheTrp: 0.35 ± 0.023
1.945PheTyr: 1.945 ± 0.053
0.0PheXaa: 0.0 ± 0.0
Gly
3.972GlyAla: 3.972 ± 0.097
0.8GlyCys: 0.8 ± 0.034
3.092GlyAsp: 3.092 ± 0.064
4.279GlyGlu: 4.279 ± 0.082
2.993GlyPhe: 2.993 ± 0.063
4.118GlyGly: 4.118 ± 0.097
0.966GlyHis: 0.966 ± 0.036
7.191GlyIle: 7.191 ± 0.105
5.656GlyLys: 5.656 ± 0.093
5.173GlyLeu: 5.173 ± 0.1
1.636GlyMet: 1.636 ± 0.056
3.212GlyAsn: 3.212 ± 0.074
1.307GlyPro: 1.307 ± 0.036
1.408GlyGln: 1.408 ± 0.047
2.275GlyArg: 2.275 ± 0.057
3.416GlySer: 3.416 ± 0.063
3.379GlyThr: 3.379 ± 0.075
4.207GlyVal: 4.207 ± 0.085
0.497GlyTrp: 0.497 ± 0.028
2.828GlyTyr: 2.828 ± 0.055
0.0GlyXaa: 0.0 ± 0.0
His
0.676HisAla: 0.676 ± 0.031
0.161HisCys: 0.161 ± 0.016
0.589HisAsp: 0.589 ± 0.027
0.844HisGlu: 0.844 ± 0.029
0.631HisPhe: 0.631 ± 0.03
0.908HisGly: 0.908 ± 0.038
0.315HisHis: 0.315 ± 0.022
1.412HisIle: 1.412 ± 0.041
1.084HisLys: 1.084 ± 0.04
1.098HisLeu: 1.098 ± 0.039
0.297HisMet: 0.297 ± 0.019
0.807HisAsn: 0.807 ± 0.034
0.628HisPro: 0.628 ± 0.031
0.313HisGln: 0.313 ± 0.021
0.497HisArg: 0.497 ± 0.024
0.778HisSer: 0.778 ± 0.034
0.644HisThr: 0.644 ± 0.031
0.702HisVal: 0.702 ± 0.029
0.107HisTrp: 0.107 ± 0.011
0.54HisTyr: 0.54 ± 0.029
0.0HisXaa: 0.0 ± 0.0
Ile
6.088IleAla: 6.088 ± 0.106
1.215IleCys: 1.215 ± 0.042
6.479IleAsp: 6.479 ± 0.103
7.835IleGlu: 7.835 ± 0.11
4.847IlePhe: 4.847 ± 0.101
6.12IleGly: 6.12 ± 0.105
1.257IleHis: 1.257 ± 0.042
11.155IleIle: 11.155 ± 0.182
10.601IleLys: 10.601 ± 0.139
9.759IleLeu: 9.759 ± 0.142
2.392IleMet: 2.392 ± 0.052
7.658IleAsn: 7.658 ± 0.107
3.616IlePro: 3.616 ± 0.064
2.26IleGln: 2.26 ± 0.054
2.998IleArg: 2.998 ± 0.071
6.935IleSer: 6.935 ± 0.107
5.168IleThr: 5.168 ± 0.098
6.076IleVal: 6.076 ± 0.1
0.633IleTrp: 0.633 ± 0.028
4.115IleTyr: 4.115 ± 0.072
0.0IleXaa: 0.0 ± 0.0
Lys
5.176LysAla: 5.176 ± 0.086
0.818LysCys: 0.818 ± 0.037
6.108LysAsp: 6.108 ± 0.103
9.532LysGlu: 9.532 ± 0.137
3.671LysPhe: 3.671 ± 0.072
5.388LysGly: 5.388 ± 0.085
1.151LysHis: 1.151 ± 0.04
9.806LysIle: 9.806 ± 0.121
9.057LysLys: 9.057 ± 0.123
8.132LysLeu: 8.132 ± 0.101
2.348LysMet: 2.348 ± 0.058
7.84LysAsn: 7.84 ± 0.121
2.317LysPro: 2.317 ± 0.055
2.119LysGln: 2.119 ± 0.059
3.068LysArg: 3.068 ± 0.057
5.159LysSer: 5.159 ± 0.078
4.263LysThr: 4.263 ± 0.078
5.641LysVal: 5.641 ± 0.078
0.677LysTrp: 0.677 ± 0.031
4.428LysTyr: 4.428 ± 0.085
0.0LysXaa: 0.0 ± 0.0
Leu
4.794LeuAla: 4.794 ± 0.079
0.996LeuCys: 0.996 ± 0.037
4.979LeuAsp: 4.979 ± 0.084
6.208LeuGlu: 6.208 ± 0.111
3.552LeuPhe: 3.552 ± 0.085
5.777LeuGly: 5.777 ± 0.094
1.124LeuHis: 1.124 ± 0.036
8.667LeuIle: 8.667 ± 0.134
9.667LeuLys: 9.667 ± 0.121
7.139LeuLeu: 7.139 ± 0.112
2.147LeuMet: 2.147 ± 0.05
6.514LeuAsn: 6.514 ± 0.102
2.902LeuPro: 2.902 ± 0.064
2.106LeuGln: 2.106 ± 0.056
2.763LeuArg: 2.763 ± 0.06
6.29LeuSer: 6.29 ± 0.1
4.301LeuThr: 4.301 ± 0.088
4.648LeuVal: 4.648 ± 0.084
0.64LeuTrp: 0.64 ± 0.028
3.394LeuTyr: 3.394 ± 0.078
0.0LeuXaa: 0.0 ± 0.0
Met
1.779MetAla: 1.779 ± 0.058
0.212MetCys: 0.212 ± 0.018
1.463MetAsp: 1.463 ± 0.043
1.753MetGlu: 1.753 ± 0.051
0.973MetPhe: 0.973 ± 0.038
1.625MetGly: 1.625 ± 0.051
0.354MetHis: 0.354 ± 0.021
2.255MetIle: 2.255 ± 0.059
2.401MetLys: 2.401 ± 0.057
2.155MetLeu: 2.155 ± 0.055
0.593MetMet: 0.593 ± 0.031
1.641MetAsn: 1.641 ± 0.05
0.939MetPro: 0.939 ± 0.038
0.728MetGln: 0.728 ± 0.034
0.785MetArg: 0.785 ± 0.03
1.582MetSer: 1.582 ± 0.042
1.163MetThr: 1.163 ± 0.037
1.406MetVal: 1.406 ± 0.049
0.162MetTrp: 0.162 ± 0.015
0.8MetTyr: 0.8 ± 0.032
0.0MetXaa: 0.0 ± 0.0
Asn
3.083AsnAla: 3.083 ± 0.062
0.746AsnCys: 0.746 ± 0.036
3.007AsnAsp: 3.007 ± 0.071
4.592AsnGlu: 4.592 ± 0.093
3.099AsnPhe: 3.099 ± 0.063
3.805AsnGly: 3.805 ± 0.081
0.755AsnHis: 0.755 ± 0.032
8.483AsnIle: 8.483 ± 0.127
6.97AsnLys: 6.97 ± 0.113
6.138AsnLeu: 6.138 ± 0.092
1.686AsnMet: 1.686 ± 0.042
5.081AsnAsn: 5.081 ± 0.092
2.304AsnPro: 2.304 ± 0.058
1.401AsnGln: 1.401 ± 0.044
1.867AsnArg: 1.867 ± 0.057
4.179AsnSer: 4.179 ± 0.085
3.227AsnThr: 3.227 ± 0.059
3.626AsnVal: 3.626 ± 0.074
0.504AsnTrp: 0.504 ± 0.026
3.09AsnTyr: 3.09 ± 0.068
0.0AsnXaa: 0.0 ± 0.0
Pro
1.466ProAla: 1.466 ± 0.045
0.304ProCys: 0.304 ± 0.02
1.513ProAsp: 1.513 ± 0.045
2.379ProGlu: 2.379 ± 0.062
1.501ProPhe: 1.501 ± 0.042
1.775ProGly: 1.775 ± 0.048
0.518ProHis: 0.518 ± 0.028
2.973ProIle: 2.973 ± 0.064
2.428ProLys: 2.428 ± 0.057
2.556ProLeu: 2.556 ± 0.063
0.71ProMet: 0.71 ± 0.03
1.742ProAsn: 1.742 ± 0.047
0.672ProPro: 0.672 ± 0.031
0.851ProGln: 0.851 ± 0.032
0.844ProArg: 0.844 ± 0.038
1.879ProSer: 1.879 ± 0.047
1.409ProThr: 1.409 ± 0.045
2.025ProVal: 2.025 ± 0.058
0.278ProTrp: 0.278 ± 0.02
1.43ProTyr: 1.43 ± 0.041
0.0ProXaa: 0.0 ± 0.0
Gln
1.406GlnAla: 1.406 ± 0.041
0.243GlnCys: 0.243 ± 0.018
1.075GlnAsp: 1.075 ± 0.038
1.535GlnGlu: 1.535 ± 0.05
1.005GlnPhe: 1.005 ± 0.037
1.4GlnGly: 1.4 ± 0.042
0.309GlnHis: 0.309 ± 0.019
2.354GlnIle: 2.354 ± 0.051
2.231GlnLys: 2.231 ± 0.055
1.876GlnLeu: 1.876 ± 0.057
0.659GlnMet: 0.659 ± 0.027
1.685GlnAsn: 1.685 ± 0.052
0.578GlnPro: 0.578 ± 0.028
0.611GlnGln: 0.611 ± 0.032
0.914GlnArg: 0.914 ± 0.036
1.277GlnSer: 1.277 ± 0.038
0.997GlnThr: 0.997 ± 0.04
1.362GlnVal: 1.362 ± 0.043
0.214GlnTrp: 0.214 ± 0.016
1.099GlnTyr: 1.099 ± 0.039
0.0GlnXaa: 0.0 ± 0.0
Arg
1.827ArgAla: 1.827 ± 0.059
0.377ArgCys: 0.377 ± 0.023
1.616ArgAsp: 1.616 ± 0.047
2.697ArgGlu: 2.697 ± 0.068
1.435ArgPhe: 1.435 ± 0.042
1.885ArgGly: 1.885 ± 0.053
0.456ArgHis: 0.456 ± 0.023
3.126ArgIle: 3.126 ± 0.065
2.96ArgLys: 2.96 ± 0.057
2.804ArgLeu: 2.804 ± 0.07
0.804ArgMet: 0.804 ± 0.031
1.97ArgAsn: 1.97 ± 0.051
0.952ArgPro: 0.952 ± 0.037
0.906ArgGln: 0.906 ± 0.034
1.305ArgArg: 1.305 ± 0.05
1.305ArgSer: 1.305 ± 0.049
1.501ArgThr: 1.501 ± 0.045
1.909ArgVal: 1.909 ± 0.051
0.28ArgTrp: 0.28 ± 0.024
1.369ArgTyr: 1.369 ± 0.049
0.0ArgXaa: 0.0 ± 0.0
Ser
2.962SerAla: 2.962 ± 0.066
0.611SerCys: 0.611 ± 0.03
2.837SerAsp: 2.837 ± 0.061
3.761SerGlu: 3.761 ± 0.07
3.068SerPhe: 3.068 ± 0.062
4.091SerGly: 4.091 ± 0.078
0.773SerHis: 0.773 ± 0.036
6.734SerIle: 6.734 ± 0.111
5.936SerLys: 5.936 ± 0.083
5.684SerLeu: 5.684 ± 0.088
1.602SerMet: 1.602 ± 0.049
3.885SerAsn: 3.885 ± 0.066
1.672SerPro: 1.672 ± 0.043
1.48SerGln: 1.48 ± 0.041
1.898SerArg: 1.898 ± 0.051
3.955SerSer: 3.955 ± 0.084
2.962SerThr: 2.962 ± 0.066
3.329SerVal: 3.329 ± 0.068
0.442SerTrp: 0.442 ± 0.027
2.46SerTyr: 2.46 ± 0.063
0.0SerXaa: 0.0 ± 0.0
Thr
3.108ThrAla: 3.108 ± 0.077
0.447ThrCys: 0.447 ± 0.026
2.346ThrAsp: 2.346 ± 0.061
2.778ThrGlu: 2.778 ± 0.06
2.205ThrPhe: 2.205 ± 0.056
3.601ThrGly: 3.601 ± 0.081
0.703ThrHis: 0.703 ± 0.03
4.933ThrIle: 4.933 ± 0.09
3.832ThrLys: 3.832 ± 0.072
4.663ThrLeu: 4.663 ± 0.085
1.064ThrMet: 1.064 ± 0.042
2.65ThrAsn: 2.65 ± 0.055
1.762ThrPro: 1.762 ± 0.042
1.111ThrGln: 1.111 ± 0.039
1.357ThrArg: 1.357 ± 0.043
3.026ThrSer: 3.026 ± 0.059
2.476ThrThr: 2.476 ± 0.052
3.161ThrVal: 3.161 ± 0.067
0.322ThrTrp: 0.322 ± 0.018
1.907ThrTyr: 1.907 ± 0.049
0.0ThrXaa: 0.0 ± 0.0
Val
3.328ValAla: 3.328 ± 0.075
0.694ValCys: 0.694 ± 0.033
3.379ValAsp: 3.379 ± 0.061
3.898ValGlu: 3.898 ± 0.077
2.59ValPhe: 2.59 ± 0.06
3.665ValGly: 3.665 ± 0.083
0.796ValHis: 0.796 ± 0.036
6.356ValIle: 6.356 ± 0.096
5.239ValLys: 5.239 ± 0.085
5.493ValLeu: 5.493 ± 0.08
1.475ValMet: 1.475 ± 0.044
3.59ValAsn: 3.59 ± 0.072
2.108ValPro: 2.108 ± 0.054
1.342ValGln: 1.342 ± 0.043
1.797ValArg: 1.797 ± 0.053
4.088ValSer: 4.088 ± 0.073
3.024ValThr: 3.024 ± 0.067
3.818ValVal: 3.818 ± 0.08
0.435ValTrp: 0.435 ± 0.027
2.33ValTyr: 2.33 ± 0.048
0.0ValXaa: 0.0 ± 0.0
Trp
0.392TrpAla: 0.392 ± 0.025
0.097TrpCys: 0.097 ± 0.013
0.479TrpAsp: 0.479 ± 0.025
0.508TrpGlu: 0.508 ± 0.028
0.351TrpPhe: 0.351 ± 0.021
0.495TrpGly: 0.495 ± 0.029
0.123TrpHis: 0.123 ± 0.012
0.641TrpIle: 0.641 ± 0.036
0.519TrpLys: 0.519 ± 0.027
0.602TrpLeu: 0.602 ± 0.027
0.211TrpMet: 0.211 ± 0.017
0.553TrpAsn: 0.553 ± 0.029
0.194TrpPro: 0.194 ± 0.019
0.273TrpGln: 0.273 ± 0.02
0.303TrpArg: 0.303 ± 0.019
0.421TrpSer: 0.421 ± 0.028
0.322TrpThr: 0.322 ± 0.023
0.409TrpVal: 0.409 ± 0.025
0.115TrpTrp: 0.115 ± 0.013
0.308TrpTyr: 0.308 ± 0.021
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.053TyrAla: 2.053 ± 0.045
0.499TyrCys: 0.499 ± 0.025
2.415TyrAsp: 2.415 ± 0.054
3.101TyrGlu: 3.101 ± 0.068
2.067TyrPhe: 2.067 ± 0.053
2.615TyrGly: 2.615 ± 0.054
0.559TyrHis: 0.559 ± 0.028
4.457TyrIle: 4.457 ± 0.086
4.244TyrLys: 4.244 ± 0.077
3.525TyrLeu: 3.525 ± 0.074
0.947TyrMet: 0.947 ± 0.037
3.127TyrAsn: 3.127 ± 0.065
1.355TyrPro: 1.355 ± 0.038
0.804TyrGln: 0.804 ± 0.029
1.304TyrArg: 1.304 ± 0.039
2.607TyrSer: 2.607 ± 0.06
2.043TyrThr: 2.043 ± 0.052
2.251TyrVal: 2.251 ± 0.053
0.337TyrTrp: 0.337 ± 0.022
1.873TyrTyr: 1.873 ± 0.056
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 2435 proteins (772217 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