Amino acid dipepetide frequency for Hydrogenophaga sp. PBC

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
17.79AlaAla: 17.79 ± 0.156
1.282AlaCys: 1.282 ± 0.03
6.754AlaAsp: 6.754 ± 0.079
6.874AlaGlu: 6.874 ± 0.082
4.207AlaPhe: 4.207 ± 0.056
10.806AlaGly: 10.806 ± 0.113
2.915AlaHis: 2.915 ± 0.05
5.223AlaIle: 5.223 ± 0.057
3.443AlaLys: 3.443 ± 0.065
16.252AlaLeu: 16.252 ± 0.133
3.609AlaMet: 3.609 ± 0.041
2.785AlaAsn: 2.785 ± 0.048
6.932AlaPro: 6.932 ± 0.102
5.951AlaGln: 5.951 ± 0.07
10.005AlaArg: 10.005 ± 0.096
6.695AlaSer: 6.695 ± 0.065
6.136AlaThr: 6.136 ± 0.07
9.328AlaVal: 9.328 ± 0.085
2.23AlaTrp: 2.23 ± 0.043
2.464AlaTyr: 2.464 ± 0.035
0.0AlaXaa: 0.0 ± 0.0
Cys
1.145CysAla: 1.145 ± 0.027
0.118CysCys: 0.118 ± 0.009
0.469CysAsp: 0.469 ± 0.015
0.525CysGlu: 0.525 ± 0.018
0.287CysPhe: 0.287 ± 0.015
0.932CysGly: 0.932 ± 0.027
0.252CysHis: 0.252 ± 0.014
0.343CysIle: 0.343 ± 0.017
0.202CysLys: 0.202 ± 0.013
0.839CysLeu: 0.839 ± 0.021
0.176CysMet: 0.176 ± 0.011
0.183CysAsn: 0.183 ± 0.011
0.471CysPro: 0.471 ± 0.017
0.246CysGln: 0.246 ± 0.012
0.603CysArg: 0.603 ± 0.019
0.422CysSer: 0.422 ± 0.017
0.45CysThr: 0.45 ± 0.018
0.68CysVal: 0.68 ± 0.023
0.116CysTrp: 0.116 ± 0.01
0.168CysTyr: 0.168 ± 0.01
0.0CysXaa: 0.0 ± 0.0
Asp
7.333AspAla: 7.333 ± 0.087
0.431AspCys: 0.431 ± 0.02
2.705AspAsp: 2.705 ± 0.047
3.523AspGlu: 3.523 ± 0.053
1.933AspPhe: 1.933 ± 0.035
4.856AspGly: 4.856 ± 0.069
1.201AspHis: 1.201 ± 0.025
2.234AspIle: 2.234 ± 0.045
1.592AspLys: 1.592 ± 0.044
5.396AspLeu: 5.396 ± 0.058
1.2AspMet: 1.2 ± 0.028
1.141AspAsn: 1.141 ± 0.027
3.218AspPro: 3.218 ± 0.042
1.643AspGln: 1.643 ± 0.037
3.432AspArg: 3.432 ± 0.05
2.171AspSer: 2.171 ± 0.038
2.733AspThr: 2.733 ± 0.04
3.955AspVal: 3.955 ± 0.058
1.064AspTrp: 1.064 ± 0.031
1.218AspTyr: 1.218 ± 0.033
0.0AspXaa: 0.0 ± 0.0
Glu
7.525GluAla: 7.525 ± 0.083
0.357GluCys: 0.357 ± 0.016
2.239GluAsp: 2.239 ± 0.04
2.261GluGlu: 2.261 ± 0.046
1.606GluPhe: 1.606 ± 0.038
4.024GluGly: 4.024 ± 0.055
1.508GluHis: 1.508 ± 0.033
2.28GluIle: 2.28 ± 0.045
1.639GluLys: 1.639 ± 0.036
6.194GluLeu: 6.194 ± 0.07
1.183GluMet: 1.183 ± 0.026
1.155GluAsn: 1.155 ± 0.031
2.892GluPro: 2.892 ± 0.053
2.628GluGln: 2.628 ± 0.046
5.458GluArg: 5.458 ± 0.071
2.348GluSer: 2.348 ± 0.041
2.358GluThr: 2.358 ± 0.047
4.106GluVal: 4.106 ± 0.061
0.727GluTrp: 0.727 ± 0.02
0.91GluTyr: 0.91 ± 0.026
0.0GluXaa: 0.0 ± 0.0
Phe
4.178PheAla: 4.178 ± 0.057
0.35PheCys: 0.35 ± 0.017
2.497PheAsp: 2.497 ± 0.042
2.066PheGlu: 2.066 ± 0.038
1.302PhePhe: 1.302 ± 0.032
3.232PheGly: 3.232 ± 0.051
0.787PheHis: 0.787 ± 0.022
1.372PheIle: 1.372 ± 0.034
1.101PheLys: 1.101 ± 0.029
2.965PheLeu: 2.965 ± 0.046
0.803PheMet: 0.803 ± 0.025
1.085PheAsn: 1.085 ± 0.027
1.424PhePro: 1.424 ± 0.031
1.048PheGln: 1.048 ± 0.027
1.808PheArg: 1.808 ± 0.035
1.933PheSer: 1.933 ± 0.036
1.946PheThr: 1.946 ± 0.038
2.768PheVal: 2.768 ± 0.052
0.495PheTrp: 0.495 ± 0.019
0.786PheTyr: 0.786 ± 0.026
0.0PheXaa: 0.0 ± 0.0
Gly
9.843GlyAla: 9.843 ± 0.101
0.776GlyCys: 0.776 ± 0.023
4.095GlyAsp: 4.095 ± 0.059
4.887GlyGlu: 4.887 ± 0.056
3.355GlyPhe: 3.355 ± 0.048
7.179GlyGly: 7.179 ± 0.094
2.144GlyHis: 2.144 ± 0.038
3.681GlyIle: 3.681 ± 0.061
2.755GlyLys: 2.755 ± 0.053
9.708GlyLeu: 9.708 ± 0.106
2.255GlyMet: 2.255 ± 0.041
1.96GlyAsn: 1.96 ± 0.046
3.425GlyPro: 3.425 ± 0.048
3.671GlyGln: 3.671 ± 0.052
5.771GlyArg: 5.771 ± 0.07
4.318GlySer: 4.318 ± 0.057
4.402GlyThr: 4.402 ± 0.061
6.983GlyVal: 6.983 ± 0.082
1.562GlyTrp: 1.562 ± 0.035
2.12GlyTyr: 2.12 ± 0.038
0.0GlyXaa: 0.0 ± 0.0
His
3.093HisAla: 3.093 ± 0.048
0.275HisCys: 0.275 ± 0.015
1.217HisAsp: 1.217 ± 0.028
1.299HisGlu: 1.299 ± 0.034
0.888HisPhe: 0.888 ± 0.026
2.325HisGly: 2.325 ± 0.043
0.729HisHis: 0.729 ± 0.023
0.914HisIle: 0.914 ± 0.026
0.59HisLys: 0.59 ± 0.02
2.546HisLeu: 2.546 ± 0.039
0.509HisMet: 0.509 ± 0.02
0.51HisAsn: 0.51 ± 0.02
1.566HisPro: 1.566 ± 0.034
0.832HisGln: 0.832 ± 0.023
1.694HisArg: 1.694 ± 0.035
0.995HisSer: 0.995 ± 0.024
1.181HisThr: 1.181 ± 0.028
1.65HisVal: 1.65 ± 0.033
0.503HisTrp: 0.503 ± 0.019
0.553HisTyr: 0.553 ± 0.017
0.0HisXaa: 0.0 ± 0.0
Ile
5.872IleAla: 5.872 ± 0.065
0.366IleCys: 0.366 ± 0.016
3.14IleAsp: 3.14 ± 0.042
3.065IleGlu: 3.065 ± 0.048
1.07IlePhe: 1.07 ± 0.03
4.003IleGly: 4.003 ± 0.066
0.806IleHis: 0.806 ± 0.024
1.169IleIle: 1.169 ± 0.033
1.278IleLys: 1.278 ± 0.029
2.791IleLeu: 2.791 ± 0.053
0.615IleMet: 0.615 ± 0.02
1.294IleAsn: 1.294 ± 0.032
1.855IlePro: 1.855 ± 0.036
1.174IleGln: 1.174 ± 0.027
2.483IleArg: 2.483 ± 0.045
1.896IleSer: 1.896 ± 0.034
2.415IleThr: 2.415 ± 0.042
3.371IleVal: 3.371 ± 0.055
0.449IleTrp: 0.449 ± 0.018
0.825IleTyr: 0.825 ± 0.021
0.0IleXaa: 0.0 ± 0.0
Lys
4.049LysAla: 4.049 ± 0.075
0.15LysCys: 0.15 ± 0.01
1.53LysAsp: 1.53 ± 0.038
1.31LysGlu: 1.31 ± 0.032
0.749LysPhe: 0.749 ± 0.025
2.362LysGly: 2.362 ± 0.038
0.615LysHis: 0.615 ± 0.021
1.111LysIle: 1.111 ± 0.032
1.155LysLys: 1.155 ± 0.038
3.06LysLeu: 3.06 ± 0.057
0.627LysMet: 0.627 ± 0.023
0.791LysAsn: 0.791 ± 0.026
1.881LysPro: 1.881 ± 0.041
1.055LysGln: 1.055 ± 0.032
2.111LysArg: 2.111 ± 0.039
1.411LysSer: 1.411 ± 0.032
1.686LysThr: 1.686 ± 0.041
2.189LysVal: 2.189 ± 0.042
0.308LysTrp: 0.308 ± 0.015
0.54LysTyr: 0.54 ± 0.022
0.0LysXaa: 0.0 ± 0.0
Leu
15.432LeuAla: 15.432 ± 0.125
1.025LeuCys: 1.025 ± 0.028
6.283LeuAsp: 6.283 ± 0.074
4.94LeuGlu: 4.94 ± 0.051
3.462LeuPhe: 3.462 ± 0.053
9.247LeuGly: 9.247 ± 0.092
2.495LeuHis: 2.495 ± 0.04
4.421LeuIle: 4.421 ± 0.058
3.474LeuLys: 3.474 ± 0.064
11.72LeuLeu: 11.72 ± 0.131
2.665LeuMet: 2.665 ± 0.049
2.766LeuAsn: 2.766 ± 0.045
6.499LeuPro: 6.499 ± 0.068
4.342LeuGln: 4.342 ± 0.061
8.666LeuArg: 8.666 ± 0.092
6.328LeuSer: 6.328 ± 0.07
5.265LeuThr: 5.265 ± 0.06
8.068LeuVal: 8.068 ± 0.086
1.495LeuTrp: 1.495 ± 0.036
1.908LeuTyr: 1.908 ± 0.036
0.0LeuXaa: 0.0 ± 0.0
Met
3.212MetAla: 3.212 ± 0.044
0.166MetCys: 0.166 ± 0.012
1.19MetAsp: 1.19 ± 0.025
1.006MetGlu: 1.006 ± 0.026
0.682MetPhe: 0.682 ± 0.024
2.02MetGly: 2.02 ± 0.041
0.518MetHis: 0.518 ± 0.018
0.808MetIle: 0.808 ± 0.024
1.003MetLys: 1.003 ± 0.021
2.436MetLeu: 2.436 ± 0.043
0.497MetMet: 0.497 ± 0.019
0.894MetAsn: 0.894 ± 0.025
1.477MetPro: 1.477 ± 0.031
0.979MetGln: 0.979 ± 0.027
1.712MetArg: 1.712 ± 0.036
1.548MetSer: 1.548 ± 0.031
1.38MetThr: 1.38 ± 0.028
1.715MetVal: 1.715 ± 0.036
0.201MetTrp: 0.201 ± 0.012
0.338MetTyr: 0.338 ± 0.015
0.0MetXaa: 0.0 ± 0.0
Asn
3.248AsnAla: 3.248 ± 0.053
0.218AsnCys: 0.218 ± 0.01
1.277AsnAsp: 1.277 ± 0.026
1.247AsnGlu: 1.247 ± 0.033
0.813AsnPhe: 0.813 ± 0.025
2.177AsnGly: 2.177 ± 0.043
0.531AsnHis: 0.531 ± 0.019
1.043AsnIle: 1.043 ± 0.031
0.657AsnLys: 0.657 ± 0.021
2.52AsnLeu: 2.52 ± 0.038
0.51AsnMet: 0.51 ± 0.019
0.669AsnAsn: 0.669 ± 0.025
1.818AsnPro: 1.818 ± 0.036
0.881AsnGln: 0.881 ± 0.029
1.61AsnArg: 1.61 ± 0.03
1.004AsnSer: 1.004 ± 0.029
1.387AsnThr: 1.387 ± 0.037
1.78AsnVal: 1.78 ± 0.038
0.406AsnTrp: 0.406 ± 0.016
0.546AsnTyr: 0.546 ± 0.019
0.0AsnXaa: 0.0 ± 0.0
Pro
7.524ProAla: 7.524 ± 0.106
0.353ProCys: 0.353 ± 0.014
3.335ProAsp: 3.335 ± 0.041
3.46ProGlu: 3.46 ± 0.049
1.827ProPhe: 1.827 ± 0.037
4.952ProGly: 4.952 ± 0.071
1.235ProHis: 1.235 ± 0.031
1.862ProIle: 1.862 ± 0.035
1.339ProLys: 1.339 ± 0.028
5.723ProLeu: 5.723 ± 0.07
1.356ProMet: 1.356 ± 0.029
1.281ProAsn: 1.281 ± 0.032
3.079ProPro: 3.079 ± 0.062
2.092ProGln: 2.092 ± 0.039
3.588ProArg: 3.588 ± 0.054
2.802ProSer: 2.802 ± 0.044
2.826ProThr: 2.826 ± 0.042
4.474ProVal: 4.474 ± 0.056
0.911ProTrp: 0.911 ± 0.027
1.073ProTyr: 1.073 ± 0.032
0.0ProXaa: 0.0 ± 0.0
Gln
6.205GlnAla: 6.205 ± 0.079
0.28GlnCys: 0.28 ± 0.013
1.598GlnAsp: 1.598 ± 0.035
1.478GlnGlu: 1.478 ± 0.038
1.089GlnPhe: 1.089 ± 0.026
3.366GlnGly: 3.366 ± 0.05
1.001GlnHis: 1.001 ± 0.025
1.634GlnIle: 1.634 ± 0.031
1.004GlnLys: 1.004 ± 0.03
4.073GlnLeu: 4.073 ± 0.054
0.971GlnMet: 0.971 ± 0.024
0.796GlnAsn: 0.796 ± 0.026
2.224GlnPro: 2.224 ± 0.043
1.848GlnGln: 1.848 ± 0.041
4.138GlnArg: 4.138 ± 0.053
1.857GlnSer: 1.857 ± 0.04
1.896GlnThr: 1.896 ± 0.038
2.932GlnVal: 2.932 ± 0.045
0.706GlnTrp: 0.706 ± 0.021
0.722GlnTyr: 0.722 ± 0.019
0.0GlnXaa: 0.0 ± 0.0
Arg
8.958ArgAla: 8.958 ± 0.091
0.63ArgCys: 0.63 ± 0.02
3.835ArgAsp: 3.835 ± 0.052
4.939ArgGlu: 4.939 ± 0.064
2.98ArgPhe: 2.98 ± 0.052
5.249ArgGly: 5.249 ± 0.064
2.193ArgHis: 2.193 ± 0.042
3.251ArgIle: 3.251 ± 0.05
1.792ArgLys: 1.792 ± 0.039
9.0ArgLeu: 9.0 ± 0.082
1.777ArgMet: 1.777 ± 0.035
1.595ArgAsn: 1.595 ± 0.032
3.47ArgPro: 3.47 ± 0.048
3.286ArgGln: 3.286 ± 0.051
5.766ArgArg: 5.766 ± 0.078
3.412ArgSer: 3.412 ± 0.044
3.407ArgThr: 3.407 ± 0.046
5.804ArgVal: 5.804 ± 0.049
1.471ArgTrp: 1.471 ± 0.035
1.72ArgTyr: 1.72 ± 0.036
0.0ArgXaa: 0.0 ± 0.0
Ser
6.366SerAla: 6.366 ± 0.073
0.365SerCys: 0.365 ± 0.015
2.522SerAsp: 2.522 ± 0.038
2.401SerGlu: 2.401 ± 0.044
1.909SerPhe: 1.909 ± 0.033
4.944SerGly: 4.944 ± 0.056
1.153SerHis: 1.153 ± 0.031
1.967SerIle: 1.967 ± 0.039
1.266SerLys: 1.266 ± 0.035
5.688SerLeu: 5.688 ± 0.072
1.222SerMet: 1.222 ± 0.032
1.244SerAsn: 1.244 ± 0.028
2.946SerPro: 2.946 ± 0.047
1.742SerGln: 1.742 ± 0.035
3.465SerArg: 3.465 ± 0.047
2.655SerSer: 2.655 ± 0.051
2.702SerThr: 2.702 ± 0.043
3.788SerVal: 3.788 ± 0.047
0.717SerTrp: 0.717 ± 0.022
1.066SerTyr: 1.066 ± 0.031
0.0SerXaa: 0.0 ± 0.0
Thr
5.953ThrAla: 5.953 ± 0.067
0.358ThrCys: 0.358 ± 0.018
2.448ThrAsp: 2.448 ± 0.042
2.446ThrGlu: 2.446 ± 0.04
1.548ThrPhe: 1.548 ± 0.033
4.623ThrGly: 4.623 ± 0.061
1.222ThrHis: 1.222 ± 0.026
1.966ThrIle: 1.966 ± 0.031
1.117ThrLys: 1.117 ± 0.032
6.372ThrLeu: 6.372 ± 0.069
1.046ThrMet: 1.046 ± 0.027
1.121ThrAsn: 1.121 ± 0.029
3.858ThrPro: 3.858 ± 0.052
1.932ThrGln: 1.932 ± 0.035
3.437ThrArg: 3.437 ± 0.054
2.41ThrSer: 2.41 ± 0.043
2.843ThrThr: 2.843 ± 0.051
4.259ThrVal: 4.259 ± 0.058
0.727ThrTrp: 0.727 ± 0.021
0.932ThrTyr: 0.932 ± 0.025
0.0ThrXaa: 0.0 ± 0.0
Val
9.784ValAla: 9.784 ± 0.091
0.739ValCys: 0.739 ± 0.021
4.104ValAsp: 4.104 ± 0.055
4.03ValGlu: 4.03 ± 0.05
2.886ValPhe: 2.886 ± 0.045
5.665ValGly: 5.665 ± 0.066
1.723ValHis: 1.723 ± 0.034
3.34ValIle: 3.34 ± 0.05
2.342ValLys: 2.342 ± 0.042
8.597ValLeu: 8.597 ± 0.086
1.966ValMet: 1.966 ± 0.043
2.175ValAsn: 2.175 ± 0.041
4.115ValPro: 4.115 ± 0.058
2.951ValGln: 2.951 ± 0.046
5.64ValArg: 5.64 ± 0.069
4.099ValSer: 4.099 ± 0.058
3.733ValThr: 3.733 ± 0.047
6.556ValVal: 6.556 ± 0.079
1.132ValTrp: 1.132 ± 0.029
1.529ValTyr: 1.529 ± 0.034
0.0ValXaa: 0.0 ± 0.0
Trp
1.71TrpAla: 1.71 ± 0.041
0.191TrpCys: 0.191 ± 0.011
0.664TrpAsp: 0.664 ± 0.023
0.552TrpGlu: 0.552 ± 0.019
0.566TrpPhe: 0.566 ± 0.019
1.05TrpGly: 1.05 ± 0.026
0.392TrpHis: 0.392 ± 0.014
0.657TrpIle: 0.657 ± 0.022
0.406TrpLys: 0.406 ± 0.017
2.314TrpLeu: 2.314 ± 0.046
0.42TrpMet: 0.42 ± 0.016
0.401TrpAsn: 0.401 ± 0.017
0.908TrpPro: 0.908 ± 0.028
0.745TrpGln: 0.745 ± 0.024
1.534TrpArg: 1.534 ± 0.035
0.824TrpSer: 0.824 ± 0.022
0.768TrpThr: 0.768 ± 0.024
1.171TrpVal: 1.171 ± 0.033
0.343TrpTrp: 0.343 ± 0.016
0.281TrpTyr: 0.281 ± 0.014
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.459TyrAla: 2.459 ± 0.041
0.199TyrCys: 0.199 ± 0.012
1.078TyrAsp: 1.078 ± 0.025
1.09TyrGlu: 1.09 ± 0.027
0.787TyrPhe: 0.787 ± 0.022
1.878TyrGly: 1.878 ± 0.038
0.449TyrHis: 0.449 ± 0.018
0.663TyrIle: 0.663 ± 0.022
0.534TyrLys: 0.534 ± 0.023
2.306TyrLeu: 2.306 ± 0.039
0.374TyrMet: 0.374 ± 0.017
0.5TyrAsn: 0.5 ± 0.018
1.033TyrPro: 1.033 ± 0.025
0.771TyrGln: 0.771 ± 0.024
1.613TyrArg: 1.613 ± 0.034
1.0TyrSer: 1.0 ± 0.032
1.1TyrThr: 1.1 ± 0.028
1.53TyrVal: 1.53 ± 0.034
0.334TyrTrp: 0.334 ± 0.013
0.467TyrTyr: 0.467 ± 0.016
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 4855 proteins (1570076 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