Amino acid dipepetide frequency for Halarcobacter bivalviorum

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
3.612AlaAla: 3.612 ± 0.104
0.641AlaCys: 0.641 ± 0.029
2.709AlaAsp: 2.709 ± 0.118
2.639AlaGlu: 2.639 ± 0.068
2.949AlaPhe: 2.949 ± 0.07
3.613AlaGly: 3.613 ± 0.147
1.03AlaHis: 1.03 ± 0.034
5.951AlaIle: 5.951 ± 0.093
5.741AlaLys: 5.741 ± 0.123
6.515AlaLeu: 6.515 ± 0.112
1.589AlaMet: 1.589 ± 0.049
3.43AlaAsn: 3.43 ± 0.084
1.37AlaPro: 1.37 ± 0.048
1.91AlaGln: 1.91 ± 0.05
1.815AlaArg: 1.815 ± 0.056
4.017AlaSer: 4.017 ± 0.083
3.201AlaThr: 3.201 ± 0.072
3.646AlaVal: 3.646 ± 0.091
0.409AlaTrp: 0.409 ± 0.026
2.305AlaTyr: 2.305 ± 0.055
0.0AlaXaa: 0.0 ± 0.0
Cys
0.567CysAla: 0.567 ± 0.03
0.102CysCys: 0.102 ± 0.011
0.618CysAsp: 0.618 ± 0.032
0.735CysGlu: 0.735 ± 0.03
0.396CysPhe: 0.396 ± 0.022
0.647CysGly: 0.647 ± 0.034
0.227CysHis: 0.227 ± 0.018
0.647CysIle: 0.647 ± 0.029
0.741CysLys: 0.741 ± 0.03
0.591CysLeu: 0.591 ± 0.029
0.176CysMet: 0.176 ± 0.016
0.48CysAsn: 0.48 ± 0.027
0.356CysPro: 0.356 ± 0.023
0.223CysGln: 0.223 ± 0.017
0.221CysArg: 0.221 ± 0.017
0.683CysSer: 0.683 ± 0.035
0.409CysThr: 0.409 ± 0.023
0.461CysVal: 0.461 ± 0.026
0.048CysTrp: 0.048 ± 0.008
0.284CysTyr: 0.284 ± 0.018
0.0CysXaa: 0.0 ± 0.0
Asp
2.954AspAla: 2.954 ± 0.074
0.461AspCys: 0.461 ± 0.025
2.961AspAsp: 2.961 ± 0.182
5.131AspGlu: 5.131 ± 0.091
3.419AspPhe: 3.419 ± 0.063
3.068AspGly: 3.068 ± 0.186
0.58AspHis: 0.58 ± 0.027
6.093AspIle: 6.093 ± 0.127
5.348AspLys: 5.348 ± 0.078
5.302AspLeu: 5.302 ± 0.091
1.277AspMet: 1.277 ± 0.044
3.14AspAsn: 3.14 ± 0.094
1.179AspPro: 1.179 ± 0.042
0.803AspGln: 0.803 ± 0.036
1.546AspArg: 1.546 ± 0.045
3.646AspSer: 3.646 ± 0.141
3.783AspThr: 3.783 ± 0.842
3.16AspVal: 3.16 ± 0.074
0.35AspTrp: 0.35 ± 0.019
2.623AspTyr: 2.623 ± 0.099
0.0AspXaa: 0.0 ± 0.0
Glu
4.623GluAla: 4.623 ± 0.086
0.511GluCys: 0.511 ± 0.028
4.426GluAsp: 4.426 ± 0.076
7.137GluGlu: 7.137 ± 0.153
3.875GluPhe: 3.875 ± 0.083
3.14GluGly: 3.14 ± 0.076
1.23GluHis: 1.23 ± 0.039
7.067GluIle: 7.067 ± 0.115
8.423GluLys: 8.423 ± 0.163
7.802GluLeu: 7.802 ± 0.155
1.56GluMet: 1.56 ± 0.051
5.673GluAsn: 5.673 ± 0.115
1.458GluPro: 1.458 ± 0.041
2.434GluGln: 2.434 ± 0.061
1.897GluArg: 1.897 ± 0.051
3.395GluSer: 3.395 ± 0.069
3.272GluThr: 3.272 ± 0.071
4.881GluVal: 4.881 ± 0.086
0.417GluTrp: 0.417 ± 0.026
3.267GluTyr: 3.267 ± 0.069
0.0GluXaa: 0.0 ± 0.0
Phe
3.069PheAla: 3.069 ± 0.07
0.524PheCys: 0.524 ± 0.027
3.407PheAsp: 3.407 ± 0.068
4.021PheGlu: 4.021 ± 0.086
3.078PhePhe: 3.078 ± 0.082
2.934PheGly: 2.934 ± 0.063
0.738PheHis: 0.738 ± 0.033
5.221PheIle: 5.221 ± 0.106
4.248PheLys: 4.248 ± 0.081
5.254PheLeu: 5.254 ± 0.118
1.196PheMet: 1.196 ± 0.04
3.024PheAsn: 3.024 ± 0.068
1.223PhePro: 1.223 ± 0.045
1.145PheGln: 1.145 ± 0.041
1.392PheArg: 1.392 ± 0.044
3.761PheSer: 3.761 ± 0.072
2.751PheThr: 2.751 ± 0.061
3.018PheVal: 3.018 ± 0.072
0.447PheTrp: 0.447 ± 0.026
2.223PheTyr: 2.223 ± 0.063
0.0PheXaa: 0.0 ± 0.0
Gly
3.567GlyAla: 3.567 ± 0.155
0.604GlyCys: 0.604 ± 0.035
2.616GlyAsp: 2.616 ± 0.253
3.361GlyGlu: 3.361 ± 0.076
3.269GlyPhe: 3.269 ± 0.065
3.613GlyGly: 3.613 ± 0.26
0.996GlyHis: 0.996 ± 0.038
4.933GlyIle: 4.933 ± 0.084
4.473GlyLys: 4.473 ± 0.077
5.013GlyLeu: 5.013 ± 0.088
1.4GlyMet: 1.4 ± 0.046
2.593GlyAsn: 2.593 ± 0.259
0.918GlyPro: 0.918 ± 0.039
1.405GlyGln: 1.405 ± 0.044
1.663GlyArg: 1.663 ± 0.051
3.255GlySer: 3.255 ± 0.172
2.956GlyThr: 2.956 ± 0.152
3.742GlyVal: 3.742 ± 0.087
0.434GlyTrp: 0.434 ± 0.022
2.302GlyTyr: 2.302 ± 0.057
0.0GlyXaa: 0.0 ± 0.0
His
0.751HisAla: 0.751 ± 0.031
0.159HisCys: 0.159 ± 0.014
0.741HisAsp: 0.741 ± 0.033
1.069HisGlu: 1.069 ± 0.041
0.923HisPhe: 0.923 ± 0.037
0.985HisGly: 0.985 ± 0.038
0.352HisHis: 0.352 ± 0.02
1.43HisIle: 1.43 ± 0.039
1.33HisLys: 1.33 ± 0.04
1.552HisLeu: 1.552 ± 0.042
0.36HisMet: 0.36 ± 0.02
0.898HisAsn: 0.898 ± 0.037
0.711HisPro: 0.711 ± 0.032
0.547HisGln: 0.547 ± 0.03
0.544HisArg: 0.544 ± 0.026
0.977HisSer: 0.977 ± 0.038
0.87HisThr: 0.87 ± 0.036
0.647HisVal: 0.647 ± 0.029
0.115HisTrp: 0.115 ± 0.012
0.647HisTyr: 0.647 ± 0.028
0.0HisXaa: 0.0 ± 0.0
Ile
5.961IleAla: 5.961 ± 0.105
0.814IleCys: 0.814 ± 0.033
6.034IleAsp: 6.034 ± 0.119
7.537IleGlu: 7.537 ± 0.108
4.789IlePhe: 4.789 ± 0.104
4.988IleGly: 4.988 ± 0.108
1.274IleHis: 1.274 ± 0.042
8.093IleIle: 8.093 ± 0.121
9.13IleLys: 9.13 ± 0.158
9.003IleLeu: 9.003 ± 0.116
1.668IleMet: 1.668 ± 0.049
5.803IleAsn: 5.803 ± 0.087
2.768IlePro: 2.768 ± 0.065
2.185IleGln: 2.185 ± 0.057
2.385IleArg: 2.385 ± 0.054
6.946IleSer: 6.946 ± 0.099
4.741IleThr: 4.741 ± 0.103
5.42IleVal: 5.42 ± 0.104
0.488IleTrp: 0.488 ± 0.026
3.481IleTyr: 3.481 ± 0.065
0.0IleXaa: 0.0 ± 0.0
Lys
5.455LysAla: 5.455 ± 0.098
0.538LysCys: 0.538 ± 0.026
6.197LysAsp: 6.197 ± 0.107
10.381LysGlu: 10.381 ± 0.179
3.53LysPhe: 3.53 ± 0.076
3.976LysGly: 3.976 ± 0.08
1.411LysHis: 1.411 ± 0.039
8.625LysIle: 8.625 ± 0.151
9.782LysLys: 9.782 ± 0.198
8.269LysLeu: 8.269 ± 0.136
2.202LysMet: 2.202 ± 0.049
6.721LysAsn: 6.721 ± 0.118
2.397LysPro: 2.397 ± 0.066
2.92LysGln: 2.92 ± 0.076
3.207LysArg: 3.207 ± 0.078
5.258LysSer: 5.258 ± 0.112
4.747LysThr: 4.747 ± 0.097
5.576LysVal: 5.576 ± 0.089
0.55LysTrp: 0.55 ± 0.026
4.133LysTyr: 4.133 ± 0.091
0.0LysXaa: 0.0 ± 0.0
Leu
6.028LeuAla: 6.028 ± 0.112
0.809LeuCys: 0.809 ± 0.033
5.645LeuAsp: 5.645 ± 0.104
8.007LeuGlu: 8.007 ± 0.136
5.252LeuPhe: 5.252 ± 0.106
5.35LeuGly: 5.35 ± 0.081
1.399LeuHis: 1.399 ± 0.044
8.473LeuIle: 8.473 ± 0.109
9.579LeuLys: 9.579 ± 0.153
9.308LeuLeu: 9.308 ± 0.153
2.045LeuMet: 2.045 ± 0.058
6.378LeuAsn: 6.378 ± 0.084
2.961LeuPro: 2.961 ± 0.069
2.724LeuGln: 2.724 ± 0.059
2.693LeuArg: 2.693 ± 0.067
7.099LeuSer: 7.099 ± 0.108
4.941LeuThr: 4.941 ± 0.089
5.578LeuVal: 5.578 ± 0.094
0.585LeuTrp: 0.585 ± 0.029
3.505LeuTyr: 3.505 ± 0.061
0.0LeuXaa: 0.0 ± 0.0
Met
1.47MetAla: 1.47 ± 0.048
0.177MetCys: 0.177 ± 0.017
1.096MetAsp: 1.096 ± 0.038
1.268MetGlu: 1.268 ± 0.042
1.122MetPhe: 1.122 ± 0.037
1.318MetGly: 1.318 ± 0.038
0.397MetHis: 0.397 ± 0.024
2.062MetIle: 2.062 ± 0.064
2.197MetLys: 2.197 ± 0.063
2.133MetLeu: 2.133 ± 0.065
0.576MetMet: 0.576 ± 0.032
1.37MetAsn: 1.37 ± 0.044
0.841MetPro: 0.841 ± 0.034
0.864MetGln: 0.864 ± 0.037
0.633MetArg: 0.633 ± 0.031
1.576MetSer: 1.576 ± 0.045
1.111MetThr: 1.111 ± 0.037
1.235MetVal: 1.235 ± 0.04
0.147MetTrp: 0.147 ± 0.012
0.723MetTyr: 0.723 ± 0.036
0.0MetXaa: 0.0 ± 0.0
Asn
3.249AsnAla: 3.249 ± 0.086
0.51AsnCys: 0.51 ± 0.029
3.28AsnAsp: 3.28 ± 0.243
4.783AsnGlu: 4.783 ± 0.092
3.112AsnPhe: 3.112 ± 0.065
2.9AsnGly: 2.9 ± 0.116
0.926AsnHis: 0.926 ± 0.035
6.739AsnIle: 6.739 ± 0.138
5.991AsnLys: 5.991 ± 0.113
6.204AsnLeu: 6.204 ± 0.098
1.315AsnMet: 1.315 ± 0.042
3.943AsnAsn: 3.943 ± 0.108
2.011AsnPro: 2.011 ± 0.057
1.786AsnGln: 1.786 ± 0.054
1.982AsnArg: 1.982 ± 0.053
4.628AsnSer: 4.628 ± 0.096
2.885AsnThr: 2.885 ± 0.085
2.835AsnVal: 2.835 ± 0.075
0.372AsnTrp: 0.372 ± 0.021
2.521AsnTyr: 2.521 ± 0.06
0.0AsnXaa: 0.0 ± 0.0
Pro
1.368ProAla: 1.368 ± 0.052
0.233ProCys: 0.233 ± 0.017
1.281ProAsp: 1.281 ± 0.044
1.728ProGlu: 1.728 ± 0.05
1.637ProPhe: 1.637 ± 0.051
1.169ProGly: 1.169 ± 0.044
0.516ProHis: 0.516 ± 0.028
2.485ProIle: 2.485 ± 0.058
2.472ProLys: 2.472 ± 0.07
2.64ProLeu: 2.64 ± 0.061
0.629ProMet: 0.629 ± 0.029
1.636ProAsn: 1.636 ± 0.043
0.552ProPro: 0.552 ± 0.027
0.779ProGln: 0.779 ± 0.03
0.689ProArg: 0.689 ± 0.035
1.685ProSer: 1.685 ± 0.05
1.615ProThr: 1.615 ± 0.046
1.621ProVal: 1.621 ± 0.048
0.226ProTrp: 0.226 ± 0.018
1.229ProTyr: 1.229 ± 0.044
0.0ProXaa: 0.0 ± 0.0
Gln
1.731GlnAla: 1.731 ± 0.052
0.158GlnCys: 0.158 ± 0.013
1.317GlnAsp: 1.317 ± 0.041
2.442GlnGlu: 2.442 ± 0.056
1.084GlnPhe: 1.084 ± 0.039
1.342GlnGly: 1.342 ± 0.041
0.35GlnHis: 0.35 ± 0.021
2.62GlnIle: 2.62 ± 0.064
3.03GlnLys: 3.03 ± 0.069
2.333GlnLeu: 2.333 ± 0.059
0.724GlnMet: 0.724 ± 0.03
2.046GlnAsn: 2.046 ± 0.055
0.6GlnPro: 0.6 ± 0.028
0.742GlnGln: 0.742 ± 0.033
1.146GlnArg: 1.146 ± 0.043
1.536GlnSer: 1.536 ± 0.047
1.56GlnThr: 1.56 ± 0.045
1.621GlnVal: 1.621 ± 0.046
0.256GlnTrp: 0.256 ± 0.018
0.947GlnTyr: 0.947 ± 0.034
0.0GlnXaa: 0.0 ± 0.0
Arg
1.821ArgAla: 1.821 ± 0.061
0.249ArgCys: 0.249 ± 0.018
1.734ArgAsp: 1.734 ± 0.044
2.202ArgGlu: 2.202 ± 0.06
1.598ArgPhe: 1.598 ± 0.047
1.54ArgGly: 1.54 ± 0.045
0.511ArgHis: 0.511 ± 0.023
2.421ArgIle: 2.421 ± 0.068
2.525ArgLys: 2.525 ± 0.066
2.795ArgLeu: 2.795 ± 0.064
0.692ArgMet: 0.692 ± 0.029
1.633ArgAsn: 1.633 ± 0.042
0.706ArgPro: 0.706 ± 0.031
0.825ArgGln: 0.825 ± 0.036
1.116ArgArg: 1.116 ± 0.042
1.376ArgSer: 1.376 ± 0.037
1.388ArgThr: 1.388 ± 0.04
2.362ArgVal: 2.362 ± 0.058
0.249ArgTrp: 0.249 ± 0.019
1.262ArgTyr: 1.262 ± 0.044
0.0ArgXaa: 0.0 ± 0.0
Ser
3.407SerAla: 3.407 ± 0.073
0.621SerCys: 0.621 ± 0.026
3.162SerAsp: 3.162 ± 0.16
3.603SerGlu: 3.603 ± 0.06
4.311SerPhe: 4.311 ± 0.086
3.495SerGly: 3.495 ± 0.13
1.068SerHis: 1.068 ± 0.038
6.224SerIle: 6.224 ± 0.103
6.597SerLys: 6.597 ± 0.112
7.212SerLeu: 7.212 ± 0.113
1.613SerMet: 1.613 ± 0.047
4.118SerAsn: 4.118 ± 0.139
1.347SerPro: 1.347 ± 0.035
1.935SerGln: 1.935 ± 0.054
1.712SerArg: 1.712 ± 0.05
5.073SerSer: 5.073 ± 0.141
3.428SerThr: 3.428 ± 0.071
3.322SerVal: 3.322 ± 0.063
0.529SerTrp: 0.529 ± 0.026
2.79SerTyr: 2.79 ± 0.06
0.0SerXaa: 0.0 ± 0.0
Thr
3.071ThrAla: 3.071 ± 0.077
0.399ThrCys: 0.399 ± 0.026
3.113ThrAsp: 3.113 ± 0.762
2.339ThrGlu: 2.339 ± 0.056
2.657ThrPhe: 2.657 ± 0.073
2.984ThrGly: 2.984 ± 0.134
0.902ThrHis: 0.902 ± 0.035
5.299ThrIle: 5.299 ± 0.154
4.839ThrLys: 4.839 ± 0.094
5.663ThrLeu: 5.663 ± 0.169
0.992ThrMet: 0.992 ± 0.036
3.068ThrAsn: 3.068 ± 0.088
1.841ThrPro: 1.841 ± 0.045
1.538ThrGln: 1.538 ± 0.048
1.323ThrArg: 1.323 ± 0.039
3.451ThrSer: 3.451 ± 0.074
2.996ThrThr: 2.996 ± 0.075
2.997ThrVal: 2.997 ± 0.099
0.326ThrTrp: 0.326 ± 0.02
1.906ThrTyr: 1.906 ± 0.045
0.0ThrXaa: 0.0 ± 0.0
Val
3.898ValAla: 3.898 ± 0.09
0.646ValCys: 0.646 ± 0.031
3.625ValAsp: 3.625 ± 0.109
4.435ValGlu: 4.435 ± 0.079
2.842ValPhe: 2.842 ± 0.068
3.45ValGly: 3.45 ± 0.076
0.896ValHis: 0.896 ± 0.035
5.133ValIle: 5.133 ± 0.079
4.868ValLys: 4.868 ± 0.097
5.756ValLeu: 5.756 ± 0.093
1.28ValMet: 1.28 ± 0.049
3.346ValAsn: 3.346 ± 0.083
1.644ValPro: 1.644 ± 0.052
1.477ValGln: 1.477 ± 0.039
1.647ValArg: 1.647 ± 0.047
4.067ValSer: 4.067 ± 0.069
2.901ValThr: 2.901 ± 0.066
4.104ValVal: 4.104 ± 0.079
0.426ValTrp: 0.426 ± 0.023
2.095ValTyr: 2.095 ± 0.051
0.0ValXaa: 0.0 ± 0.0
Trp
0.431TrpAla: 0.431 ± 0.026
0.069TrpCys: 0.069 ± 0.01
0.38TrpAsp: 0.38 ± 0.022
0.443TrpGlu: 0.443 ± 0.02
0.385TrpPhe: 0.385 ± 0.024
0.444TrpGly: 0.444 ± 0.025
0.144TrpHis: 0.144 ± 0.012
0.591TrpIle: 0.591 ± 0.027
0.487TrpLys: 0.487 ± 0.025
0.742TrpLeu: 0.742 ± 0.031
0.209TrpMet: 0.209 ± 0.017
0.391TrpAsn: 0.391 ± 0.019
0.146TrpPro: 0.146 ± 0.015
0.259TrpGln: 0.259 ± 0.017
0.231TrpArg: 0.231 ± 0.018
0.356TrpSer: 0.356 ± 0.022
0.289TrpThr: 0.289 ± 0.019
0.432TrpVal: 0.432 ± 0.023
0.061TrpTrp: 0.061 ± 0.01
0.284TrpTyr: 0.284 ± 0.02
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.059TyrAla: 2.059 ± 0.053
0.386TyrCys: 0.386 ± 0.024
2.483TyrAsp: 2.483 ± 0.05
3.231TyrGlu: 3.231 ± 0.067
2.445TyrPhe: 2.445 ± 0.059
2.157TyrGly: 2.157 ± 0.075
0.659TyrHis: 0.659 ± 0.032
3.4TyrIle: 3.4 ± 0.078
4.075TyrLys: 4.075 ± 0.09
4.273TyrLeu: 4.273 ± 0.08
0.811TyrMet: 0.811 ± 0.032
2.278TyrAsn: 2.278 ± 0.055
1.163TyrPro: 1.163 ± 0.042
1.081TyrGln: 1.081 ± 0.036
1.165TyrArg: 1.165 ± 0.042
2.784TyrSer: 2.784 ± 0.07
1.862TyrThr: 1.862 ± 0.05
1.878TyrVal: 1.878 ± 0.05
0.336TyrTrp: 0.336 ± 0.02
1.672TyrTyr: 1.672 ± 0.06
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 2581 proteins (831417 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