Amino acid dipepetide frequency for Helicobacter sp. 11S03491-1

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
2.785AlaAla: 2.785 ± 0.108
0.896AlaCys: 0.896 ± 0.049
2.571AlaAsp: 2.571 ± 0.079
2.076AlaGlu: 2.076 ± 0.057
3.178AlaPhe: 3.178 ± 0.086
4.141AlaGly: 4.141 ± 0.1
1.287AlaHis: 1.287 ± 0.061
6.033AlaIle: 6.033 ± 0.118
5.956AlaLys: 5.956 ± 0.119
7.265AlaLeu: 7.265 ± 0.131
1.73AlaMet: 1.73 ± 0.06
3.383AlaAsn: 3.383 ± 0.085
1.832AlaPro: 1.832 ± 0.06
3.199AlaGln: 3.199 ± 0.075
2.268AlaArg: 2.268 ± 0.071
4.13AlaSer: 4.13 ± 0.101
3.089AlaThr: 3.089 ± 0.083
2.486AlaVal: 2.486 ± 0.075
0.419AlaTrp: 0.419 ± 0.03
2.812AlaTyr: 2.812 ± 0.079
0.0AlaXaa: 0.0 ± 0.0
Cys
0.884CysAla: 0.884 ± 0.044
0.145CysCys: 0.145 ± 0.017
0.709CysAsp: 0.709 ± 0.039
0.726CysGlu: 0.726 ± 0.041
0.577CysPhe: 0.577 ± 0.035
0.97CysGly: 0.97 ± 0.053
0.251CysHis: 0.251 ± 0.024
1.059CysIle: 1.059 ± 0.05
0.823CysLys: 0.823 ± 0.043
0.944CysLeu: 0.944 ± 0.047
0.255CysMet: 0.255 ± 0.022
0.479CysAsn: 0.479 ± 0.027
0.46CysPro: 0.46 ± 0.03
0.359CysGln: 0.359 ± 0.029
0.281CysArg: 0.281 ± 0.025
0.652CysSer: 0.652 ± 0.044
0.376CysThr: 0.376 ± 0.028
0.847CysVal: 0.847 ± 0.046
0.073CysTrp: 0.073 ± 0.012
0.397CysTyr: 0.397 ± 0.029
0.0CysXaa: 0.0 ± 0.0
Asp
2.806AspAla: 2.806 ± 0.069
0.618AspCys: 0.618 ± 0.038
2.171AspAsp: 2.171 ± 0.068
3.538AspGlu: 3.538 ± 0.097
3.744AspPhe: 3.744 ± 0.099
3.106AspGly: 3.106 ± 0.081
0.728AspHis: 0.728 ± 0.04
5.655AspIle: 5.655 ± 0.114
4.826AspLys: 4.826 ± 0.105
4.999AspLeu: 4.999 ± 0.104
1.456AspMet: 1.456 ± 0.048
2.523AspAsn: 2.523 ± 0.086
1.614AspPro: 1.614 ± 0.06
1.054AspGln: 1.054 ± 0.047
1.732AspArg: 1.732 ± 0.063
3.353AspSer: 3.353 ± 0.097
2.75AspThr: 2.75 ± 0.067
2.722AspVal: 2.722 ± 0.072
0.428AspTrp: 0.428 ± 0.027
2.378AspTyr: 2.378 ± 0.074
0.0AspXaa: 0.0 ± 0.0
Glu
3.77GluAla: 3.77 ± 0.099
0.661GluCys: 0.661 ± 0.042
3.009GluAsp: 3.009 ± 0.072
4.374GluGlu: 4.374 ± 0.123
3.169GluPhe: 3.169 ± 0.093
3.532GluGly: 3.532 ± 0.099
0.927GluHis: 0.927 ± 0.042
6.657GluIle: 6.657 ± 0.128
5.506GluLys: 5.506 ± 0.133
5.571GluLeu: 5.571 ± 0.116
1.583GluMet: 1.583 ± 0.057
4.02GluAsn: 4.02 ± 0.088
1.21GluPro: 1.21 ± 0.056
1.702GluGln: 1.702 ± 0.063
1.84GluArg: 1.84 ± 0.071
3.393GluSer: 3.393 ± 0.085
2.052GluThr: 2.052 ± 0.057
3.78GluVal: 3.78 ± 0.09
0.542GluTrp: 0.542 ± 0.033
2.219GluTyr: 2.219 ± 0.077
0.0GluXaa: 0.0 ± 0.0
Phe
2.974PheAla: 2.974 ± 0.078
0.858PheCys: 0.858 ± 0.041
3.318PheAsp: 3.318 ± 0.08
3.329PheGlu: 3.329 ± 0.083
2.893PhePhe: 2.893 ± 0.088
4.294PheGly: 4.294 ± 0.097
0.884PheHis: 0.884 ± 0.045
4.612PheIle: 4.612 ± 0.118
3.508PheLys: 3.508 ± 0.085
5.666PheLeu: 5.666 ± 0.152
1.264PheMet: 1.264 ± 0.052
2.527PheAsn: 2.527 ± 0.082
1.352PhePro: 1.352 ± 0.048
1.426PheGln: 1.426 ± 0.052
1.529PheArg: 1.529 ± 0.048
3.966PheSer: 3.966 ± 0.097
1.843PheThr: 1.843 ± 0.066
3.132PheVal: 3.132 ± 0.09
0.544PheTrp: 0.544 ± 0.037
2.396PheTyr: 2.396 ± 0.067
0.0PheXaa: 0.0 ± 0.0
Gly
4.284GlyAla: 4.284 ± 0.105
0.724GlyCys: 0.724 ± 0.043
3.307GlyAsp: 3.307 ± 0.091
3.793GlyGlu: 3.793 ± 0.106
3.877GlyPhe: 3.877 ± 0.097
5.15GlyGly: 5.15 ± 0.138
1.136GlyHis: 1.136 ± 0.044
7.102GlyIle: 7.102 ± 0.143
5.038GlyLys: 5.038 ± 0.108
5.791GlyLeu: 5.791 ± 0.107
1.728GlyMet: 1.728 ± 0.061
3.119GlyAsn: 3.119 ± 0.098
0.951GlyPro: 0.951 ± 0.046
1.648GlyGln: 1.648 ± 0.052
2.162GlyArg: 2.162 ± 0.072
4.189GlySer: 4.189 ± 0.134
2.409GlyThr: 2.409 ± 0.082
4.795GlyVal: 4.795 ± 0.086
0.559GlyTrp: 0.559 ± 0.035
3.054GlyTyr: 3.054 ± 0.086
0.0GlyXaa: 0.0 ± 0.0
His
1.132HisAla: 1.132 ± 0.054
0.251HisCys: 0.251 ± 0.021
0.696HisAsp: 0.696 ± 0.043
0.816HisGlu: 0.816 ± 0.039
1.13HisPhe: 1.13 ± 0.042
0.976HisGly: 0.976 ± 0.045
0.655HisHis: 0.655 ± 0.036
1.935HisIle: 1.935 ± 0.069
1.564HisLys: 1.564 ± 0.051
2.087HisLeu: 2.087 ± 0.064
0.398HisMet: 0.398 ± 0.029
0.989HisAsn: 0.989 ± 0.043
0.953HisPro: 0.953 ± 0.049
1.086HisGln: 1.086 ± 0.046
0.704HisArg: 0.704 ± 0.036
1.367HisSer: 1.367 ± 0.054
1.248HisThr: 1.248 ± 0.048
0.678HisVal: 0.678 ± 0.034
0.194HisTrp: 0.194 ± 0.024
0.838HisTyr: 0.838 ± 0.038
0.0HisXaa: 0.0 ± 0.0
Ile
6.94IleAla: 6.94 ± 0.145
1.24IleCys: 1.24 ± 0.054
5.351IleAsp: 5.351 ± 0.119
5.692IleGlu: 5.692 ± 0.121
5.269IlePhe: 5.269 ± 0.14
6.32IleGly: 6.32 ± 0.124
1.851IleHis: 1.851 ± 0.055
7.792IleIle: 7.792 ± 0.161
7.699IleLys: 7.699 ± 0.158
10.282IleLeu: 10.282 ± 0.19
1.793IleMet: 1.793 ± 0.068
4.849IleAsn: 4.849 ± 0.107
3.61IlePro: 3.61 ± 0.092
3.899IleGln: 3.899 ± 0.092
2.94IleArg: 2.94 ± 0.072
6.902IleSer: 6.902 ± 0.121
4.707IleThr: 4.707 ± 0.106
4.815IleVal: 4.815 ± 0.109
0.68IleTrp: 0.68 ± 0.04
3.802IleTyr: 3.802 ± 0.102
0.0IleXaa: 0.0 ± 0.0
Lys
4.787LysAla: 4.787 ± 0.099
0.62LysCys: 0.62 ± 0.043
5.286LysAsp: 5.286 ± 0.124
6.28LysGlu: 6.28 ± 0.171
3.124LysPhe: 3.124 ± 0.081
4.342LysGly: 4.342 ± 0.108
1.473LysHis: 1.473 ± 0.065
9.729LysIle: 9.729 ± 0.17
7.818LysLys: 7.818 ± 0.136
6.597LysLeu: 6.597 ± 0.133
2.171LysMet: 2.171 ± 0.065
7.628LysAsn: 7.628 ± 0.135
2.57LysPro: 2.57 ± 0.071
3.156LysGln: 3.156 ± 0.094
2.523LysArg: 2.523 ± 0.074
5.228LysSer: 5.228 ± 0.096
4.584LysThr: 4.584 ± 0.084
3.677LysVal: 3.677 ± 0.092
0.544LysTrp: 0.544 ± 0.034
3.234LysTyr: 3.234 ± 0.075
0.0LysXaa: 0.0 ± 0.0
Leu
6.329LeuAla: 6.329 ± 0.13
1.248LeuCys: 1.248 ± 0.061
5.638LeuAsp: 5.638 ± 0.105
7.154LeuGlu: 7.154 ± 0.143
4.739LeuPhe: 4.739 ± 0.108
6.748LeuGly: 6.748 ± 0.136
1.935LeuHis: 1.935 ± 0.061
7.668LeuIle: 7.668 ± 0.155
9.386LeuLys: 9.386 ± 0.136
8.956LeuLeu: 8.956 ± 0.156
2.251LeuMet: 2.251 ± 0.065
5.528LeuAsn: 5.528 ± 0.115
3.59LeuPro: 3.59 ± 0.086
4.042LeuGln: 4.042 ± 0.129
3.337LeuArg: 3.337 ± 0.078
7.614LeuSer: 7.614 ± 0.13
3.789LeuThr: 3.789 ± 0.097
4.564LeuVal: 4.564 ± 0.089
0.76LeuTrp: 0.76 ± 0.043
3.491LeuTyr: 3.491 ± 0.092
0.0LeuXaa: 0.0 ± 0.0
Met
1.637MetAla: 1.637 ± 0.056
0.238MetCys: 0.238 ± 0.024
1.147MetAsp: 1.147 ± 0.042
1.298MetGlu: 1.298 ± 0.044
1.084MetPhe: 1.084 ± 0.054
1.836MetGly: 1.836 ± 0.061
0.346MetHis: 0.346 ± 0.027
2.234MetIle: 2.234 ± 0.061
1.936MetLys: 1.936 ± 0.055
2.523MetLeu: 2.523 ± 0.073
0.62MetMet: 0.62 ± 0.035
1.223MetAsn: 1.223 ± 0.05
1.117MetPro: 1.117 ± 0.044
1.113MetGln: 1.113 ± 0.048
0.95MetArg: 0.95 ± 0.039
1.547MetSer: 1.547 ± 0.058
0.84MetThr: 0.84 ± 0.038
1.229MetVal: 1.229 ± 0.054
0.153MetTrp: 0.153 ± 0.018
0.531MetTyr: 0.531 ± 0.026
0.0MetXaa: 0.0 ± 0.0
Asn
3.869AsnAla: 3.869 ± 0.089
0.408AsnCys: 0.408 ± 0.028
2.556AsnAsp: 2.556 ± 0.075
2.858AsnGlu: 2.858 ± 0.062
3.026AsnPhe: 3.026 ± 0.082
3.128AsnGly: 3.128 ± 0.101
1.316AsnHis: 1.316 ± 0.049
6.215AsnIle: 6.215 ± 0.139
4.493AsnLys: 4.493 ± 0.105
5.858AsnLeu: 5.858 ± 0.117
1.156AsnMet: 1.156 ± 0.051
2.975AsnAsn: 2.975 ± 0.099
2.83AsnPro: 2.83 ± 0.077
2.583AsnGln: 2.583 ± 0.084
1.709AsnArg: 1.709 ± 0.055
3.517AsnSer: 3.517 ± 0.098
3.27AsnThr: 3.27 ± 0.11
2.516AsnVal: 2.516 ± 0.065
0.296AsnTrp: 0.296 ± 0.023
2.232AsnTyr: 2.232 ± 0.075
0.0AsnXaa: 0.0 ± 0.0
Pro
1.678ProAla: 1.678 ± 0.053
0.311ProCys: 0.311 ± 0.026
1.646ProAsp: 1.646 ± 0.056
1.683ProGlu: 1.683 ± 0.068
1.715ProPhe: 1.715 ± 0.054
1.452ProGly: 1.452 ± 0.057
0.942ProHis: 0.942 ± 0.044
3.167ProIle: 3.167 ± 0.067
3.264ProLys: 3.264 ± 0.083
3.54ProLeu: 3.54 ± 0.086
0.702ProMet: 0.702 ± 0.034
2.044ProAsn: 2.044 ± 0.073
1.069ProPro: 1.069 ± 0.052
1.726ProGln: 1.726 ± 0.056
0.847ProArg: 0.847 ± 0.049
2.231ProSer: 2.231 ± 0.069
1.858ProThr: 1.858 ± 0.052
1.65ProVal: 1.65 ± 0.058
0.248ProTrp: 0.248 ± 0.021
1.635ProTyr: 1.635 ± 0.056
0.0ProXaa: 0.0 ± 0.0
Gln
2.856GlnAla: 2.856 ± 0.086
0.281GlnCys: 0.281 ± 0.023
2.391GlnAsp: 2.391 ± 0.057
3.257GlnGlu: 3.257 ± 0.103
1.108GlnPhe: 1.108 ± 0.043
1.862GlnGly: 1.862 ± 0.068
0.54GlnHis: 0.54 ± 0.032
3.769GlnIle: 3.769 ± 0.107
4.858GlnLys: 4.858 ± 0.115
2.272GlnLeu: 2.272 ± 0.069
0.87GlnMet: 0.87 ± 0.04
3.366GlnAsn: 3.366 ± 0.092
0.909GlnPro: 0.909 ± 0.042
0.946GlnGln: 0.946 ± 0.044
1.372GlnArg: 1.372 ± 0.045
2.668GlnSer: 2.668 ± 0.075
2.499GlnThr: 2.499 ± 0.076
1.629GlnVal: 1.629 ± 0.067
0.335GlnTrp: 0.335 ± 0.023
1.244GlnTyr: 1.244 ± 0.05
0.0GlnXaa: 0.0 ± 0.0
Arg
1.909ArgAla: 1.909 ± 0.059
0.27ArgCys: 0.27 ± 0.025
1.91ArgAsp: 1.91 ± 0.059
2.238ArgGlu: 2.238 ± 0.08
1.888ArgPhe: 1.888 ± 0.055
2.054ArgGly: 2.054 ± 0.071
0.62ArgHis: 0.62 ± 0.034
3.277ArgIle: 3.277 ± 0.095
2.288ArgLys: 2.288 ± 0.073
3.255ArgLeu: 3.255 ± 0.084
0.806ArgMet: 0.806 ± 0.046
1.672ArgAsn: 1.672 ± 0.055
0.907ArgPro: 0.907 ± 0.045
1.009ArgGln: 1.009 ± 0.046
1.249ArgArg: 1.249 ± 0.057
1.894ArgSer: 1.894 ± 0.058
1.223ArgThr: 1.223 ± 0.048
2.039ArgVal: 2.039 ± 0.065
0.244ArgTrp: 0.244 ± 0.022
1.558ArgTyr: 1.558 ± 0.052
0.0ArgXaa: 0.0 ± 0.0
Ser
3.932SerAla: 3.932 ± 0.097
0.709SerCys: 0.709 ± 0.038
3.091SerAsp: 3.091 ± 0.087
3.052SerGlu: 3.052 ± 0.085
3.798SerPhe: 3.798 ± 0.095
4.621SerGly: 4.621 ± 0.118
1.538SerHis: 1.538 ± 0.059
6.576SerIle: 6.576 ± 0.112
5.729SerLys: 5.729 ± 0.109
7.332SerLeu: 7.332 ± 0.124
1.681SerMet: 1.681 ± 0.054
3.435SerAsn: 3.435 ± 0.091
2.577SerPro: 2.577 ± 0.075
3.05SerGln: 3.05 ± 0.087
2.115SerArg: 2.115 ± 0.06
4.597SerSer: 4.597 ± 0.121
2.743SerThr: 2.743 ± 0.082
3.752SerVal: 3.752 ± 0.103
0.531SerTrp: 0.531 ± 0.035
2.681SerTyr: 2.681 ± 0.074
0.0SerXaa: 0.0 ± 0.0
Thr
2.247ThrAla: 2.247 ± 0.072
0.397ThrCys: 0.397 ± 0.028
2.162ThrAsp: 2.162 ± 0.056
1.605ThrGlu: 1.605 ± 0.053
2.093ThrPhe: 2.093 ± 0.075
2.754ThrGly: 2.754 ± 0.095
1.313ThrHis: 1.313 ± 0.057
4.026ThrIle: 4.026 ± 0.101
3.901ThrLys: 3.901 ± 0.097
5.465ThrLeu: 5.465 ± 0.106
0.875ThrMet: 0.875 ± 0.038
2.473ThrAsn: 2.473 ± 0.091
2.644ThrPro: 2.644 ± 0.07
3.141ThrGln: 3.141 ± 0.087
1.396ThrArg: 1.396 ± 0.053
3.381ThrSer: 3.381 ± 0.107
2.685ThrThr: 2.685 ± 0.091
1.264ThrVal: 1.264 ± 0.056
0.298ThrTrp: 0.298 ± 0.023
1.814ThrTyr: 1.814 ± 0.056
0.0ThrXaa: 0.0 ± 0.0
Val
3.543ValAla: 3.543 ± 0.092
0.847ValCys: 0.847 ± 0.044
2.635ValAsp: 2.635 ± 0.073
2.609ValGlu: 2.609 ± 0.082
3.186ValPhe: 3.186 ± 0.087
3.986ValGly: 3.986 ± 0.089
0.825ValHis: 0.825 ± 0.043
4.949ValIle: 4.949 ± 0.107
3.227ValLys: 3.227 ± 0.091
5.519ValLeu: 5.519 ± 0.103
1.326ValMet: 1.326 ± 0.051
2.192ValAsn: 2.192 ± 0.072
1.547ValPro: 1.547 ± 0.053
1.519ValGln: 1.519 ± 0.057
1.614ValArg: 1.614 ± 0.05
3.986ValSer: 3.986 ± 0.093
1.78ValThr: 1.78 ± 0.06
3.56ValVal: 3.56 ± 0.094
0.458ValTrp: 0.458 ± 0.032
2.048ValTyr: 2.048 ± 0.055
0.0ValXaa: 0.0 ± 0.0
Trp
0.506TrpAla: 0.506 ± 0.038
0.091TrpCys: 0.091 ± 0.012
0.382TrpAsp: 0.382 ± 0.028
0.475TrpGlu: 0.475 ± 0.029
0.384TrpPhe: 0.384 ± 0.027
0.678TrpGly: 0.678 ± 0.043
0.188TrpHis: 0.188 ± 0.019
0.791TrpIle: 0.791 ± 0.046
0.467TrpLys: 0.467 ± 0.031
0.851TrpLeu: 0.851 ± 0.045
0.192TrpMet: 0.192 ± 0.017
0.408TrpAsn: 0.408 ± 0.024
0.106TrpPro: 0.106 ± 0.014
0.352TrpGln: 0.352 ± 0.027
0.311TrpArg: 0.311 ± 0.025
0.408TrpSer: 0.408 ± 0.028
0.27TrpThr: 0.27 ± 0.023
0.493TrpVal: 0.493 ± 0.037
0.108TrpTrp: 0.108 ± 0.017
0.296TrpTyr: 0.296 ± 0.023
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.666TyrAla: 2.666 ± 0.072
0.454TyrCys: 0.454 ± 0.032
2.225TyrAsp: 2.225 ± 0.067
2.664TyrGlu: 2.664 ± 0.086
2.333TyrPhe: 2.333 ± 0.075
2.866TyrGly: 2.866 ± 0.076
0.94TyrHis: 0.94 ± 0.048
3.188TyrIle: 3.188 ± 0.076
3.083TyrLys: 3.083 ± 0.076
3.992TyrLeu: 3.992 ± 0.101
0.743TyrMet: 0.743 ± 0.04
1.979TyrAsn: 1.979 ± 0.078
1.558TyrPro: 1.558 ± 0.058
2.02TyrGln: 2.02 ± 0.063
1.434TyrArg: 1.434 ± 0.05
2.519TyrSer: 2.519 ± 0.073
1.918TyrThr: 1.918 ± 0.068
1.73TyrVal: 1.73 ± 0.056
0.346TyrTrp: 0.346 ± 0.027
1.668TyrTyr: 1.668 ± 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 1649 proteins (537068 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