Amino acid dipepetide frequency for Mycoplasma testudineum

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
4.464AlaAla: 4.464 ± 0.184
0.143AlaCys: 0.143 ± 0.021
2.631AlaAsp: 2.631 ± 0.116
2.924AlaGlu: 2.924 ± 0.114
2.907AlaPhe: 2.907 ± 0.118
3.078AlaGly: 3.078 ± 0.123
0.633AlaHis: 0.633 ± 0.049
6.115AlaIle: 6.115 ± 0.184
5.415AlaLys: 5.415 ± 0.162
5.485AlaLeu: 5.485 ± 0.16
1.123AlaMet: 1.123 ± 0.079
4.145AlaAsn: 4.145 ± 0.157
1.392AlaPro: 1.392 ± 0.08
2.26AlaGln: 2.26 ± 0.102
1.882AlaArg: 1.882 ± 0.091
4.072AlaSer: 4.072 ± 0.144
3.792AlaThr: 3.792 ± 0.183
3.068AlaVal: 3.068 ± 0.123
0.507AlaTrp: 0.507 ± 0.042
1.976AlaTyr: 1.976 ± 0.075
0.0AlaXaa: 0.0 ± 0.0
Cys
0.15CysAla: 0.15 ± 0.025
0.024CysCys: 0.024 ± 0.014
0.143CysAsp: 0.143 ± 0.023
0.143CysGlu: 0.143 ± 0.02
0.136CysPhe: 0.136 ± 0.024
0.182CysGly: 0.182 ± 0.029
0.042CysHis: 0.042 ± 0.013
0.175CysIle: 0.175 ± 0.027
0.217CysLys: 0.217 ± 0.028
0.234CysLeu: 0.234 ± 0.032
0.049CysMet: 0.049 ± 0.014
0.182CysAsn: 0.182 ± 0.024
0.077CysPro: 0.077 ± 0.016
0.094CysGln: 0.094 ± 0.019
0.059CysArg: 0.059 ± 0.014
0.192CysSer: 0.192 ± 0.025
0.091CysThr: 0.091 ± 0.017
0.08CysVal: 0.08 ± 0.017
0.024CysTrp: 0.024 ± 0.01
0.056CysTyr: 0.056 ± 0.013
0.0CysXaa: 0.0 ± 0.0
Asp
3.057AspAla: 3.057 ± 0.131
0.087AspCys: 0.087 ± 0.017
2.54AspAsp: 2.54 ± 0.13
3.838AspGlu: 3.838 ± 0.14
3.281AspPhe: 3.281 ± 0.125
2.41AspGly: 2.41 ± 0.118
0.756AspHis: 0.756 ± 0.054
4.548AspIle: 4.548 ± 0.132
5.09AspLys: 5.09 ± 0.13
5.478AspLeu: 5.478 ± 0.15
0.777AspMet: 0.777 ± 0.054
3.565AspAsn: 3.565 ± 0.117
1.651AspPro: 1.651 ± 0.077
1.714AspGln: 1.714 ± 0.08
1.525AspArg: 1.525 ± 0.09
4.065AspSer: 4.065 ± 0.137
2.319AspThr: 2.319 ± 0.099
3.071AspVal: 3.071 ± 0.107
0.476AspTrp: 0.476 ± 0.043
2.403AspTyr: 2.403 ± 0.102
0.0AspXaa: 0.0 ± 0.0
Glu
3.67GluAla: 3.67 ± 0.154
0.07GluCys: 0.07 ± 0.017
2.568GluAsp: 2.568 ± 0.111
3.768GluGlu: 3.768 ± 0.176
3.547GluPhe: 3.547 ± 0.107
2.169GluGly: 2.169 ± 0.086
0.805GluHis: 0.805 ± 0.059
7.14GluIle: 7.14 ± 0.193
6.629GluLys: 6.629 ± 0.23
6.216GluLeu: 6.216 ± 0.143
1.508GluMet: 1.508 ± 0.083
5.8GluAsn: 5.8 ± 0.164
1.322GluPro: 1.322 ± 0.101
2.232GluGln: 2.232 ± 0.111
1.746GluArg: 1.746 ± 0.093
3.799GluSer: 3.799 ± 0.115
3.274GluThr: 3.274 ± 0.115
3.393GluVal: 3.393 ± 0.133
0.581GluTrp: 0.581 ± 0.045
2.568GluTyr: 2.568 ± 0.102
0.0GluXaa: 0.0 ± 0.0
Phe
3.033PheAla: 3.033 ± 0.098
0.189PheCys: 0.189 ± 0.027
3.488PheAsp: 3.488 ± 0.13
3.757PheGlu: 3.757 ± 0.13
2.928PhePhe: 2.928 ± 0.139
2.652PheGly: 2.652 ± 0.102
0.665PheHis: 0.665 ± 0.054
5.251PheIle: 5.251 ± 0.207
4.835PheLys: 4.835 ± 0.155
5.093PheLeu: 5.093 ± 0.165
0.927PheMet: 0.927 ± 0.061
4.138PheAsn: 4.138 ± 0.14
1.291PhePro: 1.291 ± 0.066
1.623PheGln: 1.623 ± 0.072
1.679PheArg: 1.679 ± 0.084
4.716PheSer: 4.716 ± 0.136
2.987PheThr: 2.987 ± 0.116
3.435PheVal: 3.435 ± 0.133
0.602PheTrp: 0.602 ± 0.052
2.071PheTyr: 2.071 ± 0.099
0.0PheXaa: 0.0 ± 0.0
Gly
2.998GlyAla: 2.998 ± 0.11
0.07GlyCys: 0.07 ± 0.015
2.302GlyAsp: 2.302 ± 0.098
2.235GlyGlu: 2.235 ± 0.097
3.012GlyPhe: 3.012 ± 0.113
2.729GlyGly: 2.729 ± 0.14
0.84GlyHis: 0.84 ± 0.065
5.055GlyIle: 5.055 ± 0.161
4.194GlyLys: 4.194 ± 0.158
4.194GlyLeu: 4.194 ± 0.131
0.983GlyMet: 0.983 ± 0.055
2.886GlyAsn: 2.886 ± 0.121
1.056GlyPro: 1.056 ± 0.059
1.756GlyGln: 1.756 ± 0.089
1.469GlyArg: 1.469 ± 0.083
3.414GlySer: 3.414 ± 0.123
3.071GlyThr: 3.071 ± 0.167
2.98GlyVal: 2.98 ± 0.128
0.472GlyTrp: 0.472 ± 0.047
2.214GlyTyr: 2.214 ± 0.094
0.0GlyXaa: 0.0 ± 0.0
His
0.714HisAla: 0.714 ± 0.053
0.07HisCys: 0.07 ± 0.016
0.791HisAsp: 0.791 ± 0.052
0.885HisGlu: 0.885 ± 0.053
0.731HisPhe: 0.731 ± 0.057
0.871HisGly: 0.871 ± 0.064
0.287HisHis: 0.287 ± 0.033
1.175HisIle: 1.175 ± 0.08
1.207HisLys: 1.207 ± 0.074
1.245HisLeu: 1.245 ± 0.07
0.245HisMet: 0.245 ± 0.034
1.018HisAsn: 1.018 ± 0.061
0.479HisPro: 0.479 ± 0.05
0.385HisGln: 0.385 ± 0.036
0.469HisArg: 0.469 ± 0.041
1.039HisSer: 1.039 ± 0.073
0.619HisThr: 0.619 ± 0.048
0.787HisVal: 0.787 ± 0.059
0.115HisTrp: 0.115 ± 0.021
0.644HisTyr: 0.644 ± 0.048
0.0HisXaa: 0.0 ± 0.0
Ile
5.849IleAla: 5.849 ± 0.17
0.304IleCys: 0.304 ± 0.03
5.912IleAsp: 5.912 ± 0.138
6.395IleGlu: 6.395 ± 0.179
5.209IlePhe: 5.209 ± 0.192
4.569IleGly: 4.569 ± 0.135
1.249IleHis: 1.249 ± 0.062
8.459IleIle: 8.459 ± 0.248
8.508IleLys: 8.508 ± 0.21
8.434IleLeu: 8.434 ± 0.254
1.627IleMet: 1.627 ± 0.082
7.56IleAsn: 7.56 ± 0.185
2.655IlePro: 2.655 ± 0.117
2.662IleGln: 2.662 ± 0.117
2.585IleArg: 2.585 ± 0.117
8.308IleSer: 8.308 ± 0.173
5.328IleThr: 5.328 ± 0.163
6.251IleVal: 6.251 ± 0.159
0.791IleTrp: 0.791 ± 0.061
3.582IleTyr: 3.582 ± 0.142
0.0IleXaa: 0.0 ± 0.0
Lys
4.534LysAla: 4.534 ± 0.157
0.15LysCys: 0.15 ± 0.024
4.737LysAsp: 4.737 ± 0.128
5.933LysGlu: 5.933 ± 0.173
4.684LysPhe: 4.684 ± 0.146
3.267LysGly: 3.267 ± 0.131
1.329LysHis: 1.329 ± 0.073
10.236LysIle: 10.236 ± 0.206
8.588LysLys: 8.588 ± 0.24
8.476LysLeu: 8.476 ± 0.194
2.298LysMet: 2.298 ± 0.109
7.78LysAsn: 7.78 ± 0.203
2.2LysPro: 2.2 ± 0.121
2.9LysGln: 2.9 ± 0.118
2.91LysArg: 2.91 ± 0.121
6.36LysSer: 6.36 ± 0.146
5.279LysThr: 5.279 ± 0.153
4.964LysVal: 4.964 ± 0.134
0.955LysTrp: 0.955 ± 0.061
4.464LysTyr: 4.464 ± 0.18
0.0LysXaa: 0.0 ± 0.0
Leu
5.737LeuAla: 5.737 ± 0.163
0.22LeuCys: 0.22 ± 0.027
5.03LeuAsp: 5.03 ± 0.135
6.167LeuGlu: 6.167 ± 0.192
5.051LeuPhe: 5.051 ± 0.181
4.614LeuGly: 4.614 ± 0.145
1.252LeuHis: 1.252 ± 0.073
9.113LeuIle: 9.113 ± 0.242
8.885LeuLys: 8.885 ± 0.21
8.119LeuLeu: 8.119 ± 0.231
1.606LeuMet: 1.606 ± 0.07
7.136LeuAsn: 7.136 ± 0.176
2.655LeuPro: 2.655 ± 0.101
2.634LeuGln: 2.634 ± 0.091
2.809LeuArg: 2.809 ± 0.098
7.374LeuSer: 7.374 ± 0.17
5.461LeuThr: 5.461 ± 0.172
5.772LeuVal: 5.772 ± 0.147
0.759LeuTrp: 0.759 ± 0.061
2.788LeuTyr: 2.788 ± 0.104
0.0LeuXaa: 0.0 ± 0.0
Met
1.298MetAla: 1.298 ± 0.083
0.024MetCys: 0.024 ± 0.008
0.843MetAsp: 0.843 ± 0.057
1.07MetGlu: 1.07 ± 0.068
1.007MetPhe: 1.007 ± 0.069
0.728MetGly: 0.728 ± 0.057
0.308MetHis: 0.308 ± 0.028
1.725MetIle: 1.725 ± 0.083
1.903MetLys: 1.903 ± 0.096
1.616MetLeu: 1.616 ± 0.089
0.308MetMet: 0.308 ± 0.036
1.413MetAsn: 1.413 ± 0.063
0.595MetPro: 0.595 ± 0.043
0.693MetGln: 0.693 ± 0.052
0.602MetArg: 0.602 ± 0.044
1.455MetSer: 1.455 ± 0.067
0.871MetThr: 0.871 ± 0.061
1.067MetVal: 1.067 ± 0.061
0.203MetTrp: 0.203 ± 0.027
0.609MetTyr: 0.609 ± 0.046
0.0MetXaa: 0.0 ± 0.0
Asn
3.575AsnAla: 3.575 ± 0.135
0.157AsnCys: 0.157 ± 0.028
4.236AsnAsp: 4.236 ± 0.147
5.034AsnGlu: 5.034 ± 0.138
4.67AsnPhe: 4.67 ± 0.155
3.617AsnGly: 3.617 ± 0.183
1.063AsnHis: 1.063 ± 0.077
6.807AsnIle: 6.807 ± 0.176
6.839AsnLys: 6.839 ± 0.162
7.616AsnLeu: 7.616 ± 0.175
1.207AsnMet: 1.207 ± 0.067
6.125AsnAsn: 6.125 ± 0.211
2.816AsnPro: 2.816 ± 0.118
2.809AsnGln: 2.809 ± 0.136
2.151AsnArg: 2.151 ± 0.082
6.22AsnSer: 6.22 ± 0.222
3.533AsnThr: 3.533 ± 0.166
4.163AsnVal: 4.163 ± 0.12
0.924AsnTrp: 0.924 ± 0.056
3.803AsnTyr: 3.803 ± 0.136
0.0AsnXaa: 0.0 ± 0.0
Pro
1.441ProAla: 1.441 ± 0.081
0.063ProCys: 0.063 ± 0.015
1.326ProAsp: 1.326 ± 0.078
2.242ProGlu: 2.242 ± 0.12
1.343ProPhe: 1.343 ± 0.071
1.399ProGly: 1.399 ± 0.078
0.497ProHis: 0.497 ± 0.046
2.417ProIle: 2.417 ± 0.09
2.12ProLys: 2.12 ± 0.097
2.288ProLeu: 2.288 ± 0.097
0.458ProMet: 0.458 ± 0.037
2.109ProAsn: 2.109 ± 0.096
0.504ProPro: 0.504 ± 0.056
0.826ProGln: 0.826 ± 0.049
0.752ProArg: 0.752 ± 0.055
2.095ProSer: 2.095 ± 0.099
1.893ProThr: 1.893 ± 0.113
1.83ProVal: 1.83 ± 0.079
0.304ProTrp: 0.304 ± 0.036
1.028ProTyr: 1.028 ± 0.059
0.0ProXaa: 0.0 ± 0.0
Gln
2.032GlnAla: 2.032 ± 0.104
0.07GlnCys: 0.07 ± 0.016
1.476GlnAsp: 1.476 ± 0.068
1.973GlnGlu: 1.973 ± 0.1
1.728GlnPhe: 1.728 ± 0.083
1.483GlnGly: 1.483 ± 0.08
0.357GlnHis: 0.357 ± 0.037
3.257GlnIle: 3.257 ± 0.116
3.32GlnLys: 3.32 ± 0.12
3.155GlnLeu: 3.155 ± 0.122
0.658GlnMet: 0.658 ± 0.05
3.089GlnAsn: 3.089 ± 0.144
0.819GlnPro: 0.819 ± 0.076
0.847GlnGln: 0.847 ± 0.076
1.217GlnArg: 1.217 ± 0.083
2.134GlnSer: 2.134 ± 0.096
1.735GlnThr: 1.735 ± 0.091
1.76GlnVal: 1.76 ± 0.076
0.287GlnTrp: 0.287 ± 0.036
1.287GlnTyr: 1.287 ± 0.064
0.0GlnXaa: 0.0 ± 0.0
Arg
1.767ArgAla: 1.767 ± 0.084
0.084ArgCys: 0.084 ± 0.02
1.445ArgAsp: 1.445 ± 0.066
1.791ArgGlu: 1.791 ± 0.089
1.539ArgPhe: 1.539 ± 0.074
1.35ArgGly: 1.35 ± 0.078
0.413ArgHis: 0.413 ± 0.038
2.984ArgIle: 2.984 ± 0.113
3.04ArgLys: 3.04 ± 0.128
2.813ArgLeu: 2.813 ± 0.105
0.658ArgMet: 0.658 ± 0.057
2.379ArgAsn: 2.379 ± 0.106
0.763ArgPro: 0.763 ± 0.056
1.133ArgGln: 1.133 ± 0.069
1.112ArgArg: 1.112 ± 0.061
1.907ArgSer: 1.907 ± 0.085
1.609ArgThr: 1.609 ± 0.08
1.826ArgVal: 1.826 ± 0.091
0.322ArgTrp: 0.322 ± 0.032
1.266ArgTyr: 1.266 ± 0.067
0.0ArgXaa: 0.0 ± 0.0
Ser
4.187SerAla: 4.187 ± 0.176
0.276SerCys: 0.276 ± 0.029
4.009SerAsp: 4.009 ± 0.13
4.709SerGlu: 4.709 ± 0.15
4.285SerPhe: 4.285 ± 0.149
4.194SerGly: 4.194 ± 0.13
0.986SerHis: 0.986 ± 0.068
6.734SerIle: 6.734 ± 0.16
7.154SerLys: 7.154 ± 0.193
7.126SerLeu: 7.126 ± 0.174
1.175SerMet: 1.175 ± 0.068
5.814SerAsn: 5.814 ± 0.223
1.767SerPro: 1.767 ± 0.08
2.959SerGln: 2.959 ± 0.129
2.26SerArg: 2.26 ± 0.094
5.482SerSer: 5.482 ± 0.193
4.327SerThr: 4.327 ± 0.208
4.411SerVal: 4.411 ± 0.157
0.71SerTrp: 0.71 ± 0.05
2.928SerTyr: 2.928 ± 0.108
0.0SerXaa: 0.0 ± 0.0
Thr
2.837ThrAla: 2.837 ± 0.143
0.094ThrCys: 0.094 ± 0.02
2.701ThrAsp: 2.701 ± 0.127
2.827ThrGlu: 2.827 ± 0.11
2.673ThrPhe: 2.673 ± 0.082
3.085ThrGly: 3.085 ± 0.123
0.843ThrHis: 0.843 ± 0.054
5.506ThrIle: 5.506 ± 0.18
4.841ThrLys: 4.841 ± 0.147
5.695ThrLeu: 5.695 ± 0.18
0.882ThrMet: 0.882 ± 0.068
4.429ThrAsn: 4.429 ± 0.188
1.875ThrPro: 1.875 ± 0.111
1.816ThrGln: 1.816 ± 0.102
1.609ThrArg: 1.609 ± 0.086
4.264ThrSer: 4.264 ± 0.149
3.747ThrThr: 3.747 ± 0.21
3.586ThrVal: 3.586 ± 0.172
0.567ThrTrp: 0.567 ± 0.046
2.27ThrTyr: 2.27 ± 0.099
0.0ThrXaa: 0.0 ± 0.0
Val
4.187ValAla: 4.187 ± 0.123
0.126ValCys: 0.126 ± 0.022
3.757ValAsp: 3.757 ± 0.141
4.054ValGlu: 4.054 ± 0.127
3.253ValPhe: 3.253 ± 0.143
3.236ValGly: 3.236 ± 0.123
0.805ValHis: 0.805 ± 0.056
5.226ValIle: 5.226 ± 0.163
4.943ValLys: 4.943 ± 0.15
4.918ValLeu: 4.918 ± 0.148
1.039ValMet: 1.039 ± 0.074
4.236ValAsn: 4.236 ± 0.129
1.585ValPro: 1.585 ± 0.081
1.536ValGln: 1.536 ± 0.074
1.676ValArg: 1.676 ± 0.08
4.646ValSer: 4.646 ± 0.144
3.673ValThr: 3.673 ± 0.191
3.775ValVal: 3.775 ± 0.129
0.43ValTrp: 0.43 ± 0.039
1.861ValTyr: 1.861 ± 0.071
0.0ValXaa: 0.0 ± 0.0
Trp
0.483TrpAla: 0.483 ± 0.042
0.021TrpCys: 0.021 ± 0.009
0.469TrpAsp: 0.469 ± 0.037
0.514TrpGlu: 0.514 ± 0.045
0.644TrpPhe: 0.644 ± 0.049
0.416TrpGly: 0.416 ± 0.037
0.108TrpHis: 0.108 ± 0.021
1.077TrpIle: 1.077 ± 0.064
0.871TrpLys: 0.871 ± 0.062
0.882TrpLeu: 0.882 ± 0.053
0.234TrpMet: 0.234 ± 0.031
0.878TrpAsn: 0.878 ± 0.056
0.199TrpPro: 0.199 ± 0.026
0.294TrpGln: 0.294 ± 0.03
0.234TrpArg: 0.234 ± 0.032
0.71TrpSer: 0.71 ± 0.053
0.584TrpThr: 0.584 ± 0.051
0.504TrpVal: 0.504 ± 0.049
0.119TrpTrp: 0.119 ± 0.021
0.36TrpTyr: 0.36 ± 0.036
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.001TyrAla: 2.001 ± 0.075
0.108TyrCys: 0.108 ± 0.024
2.249TyrAsp: 2.249 ± 0.097
2.543TyrGlu: 2.543 ± 0.104
2.729TyrPhe: 2.729 ± 0.107
1.882TyrGly: 1.882 ± 0.076
0.539TyrHis: 0.539 ± 0.044
3.236TyrIle: 3.236 ± 0.128
3.446TyrLys: 3.446 ± 0.131
4.1TyrLeu: 4.1 ± 0.139
0.574TyrMet: 0.574 ± 0.052
2.683TyrAsn: 2.683 ± 0.11
1.235TyrPro: 1.235 ± 0.062
1.511TyrGln: 1.511 ± 0.069
1.452TyrArg: 1.452 ± 0.071
3.243TyrSer: 3.243 ± 0.133
1.952TyrThr: 1.952 ± 0.085
2.239TyrVal: 2.239 ± 0.097
0.458TyrTrp: 0.458 ± 0.042
1.739TyrTyr: 1.739 ± 0.094
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 783 proteins (285863 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