Amino acid dipepetide frequency for bacterium AMD02

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
9.337AlaAla: 9.337 ± 0.25
0.342AlaCys: 0.342 ± 0.039
4.555AlaAsp: 4.555 ± 0.165
5.112AlaGlu: 5.112 ± 0.157
3.128AlaPhe: 3.128 ± 0.119
6.535AlaGly: 6.535 ± 0.169
1.676AlaHis: 1.676 ± 0.094
6.083AlaIle: 6.083 ± 0.19
5.534AlaLys: 5.534 ± 0.17
8.654AlaLeu: 8.654 ± 0.209
2.039AlaMet: 2.039 ± 0.095
3.512AlaAsn: 3.512 ± 0.149
3.263AlaPro: 3.263 ± 0.163
3.284AlaGln: 3.284 ± 0.139
4.5AlaArg: 4.5 ± 0.147
5.939AlaSer: 5.939 ± 0.201
6.036AlaThr: 6.036 ± 0.195
6.657AlaVal: 6.657 ± 0.184
0.836AlaTrp: 0.836 ± 0.053
2.685AlaTyr: 2.685 ± 0.108
0.0AlaXaa: 0.0 ± 0.0
Cys
0.262CysAla: 0.262 ± 0.036
0.025CysCys: 0.025 ± 0.01
0.253CysAsp: 0.253 ± 0.031
0.203CysGlu: 0.203 ± 0.032
0.16CysPhe: 0.16 ± 0.023
0.435CysGly: 0.435 ± 0.042
0.11CysHis: 0.11 ± 0.026
0.274CysIle: 0.274 ± 0.034
0.215CysLys: 0.215 ± 0.038
0.321CysLeu: 0.321 ± 0.041
0.08CysMet: 0.08 ± 0.018
0.148CysAsn: 0.148 ± 0.027
0.279CysPro: 0.279 ± 0.04
0.11CysGln: 0.11 ± 0.02
0.211CysArg: 0.211 ± 0.039
0.308CysSer: 0.308 ± 0.039
0.329CysThr: 0.329 ± 0.04
0.295CysVal: 0.295 ± 0.035
0.08CysTrp: 0.08 ± 0.032
0.135CysTyr: 0.135 ± 0.023
0.0CysXaa: 0.0 ± 0.0
Asp
4.825AspAla: 4.825 ± 0.166
0.194AspCys: 0.194 ± 0.03
3.234AspAsp: 3.234 ± 0.17
3.913AspGlu: 3.913 ± 0.147
2.385AspPhe: 2.385 ± 0.103
4.15AspGly: 4.15 ± 0.144
1.043AspHis: 1.043 ± 0.066
4.112AspIle: 4.112 ± 0.124
2.904AspLys: 2.904 ± 0.109
4.513AspLeu: 4.513 ± 0.145
1.203AspMet: 1.203 ± 0.077
1.997AspAsn: 1.997 ± 0.101
2.41AspPro: 2.41 ± 0.115
2.022AspGln: 2.022 ± 0.092
2.634AspArg: 2.634 ± 0.109
2.968AspSer: 2.968 ± 0.122
3.643AspThr: 3.643 ± 0.145
4.158AspVal: 4.158 ± 0.138
0.625AspTrp: 0.625 ± 0.049
1.878AspTyr: 1.878 ± 0.1
0.0AspXaa: 0.0 ± 0.0
Glu
5.255GluAla: 5.255 ± 0.191
0.224GluCys: 0.224 ± 0.032
2.655GluAsp: 2.655 ± 0.117
3.293GluGlu: 3.293 ± 0.163
2.077GluPhe: 2.077 ± 0.095
3.014GluGly: 3.014 ± 0.126
1.33GluHis: 1.33 ± 0.07
4.099GluIle: 4.099 ± 0.155
4.2GluLys: 4.2 ± 0.173
6.404GluLeu: 6.404 ± 0.199
1.262GluMet: 1.262 ± 0.076
2.102GluAsn: 2.102 ± 0.098
1.857GluPro: 1.857 ± 0.089
2.52GluGln: 2.52 ± 0.119
3.533GluArg: 3.533 ± 0.141
2.963GluSer: 2.963 ± 0.116
3.314GluThr: 3.314 ± 0.122
4.175GluVal: 4.175 ± 0.152
0.578GluTrp: 0.578 ± 0.052
1.988GluTyr: 1.988 ± 0.103
0.0GluXaa: 0.0 ± 0.0
Phe
3.335PheAla: 3.335 ± 0.105
0.182PheCys: 0.182 ± 0.03
2.355PheAsp: 2.355 ± 0.113
2.212PheGlu: 2.212 ± 0.104
1.57PhePhe: 1.57 ± 0.081
3.073PheGly: 3.073 ± 0.122
0.722PheHis: 0.722 ± 0.057
2.87PheIle: 2.87 ± 0.127
1.942PheLys: 1.942 ± 0.089
2.98PheLeu: 2.98 ± 0.108
0.929PheMet: 0.929 ± 0.066
1.727PheAsn: 1.727 ± 0.077
1.178PhePro: 1.178 ± 0.076
1.14PheGln: 1.14 ± 0.08
1.541PheArg: 1.541 ± 0.088
2.453PheSer: 2.453 ± 0.101
2.778PheThr: 2.778 ± 0.117
2.887PheVal: 2.887 ± 0.125
0.515PheTrp: 0.515 ± 0.052
1.355PheTyr: 1.355 ± 0.083
0.0PheXaa: 0.0 ± 0.0
Gly
5.61GlyAla: 5.61 ± 0.185
0.232GlyCys: 0.232 ± 0.034
3.656GlyAsp: 3.656 ± 0.143
3.584GlyGlu: 3.584 ± 0.116
2.786GlyPhe: 2.786 ± 0.109
5.108GlyGly: 5.108 ± 0.193
1.363GlyHis: 1.363 ± 0.082
5.108GlyIle: 5.108 ± 0.164
4.272GlyLys: 4.272 ± 0.13
6.509GlyLeu: 6.509 ± 0.17
1.634GlyMet: 1.634 ± 0.087
2.87GlyAsn: 2.87 ± 0.125
1.802GlyPro: 1.802 ± 0.072
2.583GlyGln: 2.583 ± 0.105
3.525GlyArg: 3.525 ± 0.143
4.491GlySer: 4.491 ± 0.16
4.935GlyThr: 4.935 ± 0.173
5.661GlyVal: 5.661 ± 0.149
0.891GlyTrp: 0.891 ± 0.076
2.571GlyTyr: 2.571 ± 0.119
0.0GlyXaa: 0.0 ± 0.0
His
1.558HisAla: 1.558 ± 0.095
0.089HisCys: 0.089 ± 0.016
1.161HisAsp: 1.161 ± 0.069
1.271HisGlu: 1.271 ± 0.078
0.781HisPhe: 0.781 ± 0.071
1.372HisGly: 1.372 ± 0.082
0.633HisHis: 0.633 ± 0.052
1.524HisIle: 1.524 ± 0.077
0.971HisLys: 0.971 ± 0.073
1.916HisLeu: 1.916 ± 0.096
0.414HisMet: 0.414 ± 0.039
0.836HisAsn: 0.836 ± 0.057
0.979HisPro: 0.979 ± 0.058
0.76HisGln: 0.76 ± 0.06
1.013HisArg: 1.013 ± 0.067
1.262HisSer: 1.262 ± 0.079
1.296HisThr: 1.296 ± 0.074
1.389HisVal: 1.389 ± 0.083
0.215HisTrp: 0.215 ± 0.032
0.777HisTyr: 0.777 ± 0.063
0.0HisXaa: 0.0 ± 0.0
Ile
7.18IleAla: 7.18 ± 0.161
0.325IleCys: 0.325 ± 0.035
4.715IleAsp: 4.715 ± 0.139
4.656IleGlu: 4.656 ± 0.185
2.482IlePhe: 2.482 ± 0.108
5.374IleGly: 5.374 ± 0.165
1.347IleHis: 1.347 ± 0.079
5.792IleIle: 5.792 ± 0.194
3.744IleLys: 3.744 ± 0.124
5.965IleLeu: 5.965 ± 0.187
1.486IleMet: 1.486 ± 0.086
3.098IleAsn: 3.098 ± 0.12
2.849IlePro: 2.849 ± 0.116
2.081IleGln: 2.081 ± 0.076
3.364IleArg: 3.364 ± 0.11
4.276IleSer: 4.276 ± 0.14
4.804IleThr: 4.804 ± 0.151
5.526IleVal: 5.526 ± 0.158
0.599IleTrp: 0.599 ± 0.053
1.874IleTyr: 1.874 ± 0.09
0.0IleXaa: 0.0 ± 0.0
Lys
4.935LysAla: 4.935 ± 0.158
0.152LysCys: 0.152 ± 0.025
3.508LysAsp: 3.508 ± 0.149
3.546LysGlu: 3.546 ± 0.147
1.634LysPhe: 1.634 ± 0.08
3.436LysGly: 3.436 ± 0.123
1.195LysHis: 1.195 ± 0.081
4.01LysIle: 4.01 ± 0.131
4.943LysLys: 4.943 ± 0.172
5.462LysLeu: 5.462 ± 0.167
1.52LysMet: 1.52 ± 0.07
3.001LysAsn: 3.001 ± 0.126
2.229LysPro: 2.229 ± 0.1
2.486LysGln: 2.486 ± 0.095
3.284LysArg: 3.284 ± 0.121
3.491LysSer: 3.491 ± 0.115
4.162LysThr: 4.162 ± 0.142
3.943LysVal: 3.943 ± 0.147
0.523LysTrp: 0.523 ± 0.042
1.722LysTyr: 1.722 ± 0.097
0.0LysXaa: 0.0 ± 0.0
Leu
8.565LeuAla: 8.565 ± 0.194
0.401LeuCys: 0.401 ± 0.042
5.091LeuAsp: 5.091 ± 0.139
5.218LeuGlu: 5.218 ± 0.154
3.618LeuPhe: 3.618 ± 0.149
6.247LeuGly: 6.247 ± 0.178
1.992LeuHis: 1.992 ± 0.098
6.294LeuIle: 6.294 ± 0.196
5.272LeuLys: 5.272 ± 0.169
8.607LeuLeu: 8.607 ± 0.246
2.128LeuMet: 2.128 ± 0.095
3.651LeuAsn: 3.651 ± 0.123
4.297LeuPro: 4.297 ± 0.126
3.533LeuGln: 3.533 ± 0.104
5.133LeuArg: 5.133 ± 0.175
6.64LeuSer: 6.64 ± 0.174
5.922LeuThr: 5.922 ± 0.183
6.691LeuVal: 6.691 ± 0.186
0.857LeuTrp: 0.857 ± 0.065
2.626LeuTyr: 2.626 ± 0.11
0.0LeuXaa: 0.0 ± 0.0
Met
1.963MetAla: 1.963 ± 0.09
0.076MetCys: 0.076 ± 0.021
0.95MetAsp: 0.95 ± 0.07
0.908MetGlu: 0.908 ± 0.064
0.701MetPhe: 0.701 ± 0.055
1.325MetGly: 1.325 ± 0.066
0.393MetHis: 0.393 ± 0.039
1.499MetIle: 1.499 ± 0.075
1.456MetLys: 1.456 ± 0.076
2.018MetLeu: 2.018 ± 0.101
0.494MetMet: 0.494 ± 0.04
1.161MetAsn: 1.161 ± 0.077
0.958MetPro: 0.958 ± 0.059
0.908MetGln: 0.908 ± 0.068
1.304MetArg: 1.304 ± 0.08
1.705MetSer: 1.705 ± 0.082
1.731MetThr: 1.731 ± 0.073
1.287MetVal: 1.287 ± 0.083
0.169MetTrp: 0.169 ± 0.027
0.675MetTyr: 0.675 ± 0.055
0.0MetXaa: 0.0 ± 0.0
Asn
3.673AsnAla: 3.673 ± 0.141
0.245AsnCys: 0.245 ± 0.039
2.385AsnAsp: 2.385 ± 0.103
2.326AsnGlu: 2.326 ± 0.108
1.524AsnPhe: 1.524 ± 0.081
3.145AsnGly: 3.145 ± 0.144
0.735AsnHis: 0.735 ± 0.061
2.98AsnIle: 2.98 ± 0.122
2.478AsnLys: 2.478 ± 0.119
3.711AsnLeu: 3.711 ± 0.135
0.819AsnMet: 0.819 ± 0.058
2.208AsnAsn: 2.208 ± 0.138
2.115AsnPro: 2.115 ± 0.098
1.651AsnGln: 1.651 ± 0.1
1.997AsnArg: 1.997 ± 0.095
2.474AsnSer: 2.474 ± 0.141
2.697AsnThr: 2.697 ± 0.154
3.145AsnVal: 3.145 ± 0.115
0.549AsnTrp: 0.549 ± 0.056
1.338AsnTyr: 1.338 ± 0.079
0.0AsnXaa: 0.0 ± 0.0
Pro
3.571ProAla: 3.571 ± 0.155
0.135ProCys: 0.135 ± 0.029
2.343ProAsp: 2.343 ± 0.091
2.744ProGlu: 2.744 ± 0.118
1.575ProPhe: 1.575 ± 0.082
2.681ProGly: 2.681 ± 0.121
0.937ProHis: 0.937 ± 0.064
2.794ProIle: 2.794 ± 0.111
2.469ProLys: 2.469 ± 0.116
3.44ProLeu: 3.44 ± 0.124
0.637ProMet: 0.637 ± 0.045
1.743ProAsn: 1.743 ± 0.089
1.469ProPro: 1.469 ± 0.108
1.579ProGln: 1.579 ± 0.082
1.608ProArg: 1.608 ± 0.091
2.685ProSer: 2.685 ± 0.116
3.077ProThr: 3.077 ± 0.133
3.318ProVal: 3.318 ± 0.134
0.376ProTrp: 0.376 ± 0.036
1.148ProTyr: 1.148 ± 0.074
0.0ProXaa: 0.0 ± 0.0
Gln
3.795GlnAla: 3.795 ± 0.128
0.093GlnCys: 0.093 ± 0.023
1.621GlnAsp: 1.621 ± 0.082
1.891GlnGlu: 1.891 ± 0.091
1.41GlnPhe: 1.41 ± 0.068
1.967GlnGly: 1.967 ± 0.084
0.743GlnHis: 0.743 ± 0.055
2.419GlnIle: 2.419 ± 0.116
2.385GlnLys: 2.385 ± 0.092
4.103GlnLeu: 4.103 ± 0.136
0.735GlnMet: 0.735 ± 0.061
1.545GlnAsn: 1.545 ± 0.091
1.857GlnPro: 1.857 ± 0.101
1.828GlnGln: 1.828 ± 0.103
2.157GlnArg: 2.157 ± 0.102
2.461GlnSer: 2.461 ± 0.102
2.469GlnThr: 2.469 ± 0.092
2.583GlnVal: 2.583 ± 0.11
0.435GlnTrp: 0.435 ± 0.044
1.355GlnTyr: 1.355 ± 0.074
0.0GlnXaa: 0.0 ± 0.0
Arg
4.128ArgAla: 4.128 ± 0.13
0.215ArgCys: 0.215 ± 0.031
2.866ArgAsp: 2.866 ± 0.134
3.086ArgGlu: 3.086 ± 0.116
2.144ArgPhe: 2.144 ± 0.086
2.942ArgGly: 2.942 ± 0.111
1.296ArgHis: 1.296 ± 0.068
3.423ArgIle: 3.423 ± 0.123
2.82ArgLys: 2.82 ± 0.124
5.306ArgLeu: 5.306 ± 0.162
1.262ArgMet: 1.262 ± 0.072
1.988ArgAsn: 1.988 ± 0.093
1.874ArgPro: 1.874 ± 0.099
2.301ArgGln: 2.301 ± 0.088
3.584ArgArg: 3.584 ± 0.152
3.28ArgSer: 3.28 ± 0.109
2.993ArgThr: 2.993 ± 0.115
3.364ArgVal: 3.364 ± 0.129
0.511ArgTrp: 0.511 ± 0.045
1.976ArgTyr: 1.976 ± 0.091
0.0ArgXaa: 0.0 ± 0.0
Ser
5.534SerAla: 5.534 ± 0.188
0.312SerCys: 0.312 ± 0.041
3.668SerAsp: 3.668 ± 0.139
3.309SerGlu: 3.309 ± 0.13
2.609SerPhe: 2.609 ± 0.107
5.268SerGly: 5.268 ± 0.181
1.292SerHis: 1.292 ± 0.08
4.352SerIle: 4.352 ± 0.138
3.478SerLys: 3.478 ± 0.129
5.745SerLeu: 5.745 ± 0.157
1.439SerMet: 1.439 ± 0.073
2.609SerAsn: 2.609 ± 0.122
2.647SerPro: 2.647 ± 0.11
2.562SerGln: 2.562 ± 0.103
3.234SerArg: 3.234 ± 0.128
4.593SerSer: 4.593 ± 0.202
4.247SerThr: 4.247 ± 0.165
4.778SerVal: 4.778 ± 0.148
0.718SerTrp: 0.718 ± 0.055
2.119SerTyr: 2.119 ± 0.09
0.0SerXaa: 0.0 ± 0.0
Thr
5.707ThrAla: 5.707 ± 0.195
0.308ThrCys: 0.308 ± 0.043
3.309ThrAsp: 3.309 ± 0.123
3.052ThrGlu: 3.052 ± 0.127
2.668ThrPhe: 2.668 ± 0.097
4.829ThrGly: 4.829 ± 0.174
1.233ThrHis: 1.233 ± 0.066
5.382ThrIle: 5.382 ± 0.157
3.888ThrLys: 3.888 ± 0.129
6.285ThrLeu: 6.285 ± 0.157
1.144ThrMet: 1.144 ± 0.073
3.094ThrAsn: 3.094 ± 0.151
3.647ThrPro: 3.647 ± 0.138
2.182ThrGln: 2.182 ± 0.109
2.752ThrArg: 2.752 ± 0.119
4.703ThrSer: 4.703 ± 0.166
5.272ThrThr: 5.272 ± 0.262
5.285ThrVal: 5.285 ± 0.175
0.718ThrTrp: 0.718 ± 0.06
2.448ThrTyr: 2.448 ± 0.126
0.0ThrXaa: 0.0 ± 0.0
Val
6.952ValAla: 6.952 ± 0.178
0.342ValCys: 0.342 ± 0.044
3.943ValAsp: 3.943 ± 0.129
4.179ValGlu: 4.179 ± 0.138
2.702ValPhe: 2.702 ± 0.121
5.247ValGly: 5.247 ± 0.16
1.241ValHis: 1.241 ± 0.072
5.787ValIle: 5.787 ± 0.178
3.879ValLys: 3.879 ± 0.132
6.767ValLeu: 6.767 ± 0.182
1.49ValMet: 1.49 ± 0.073
2.925ValAsn: 2.925 ± 0.133
2.989ValPro: 2.989 ± 0.122
2.453ValGln: 2.453 ± 0.113
3.597ValArg: 3.597 ± 0.122
5.066ValSer: 5.066 ± 0.141
5.631ValThr: 5.631 ± 0.162
6.366ValVal: 6.366 ± 0.199
0.844ValTrp: 0.844 ± 0.057
2.275ValTyr: 2.275 ± 0.104
0.0ValXaa: 0.0 ± 0.0
Trp
0.777TrpAla: 0.777 ± 0.069
0.072TrpCys: 0.072 ± 0.013
0.532TrpAsp: 0.532 ± 0.055
0.447TrpGlu: 0.447 ± 0.041
0.536TrpPhe: 0.536 ± 0.048
0.671TrpGly: 0.671 ± 0.052
0.274TrpHis: 0.274 ± 0.031
0.612TrpIle: 0.612 ± 0.058
0.502TrpLys: 0.502 ± 0.05
1.249TrpLeu: 1.249 ± 0.077
0.333TrpMet: 0.333 ± 0.036
0.456TrpAsn: 0.456 ± 0.043
0.388TrpPro: 0.388 ± 0.043
0.57TrpGln: 0.57 ± 0.057
0.675TrpArg: 0.675 ± 0.055
0.743TrpSer: 0.743 ± 0.056
0.549TrpThr: 0.549 ± 0.053
0.701TrpVal: 0.701 ± 0.048
0.22TrpTrp: 0.22 ± 0.029
0.388TrpTyr: 0.388 ± 0.047
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.744TyrAla: 2.744 ± 0.11
0.27TyrCys: 0.27 ± 0.048
2.009TyrAsp: 2.009 ± 0.088
1.895TyrGlu: 1.895 ± 0.105
1.254TyrPhe: 1.254 ± 0.069
2.372TyrGly: 2.372 ± 0.096
0.663TyrHis: 0.663 ± 0.057
2.123TyrIle: 2.123 ± 0.096
1.828TyrLys: 1.828 ± 0.091
2.828TyrLeu: 2.828 ± 0.11
0.629TyrMet: 0.629 ± 0.047
1.52TyrAsn: 1.52 ± 0.092
1.241TyrPro: 1.241 ± 0.073
1.304TyrGln: 1.304 ± 0.079
1.714TyrArg: 1.714 ± 0.079
2.014TyrSer: 2.014 ± 0.096
2.022TyrThr: 2.022 ± 0.109
2.465TyrVal: 2.465 ± 0.104
0.439TyrTrp: 0.439 ± 0.044
1.212TyrTyr: 1.212 ± 0.076
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 810 proteins (236896 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