Amino acid dipepetide frequency for Clostridium sp. CAG:288

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
3.275AlaAla: 3.275 ± 0.12
0.843AlaCys: 0.843 ± 0.052
2.997AlaAsp: 2.997 ± 0.085
3.058AlaGlu: 3.058 ± 0.096
2.835AlaPhe: 2.835 ± 0.096
3.189AlaGly: 3.189 ± 0.096
0.828AlaHis: 0.828 ± 0.041
5.543AlaIle: 5.543 ± 0.113
5.097AlaLys: 5.097 ± 0.117
6.1AlaLeu: 6.1 ± 0.128
1.407AlaMet: 1.407 ± 0.055
3.306AlaAsn: 3.306 ± 0.073
1.503AlaPro: 1.503 ± 0.057
1.458AlaGln: 1.458 ± 0.061
1.984AlaArg: 1.984 ± 0.06
4.111AlaSer: 4.111 ± 0.094
3.115AlaThr: 3.115 ± 0.097
3.565AlaVal: 3.565 ± 0.103
0.354AlaTrp: 0.354 ± 0.029
2.68AlaTyr: 2.68 ± 0.075
0.0AlaXaa: 0.0 ± 0.0
Cys
0.583CysAla: 0.583 ± 0.038
0.231CysCys: 0.231 ± 0.026
0.757CysAsp: 0.757 ± 0.041
0.603CysGlu: 0.603 ± 0.034
0.642CysPhe: 0.642 ± 0.034
1.064CysGly: 1.064 ± 0.054
0.26CysHis: 0.26 ± 0.026
0.849CysIle: 0.849 ± 0.047
0.914CysLys: 0.914 ± 0.043
1.152CysLeu: 1.152 ± 0.057
0.207CysMet: 0.207 ± 0.02
0.657CysAsn: 0.657 ± 0.042
0.518CysPro: 0.518 ± 0.038
0.25CysGln: 0.25 ± 0.023
0.35CysArg: 0.35 ± 0.024
0.978CysSer: 0.978 ± 0.045
0.64CysThr: 0.64 ± 0.034
0.732CysVal: 0.732 ± 0.04
0.07CysTrp: 0.07 ± 0.012
0.653CysTyr: 0.653 ± 0.039
0.0CysXaa: 0.0 ± 0.0
Asp
3.256AspAla: 3.256 ± 0.09
0.724AspCys: 0.724 ± 0.047
3.535AspAsp: 3.535 ± 0.101
4.877AspGlu: 4.877 ± 0.117
2.964AspPhe: 2.964 ± 0.069
3.825AspGly: 3.825 ± 0.106
0.765AspHis: 0.765 ± 0.04
4.995AspIle: 4.995 ± 0.112
5.196AspLys: 5.196 ± 0.108
5.355AspLeu: 5.355 ± 0.114
1.342AspMet: 1.342 ± 0.054
3.492AspAsn: 3.492 ± 0.1
1.551AspPro: 1.551 ± 0.06
1.201AspGln: 1.201 ± 0.049
1.786AspArg: 1.786 ± 0.059
4.592AspSer: 4.592 ± 0.108
2.839AspThr: 2.839 ± 0.074
3.794AspVal: 3.794 ± 0.096
0.409AspTrp: 0.409 ± 0.035
3.608AspTyr: 3.608 ± 0.11
0.0AspXaa: 0.0 ± 0.0
Glu
3.891GluAla: 3.891 ± 0.12
0.708GluCys: 0.708 ± 0.037
3.541GluAsp: 3.541 ± 0.081
5.265GluGlu: 5.265 ± 0.125
2.737GluPhe: 2.737 ± 0.076
3.404GluGly: 3.404 ± 0.095
0.927GluHis: 0.927 ± 0.046
6.155GluIle: 6.155 ± 0.127
6.39GluLys: 6.39 ± 0.125
6.122GluLeu: 6.122 ± 0.129
1.718GluMet: 1.718 ± 0.062
4.711GluAsn: 4.711 ± 0.109
1.416GluPro: 1.416 ± 0.06
1.551GluGln: 1.551 ± 0.069
2.217GluArg: 2.217 ± 0.075
3.764GluSer: 3.764 ± 0.093
3.377GluThr: 3.377 ± 0.083
4.277GluVal: 4.277 ± 0.098
0.36GluTrp: 0.36 ± 0.026
3.306GluTyr: 3.306 ± 0.094
0.0GluXaa: 0.0 ± 0.0
Phe
2.827PheAla: 2.827 ± 0.088
0.587PheCys: 0.587 ± 0.033
3.477PheAsp: 3.477 ± 0.089
3.085PheGlu: 3.085 ± 0.081
2.301PhePhe: 2.301 ± 0.078
2.921PheGly: 2.921 ± 0.087
0.513PheHis: 0.513 ± 0.032
4.367PheIle: 4.367 ± 0.106
3.983PheLys: 3.983 ± 0.086
4.075PheLeu: 4.075 ± 0.109
0.982PheMet: 0.982 ± 0.045
3.175PheAsn: 3.175 ± 0.087
1.133PhePro: 1.133 ± 0.044
0.931PheGln: 0.931 ± 0.047
1.233PheArg: 1.233 ± 0.059
3.539PheSer: 3.539 ± 0.095
2.565PheThr: 2.565 ± 0.089
3.308PheVal: 3.308 ± 0.092
0.286PheTrp: 0.286 ± 0.027
2.283PheTyr: 2.283 ± 0.069
0.0PheXaa: 0.0 ± 0.0
Gly
3.498GlyAla: 3.498 ± 0.11
0.814GlyCys: 0.814 ± 0.042
3.117GlyAsp: 3.117 ± 0.084
3.334GlyGlu: 3.334 ± 0.087
2.88GlyPhe: 2.88 ± 0.079
3.604GlyGly: 3.604 ± 0.103
1.027GlyHis: 1.027 ± 0.055
4.829GlyIle: 4.829 ± 0.111
4.981GlyLys: 4.981 ± 0.12
5.365GlyLeu: 5.365 ± 0.126
1.285GlyMet: 1.285 ± 0.054
3.04GlyAsn: 3.04 ± 0.088
1.143GlyPro: 1.143 ± 0.046
1.608GlyGln: 1.608 ± 0.056
1.911GlyArg: 1.911 ± 0.074
3.919GlySer: 3.919 ± 0.112
3.702GlyThr: 3.702 ± 0.103
4.091GlyVal: 4.091 ± 0.098
0.505GlyTrp: 0.505 ± 0.035
3.095GlyTyr: 3.095 ± 0.082
0.0GlyXaa: 0.0 ± 0.0
His
0.755HisAla: 0.755 ± 0.04
0.209HisCys: 0.209 ± 0.024
0.841HisAsp: 0.841 ± 0.044
0.878HisGlu: 0.878 ± 0.046
0.738HisPhe: 0.738 ± 0.042
0.939HisGly: 0.939 ± 0.052
0.319HisHis: 0.319 ± 0.034
1.258HisIle: 1.258 ± 0.049
1.07HisLys: 1.07 ± 0.049
1.325HisLeu: 1.325 ± 0.054
0.311HisMet: 0.311 ± 0.025
0.777HisAsn: 0.777 ± 0.04
0.622HisPro: 0.622 ± 0.044
0.395HisGln: 0.395 ± 0.031
0.45HisArg: 0.45 ± 0.03
0.867HisSer: 0.867 ± 0.039
0.751HisThr: 0.751 ± 0.042
0.857HisVal: 0.857 ± 0.049
0.088HisTrp: 0.088 ± 0.013
0.683HisTyr: 0.683 ± 0.035
0.0HisXaa: 0.0 ± 0.0
Ile
5.535IleAla: 5.535 ± 0.118
1.113IleCys: 1.113 ± 0.05
6.257IleAsp: 6.257 ± 0.126
5.723IleGlu: 5.723 ± 0.11
3.831IlePhe: 3.831 ± 0.118
4.975IleGly: 4.975 ± 0.121
1.152IleHis: 1.152 ± 0.049
7.253IleIle: 7.253 ± 0.156
7.708IleLys: 7.708 ± 0.158
7.112IleLeu: 7.112 ± 0.145
1.841IleMet: 1.841 ± 0.067
5.854IleAsn: 5.854 ± 0.127
2.802IlePro: 2.802 ± 0.092
1.761IleGln: 1.761 ± 0.065
2.6IleArg: 2.6 ± 0.072
7.01IleSer: 7.01 ± 0.128
4.993IleThr: 4.993 ± 0.119
6.233IleVal: 6.233 ± 0.122
0.477IleTrp: 0.477 ± 0.035
3.884IleTyr: 3.884 ± 0.094
0.0IleXaa: 0.0 ± 0.0
Lys
5.085LysAla: 5.085 ± 0.123
0.857LysCys: 0.857 ± 0.042
5.957LysAsp: 5.957 ± 0.1
7.763LysGlu: 7.763 ± 0.132
3.105LysPhe: 3.105 ± 0.09
4.069LysGly: 4.069 ± 0.103
1.186LysHis: 1.186 ± 0.048
7.215LysIle: 7.215 ± 0.133
8.11LysLys: 8.11 ± 0.18
7.143LysLeu: 7.143 ± 0.154
2.262LysMet: 2.262 ± 0.068
5.852LysAsn: 5.852 ± 0.137
2.103LysPro: 2.103 ± 0.075
2.207LysGln: 2.207 ± 0.064
3.001LysArg: 3.001 ± 0.081
4.977LysSer: 4.977 ± 0.118
4.964LysThr: 4.964 ± 0.095
5.805LysVal: 5.805 ± 0.111
0.503LysTrp: 0.503 ± 0.03
4.739LysTyr: 4.739 ± 0.1
0.0LysXaa: 0.0 ± 0.0
Leu
5.732LeuAla: 5.732 ± 0.137
1.033LeuCys: 1.033 ± 0.037
5.775LeuAsp: 5.775 ± 0.127
5.402LeuGlu: 5.402 ± 0.125
4.633LeuPhe: 4.633 ± 0.115
5.243LeuGly: 5.243 ± 0.118
1.092LeuHis: 1.092 ± 0.05
7.992LeuIle: 7.992 ± 0.173
8.213LeuLys: 8.213 ± 0.159
8.305LeuLeu: 8.305 ± 0.158
1.949LeuMet: 1.949 ± 0.076
5.967LeuAsn: 5.967 ± 0.127
2.964LeuPro: 2.964 ± 0.092
1.753LeuGln: 1.753 ± 0.062
2.776LeuArg: 2.776 ± 0.078
7.278LeuSer: 7.278 ± 0.146
5.611LeuThr: 5.611 ± 0.108
6.067LeuVal: 6.067 ± 0.108
0.489LeuTrp: 0.489 ± 0.029
3.715LeuTyr: 3.715 ± 0.095
0.0LeuXaa: 0.0 ± 0.0
Met
1.495MetAla: 1.495 ± 0.062
0.262MetCys: 0.262 ± 0.025
1.107MetAsp: 1.107 ± 0.049
1.28MetGlu: 1.28 ± 0.048
1.076MetPhe: 1.076 ± 0.047
1.131MetGly: 1.131 ± 0.051
0.319MetHis: 0.319 ± 0.025
1.861MetIle: 1.861 ± 0.061
2.244MetLys: 2.244 ± 0.076
2.056MetLeu: 2.056 ± 0.07
0.554MetMet: 0.554 ± 0.041
1.456MetAsn: 1.456 ± 0.058
0.812MetPro: 0.812 ± 0.044
0.526MetGln: 0.526 ± 0.032
0.759MetArg: 0.759 ± 0.04
1.585MetSer: 1.585 ± 0.056
1.264MetThr: 1.264 ± 0.05
1.256MetVal: 1.256 ± 0.056
0.143MetTrp: 0.143 ± 0.017
0.857MetTyr: 0.857 ± 0.041
0.0MetXaa: 0.0 ± 0.0
Asn
3.32AsnAla: 3.32 ± 0.082
0.777AsnCys: 0.777 ± 0.05
3.751AsnAsp: 3.751 ± 0.103
4.238AsnGlu: 4.238 ± 0.102
2.929AsnPhe: 2.929 ± 0.084
3.864AsnGly: 3.864 ± 0.104
0.935AsnHis: 0.935 ± 0.04
5.82AsnIle: 5.82 ± 0.125
5.74AsnLys: 5.74 ± 0.129
5.441AsnLeu: 5.441 ± 0.125
1.403AsnMet: 1.403 ± 0.053
4.643AsnAsn: 4.643 ± 0.125
2.068AsnPro: 2.068 ± 0.062
1.563AsnGln: 1.563 ± 0.057
1.816AsnArg: 1.816 ± 0.066
4.498AsnSer: 4.498 ± 0.111
3.105AsnThr: 3.105 ± 0.088
3.903AsnVal: 3.903 ± 0.097
0.415AsnTrp: 0.415 ± 0.031
3.518AsnTyr: 3.518 ± 0.105
0.0AsnXaa: 0.0 ± 0.0
Pro
1.299ProAla: 1.299 ± 0.049
0.28ProCys: 0.28 ± 0.027
1.587ProAsp: 1.587 ± 0.056
2.031ProGlu: 2.031 ± 0.072
1.557ProPhe: 1.557 ± 0.06
1.563ProGly: 1.563 ± 0.063
0.481ProHis: 0.481 ± 0.031
2.352ProIle: 2.352 ± 0.08
2.019ProLys: 2.019 ± 0.066
2.727ProLeu: 2.727 ± 0.089
0.567ProMet: 0.567 ± 0.036
1.757ProAsn: 1.757 ± 0.065
0.421ProPro: 0.421 ± 0.033
0.796ProGln: 0.796 ± 0.045
0.683ProArg: 0.683 ± 0.042
2.052ProSer: 2.052 ± 0.055
1.915ProThr: 1.915 ± 0.069
1.908ProVal: 1.908 ± 0.064
0.19ProTrp: 0.19 ± 0.019
1.411ProTyr: 1.411 ± 0.056
0.0ProXaa: 0.0 ± 0.0
Gln
1.485GlnAla: 1.485 ± 0.063
0.188GlnCys: 0.188 ± 0.021
1.231GlnAsp: 1.231 ± 0.052
1.544GlnGlu: 1.544 ± 0.056
1.053GlnPhe: 1.053 ± 0.052
1.148GlnGly: 1.148 ± 0.047
0.272GlnHis: 0.272 ± 0.025
2.232GlnIle: 2.232 ± 0.071
2.166GlnLys: 2.166 ± 0.073
2.095GlnLeu: 2.095 ± 0.06
0.62GlnMet: 0.62 ± 0.043
1.479GlnAsn: 1.479 ± 0.056
0.548GlnPro: 0.548 ± 0.037
0.673GlnGln: 0.673 ± 0.043
0.837GlnArg: 0.837 ± 0.045
1.391GlnSer: 1.391 ± 0.053
1.315GlnThr: 1.315 ± 0.053
1.551GlnVal: 1.551 ± 0.058
0.147GlnTrp: 0.147 ± 0.016
1.135GlnTyr: 1.135 ± 0.057
0.0GlnXaa: 0.0 ± 0.0
Arg
1.716ArgAla: 1.716 ± 0.062
0.368ArgCys: 0.368 ± 0.028
1.52ArgAsp: 1.52 ± 0.066
2.054ArgGlu: 2.054 ± 0.071
1.499ArgPhe: 1.499 ± 0.059
1.573ArgGly: 1.573 ± 0.058
0.528ArgHis: 0.528 ± 0.035
2.753ArgIle: 2.753 ± 0.075
2.986ArgLys: 2.986 ± 0.08
2.941ArgLeu: 2.941 ± 0.085
0.804ArgMet: 0.804 ± 0.04
1.831ArgAsn: 1.831 ± 0.064
0.892ArgPro: 0.892 ± 0.045
0.931ArgGln: 0.931 ± 0.046
1.35ArgArg: 1.35 ± 0.06
1.718ArgSer: 1.718 ± 0.056
1.647ArgThr: 1.647 ± 0.056
2.082ArgVal: 2.082 ± 0.07
0.192ArgTrp: 0.192 ± 0.017
1.548ArgTyr: 1.548 ± 0.061
0.0ArgXaa: 0.0 ± 0.0
Ser
3.471SerAla: 3.471 ± 0.101
0.869SerCys: 0.869 ± 0.045
4.091SerAsp: 4.091 ± 0.096
4.111SerGlu: 4.111 ± 0.084
3.927SerPhe: 3.927 ± 0.096
4.289SerGly: 4.289 ± 0.096
0.986SerHis: 0.986 ± 0.046
6.613SerIle: 6.613 ± 0.152
5.842SerLys: 5.842 ± 0.116
7.589SerLeu: 7.589 ± 0.132
1.35SerMet: 1.35 ± 0.048
4.893SerAsn: 4.893 ± 0.115
1.679SerPro: 1.679 ± 0.062
1.54SerGln: 1.54 ± 0.058
1.921SerArg: 1.921 ± 0.067
6.908SerSer: 6.908 ± 0.338
4.433SerThr: 4.433 ± 0.154
4.287SerVal: 4.287 ± 0.109
0.505SerTrp: 0.505 ± 0.032
3.545SerTyr: 3.545 ± 0.114
0.0SerXaa: 0.0 ± 0.0
Thr
3.015ThrAla: 3.015 ± 0.094
0.608ThrCys: 0.608 ± 0.034
2.911ThrAsp: 2.911 ± 0.085
3.021ThrGlu: 3.021 ± 0.077
2.995ThrPhe: 2.995 ± 0.086
3.463ThrGly: 3.463 ± 0.104
0.943ThrHis: 0.943 ± 0.048
5.646ThrIle: 5.646 ± 0.114
4.347ThrLys: 4.347 ± 0.11
5.662ThrLeu: 5.662 ± 0.091
1.066ThrMet: 1.066 ± 0.044
3.561ThrAsn: 3.561 ± 0.1
2.074ThrPro: 2.074 ± 0.065
1.262ThrGln: 1.262 ± 0.05
1.589ThrArg: 1.589 ± 0.058
4.42ThrSer: 4.42 ± 0.156
3.551ThrThr: 3.551 ± 0.123
3.428ThrVal: 3.428 ± 0.132
0.378ThrTrp: 0.378 ± 0.03
3.027ThrTyr: 3.027 ± 0.096
0.0ThrXaa: 0.0 ± 0.0
Val
3.868ValAla: 3.868 ± 0.097
0.851ValCys: 0.851 ± 0.049
4.04ValAsp: 4.04 ± 0.089
4.052ValGlu: 4.052 ± 0.104
3.013ValPhe: 3.013 ± 0.079
4.118ValGly: 4.118 ± 0.101
0.783ValHis: 0.783 ± 0.043
5.92ValIle: 5.92 ± 0.12
5.525ValLys: 5.525 ± 0.112
5.891ValLeu: 5.891 ± 0.114
1.328ValMet: 1.328 ± 0.061
3.7ValAsn: 3.7 ± 0.09
1.769ValPro: 1.769 ± 0.062
1.321ValGln: 1.321 ± 0.055
1.88ValArg: 1.88 ± 0.064
5.112ValSer: 5.112 ± 0.122
4.177ValThr: 4.177 ± 0.125
4.424ValVal: 4.424 ± 0.122
0.376ValTrp: 0.376 ± 0.027
2.927ValTyr: 2.927 ± 0.082
0.0ValXaa: 0.0 ± 0.0
Trp
0.397TrpAla: 0.397 ± 0.031
0.119TrpCys: 0.119 ± 0.014
0.284TrpAsp: 0.284 ± 0.025
0.307TrpGlu: 0.307 ± 0.025
0.362TrpPhe: 0.362 ± 0.031
0.397TrpGly: 0.397 ± 0.03
0.131TrpHis: 0.131 ± 0.016
0.526TrpIle: 0.526 ± 0.032
0.475TrpLys: 0.475 ± 0.031
0.655TrpLeu: 0.655 ± 0.04
0.176TrpMet: 0.176 ± 0.019
0.44TrpAsn: 0.44 ± 0.035
0.17TrpPro: 0.17 ± 0.018
0.166TrpGln: 0.166 ± 0.019
0.217TrpArg: 0.217 ± 0.021
0.385TrpSer: 0.385 ± 0.03
0.403TrpThr: 0.403 ± 0.03
0.311TrpVal: 0.311 ± 0.024
0.084TrpTrp: 0.084 ± 0.015
0.313TrpTyr: 0.313 ± 0.03
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.747TyrAla: 2.747 ± 0.078
0.667TyrCys: 0.667 ± 0.041
3.33TyrAsp: 3.33 ± 0.096
3.207TyrGlu: 3.207 ± 0.092
2.491TyrPhe: 2.491 ± 0.083
2.972TyrGly: 2.972 ± 0.087
0.685TyrHis: 0.685 ± 0.034
3.936TyrIle: 3.936 ± 0.099
3.901TyrLys: 3.901 ± 0.102
4.877TyrLeu: 4.877 ± 0.118
0.871TyrMet: 0.871 ± 0.042
3.158TyrAsn: 3.158 ± 0.094
1.407TyrPro: 1.407 ± 0.054
1.219TyrGln: 1.219 ± 0.046
1.575TyrArg: 1.575 ± 0.064
3.747TyrSer: 3.747 ± 0.107
2.6TyrThr: 2.6 ± 0.107
3.195TyrVal: 3.195 ± 0.093
0.342TyrTrp: 0.342 ± 0.027
2.671TyrTyr: 2.671 ± 0.093
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 1500 proteins (488874 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