Amino acid dipepetide frequency for Rhodovulum robiginosum

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
20.848AlaAla: 20.848 ± 0.225
1.155AlaCys: 1.155 ± 0.036
7.483AlaAsp: 7.483 ± 0.103
9.632AlaGlu: 9.632 ± 0.121
4.546AlaPhe: 4.546 ± 0.06
12.833AlaGly: 12.833 ± 0.136
2.604AlaHis: 2.604 ± 0.058
5.54AlaIle: 5.54 ± 0.085
3.213AlaLys: 3.213 ± 0.073
16.128AlaLeu: 16.128 ± 0.183
3.958AlaMet: 3.958 ± 0.058
2.451AlaAsn: 2.451 ± 0.055
7.378AlaPro: 7.378 ± 0.124
4.164AlaGln: 4.164 ± 0.067
11.07AlaArg: 11.07 ± 0.127
5.057AlaSer: 5.057 ± 0.071
5.851AlaThr: 5.851 ± 0.079
9.357AlaVal: 9.357 ± 0.106
1.662AlaTrp: 1.662 ± 0.041
2.679AlaTyr: 2.679 ± 0.052
0.0AlaXaa: 0.0 ± 0.0
Cys
1.139CysAla: 1.139 ± 0.036
0.106CysCys: 0.106 ± 0.011
0.59CysAsp: 0.59 ± 0.027
0.455CysGlu: 0.455 ± 0.02
0.31CysPhe: 0.31 ± 0.018
0.961CysGly: 0.961 ± 0.035
0.253CysHis: 0.253 ± 0.019
0.376CysIle: 0.376 ± 0.019
0.171CysLys: 0.171 ± 0.012
0.835CysLeu: 0.835 ± 0.025
0.168CysMet: 0.168 ± 0.013
0.22CysAsn: 0.22 ± 0.013
0.581CysPro: 0.581 ± 0.021
0.208CysGln: 0.208 ± 0.014
0.63CysArg: 0.63 ± 0.022
0.416CysSer: 0.416 ± 0.018
0.454CysThr: 0.454 ± 0.019
0.549CysVal: 0.549 ± 0.023
0.119CysTrp: 0.119 ± 0.01
0.21CysTyr: 0.21 ± 0.016
0.0CysXaa: 0.0 ± 0.0
Asp
7.626AspAla: 7.626 ± 0.089
0.524AspCys: 0.524 ± 0.023
3.584AspAsp: 3.584 ± 0.101
3.672AspGlu: 3.672 ± 0.068
2.275AspPhe: 2.275 ± 0.048
5.691AspGly: 5.691 ± 0.105
1.296AspHis: 1.296 ± 0.039
2.943AspIle: 2.943 ± 0.055
1.512AspLys: 1.512 ± 0.042
6.195AspLeu: 6.195 ± 0.082
1.588AspMet: 1.588 ± 0.043
1.083AspAsn: 1.083 ± 0.032
3.761AspPro: 3.761 ± 0.066
1.471AspGln: 1.471 ± 0.036
4.828AspArg: 4.828 ± 0.071
2.103AspSer: 2.103 ± 0.057
3.036AspThr: 3.036 ± 0.063
3.927AspVal: 3.927 ± 0.07
1.246AspTrp: 1.246 ± 0.034
1.497AspTyr: 1.497 ± 0.034
0.0AspXaa: 0.0 ± 0.0
Glu
9.103GluAla: 9.103 ± 0.109
0.348GluCys: 0.348 ± 0.018
3.335GluAsp: 3.335 ± 0.058
3.563GluGlu: 3.563 ± 0.073
1.708GluPhe: 1.708 ± 0.042
5.453GluGly: 5.453 ± 0.075
1.083GluHis: 1.083 ± 0.033
3.747GluIle: 3.747 ± 0.057
1.958GluLys: 1.958 ± 0.062
5.087GluLeu: 5.087 ± 0.084
1.838GluMet: 1.838 ± 0.043
1.541GluAsn: 1.541 ± 0.043
2.596GluPro: 2.596 ± 0.061
1.602GluGln: 1.602 ± 0.04
4.626GluArg: 4.626 ± 0.07
2.064GluSer: 2.064 ± 0.049
4.065GluThr: 4.065 ± 0.056
4.5GluVal: 4.5 ± 0.067
0.681GluTrp: 0.681 ± 0.024
1.042GluTyr: 1.042 ± 0.032
0.0GluXaa: 0.0 ± 0.0
Phe
4.717PheAla: 4.717 ± 0.071
0.429PheCys: 0.429 ± 0.019
2.839PheAsp: 2.839 ± 0.054
2.126PheGlu: 2.126 ± 0.047
1.419PhePhe: 1.419 ± 0.039
3.715PheGly: 3.715 ± 0.065
0.739PheHis: 0.739 ± 0.03
1.414PheIle: 1.414 ± 0.037
0.741PheLys: 0.741 ± 0.029
3.519PheLeu: 3.519 ± 0.055
0.739PheMet: 0.739 ± 0.026
0.858PheAsn: 0.858 ± 0.028
1.559PhePro: 1.559 ± 0.038
0.897PheGln: 0.897 ± 0.03
2.303PheArg: 2.303 ± 0.049
1.989PheSer: 1.989 ± 0.047
2.002PheThr: 2.002 ± 0.041
2.775PheVal: 2.775 ± 0.055
0.567PheTrp: 0.567 ± 0.023
0.927PheTyr: 0.927 ± 0.028
0.0PheXaa: 0.0 ± 0.0
Gly
12.07GlyAla: 12.07 ± 0.123
0.941GlyCys: 0.941 ± 0.033
4.977GlyAsp: 4.977 ± 0.094
4.89GlyGlu: 4.89 ± 0.066
3.731GlyPhe: 3.731 ± 0.058
8.257GlyGly: 8.257 ± 0.122
2.077GlyHis: 2.077 ± 0.042
4.019GlyIle: 4.019 ± 0.064
2.684GlyLys: 2.684 ± 0.054
10.236GlyLeu: 10.236 ± 0.1
2.569GlyMet: 2.569 ± 0.049
1.855GlyAsn: 1.855 ± 0.047
4.426GlyPro: 4.426 ± 0.068
3.093GlyGln: 3.093 ± 0.061
7.046GlyArg: 7.046 ± 0.082
3.738GlySer: 3.738 ± 0.078
4.895GlyThr: 4.895 ± 0.077
6.58GlyVal: 6.58 ± 0.075
1.661GlyTrp: 1.661 ± 0.045
2.386GlyTyr: 2.386 ± 0.042
0.0GlyXaa: 0.0 ± 0.0
His
2.471HisAla: 2.471 ± 0.048
0.224HisCys: 0.224 ± 0.015
1.243HisAsp: 1.243 ± 0.039
1.048HisGlu: 1.048 ± 0.033
0.802HisPhe: 0.802 ± 0.028
2.033HisGly: 2.033 ± 0.046
0.523HisHis: 0.523 ± 0.023
0.86HisIle: 0.86 ± 0.026
0.463HisLys: 0.463 ± 0.022
2.071HisLeu: 2.071 ± 0.046
0.501HisMet: 0.501 ± 0.02
0.392HisAsn: 0.392 ± 0.017
1.413HisPro: 1.413 ± 0.035
0.515HisGln: 0.515 ± 0.022
1.467HisArg: 1.467 ± 0.038
0.829HisSer: 0.829 ± 0.026
0.753HisThr: 0.753 ± 0.026
1.571HisVal: 1.571 ± 0.039
0.361HisTrp: 0.361 ± 0.017
0.554HisTyr: 0.554 ± 0.023
0.0HisXaa: 0.0 ± 0.0
Ile
6.97IleAla: 6.97 ± 0.087
0.525IleCys: 0.525 ± 0.022
3.387IleAsp: 3.387 ± 0.056
3.346IleGlu: 3.346 ± 0.062
1.618IlePhe: 1.618 ± 0.042
4.54IleGly: 4.54 ± 0.071
0.834IleHis: 0.834 ± 0.028
1.607IleIle: 1.607 ± 0.045
1.111IleLys: 1.111 ± 0.033
4.319IleLeu: 4.319 ± 0.064
0.849IleMet: 0.849 ± 0.029
1.13IleAsn: 1.13 ± 0.035
2.04IlePro: 2.04 ± 0.047
0.922IleGln: 0.922 ± 0.034
3.006IleArg: 3.006 ± 0.051
2.371IleSer: 2.371 ± 0.053
2.403IleThr: 2.403 ± 0.047
3.702IleVal: 3.702 ± 0.065
0.613IleTrp: 0.613 ± 0.025
1.09IleTyr: 1.09 ± 0.031
0.0IleXaa: 0.0 ± 0.0
Lys
3.607LysAla: 3.607 ± 0.077
0.172LysCys: 0.172 ± 0.012
1.397LysAsp: 1.397 ± 0.043
1.35LysGlu: 1.35 ± 0.041
0.72LysPhe: 0.72 ± 0.029
2.322LysGly: 2.322 ± 0.058
0.477LysHis: 0.477 ± 0.023
1.326LysIle: 1.326 ± 0.034
0.96LysLys: 0.96 ± 0.036
2.569LysLeu: 2.569 ± 0.063
0.712LysMet: 0.712 ± 0.026
0.62LysAsn: 0.62 ± 0.028
1.558LysPro: 1.558 ± 0.039
0.679LysGln: 0.679 ± 0.029
2.024LysArg: 2.024 ± 0.047
1.473LysSer: 1.473 ± 0.042
1.732LysThr: 1.732 ± 0.044
1.944LysVal: 1.944 ± 0.048
0.329LysTrp: 0.329 ± 0.018
0.524LysTyr: 0.524 ± 0.021
0.0LysXaa: 0.0 ± 0.0
Leu
15.227LeuAla: 15.227 ± 0.155
0.93LeuCys: 0.93 ± 0.029
6.312LeuAsp: 6.312 ± 0.081
5.266LeuGlu: 5.266 ± 0.077
3.614LeuPhe: 3.614 ± 0.064
9.213LeuGly: 9.213 ± 0.1
1.833LeuHis: 1.833 ± 0.044
5.015LeuIle: 5.015 ± 0.081
2.914LeuLys: 2.914 ± 0.059
8.795LeuLeu: 8.795 ± 0.122
2.655LeuMet: 2.655 ± 0.05
2.395LeuAsn: 2.395 ± 0.049
5.75LeuPro: 5.75 ± 0.093
2.357LeuGln: 2.357 ± 0.043
7.241LeuArg: 7.241 ± 0.094
6.59LeuSer: 6.59 ± 0.083
5.819LeuThr: 5.819 ± 0.073
7.225LeuVal: 7.225 ± 0.096
1.353LeuTrp: 1.353 ± 0.039
2.082LeuTyr: 2.082 ± 0.047
0.0LeuXaa: 0.0 ± 0.0
Met
3.582MetAla: 3.582 ± 0.051
0.17MetCys: 0.17 ± 0.013
1.258MetAsp: 1.258 ± 0.034
1.375MetGlu: 1.375 ± 0.038
0.747MetPhe: 0.747 ± 0.026
2.304MetGly: 2.304 ± 0.051
0.471MetHis: 0.471 ± 0.019
1.291MetIle: 1.291 ± 0.035
0.919MetLys: 0.919 ± 0.03
2.521MetLeu: 2.521 ± 0.052
0.687MetMet: 0.687 ± 0.025
0.695MetAsn: 0.695 ± 0.026
1.594MetPro: 1.594 ± 0.037
0.896MetGln: 0.896 ± 0.024
1.911MetArg: 1.911 ± 0.045
1.496MetSer: 1.496 ± 0.035
1.897MetThr: 1.897 ± 0.043
1.862MetVal: 1.862 ± 0.04
0.229MetTrp: 0.229 ± 0.015
0.326MetTyr: 0.326 ± 0.016
0.0MetXaa: 0.0 ± 0.0
Asn
2.796AsnAla: 2.796 ± 0.058
0.239AsnCys: 0.239 ± 0.015
1.255AsnAsp: 1.255 ± 0.042
1.003AsnGlu: 1.003 ± 0.032
0.775AsnPhe: 0.775 ± 0.025
2.037AsnGly: 2.037 ± 0.05
0.424AsnHis: 0.424 ± 0.02
1.15AsnIle: 1.15 ± 0.033
0.482AsnLys: 0.482 ± 0.022
2.152AsnLeu: 2.152 ± 0.039
0.601AsnMet: 0.601 ± 0.022
0.502AsnAsn: 0.502 ± 0.02
1.624AsnPro: 1.624 ± 0.043
0.527AsnGln: 0.527 ± 0.022
1.645AsnArg: 1.645 ± 0.039
0.897AsnSer: 0.897 ± 0.033
1.06AsnThr: 1.06 ± 0.037
1.682AsnVal: 1.682 ± 0.041
0.385AsnTrp: 0.385 ± 0.021
0.541AsnTyr: 0.541 ± 0.023
0.0AsnXaa: 0.0 ± 0.0
Pro
7.276ProAla: 7.276 ± 0.106
0.422ProCys: 0.422 ± 0.021
4.135ProAsp: 4.135 ± 0.069
4.587ProGlu: 4.587 ± 0.079
2.005ProPhe: 2.005 ± 0.042
5.516ProGly: 5.516 ± 0.081
1.109ProHis: 1.109 ± 0.032
2.035ProIle: 2.035 ± 0.039
1.397ProLys: 1.397 ± 0.048
4.949ProLeu: 4.949 ± 0.071
1.293ProMet: 1.293 ± 0.033
1.074ProAsn: 1.074 ± 0.025
2.881ProPro: 2.881 ± 0.068
1.488ProGln: 1.488 ± 0.038
3.42ProArg: 3.42 ± 0.064
2.242ProSer: 2.242 ± 0.047
2.238ProThr: 2.238 ± 0.053
4.532ProVal: 4.532 ± 0.066
0.691ProTrp: 0.691 ± 0.03
1.139ProTyr: 1.139 ± 0.037
0.0ProXaa: 0.0 ± 0.0
Gln
3.816GlnAla: 3.816 ± 0.063
0.184GlnCys: 0.184 ± 0.012
1.449GlnAsp: 1.449 ± 0.035
1.471GlnGlu: 1.471 ± 0.036
0.924GlnPhe: 0.924 ± 0.029
2.494GlnGly: 2.494 ± 0.045
0.467GlnHis: 0.467 ± 0.02
1.681GlnIle: 1.681 ± 0.037
0.869GlnLys: 0.869 ± 0.029
2.297GlnLeu: 2.297 ± 0.048
0.881GlnMet: 0.881 ± 0.032
0.672GlnAsn: 0.672 ± 0.026
1.492GlnPro: 1.492 ± 0.036
0.864GlnGln: 0.864 ± 0.039
2.046GlnArg: 2.046 ± 0.047
1.469GlnSer: 1.469 ± 0.04
1.565GlnThr: 1.565 ± 0.038
2.138GlnVal: 2.138 ± 0.049
0.323GlnTrp: 0.323 ± 0.015
0.505GlnTyr: 0.505 ± 0.022
0.0GlnXaa: 0.0 ± 0.0
Arg
10.172ArgAla: 10.172 ± 0.143
0.515ArgCys: 0.515 ± 0.026
4.343ArgAsp: 4.343 ± 0.068
4.014ArgGlu: 4.014 ± 0.07
2.969ArgPhe: 2.969 ± 0.05
5.397ArgGly: 5.397 ± 0.071
1.687ArgHis: 1.687 ± 0.038
3.652ArgIle: 3.652 ± 0.062
2.036ArgLys: 2.036 ± 0.049
8.718ArgLeu: 8.718 ± 0.113
2.051ArgMet: 2.051 ± 0.04
1.558ArgAsn: 1.558 ± 0.038
4.223ArgPro: 4.223 ± 0.072
2.256ArgGln: 2.256 ± 0.052
6.181ArgArg: 6.181 ± 0.097
2.954ArgSer: 2.954 ± 0.055
3.001ArgThr: 3.001 ± 0.057
5.196ArgVal: 5.196 ± 0.068
1.007ArgTrp: 1.007 ± 0.033
1.663ArgTyr: 1.663 ± 0.039
0.0ArgXaa: 0.0 ± 0.0
Ser
5.68SerAla: 5.68 ± 0.083
0.39SerCys: 0.39 ± 0.021
2.87SerAsp: 2.87 ± 0.052
2.564SerGlu: 2.564 ± 0.052
1.991SerPhe: 1.991 ± 0.045
4.893SerGly: 4.893 ± 0.087
1.014SerHis: 1.014 ± 0.031
1.961SerIle: 1.961 ± 0.052
1.096SerLys: 1.096 ± 0.035
4.519SerLeu: 4.519 ± 0.062
1.169SerMet: 1.169 ± 0.033
1.044SerAsn: 1.044 ± 0.028
2.439SerPro: 2.439 ± 0.044
1.306SerGln: 1.306 ± 0.031
3.069SerArg: 3.069 ± 0.054
2.049SerSer: 2.049 ± 0.062
2.156SerThr: 2.156 ± 0.049
3.45SerVal: 3.45 ± 0.065
0.593SerTrp: 0.593 ± 0.029
1.191SerTyr: 1.191 ± 0.034
0.0SerXaa: 0.0 ± 0.0
Thr
6.402ThrAla: 6.402 ± 0.082
0.461ThrCys: 0.461 ± 0.021
3.043ThrAsp: 3.043 ± 0.055
2.955ThrGlu: 2.955 ± 0.051
1.703ThrPhe: 1.703 ± 0.039
5.713ThrGly: 5.713 ± 0.082
1.01ThrHis: 1.01 ± 0.032
2.397ThrIle: 2.397 ± 0.054
1.115ThrLys: 1.115 ± 0.034
5.896ThrLeu: 5.896 ± 0.077
1.166ThrMet: 1.166 ± 0.037
1.031ThrAsn: 1.031 ± 0.029
3.361ThrPro: 3.361 ± 0.055
1.192ThrGln: 1.192 ± 0.034
3.668ThrArg: 3.668 ± 0.064
2.119ThrSer: 2.119 ± 0.046
2.398ThrThr: 2.398 ± 0.055
4.219ThrVal: 4.219 ± 0.066
0.64ThrTrp: 0.64 ± 0.025
1.105ThrTyr: 1.105 ± 0.037
0.0ThrXaa: 0.0 ± 0.0
Val
9.757ValAla: 9.757 ± 0.107
0.622ValCys: 0.622 ± 0.024
4.001ValAsp: 4.001 ± 0.055
4.697ValGlu: 4.697 ± 0.072
2.974ValPhe: 2.974 ± 0.059
5.523ValGly: 5.523 ± 0.075
1.341ValHis: 1.341 ± 0.032
3.871ValIle: 3.871 ± 0.065
1.971ValLys: 1.971 ± 0.05
7.886ValLeu: 7.886 ± 0.1
1.982ValMet: 1.982 ± 0.049
1.799ValAsn: 1.799 ± 0.039
3.918ValPro: 3.918 ± 0.063
1.956ValGln: 1.956 ± 0.041
4.508ValArg: 4.508 ± 0.059
3.86ValSer: 3.86 ± 0.059
4.493ValThr: 4.493 ± 0.076
5.653ValVal: 5.653 ± 0.077
0.979ValTrp: 0.979 ± 0.031
1.536ValTyr: 1.536 ± 0.038
0.0ValXaa: 0.0 ± 0.0
Trp
1.686TrpAla: 1.686 ± 0.042
0.132TrpCys: 0.132 ± 0.009
0.785TrpAsp: 0.785 ± 0.031
0.642TrpGlu: 0.642 ± 0.024
0.554TrpPhe: 0.554 ± 0.024
1.04TrpGly: 1.04 ± 0.032
0.333TrpHis: 0.333 ± 0.015
0.605TrpIle: 0.605 ± 0.026
0.386TrpLys: 0.386 ± 0.022
1.654TrpLeu: 1.654 ± 0.043
0.359TrpMet: 0.359 ± 0.019
0.33TrpAsn: 0.33 ± 0.018
0.773TrpPro: 0.773 ± 0.027
0.611TrpGln: 0.611 ± 0.02
1.247TrpArg: 1.247 ± 0.036
0.715TrpSer: 0.715 ± 0.028
0.711TrpThr: 0.711 ± 0.024
0.964TrpVal: 0.964 ± 0.029
0.234TrpTrp: 0.234 ± 0.015
0.276TrpTyr: 0.276 ± 0.015
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.668TyrAla: 2.668 ± 0.05
0.26TyrCys: 0.26 ± 0.015
1.572TyrAsp: 1.572 ± 0.042
1.282TyrGlu: 1.282 ± 0.038
0.888TyrPhe: 0.888 ± 0.029
2.195TyrGly: 2.195 ± 0.046
0.518TyrHis: 0.518 ± 0.021
0.897TyrIle: 0.897 ± 0.031
0.494TyrLys: 0.494 ± 0.019
2.242TyrLeu: 2.242 ± 0.049
0.464TyrMet: 0.464 ± 0.019
0.525TyrAsn: 0.525 ± 0.025
1.062TyrPro: 1.062 ± 0.032
0.603TyrGln: 0.603 ± 0.024
1.657TyrArg: 1.657 ± 0.046
1.013TyrSer: 1.013 ± 0.034
1.068TyrThr: 1.068 ± 0.037
1.5TyrVal: 1.5 ± 0.035
0.364TyrTrp: 0.364 ± 0.019
0.569TyrTyr: 0.569 ± 0.026
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 3552 proteins (1110346 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