Amino acid dipepetide frequency for Bradyrhizobium sp. Leo170

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
16.628AlaAla: 16.628 ± 0.107
1.082AlaCys: 1.082 ± 0.021
6.455AlaAsp: 6.455 ± 0.056
6.967AlaGlu: 6.967 ± 0.068
4.374AlaPhe: 4.374 ± 0.042
9.956AlaGly: 9.956 ± 0.1
2.206AlaHis: 2.206 ± 0.033
6.68AlaIle: 6.68 ± 0.054
4.633AlaLys: 4.633 ± 0.051
12.499AlaLeu: 12.499 ± 0.078
3.321AlaMet: 3.321 ± 0.037
3.251AlaAsn: 3.251 ± 0.045
5.496AlaPro: 5.496 ± 0.06
4.018AlaGln: 4.018 ± 0.044
8.394AlaArg: 8.394 ± 0.072
6.983AlaSer: 6.983 ± 0.064
6.324AlaThr: 6.324 ± 0.055
8.603AlaVal: 8.603 ± 0.063
1.483AlaTrp: 1.483 ± 0.027
2.571AlaTyr: 2.571 ± 0.032
0.0AlaXaa: 0.0 ± 0.0
Cys
1.016CysAla: 1.016 ± 0.019
0.142CysCys: 0.142 ± 0.009
0.508CysAsp: 0.508 ± 0.014
0.448CysGlu: 0.448 ± 0.013
0.341CysPhe: 0.341 ± 0.01
0.957CysGly: 0.957 ± 0.021
0.238CysHis: 0.238 ± 0.011
0.413CysIle: 0.413 ± 0.015
0.224CysLys: 0.224 ± 0.01
0.791CysLeu: 0.791 ± 0.018
0.177CysMet: 0.177 ± 0.008
0.231CysAsn: 0.231 ± 0.009
0.428CysPro: 0.428 ± 0.013
0.218CysGln: 0.218 ± 0.009
0.651CysArg: 0.651 ± 0.015
0.547CysSer: 0.547 ± 0.015
0.431CysThr: 0.431 ± 0.015
0.622CysVal: 0.622 ± 0.015
0.119CysTrp: 0.119 ± 0.007
0.226CysTyr: 0.226 ± 0.01
0.0CysXaa: 0.0 ± 0.0
Asp
6.463AspAla: 6.463 ± 0.051
0.453AspCys: 0.453 ± 0.015
2.992AspAsp: 2.992 ± 0.043
3.186AspGlu: 3.186 ± 0.038
2.128AspPhe: 2.128 ± 0.03
4.852AspGly: 4.852 ± 0.055
1.235AspHis: 1.235 ± 0.025
3.096AspIle: 3.096 ± 0.038
1.777AspLys: 1.777 ± 0.027
5.506AspLeu: 5.506 ± 0.052
1.171AspMet: 1.171 ± 0.017
1.407AspAsn: 1.407 ± 0.025
3.342AspPro: 3.342 ± 0.035
1.765AspGln: 1.765 ± 0.028
4.119AspArg: 4.119 ± 0.046
2.271AspSer: 2.271 ± 0.031
2.453AspThr: 2.453 ± 0.037
4.306AspVal: 4.306 ± 0.045
0.872AspTrp: 0.872 ± 0.019
1.444AspTyr: 1.444 ± 0.022
0.0AspXaa: 0.0 ± 0.0
Glu
6.777GluAla: 6.777 ± 0.057
0.372GluCys: 0.372 ± 0.012
2.359GluAsp: 2.359 ± 0.032
2.708GluGlu: 2.708 ± 0.045
1.87GluPhe: 1.87 ± 0.028
3.745GluGly: 3.745 ± 0.042
1.198GluHis: 1.198 ± 0.021
3.41GluIle: 3.41 ± 0.042
2.273GluLys: 2.273 ± 0.039
5.456GluLeu: 5.456 ± 0.051
1.383GluMet: 1.383 ± 0.022
1.545GluAsn: 1.545 ± 0.029
2.595GluPro: 2.595 ± 0.039
2.196GluGln: 2.196 ± 0.032
4.815GluArg: 4.815 ± 0.05
2.321GluSer: 2.321 ± 0.032
3.088GluThr: 3.088 ± 0.034
3.739GluVal: 3.739 ± 0.043
0.674GluTrp: 0.674 ± 0.019
0.974GluTyr: 0.974 ± 0.018
0.0GluXaa: 0.0 ± 0.0
Phe
4.804PheAla: 4.804 ± 0.049
0.411PheCys: 0.411 ± 0.014
2.516PheAsp: 2.516 ± 0.032
2.027PheGlu: 2.027 ± 0.031
1.447PhePhe: 1.447 ± 0.025
3.825PheGly: 3.825 ± 0.044
0.73PheHis: 0.73 ± 0.016
1.749PheIle: 1.749 ± 0.027
1.126PheLys: 1.126 ± 0.024
3.261PheLeu: 3.261 ± 0.045
0.774PheMet: 0.774 ± 0.018
1.157PheAsn: 1.157 ± 0.023
1.679PhePro: 1.679 ± 0.024
1.047PheGln: 1.047 ± 0.021
2.327PheArg: 2.327 ± 0.033
2.252PheSer: 2.252 ± 0.033
2.036PheThr: 2.036 ± 0.03
3.034PheVal: 3.034 ± 0.04
0.555PheTrp: 0.555 ± 0.017
0.908PheTyr: 0.908 ± 0.022
0.0PheXaa: 0.0 ± 0.0
Gly
9.025GlyAla: 9.025 ± 0.087
0.86GlyCys: 0.86 ± 0.02
4.234GlyAsp: 4.234 ± 0.061
4.33GlyGlu: 4.33 ± 0.048
3.588GlyPhe: 3.588 ± 0.04
7.389GlyGly: 7.389 ± 0.114
1.783GlyHis: 1.783 ± 0.028
4.759GlyIle: 4.759 ± 0.047
3.425GlyLys: 3.425 ± 0.044
8.249GlyLeu: 8.249 ± 0.063
2.095GlyMet: 2.095 ± 0.032
2.395GlyAsn: 2.395 ± 0.049
3.505GlyPro: 3.505 ± 0.038
2.733GlyGln: 2.733 ± 0.035
5.844GlyArg: 5.844 ± 0.05
4.951GlySer: 4.951 ± 0.07
4.663GlyThr: 4.663 ± 0.06
6.008GlyVal: 6.008 ± 0.059
1.312GlyTrp: 1.312 ± 0.021
2.432GlyTyr: 2.432 ± 0.036
0.0GlyXaa: 0.0 ± 0.0
His
2.257HisAla: 2.257 ± 0.034
0.249HisCys: 0.249 ± 0.011
1.247HisAsp: 1.247 ± 0.024
1.008HisGlu: 1.008 ± 0.02
0.851HisPhe: 0.851 ± 0.019
1.932HisGly: 1.932 ± 0.03
0.594HisHis: 0.594 ± 0.018
0.949HisIle: 0.949 ± 0.022
0.494HisLys: 0.494 ± 0.015
2.022HisLeu: 2.022 ± 0.03
0.449HisMet: 0.449 ± 0.012
0.479HisAsn: 0.479 ± 0.014
1.306HisPro: 1.306 ± 0.027
0.613HisGln: 0.613 ± 0.014
1.463HisArg: 1.463 ± 0.026
1.002HisSer: 1.002 ± 0.023
0.848HisThr: 0.848 ± 0.017
1.506HisVal: 1.506 ± 0.028
0.341HisTrp: 0.341 ± 0.011
0.562HisTyr: 0.562 ± 0.016
0.0HisXaa: 0.0 ± 0.0
Ile
7.606IleAla: 7.606 ± 0.06
0.551IleCys: 0.551 ± 0.017
3.74IleAsp: 3.74 ± 0.039
3.64IleGlu: 3.64 ± 0.043
1.749IlePhe: 1.749 ± 0.03
5.232IleGly: 5.232 ± 0.051
0.912IleHis: 0.912 ± 0.018
2.451IleIle: 2.451 ± 0.035
1.794IleLys: 1.794 ± 0.026
4.394IleLeu: 4.394 ± 0.045
1.01IleMet: 1.01 ± 0.023
1.62IleAsn: 1.62 ± 0.028
2.404IlePro: 2.404 ± 0.03
1.306IleGln: 1.306 ± 0.024
3.319IleArg: 3.319 ± 0.036
3.219IleSer: 3.219 ± 0.036
2.835IleThr: 2.835 ± 0.038
4.582IleVal: 4.582 ± 0.046
0.615IleTrp: 0.615 ± 0.014
1.239IleTyr: 1.239 ± 0.024
0.0IleXaa: 0.0 ± 0.0
Lys
4.313LysAla: 4.313 ± 0.047
0.201LysCys: 0.201 ± 0.009
1.832LysAsp: 1.832 ± 0.031
1.74LysGlu: 1.74 ± 0.028
1.096LysPhe: 1.096 ± 0.021
2.622LysGly: 2.622 ± 0.034
0.691LysHis: 0.691 ± 0.018
1.971LysIle: 1.971 ± 0.03
1.485LysLys: 1.485 ± 0.036
3.799LysLeu: 3.799 ± 0.046
0.875LysMet: 0.875 ± 0.017
0.97LysAsn: 0.97 ± 0.021
2.317LysPro: 2.317 ± 0.033
1.256LysGln: 1.256 ± 0.021
2.584LysArg: 2.584 ± 0.037
2.114LysSer: 2.114 ± 0.031
2.133LysThr: 2.133 ± 0.034
2.626LysVal: 2.626 ± 0.039
0.435LysTrp: 0.435 ± 0.012
0.766LysTyr: 0.766 ± 0.018
0.0LysXaa: 0.0 ± 0.0
Leu
13.037LeuAla: 13.037 ± 0.078
0.87LeuCys: 0.87 ± 0.019
5.548LeuAsp: 5.548 ± 0.048
4.826LeuGlu: 4.826 ± 0.053
3.596LeuPhe: 3.596 ± 0.042
7.958LeuGly: 7.958 ± 0.064
1.854LeuHis: 1.854 ± 0.03
5.127LeuIle: 5.127 ± 0.052
3.766LeuLys: 3.766 ± 0.043
9.442LeuLeu: 9.442 ± 0.09
2.24LeuMet: 2.24 ± 0.032
2.816LeuAsn: 2.816 ± 0.035
5.422LeuPro: 5.422 ± 0.054
2.974LeuGln: 2.974 ± 0.032
6.905LeuArg: 6.905 ± 0.057
6.425LeuSer: 6.425 ± 0.059
5.624LeuThr: 5.624 ± 0.054
7.396LeuVal: 7.396 ± 0.055
1.139LeuTrp: 1.139 ± 0.021
1.988LeuTyr: 1.988 ± 0.029
0.0LeuXaa: 0.0 ± 0.0
Met
2.775MetAla: 2.775 ± 0.035
0.161MetCys: 0.161 ± 0.009
1.003MetAsp: 1.003 ± 0.019
0.943MetGlu: 0.943 ± 0.02
0.78MetPhe: 0.78 ± 0.019
1.579MetGly: 1.579 ± 0.03
0.455MetHis: 0.455 ± 0.012
1.368MetIle: 1.368 ± 0.023
1.018MetLys: 1.018 ± 0.021
2.523MetLeu: 2.523 ± 0.034
0.657MetMet: 0.657 ± 0.016
0.748MetAsn: 0.748 ± 0.016
1.451MetPro: 1.451 ± 0.024
0.827MetGln: 0.827 ± 0.019
1.751MetArg: 1.751 ± 0.026
1.722MetSer: 1.722 ± 0.028
1.743MetThr: 1.743 ± 0.028
1.657MetVal: 1.657 ± 0.029
0.223MetTrp: 0.223 ± 0.009
0.348MetTyr: 0.348 ± 0.011
0.0MetXaa: 0.0 ± 0.0
Asn
3.382AsnAla: 3.382 ± 0.042
0.26AsnCys: 0.26 ± 0.01
1.565AsnAsp: 1.565 ± 0.031
1.42AsnGlu: 1.42 ± 0.022
1.099AsnPhe: 1.099 ± 0.023
2.613AsnGly: 2.613 ± 0.043
0.525AsnHis: 0.525 ± 0.015
1.564AsnIle: 1.564 ± 0.029
0.853AsnLys: 0.853 ± 0.017
2.809AsnLeu: 2.809 ± 0.033
0.595AsnMet: 0.595 ± 0.015
0.883AsnAsn: 0.883 ± 0.023
1.908AsnPro: 1.908 ± 0.026
0.854AsnGln: 0.854 ± 0.02
1.841AsnArg: 1.841 ± 0.023
1.468AsnSer: 1.468 ± 0.028
1.366AsnThr: 1.366 ± 0.028
2.271AsnVal: 2.271 ± 0.032
0.477AsnTrp: 0.477 ± 0.012
0.76AsnTyr: 0.76 ± 0.019
0.0AsnXaa: 0.0 ± 0.0
Pro
6.128ProAla: 6.128 ± 0.063
0.336ProCys: 0.336 ± 0.012
3.424ProAsp: 3.424 ± 0.038
3.241ProGlu: 3.241 ± 0.04
1.986ProPhe: 1.986 ± 0.028
4.415ProGly: 4.415 ± 0.051
1.037ProHis: 1.037 ± 0.021
2.556ProIle: 2.556 ± 0.032
1.965ProLys: 1.965 ± 0.027
4.695ProLeu: 4.695 ± 0.046
1.195ProMet: 1.195 ± 0.023
1.641ProAsn: 1.641 ± 0.026
3.033ProPro: 3.033 ± 0.047
1.756ProGln: 1.756 ± 0.026
3.098ProArg: 3.098 ± 0.041
3.243ProSer: 3.243 ± 0.036
2.773ProThr: 2.773 ± 0.036
4.012ProVal: 4.012 ± 0.044
0.712ProTrp: 0.712 ± 0.016
1.235ProTyr: 1.235 ± 0.022
0.0ProXaa: 0.0 ± 0.0
Gln
4.002GlnAla: 4.002 ± 0.047
0.255GlnCys: 0.255 ± 0.012
1.437GlnAsp: 1.437 ± 0.025
1.424GlnGlu: 1.424 ± 0.026
1.221GlnPhe: 1.221 ± 0.021
2.333GlnGly: 2.333 ± 0.031
0.703GlnHis: 0.703 ± 0.017
1.887GlnIle: 1.887 ± 0.029
1.159GlnLys: 1.159 ± 0.023
3.103GlnLeu: 3.103 ± 0.036
0.871GlnMet: 0.871 ± 0.018
0.937GlnAsn: 0.937 ± 0.019
1.857GlnPro: 1.857 ± 0.03
1.41GlnGln: 1.41 ± 0.027
2.583GlnArg: 2.583 ± 0.035
1.948GlnSer: 1.948 ± 0.03
1.773GlnThr: 1.773 ± 0.027
2.277GlnVal: 2.277 ± 0.036
0.471GlnTrp: 0.471 ± 0.016
0.692GlnTyr: 0.692 ± 0.019
0.0GlnXaa: 0.0 ± 0.0
Arg
7.847ArgAla: 7.847 ± 0.061
0.583ArgCys: 0.583 ± 0.014
4.009ArgAsp: 4.009 ± 0.048
4.119ArgGlu: 4.119 ± 0.053
2.794ArgPhe: 2.794 ± 0.037
4.851ArgGly: 4.851 ± 0.045
1.612ArgHis: 1.612 ± 0.021
4.062ArgIle: 4.062 ± 0.045
2.588ArgLys: 2.588 ± 0.04
7.578ArgLeu: 7.578 ± 0.066
1.768ArgMet: 1.768 ± 0.026
2.032ArgAsn: 2.032 ± 0.028
3.626ArgPro: 3.626 ± 0.043
2.542ArgGln: 2.542 ± 0.034
5.671ArgArg: 5.671 ± 0.06
3.994ArgSer: 3.994 ± 0.042
3.416ArgThr: 3.416 ± 0.039
4.654ArgVal: 4.654 ± 0.048
1.029ArgTrp: 1.029 ± 0.02
1.792ArgTyr: 1.792 ± 0.025
0.0ArgXaa: 0.0 ± 0.0
Ser
6.63SerAla: 6.63 ± 0.061
0.482SerCys: 0.482 ± 0.014
3.174SerAsp: 3.174 ± 0.036
2.979SerGlu: 2.979 ± 0.031
2.414SerPhe: 2.414 ± 0.033
5.677SerGly: 5.677 ± 0.068
1.146SerHis: 1.146 ± 0.022
3.153SerIle: 3.153 ± 0.041
1.843SerLys: 1.843 ± 0.029
5.634SerLeu: 5.634 ± 0.051
1.368SerMet: 1.368 ± 0.023
1.578SerAsn: 1.578 ± 0.029
3.088SerPro: 3.088 ± 0.034
1.773SerGln: 1.773 ± 0.031
3.893SerArg: 3.893 ± 0.044
3.479SerSer: 3.479 ± 0.045
3.054SerThr: 3.054 ± 0.039
4.274SerVal: 4.274 ± 0.052
0.784SerTrp: 0.784 ± 0.018
1.425SerTyr: 1.425 ± 0.024
0.0SerXaa: 0.0 ± 0.0
Thr
6.317ThrAla: 6.317 ± 0.063
0.445ThrCys: 0.445 ± 0.014
2.735ThrAsp: 2.735 ± 0.037
2.593ThrGlu: 2.593 ± 0.036
2.136ThrPhe: 2.136 ± 0.033
4.889ThrGly: 4.889 ± 0.054
1.002ThrHis: 1.002 ± 0.023
3.205ThrIle: 3.205 ± 0.042
1.721ThrLys: 1.721 ± 0.027
5.676ThrLeu: 5.676 ± 0.059
1.243ThrMet: 1.243 ± 0.023
1.486ThrAsn: 1.486 ± 0.029
3.325ThrPro: 3.325 ± 0.041
1.52ThrGln: 1.52 ± 0.024
3.323ThrArg: 3.323 ± 0.037
3.241ThrSer: 3.241 ± 0.044
3.123ThrThr: 3.123 ± 0.045
4.253ThrVal: 4.253 ± 0.051
0.673ThrTrp: 0.673 ± 0.017
1.256ThrTyr: 1.256 ± 0.021
0.0ThrXaa: 0.0 ± 0.0
Val
9.243ValAla: 9.243 ± 0.056
0.619ValCys: 0.619 ± 0.017
4.035ValAsp: 4.035 ± 0.04
4.193ValGlu: 4.193 ± 0.042
2.686ValPhe: 2.686 ± 0.032
5.681ValGly: 5.681 ± 0.05
1.413ValHis: 1.413 ± 0.025
4.147ValIle: 4.147 ± 0.046
2.487ValLys: 2.487 ± 0.036
7.462ValLeu: 7.462 ± 0.06
1.757ValMet: 1.757 ± 0.028
2.181ValAsn: 2.181 ± 0.027
3.794ValPro: 3.794 ± 0.043
2.188ValGln: 2.188 ± 0.027
5.01ValArg: 5.01 ± 0.053
4.474ValSer: 4.474 ± 0.048
4.545ValThr: 4.545 ± 0.045
6.08ValVal: 6.08 ± 0.06
0.873ValTrp: 0.873 ± 0.02
1.548ValTyr: 1.548 ± 0.024
0.0ValXaa: 0.0 ± 0.0
Trp
1.119TrpAla: 1.119 ± 0.019
0.147TrpCys: 0.147 ± 0.008
0.586TrpAsp: 0.586 ± 0.014
0.543TrpGlu: 0.543 ± 0.013
0.547TrpPhe: 0.547 ± 0.015
0.903TrpGly: 0.903 ± 0.019
0.359TrpHis: 0.359 ± 0.011
0.736TrpIle: 0.736 ± 0.017
0.508TrpLys: 0.508 ± 0.017
1.633TrpLeu: 1.633 ± 0.029
0.35TrpMet: 0.35 ± 0.011
0.486TrpAsn: 0.486 ± 0.013
0.714TrpPro: 0.714 ± 0.017
0.569TrpGln: 0.569 ± 0.014
1.181TrpArg: 1.181 ± 0.023
0.909TrpSer: 0.909 ± 0.021
0.827TrpThr: 0.827 ± 0.019
0.767TrpVal: 0.767 ± 0.019
0.233TrpTrp: 0.233 ± 0.011
0.308TrpTyr: 0.308 ± 0.012
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.554TyrAla: 2.554 ± 0.039
0.251TyrCys: 0.251 ± 0.011
1.44TyrAsp: 1.44 ± 0.023
1.163TyrGlu: 1.163 ± 0.021
0.963TyrPhe: 0.963 ± 0.022
2.171TyrGly: 2.171 ± 0.027
0.48TyrHis: 0.48 ± 0.014
0.936TyrIle: 0.936 ± 0.019
0.687TyrLys: 0.687 ± 0.017
2.419TyrLeu: 2.419 ± 0.03
0.432TyrMet: 0.432 ± 0.013
0.665TyrAsn: 0.665 ± 0.018
1.193TyrPro: 1.193 ± 0.021
0.778TyrGln: 0.778 ± 0.017
1.792TyrArg: 1.792 ± 0.026
1.286TyrSer: 1.286 ± 0.027
1.108TyrThr: 1.108 ± 0.022
1.751TyrVal: 1.751 ± 0.024
0.404TyrTrp: 0.404 ± 0.013
0.643TyrTyr: 0.643 ± 0.018
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 8497 proteins (2502016 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