Amino acid dipepetide frequency for Nitrosospira sp. Nl5

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
11.833AlaAla: 11.833 ± 0.142
1.067AlaCys: 1.067 ± 0.037
5.131AlaAsp: 5.131 ± 0.078
6.37AlaGlu: 6.37 ± 0.101
3.631AlaPhe: 3.631 ± 0.068
8.544AlaGly: 8.544 ± 0.12
2.169AlaHis: 2.169 ± 0.044
5.89AlaIle: 5.89 ± 0.095
4.129AlaLys: 4.129 ± 0.068
10.922AlaLeu: 10.922 ± 0.141
2.727AlaMet: 2.727 ± 0.062
3.214AlaAsn: 3.214 ± 0.069
3.854AlaPro: 3.854 ± 0.075
3.88AlaGln: 3.88 ± 0.078
6.492AlaArg: 6.492 ± 0.097
5.84AlaSer: 5.84 ± 0.082
5.028AlaThr: 5.028 ± 0.078
7.131AlaVal: 7.131 ± 0.116
1.334AlaTrp: 1.334 ± 0.049
2.567AlaTyr: 2.567 ± 0.059
0.0AlaXaa: 0.0 ± 0.0
Cys
0.919CysAla: 0.919 ± 0.037
0.158CysCys: 0.158 ± 0.016
0.533CysAsp: 0.533 ± 0.023
0.612CysGlu: 0.612 ± 0.029
0.372CysPhe: 0.372 ± 0.02
0.956CysGly: 0.956 ± 0.035
0.357CysHis: 0.357 ± 0.022
0.511CysIle: 0.511 ± 0.029
0.305CysLys: 0.305 ± 0.019
0.876CysLeu: 0.876 ± 0.032
0.229CysMet: 0.229 ± 0.016
0.337CysAsn: 0.337 ± 0.021
0.511CysPro: 0.511 ± 0.026
0.271CysGln: 0.271 ± 0.018
0.667CysArg: 0.667 ± 0.029
0.558CysSer: 0.558 ± 0.026
0.476CysThr: 0.476 ± 0.025
0.677CysVal: 0.677 ± 0.031
0.122CysTrp: 0.122 ± 0.014
0.292CysTyr: 0.292 ± 0.015
0.0CysXaa: 0.0 ± 0.0
Asp
5.297AspAla: 5.297 ± 0.076
0.506AspCys: 0.506 ± 0.023
2.604AspAsp: 2.604 ± 0.064
3.443AspGlu: 3.443 ± 0.064
2.27AspPhe: 2.27 ± 0.048
4.016AspGly: 4.016 ± 0.075
1.154AspHis: 1.154 ± 0.04
3.291AspIle: 3.291 ± 0.058
2.341AspLys: 2.341 ± 0.053
5.303AspLeu: 5.303 ± 0.07
1.335AspMet: 1.335 ± 0.036
1.722AspAsn: 1.722 ± 0.049
2.69AspPro: 2.69 ± 0.06
1.742AspGln: 1.742 ± 0.043
3.032AspArg: 3.032 ± 0.068
2.928AspSer: 2.928 ± 0.06
2.62AspThr: 2.62 ± 0.053
3.597AspVal: 3.597 ± 0.061
0.846AspTrp: 0.846 ± 0.027
1.82AspTyr: 1.82 ± 0.048
0.0AspXaa: 0.0 ± 0.0
Glu
6.269GluAla: 6.269 ± 0.105
0.499GluCys: 0.499 ± 0.026
2.617GluAsp: 2.617 ± 0.058
3.56GluGlu: 3.56 ± 0.083
2.287GluPhe: 2.287 ± 0.053
3.802GluGly: 3.802 ± 0.073
1.458GluHis: 1.458 ± 0.043
4.154GluIle: 4.154 ± 0.079
3.265GluLys: 3.265 ± 0.073
6.166GluLeu: 6.166 ± 0.091
1.666GluMet: 1.666 ± 0.04
2.309GluAsn: 2.309 ± 0.056
2.44GluPro: 2.44 ± 0.051
2.768GluGln: 2.768 ± 0.069
4.267GluArg: 4.267 ± 0.084
3.29GluSer: 3.29 ± 0.066
3.339GluThr: 3.339 ± 0.063
4.041GluVal: 4.041 ± 0.073
0.83GluTrp: 0.83 ± 0.031
1.508GluTyr: 1.508 ± 0.046
0.0GluXaa: 0.0 ± 0.0
Phe
3.674PheAla: 3.674 ± 0.072
0.45PheCys: 0.45 ± 0.024
2.478PheAsp: 2.478 ± 0.049
2.235PheGlu: 2.235 ± 0.058
1.647PhePhe: 1.647 ± 0.048
3.217PheGly: 3.217 ± 0.072
0.915PheHis: 0.915 ± 0.032
2.229PheIle: 2.229 ± 0.058
1.316PheLys: 1.316 ± 0.042
3.542PheLeu: 3.542 ± 0.078
0.903PheMet: 0.903 ± 0.032
1.471PheAsn: 1.471 ± 0.044
1.784PhePro: 1.784 ± 0.048
1.215PheGln: 1.215 ± 0.038
2.228PheArg: 2.228 ± 0.052
2.753PheSer: 2.753 ± 0.062
2.152PheThr: 2.152 ± 0.053
2.582PheVal: 2.582 ± 0.052
0.556PheTrp: 0.556 ± 0.024
1.164PheTyr: 1.164 ± 0.041
0.0PheXaa: 0.0 ± 0.0
Gly
6.969GlyAla: 6.969 ± 0.096
0.888GlyCys: 0.888 ± 0.035
3.879GlyAsp: 3.879 ± 0.066
4.709GlyGlu: 4.709 ± 0.093
3.285GlyPhe: 3.285 ± 0.066
6.262GlyGly: 6.262 ± 0.114
1.874GlyHis: 1.874 ± 0.055
5.161GlyIle: 5.161 ± 0.091
4.144GlyLys: 4.144 ± 0.073
7.527GlyLeu: 7.527 ± 0.097
2.469GlyMet: 2.469 ± 0.055
2.823GlyAsn: 2.823 ± 0.073
2.553GlyPro: 2.553 ± 0.054
2.802GlyGln: 2.802 ± 0.058
4.705GlyArg: 4.705 ± 0.075
4.656GlySer: 4.656 ± 0.079
4.016GlyThr: 4.016 ± 0.082
5.492GlyVal: 5.492 ± 0.08
1.164GlyTrp: 1.164 ± 0.041
2.591GlyTyr: 2.591 ± 0.053
0.0GlyXaa: 0.0 ± 0.0
His
2.489HisAla: 2.489 ± 0.055
0.309HisCys: 0.309 ± 0.02
1.248HisAsp: 1.248 ± 0.041
1.358HisGlu: 1.358 ± 0.044
1.002HisPhe: 1.002 ± 0.029
2.027HisGly: 2.027 ± 0.051
0.73HisHis: 0.73 ± 0.03
1.323HisIle: 1.323 ± 0.039
0.813HisLys: 0.813 ± 0.028
2.349HisLeu: 2.349 ± 0.05
0.523HisMet: 0.523 ± 0.025
0.749HisAsn: 0.749 ± 0.024
1.44HisPro: 1.44 ± 0.041
0.867HisGln: 0.867 ± 0.028
1.476HisArg: 1.476 ± 0.036
1.308HisSer: 1.308 ± 0.035
1.152HisThr: 1.152 ± 0.036
1.54HisVal: 1.54 ± 0.042
0.348HisTrp: 0.348 ± 0.022
0.813HisTyr: 0.813 ± 0.034
0.0HisXaa: 0.0 ± 0.0
Ile
6.465IleAla: 6.465 ± 0.086
0.557IleCys: 0.557 ± 0.027
3.354IleAsp: 3.354 ± 0.067
3.852IleGlu: 3.852 ± 0.076
2.105IlePhe: 2.105 ± 0.054
4.734IleGly: 4.734 ± 0.079
1.297IleHis: 1.297 ± 0.035
2.971IleIle: 2.971 ± 0.075
2.539IleLys: 2.539 ± 0.057
5.228IleLeu: 5.228 ± 0.08
1.227IleMet: 1.227 ± 0.041
2.12IleAsn: 2.12 ± 0.053
2.936IlePro: 2.936 ± 0.058
1.803IleGln: 1.803 ± 0.049
3.505IleArg: 3.505 ± 0.063
3.904IleSer: 3.904 ± 0.071
3.416IleThr: 3.416 ± 0.06
3.935IleVal: 3.935 ± 0.069
0.601IleTrp: 0.601 ± 0.026
1.478IleTyr: 1.478 ± 0.044
0.0IleXaa: 0.0 ± 0.0
Lys
4.161LysAla: 4.161 ± 0.08
0.318LysCys: 0.318 ± 0.02
2.113LysAsp: 2.113 ± 0.052
2.597LysGlu: 2.597 ± 0.074
1.418LysPhe: 1.418 ± 0.04
2.791LysGly: 2.791 ± 0.056
0.964LysHis: 0.964 ± 0.033
2.569LysIle: 2.569 ± 0.059
2.355LysLys: 2.355 ± 0.073
4.521LysLeu: 4.521 ± 0.082
1.184LysMet: 1.184 ± 0.038
1.678LysAsn: 1.678 ± 0.049
2.37LysPro: 2.37 ± 0.063
1.839LysGln: 1.839 ± 0.047
2.855LysArg: 2.855 ± 0.058
2.521LysSer: 2.521 ± 0.054
2.412LysThr: 2.412 ± 0.057
2.709LysVal: 2.709 ± 0.063
0.52LysTrp: 0.52 ± 0.025
1.046LysTyr: 1.046 ± 0.037
0.0LysXaa: 0.0 ± 0.0
Leu
11.412LeuAla: 11.412 ± 0.154
0.993LeuCys: 0.993 ± 0.03
5.688LeuAsp: 5.688 ± 0.085
5.941LeuGlu: 5.941 ± 0.093
3.763LeuPhe: 3.763 ± 0.066
7.686LeuGly: 7.686 ± 0.108
2.47LeuHis: 2.47 ± 0.061
5.65LeuIle: 5.65 ± 0.089
4.541LeuLys: 4.541 ± 0.076
11.013LeuLeu: 11.013 ± 0.174
2.437LeuMet: 2.437 ± 0.057
3.368LeuAsn: 3.368 ± 0.069
5.652LeuPro: 5.652 ± 0.094
3.7LeuGln: 3.7 ± 0.066
6.981LeuArg: 6.981 ± 0.101
6.598LeuSer: 6.598 ± 0.087
5.625LeuThr: 5.625 ± 0.087
6.568LeuVal: 6.568 ± 0.092
1.201LeuTrp: 1.201 ± 0.042
2.427LeuTyr: 2.427 ± 0.053
0.0LeuXaa: 0.0 ± 0.0
Met
2.523MetAla: 2.523 ± 0.055
0.168MetCys: 0.168 ± 0.016
1.259MetAsp: 1.259 ± 0.034
1.552MetGlu: 1.552 ± 0.046
0.757MetPhe: 0.757 ± 0.03
1.807MetGly: 1.807 ± 0.052
0.662MetHis: 0.662 ± 0.03
1.288MetIle: 1.288 ± 0.035
1.353MetLys: 1.353 ± 0.039
2.824MetLeu: 2.824 ± 0.062
0.651MetMet: 0.651 ± 0.031
1.065MetAsn: 1.065 ± 0.031
1.573MetPro: 1.573 ± 0.04
1.145MetGln: 1.145 ± 0.037
1.741MetArg: 1.741 ± 0.044
1.534MetSer: 1.534 ± 0.041
1.436MetThr: 1.436 ± 0.042
1.658MetVal: 1.658 ± 0.051
0.213MetTrp: 0.213 ± 0.017
0.383MetTyr: 0.383 ± 0.022
0.0MetXaa: 0.0 ± 0.0
Asn
3.407AsnAla: 3.407 ± 0.067
0.356AsnCys: 0.356 ± 0.022
1.722AsnAsp: 1.722 ± 0.049
1.804AsnGlu: 1.804 ± 0.041
1.429AsnPhe: 1.429 ± 0.044
2.735AsnGly: 2.735 ± 0.058
0.784AsnHis: 0.784 ± 0.03
2.027AsnIle: 2.027 ± 0.048
1.26AsnLys: 1.26 ± 0.044
3.676AsnLeu: 3.676 ± 0.068
0.786AsnMet: 0.786 ± 0.028
1.231AsnAsn: 1.231 ± 0.045
2.199AsnPro: 2.199 ± 0.05
1.237AsnGln: 1.237 ± 0.041
2.187AsnArg: 2.187 ± 0.052
1.993AsnSer: 1.993 ± 0.06
1.78AsnThr: 1.78 ± 0.045
2.373AsnVal: 2.373 ± 0.053
0.512AsnTrp: 0.512 ± 0.026
0.98AsnTyr: 0.98 ± 0.03
0.0AsnXaa: 0.0 ± 0.0
Pro
4.92ProAla: 4.92 ± 0.085
0.397ProCys: 0.397 ± 0.023
3.311ProAsp: 3.311 ± 0.061
3.654ProGlu: 3.654 ± 0.066
1.864ProPhe: 1.864 ± 0.045
4.213ProGly: 4.213 ± 0.085
1.12ProHis: 1.12 ± 0.043
2.377ProIle: 2.377 ± 0.052
1.688ProLys: 1.688 ± 0.048
4.867ProLeu: 4.867 ± 0.07
1.142ProMet: 1.142 ± 0.039
1.527ProAsn: 1.527 ± 0.046
2.387ProPro: 2.387 ± 0.06
1.832ProGln: 1.832 ± 0.052
2.508ProArg: 2.508 ± 0.055
2.722ProSer: 2.722 ± 0.063
2.043ProThr: 2.043 ± 0.052
3.919ProVal: 3.919 ± 0.068
0.582ProTrp: 0.582 ± 0.025
1.305ProTyr: 1.305 ± 0.035
0.0ProXaa: 0.0 ± 0.0
Gln
4.082GlnAla: 4.082 ± 0.07
0.292GlnCys: 0.292 ± 0.021
1.669GlnAsp: 1.669 ± 0.042
2.114GlnGlu: 2.114 ± 0.056
1.324GlnPhe: 1.324 ± 0.034
2.717GlnGly: 2.717 ± 0.058
0.963GlnHis: 0.963 ± 0.034
2.242GlnIle: 2.242 ± 0.049
1.662GlnLys: 1.662 ± 0.046
3.976GlnLeu: 3.976 ± 0.074
0.96GlnMet: 0.96 ± 0.034
1.235GlnAsn: 1.235 ± 0.037
1.865GlnPro: 1.865 ± 0.051
1.692GlnGln: 1.692 ± 0.053
2.613GlnArg: 2.613 ± 0.061
2.046GlnSer: 2.046 ± 0.048
1.791GlnThr: 1.791 ± 0.045
2.651GlnVal: 2.651 ± 0.061
0.526GlnTrp: 0.526 ± 0.027
0.98GlnTyr: 0.98 ± 0.04
0.0GlnXaa: 0.0 ± 0.0
Arg
5.603ArgAla: 5.603 ± 0.084
0.58ArgCys: 0.58 ± 0.024
3.478ArgAsp: 3.478 ± 0.07
4.338ArgGlu: 4.338 ± 0.085
2.775ArgPhe: 2.775 ± 0.057
4.198ArgGly: 4.198 ± 0.078
1.728ArgHis: 1.728 ± 0.041
4.098ArgIle: 4.098 ± 0.066
2.844ArgLys: 2.844 ± 0.058
6.951ArgLeu: 6.951 ± 0.105
1.847ArgMet: 1.847 ± 0.044
2.469ArgAsn: 2.469 ± 0.06
2.704ArgPro: 2.704 ± 0.055
2.742ArgGln: 2.742 ± 0.055
4.25ArgArg: 4.25 ± 0.088
3.369ArgSer: 3.369 ± 0.067
2.959ArgThr: 2.959 ± 0.062
4.226ArgVal: 4.226 ± 0.074
0.854ArgTrp: 0.854 ± 0.038
2.093ArgTyr: 2.093 ± 0.052
0.0ArgXaa: 0.0 ± 0.0
Ser
5.791SerAla: 5.791 ± 0.087
0.55SerCys: 0.55 ± 0.027
2.905SerAsp: 2.905 ± 0.056
3.142SerGlu: 3.142 ± 0.065
2.355SerPhe: 2.355 ± 0.054
5.858SerGly: 5.858 ± 0.081
1.547SerHis: 1.547 ± 0.045
3.271SerIle: 3.271 ± 0.068
2.239SerLys: 2.239 ± 0.054
6.059SerLeu: 6.059 ± 0.086
1.597SerMet: 1.597 ± 0.043
1.938SerAsn: 1.938 ± 0.055
3.114SerPro: 3.114 ± 0.06
2.116SerGln: 2.116 ± 0.05
3.909SerArg: 3.909 ± 0.078
3.738SerSer: 3.738 ± 0.072
2.906SerThr: 2.906 ± 0.063
4.046SerVal: 4.046 ± 0.069
0.762SerTrp: 0.762 ± 0.03
1.571SerTyr: 1.571 ± 0.049
0.0SerXaa: 0.0 ± 0.0
Thr
5.29ThrAla: 5.29 ± 0.082
0.498ThrCys: 0.498 ± 0.026
2.75ThrAsp: 2.75 ± 0.057
2.863ThrGlu: 2.863 ± 0.063
1.933ThrPhe: 1.933 ± 0.057
4.827ThrGly: 4.827 ± 0.073
1.152ThrHis: 1.152 ± 0.04
2.732ThrIle: 2.732 ± 0.066
1.613ThrLys: 1.613 ± 0.049
6.047ThrLeu: 6.047 ± 0.083
1.147ThrMet: 1.147 ± 0.036
1.376ThrAsn: 1.376 ± 0.044
2.972ThrPro: 2.972 ± 0.06
1.833ThrGln: 1.833 ± 0.044
3.188ThrArg: 3.188 ± 0.063
2.984ThrSer: 2.984 ± 0.063
2.598ThrThr: 2.598 ± 0.063
3.953ThrVal: 3.953 ± 0.078
0.595ThrTrp: 0.595 ± 0.027
1.407ThrTyr: 1.407 ± 0.041
0.0ThrXaa: 0.0 ± 0.0
Val
7.122ValAla: 7.122 ± 0.099
0.697ValCys: 0.697 ± 0.029
3.701ValAsp: 3.701 ± 0.064
4.307ValGlu: 4.307 ± 0.073
2.572ValPhe: 2.572 ± 0.064
4.561ValGly: 4.561 ± 0.079
1.427ValHis: 1.427 ± 0.044
4.224ValIle: 4.224 ± 0.071
3.02ValLys: 3.02 ± 0.065
7.2ValLeu: 7.2 ± 0.108
1.903ValMet: 1.903 ± 0.047
2.529ValAsn: 2.529 ± 0.054
3.351ValPro: 3.351 ± 0.068
2.159ValGln: 2.159 ± 0.046
4.364ValArg: 4.364 ± 0.08
4.262ValSer: 4.262 ± 0.073
3.99ValThr: 3.99 ± 0.072
5.187ValVal: 5.187 ± 0.091
0.815ValTrp: 0.815 ± 0.031
1.615ValTyr: 1.615 ± 0.038
0.0ValXaa: 0.0 ± 0.0
Trp
0.965TrpAla: 0.965 ± 0.034
0.119TrpCys: 0.119 ± 0.011
0.643TrpAsp: 0.643 ± 0.03
0.642TrpGlu: 0.642 ± 0.033
0.507TrpPhe: 0.507 ± 0.025
0.863TrpGly: 0.863 ± 0.037
0.369TrpHis: 0.369 ± 0.02
0.765TrpIle: 0.765 ± 0.028
0.614TrpLys: 0.614 ± 0.026
1.68TrpLeu: 1.68 ± 0.055
0.357TrpMet: 0.357 ± 0.023
0.49TrpAsn: 0.49 ± 0.024
0.561TrpPro: 0.561 ± 0.027
0.649TrpGln: 0.649 ± 0.026
1.049TrpArg: 1.049 ± 0.041
0.722TrpSer: 0.722 ± 0.034
0.61TrpThr: 0.61 ± 0.027
0.869TrpVal: 0.869 ± 0.035
0.218TrpTrp: 0.218 ± 0.018
0.35TrpTyr: 0.35 ± 0.023
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.564TyrAla: 2.564 ± 0.061
0.338TyrCys: 0.338 ± 0.021
1.473TyrAsp: 1.473 ± 0.052
1.441TyrGlu: 1.441 ± 0.045
1.216TyrPhe: 1.216 ± 0.039
2.156TyrGly: 2.156 ± 0.054
0.723TyrHis: 0.723 ± 0.028
1.253TyrIle: 1.253 ± 0.039
0.899TyrLys: 0.899 ± 0.031
2.987TyrLeu: 2.987 ± 0.069
0.501TyrMet: 0.501 ± 0.027
0.828TyrAsn: 0.828 ± 0.033
1.42TyrPro: 1.42 ± 0.044
1.109TyrGln: 1.109 ± 0.035
2.089TyrArg: 2.089 ± 0.044
1.688TyrSer: 1.688 ± 0.039
1.41TyrThr: 1.41 ± 0.038
1.851TyrVal: 1.851 ± 0.052
0.445TyrTrp: 0.445 ± 0.021
0.817TyrTyr: 0.817 ± 0.028
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 2892 proteins (867502 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