Amino acid dipepetide frequency for Nematostella vectensis (Starlet sea anemone)

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
4.616AlaAla: 4.616 ± 0.034
1.502AlaCys: 1.502 ± 0.021
3.092AlaAsp: 3.092 ± 0.025
3.688AlaGlu: 3.688 ± 0.027
2.709AlaPhe: 2.709 ± 0.026
3.753AlaGly: 3.753 ± 0.031
1.526AlaHis: 1.526 ± 0.026
3.889AlaIle: 3.889 ± 0.033
3.909AlaLys: 3.909 ± 0.033
6.365AlaLeu: 6.365 ± 0.043
1.804AlaMet: 1.804 ± 0.024
2.521AlaAsn: 2.521 ± 0.023
2.655AlaPro: 2.655 ± 0.029
2.31AlaGln: 2.31 ± 0.023
3.5AlaArg: 3.5 ± 0.031
5.114AlaSer: 5.114 ± 0.036
3.742AlaThr: 3.742 ± 0.03
4.754AlaVal: 4.754 ± 0.037
0.825AlaTrp: 0.825 ± 0.013
1.894AlaTyr: 1.894 ± 0.026
0.001AlaXaa: 0.001 ± 0.0
Cys
1.478CysAla: 1.478 ± 0.024
0.676CysCys: 0.676 ± 0.016
1.301CysAsp: 1.301 ± 0.022
1.225CysGlu: 1.225 ± 0.019
0.939CysPhe: 0.939 ± 0.014
1.587CysGly: 1.587 ± 0.025
0.75CysHis: 0.75 ± 0.02
1.292CysIle: 1.292 ± 0.022
1.442CysLys: 1.442 ± 0.025
2.252CysLeu: 2.252 ± 0.031
0.557CysMet: 0.557 ± 0.014
1.013CysAsn: 1.013 ± 0.02
1.306CysPro: 1.306 ± 0.033
0.914CysGln: 0.914 ± 0.017
1.256CysArg: 1.256 ± 0.018
1.886CysSer: 1.886 ± 0.03
1.525CysThr: 1.525 ± 0.029
1.677CysVal: 1.677 ± 0.028
0.338CysTrp: 0.338 ± 0.01
0.912CysTyr: 0.912 ± 0.02
0.0CysXaa: 0.0 ± 0.0
Asp
3.12AspAla: 3.12 ± 0.023
1.084AspCys: 1.084 ± 0.017
3.373AspAsp: 3.373 ± 0.033
3.864AspGlu: 3.864 ± 0.03
2.218AspPhe: 2.218 ± 0.018
3.529AspGly: 3.529 ± 0.032
1.307AspHis: 1.307 ± 0.02
3.181AspIle: 3.181 ± 0.029
3.221AspLys: 3.221 ± 0.029
4.641AspLeu: 4.641 ± 0.03
1.276AspMet: 1.276 ± 0.017
2.316AspAsn: 2.316 ± 0.022
2.439AspPro: 2.439 ± 0.022
1.788AspGln: 1.788 ± 0.025
2.587AspArg: 2.587 ± 0.023
3.747AspSer: 3.747 ± 0.032
2.815AspThr: 2.815 ± 0.035
3.688AspVal: 3.688 ± 0.032
0.703AspTrp: 0.703 ± 0.012
1.673AspTyr: 1.673 ± 0.021
0.0AspXaa: 0.0 ± 0.0
Glu
3.822GluAla: 3.822 ± 0.03
1.305GluCys: 1.305 ± 0.023
3.563GluAsp: 3.563 ± 0.035
5.137GluGlu: 5.137 ± 0.045
2.225GluPhe: 2.225 ± 0.02
3.387GluGly: 3.387 ± 0.03
1.405GluHis: 1.405 ± 0.019
3.197GluIle: 3.197 ± 0.026
4.518GluLys: 4.518 ± 0.039
5.411GluLeu: 5.411 ± 0.039
1.563GluMet: 1.563 ± 0.021
2.832GluAsn: 2.832 ± 0.023
2.096GluPro: 2.096 ± 0.024
2.407GluGln: 2.407 ± 0.026
3.492GluArg: 3.492 ± 0.031
3.998GluSer: 3.998 ± 0.03
3.097GluThr: 3.097 ± 0.026
3.803GluVal: 3.803 ± 0.028
0.734GluTrp: 0.734 ± 0.012
1.82GluTyr: 1.82 ± 0.021
0.001GluXaa: 0.001 ± 0.0
Phe
2.574PheAla: 2.574 ± 0.023
0.984PheCys: 0.984 ± 0.014
2.106PheAsp: 2.106 ± 0.018
2.066PheGlu: 2.066 ± 0.021
1.799PhePhe: 1.799 ± 0.023
2.563PheGly: 2.563 ± 0.024
1.067PheHis: 1.067 ± 0.019
2.345PheIle: 2.345 ± 0.024
2.221PheLys: 2.221 ± 0.021
4.061PheLeu: 4.061 ± 0.033
0.952PheMet: 0.952 ± 0.014
1.695PheAsn: 1.695 ± 0.017
1.839PhePro: 1.839 ± 0.022
1.465PheGln: 1.465 ± 0.018
1.971PheArg: 1.971 ± 0.022
3.223PheSer: 3.223 ± 0.029
2.548PheThr: 2.548 ± 0.025
2.907PheVal: 2.907 ± 0.027
0.529PheTrp: 0.529 ± 0.01
1.521PheTyr: 1.521 ± 0.019
0.0PheXaa: 0.0 ± 0.0
Gly
3.667GlyAla: 3.667 ± 0.037
1.41GlyCys: 1.41 ± 0.025
3.306GlyAsp: 3.306 ± 0.03
3.435GlyGlu: 3.435 ± 0.03
2.711GlyPhe: 2.711 ± 0.026
4.376GlyGly: 4.376 ± 0.052
1.702GlyHis: 1.702 ± 0.028
3.484GlyIle: 3.484 ± 0.033
4.13GlyLys: 4.13 ± 0.041
5.16GlyLeu: 5.16 ± 0.036
1.553GlyMet: 1.553 ± 0.021
2.921GlyAsn: 2.921 ± 0.028
2.491GlyPro: 2.491 ± 0.041
2.23GlyGln: 2.23 ± 0.029
3.375GlyArg: 3.375 ± 0.04
4.799GlySer: 4.799 ± 0.041
3.609GlyThr: 3.609 ± 0.04
4.241GlyVal: 4.241 ± 0.039
0.863GlyTrp: 0.863 ± 0.015
2.342GlyTyr: 2.342 ± 0.03
0.0GlyXaa: 0.0 ± 0.0
His
1.646HisAla: 1.646 ± 0.026
0.724HisCys: 0.724 ± 0.016
1.208HisAsp: 1.208 ± 0.019
1.355HisGlu: 1.355 ± 0.022
1.079HisPhe: 1.079 ± 0.017
1.737HisGly: 1.737 ± 0.029
1.017HisHis: 1.017 ± 0.029
1.386HisIle: 1.386 ± 0.023
1.48HisLys: 1.48 ± 0.019
2.58HisLeu: 2.58 ± 0.033
0.664HisMet: 0.664 ± 0.016
1.065HisAsn: 1.065 ± 0.022
1.58HisPro: 1.58 ± 0.026
1.01HisGln: 1.01 ± 0.018
1.535HisArg: 1.535 ± 0.027
2.0HisSer: 2.0 ± 0.029
1.665HisThr: 1.665 ± 0.031
1.89HisVal: 1.89 ± 0.028
0.36HisTrp: 0.36 ± 0.009
0.982HisTyr: 0.982 ± 0.023
0.0HisXaa: 0.0 ± 0.0
Ile
3.749IleAla: 3.749 ± 0.03
1.32IleCys: 1.32 ± 0.018
2.856IleAsp: 2.856 ± 0.028
2.983IleGlu: 2.983 ± 0.025
2.192IlePhe: 2.192 ± 0.027
3.224IleGly: 3.224 ± 0.03
1.542IleHis: 1.542 ± 0.026
3.054IleIle: 3.054 ± 0.032
3.163IleLys: 3.163 ± 0.024
4.965IleLeu: 4.965 ± 0.036
1.215IleMet: 1.215 ± 0.016
2.33IleAsn: 2.33 ± 0.023
2.977IlePro: 2.977 ± 0.031
2.105IleGln: 2.105 ± 0.022
2.824IleArg: 2.824 ± 0.029
4.198IleSer: 4.198 ± 0.033
3.499IleThr: 3.499 ± 0.039
3.522IleVal: 3.522 ± 0.029
0.679IleTrp: 0.679 ± 0.015
1.784IleTyr: 1.784 ± 0.025
0.001IleXaa: 0.001 ± 0.0
Lys
4.091LysAla: 4.091 ± 0.03
1.393LysCys: 1.393 ± 0.022
3.37LysAsp: 3.37 ± 0.028
4.441LysGlu: 4.441 ± 0.041
2.094LysPhe: 2.094 ± 0.017
3.493LysGly: 3.493 ± 0.034
1.642LysHis: 1.642 ± 0.025
3.137LysIle: 3.137 ± 0.029
4.687LysLys: 4.687 ± 0.047
5.309LysLeu: 5.309 ± 0.037
1.432LysMet: 1.432 ± 0.013
2.636LysAsn: 2.636 ± 0.025
2.945LysPro: 2.945 ± 0.03
2.533LysGln: 2.533 ± 0.025
3.815LysArg: 3.815 ± 0.032
4.213LysSer: 4.213 ± 0.031
3.69LysThr: 3.69 ± 0.034
3.785LysVal: 3.785 ± 0.028
0.747LysTrp: 0.747 ± 0.013
2.055LysTyr: 2.055 ± 0.027
0.001LysXaa: 0.001 ± 0.0
Leu
6.431LeuAla: 6.431 ± 0.052
2.289LeuCys: 2.289 ± 0.037
4.753LeuAsp: 4.753 ± 0.036
5.397LeuGlu: 5.397 ± 0.045
3.736LeuPhe: 3.736 ± 0.033
5.221LeuGly: 5.221 ± 0.038
2.541LeuHis: 2.541 ± 0.033
4.45LeuIle: 4.45 ± 0.036
5.603LeuLys: 5.603 ± 0.033
8.964LeuLeu: 8.964 ± 0.053
2.122LeuMet: 2.122 ± 0.022
3.721LeuAsn: 3.721 ± 0.03
4.859LeuPro: 4.859 ± 0.04
4.053LeuGln: 4.053 ± 0.038
5.224LeuArg: 5.224 ± 0.04
7.27LeuSer: 7.27 ± 0.045
5.238LeuThr: 5.238 ± 0.045
6.302LeuVal: 6.302 ± 0.053
1.125LeuTrp: 1.125 ± 0.017
3.098LeuTyr: 3.098 ± 0.033
0.001LeuXaa: 0.001 ± 0.0
Met
2.1MetAla: 2.1 ± 0.022
0.56MetCys: 0.56 ± 0.014
1.305MetAsp: 1.305 ± 0.019
1.568MetGlu: 1.568 ± 0.019
1.007MetPhe: 1.007 ± 0.017
1.346MetGly: 1.346 ± 0.018
0.521MetHis: 0.521 ± 0.015
1.146MetIle: 1.146 ± 0.018
1.419MetLys: 1.419 ± 0.018
2.092MetLeu: 2.092 ± 0.023
0.618MetMet: 0.618 ± 0.011
1.002MetAsn: 1.002 ± 0.016
1.065MetPro: 1.065 ± 0.018
0.829MetGln: 0.829 ± 0.013
1.319MetArg: 1.319 ± 0.019
1.85MetSer: 1.85 ± 0.021
1.428MetThr: 1.428 ± 0.018
1.636MetVal: 1.636 ± 0.021
0.267MetTrp: 0.267 ± 0.007
0.813MetTyr: 0.813 ± 0.021
0.001MetXaa: 0.001 ± 0.0
Asn
2.67AsnAla: 2.67 ± 0.022
0.984AsnCys: 0.984 ± 0.016
2.116AsnAsp: 2.116 ± 0.023
2.434AsnGlu: 2.434 ± 0.025
1.618AsnPhe: 1.618 ± 0.016
2.941AsnGly: 2.941 ± 0.031
1.058AsnHis: 1.058 ± 0.019
2.644AsnIle: 2.644 ± 0.026
2.748AsnLys: 2.748 ± 0.026
3.691AsnLeu: 3.691 ± 0.029
1.042AsnMet: 1.042 ± 0.016
2.221AsnAsn: 2.221 ± 0.033
2.296AsnPro: 2.296 ± 0.027
1.591AsnGln: 1.591 ± 0.022
2.063AsnArg: 2.063 ± 0.02
3.217AsnSer: 3.217 ± 0.026
2.841AsnThr: 2.841 ± 0.037
2.686AsnVal: 2.686 ± 0.026
0.524AsnTrp: 0.524 ± 0.013
1.413AsnTyr: 1.413 ± 0.02
0.0AsnXaa: 0.0 ± 0.0
Pro
2.828ProAla: 2.828 ± 0.026
1.282ProCys: 1.282 ± 0.029
2.532ProAsp: 2.532 ± 0.029
2.883ProGlu: 2.883 ± 0.026
1.901ProPhe: 1.901 ± 0.026
3.32ProGly: 3.32 ± 0.052
1.255ProHis: 1.255 ± 0.025
2.252ProIle: 2.252 ± 0.029
2.669ProLys: 2.669 ± 0.029
4.349ProLeu: 4.349 ± 0.041
0.986ProMet: 0.986 ± 0.016
1.973ProAsn: 1.973 ± 0.024
3.432ProPro: 3.432 ± 0.055
1.846ProGln: 1.846 ± 0.028
2.608ProArg: 2.608 ± 0.029
4.434ProSer: 4.434 ± 0.051
2.874ProThr: 2.874 ± 0.034
3.339ProVal: 3.339 ± 0.033
0.621ProTrp: 0.621 ± 0.015
1.775ProTyr: 1.775 ± 0.031
0.001ProXaa: 0.001 ± 0.0
Gln
2.82GlnAla: 2.82 ± 0.028
0.877GlnCys: 0.877 ± 0.018
1.939GlnAsp: 1.939 ± 0.021
2.677GlnGlu: 2.677 ± 0.031
1.348GlnPhe: 1.348 ± 0.015
2.587GlnGly: 2.587 ± 0.032
1.101GlnHis: 1.101 ± 0.02
1.914GlnIle: 1.914 ± 0.018
2.262GlnLys: 2.262 ± 0.024
3.42GlnLeu: 3.42 ± 0.027
0.953GlnMet: 0.953 ± 0.014
1.601GlnAsn: 1.601 ± 0.021
1.784GlnPro: 1.784 ± 0.029
2.139GlnGln: 2.139 ± 0.044
2.262GlnArg: 2.262 ± 0.022
2.711GlnSer: 2.711 ± 0.034
2.147GlnThr: 2.147 ± 0.029
2.554GlnVal: 2.554 ± 0.033
0.52GlnTrp: 0.52 ± 0.012
1.359GlnTyr: 1.359 ± 0.026
0.0GlnXaa: 0.0 ± 0.0
Arg
3.259ArgAla: 3.259 ± 0.027
1.249ArgCys: 1.249 ± 0.024
3.023ArgAsp: 3.023 ± 0.029
3.476ArgGlu: 3.476 ± 0.032
2.106ArgPhe: 2.106 ± 0.019
3.253ArgGly: 3.253 ± 0.033
1.654ArgHis: 1.654 ± 0.027
2.823ArgIle: 2.823 ± 0.026
3.789ArgLys: 3.789 ± 0.03
5.002ArgLeu: 5.002 ± 0.037
1.314ArgMet: 1.314 ± 0.015
2.373ArgAsn: 2.373 ± 0.023
2.514ArgPro: 2.514 ± 0.032
2.358ArgGln: 2.358 ± 0.026
3.84ArgArg: 3.84 ± 0.044
3.782ArgSer: 3.782 ± 0.036
2.984ArgThr: 2.984 ± 0.03
3.69ArgVal: 3.69 ± 0.035
0.672ArgTrp: 0.672 ± 0.012
2.088ArgTyr: 2.088 ± 0.026
0.0ArgXaa: 0.0 ± 0.0
Ser
4.6SerAla: 4.6 ± 0.032
1.896SerCys: 1.896 ± 0.027
3.991SerAsp: 3.991 ± 0.034
4.06SerGlu: 4.06 ± 0.035
3.127SerPhe: 3.127 ± 0.028
4.942SerGly: 4.942 ± 0.036
2.145SerHis: 2.145 ± 0.035
4.019SerIle: 4.019 ± 0.03
4.415SerLys: 4.415 ± 0.036
7.641SerLeu: 7.641 ± 0.053
1.724SerMet: 1.724 ± 0.018
3.196SerAsn: 3.196 ± 0.029
4.14SerPro: 4.14 ± 0.045
2.871SerGln: 2.871 ± 0.032
4.206SerArg: 4.206 ± 0.036
7.339SerSer: 7.339 ± 0.057
4.753SerThr: 4.753 ± 0.048
4.938SerVal: 4.938 ± 0.039
1.042SerTrp: 1.042 ± 0.016
2.604SerTyr: 2.604 ± 0.033
0.002SerXaa: 0.002 ± 0.0
Thr
3.822ThrAla: 3.822 ± 0.034
1.704ThrCys: 1.704 ± 0.029
2.903ThrAsp: 2.903 ± 0.033
3.125ThrGlu: 3.125 ± 0.028
2.339ThrPhe: 2.339 ± 0.023
3.93ThrGly: 3.93 ± 0.042
1.588ThrHis: 1.588 ± 0.028
3.285ThrIle: 3.285 ± 0.032
3.298ThrLys: 3.298 ± 0.028
5.523ThrLeu: 5.523 ± 0.048
1.307ThrMet: 1.307 ± 0.021
2.388ThrAsn: 2.388 ± 0.031
3.439ThrPro: 3.439 ± 0.046
2.202ThrGln: 2.202 ± 0.028
3.264ThrArg: 3.264 ± 0.036
5.038ThrSer: 5.038 ± 0.043
3.835ThrThr: 3.835 ± 0.048
4.067ThrVal: 4.067 ± 0.037
0.825ThrTrp: 0.825 ± 0.016
1.879ThrTyr: 1.879 ± 0.026
0.0ThrXaa: 0.0 ± 0.0
Val
4.353ValAla: 4.353 ± 0.044
1.832ValCys: 1.832 ± 0.024
3.435ValAsp: 3.435 ± 0.032
3.617ValGlu: 3.617 ± 0.029
3.181ValPhe: 3.181 ± 0.024
3.566ValGly: 3.566 ± 0.029
1.714ValHis: 1.714 ± 0.025
4.037ValIle: 4.037 ± 0.036
3.744ValLys: 3.744 ± 0.028
6.487ValLeu: 6.487 ± 0.045
1.668ValMet: 1.668 ± 0.021
2.865ValAsn: 2.865 ± 0.03
3.1ValPro: 3.1 ± 0.032
2.442ValGln: 2.442 ± 0.032
3.381ValArg: 3.381 ± 0.03
5.179ValSer: 5.179 ± 0.037
4.572ValThr: 4.572 ± 0.042
4.789ValVal: 4.789 ± 0.038
0.862ValTrp: 0.862 ± 0.017
2.35ValTyr: 2.35 ± 0.028
0.001ValXaa: 0.001 ± 0.0
Trp
0.685TrpAla: 0.685 ± 0.012
0.299TrpCys: 0.299 ± 0.008
0.667TrpAsp: 0.667 ± 0.012
0.66TrpGlu: 0.66 ± 0.012
0.556TrpPhe: 0.556 ± 0.01
0.759TrpGly: 0.759 ± 0.018
0.332TrpHis: 0.332 ± 0.01
0.699TrpIle: 0.699 ± 0.013
0.826TrpLys: 0.826 ± 0.016
1.292TrpLeu: 1.292 ± 0.018
0.36TrpMet: 0.36 ± 0.009
0.568TrpAsn: 0.568 ± 0.01
0.493TrpPro: 0.493 ± 0.013
0.492TrpGln: 0.492 ± 0.01
0.753TrpArg: 0.753 ± 0.012
1.069TrpSer: 1.069 ± 0.021
0.772TrpThr: 0.772 ± 0.013
0.883TrpVal: 0.883 ± 0.016
0.227TrpTrp: 0.227 ± 0.009
0.531TrpTyr: 0.531 ± 0.018
0.0TrpXaa: 0.0 ± 0.0
Tyr
1.837TyrAla: 1.837 ± 0.025
0.955TyrCys: 0.955 ± 0.022
1.729TyrAsp: 1.729 ± 0.024
1.718TyrGlu: 1.718 ± 0.02
1.551TyrPhe: 1.551 ± 0.021
2.289TyrGly: 2.289 ± 0.028
1.097TyrHis: 1.097 ± 0.02
1.946TyrIle: 1.946 ± 0.028
1.968TyrLys: 1.968 ± 0.024
3.194TyrLeu: 3.194 ± 0.036
0.782TyrMet: 0.782 ± 0.014
1.558TyrAsn: 1.558 ± 0.025
1.709TyrPro: 1.709 ± 0.029
1.391TyrGln: 1.391 ± 0.023
1.974TyrArg: 1.974 ± 0.036
2.585TyrSer: 2.585 ± 0.033
2.127TyrThr: 2.127 ± 0.033
2.024TyrVal: 2.024 ± 0.022
0.458TyrTrp: 0.458 ± 0.012
1.333TyrTyr: 1.333 ± 0.03
0.001TyrXaa: 0.001 ± 0.0
Xaa
0.001XaaAla: 0.001 ± 0.0
0.001XaaCys: 0.001 ± 0.0
0.0XaaAsp: 0.0 ± 0.0
0.001XaaGlu: 0.001 ± 0.0
0.0XaaPhe: 0.0 ± 0.0
0.001XaaGly: 0.001 ± 0.0
0.0XaaHis: 0.0 ± 0.0
0.001XaaIle: 0.001 ± 0.0
0.001XaaLys: 0.001 ± 0.0
0.001XaaLeu: 0.001 ± 0.0
0.0XaaMet: 0.0 ± 0.0
0.001XaaAsn: 0.001 ± 0.0
0.0XaaPro: 0.0 ± 0.0
0.0XaaGln: 0.0 ± 0.0
0.001XaaArg: 0.001 ± 0.0
0.001XaaSer: 0.001 ± 0.0
0.001XaaThr: 0.001 ± 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 24444 proteins (8260506 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