Amino acid dipepetide frequency for Microcoleus sp. PCC 7113

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
7.306AlaAla: 7.306 ± 0.079
0.814AlaCys: 0.814 ± 0.02
4.031AlaAsp: 4.031 ± 0.054
5.184AlaGlu: 5.184 ± 0.057
2.987AlaPhe: 2.987 ± 0.035
5.461AlaGly: 5.461 ± 0.072
1.354AlaHis: 1.354 ± 0.031
6.469AlaIle: 6.469 ± 0.068
3.806AlaLys: 3.806 ± 0.043
9.38AlaLeu: 9.38 ± 0.085
1.696AlaMet: 1.696 ± 0.03
3.378AlaAsn: 3.378 ± 0.067
3.162AlaPro: 3.162 ± 0.041
4.88AlaGln: 4.88 ± 0.057
3.752AlaArg: 3.752 ± 0.045
5.266AlaSer: 5.266 ± 0.07
4.774AlaThr: 4.774 ± 0.061
5.602AlaVal: 5.602 ± 0.059
1.055AlaTrp: 1.055 ± 0.025
2.263AlaTyr: 2.263 ± 0.037
0.0AlaXaa: 0.0 ± 0.0
Cys
0.646CysAla: 0.646 ± 0.018
0.18CysCys: 0.18 ± 0.009
0.564CysAsp: 0.564 ± 0.017
0.546CysGlu: 0.546 ± 0.017
0.392CysPhe: 0.392 ± 0.012
0.708CysGly: 0.708 ± 0.02
0.271CysHis: 0.271 ± 0.013
0.563CysIle: 0.563 ± 0.016
0.339CysLys: 0.339 ± 0.013
1.138CysLeu: 1.138 ± 0.028
0.161CysMet: 0.161 ± 0.009
0.354CysAsn: 0.354 ± 0.014
0.559CysPro: 0.559 ± 0.019
0.613CysGln: 0.613 ± 0.017
0.573CysArg: 0.573 ± 0.017
0.628CysSer: 0.628 ± 0.018
0.486CysThr: 0.486 ± 0.015
0.608CysVal: 0.608 ± 0.016
0.141CysTrp: 0.141 ± 0.009
0.366CysTyr: 0.366 ± 0.013
0.0CysXaa: 0.0 ± 0.0
Asp
3.846AspAla: 3.846 ± 0.043
0.509AspCys: 0.509 ± 0.017
2.164AspAsp: 2.164 ± 0.035
3.137AspGlu: 3.137 ± 0.047
2.176AspPhe: 2.176 ± 0.035
3.45AspGly: 3.45 ± 0.055
0.762AspHis: 0.762 ± 0.018
3.196AspIle: 3.196 ± 0.046
2.054AspLys: 2.054 ± 0.037
5.534AspLeu: 5.534 ± 0.058
0.796AspMet: 0.796 ± 0.021
1.729AspAsn: 1.729 ± 0.029
2.331AspPro: 2.331 ± 0.04
1.958AspGln: 1.958 ± 0.03
3.131AspArg: 3.131 ± 0.037
3.171AspSer: 3.171 ± 0.037
2.445AspThr: 2.445 ± 0.048
3.011AspVal: 3.011 ± 0.037
0.936AspTrp: 0.936 ± 0.021
1.839AspTyr: 1.839 ± 0.035
0.0AspXaa: 0.0 ± 0.0
Glu
6.085GluAla: 6.085 ± 0.072
0.496GluCys: 0.496 ± 0.019
2.796GluAsp: 2.796 ± 0.037
4.405GluGlu: 4.405 ± 0.069
2.394GluPhe: 2.394 ± 0.035
3.555GluGly: 3.555 ± 0.047
1.122GluHis: 1.122 ± 0.025
4.249GluIle: 4.249 ± 0.056
3.203GluLys: 3.203 ± 0.045
7.293GluLeu: 7.293 ± 0.07
1.344GluMet: 1.344 ± 0.027
2.32GluAsn: 2.32 ± 0.036
2.746GluPro: 2.746 ± 0.045
4.201GluGln: 4.201 ± 0.048
3.986GluArg: 3.986 ± 0.051
3.699GluSer: 3.699 ± 0.05
3.464GluThr: 3.464 ± 0.042
4.399GluVal: 4.399 ± 0.052
0.818GluTrp: 0.818 ± 0.021
1.724GluTyr: 1.724 ± 0.032
0.0GluXaa: 0.0 ± 0.0
Phe
2.885PheAla: 2.885 ± 0.039
0.509PheCys: 0.509 ± 0.016
2.141PheAsp: 2.141 ± 0.03
2.259PheGlu: 2.259 ± 0.035
1.604PhePhe: 1.604 ± 0.032
2.722PheGly: 2.722 ± 0.038
0.737PheHis: 0.737 ± 0.02
2.094PheIle: 2.094 ± 0.037
1.583PheLys: 1.583 ± 0.029
4.052PheLeu: 4.052 ± 0.048
0.67PheMet: 0.67 ± 0.017
1.623PheAsn: 1.623 ± 0.031
1.771PhePro: 1.771 ± 0.029
1.76PheGln: 1.76 ± 0.028
1.867PheArg: 1.867 ± 0.032
2.858PheSer: 2.858 ± 0.043
2.184PheThr: 2.184 ± 0.032
2.475PheVal: 2.475 ± 0.034
0.682PheTrp: 0.682 ± 0.018
1.286PheTyr: 1.286 ± 0.025
0.0PheXaa: 0.0 ± 0.0
Gly
5.107GlyAla: 5.107 ± 0.08
0.787GlyCys: 0.787 ± 0.02
3.195GlyAsp: 3.195 ± 0.058
4.21GlyGlu: 4.21 ± 0.054
2.827GlyPhe: 2.827 ± 0.039
4.966GlyGly: 4.966 ± 0.106
1.275GlyHis: 1.275 ± 0.032
4.845GlyIle: 4.845 ± 0.06
3.782GlyLys: 3.782 ± 0.053
7.002GlyLeu: 7.002 ± 0.061
1.528GlyMet: 1.528 ± 0.031
3.161GlyAsn: 3.161 ± 0.086
1.314GlyPro: 1.314 ± 0.029
3.341GlyGln: 3.341 ± 0.047
3.475GlyArg: 3.475 ± 0.042
4.315GlySer: 4.315 ± 0.067
4.243GlyThr: 4.243 ± 0.077
4.869GlyVal: 4.869 ± 0.059
1.16GlyTrp: 1.16 ± 0.026
2.325GlyTyr: 2.325 ± 0.036
0.0GlyXaa: 0.0 ± 0.0
His
1.098HisAla: 1.098 ± 0.028
0.261HisCys: 0.261 ± 0.012
0.74HisAsp: 0.74 ± 0.021
1.016HisGlu: 1.016 ± 0.022
0.781HisPhe: 0.781 ± 0.021
1.092HisGly: 1.092 ± 0.022
0.602HisHis: 0.602 ± 0.021
0.991HisIle: 0.991 ± 0.025
0.716HisLys: 0.716 ± 0.019
2.331HisLeu: 2.331 ± 0.037
0.231HisMet: 0.231 ± 0.01
0.693HisAsn: 0.693 ± 0.018
1.41HisPro: 1.41 ± 0.03
1.264HisGln: 1.264 ± 0.025
1.183HisArg: 1.183 ± 0.025
1.287HisSer: 1.287 ± 0.027
0.939HisThr: 0.939 ± 0.024
0.857HisVal: 0.857 ± 0.021
0.377HisTrp: 0.377 ± 0.013
0.695HisTyr: 0.695 ± 0.018
0.0HisXaa: 0.0 ± 0.0
Ile
6.36IleAla: 6.36 ± 0.064
0.681IleCys: 0.681 ± 0.019
3.297IleAsp: 3.297 ± 0.04
4.245IleGlu: 4.245 ± 0.05
2.302IlePhe: 2.302 ± 0.04
4.261IleGly: 4.261 ± 0.047
1.231IleHis: 1.231 ± 0.028
3.041IleIle: 3.041 ± 0.045
2.527IleLys: 2.527 ± 0.038
6.294IleLeu: 6.294 ± 0.064
0.758IleMet: 0.758 ± 0.018
2.579IleAsn: 2.579 ± 0.044
3.433IlePro: 3.433 ± 0.04
3.051IleGln: 3.051 ± 0.039
3.233IleArg: 3.233 ± 0.037
3.972IleSer: 3.972 ± 0.049
3.528IleThr: 3.528 ± 0.056
3.944IleVal: 3.944 ± 0.048
0.831IleTrp: 0.831 ± 0.021
1.727IleTyr: 1.727 ± 0.029
0.0IleXaa: 0.0 ± 0.0
Lys
4.019LysAla: 4.019 ± 0.054
0.28LysCys: 0.28 ± 0.011
2.108LysAsp: 2.108 ± 0.034
2.743LysGlu: 2.743 ± 0.045
1.497LysPhe: 1.497 ± 0.026
2.777LysGly: 2.777 ± 0.038
0.814LysHis: 0.814 ± 0.022
2.978LysIle: 2.978 ± 0.043
2.156LysLys: 2.156 ± 0.043
4.877LysLeu: 4.877 ± 0.053
0.869LysMet: 0.869 ± 0.02
1.759LysAsn: 1.759 ± 0.031
2.576LysPro: 2.576 ± 0.041
2.641LysGln: 2.641 ± 0.039
2.57LysArg: 2.57 ± 0.04
2.786LysSer: 2.786 ± 0.039
2.729LysThr: 2.729 ± 0.043
2.966LysVal: 2.966 ± 0.044
0.478LysTrp: 0.478 ± 0.016
1.14LysTyr: 1.14 ± 0.026
0.0LysXaa: 0.0 ± 0.0
Leu
9.727LeuAla: 9.727 ± 0.084
1.104LeuCys: 1.104 ± 0.025
5.339LeuAsp: 5.339 ± 0.051
7.529LeuGlu: 7.529 ± 0.067
3.678LeuPhe: 3.678 ± 0.043
7.704LeuGly: 7.704 ± 0.08
1.9LeuHis: 1.9 ± 0.033
6.519LeuIle: 6.519 ± 0.062
5.615LeuLys: 5.615 ± 0.06
11.535LeuLeu: 11.535 ± 0.096
2.273LeuMet: 2.273 ± 0.037
4.628LeuAsn: 4.628 ± 0.046
5.878LeuPro: 5.878 ± 0.056
5.686LeuGln: 5.686 ± 0.061
6.104LeuArg: 6.104 ± 0.066
8.053LeuSer: 8.053 ± 0.071
6.66LeuThr: 6.66 ± 0.063
7.284LeuVal: 7.284 ± 0.071
1.598LeuTrp: 1.598 ± 0.032
2.794LeuTyr: 2.794 ± 0.041
0.0LeuXaa: 0.0 ± 0.0
Met
1.816MetAla: 1.816 ± 0.031
0.121MetCys: 0.121 ± 0.008
0.816MetAsp: 0.816 ± 0.02
1.098MetGlu: 1.098 ± 0.025
0.538MetPhe: 0.538 ± 0.017
1.463MetGly: 1.463 ± 0.027
0.32MetHis: 0.32 ± 0.013
1.026MetIle: 1.026 ± 0.023
0.933MetLys: 0.933 ± 0.022
1.858MetLeu: 1.858 ± 0.034
0.46MetMet: 0.46 ± 0.016
0.873MetAsn: 0.873 ± 0.019
1.07MetPro: 1.07 ± 0.022
0.891MetGln: 0.891 ± 0.019
1.007MetArg: 1.007 ± 0.023
1.355MetSer: 1.355 ± 0.024
1.32MetThr: 1.32 ± 0.025
1.309MetVal: 1.309 ± 0.028
0.161MetTrp: 0.161 ± 0.009
0.318MetTyr: 0.318 ± 0.012
0.0MetXaa: 0.0 ± 0.0
Asn
2.92AsnAla: 2.92 ± 0.051
0.413AsnCys: 0.413 ± 0.014
1.597AsnAsp: 1.597 ± 0.036
1.802AsnGlu: 1.802 ± 0.027
1.623AsnPhe: 1.623 ± 0.028
2.586AsnGly: 2.586 ± 0.06
0.834AsnHis: 0.834 ± 0.021
2.281AsnIle: 2.281 ± 0.047
1.386AsnLys: 1.386 ± 0.031
5.354AsnLeu: 5.354 ± 0.085
0.554AsnMet: 0.554 ± 0.017
1.618AsnAsn: 1.618 ± 0.045
3.023AsnPro: 3.023 ± 0.044
2.678AsnGln: 2.678 ± 0.034
2.426AsnArg: 2.426 ± 0.038
2.804AsnSer: 2.804 ± 0.048
2.086AsnThr: 2.086 ± 0.045
2.187AsnVal: 2.187 ± 0.043
0.687AsnTrp: 0.687 ± 0.016
1.302AsnTyr: 1.302 ± 0.03
0.0AsnXaa: 0.0 ± 0.0
Pro
3.4ProAla: 3.4 ± 0.04
0.375ProCys: 0.375 ± 0.015
3.192ProAsp: 3.192 ± 0.045
4.086ProGlu: 4.086 ± 0.048
1.83ProPhe: 1.83 ± 0.033
3.081ProGly: 3.081 ± 0.052
0.92ProHis: 0.92 ± 0.025
3.075ProIle: 3.075 ± 0.04
2.292ProLys: 2.292 ± 0.038
5.051ProLeu: 5.051 ± 0.056
0.898ProMet: 0.898 ± 0.02
2.323ProAsn: 2.323 ± 0.043
2.71ProPro: 2.71 ± 0.048
2.617ProGln: 2.617 ± 0.041
1.898ProArg: 1.898 ± 0.031
3.458ProSer: 3.458 ± 0.053
3.309ProThr: 3.309 ± 0.054
3.508ProVal: 3.508 ± 0.052
0.638ProTrp: 0.638 ± 0.019
1.306ProTyr: 1.306 ± 0.03
0.0ProXaa: 0.0 ± 0.0
Gln
5.279GlnAla: 5.279 ± 0.065
0.408GlnCys: 0.408 ± 0.016
2.22GlnAsp: 2.22 ± 0.036
3.827GlnGlu: 3.827 ± 0.049
1.883GlnPhe: 1.883 ± 0.032
3.645GlnGly: 3.645 ± 0.047
0.904GlnHis: 0.904 ± 0.019
3.306GlnIle: 3.306 ± 0.034
2.614GlnLys: 2.614 ± 0.037
6.729GlnLeu: 6.729 ± 0.065
1.121GlnMet: 1.121 ± 0.024
1.938GlnAsn: 1.938 ± 0.035
2.885GlnPro: 2.885 ± 0.05
3.915GlnGln: 3.915 ± 0.065
3.236GlnArg: 3.236 ± 0.043
3.391GlnSer: 3.391 ± 0.048
3.04GlnThr: 3.04 ± 0.044
4.03GlnVal: 4.03 ± 0.042
0.767GlnTrp: 0.767 ± 0.019
1.282GlnTyr: 1.282 ± 0.028
0.0GlnXaa: 0.0 ± 0.0
Arg
3.701ArgAla: 3.701 ± 0.049
0.588ArgCys: 0.588 ± 0.019
2.68ArgAsp: 2.68 ± 0.038
3.643ArgGlu: 3.643 ± 0.045
2.276ArgPhe: 2.276 ± 0.034
3.169ArgGly: 3.169 ± 0.044
1.116ArgHis: 1.116 ± 0.02
3.281ArgIle: 3.281 ± 0.04
2.334ArgLys: 2.334 ± 0.036
6.481ArgLeu: 6.481 ± 0.066
1.093ArgMet: 1.093 ± 0.027
2.038ArgAsn: 2.038 ± 0.031
2.196ArgPro: 2.196 ± 0.035
3.618ArgGln: 3.618 ± 0.045
3.422ArgArg: 3.422 ± 0.049
3.446ArgSer: 3.446 ± 0.04
2.844ArgThr: 2.844 ± 0.038
3.726ArgVal: 3.726 ± 0.048
0.92ArgTrp: 0.92 ± 0.026
1.987ArgTyr: 1.987 ± 0.034
0.0ArgXaa: 0.0 ± 0.0
Ser
4.91SerAla: 4.91 ± 0.051
0.642SerCys: 0.642 ± 0.017
3.299SerAsp: 3.299 ± 0.043
4.002SerGlu: 4.002 ± 0.045
2.525SerPhe: 2.525 ± 0.04
4.79SerGly: 4.79 ± 0.069
1.301SerHis: 1.301 ± 0.025
3.633SerIle: 3.633 ± 0.046
2.544SerLys: 2.544 ± 0.039
7.679SerLeu: 7.679 ± 0.064
1.217SerMet: 1.217 ± 0.023
2.651SerAsn: 2.651 ± 0.048
3.95SerPro: 3.95 ± 0.064
3.857SerGln: 3.857 ± 0.049
3.5SerArg: 3.5 ± 0.044
4.867SerSer: 4.867 ± 0.06
3.776SerThr: 3.776 ± 0.054
4.29SerVal: 4.29 ± 0.051
0.933SerTrp: 0.933 ± 0.018
1.748SerTyr: 1.748 ± 0.027
0.0SerXaa: 0.0 ± 0.0
Thr
4.789ThrAla: 4.789 ± 0.059
0.466ThrCys: 0.466 ± 0.015
2.705ThrAsp: 2.705 ± 0.042
3.282ThrGlu: 3.282 ± 0.043
2.064ThrPhe: 2.064 ± 0.038
4.627ThrGly: 4.627 ± 0.078
1.111ThrHis: 1.111 ± 0.024
3.375ThrIle: 3.375 ± 0.047
2.064ThrLys: 2.064 ± 0.034
6.881ThrLeu: 6.881 ± 0.066
0.824ThrMet: 0.824 ± 0.023
2.116ThrAsn: 2.116 ± 0.045
3.892ThrPro: 3.892 ± 0.063
3.276ThrGln: 3.276 ± 0.037
2.582ThrArg: 2.582 ± 0.04
3.582ThrSer: 3.582 ± 0.048
3.401ThrThr: 3.401 ± 0.066
4.049ThrVal: 4.049 ± 0.053
0.725ThrTrp: 0.725 ± 0.02
1.489ThrTyr: 1.489 ± 0.031
0.0ThrXaa: 0.0 ± 0.0
Val
5.81ValAla: 5.81 ± 0.056
0.664ValCys: 0.664 ± 0.019
3.254ValAsp: 3.254 ± 0.033
4.649ValGlu: 4.649 ± 0.053
2.54ValPhe: 2.54 ± 0.038
4.675ValGly: 4.675 ± 0.054
1.068ValHis: 1.068 ± 0.025
4.049ValIle: 4.049 ± 0.053
3.039ValLys: 3.039 ± 0.042
6.87ValLeu: 6.87 ± 0.07
1.475ValMet: 1.475 ± 0.029
2.693ValAsn: 2.693 ± 0.04
3.162ValPro: 3.162 ± 0.044
3.096ValGln: 3.096 ± 0.038
3.648ValArg: 3.648 ± 0.049
4.397ValSer: 4.397 ± 0.054
3.927ValThr: 3.927 ± 0.049
4.919ValVal: 4.919 ± 0.052
0.92ValTrp: 0.92 ± 0.024
1.811ValTyr: 1.811 ± 0.03
0.0ValXaa: 0.0 ± 0.0
Trp
0.94TrpAla: 0.94 ± 0.021
0.146TrpCys: 0.146 ± 0.007
0.684TrpAsp: 0.684 ± 0.024
0.917TrpGlu: 0.917 ± 0.023
0.589TrpPhe: 0.589 ± 0.02
0.992TrpGly: 0.992 ± 0.025
0.316TrpHis: 0.316 ± 0.013
0.802TrpIle: 0.802 ± 0.022
0.646TrpLys: 0.646 ± 0.02
1.871TrpLeu: 1.871 ± 0.038
0.384TrpMet: 0.384 ± 0.014
0.627TrpAsn: 0.627 ± 0.02
0.335TrpPro: 0.335 ± 0.013
1.149TrpGln: 1.149 ± 0.024
0.888TrpArg: 0.888 ± 0.019
0.921TrpSer: 0.921 ± 0.022
0.662TrpThr: 0.662 ± 0.018
1.095TrpVal: 1.095 ± 0.026
0.253TrpTrp: 0.253 ± 0.013
0.397TrpTyr: 0.397 ± 0.018
0.0TrpXaa: 0.0 ± 0.0
Tyr
1.976TyrAla: 1.976 ± 0.035
0.389TyrCys: 0.389 ± 0.012
1.35TyrAsp: 1.35 ± 0.029
1.721TyrGlu: 1.721 ± 0.029
1.257TyrPhe: 1.257 ± 0.025
2.005TyrGly: 2.005 ± 0.043
0.61TyrHis: 0.61 ± 0.016
1.521TyrIle: 1.521 ± 0.028
1.13TyrLys: 1.13 ± 0.027
3.395TyrLeu: 3.395 ± 0.041
0.402TyrMet: 0.402 ± 0.013
1.06TyrAsn: 1.06 ± 0.023
1.563TyrPro: 1.563 ± 0.03
1.926TyrGln: 1.926 ± 0.028
2.08TyrArg: 2.08 ± 0.036
1.858TyrSer: 1.858 ± 0.03
1.483TyrThr: 1.483 ± 0.025
1.537TyrVal: 1.537 ± 0.029
0.535TyrTrp: 0.535 ± 0.016
1.003TyrTyr: 1.003 ± 0.025
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 6397 proteins (2155269 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