Amino acid dipepetide frequency for Streptomyces sp. Z022

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
21.255AlaAla: 21.255 ± 0.149
1.128AlaCys: 1.128 ± 0.026
8.377AlaAsp: 8.377 ± 0.069
8.689AlaGlu: 8.689 ± 0.099
3.519AlaPhe: 3.519 ± 0.046
13.957AlaGly: 13.957 ± 0.095
3.183AlaHis: 3.183 ± 0.045
3.062AlaIle: 3.062 ± 0.05
2.524AlaLys: 2.524 ± 0.047
14.716AlaLeu: 14.716 ± 0.094
2.341AlaMet: 2.341 ± 0.038
1.755AlaAsn: 1.755 ± 0.03
7.442AlaPro: 7.442 ± 0.099
3.678AlaGln: 3.678 ± 0.05
11.123AlaArg: 11.123 ± 0.103
5.698AlaSer: 5.698 ± 0.052
6.967AlaThr: 6.967 ± 0.073
12.667AlaVal: 12.667 ± 0.093
1.87AlaTrp: 1.87 ± 0.031
2.813AlaTyr: 2.813 ± 0.04
0.0AlaXaa: 0.0 ± 0.0
Cys
1.108CysAla: 1.108 ± 0.027
0.096CysCys: 0.096 ± 0.007
0.479CysAsp: 0.479 ± 0.016
0.407CysGlu: 0.407 ± 0.013
0.216CysPhe: 0.216 ± 0.01
0.959CysGly: 0.959 ± 0.023
0.205CysHis: 0.205 ± 0.01
0.148CysIle: 0.148 ± 0.009
0.112CysLys: 0.112 ± 0.007
0.804CysLeu: 0.804 ± 0.021
0.128CysMet: 0.128 ± 0.007
0.126CysAsn: 0.126 ± 0.009
0.524CysPro: 0.524 ± 0.016
0.159CysGln: 0.159 ± 0.009
0.644CysArg: 0.644 ± 0.019
0.422CysSer: 0.422 ± 0.013
0.532CysThr: 0.532 ± 0.016
0.683CysVal: 0.683 ± 0.02
0.129CysTrp: 0.129 ± 0.007
0.153CysTyr: 0.153 ± 0.008
0.0CysXaa: 0.0 ± 0.0
Asp
7.749AspAla: 7.749 ± 0.083
0.412AspCys: 0.412 ± 0.016
3.539AspAsp: 3.539 ± 0.049
3.699AspGlu: 3.699 ± 0.05
1.576AspPhe: 1.576 ± 0.027
6.495AspGly: 6.495 ± 0.065
1.492AspHis: 1.492 ± 0.029
1.865AspIle: 1.865 ± 0.032
1.079AspLys: 1.079 ± 0.029
6.232AspLeu: 6.232 ± 0.056
0.801AspMet: 0.801 ± 0.02
0.938AspAsn: 0.938 ± 0.025
4.509AspPro: 4.509 ± 0.055
1.464AspGln: 1.464 ± 0.028
5.219AspArg: 5.219 ± 0.051
2.434AspSer: 2.434 ± 0.034
3.403AspThr: 3.403 ± 0.045
4.731AspVal: 4.731 ± 0.055
1.025AspTrp: 1.025 ± 0.025
1.075AspTyr: 1.075 ± 0.024
0.0AspXaa: 0.0 ± 0.0
Glu
7.218GluAla: 7.218 ± 0.084
0.371GluCys: 0.371 ± 0.012
2.855GluAsp: 2.855 ± 0.041
3.562GluGlu: 3.562 ± 0.062
1.405GluPhe: 1.405 ± 0.028
4.161GluGly: 4.161 ± 0.05
1.508GluHis: 1.508 ± 0.027
2.102GluIle: 2.102 ± 0.039
1.338GluLys: 1.338 ± 0.033
6.657GluLeu: 6.657 ± 0.081
0.854GluMet: 0.854 ± 0.024
1.009GluAsn: 1.009 ± 0.023
3.412GluPro: 3.412 ± 0.047
2.149GluGln: 2.149 ± 0.033
5.543GluArg: 5.543 ± 0.054
2.354GluSer: 2.354 ± 0.038
2.847GluThr: 2.847 ± 0.04
4.377GluVal: 4.377 ± 0.052
0.742GluTrp: 0.742 ± 0.02
1.087GluTyr: 1.087 ± 0.022
0.0GluXaa: 0.0 ± 0.0
Phe
3.6PheAla: 3.6 ± 0.04
0.257PheCys: 0.257 ± 0.012
1.924PheAsp: 1.924 ± 0.033
1.408PheGlu: 1.408 ± 0.028
0.854PhePhe: 0.854 ± 0.02
2.912PheGly: 2.912 ± 0.045
0.66PheHis: 0.66 ± 0.018
0.629PheIle: 0.629 ± 0.018
0.469PheLys: 0.469 ± 0.018
2.609PheLeu: 2.609 ± 0.04
0.377PheMet: 0.377 ± 0.014
0.5PheAsn: 0.5 ± 0.019
1.425PhePro: 1.425 ± 0.027
0.671PheGln: 0.671 ± 0.019
1.955PheArg: 1.955 ± 0.032
1.393PheSer: 1.393 ± 0.031
1.988PheThr: 1.988 ± 0.036
2.215PheVal: 2.215 ± 0.034
0.4PheTrp: 0.4 ± 0.015
0.549PheTyr: 0.549 ± 0.016
0.0PheXaa: 0.0 ± 0.0
Gly
11.231GlyAla: 11.231 ± 0.087
0.859GlyCys: 0.859 ± 0.021
5.213GlyAsp: 5.213 ± 0.056
5.02GlyGlu: 5.02 ± 0.063
2.863GlyPhe: 2.863 ± 0.049
8.963GlyGly: 8.963 ± 0.099
2.636GlyHis: 2.636 ± 0.038
3.301GlyIle: 3.301 ± 0.047
2.246GlyLys: 2.246 ± 0.048
9.605GlyLeu: 9.605 ± 0.091
1.931GlyMet: 1.931 ± 0.037
1.718GlyAsn: 1.718 ± 0.035
5.518GlyPro: 5.518 ± 0.07
2.677GlyGln: 2.677 ± 0.042
8.501GlyArg: 8.501 ± 0.068
5.256GlySer: 5.256 ± 0.07
6.982GlyThr: 6.982 ± 0.071
7.58GlyVal: 7.58 ± 0.065
1.685GlyTrp: 1.685 ± 0.028
2.273GlyTyr: 2.273 ± 0.038
0.0GlyXaa: 0.0 ± 0.0
His
2.884HisAla: 2.884 ± 0.043
0.214HisCys: 0.214 ± 0.01
1.387HisAsp: 1.387 ± 0.031
1.265HisGlu: 1.265 ± 0.029
0.656HisPhe: 0.656 ± 0.018
2.674HisGly: 2.674 ± 0.036
0.758HisHis: 0.758 ± 0.024
0.685HisIle: 0.685 ± 0.018
0.349HisLys: 0.349 ± 0.013
2.58HisLeu: 2.58 ± 0.035
0.368HisMet: 0.368 ± 0.014
0.376HisAsn: 0.376 ± 0.012
1.938HisPro: 1.938 ± 0.033
0.674HisGln: 0.674 ± 0.018
2.319HisArg: 2.319 ± 0.038
1.051HisSer: 1.051 ± 0.021
1.514HisThr: 1.514 ± 0.028
1.791HisVal: 1.791 ± 0.028
0.391HisTrp: 0.391 ± 0.016
0.488HisTyr: 0.488 ± 0.016
0.0HisXaa: 0.0 ± 0.0
Ile
4.427IleAla: 4.427 ± 0.061
0.276IleCys: 0.276 ± 0.011
2.056IleAsp: 2.056 ± 0.04
1.854IleGlu: 1.854 ± 0.032
0.625IlePhe: 0.625 ± 0.019
3.333IleGly: 3.333 ± 0.046
0.58IleHis: 0.58 ± 0.018
0.804IleIle: 0.804 ± 0.027
0.624IleLys: 0.624 ± 0.021
2.317IleLeu: 2.317 ± 0.04
0.395IleMet: 0.395 ± 0.014
0.614IleAsn: 0.614 ± 0.02
1.625IlePro: 1.625 ± 0.028
0.659IleGln: 0.659 ± 0.019
2.257IleArg: 2.257 ± 0.039
1.485IleSer: 1.485 ± 0.03
2.128IleThr: 2.128 ± 0.034
2.542IleVal: 2.542 ± 0.038
0.338IleTrp: 0.338 ± 0.014
0.478IleTyr: 0.478 ± 0.015
0.0IleXaa: 0.0 ± 0.0
Lys
2.71LysAla: 2.71 ± 0.045
0.106LysCys: 0.106 ± 0.007
1.244LysAsp: 1.244 ± 0.029
1.041LysGlu: 1.041 ± 0.028
0.427LysPhe: 0.427 ± 0.016
1.777LysGly: 1.777 ± 0.041
0.388LysHis: 0.388 ± 0.014
0.791LysIle: 0.791 ± 0.021
0.799LysLys: 0.799 ± 0.031
1.851LysLeu: 1.851 ± 0.041
0.348LysMet: 0.348 ± 0.013
0.499LysAsn: 0.499 ± 0.018
1.217LysPro: 1.217 ± 0.03
0.645LysGln: 0.645 ± 0.023
1.338LysArg: 1.338 ± 0.029
1.044LysSer: 1.044 ± 0.025
1.127LysThr: 1.127 ± 0.03
1.739LysVal: 1.739 ± 0.034
0.244LysTrp: 0.244 ± 0.012
0.428LysTyr: 0.428 ± 0.018
0.0LysXaa: 0.0 ± 0.0
Leu
15.374LeuAla: 15.374 ± 0.117
0.866LeuCys: 0.866 ± 0.02
6.767LeuAsp: 6.767 ± 0.065
4.701LeuGlu: 4.701 ± 0.056
2.592LeuPhe: 2.592 ± 0.042
9.243LeuGly: 9.243 ± 0.073
2.448LeuHis: 2.448 ± 0.04
3.043LeuIle: 3.043 ± 0.049
1.951LeuLys: 1.951 ± 0.037
11.528LeuLeu: 11.528 ± 0.109
1.612LeuMet: 1.612 ± 0.033
1.613LeuAsn: 1.613 ± 0.029
6.737LeuPro: 6.737 ± 0.07
2.101LeuGln: 2.101 ± 0.036
9.085LeuArg: 9.085 ± 0.081
5.135LeuSer: 5.135 ± 0.057
7.146LeuThr: 7.146 ± 0.069
8.75LeuVal: 8.75 ± 0.066
1.305LeuTrp: 1.305 ± 0.027
1.896LeuTyr: 1.896 ± 0.031
0.0LeuXaa: 0.0 ± 0.0
Met
2.15MetAla: 2.15 ± 0.034
0.14MetCys: 0.14 ± 0.008
0.854MetAsp: 0.854 ± 0.021
0.729MetGlu: 0.729 ± 0.017
0.432MetPhe: 0.432 ± 0.015
1.249MetGly: 1.249 ± 0.032
0.349MetHis: 0.349 ± 0.013
0.611MetIle: 0.611 ± 0.016
0.383MetLys: 0.383 ± 0.015
1.581MetLeu: 1.581 ± 0.029
0.281MetMet: 0.281 ± 0.013
0.422MetAsn: 0.422 ± 0.013
1.075MetPro: 1.075 ± 0.024
0.437MetGln: 0.437 ± 0.014
1.421MetArg: 1.421 ± 0.026
1.253MetSer: 1.253 ± 0.025
1.52MetThr: 1.52 ± 0.034
1.229MetVal: 1.229 ± 0.027
0.217MetTrp: 0.217 ± 0.01
0.324MetTyr: 0.324 ± 0.013
0.0MetXaa: 0.0 ± 0.0
Asn
2.105AsnAla: 2.105 ± 0.034
0.154AsnCys: 0.154 ± 0.009
0.9AsnAsp: 0.9 ± 0.023
0.752AsnGlu: 0.752 ± 0.021
0.446AsnPhe: 0.446 ± 0.015
1.852AsnGly: 1.852 ± 0.04
0.387AsnHis: 0.387 ± 0.013
0.619AsnIle: 0.619 ± 0.02
0.394AsnLys: 0.394 ± 0.017
1.572AsnLeu: 1.572 ± 0.027
0.295AsnMet: 0.295 ± 0.013
0.377AsnAsn: 0.377 ± 0.016
1.278AsnPro: 1.278 ± 0.025
0.483AsnGln: 0.483 ± 0.015
1.263AsnArg: 1.263 ± 0.027
0.86AsnSer: 0.86 ± 0.021
1.085AsnThr: 1.085 ± 0.024
1.291AsnVal: 1.291 ± 0.027
0.291AsnTrp: 0.291 ± 0.012
0.386AsnTyr: 0.386 ± 0.015
0.0AsnXaa: 0.0 ± 0.0
Pro
9.565ProAla: 9.565 ± 0.121
0.39ProCys: 0.39 ± 0.017
4.625ProAsp: 4.625 ± 0.059
4.235ProGlu: 4.235 ± 0.046
1.505ProPhe: 1.505 ± 0.028
7.159ProGly: 7.159 ± 0.081
1.543ProHis: 1.543 ± 0.029
1.084ProIle: 1.084 ± 0.023
1.016ProLys: 1.016 ± 0.026
5.527ProLeu: 5.527 ± 0.062
0.95ProMet: 0.95 ± 0.022
0.817ProAsn: 0.817 ± 0.021
3.668ProPro: 3.668 ± 0.07
1.771ProGln: 1.771 ± 0.037
4.367ProArg: 4.367 ± 0.052
3.046ProSer: 3.046 ± 0.043
3.089ProThr: 3.089 ± 0.038
5.807ProVal: 5.807 ± 0.054
0.903ProTrp: 0.903 ± 0.021
1.469ProTyr: 1.469 ± 0.031
0.0ProXaa: 0.0 ± 0.0
Gln
3.822GlnAla: 3.822 ± 0.048
0.167GlnCys: 0.167 ± 0.011
1.445GlnAsp: 1.445 ± 0.027
1.435GlnGlu: 1.435 ± 0.027
0.64GlnPhe: 0.64 ± 0.019
2.294GlnGly: 2.294 ± 0.035
0.683GlnHis: 0.683 ± 0.019
1.023GlnIle: 1.023 ± 0.024
0.602GlnLys: 0.602 ± 0.017
2.814GlnLeu: 2.814 ± 0.039
0.46GlnMet: 0.46 ± 0.014
0.497GlnAsn: 0.497 ± 0.019
1.689GlnPro: 1.689 ± 0.042
1.248GlnGln: 1.248 ± 0.036
2.407GlnArg: 2.407 ± 0.044
1.179GlnSer: 1.179 ± 0.026
1.291GlnThr: 1.291 ± 0.026
2.311GlnVal: 2.311 ± 0.039
0.459GlnTrp: 0.459 ± 0.015
0.609GlnTyr: 0.609 ± 0.018
0.0GlnXaa: 0.0 ± 0.0
Arg
10.549ArgAla: 10.549 ± 0.092
0.63ArgCys: 0.63 ± 0.019
4.535ArgAsp: 4.535 ± 0.049
4.812ArgGlu: 4.812 ± 0.061
2.427ArgPhe: 2.427 ± 0.035
6.149ArgGly: 6.149 ± 0.066
2.4ArgHis: 2.4 ± 0.042
3.14ArgIle: 3.14 ± 0.039
1.59ArgLys: 1.59 ± 0.029
9.504ArgLeu: 9.504 ± 0.08
1.752ArgMet: 1.752 ± 0.028
1.361ArgAsn: 1.361 ± 0.025
5.592ArgPro: 5.592 ± 0.072
2.507ArgGln: 2.507 ± 0.039
8.423ArgArg: 8.423 ± 0.094
4.063ArgSer: 4.063 ± 0.051
5.846ArgThr: 5.846 ± 0.062
6.287ArgVal: 6.287 ± 0.062
1.453ArgTrp: 1.453 ± 0.031
1.865ArgTyr: 1.865 ± 0.033
0.0ArgXaa: 0.0 ± 0.0
Ser
6.597SerAla: 6.597 ± 0.064
0.394SerCys: 0.394 ± 0.016
2.521SerAsp: 2.521 ± 0.032
2.158SerGlu: 2.158 ± 0.035
1.466SerPhe: 1.466 ± 0.028
5.903SerGly: 5.903 ± 0.066
1.039SerHis: 1.039 ± 0.025
1.219SerIle: 1.219 ± 0.028
0.901SerLys: 0.901 ± 0.023
4.738SerLeu: 4.738 ± 0.059
0.993SerMet: 0.993 ± 0.023
0.793SerAsn: 0.793 ± 0.02
3.095SerPro: 3.095 ± 0.043
1.161SerGln: 1.161 ± 0.024
3.694SerArg: 3.694 ± 0.043
2.57SerSer: 2.57 ± 0.042
2.907SerThr: 2.907 ± 0.044
4.177SerVal: 4.177 ± 0.051
0.826SerTrp: 0.826 ± 0.022
1.198SerTyr: 1.198 ± 0.027
0.0SerXaa: 0.0 ± 0.0
Thr
9.387ThrAla: 9.387 ± 0.078
0.419ThrCys: 0.419 ± 0.014
3.792ThrAsp: 3.792 ± 0.052
3.304ThrGlu: 3.304 ± 0.04
1.601ThrPhe: 1.601 ± 0.03
7.29ThrGly: 7.29 ± 0.067
1.248ThrHis: 1.248 ± 0.026
1.518ThrIle: 1.518 ± 0.03
1.029ThrLys: 1.029 ± 0.025
5.793ThrLeu: 5.793 ± 0.062
0.881ThrMet: 0.881 ± 0.024
0.942ThrAsn: 0.942 ± 0.023
4.286ThrPro: 4.286 ± 0.053
1.287ThrGln: 1.287 ± 0.027
4.25ThrArg: 4.25 ± 0.048
3.036ThrSer: 3.036 ± 0.05
3.849ThrThr: 3.849 ± 0.058
6.339ThrVal: 6.339 ± 0.063
0.868ThrTrp: 0.868 ± 0.023
1.352ThrTyr: 1.352 ± 0.026
0.0ThrXaa: 0.0 ± 0.0
Val
10.519ValAla: 10.519 ± 0.075
0.827ValCys: 0.827 ± 0.022
4.86ValAsp: 4.86 ± 0.053
4.542ValGlu: 4.542 ± 0.062
2.413ValPhe: 2.413 ± 0.035
6.325ValGly: 6.325 ± 0.068
2.062ValHis: 2.062 ± 0.031
2.788ValIle: 2.788 ± 0.042
1.64ValLys: 1.64 ± 0.032
9.612ValLeu: 9.612 ± 0.075
1.377ValMet: 1.377 ± 0.028
1.641ValAsn: 1.641 ± 0.029
5.636ValPro: 5.636 ± 0.059
2.089ValGln: 2.089 ± 0.034
7.828ValArg: 7.828 ± 0.076
4.237ValSer: 4.237 ± 0.045
6.002ValThr: 6.002 ± 0.062
7.818ValVal: 7.818 ± 0.085
1.177ValTrp: 1.177 ± 0.024
1.597ValTyr: 1.597 ± 0.03
0.0ValXaa: 0.0 ± 0.0
Trp
1.676TrpAla: 1.676 ± 0.032
0.151TrpCys: 0.151 ± 0.008
0.823TrpAsp: 0.823 ± 0.02
0.7TrpGlu: 0.7 ± 0.018
0.498TrpPhe: 0.498 ± 0.016
1.055TrpGly: 1.055 ± 0.023
0.387TrpHis: 0.387 ± 0.014
0.521TrpIle: 0.521 ± 0.017
0.35TrpLys: 0.35 ± 0.014
1.775TrpLeu: 1.775 ± 0.028
0.259TrpMet: 0.259 ± 0.011
0.4TrpAsn: 0.4 ± 0.015
0.8TrpPro: 0.8 ± 0.021
0.634TrpGln: 0.634 ± 0.019
1.356TrpArg: 1.356 ± 0.026
0.934TrpSer: 0.934 ± 0.025
1.033TrpThr: 1.033 ± 0.023
0.965TrpVal: 0.965 ± 0.024
0.339TrpTrp: 0.339 ± 0.014
0.367TrpTyr: 0.367 ± 0.012
0.0TrpXaa: 0.0 ± 0.0
Tyr
2.84TyrAla: 2.84 ± 0.038
0.176TyrCys: 0.176 ± 0.01
1.542TyrAsp: 1.542 ± 0.033
1.237TyrGlu: 1.237 ± 0.024
0.634TyrPhe: 0.634 ± 0.02
2.308TyrGly: 2.308 ± 0.039
0.406TyrHis: 0.406 ± 0.014
0.462TyrIle: 0.462 ± 0.016
0.366TyrLys: 0.366 ± 0.014
2.079TyrLeu: 2.079 ± 0.034
0.254TyrMet: 0.254 ± 0.011
0.393TyrAsn: 0.393 ± 0.015
1.071TyrPro: 1.071 ± 0.026
0.581TyrGln: 0.581 ± 0.018
1.891TyrArg: 1.891 ± 0.034
0.899TyrSer: 0.899 ± 0.024
1.216TyrThr: 1.216 ± 0.025
1.691TyrVal: 1.691 ± 0.029
0.361TyrTrp: 0.361 ± 0.014
0.438TyrTyr: 0.438 ± 0.015
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 6390 proteins (2106575 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