Amino acid dipepetide frequency for Sulfolobales virus YNP1

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
3.171AlaAla: 3.171 ± 0.747
0.167AlaCys: 0.167 ± 0.104
2.336AlaAsp: 2.336 ± 0.574
3.254AlaGlu: 3.254 ± 0.425
2.253AlaPhe: 2.253 ± 0.545
3.338AlaGly: 3.338 ± 0.844
0.25AlaHis: 0.25 ± 0.128
4.256AlaIle: 4.256 ± 0.644
4.256AlaLys: 4.256 ± 0.696
6.175AlaLeu: 6.175 ± 0.619
1.168AlaMet: 1.168 ± 0.317
2.253AlaAsn: 2.253 ± 0.479
2.003AlaPro: 2.003 ± 0.346
1.836AlaGln: 1.836 ± 0.853
1.669AlaArg: 1.669 ± 0.376
2.503AlaSer: 2.503 ± 0.456
1.752AlaThr: 1.752 ± 0.333
5.674AlaVal: 5.674 ± 0.707
0.334AlaTrp: 0.334 ± 0.151
2.67AlaTyr: 2.67 ± 0.453
0.083AlaXaa: 0.083 ± 0.081
Cys
0.334CysAla: 0.334 ± 0.156
0.0CysCys: 0.0 ± 0.0
0.167CysAsp: 0.167 ± 0.121
0.334CysGlu: 0.334 ± 0.231
0.25CysPhe: 0.25 ± 0.142
0.584CysGly: 0.584 ± 0.289
0.0CysHis: 0.0 ± 0.0
0.334CysIle: 0.334 ± 0.173
0.417CysLys: 0.417 ± 0.237
0.501CysLeu: 0.501 ± 0.212
0.167CysMet: 0.167 ± 0.11
0.584CysAsn: 0.584 ± 0.196
0.501CysPro: 0.501 ± 0.288
0.334CysGln: 0.334 ± 0.25
0.334CysArg: 0.334 ± 0.154
0.25CysSer: 0.25 ± 0.147
0.25CysThr: 0.25 ± 0.128
0.25CysVal: 0.25 ± 0.133
0.0CysTrp: 0.0 ± 0.0
0.25CysTyr: 0.25 ± 0.133
0.25CysXaa: 0.25 ± 0.134
Asp
1.585AspAla: 1.585 ± 0.35
0.083AspCys: 0.083 ± 0.084
3.004AspAsp: 3.004 ± 0.508
4.673AspGlu: 4.673 ± 0.654
2.837AspPhe: 2.837 ± 0.53
1.836AspGly: 1.836 ± 0.555
0.334AspHis: 0.334 ± 0.176
3.838AspIle: 3.838 ± 0.479
3.421AspLys: 3.421 ± 0.552
4.756AspLeu: 4.756 ± 0.728
0.918AspMet: 0.918 ± 0.231
2.921AspAsn: 2.921 ± 0.467
2.003AspPro: 2.003 ± 0.417
0.918AspGln: 0.918 ± 0.314
1.419AspArg: 1.419 ± 0.417
1.419AspSer: 1.419 ± 0.405
2.336AspThr: 2.336 ± 0.378
3.505AspVal: 3.505 ± 0.587
0.334AspTrp: 0.334 ± 0.166
3.004AspTyr: 3.004 ± 0.572
0.417AspXaa: 0.417 ± 0.176
Glu
3.171GluAla: 3.171 ± 0.619
1.252GluCys: 1.252 ± 0.394
3.171GluAsp: 3.171 ± 0.576
7.009GluGlu: 7.009 ± 0.93
1.919GluPhe: 1.919 ± 0.39
3.254GluGly: 3.254 ± 0.677
0.584GluHis: 0.584 ± 0.176
7.593GluIle: 7.593 ± 1.026
8.511GluLys: 8.511 ± 0.963
7.093GluLeu: 7.093 ± 1.021
1.419GluMet: 1.419 ± 0.314
4.172GluAsn: 4.172 ± 0.636
1.669GluPro: 1.669 ± 0.298
2.754GluGln: 2.754 ± 0.863
2.921GluArg: 2.921 ± 0.604
4.089GluSer: 4.089 ± 0.563
2.754GluThr: 2.754 ± 0.436
5.925GluVal: 5.925 ± 0.763
0.751GluTrp: 0.751 ± 0.223
2.336GluTyr: 2.336 ± 0.376
0.334GluXaa: 0.334 ± 0.238
Phe
2.67PheAla: 2.67 ± 0.535
0.083PheCys: 0.083 ± 0.078
2.17PheAsp: 2.17 ± 0.499
2.253PheGlu: 2.253 ± 0.507
2.503PhePhe: 2.503 ± 0.492
2.086PheGly: 2.086 ± 0.328
0.501PheHis: 0.501 ± 0.194
4.089PheIle: 4.089 ± 0.625
2.42PheLys: 2.42 ± 0.449
3.588PheLeu: 3.588 ± 0.611
0.751PheMet: 0.751 ± 0.253
2.086PheAsn: 2.086 ± 0.391
1.836PhePro: 1.836 ± 0.412
0.751PheGln: 0.751 ± 0.209
2.17PheArg: 2.17 ± 0.468
3.421PheSer: 3.421 ± 0.553
3.254PheThr: 3.254 ± 0.562
2.754PheVal: 2.754 ± 0.529
0.167PheTrp: 0.167 ± 0.116
2.336PheTyr: 2.336 ± 0.508
0.25PheXaa: 0.25 ± 0.141
Gly
2.67GlyAla: 2.67 ± 0.589
0.167GlyCys: 0.167 ± 0.116
2.17GlyAsp: 2.17 ± 0.386
5.007GlyGlu: 5.007 ± 0.579
1.252GlyPhe: 1.252 ± 0.383
3.672GlyGly: 3.672 ± 0.897
0.334GlyHis: 0.334 ± 0.18
4.339GlyIle: 4.339 ± 0.568
4.005GlyLys: 4.005 ± 0.471
4.005GlyLeu: 4.005 ± 0.534
0.834GlyMet: 0.834 ± 0.274
3.254GlyAsn: 3.254 ± 0.589
1.085GlyPro: 1.085 ± 0.229
1.919GlyGln: 1.919 ± 0.527
1.419GlyArg: 1.419 ± 0.341
3.338GlySer: 3.338 ± 0.624
2.837GlyThr: 2.837 ± 0.417
5.007GlyVal: 5.007 ± 0.551
1.168GlyTrp: 1.168 ± 0.271
2.754GlyTyr: 2.754 ± 0.563
0.25GlyXaa: 0.25 ± 0.181
His
0.668HisAla: 0.668 ± 0.205
0.25HisCys: 0.25 ± 0.132
0.584HisAsp: 0.584 ± 0.196
1.001HisGlu: 1.001 ± 0.299
0.501HisPhe: 0.501 ± 0.179
0.834HisGly: 0.834 ± 0.255
0.083HisHis: 0.083 ± 0.086
0.668HisIle: 0.668 ± 0.237
0.584HisLys: 0.584 ± 0.273
1.085HisLeu: 1.085 ± 0.357
0.501HisMet: 0.501 ± 0.191
0.668HisAsn: 0.668 ± 0.199
0.501HisPro: 0.501 ± 0.154
0.25HisGln: 0.25 ± 0.164
0.167HisArg: 0.167 ± 0.122
0.751HisSer: 0.751 ± 0.239
0.334HisThr: 0.334 ± 0.173
0.834HisVal: 0.834 ± 0.255
0.083HisTrp: 0.083 ± 0.084
0.501HisTyr: 0.501 ± 0.211
0.083HisXaa: 0.083 ± 0.081
Ile
5.007IleAla: 5.007 ± 0.529
0.918IleCys: 0.918 ± 0.294
4.506IleAsp: 4.506 ± 0.714
6.342IleGlu: 6.342 ± 0.848
3.505IlePhe: 3.505 ± 0.561
3.588IleGly: 3.588 ± 0.71
1.001IleHis: 1.001 ± 0.241
6.509IleIle: 6.509 ± 0.624
5.758IleLys: 5.758 ± 0.726
7.427IleLeu: 7.427 ± 1.069
1.335IleMet: 1.335 ± 0.297
3.672IleAsn: 3.672 ± 0.633
3.755IlePro: 3.755 ± 0.519
3.588IleGln: 3.588 ± 0.601
3.505IleArg: 3.505 ± 0.466
5.591IleSer: 5.591 ± 0.681
4.423IleThr: 4.423 ± 0.738
5.925IleVal: 5.925 ± 0.716
1.085IleTrp: 1.085 ± 0.282
3.588IleTyr: 3.588 ± 0.449
0.834IleXaa: 0.834 ± 0.238
Lys
3.087LysAla: 3.087 ± 0.444
0.668LysCys: 0.668 ± 0.328
5.007LysAsp: 5.007 ± 0.735
6.926LysGlu: 6.926 ± 1.003
3.672LysPhe: 3.672 ± 0.646
3.338LysGly: 3.338 ± 0.5
1.335LysHis: 1.335 ± 0.328
6.008LysIle: 6.008 ± 0.899
7.093LysLys: 7.093 ± 0.85
7.343LysLeu: 7.343 ± 0.846
1.752LysMet: 1.752 ± 0.361
3.838LysAsn: 3.838 ± 0.665
2.67LysPro: 2.67 ± 0.4
3.087LysGln: 3.087 ± 0.666
3.421LysArg: 3.421 ± 0.627
3.171LysSer: 3.171 ± 0.598
2.837LysThr: 2.837 ± 0.467
5.507LysVal: 5.507 ± 0.798
1.001LysTrp: 1.001 ± 0.308
3.838LysTyr: 3.838 ± 0.581
0.334LysXaa: 0.334 ± 0.175
Leu
6.008LeuAla: 6.008 ± 0.67
0.25LeuCys: 0.25 ± 0.145
3.588LeuAsp: 3.588 ± 0.595
6.759LeuGlu: 6.759 ± 0.714
3.838LeuPhe: 3.838 ± 0.593
5.007LeuGly: 5.007 ± 0.638
1.502LeuHis: 1.502 ± 0.357
6.842LeuIle: 6.842 ± 0.988
7.51LeuLys: 7.51 ± 0.934
10.18LeuLeu: 10.18 ± 0.943
3.087LeuMet: 3.087 ± 0.464
4.339LeuAsn: 4.339 ± 0.569
3.922LeuPro: 3.922 ± 0.555
4.923LeuGln: 4.923 ± 1.464
4.673LeuArg: 4.673 ± 0.733
7.26LeuSer: 7.26 ± 0.662
5.007LeuThr: 5.007 ± 0.681
6.091LeuVal: 6.091 ± 0.838
0.501LeuTrp: 0.501 ± 0.18
5.174LeuTyr: 5.174 ± 0.944
0.584LeuXaa: 0.584 ± 0.3
Met
1.502MetAla: 1.502 ± 0.438
0.167MetCys: 0.167 ± 0.121
0.751MetAsp: 0.751 ± 0.235
1.085MetGlu: 1.085 ± 0.341
1.001MetPhe: 1.001 ± 0.283
0.751MetGly: 0.751 ± 0.27
0.167MetHis: 0.167 ± 0.117
2.253MetIle: 2.253 ± 0.489
1.419MetLys: 1.419 ± 0.415
2.754MetLeu: 2.754 ± 0.445
0.417MetMet: 0.417 ± 0.178
0.918MetAsn: 0.918 ± 0.256
1.252MetPro: 1.252 ± 0.261
0.918MetGln: 0.918 ± 0.353
1.752MetArg: 1.752 ± 0.276
1.001MetSer: 1.001 ± 0.323
1.252MetThr: 1.252 ± 0.35
1.085MetVal: 1.085 ± 0.332
0.25MetTrp: 0.25 ± 0.151
0.417MetTyr: 0.417 ± 0.194
0.167MetXaa: 0.167 ± 0.104
Asn
4.005AsnAla: 4.005 ± 0.613
0.417AsnCys: 0.417 ± 0.163
2.921AsnAsp: 2.921 ± 0.497
4.673AsnGlu: 4.673 ± 0.717
1.419AsnPhe: 1.419 ± 0.321
4.673AsnGly: 4.673 ± 0.861
0.25AsnHis: 0.25 ± 0.139
4.172AsnIle: 4.172 ± 0.638
2.336AsnLys: 2.336 ± 0.508
4.256AsnLeu: 4.256 ± 0.627
0.501AsnMet: 0.501 ± 0.185
2.921AsnAsn: 2.921 ± 0.804
3.421AsnPro: 3.421 ± 0.725
1.585AsnGln: 1.585 ± 0.515
1.752AsnArg: 1.752 ± 0.314
3.838AsnSer: 3.838 ± 0.623
3.421AsnThr: 3.421 ± 0.738
4.339AsnVal: 4.339 ± 0.661
0.501AsnTrp: 0.501 ± 0.183
2.086AsnTyr: 2.086 ± 0.56
0.25AsnXaa: 0.25 ± 0.149
Pro
2.17ProAla: 2.17 ± 0.422
0.0ProCys: 0.0 ± 0.0
2.086ProAsp: 2.086 ± 0.356
2.336ProGlu: 2.336 ± 0.374
2.754ProPhe: 2.754 ± 0.551
1.836ProGly: 1.836 ± 0.408
0.834ProHis: 0.834 ± 0.261
3.672ProIle: 3.672 ± 0.584
2.67ProLys: 2.67 ± 0.403
3.838ProLeu: 3.838 ± 0.557
0.584ProMet: 0.584 ± 0.215
2.503ProAsn: 2.503 ± 0.721
4.84ProPro: 4.84 ± 1.306
1.919ProGln: 1.919 ± 0.537
1.001ProArg: 1.001 ± 0.395
4.84ProSer: 4.84 ± 1.386
2.253ProThr: 2.253 ± 0.397
3.004ProVal: 3.004 ± 0.616
0.751ProTrp: 0.751 ± 0.26
2.336ProTyr: 2.336 ± 0.518
0.083ProXaa: 0.083 ± 0.085
Gln
2.17GlnAla: 2.17 ± 1.122
0.083GlnCys: 0.083 ± 0.087
1.001GlnAsp: 1.001 ± 0.246
2.754GlnGlu: 2.754 ± 1.124
1.585GlnPhe: 1.585 ± 0.343
2.17GlnGly: 2.17 ± 0.574
0.501GlnHis: 0.501 ± 0.257
3.505GlnIle: 3.505 ± 0.882
1.919GlnLys: 1.919 ± 0.378
3.922GlnLeu: 3.922 ± 1.67
0.584GlnMet: 0.584 ± 0.212
2.837GlnAsn: 2.837 ± 0.516
1.836GlnPro: 1.836 ± 0.412
5.925GlnGln: 5.925 ± 3.791
1.585GlnArg: 1.585 ± 0.403
2.503GlnSer: 2.503 ± 0.915
2.754GlnThr: 2.754 ± 0.824
2.003GlnVal: 2.003 ± 0.692
0.0GlnTrp: 0.0 ± 0.0
1.085GlnTyr: 1.085 ± 0.296
0.25GlnXaa: 0.25 ± 0.145
Arg
1.669ArgAla: 1.669 ± 0.384
0.167ArgCys: 0.167 ± 0.114
1.919ArgAsp: 1.919 ± 0.512
4.172ArgGlu: 4.172 ± 0.659
1.752ArgPhe: 1.752 ± 0.312
1.919ArgGly: 1.919 ± 0.383
0.501ArgHis: 0.501 ± 0.229
2.754ArgIle: 2.754 ± 0.573
3.672ArgLys: 3.672 ± 0.575
3.838ArgLeu: 3.838 ± 0.575
1.252ArgMet: 1.252 ± 0.362
2.336ArgAsn: 2.336 ± 0.481
1.502ArgPro: 1.502 ± 0.451
0.834ArgGln: 0.834 ± 0.271
3.338ArgArg: 3.338 ± 0.632
1.669ArgSer: 1.669 ± 0.381
1.669ArgThr: 1.669 ± 0.443
2.837ArgVal: 2.837 ± 0.658
0.501ArgTrp: 0.501 ± 0.218
2.67ArgTyr: 2.67 ± 0.427
0.167ArgXaa: 0.167 ± 0.102
Ser
3.338SerAla: 3.338 ± 0.602
0.167SerCys: 0.167 ± 0.112
2.336SerAsp: 2.336 ± 0.439
3.338SerGlu: 3.338 ± 0.422
2.003SerPhe: 2.003 ± 0.468
3.254SerGly: 3.254 ± 0.524
0.334SerHis: 0.334 ± 0.142
5.174SerIle: 5.174 ± 1.405
4.089SerLys: 4.089 ± 0.533
4.923SerLeu: 4.923 ± 0.589
2.003SerMet: 2.003 ± 0.463
4.089SerAsn: 4.089 ± 0.768
5.174SerPro: 5.174 ± 1.464
3.087SerGln: 3.087 ± 1.205
2.086SerArg: 2.086 ± 0.409
6.258SerSer: 6.258 ± 1.197
3.922SerThr: 3.922 ± 0.804
4.589SerVal: 4.589 ± 0.755
0.584SerTrp: 0.584 ± 0.326
3.421SerTyr: 3.421 ± 0.533
0.918SerXaa: 0.918 ± 0.36
Thr
2.336ThrAla: 2.336 ± 0.332
0.25ThrCys: 0.25 ± 0.141
1.919ThrAsp: 1.919 ± 0.37
3.004ThrGlu: 3.004 ± 0.499
2.67ThrPhe: 2.67 ± 0.555
2.503ThrGly: 2.503 ± 0.39
0.751ThrHis: 0.751 ± 0.295
3.588ThrIle: 3.588 ± 0.565
4.589ThrLys: 4.589 ± 0.606
5.674ThrLeu: 5.674 ± 0.598
1.335ThrMet: 1.335 ± 0.353
2.67ThrAsn: 2.67 ± 0.464
3.004ThrPro: 3.004 ± 0.408
2.253ThrGln: 2.253 ± 0.419
1.335ThrArg: 1.335 ± 0.377
4.089ThrSer: 4.089 ± 0.614
3.755ThrThr: 3.755 ± 0.517
4.423ThrVal: 4.423 ± 0.677
0.668ThrTrp: 0.668 ± 0.264
1.919ThrTyr: 1.919 ± 0.341
0.167ThrXaa: 0.167 ± 0.115
Val
2.921ValAla: 2.921 ± 0.446
0.417ValCys: 0.417 ± 0.186
2.754ValAsp: 2.754 ± 0.417
4.589ValGlu: 4.589 ± 0.583
3.505ValPhe: 3.505 ± 0.581
4.339ValGly: 4.339 ± 0.807
0.834ValHis: 0.834 ± 0.223
6.676ValIle: 6.676 ± 0.831
6.342ValLys: 6.342 ± 0.869
8.094ValLeu: 8.094 ± 0.804
1.669ValMet: 1.669 ± 0.393
4.256ValAsn: 4.256 ± 0.584
2.754ValPro: 2.754 ± 0.388
1.836ValGln: 1.836 ± 0.661
3.254ValArg: 3.254 ± 0.603
5.674ValSer: 5.674 ± 0.647
4.423ValThr: 4.423 ± 0.649
6.676ValVal: 6.676 ± 0.884
0.751ValTrp: 0.751 ± 0.233
3.838ValTyr: 3.838 ± 0.525
0.668ValXaa: 0.668 ± 0.242
Trp
0.083TrpAla: 0.083 ± 0.077
0.083TrpCys: 0.083 ± 0.074
0.501TrpAsp: 0.501 ± 0.273
1.085TrpGlu: 1.085 ± 0.314
0.417TrpPhe: 0.417 ± 0.187
0.334TrpGly: 0.334 ± 0.173
0.25TrpHis: 0.25 ± 0.159
0.417TrpIle: 0.417 ± 0.183
1.419TrpLys: 1.419 ± 0.358
1.252TrpLeu: 1.252 ± 0.341
0.25TrpMet: 0.25 ± 0.13
0.417TrpAsn: 0.417 ± 0.21
0.0TrpPro: 0.0 ± 0.0
0.25TrpGln: 0.25 ± 0.116
1.001TrpArg: 1.001 ± 0.24
0.501TrpSer: 0.501 ± 0.201
0.584TrpThr: 0.584 ± 0.221
0.25TrpVal: 0.25 ± 0.16
0.0TrpTrp: 0.0 ± 0.0
0.834TrpTyr: 0.834 ± 0.239
0.083TrpXaa: 0.083 ± 0.077
Tyr
2.67TyrAla: 2.67 ± 0.501
0.417TyrCys: 0.417 ± 0.196
2.17TyrAsp: 2.17 ± 0.48
1.752TyrGlu: 1.752 ± 0.403
2.42TyrPhe: 2.42 ± 0.468
2.003TyrGly: 2.003 ± 0.493
0.501TyrHis: 0.501 ± 0.176
4.339TyrIle: 4.339 ± 0.555
2.921TyrLys: 2.921 ± 0.599
5.424TyrLeu: 5.424 ± 0.781
0.668TyrMet: 0.668 ± 0.226
2.336TyrAsn: 2.336 ± 0.508
2.253TyrPro: 2.253 ± 0.496
1.836TyrGln: 1.836 ± 0.406
2.17TyrArg: 2.17 ± 0.387
2.754TyrSer: 2.754 ± 0.46
2.837TyrThr: 2.837 ± 0.536
4.923TyrVal: 4.923 ± 0.648
0.501TyrTrp: 0.501 ± 0.223
4.172TyrTyr: 4.172 ± 0.662
0.417TyrXaa: 0.417 ± 0.166
Xaa
0.167XaaAla: 0.167 ± 0.106
0.083XaaCys: 0.083 ± 0.081
0.501XaaAsp: 0.501 ± 0.174
0.334XaaGlu: 0.334 ± 0.178
0.083XaaPhe: 0.083 ± 0.096
0.167XaaGly: 0.167 ± 0.115
0.083XaaHis: 0.083 ± 0.071
0.834XaaIle: 0.834 ± 0.276
0.584XaaLys: 0.584 ± 0.231
0.918XaaLeu: 0.918 ± 0.513
0.0XaaMet: 0.0 ± 0.0
0.668XaaAsn: 0.668 ± 0.226
0.334XaaPro: 0.334 ± 0.192
0.167XaaGln: 0.167 ± 0.119
0.25XaaArg: 0.25 ± 0.139
0.167XaaSer: 0.167 ± 0.121
0.25XaaThr: 0.25 ± 0.134
0.668XaaVal: 0.668 ± 0.296
0.083XaaTrp: 0.083 ± 0.077
0.25XaaTyr: 0.25 ± 0.151
1.085XaaXaa: 1.085 ± 0.817
Statistics based on 71 proteins (11985 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