Bacteroides fragilis (strain ATCC 25285 / DSM 2151 / JCM 11019 / NCTC 9343) 
Average proteome isoelectric point is 6.52 
Get precalculated fractions of proteins 
 
  
    Acidic  
 
  
    pI < 6.8  
 
  
    6.8-7.4  
 
  
    pI > 7.4  
 
  
    Basic  
    
 
  
    All  
 
Note: above files contain also dissociation constants (pKa) 
Virtual 2D-PAGE plot for 4234 proteins (isoelectric point calculated using IPC2_protein) 
 
Get csv file with sequences according to given criteria: 
* You can choose from 21 different methods for calculating isoelectric point 
 Summary statistics related to proteome-wise predictions 
Protein with the lowest isoelectric point: 
>tr|Q5LG53|Q5LG53_BACFN Putative N utilization substance protein OS=Bacteroides fragilis (strain ATCC 25285 / DSM 2151 / JCM 11019 / NCTC 9343) OX=272559 GN=BF9343_1107 PE=3 SV=1MM1 pKa = 7.28  EE2 pKa = 5.61  AVTLSEE8 pKa = 3.54  ARR10 pKa = 11.84  VYY12 pKa = 10.88  VGTYY16 pKa = 9.56  NKK18 pKa = 10.08  YY19 pKa = 10.6  NNGSLFGKK27 pKa = 9.26  WLDD30 pKa = 3.72  LSDD33 pKa = 5.06  YY34 pKa = 10.62  SDD36 pKa = 3.6  KK37 pKa = 11.68  DD38 pKa = 3.47  EE39 pKa = 4.84  FMEE42 pKa = 5.13  ACRR45 pKa = 11.84  EE46 pKa = 4.05  LHH48 pKa = 7.22  KK49 pKa = 10.91  DD50 pKa = 3.54  DD51 pKa = 4.58  QDD53 pKa = 3.96  PEE55 pKa = 5.08  FMFQDD60 pKa = 3.9  YY61 pKa = 11.28  EE62 pKa = 4.42  NIPEE66 pKa = 4.13  ALISEE71 pKa = 4.48  SWLSEE76 pKa = 3.76  KK77 pKa = 10.49  FFEE80 pKa = 5.55  LRR82 pKa = 11.84  DD83 pKa = 4.29  AIEE86 pKa = 4.77  KK87 pKa = 10.64  LSEE90 pKa = 4.12  TQQEE94 pKa = 4.99  AFFVWCDD101 pKa = 3.32  HH102 pKa = 6.55  HH103 pKa = 8.25  NSDD106 pKa = 5.34  ISEE109 pKa = 4.05  EE110 pKa = 4.1  DD111 pKa = 3.42  ADD113 pKa = 4.39  DD114 pKa = 5.21  LISSFEE120 pKa = 4.1  DD121 pKa = 4.17  EE122 pKa = 4.47  YY123 pKa = 11.31  QGEE126 pKa = 4.44  YY127 pKa = 10.22  KK128 pKa = 10.73  DD129 pKa = 4.14  EE130 pKa = 3.79  EE131 pKa = 5.05  DD132 pKa = 3.37  YY133 pKa = 11.08  AYY135 pKa = 10.08  EE136 pKa = 4.47  IVEE139 pKa = 3.94  QCYY142 pKa = 10.53  DD143 pKa = 3.45  LPEE146 pKa = 4.03  FAKK149 pKa = 10.18  TYY151 pKa = 10.45  FDD153 pKa = 3.79  YY154 pKa = 11.39  SAFARR159 pKa = 11.84  DD160 pKa = 5.17  LFITDD165 pKa = 2.97  YY166 pKa = 11.18  WMDD169 pKa = 3.15  NGFVFRR175 pKa = 11.84  CAA177 pKa = 3.58  
 21.14 kDa
Isoelectric point according different methods: 
IPC2.protein.svr19  3.757 
IPC2_protein 3.872 
IPC_protein 3.859 
Toseland    3.656 
ProMoST     3.999 
Dawson      3.834 
Bjellqvist  3.986 
Wikipedia   3.732 
Rodwell     3.681 
Grimsley    3.567 
Solomon     3.821 
Lehninger   3.783 
Nozaki      3.935 
DTASelect   4.126 
Thurlkill   3.694 
EMBOSS      3.745 
Sillero     3.973 
Patrickios  0.757 
IPC_peptide 3.821 
IPC2_peptide  3.948 
IPC2.peptide.svr19  3.857 
 Protein with the highest isoelectric point: 
>tr|Q5LF76|Q5LF76_BACFN Uncharacterized protein OS=Bacteroides fragilis (strain ATCC 25285 / DSM 2151 / JCM 11019 / NCTC 9343) OX=272559 GN=BF9343_1441 PE=4 SV=1MM1 pKa = 7.91  PSGKK5 pKa = 9.66  KK6 pKa = 9.7  KK7 pKa = 9.82  KK8 pKa = 7.49  RR9 pKa = 11.84  HH10 pKa = 5.6  KK11 pKa = 10.32  MSTHH15 pKa = 5.04  KK16 pKa = 10.3  RR17 pKa = 11.84  KK18 pKa = 9.87  KK19 pKa = 8.77  RR20 pKa = 11.84  LRR22 pKa = 11.84  KK23 pKa = 9.28  NRR25 pKa = 11.84  HH26 pKa = 4.94  KK27 pKa = 10.86  SKK29 pKa = 10.75  KK30 pKa = 9.6  
 3.75 kDa
Isoelectric point according different methods: 
IPC2.protein.svr19  9.41 
IPC2_protein 10.965 
IPC_protein 12.442 
Toseland    12.647 
ProMoST     13.1 
Dawson      12.647 
Bjellqvist  12.618 
Wikipedia   13.1 
Rodwell     12.705 
Grimsley    12.691 
Solomon     13.115 
Lehninger   13.027 
Nozaki      12.647 
DTASelect   12.618 
Thurlkill   12.647 
EMBOSS      13.13 
Sillero     12.647 
Patrickios  12.427 
IPC_peptide 13.115 
IPC2_peptide  12.091 
IPC2.peptide.svr19  8.937 
 Peptides (in silico  digests for buttom-up proteomics) 
Below you can find 
in silico  digests of the whole proteome with Trypsin, Chymotrypsin, Trypsin+LysC, LysN, ArgC proteases suitable for different mass spec machines.
 
  
    Try  
 
  
    ChTry  
 
  
    ArgC  
 
  
    LysN  
 
  
    TryLysC  
 
  
    Try  
 
  
    ChTry  
 
  
    ArgC  
 
  
    LysN  
 
  
    TryLysC  
 
  
    Try  
 
  
    ChTry  
 
  
    ArgC  
 
  
    LysN  
 
  
    TryLysC  
 
  
    Try  
 
  
    ChTry  
 
  
    ArgC  
 
  
    LysN  
 
  
    TryLysC  
 
  
    Try  
 
  
    ChTry  
 
  
    ArgC  
 
  
    LysN  
 
  
    TryLysC  
   
  
General Statistics 
    
      
        Number of major isoforms
Number of additional isoforms
Number of all proteins
Number of amino acids
Min. Seq. Length
Max. Seq. Length
Avg. Seq. Length
Avg. Mol. Weight
 
     
    
      
        4234 
0
4234 
1537139
30
1957
363.0
41.0
          
     
  
 
    Amino acid frequency 
  
  
    
      
        Ala
Cys
Asp
Glu
Phe
Gly
His
Ile
Lys
Leu
 
     
    
                 
        6.887 ± 0.034
1.231 ± 0.015
5.408 ± 0.025
6.51 ± 0.037
4.632 ± 0.027
6.864 ± 0.034
1.83 ± 0.015
6.999 ± 0.037
6.622 ± 0.032
9.279 ± 0.036
          
     
  
  
  
      
          
        Met
Asn
Gln
Pro
Arg
Ser
Thr
Val
Trp
Tyr
 
     
    
                 
        2.72 ± 0.017
5.047 ± 0.03
3.793 ± 0.018
3.446 ± 0.02
4.719 ± 0.029
6.172 ± 0.032
5.61 ± 0.023
6.479 ± 0.029
1.264 ± 0.014
4.49 ± 0.027
          
     
  
  
  
Note:  For amino acid frequency statistics the error has been estimated with the bootstraping (x100) at the protein levelMost of the basic statistics you can see at this page can be downloaded from this CSV file  
For dipeptide frequency statistics click here