Severe acute respiratory syndrome coronavirus 2 (2019-nCoV) (SARS-CoV-2)

Taxonomy: Viruses; Riboviria; Orthornavirae; Pisuviricota; Pisoniviricetes; Nidovirales; Cornidovirineae; Coronaviridae; Orthocoronavirinae; Betacoronavirus; Sarbecovirus; Severe acute respiratory syndrome-related coronavirus

Average proteome isoelectric point is 6.69

Get precalculated fractions of proteins

Acidic
pI < 6.8
6.8-7.4
pI > 7.4
Basic
    
All



Virtual 2D-PAGE plot for 17 proteins (isoelectric point calculated using IPC2_protein)

Get csv file with sequences according to given criteria:
        -     Method 

     -  kDa    
                                                                                      

* You can choose from 21 different methods for calculating isoelectric point

Summary statistics related to proteome-wise predictions


    
Protein with the lowest isoelectric point:
>sp|P0DTF1|ORF3B_SARS2 ORF3b protein OS=Severe acute respiratory syndrome coronavirus 2 OX=2697049 PE=4 SV=1
MM1 pKa = 7.74IEE3 pKa = 4.11LSLIDD8 pKa = 5.32FYY10 pKa = 11.8LCFLAFLLFLVLIMLIIFWFSLEE33 pKa = 4.11LQDD36 pKa = 5.82HH37 pKa = 6.7NEE39 pKa = 4.02TCHH42 pKa = 6.32AA43 pKa = 4.65

Molecular weight: 5.18 kDa
Isoelectric point according different methods:





Protein with the highest isoelectric point:
>sp|P0DTG1|ORF3C_SARS2 ORF3c protein OS=Severe acute respiratory syndrome coronavirus 2 OX=2697049 PE=4 SV=1
MM1 pKa = 7.75LLLQILFALLQRR13 pKa = 11.84YY14 pKa = 8.85RR15 pKa = 11.84YY16 pKa = 9.05KK17 pKa = 10.6PHH19 pKa = 6.59SLSDD23 pKa = 3.61GLLLALHH30 pKa = 6.61FLLFFRR36 pKa = 11.84ALPKK40 pKa = 10.51SS41 pKa = 3.56

Molecular weight: 4.86 kDa
Isoelectric point according different methods:





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
ESI
ChTry
ESI
ArgC
ESI
LysN
ESI
TryLysC
ESI

Try
MALDI
ChTry
MALDI
ArgC
MALDI
LysN
MALDI
TryLysC
MALDI

Try
LTQ
ChTry
LTQ
ArgC
LTQ
LysN
LTQ
TryLysC
LTQ

Try
MSlow
ChTry
MSlow
ArgC
MSlow
LysN
MSlow
TryLysC
MSlow

Try
MShigh
ChTry
MShigh
ArgC
MShigh
LysN
MShigh
TryLysC
MShigh

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

17

0

17

14439

22

7096

849.4

94.86

Amino acid frequency

Ala

Cys

Asp

Glu

Phe

Gly

His

Ile

Lys

Leu

6.863 ± 0.261

3.103 ± 0.253

5.049 ± 0.359

4.806 ± 0.357

4.986 ± 0.288

5.873 ± 0.32

1.877 ± 0.151

5.125 ± 0.401

5.894 ± 0.416

9.793 ± 0.657

Met

Asn

Gln

Pro

Arg

Ser

Thr

Val

Trp

Tyr

2.251 ± 0.227

5.36 ± 0.288

3.975 ± 0.3

3.698 ± 0.53

3.407 ± 0.375

6.711 ± 0.323

7.487 ± 0.259

8.138 ± 0.577

1.108 ± 0.114

4.495 ± 0.264
Note: For amino acid frequency statistics the error has been estimated with the bootstraping (x100) at the protein level

Most of the basic statistics you can see at this page can be downloaded from this CSV file

For dipeptide frequency statistics click here
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