| Product name: | Recombinant 2019-nCoV Guanine-N7_meth (N-6His) | 
                                                                            
                                           | Description: | Recombinant 2019-nCoV Guanine-N7 methyltransferase is produced by our E.coli expression system and the target gene encoding Ala1-Gln527 is expressed with a 6His tag at the N-terminus. | 
                                                                                
                                           | Accession: | YP_009725309.1 | 
                                                                                
                                           | Molecular weight: | 62.9 KDa | 
                                                                                
                                           | Apparent molecular weight: | 60 KDa, reducing conditions | 
                                                                                
                                           | Purity: | Greater than 85% as determined by reducing SDS-PAGE. | 
                                                                                
                                           | Storage: | Store at ≤-70°C, stable for 6 months after receipt.
Store at ≤-70°C, stable for 3 months under sterile conditions after opening. 
Please minimize freeze-thaw cycles. | 
                                                                                
                                           | Delivery condition: | The product is shipped on dry ice/polar packs.
Upon receipt, store it immediately at the temperature listed below. | 
                                                                                
                                           | Background: | The nonstructural protein (nsp) 14 of SARS-CoV 2 was identified as a cap (guanine-N7)-methyltransferase (N7-MTase). Nsp14 of coronaviruses two different activities: an exoribonuclease activity acting on both ssRNA and dsRNA in a 3' to 5' direction and a N7-guanine methyltransferase activity. It may be involved in the proof-reading ability during the viral RNA replication and transcription. GTP, dGTP as well as cap analogs GpppG, GpppA and m7GpppG could be methylated by nsp14. |