Middle East respiratory syndrome coronavirus, Human betacoronavirus 2c EMC/2012, MERS-CoV, MERSCoV S2 P, Spike2 glycoprotein, S2 glycoprotein, S2, Spike S2 Subunit protein, S2 Subunit
Since April 2012, cases of the Middle East Respiratory Syndrome Coronavirus (MERS-CoV) have been identified in various countries. Coronaviruses are the cause of the common cold, SARS (severe acute respiratory syndrome) and other severe illnesses with high mortality rates, all are classified into coronavirus family. MERS-CoV is a new type of SARS found in the coronavirus family causing severe pneumonia with sudden and serious respiratory illness with high mortality rates as well. Since January 27th 2015, the WHO has reported 956 human cases, including 351 deaths. More cases of the new coronavirus strain are expected. Like in other coronaviruses, large surface spike glycoprotein is a central structural protein of this virus; it is located above the virion surface to bind and enter into the target cell. Spike protein has 2 domains- S1 and S2. The S1 domain is responsible for cellular tropism and interaction with target cell, while the S2 domain is responsible for membrane fusion. The C-terminal of S1 domain contains a receptor binding domain, and is also a potential target for vaccine development and an antigen for diagnosis.
SARS MERS S2 Recombinant produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 554 amino acids (752-1296aa) and having a molecular mass of 60.7kDa.
SARS MERS S2 is fused to a 6 amino acid His-tag at C-terminus & purified by proprietary chromatographic techniques.
Sf9, Baculovirus cells.
The SARS MERS S2 solution (0.25mg/ml) contains 10% glycerol and Phosphate-Buffered Saline (pH 7.4).
Store at 4°C if entire vial will be used within 2-4 weeks.
Store, frozen at -20°C for longer periods of time.
For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
Avoid multiple freeze-thaw cycles.
Greater than 85.0% as determined by SDS-PAGE.
Amino acid sequence
ADPSVPGEMR LASIAFNHPI QVDQLNSSYF KLSIPTNFSF GVTQEYIQTT IQKVTVDCKQ YVCNGFQKCE QLLREYGQFC SKINQALHGA NLRQDDSVRN LFASVKSSQS SPIIPGFGGD FNLTLLEPVS ISTGSRSARS AIEDLLFDKV TIADPGYMQG YDDCMQQGPA SARDLICAQY VAGYKVLPPL MDVNMEAAYT SSLLGSIAGV GWTAGLSSFA AIPFAQSIFY RLNGVGITQQ VLSENQKLIA NKFNQALGAM QTGFTTTNEA FQKVQDAVNN NAQALSKLAS ELSNTFGAIS ASIGDIIQRL DVLEQDAQID RLINGRLTTL NAFVAQQLVR SESAALSAQL AKDKVNECVK AQSKRSGFCG QGTHIVSFVV NAPNGLYFMH VGYYPSNHIE VVSAYGLCDA ANPTNCIAPV NGYFIKTNNT RIVDEWSYTG SSFYAPEPIT SLNTKYVAPQ VTYQNISTNL PPPLLGNSTG IDFQDELDEF FKNVSTSIPN FGSLTQINTT LLDLTYEMLS LQQVVKALNE SYIDLKELGN YTYYNKWPHH HHHH