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                                                                                   Product Information Sheet
 
Product:            Rabbit anti-HA2 CD domain (Influenza virus H1 subtype) polyclonal IgG antibody.
 
Catalog#:         182401.
 
Description:     This polyclonal IgG antibody was generated in rabbits with the consensus HA2 CD sequence of                                 influenza virus H1 subtype [IENLNKKVDDGFLDIWTYNAELLVLLENERTLDYHDSNVKNLY                                             EKVRSQLKNN] fused to a natural nanoparticle protein carrier of E. Coli (Ref 1). The CD, also                                   known as long alpha helix (LAH), is a major part of the HA2 subunit of HA molecule and                                         constitutes the central part of HA stem (Ref 2 and see Figure). The IgG antibody was purified                                 from immune serum with protein A column.
 
Host species:    Rabbit.
 
Specificity:       HA2 of influenza H1 subtype. It has no or a very low level of cross reaction with HA2 of H3                                     subtype or B virus. The reaction of this antibody with HA increases drastically when HA is exposed                           to low pH as the result of increased exposure of HA2 or CD domain (Ref 3).
 
Amount:           100 µg IgG in 100 µl PBS containing 0.05% sodium azide as the preservative.
 
Storage:            2-8°C for routine use and -20°C for long-term storage.
 
Applications:
                         ELISA – quality tested with recombinant HA (H1N1) antigens with a titer ≥1:100,000.
                         Immunoblot – quality tested with inactivated influenza antigens (see Figure).
                         HA acid sensitivity by ELISA - quality tested with low pH-treated inactivated influenza antigens                                 (Ref 3).
 
References:     
                         1) Ni Y, Guo J, Turner D, Tizard I. Development of a novel dual-domain nanoparticle antigen                                   construct for universal influenza vaccine. Vaccine. 2017 Dec 15;35:7026-7032.
                         2) Bullough PA, Hughson FM, Skehel JJ, Wiley DC. Structure of influenza haemagglutinin at the pH of membrane fusion.                                     Nature. 1994 Sep 1;371:37-43.
                         3) Ni Y, Guo J, Turner D, Tizard I. An Improved Inactivated Influenza Vaccine with Enhanced Cross Protection. Front Immunol.                           2018 Aug 9;9:1815.
 
Notes:
                          For research use only and not for use in human subjects. All products are sold under the Terms and Conditions. 


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