Recombinant Streptococcus gordonii Platelet binding protein GspB (gspB), partial

EASSQTGRRRTRRAVTESAPNVEYHDVKGDMIQSVTTSFDDTSRLLTWTINLTPRQVKSNLGALVSISGNQETRTVTINGKNAANGGVYNSGGAWNLYTGESVNNNVLRITTQVNDTGGEVKLGLRLVTSDKKITKTNLPLEFSQVAATTNGSWDKAGYNTTIVEKDTERPVVNVPSEITVYRGESFEYFATVTDNSNAFDLAKTVVRWLYNNQPGRGTEWLQYSVTQVGNQLKVRIFGNVPIDTTIGDYTRYVVATDAAGNVNATQTEMGNAAVDKTSVNGQFKLIIRFRIKTPENTVFVNNPNQLTEVEKNLVREAVKKSNPDLRAQDVLNSNYVTGITVSNNGTTTITYRDGRKDIIDGSKFIDTRAGSISKSQSTSNSISV

Plays a role in virulence and host-pathogen interactions. Mediates binding to human platelets via interaction with the human cell surface glycoprotein GP1BA. Plays a positive role in biofilm formation, possibly by self-association via the basic region (BR) .

If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.

We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.

"An accessory sec locus of Streptococcus gordonii is required for export of the surface protein GspB and for normal levels of binding to human platelets." Bensing B.A., Sullam P.M. Mol. Microbiol. 44:1081-1094 (2002)

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.