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CtxB

CAT: 0793-32-13185-50Size: 50 µgDry Ice: NoHazardous: No
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CAT#:0793-32-13185-50Size:50 µg
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24/48H Stock Items & 2 to 6 Weeks non Stock Items.
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Description
Source: Escherichia Coli. Sterile filtered colorless solution. Cholera Toxin B subunit (ctxB) Cholera is a protein complex secreted by the bacterium Vibrio cholerae. ctxB is responsible for the massive, watery diarrhea characteristic of cholera infection. The cholera toxin is an oligomeric complex made up of 6 protein subunits: a single copy of the A subunit and5 copies of the B subunit, denoted as AB5. Subunit B binds while subunit A activates the G protein which activates adenylate cyclase. The five B subunits form a five-membered ring. The A subunit has 2 important segments. The A1 portion of the chain (CTA1) is a globular enzyme payload that ADP-ribosylates G proteins, while the A2 chain (CTA2) forms an extended alpha helix which sits snugly in the central pore of the B subunit ring. Cholera Toxin B subunit Recombinant produced in E.Coli is a single, non- glycosylated polypeptide chain containing 103 amino acids and having a molecular mass of 11.6kDa.ctxB is purified by proprietary chromatographic techniques.
Product Name Alternative
Cholera enterotoxin subunit B, Cholera enterotoxin B chain, Cholera enterotoxin gamma chain, Choleragenoid, ctxB, toxB.
Purification
Greater than 98.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE.
Components
CtxB is supplied as a 0.2 μm filtered solution conteining 5mM PB, pH 7.0, 75mM NaCl, and 50 % glycerol.
Storage Conditions
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.
Amino Acids
TPQNITDLCA EYHNTQIYTL NDKIFSYTES LAGKREMAII TFKNGAIFQV EVPGSQHIDS QKKAIERMKD TLRIAYLTEA KVEKLCVWNN KTPHAIAAIS MAN.

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