Avidin. The extraordinary affinity of avidin for biotin allows biotin-containing molecules in a complex mixture to be specifically bound to avidin. Avidin is a glycoprotein found in the egg white and tissues of birds, reptiles and amphibia.It contains four identical subunits having a combined mass of 67 to 68kDa.n contrast to avidin, though, streptavidin is not glycosylated, which makes the protein less-prone to nonspecific binding in IHC applications. Pierce products use a recombinant form of streptavidin, having a mass of 53kDa and a near-neutral pI.
The Story Behind Chipotle Mexican Grill. Franchises. Chipotle Mexican Grill was founded by Steve Ells in 1993 and based in Denver, Colorado. The name Chipotle derives from the Mexican Spanish name for a smoked, dried jalapeÃ±o chili pepper.
After success there, he opened his second restaurant in 1995, and continued to build the chain, getting a boost with an investment from McDonaldâs in 1998 (which has since fully divested). Today, Chipotle has more than 1,200 locations in 41 states, as well as in Canada and England, with income of $215 million in 2011.ew Franchise Investment Opportunities. It's true that Chipotle used to be the fresh, fast-growing new kid on the block, but its days of posting yearly double-digit increases in sales are well behind it (just check out the company's financial filings to see for yourself).