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.
Chipotle is also sourcing organic white and brown rice from McKaskle Family Farm in southern Missouri. Owner Steve McKaskle, who is the only producer of organic rice in Missouri, has been supplying rice to Chipotle restaurants in Little Rock, Arkansas and Memphis, Tennessee for more than a year.ow Chipotle is working with McKaskle to expand his production to supply 800,000 pounds of organic rice to 14 Chipotle restaurants in the Kansas City, MO area. McKaskle aims to supply organic rice to as many as 75 Chipotle restaurants in the next two to five years.