Ubiquitin is a small (8.5 kDa) regulatory protein that has been found in almost all tissues (ubiquitously) of eukaryotic organisms.It was discovered in 1975 by Gideon Goldstein and further characterized throughout the 1970s and 1980s. Activation: Ubiquitin is activated in a two-step reaction by an E1 ubiquitin-activating enzyme, which is dependent on ATP. 2  The initial step involves production of a ubiquitin-adenylate intermediate. 3  The E1 binds both ATP and ubiquitin and catalyses the acyl-adenylation of the C-terminus of the ubiqutin molecule.
How long does it take to freight forwarding from China to USA? Shipping from China To the East sea ports is generally 13 days, to the West sea ports is generally 23 day for sea freight from China ports to USA ports. Shipping from China to USA by air freight and express services is generally 2-5 days, depending on which airline company and express company.
UPS shipments are generally delivered within one to two business days. Your order confirmation will provide the delivery schedule details. Generally, the following guidelines will apply to supply orders: If your order is placed on a business day (excluding holidays) before 4:00 p.m. local time, it will be shipped by UPS the same day. If your order is placed after 4:00 p.m. local time, it will be shipped by UPS the following business day (excluding holidays). If your order is placed on Saturday or Sunday, it will be shipped by UPS the following Monday.