Protein L is derived from the large digestive streptococcus (Peptostreptococcus magnus), which is a protein that can combine with a wide range of immunoglobulins. The protein only binds to the kappa light chain of the antibody without affecting the antigen binding site of the antibody. This characteristic makes it more widely combined with various sources and subclasses of antibodies than protein A or protein G. It does not bind to immunoglobulins of bovine, goat or sheep origin and can be used to purify monoclonal antibodies from culture broth supplemented with BSA or FCS.

Size:：1 mg, 10 mg, 100 mg, 500 mg
Formulation: Lyophilized powder, solution 5mM PB(pH 7.4) before lyophilization
Mol. Wt.：41.5kDa
Theory pI：4.86
Purity：≥95%（SDS-PAGE）
Resources: Escherichia coli (E. coli)
Absorbance index: UV absorption method, extinction coefficient E(0.1% at 280 nm) = 0.862
Conditions of transport: Ambient Temp
Storage Condition: -20℃
Storage Duration: 3 years