Synonym(s): IL-1β; Interleukin-1β from rat; Lymphocyte activating factor
Purity: ≥98% (SDS-PAGE and HPLC)
Physical form: Lyophilized from a 0.2 μm filtered buffered solution.
Analysis Note: The biological activity is measured in a cell proliferation assay using murine D10S cells.
Other Notes: The two closely related agents, Interleukin-1α (IL-1α) and Interleukin-1Β (IL-1Β) bind to the same cell surface receptor, elicit nearly identical biological responses and yet share 25% homology in their amino acid sequence.
Storage: −20°C
Empirical Formula (Hill Notation): C4H12N2 · HCl