Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
SDS-PAGE analysis of the purified β-lactamase EBR-1 from a culture of E. coli BL21(pET-EBR-1). Lane A, Coomassie blue staining. The horizontal arrow on the left side indicates the migration position of β-lactamase EBR-1. Lane M, size of relative molecular masses expressed in kilodaltons is indicated on the right. Lane B, zymogram of EBR-1.
