FIG. 2.

Comparison of the amino acid sequence of β-lactamase CGB-1 with those of IND-1, IND-2, IND-3, and IND-4 from C. indologenes (4) and BlaB from C. meningosepticum (23). The BBL numbering scheme is indicated above the sequences (8). Broken lines and dots indicated identical and deleted amino acid residues, respectively. The vertical arrow indicates the putative cleavage site for the leader peptide of CGB-1. Amino acids that may be involved in binding of Zn²⁺ or/and water are indicated by a star.