4. b.69.10 3-carboxy-cis,cis-mucoante lactonizing enzyme 7-bladed beta-propeller consists of seven 4-stranded beta-sheet motifs; meander 1jof d1joff_ F:1-8,13-24,25-39,41-48,342-352 1jof d1jofa_ A:1-8,13-24,25-39,41-48,342-352 1jof d1jofg_ G:1-8,13-24,25-39,41-48,342-352 1jof d1jofh_ H:1-8,13-24,25-39,41-48,342-352 1jof d1jofb_ B:1-8,13-24,25-39,41-48,342-352 1jof d1jofd_ D:1-8,13-24,25-39,41-48,342-352