preferred_name: 4 PBGs bind to form HMB (Saccharomyces cerevisiae)
preferred_name_lc: 4 pbgs bind to form hmb (saccharomyces cerevisiae)
label: 4 PBGs bind to form HMB (Saccharomyces cerevisiae)
label_lc: 4 pbgs bind to form hmb (saccharomyces cerevisiae)