“…AA3, which consist of four subfamilies (AA3_1, AA3_2, AA3_3, AA3_4), assists in lignocellulose degradation with its reaction products [78] , [79] . It has been relatively little studied in marine bacteria [78] , [79] , [80] , [81] . AA3 accounted for the largest proportion of AA enzymes among the four Bacteroidetes ( Table S5 ), indicating their potential activities in lignocellulose metabolism.…”