The human gut microbe Bacteroides thetaiotaomicron encodes the founding member of a novel glycosaminoglycan-degrading polysaccharide lyase family PL29 — A novel glycosaminoglycan-degrading enzyme family (PL29) — The human gut microbe Bacteroides thetaiotaomicron encodes the founding member of a novel glycosaminoglycan-degrading polysaccharide lyase family PL29 — A novel glycosaminoglycan-degrading enzyme family (PL29)