pectate lyase, PelA/Pel-15E family. Members of this family are isozymes of pectate lyase (EC 4.2.2.2), also called polygalacturonic transeliminase and alpha-1,4-D-endopolygalacturonic acid lyase. [Energy metabolism, Biosynthesis and degradation of polysaccharides]

Pectic acid lyase. Members of this family are isozymes of pectate lyase (EC:4.2.2.2), also called polygalacturonic transeliminase and alpha-1,4-D-endopolygalacturonic acid lyase.

Pectic acid lyase. Members of this family are isozymes of pectate lyase (EC:4.2.2.2), also called polygalacturonic transeliminase and alpha-1,4-D-endopolygalacturonic acid lyase.

Squalene cyclase (SQCY) domain; found in class II terpene cyclases that have an alpha 6 - alpha 6 barrel fold. Squalene cyclase (SQCY) and 2,3-oxidosqualene cyclase (OSQCY) are integral membrane proteins that catalyze a cationic cyclization cascade converting linear triterpenes to fused ring compounds. Bacterial SQCY catalyzes the convertion of squalene to hopene or diplopterol. Eukaryotic OSQCY transforms the 2,3-epoxide of squalene to compounds such as, lanosterol (a metabolic precursor of cholesterol and steroid hormones) in mammals and fungi or, cycloartenol in plants. Deletion of a single glycine residue of Alicyclobacillus acidocaldarius SQCY alters its substrate specificity into that of eukaryotic OSQCY. Both enzymes have a second minor domain, which forms an alpha-alpha barrel that is inserted into the major domain. This group also contains SQCY-like archael sequences and some bacterial SQCY's which lack this minor domain.

squalene/oxidosqualene cyclases. This family of enzymes catalyzes the cyclization of the triterpenes squalene or 2-3-oxidosqualene to a variety of products including hopene, lanosterol, cycloartenol, amyrin, lupeol, and isomultiflorenol.

ChainA, pectate lyase [Niveispirillum irakense]