ID   1.13.11.87
DE   endo-cleaving rubber dioxygenase.
AN   latex clearing protein.
CA   Cleavage of cis-1,4-polyisoprene polymers into a mixture of compounds,
CA   including a C20 compound ((4Z,8Z,12Z,16Z,20Z,24Z)-4,8,12,16,20,24-
CA   hexamethyl-28-oxononacosa-4,8,12,16,20,24-hexaenal), a C25 compound
CA   ((4Z,8Z,12Z,16Z,20Z)-4,8,12,16,20-pentamethyl-24-oxopentacosa-
CA   4,8,12,16,20-pentaenal), a C30 compound ((4Z,8Z,12Z,16Z)-4,8,12,16-
CA   tetramethyl-20-oxohenicosa-4,8,12,16-tetraenal), and higher molecular
CA   weight compounds.
CC   -!- The enzyme catalyzes the cleavage of the double bonds in natural and
CC       synthetic rubber, producing a mixture of C20, C25, C30, and higher
CC       oligo-isoprenoids with ketone and aldehyde groups at their ends.
CC   -!- Two unrelated bacterial enzymes are known to possess this activity -
CC       the enzyme from Streptomyces sp. K30 (Lcp) contains a b-type
CC       cytochrome, while the enzyme from Xanthomonas sp. 35Y, (RoxB)
CC       contains two c-type cytochromes.
CC   -!- Both enzymes attack the substrate at random locations, and are not
CC       able to cleave the C35 or smaller products into shorter fragments.
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