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Rhamnogalacturonan endolyase

The enzyme Rhamnogalacturonan endolyase (, rhamnogalacturonase B, α-<small>L</small>-rhamnopyranosyl-(1→4)-α-<small>D</small>-galactopyranosyluronide lyase, Rgase B, rhamnogalacturonan α-<small>L</small>rhamnopyranosyl-(1,4)-α-<small>D</small>-galactopyranosyluronide lyase, RG-lyase, YesW, RGL4, Rgl11A, Rgl11Y, RhiE) is an enzyme with systematic name α-<small>L</small>-rhamnopyranosyl-(1→4)-α-<small>D</small>-galactopyranosyluronate endolyase. catalyses the following process:

Endotype eliminative cleavage of <small>L</small>-α-rhamnopyranosyl-(1→4)-α-<small>D</small>-galactopyranosyluronic acid bonds of rhamnogalacturonan I domains in ramified hairy regions of pectin leaving <small>L</small>-rhamnopyranose at the reducing end and 4-deoxy-4,5-unsaturated <small>D</small>galactopyranosyluronic acid at the non-reducing end.

The enzyme is part of the degradation system for rhamnogalacturonan I in Bacillus subtilis strain 168 and Aspergillus aculeatus.

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