The phosphomannomutase and phosphoglucomutase activity of a plant or plant part.
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Comment
The phosphomannomutase (PMM) / phosphoglucomutase (PGM) is a bifunctional enzyme. Catalyzes the reversible conversion of 1-phospho to 6-phospho-sugars (e.g. between mannose-1-phosphate and mannose-6-phosphate or glucose-1-phosphate and glucose-6-phosphate) via a bisphosphorylated sugar intermediate.