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Article Abstract

Sucrose phosphorylases are essential enzymes regulating sucrose metabolism, and it has been shown that a loop rearrangement is essential to their catalytic cycle. Crystal structures of only six sucrose phosphorylase enzymes are available. Here, we present the crystal structure of a sucrose phosphorylase from a proteobacterium, Alteromonas mediterranea, at 2.15 Å resolution. The available sucrose phosphorylase structures have shown that an important conformational change occurs during the catalytic cycle or upon mutagenesis. Interestingly, our data present clear indications of the two major conformations in the same crystal.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12210189PMC
http://dx.doi.org/10.1107/S2053230X25004327DOI Listing

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