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3ldh is a 1 chain structure with sequence from Squalus acanthias. The June 2008 RCSB PDB Molecule of the Month feature on Lactate Dehydrogenase by David S. Goodsell is 10.2210/rcsb_pdb/mom_2008_6. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.