1hgu is a 1 chain structure with sequence from Homo sapiens. The April 2004 RCSB PDB Molecule of the Month feature on Growth Hormone by Shuchismita Dutta and David S. Goodsell is 10.2210/rcsb_pdb/mom_2004_4. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.