3HO4: Crystal Structure Of Hedgehog-Interacting Protein (Hhip)
reference: The structure of SHH in complex with HHIP reveals a recognition role for the Shh pseudo active site in signaling., Bosanac I, Maun HR, Scales SJ, Wen X, Lingel A, Bazan JF, de Sauvage FJ, Hymowitz SG, Lazarus RA, Nat Struct Mol Biol. 2009 Jul;16(7):691-7. Epub 2009 Jun 28. PMID: 19561609

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