6NMQ

Hypoxia-Inducible Factor (HIF) Prolyl Hydroxylase 2 (PHD2) in Complex with the Carboxamide Analog JNJ43058171

Summary for 6NMQ

• Entry DOI: 10.2210/pdb6nmq/pdb
• Related: 3OUJ
• Descriptor: Egl nine homolog 1, FE (II) ION, N-(4-oxo-1,4-dihydrocinnoline-3-carbonyl)glycine, ... (4 entities in total)
• Functional Keywords: phd2, hypoxia-inducible factor prolyl hydroxylase, iron-containing enzyme, cinnoline, oxidoreductase
• Biological source: Homo sapiens (Human)
• Total number of polymer chains: 1
• Total formula weight: 24232.28

Authors

Bembenek, S.D.,Mirzadegan, T. (deposition date: 2019-01-11, release date: 2019-04-24, Last modification date: 2024-03-13)

Primary citation

Bembenek, S.D.,Venkatesan, H.,Peltier, H.M.,Rosen, M.D.,Barrett, T.D.,Kanelakis, K.C.,Palomino, H.L.,Brondstetter, T.I.,Mirzadegan, T.,Rabinowitz, M.H.
Beyond Traditional Structure-Based Drug Design: The Role of Iron Complexation, Strain, and Water in the Binding of Inhibitors for Hypoxia-Inducible Factor Prolyl Hydroxylase 2.
Acs Omega, 4:6703-6708, 2019

PubMed Abstract: A combination of structure-based drug design and medicinal chemistry efforts led us from benzimidazole-2-carboxamide with modestly active hypoxia-inducible factor prolyl hydroxylase 2 inhibition to certain benzimidazole-2-pyrazole carboxylic acids that were more potent as well as orally efficacious stimulators of erythropoietin secretion in our in vivo mouse model. To better understand the structure-activity relationship, it was necessary to account for (i) the complexation of the ligand with the active site Fe, (ii) the strain incurred by the ligand upon binding, and (iii) certain key water interactions identified by a crystal structure analysis. With this more complete computational model, we arrived at an overarching paradigm that accounted for the potency differences between benzimidazole-2-carboxamide and benzimidazole-2-pyrazole carboxylic acid enzyme inhibitors. Moreover, the computational paradigm allowed us to anticipate that the bioisostere replacement strategy (amide → pyrazole), which had shown success in the benzimidazole series, was not generally applicable to other series. This illustrates that to fully reconcile the important ligand-active site interactions for certain targets, one often needs to move beyond traditional structure-based drug design (such as crystallographic analysis, docking, etc.) and appeal to a higher level of computational theory.

PubMed: 31179408
DOI: 10.1021/acsomega.9b00199

Experimental method

X-RAY DIFFRACTION (1.58 Å)