title: Gas access to the active site of Ni-Fe hydrogenases probed by X-ray crystallography and molecular dynamics.
abstract: The 2.54 A resolution structure of Ni-Fe hydrogenase has revealed the existence of hydrophobic channels connecting the molecular surface to the active site. A crystallographic analysis of xenon binding together with molecular dynamics simulations of xenon and H2 diffusion in the enzyme interior suggest that these channels serve as pathways for gas access to the active site.
authors.forename: Y
authors.initials: Y
authors.lastname: Montet
authors.forename: P
authors.initials: P
authors.lastname: Amara
authors.forename: A
authors.initials: A
authors.lastname: Volbeda
authors.forename: X
authors.initials: X
authors.lastname: Vernede
authors.forename: E C
authors.initials: EC
authors.lastname: Hatchikian
authors.forename: M J
authors.initials: MJ
authors.lastname: Field
authors.forename: M
authors.initials: M
authors.lastname: Frey
authors.forename: J C
authors.initials: JC
authors.lastname: Fontecilla-Camps
mesh_terms: D001665:Binding Sites; D003198:Computer Simulation; D018360:Crystallography, X-Ray; D003901:Desulfovibrio / Q000201:enzymology; D005740:Gases / Q000378:metabolism*; D006859:Hydrogen / Q000378:metabolism; D006864:Hydrogenase / Q000737:chemistry* / Q000378:metabolism*; D008958:Models, Molecular; D011487:Protein Conformation; D013329:Structure-Activity Relationship; D014978:Xenon / Q000378:metabolism
chemical_list: D005740:Gases; D014978:Xenon; D006859:Hydrogen; C043296:nickel-iron hydrogenase; D006864:Hydrogenase