Modeling three-dimensional structure of two closely related Ni-Fe hydrogenases

摘要: The results of homology modeling HydSL, a NiFe-hydrogenase from purple sulfur bacterium Thiocapsa roseopersicina BBS, and deep-water Alteromonas macleodii deep ecotype are presented in this work. It is shown that the models have larger confidence level than earlier published ones; full-size these enzymes for first time. C-end fragment small subunit T. hydrogenase to random orientation relation main protein globule. obtained enzyme large number ion pairs, as well thermostable HydSL Allochromatium vinosum, contrast Alt. thermolabile HydAB Desulfovibrio vulgaris. possible determinant oxygen stability studied hydrogenases could be lack several intramolecular tunnels. Hydrophobic electrostatic surfaces were mapped order find out pathways coupling electron-transferring chains, methods construction artificial photobiohydrogen-producing systems.