1g5p

From Proteopedia

proteopedia linkproteopedia link

spinqualitylabelsall models 1g5p, resolution 2.2Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image

NITROGENASE IRON PROTEIN FROM AZOTOBACTER VINELANDII

Overview

The structure of the nitrogenase iron protein from Azotobacter vinelandii, in the all-ferrous [4Fe-4S](0) form has been determined to 2.25 A, resolution by using the multiwavelength anomalous diffraction (MAD), phasing technique. The structure demonstrates that major conformational, changes are not necessary either in the iron protein or in the cluster to, accommodate cluster reduction to the [4Fe-4S](0) oxidation state. A survey, of [4Fe-4S] clusters coordinated by four cysteine ligands in proteins of, known structure reveals that the [4Fe-4S] cluster of the iron protein has, the largest accessible surface area, suggesting that solvent exposure may, be relevant to the ability of the iron protein to exist in three oxidation, states.

About this Structure

1G5P is a Single protein structure of sequence from Azotobacter vinelandii with SF4 as ligand. Active as Nitrogenase, with EC number 1.18.6.1 Full crystallographic information is available from OCA.

Reference

Crystal structure of the all-ferrous [4Fe-4S]0 form of the nitrogenase iron protein from Azotobacter vinelandii., Strop P, Takahara PM, Chiu H, Angove HC, Burgess BK, Rees DC, Biochemistry. 2001 Jan 23;40(3):651-6. PMID:11170381

Page seeded by OCA on Tue Nov 20 15:43:40 2007