1fsl | pdb_00001fsl

FERRIC SOYBEAN LEGHEMOGLOBIN COMPLEXED WITH NICOTINATE

spinqualitylabelsall models 1fsl, resolution 2.30Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1fsl is a 2 chain structure with sequence from Glycine max. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: HEM, NIO Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [LGBA_SOYBN] Provides oxygen to the bacteroids. This role is essential for symbiotic nitrogen fixation. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Soybean leghemoglobin a is a small (16 kDa) protein facilitating the transport of O(2) to respiring N(2)-fixing bacteria at low free-O(2) tension. The crystal structure of soybean ferric leghemoglobin a nicotinate has been refined at 2.3 A resolution. The final R factor is 15.8% for 6877 reflections between 6.0 and 2.3 A. The structure of soybean leghemoglobin a (143 residues) is closely similar to that of lupin leghemoglobin II (153 residues), the proteins having 82 identical residues when the sequences are aligned. The new structure provides support for the conclusion that the unique properties of leghemoglobin arise principally from a heme pocket considerably larger and more flexible than that of myoglobin, a strongly ruffled heme group, and a proximal histidine orientation more favourable to ligand binding. Structure of ferric soybean leghemoglobin a nicotinate at 2.3 A resolution.,Ellis PJ, Appleby CA, Guss JM, Hunter WN, Ollis DL, Freeman HC Acta Crystallogr D Biol Crystallogr. 1997 May 1;53(Pt 3):302-10. PMID:15299933 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Hemoglobin 3D structures

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