1fsl
From Proteopedia
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FERRIC SOYBEAN LEGHEMOGLOBIN COMPLEXED WITH NICOTINATE
Overview
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.
About this Structure
1FSL is a Single protein structure of sequence from Glycine max with HEM and NIO as ligands. Full crystallographic information is available from OCA.
Reference
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
Page seeded by OCA on Tue Nov 20 15:14:37 2007
