2cav | pdb_00002cav

CANAVALIN FROM JACK BEAN

spinqualitylabelsall models 2cav, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2cav is a 1 chain structure with sequence from Canavalia ensiformis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Related: 2cau Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [CANA_CANEN] Seed storage protein. 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 The structure of canavalin was refined to 2.1 and 2.0 A resolution in cubic and hexagonal crystals of space group P2(1)3 and P6(3), respectively. The threefold molecular symmetry is expressed in the symmetry of both crystals, where each identical subunit is an asymmetric unit. The canavalin subunit consists of two very similar domains, each comprised of a core subdomain having Swiss-roll topology with a loop subdomain that contains helices. The refined canavalin models resolved the discrepancy in amino-acid registers of the secondary-structural elements compared with phaseolin. The presence of strand Z in both domains of canavalin was confirmed and a new helix in the loop between strands A and B of each domain was observed. The models were analyzed in terms of the duplicated vicilin domains. Three strictly conserved residues, two glycines and a proline, were identified. The similarity between entire vicilin molecules is greater than that between separate domains of canavalin and phaseolin. Homology modeling of the sucrose-binding protein (SBP) from soybean showed a plausible trimeric assembly of subunits similar to that of vicilins. The refined structure of canavalin from jack bean in two crystal forms at 2.1 and 2.0 A resolution.,Ko TP, Day J, McPherson A Acta Crystallogr D Biol Crystallogr. 2000 Apr;56(Pt 4):411-20. PMID:10739914 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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