1rjv

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1rjv, 19 NMR models ()
Ligands:
Gene: PVALB (Homo sapiens)
Resources: FirstGlance, OCA, PDBsum, RCSB
Coordinates: save as pdb, mmCIF, xml



Contents

Solution Structure of Human alpha-Parvalbumin refined with a paramagnetism-based strategy

Publication Abstract from PubMed

In the frame of a research aimed at the detailed structural characterization of human calcium-binding proteins of the EF-hand family, the solution structure of human alpha-parvalbumin has been solved by NMR and refined with the help of substitution of the Ca(2+) ion in the EF site with the paramagnetic Dy(3+) ion. A simple (1)H-(15)N HSQC spectrum allowed the NH assignments based on the properties of Dy(3+). This allowed us to exploit pseudocontact shifts and residual dipolar couplings for solution structure refinement. The backbone and heavy atom RMSD are 0.55 +/- 0.08 and 1.02 +/- 0.08 A, respectively, and decrease to 0.39 +/- 0.05 and 0.90 +/- 0.06 A upon refinement with paramagnetism-based restraints. The RMSD for the metal itself in the EF site in the refined structure is 0.26 +/- 0.12 A. Backbone NH R(1), R(2), and NOE measured at two temperatures show the protein to be relatively rigid. The NH orientations are well determined by the paramagnetism-based restraints. This allows us to detect small but significant local structural differences with the orthologue protein from rat, whose X-ray structure is available at 2.0 A resolution. All differences are related to local changes in the amino acidic composition.

Paramagnetism-based refinement strategy for the solution structure of human alpha-parvalbumin., Baig I, Bertini I, Del Bianco C, Gupta YK, Lee YM, Luchinat C, Quattrone A, Biochemistry. 2004 May 11;43(18):5562-73. PMID:15122922

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

About this Structure

1rjv is a 1 chain structure with sequence from Homo sapiens. Full experimental information is available from OCA.

See Also

Reference

  • Baig I, Bertini I, Del Bianco C, Gupta YK, Lee YM, Luchinat C, Quattrone A. Paramagnetism-based refinement strategy for the solution structure of human alpha-parvalbumin. Biochemistry. 2004 May 11;43(18):5562-73. PMID:15122922 doi:10.1021/bi035879k

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