1i11

SOLUTION STRUCTURE OF THE DNA BINDING DOMAIN, SOX-5 HMG BOX FROM MOUSE

spinqualitylabelsall models 1i11, 30 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1i11 is a 1 chain structure with sequence from Lk3 transgenic mice. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Gene: SOX-5 (LK3 transgenic mice) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [SOX5_MOUSE] Binds specifically to the DNA sequence 5'-AACAAT-3'. Activates transcription of COL2A1 and AGC1 in vitro. 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 fold of the murine Sox-5 (mSox-5) HMG box in free solution has been determined by multidimensional NMR using (15)N-labeled protein and has been found to adopt the characteristic twisted L-shape made up of two wings: the major wing comprising helix 1 (F10--F25) and helix 2 (N32--A43), the minor wing comprising helix 3 (P51--Y67) in weak antiparallel association with the N-terminal extended segment. (15)N relaxation measurements show considerable mobility (reduced order parameter, S(2)) in the minor wing that increases toward the amino and carboxy termini of the chain. The mobility of residues C-terminal to Q62 is significantly greater than the equivalent residues of non-sequence-specific boxes, and these residues show a weaker association with the extended N-terminal segment than in non-sequence boxes. Comparison with previously determined structures of HMG boxes both in free solution and complexed with DNA shows close similarity in the packing of the hydrophobic cores and the relative disposition of the three helices. Only in hSRY/DNA does the arrangement of aromatic sidechains differ significantly from that of mSox-5, and only in rHMG1 box 1 bound to cisplatinated DNA does helix 1 have no kink. Helix 3 in mSox-5 is terminated by P68, a conserved residue in DNA sequence-specific HMG boxes, which results in the chain turning through approximately 90 degrees. Solution structure and backbone dynamics of the DNA-binding domain of mouse Sox-5.,Cary PD, Read CM, Davis B, Driscoll PC, Crane-Robinson C Protein Sci. 2001 Jan;10(1):83-98. PMID:11266597 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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