1san

THE DES(1-6)ANTENNAPEDIA HOMEODOMAIN: COMPARISON OF THE NMR SOLUTION STRUCTURE AND THE DNA BINDING AFFINITY WITH THE INTACT ANTENNAPEDIA HOMEODOMAIN

spinqualitylabelsall models 1san Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1san is a 1 chain structure with sequence from Drosophila melanogaster. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Solution NMR Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function ANTP_DROME Sequence-specific transcription factor which is part of a developmental regulatory system that regulates segmental identity in the mesothorax. Provides cells with specific positional identities on the anterior-posterior axis. 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 nuclear magnetic resonance (NMR) solution structure of an N-terminally truncated mutant Antennapedia homeodomain, des(1-6)Antp(C39S), has been determined from 935 nuclear Overhauser effect upper distance constraints and 148 dihedral angle constraints by using the programs DIANA and OPAL. Twenty conformers representing the solution structure of des(1-6)Antp(C39S) have an average root-mean-square distance relative to the mean coordinates of 0.56 A for the backbone atoms of residues 8-59. Comparison with the intact Antp(C39S) homeodomain shows that the two proteins have identical molecular architectures. The removal of the N-terminal residues 1-6, which are flexibly disordered in the intact homeodomain, causes only strictly localized structure variations and does not noticeably affect the adjoining helix I from residues 10-21. The DNA-binding constant of des(1-6)Antp(C39S) is approximately 10-fold reduced relative to the intact Antp(C39S) homeodomain, which can now be attributed to the absence of the previously reported contacts of the N-terminal polypeptide segment of the intact Antp(C39S) homeodomain with the minor groove of the DNA duplex. The des(1-6)antennapedia homeodomain: comparison of the NMR solution structure and the DNA-binding affinity with the intact Antennapedia homeodomain.,Qian YQ, Resendez-Perez D, Gehring WJ, Wuthrich K Proc Natl Acad Sci U S A. 1994 Apr 26;91(9):4091-5. PMID:7909611 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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