7jsl

Crystal structure of the DNA binding domain of human transcription factor ERF in the oxidized form, in complex with double-stranded DNA ACCGGAAGTG

spinqualitylabelsall models 7jsl, resolution 4.51Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7jsl is a 12 chain structure with sequence from Homo sapiens and Synthetic construct. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 4.51Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed ETS family transcription factors control development of different cell types in humans, whereas deregulation of these proteins leads to severe developmental syndromes and cancers. One of a few members of the ETS family that are known to act solely as repressors, ERF, is required for normal osteogenesis and hematopoiesis. Another important function of ERF is acting as a tumor suppressor by antagonizing oncogenic fusions involving other ETS family factors. The structure of ERF and the DNA binding properties specific to this protein have not been elucidated. In this study, we determined two crystal structures of the complexes of the DNA binding domain of ERF with DNA. In one, ERF is in a distinct dimeric form, with Cys72 in a reduced state. In the other, two dimers of ERF are assembled into a tetramer that is additionally locked by two Cys72-Cys72 disulfide bonds across the dimers. In the tetramer, the ERF molecules are bound to a pseudocontinuous DNA on the same DNA face at two GGAA binding sites on opposite strands. Sedimentation velocity analysis showed that this tetrameric assembly forms on continuous DNA containing such tandem sites spaced by 7 bp. Our bioinformatic analysis of three previously reported sets of ERF binding loci across entire genomes showed that these loci were enriched in such 7 bp spaced tandem sites. Taken together, these results strongly suggest that the observed tetrameric assembly is a functional state of ERF in the human cell. Structural Insight into the DNA Binding Function of Transcription Factor ERF.,Hou C, McCown C, Ivanov DN, Tsodikov OV Biochemistry. 2020 Nov 11. doi: 10.1021/acs.biochem.0c00774. PMID:33175491 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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