6dzt

Cryo-EM structure of nucleosome in complex with a single chain antibody fragment

Loading... Status: waiting for Mol* initialization Structural highlights 6dzt is a 12 chain structure with sequence from Drosophila melanogaster, Escherichia coli and Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 2.99Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function H3_DROME Publication Abstract from PubMed Genomic DNA in eukaryotes is organized into chromatin through association with core histones to form nucleosomes, each distinguished by their DNA sequences and histone variants. Here, we used a single-chain antibody fragment (scFv) derived from the anti-nucleosome antibody mAb PL2-6 to stabilize human CENP-A nucleosome containing a native alpha-satellite DNA and solved its structure by the cryo-electron microscopy (cryo-EM) to 2.6 A resolution. In comparison, the corresponding cryo-EM structure of the free CENP-A nucleosome could only reach 3.4 A resolution. We find that scFv binds to a conserved acidic patch on the histone H2A-H2B dimer without perturbing the nucleosome structure. Our results provide an atomic resolution cryo-EM structure of a nucleosome and insight into the structure and function of the CENP-A nucleosome. The scFv approach is applicable to the structural determination of other native-like nucleosomes with distinct DNA sequences. Atomic resolution cryo-EM structure of a native-like CENP-A nucleosome aided by an antibody fragment.,Zhou BR, Yadav KNS, Borgnia M, Hong J, Cao B, Olins AL, Olins DE, Bai Y, Zhang P Nat Commun. 2019 May 24;10(1):2301. doi: 10.1038/s41467-019-10247-4. PMID:31127102 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Histone 3D structures Monoclonal Antibodies 3D structures

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