7vbm

The mouse nucleosome structure containing H3mm18 aided by PL2-6 scFv

spinqualitylabelsall models 7vbm, resolution 3.40Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7vbm is a 10 chain structure with sequence from Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 3.4Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function H4_MOUSE Publication Abstract from PubMed Histone H3mm18 is a non-allelic H3 variant expressed in skeletal muscle and brain in mice. However, its function has remained enigmatic. We found that H3mm18 is incorporated into chromatin in cells with low efficiency, as compared to H3.3. We determined the structures of the nucleosome core particle (NCP) containing H3mm18 by cryo-electron microscopy, which revealed that the entry/exit DNA regions are drastically disordered in the H3mm18 NCP. Consistently, the H3mm18 NCP is substantially unstable in vitro. The forced expression of H3mm18 in mouse myoblast C2C12 cells markedly suppressed muscle differentiation. A transcriptome analysis revealed that the forced expression of H3mm18 affected the expression of multiple genes, and suppressed a group of genes involved in muscle development. These results suggest a novel gene expression regulation system in which the chromatin landscape is altered by the formation of unusual nucleosomes with a histone variant, H3mm18, and provide important insight into understanding transcription regulation by chromatin. Unusual nucleosome formation and transcriptome influence by the histone H3mm18 variant.,Hirai S, Tomimatsu K, Miyawaki-Kuwakado A, Takizawa Y, Komatsu T, Tachibana T, Fukushima Y, Takeda Y, Negishi L, Kujirai T, Koyama M, Ohkawa Y, Kurumizaka H Nucleic Acids Res. 2022 Jan 11;50(1):72-91. doi: 10.1093/nar/gkab1137. PMID:34929737 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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