8jbx

Human canonical 601 DNA nucleosome

spinqualitylabelsall models 8jbx, resolution 3.35Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 8jbx is a 10 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: Electron Microscopy, Resolution 3.35Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function H31_HUMAN Publication Abstract from PubMed Multiple testis-specific histone variants are involved in the dynamic chromatin transitions during spermatogenesis. H2B.W1 (previously called H2BFWT) is an H2B variant specific to primate testis with hitherto unclear functions, although its single-nucleotide polymorphisms (SNPs) are closely associated with male non-obstructive infertility. Here, we found that H2B.W1 is only expressed in the mid-late spermatogonia stages, and H2B.W1 nucleosomes are defined by a more flexible structure originating from weakened interactions between histones and DNA. Furthermore, one of its SNPs, H2B.W1-H100R, which is associated with infertility, further destabilizes the nucleosomes and increases the nucleosome unwrapping rate by interfering with the R100 and H4 K91/R92 interaction. Our results suggest that destabilizing H2B.W1 containing nucleosomes might change the chromatin structure of spermatogonia, and that H2B.W1-H100R enhances the nucleosome-destabilizing effects, leading to infertility. Testis-specific H2B.W1 disrupts nucleosome integrity by reducing DNA-histone interactions.,Ding D, Pang MYH, Deng M, Nguyen TT, Liu Y, Sun X, Xu Z, Zhang Y, Zhai Y, Yan Y, Ishibashi T Nucleic Acids Res. 2024 Oct 28;52(19):11612-11625. doi: 10.1093/nar/gkae825. PMID:39329259 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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