Spindlin-1 recognizes methylations of K20 and R23 of histone H4 tail

FEBS Lett. 2018 Dec;592(24):4098-4110. doi: 10.1002/1873-3468.13281. Epub 2018 Nov 17.

Abstract

Using methods combining cross-linking, pull-down assays, and stable isotope labeling by amino acids in cell culture with mass spectrometry, we identified that the Tudor domain-containing protein Spindlin-1 recognizes trimethylation of histone H4 lysine 20 (H4K20me3). The binding affinity of Spindlin-1 to H4K20me3 is weaker than that to H3K4me3, indicating H4K20me3 as a secondary substrate for Spindlin-1. Structural studies of Spindlin-1 in complex with the H4K20me3 peptide indicate that Spindlin-1 attains a distinct binding mode for H4K20me3 recognition. Further biochemical analysis identified that Spindlin-1 also binds methylated R23 of H4, providing new clues for the function of Spindlin-1.

Keywords: H4K20; H4R23; crystal structure; histone methylation; molecular mechanism; spindlin-1.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Arginine / chemistry
  • Arginine / metabolism
  • Cell Cycle Proteins / chemistry
  • Cell Cycle Proteins / genetics
  • Cell Cycle Proteins / metabolism*
  • Crystallography, X-Ray
  • HeLa Cells
  • Histones / chemistry
  • Histones / metabolism*
  • Humans
  • Lysine / chemistry
  • Lysine / metabolism
  • Methylation
  • Microtubule-Associated Proteins / chemistry
  • Microtubule-Associated Proteins / genetics
  • Microtubule-Associated Proteins / metabolism*
  • Models, Molecular
  • Mutation
  • Phosphoproteins / chemistry
  • Phosphoproteins / genetics
  • Phosphoproteins / metabolism*
  • Protein Binding
  • Protein Domains

Substances

  • Cell Cycle Proteins
  • Histones
  • Microtubule-Associated Proteins
  • Phosphoproteins
  • spindlin
  • Arginine
  • Lysine