The nucleosomal surface as a docking station for Kaposi's sarcoma herpesvirus LANA. Journal Article uri icon

Overview

abstract

  • Kaposi's sarcoma-associated herpesvirus (KSHV) latency-associated nuclear antigen (LANA) mediates viral genome attachment to mitotic chromosomes. We find that N-terminal LANA docks onto chromosomes by binding nucleosomes through the folded region of histones H2A-H2B. The same LANA residues were required for both H2A-H2B binding and chromosome association. Further, LANA did not bind Xenopus sperm chromatin, which is deficient in H2A-H2B; chromatin binding was rescued after assembly of nucleosomes containing H2A-H2B. We also describe the 2.9-angstrom crystal structure of a nucleosome complexed with the first 23 LANA amino acids. The LANA peptide forms a hairpin that interacts exclusively with an acidic H2A-H2B region that is implicated in the formation of higher order chromatin structure. Our findings present a paradigm for how nucleosomes may serve as binding platforms for viral and cellular proteins and reveal a previously unknown mechanism for KSHV latency.

publication date

  • February 10, 2006

Full Author List

  • Barbera AJ; Chodaparambil JV; Kelley-Clarke B; Joukov V; Walter JC; Luger K; Kaye KM

Other Profiles

Additional Document Info

start page

  • 856

end page

  • 861

volume

  • 311

issue

  • 5762