[Term] id: PR:000040180 name: histone H3.3 isoform 1 def: "A histone H3.3 that is a translation product of some mRNA whose exon structure and start site selection renders it capable of giving rise to a protein with the amino acid sequence represented by UniProtKB:P84243-1 or a 1:1 ortholog thereof." [PRO:DNx] comment: Category=sequence. synonym: "H3.3/iso:1" EXACT PRO-short-label [PRO:DNx] property_value: has_archetype PR:P84243-1 is_a: PR:000008425 ! histone H3.3