Structure of a duck H3 variant histone gene: a H3 subtype with four cysteine residues
- PMID: 4092933
- DOI: 10.1016/0378-1119(85)90323-3
Structure of a duck H3 variant histone gene: a H3 subtype with four cysteine residues
Abstract
A duck recombinant DNA phage library was screened for H3 histone genes, and the sequence of a variant H3 gene, which appears not to be part of a histone gene cluster, has been determined. As derived from the nucleotide sequence, this gene codes for a 135-amino acid (aa) protein (as any other H3) and shows 10 aa substitutions compared with most published H3 structures. Six of these aa changes are based on one nucleotide (nt) substitutions in arginine codons. This results in three new histidines and, in addition to the highly conserved cysteine at position 110, three more cysteines are found in this H3 histone subtype.
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