Histone H2A, a component of DNA higher structure in eukaryotic cells
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H-2A Visa, a temporary, nonimmigrant visa allowing foreign nationals entry into the U.S. for seasonal agricultural work.
Histone H2A | H2A |
Two molecules of each of the four core histones (H2A, H2B, H3, and H4) form an octamer, around which approximately 146 bp of DNA is wrapped in repeating units, called nucleosomes.
It consists of two copies of each of the four core histone proteins (H2A, H2B, H3 and H4).