H-DNA

The English word “H-DNA” has 2 meanings listed here.

noun

A configuration of DNA, a triple-stranded DNA helix structure, right-hand twisting, where the third DNA strand fills in the major groove found in B-DNA, bonding to the B-DNA with Hoogsteen-type bonding, forming Hoogsteen base pairs.
A DNA helix in such a configuration.

From H + DNA. From containing Hoogsteen-type nucleobase bonding, in addition to Watson-Crick normal style bonding of base pairs.

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