What this page covers
Practice Step 1-style biochemistry questions on Histone H1 and higher-order chromatin compaction, including Drug-induced lupus, anti-histone antibodies, negative anti-dsDNA, linker histone whose loss impairs higher-order compaction while leaving nucleosome core intact, with emphasis on enzyme / mechanism and answer-choice reasoning.
How to use this page
Review the topic and reasoning focus, then practice Step 1-style questions inside BiochemStep. The question set emphasizes mechanism-first answer-choice reasoning rather than passive content review.