For 10 points, name this process which epigenetically regulates transcription by altering the position and structure of nucleosomes.
One protein complex which participates in this process has been theorized to work via a "loop recapture" mechanism. Several proteins which participate in this process use SANT domains to bind to their substrates. PcG response elements are involved in recruitment of a complex of proteins which perform this process called Polycomb proteins. Genetic screening of "sucrose non-fermenting" and "switch" mutants of yeast led to the discovery of a complex which performs that process; that's the SWI/SNF complex, which can open up binding sites for TBP. Another protein involved in this process replaces the canonical H2A-H2B dimers with Htz1-H2B dimers, allowing regulatory proteins to bind to the acetylated tails of histones. For 10 points, name this process which epigenetically regulates transcription by altering the position and structure of nucleosomes.
One protein complex which participates in this process has been theorized to work via a "loop recapture" mechanism.
chromatin remodeling [or nucleosome remodeling; prompt on "regulating transcription" or "gene silencing"]