GROEL VARIANT: EL43PY

$43,000P41FY2010RRNIH

Baylor College Of Medicine, Houston TX

Investigators

Linked publications & trials

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Abstract

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. The inability of previous studies to trap and study a pre-triggered state of the GroEL-GroES complex is not surprising, given that wild-type GroEL populates this allosteric state only transiently (for about a hundred millisec), too short a time for most biochemical and biophysical manipulation. By contrast, our modified GroEL variant appears to undergo this transition at a considerably slower rate. We propose that a high-resolution structure of this new GroEL variant, exploiting the technical advances the NCMI has made in examining molecules like GroEL by cryo-EM, is likely to provide an unprecedented snap-shot of a critical allosteric state of the GroEL-GroES machine about which little is known.

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