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Download Hi-Res ImageDownload to MS-PowerPointCite This:J. Am. Chem. Soc. 2020, XXXX, XXX Learn More about expanded access to ACS Publications research. RETURN TO ARTICLES ASAPPREVCommunicationNEXT Li Shao Bin Hua* Xiangquan Hu David Stalla David Stalla Electron Microscopy Core Facility, University of Missouri, Columbia, Missouri 65211, United States Steven P. Kelley Jerry L.
Abstract Red mineral pigment use is recognized as a fundamental component of a series of traits associated with human evolutionary development, social interaction, and behavioral complexity. Iron-enriched mineral deposits have been collected and prepared as pigment for use in rock art, personal adornment, and mortuary practices for millennia, yet little is known about early developments in mineral processing techniques in North America.
Transmembrane bacterial chemoreceptors are extended, rod-shaped homodimers with ligand-binding sites at one end and interaction sites for formation of signaling complexes and histidine kinase control at the other. There are atomic-resolution structures of chemoreceptor fragments but not of intact, membrane-inserted receptors.
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