PMID: 9450343Feb 5, 1998Paper

Developmental and light-dependent changes of the cytosolic chaperonin containing TCP-1 (CCT) subunits in maize seedlings, and the localization in coleoptiles

The Plant Journal : for Cell and Molecular Biology
R HimmelspachB Ehmann

Abstract

The cytosolic chaperonin containing TCP-1 (CCT) is known to keep fold cytoskeletal proteins and is involved in the proper organization of the cytoskeleton. These studies are based on the assumption that growth responses linked to structural rearrangement of the plant cytoskeleton include the action of CCT and the need for newly synthesized tubulin. The presence of the alpha- and epsilon-subunits of CCT was investigated in soluble fractions of protein extracts from maize mesocotyls and coleoptiles at distinct growth stages. The CCT-subunits, tubulins and actin decreased in the coleoptile in response to far-red light. In addition, independent from light treatment, the amount of CCT epsilon abundance declined with age in coleoptiles and mesocotyls between 2 and 4.5 days after sowing. In contrast to CCT epsilon, no significant light regulation of CCT alpha was found in the mesocotyl. In two day old, light-grown rapidly elongating coleoptiles part of the CCT alpha subunit and the bulk of actin and tubulin was found shifted into fractions of high molecular weight complexes when compared to slowly elongating, dark grown coleoptiles. In 4.5 day old, etiolated and elongating coleoptiles, part of both CCT-subunits and cytoskeleton protei...Continue Reading

Citations

Nov 1, 2011·Journal of Proteomics·Afshin SalavatiSetsuko Komatsu
Dec 1, 2010·Biomolecular Concepts·João GonçalvesHelena Soares
Jan 31, 2004·Cell Motility and the Cytoskeleton·Zhengyuan Wang, Thomas C Pesacreta
Oct 2, 2002·Plant & Cell Physiology·Akiyo YamadaYoshihiro Ozeki

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