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SUMMARY:Pyrenoid formation is associated with RuBisCO small subunit alpha-
 helices in Chlamydomonas - Moritz Meyer\, Physiological Ecology Group
DTSTART:20111125T130000Z
DTEND:20111125T133000Z
UID:TALK33418@talks.cam.ac.uk
CONTACT:24938
DESCRIPTION:Aquatic photosynthesisers contribute to nearly half of the glo
 bal net primary production\, despite slow diffusivity and low availability
  of free CO2 in water. This productivity is supported by a series of bioph
 ysical carbon concentrating mechanisms (CCM)\, which use transmembrane tra
 nsporters\, carbonic anhydrases\, and the packaging of the carboxylating e
 nzyme RuBisCO into a sub-cellular microcompartment. In eukaryotic algae\, 
 this microcompartment is the pyrenoid\, which remains to this date without
  a precise molecular definition. Here\, using Chlamydomonas reinhardtii\, 
 a model unicellular green alga that induces a CCM when grown under atmosph
 eric CO2 levels\, we present evidence that the small subunits of RuBisCO p
 lay a crucial role in the packaging of the enzyme into the pyrenoid\, and 
 that pyrenoid occurrence is directly related to CCM expression.
LOCATION:Department of Plant Sciences\, Large Lecture Theatre
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