Ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO): A long-lived protein in the deep ocean

Mónica V. Orellana, Dennis A. Hansell

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


We demonstrate that the distribution of ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) in the deep North Pacific is a unique tracer for the accumulation of biochemically identifiable organic residue of the export flux. RuBisCO is found both dissolved and assembled in microgels in a dynamic gel-to-dissolved-to-gel continuum that may protect RuBisCO from degradation in the water column. High concentrations are located below biologically productive equatorial and subarctic systems, and low concentrations are associated with the subtropical gyre. RuBisCO tracks the advective transport of export products along deep circulation pathways of the ocean interior, serving as a quantifiable biochemical tracer of modern organic carbon exported to and resident in the deep ocean.

Original languageEnglish (US)
Pages (from-to)826-834
Number of pages9
JournalLimnology and Oceanography
Issue number3
StatePublished - Mar 2012

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science


Dive into the research topics of 'Ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO): A long-lived protein in the deep ocean'. Together they form a unique fingerprint.

Cite this