A Bandyopadhyay

A Melis

A Tsygankov

DB Levin

EA Welsh

GE Pinchuk

H Gaffron

H Masukawa

H Min

HC Bernstein

I Berman-Frank

J Červený

J-W Park

K Reddy

MA Schneegurt

MR Melnicki

MS Colon-Lopez

MS Colón-López

NC Sadler

NJ Skizim

R McClure

S Kosourov

UK Aryal

Scientific Reports

AbstractTo date, the proposed mechanisms of nitrogenase-driven photosynthetic H2 production by the diazotrophic unicellular cyanobacterium Cyanothece sp. ATCC 51142 have assumed that reductant and ATP requirements are derived solely from glycogen oxidation and cyclic-electron flow around photosystem I. Through genome-scale transcript and protein profiling, this study presents and tests a new hypothesis on the metabolic relationship between oxygenic photosynthesis and nitrogenase-mediated H2 production in Cyanothece 51142. Our results show that net-positive rates of oxygenic photosynthesis and increased expression of photosystem II reaction centers correspond and are synchronized with nitrogenase expression and H2 production. These findings provide a new and more complete view on the metabolic processes contributing to the energy budget of photosynthetic H2 production and highlight the role of concurrent photocatalytic H2O oxidation as a participating process.</jats:p

Hans C. Bernstein

Moiz A. Charania

Ryan S. McClure

Natalie C. Sadler

Matthew R. Melnicki

Eric A. Hill

Lye Meng Markillie

Carrie D. Nicora

Aaron T. Wright

Margaret F. Romine

Alexander S. Beliaev

Crossref

Multi-Omic Dynamics Associate Oxygenic Photosynthesis with Nitrogenase-Mediated H2 Production in Cyanothece sp. ATCC 51142

Multi-Omic Dynamics Associate Oxygenic Photosynthesis with Nitrogenase-Mediated H2 Production in Cyanothece sp. ATCC 51142

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