DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Controllable Phycobilin Modification: An Alternative Photoacclimation Response in Cryptophyte Algae

Journal Article · · ACS Central Science

Cryptophyte algae are well-known for their ability to survive under low light conditions using their auxiliary light harvesting antennas, phycobiliproteins. Mainly acting to absorb light where chlorophyll cannot (500-650 nm), phycobiliproteins also play an instrumental role in helping cryptophyte algae respond to changes in light intensity through the process of photoacclimation. Until recently, photoacclimation in cryptophyte algae was only observed as a change in the cellular concentration of phycobiliproteins; however, an additional photoacclimation response was recently discovered that causes shifts in the phycobiliprotein absorbance peaks following growth under red, blue, or green light. Here, we reproduce this newly identified photoacclimation response in two species of cryptophyte algae and elucidate the origin of the response on the protein level. We compare isolated native and photoacclimated phycobiliproteins for these two species using spectroscopy and mass spectrometry, and we report the X-ray structures of each phycobiliprotein and the corresponding photoacclimated complex. We find that neither the protein sequences nor the protein structures are modified by photoacclimation. We conclude that cryptophyte algae change one chromophore in the phycobiliprotein β subunits in response to changes in the spectral quality of light. Ultrafast pump-probe spectroscopy shows that the energy transfer is weakly affected by photoacclimation.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Princeton University, NJ (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); National Institute of General Medical Sciences (NIGMS); National Institutes of Health (NIH); Canadian Institute for Advanced Research (CIFAR)
Grant/Contract Number:
SC0012704
OSTI ID:
1982013
Journal Information:
ACS Central Science, Journal Name: ACS Central Science Journal Issue: 3 Vol. 8; ISSN 2374-7943
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (40)

Cooperative Subunit Refolding of a Light‐Harvesting Protein through a Self‐Chaperone Mechanism journal February 2017
Spectral Variability in Phycocyanin Cryptophyte Antenna Complexes is Controlled by Changes in the α‐Polypeptide Chains journal May 2019
Light-Harvesting Antennas in Photosynthesis book January 2003
Cryptomonad biliproteins: Bilin types and locations journal May 1996
Freeze fracture immunocytochemistry of light-harvesting pigment complexes in a cryptophyte journal September 1992
Phycobiliprotein diffusion in chloroplasts of cryptophyte Rhodomonas CS24 journal February 2009
Phycobilisome: architecture of a light-harvesting supercomplex journal October 2013
Proteomic analysis of the phycobiliprotein antenna of the cryptophyte alga Guillardia theta cultured under different light intensities journal May 2017
Vibronic Enhancement of Algae Light Harvesting journal December 2016
Vibronic Wavepackets and Energy Transfer in Cryptophyte Light-Harvesting Complexes journal May 2018
Photosynthetic Light-Harvesting Is Tuned by the Heterogeneous Polarizable Environment of the Protein journal March 2011
Mediation of Ultrafast Light-Harvesting by a Central Dimer in Phycoerythrin 545 Studied by Transient Absorption and Global Analysis journal July 2005
How Energy Funnels from the Phycoerythrin Antenna Complex to Photosystem I and Photosystem II in Cryptophyte Rhodomonas CS24 Cells
  • van der Weij-De Wit, Chantal D.; Doust, Alexander B.; van Stokkum, Ivo H. M.
  • The Journal of Physical Chemistry B, Vol. 110, Issue 49 https://doi.org/10.1021/jp061546w
journal November 2006
Energy Flow in the Cryptophyte PE545 Antenna Is Directed by Bilin Pigment Conformation journal October 2012
Coherent Oscillations in the PC577 Cryptophyte Antenna Occur in the Excited Electronic State journal January 2014
Coherently wired light-harvesting in photosynthetic marine algae at ambient temperature journal February 2010
Solar light harvesting by energy transfer: from ecology to coherence journal January 2012
Chromatic adaptation and the evolution of light color sensing in cyanobacteria journal May 2010
Phycoerythrin-specific bilin lyase-isomerase controls blue-green chromatic acclimation in marine Synechococcus journal November 2012
Present and future global distributions of the marine Cyanobacteria Prochlorococcus and Synechococcus journal May 2013
Single-residue insertion switches the quaternary structure and exciton states of cryptophyte light-harvesting proteins journal June 2014
Self-regulating genomic island encoding tandem regulators confers chromatic acclimation to marine Synechococcus journal May 2016
Light color acclimation is a key process in the global ocean distribution of Synechococcus cyanobacteria journal February 2018
Evolution of a light-harvesting protein by addition of new subunits and rearrangement of conserved elements: Crystal structure of a cryptophyte phycoerythrin at 1.63-A resolution journal August 1999
Insights into the Biosynthesis and Assembly of Cryptophycean Phycobiliproteins journal September 2014
Localization of phycoerythrin at the lumenal surface of the thylakoid membrane in Rhodomonas lens. journal March 1989
The Timescale of Phenotypic Plasticity and Its Impact on Competition in Fluctuating Environments journal November 2008
Emerging Perspectives on the Mechanisms, Regulation, and Distribution of Light Color Acclimation in Cyanobacteria journal January 2012
Unique Location of the Phycobiliprotein Light-Harvesting Pigment in the Cryptophyceae journal September 1989
Light capture and pigment diversity in marine and freshwater cryptophytes journal December 2018
Photopigment, Absorption, and Growth Responses of Marine Cryptophytes to Varying Spectral Irradiance journal February 2020
Extensive remodeling of a cyanobacterial photosynthetic apparatus in far-red light journal August 2014
Biochemical Bases of Type IV Chromatic Adaptation in Marine Synechococcus spp journal May 2006
Occurrence and nature of chromatic adaptation in cyanobacteria. journal January 1977
The phycobilisome, a light-harvesting complex responsive to environmental conditions. journal January 1993
Phycoerythrin Association with Photosystem II in the Cryptophyte Alga Rhodomonas salina journal June 2020
Chromatic Acclimation in Cyanobacteria: A Diverse and Widespread Process for Optimizing Photosynthesis journal September 2019
Non-Photochemical Quenching in Cryptophyte Alga Rhodomonas salina Is Located in Chlorophyll a/c Antennae journal January 2012
What Happened to the Phycobilisome? journal November 2019
Carotenoids in Algae: Distributions, Biosyntheses and Functions journal June 2011