Polychromatic solar energy conversion in pigment-protein chimeras that unite the two kingdoms of (bacterio)chlorophyll-based photosynthesis

Juntai Liu, Vincent M Friebe, Raoul N Frese, Michael R Jones

Research output: Contribution to journalArticle (Academic Journal)

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Abstract

Natural photosynthesis can be divided between the chlorophyll-containing plants, algae and cyanobacteria that make up the oxygenic phototrophs and a diversity of bacteriochlorophyll-containing bacteria that make up the anoxygenic phototrophs. Photosynthetic light harvesting and reaction centre proteins from both groups of organisms have been exploited in a wide range of biohybrid devices for solar energy conversion, solar fuel synthesis and a variety of sensing technologies, but the energy harvesting abilities of these devices are limited by each protein’s individual palette of (bacterio)chlorophyll, carotenoid and bilin pigments. In this work we demonstrate a range of genetically-encoded, self-assembling photosystems in which recombinant plant light harvesting complexes are covalently locked with reaction centres from a purple photosynthetic bacterium, producing macromolecular chimeras that display mechanisms of polychromatic solar energy harvesting and conversion not present in natural systems. Our findings illustrate the power of a synthetic biology approach in which bottom-up construction of a novel photosystem using naturally disparate but mechanistically complementary components is achieved in a predictable fashion through the genetic encoding of adaptable, plug-and-play covalent interfaces.
Original languageEnglish
Article number1542 (2020)
Number of pages12
JournalNature Communications
Volume11
DOIs
Publication statusPublished - 24 Mar 2020

Keywords

  • Antenna complex
  • Biomaterials – proteins
  • Protein design
  • Synthetic biology

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  • Student Theses

    Engineering of polychromatic photosystems for expanded solar energy conversion

    Author: Liu, J., 25 Jun 2019

    Supervisor: Jones, M. (Supervisor) & Woolfson, D. (Supervisor)

    Student thesis: Doctoral ThesisDoctor of Philosophy (PhD)

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