Self-assembly and structural-functional flexibility of oxygenic photosynthetic machineries: Personal perspectives

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This short review, with a bit of historical aspect and a strong personal bias and emphases on open questions, is focusing on the (macro-)organization and structural-functional flexibilities of the photosynthetic apparatus of oxygenic photosynthetic organisms at different levels of the structural complexity - selected problems that have attracted most my attention in the past years and decades. These include (i) the anisotropic organization of the pigment-protein complexes and photosynthetic membranes - a basic organizing principle of living matter, which can, and probably should be adopted to intelligent materials; (ii) the organization of protein complexes into chiral macrodomains, large self-assembling highly organized but structurally flexible entities with unique spectroscopic fingerprints - structures, where, important, high-level regulatory functions appear to 'reside'; (iii) a novel, dissipation-assisted mechanism of structural changes, based on a thermo-optic effect: ultrafast thermal transients in the close vicinity of dissipation of unused excitation energy, which is capable of inducing elementary structural changes; it makes plants capable of responding to excess excitation with reaction rates proportional to the overexcitation above the light-saturation of photosynthesis; (iv) the 3D ultrastructure of the granum-stroma thylakoid membrane assembly and other multilamellar membrane systems, and their remodelings - associated with regulatory mechanisms; (v) the molecular organization and structural-functional plasticity of the main light-harvesting complex of plants, in relation to their crystal structure and different in vivo and in vitro states; and (vi) the enigmatic role of non-bilayer lipids and lipid phases in the bilayer thylakoid membrane - warranting its high protein content and contributing to its structural flexibility.

Original languageEnglish
Pages (from-to)131-150
Number of pages20
JournalPhotosynthesis Research
Volume127
Issue number1
DOIs
Publication statusPublished - Jan 1 2016

Fingerprint

Thylakoids
thylakoids
Self assembly
Organizations
grana
light harvesting complex
autotrophs
lipids
crystal structure
optics
Membranes
Photosynthetic Reaction Center Complex Proteins
Lipids
Light
Photosynthetic membranes
ultrastructure
Proteins
proteins
pigments
protein content

Keywords

  • Chlorophyll fluorescence transitions
  • Conformational changes in photosystem II reaction center
  • Molecular architecture of LHCII
  • Non-bilayer lipids and lipid phases
  • The 3D ultrastructure of thylakoid membranes and their flexibilty
  • Thermo-optic mechanism

ASJC Scopus subject areas

  • Plant Science
  • Cell Biology
  • Biochemistry

Cite this

Self-assembly and structural-functional flexibility of oxygenic photosynthetic machineries : Personal perspectives. / Garab, Gyozo.

In: Photosynthesis Research, Vol. 127, No. 1, 01.01.2016, p. 131-150.

Research output: Contribution to journalArticle

@article{b18210ec503f46868044d876fb7cf065,
title = "Self-assembly and structural-functional flexibility of oxygenic photosynthetic machineries: Personal perspectives",
abstract = "This short review, with a bit of historical aspect and a strong personal bias and emphases on open questions, is focusing on the (macro-)organization and structural-functional flexibilities of the photosynthetic apparatus of oxygenic photosynthetic organisms at different levels of the structural complexity - selected problems that have attracted most my attention in the past years and decades. These include (i) the anisotropic organization of the pigment-protein complexes and photosynthetic membranes - a basic organizing principle of living matter, which can, and probably should be adopted to intelligent materials; (ii) the organization of protein complexes into chiral macrodomains, large self-assembling highly organized but structurally flexible entities with unique spectroscopic fingerprints - structures, where, important, high-level regulatory functions appear to 'reside'; (iii) a novel, dissipation-assisted mechanism of structural changes, based on a thermo-optic effect: ultrafast thermal transients in the close vicinity of dissipation of unused excitation energy, which is capable of inducing elementary structural changes; it makes plants capable of responding to excess excitation with reaction rates proportional to the overexcitation above the light-saturation of photosynthesis; (iv) the 3D ultrastructure of the granum-stroma thylakoid membrane assembly and other multilamellar membrane systems, and their remodelings - associated with regulatory mechanisms; (v) the molecular organization and structural-functional plasticity of the main light-harvesting complex of plants, in relation to their crystal structure and different in vivo and in vitro states; and (vi) the enigmatic role of non-bilayer lipids and lipid phases in the bilayer thylakoid membrane - warranting its high protein content and contributing to its structural flexibility.",
keywords = "Chlorophyll fluorescence transitions, Conformational changes in photosystem II reaction center, Molecular architecture of LHCII, Non-bilayer lipids and lipid phases, The 3D ultrastructure of thylakoid membranes and their flexibilty, Thermo-optic mechanism",
author = "Gyozo Garab",
year = "2016",
month = "1",
day = "1",
doi = "10.1007/s11120-015-0192-z",
language = "English",
volume = "127",
pages = "131--150",
journal = "Photosynthesis Research",
issn = "0166-8595",
publisher = "Springer Netherlands",
number = "1",

}

TY - JOUR

T1 - Self-assembly and structural-functional flexibility of oxygenic photosynthetic machineries

T2 - Personal perspectives

AU - Garab, Gyozo

PY - 2016/1/1

Y1 - 2016/1/1

N2 - This short review, with a bit of historical aspect and a strong personal bias and emphases on open questions, is focusing on the (macro-)organization and structural-functional flexibilities of the photosynthetic apparatus of oxygenic photosynthetic organisms at different levels of the structural complexity - selected problems that have attracted most my attention in the past years and decades. These include (i) the anisotropic organization of the pigment-protein complexes and photosynthetic membranes - a basic organizing principle of living matter, which can, and probably should be adopted to intelligent materials; (ii) the organization of protein complexes into chiral macrodomains, large self-assembling highly organized but structurally flexible entities with unique spectroscopic fingerprints - structures, where, important, high-level regulatory functions appear to 'reside'; (iii) a novel, dissipation-assisted mechanism of structural changes, based on a thermo-optic effect: ultrafast thermal transients in the close vicinity of dissipation of unused excitation energy, which is capable of inducing elementary structural changes; it makes plants capable of responding to excess excitation with reaction rates proportional to the overexcitation above the light-saturation of photosynthesis; (iv) the 3D ultrastructure of the granum-stroma thylakoid membrane assembly and other multilamellar membrane systems, and their remodelings - associated with regulatory mechanisms; (v) the molecular organization and structural-functional plasticity of the main light-harvesting complex of plants, in relation to their crystal structure and different in vivo and in vitro states; and (vi) the enigmatic role of non-bilayer lipids and lipid phases in the bilayer thylakoid membrane - warranting its high protein content and contributing to its structural flexibility.

AB - This short review, with a bit of historical aspect and a strong personal bias and emphases on open questions, is focusing on the (macro-)organization and structural-functional flexibilities of the photosynthetic apparatus of oxygenic photosynthetic organisms at different levels of the structural complexity - selected problems that have attracted most my attention in the past years and decades. These include (i) the anisotropic organization of the pigment-protein complexes and photosynthetic membranes - a basic organizing principle of living matter, which can, and probably should be adopted to intelligent materials; (ii) the organization of protein complexes into chiral macrodomains, large self-assembling highly organized but structurally flexible entities with unique spectroscopic fingerprints - structures, where, important, high-level regulatory functions appear to 'reside'; (iii) a novel, dissipation-assisted mechanism of structural changes, based on a thermo-optic effect: ultrafast thermal transients in the close vicinity of dissipation of unused excitation energy, which is capable of inducing elementary structural changes; it makes plants capable of responding to excess excitation with reaction rates proportional to the overexcitation above the light-saturation of photosynthesis; (iv) the 3D ultrastructure of the granum-stroma thylakoid membrane assembly and other multilamellar membrane systems, and their remodelings - associated with regulatory mechanisms; (v) the molecular organization and structural-functional plasticity of the main light-harvesting complex of plants, in relation to their crystal structure and different in vivo and in vitro states; and (vi) the enigmatic role of non-bilayer lipids and lipid phases in the bilayer thylakoid membrane - warranting its high protein content and contributing to its structural flexibility.

KW - Chlorophyll fluorescence transitions

KW - Conformational changes in photosystem II reaction center

KW - Molecular architecture of LHCII

KW - Non-bilayer lipids and lipid phases

KW - The 3D ultrastructure of thylakoid membranes and their flexibilty

KW - Thermo-optic mechanism

UR - http://www.scopus.com/inward/record.url?scp=84949214866&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84949214866&partnerID=8YFLogxK

U2 - 10.1007/s11120-015-0192-z

DO - 10.1007/s11120-015-0192-z

M3 - Article

C2 - 26494196

AN - SCOPUS:84949214866

VL - 127

SP - 131

EP - 150

JO - Photosynthesis Research

JF - Photosynthesis Research

SN - 0166-8595

IS - 1

ER -