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Article

Photosynthetic electron transport in genetically altered photosystem II reaction centers of chloroplasts.

Proceedings of the National Academy of Sciences of the United States of America - 15 Oct 1991

Roffey R A, Golbeck J H, Hille C R, Sayre R T

Abstract excerpt

Using a cotransformation system to identify chloroplast transformants in Chlamydomonas reinhardtii, we converted histidine-195 of the photosystem II reaction center D1 protein to a tyrosine residue. The mutants were characterized by a reduced quantum efficiency for photosynthetic oxygen evolution, which varied in a pH-dependent manner, a reduced capacity to oxidize artificial donors to photosystem II, and P680+...

Topics

Animals
Chlamydomonas
Chloroplasts
DNA
Electron Spin Resonance Spectroscopy
Electron Transport
Genome
Kinetics
Light
Light-Harvesting Protein Complexes
Mutagenesis, Site-Directed

Methodology Data sources Editorial policy Privacy About Contact Helena Bioinformatics

Phenotype

Photosynthesis

Photosynthetic Reaction Center Complex Proteins

Photosystem II Protein Complex

Restriction Mapping

Source

Open in PubMed Open full text

Identifiers

PMID: 1656461
DOI: 10.1073/pnas.88.20.9122
PMCID: PMC52664

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 29 Aug 2026. Prepared record publication-1656461-2026-08-29.1. Manifest publication-graph-cohort-2026-08-29.1.

Source receipt: PubMed via Helena Literature Corpus, retrieved 29 Aug 2026.

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Photosynthetic electron transport in genetically altered photosystem II reaction centers of chloroplasts.PMID 1656461Read ↗

Two functionally distinct manganese clusters formed by introducing a mutation in the carboxyl terminus of a photosystem II reaction center polypeptide, D1, of the green alga Chlamydomonas reinhardtii.Semantic proximity Read ↗

Lumenal side histidine mutations in the D1 protein of Photosystem II affect donor side electron transfer in Chlamydomonas reinhardtii.Semantic proximity Read ↗

Characterization of chloroplast psbA transformants of Chlamydomonas reinhardtii with impaired processing of a precursor of a photosystem II reaction center protein, D1.Semantic proximity Read ↗

Requirement for Asn298 on D1 protein for oxygen evolution: analyses by exhaustive amino acid substitution in the green alga Chlamydomonas reinhardtii.Semantic proximity Read ↗

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Photosynthetic reaction center variants made via genetic code expansion show Tyr at M210 tunes the initial electron transfer mechanism.Semantic proximity Read ↗

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