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Evidence for nucleotide‐dependent processes in the thylakoid lumen of plant chloroplasts – an update
Author(s) -
Spetea Cornelia,
Lundin Björn
Publication year - 2012
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/j.febslet.2012.07.005
Subject(s) - thylakoid , chloroplast , nucleotide , chemistry , biophysics , biochemistry , biology , microbiology and biotechnology , gene
The thylakoid lumen is an aqueous chloroplast compartment enclosed by the thylakoid membrane network. Bioinformatic and proteomic studies indicated the existence of 80–90 thylakoid lumenal proteins in Arabidopsis thaliana , having photosynthetic, non‐photosynthetic or unclassified functions. None of the identified lumenal proteins had canonical nucleotide‐binding motifs. It was therefore suggested that, in contrast to the chloroplast stroma harboring nucleotide‐dependent enzymes and other proteins, the thylakoid lumen is a nucleotide‐free compartment. Based on recent findings, we provide here an updated view about the presence of nucleotides in the thylakoid lumen of plant chloroplasts, and their role in function and dynamics of photosynthetic complexes.