Abstract
Gloeobacter violaceus, the earliest diverging oxyphotobacterium (cyanobacterium) on the 16S ribosomal RNA tree, has five copies of the photosystem II psbA gene encoding the D1 reaction center protein subunit. These copies are widely distributed throughout the 4.6 Mbp genome with only one copy colocalizing with other PSII subunits, in marked contrast to all other psbA genes in all publicly available sequenced genomes. A clustering of two other psb genes around psbA3 (glr2322) is unique to Gloeobacter. We provide experimental proof for the transcription of a psbA3DC operon, encoding three of the five reaction center core subunits (D1, D2, and CP43). This is the first example of a transcribed gene cluster containing the D1/D2 or D1/D2/CP43 subunits of PSII in an oxygenic phototroph (prokaryotic or eukaryotic). Implications for the evolution of oxygenic photosynthesis are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 35-38 |
| Number of pages | 4 |
| Journal | Molecular Biology and Evolution |
| Volume | 29 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2012 |
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Keywords
- Gloeobacter violaceus
- Photosystem II
- Type 2 reaction center
ASJC Scopus subject areas
- Genetics
- Molecular Biology
- Ecology, Evolution, Behavior and Systematics
Cite this
Identification of an oxygenic reaction center psbadc operon in the cyanobacterium gloeobacter violaceus PCC 7421. / Nguyen, Tuan A.; Brescic, Jasmina; Vinyard, David J.; Chandrasekar, Thenappan; Dismukes, G Charles.
In: Molecular Biology and Evolution, Vol. 29, No. 1, 01.2012, p. 35-38.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Identification of an oxygenic reaction center psbadc operon in the cyanobacterium gloeobacter violaceus PCC 7421
AU - Nguyen, Tuan A.
AU - Brescic, Jasmina
AU - Vinyard, David J.
AU - Chandrasekar, Thenappan
AU - Dismukes, G Charles
PY - 2012/1
Y1 - 2012/1
N2 - Gloeobacter violaceus, the earliest diverging oxyphotobacterium (cyanobacterium) on the 16S ribosomal RNA tree, has five copies of the photosystem II psbA gene encoding the D1 reaction center protein subunit. These copies are widely distributed throughout the 4.6 Mbp genome with only one copy colocalizing with other PSII subunits, in marked contrast to all other psbA genes in all publicly available sequenced genomes. A clustering of two other psb genes around psbA3 (glr2322) is unique to Gloeobacter. We provide experimental proof for the transcription of a psbA3DC operon, encoding three of the five reaction center core subunits (D1, D2, and CP43). This is the first example of a transcribed gene cluster containing the D1/D2 or D1/D2/CP43 subunits of PSII in an oxygenic phototroph (prokaryotic or eukaryotic). Implications for the evolution of oxygenic photosynthesis are discussed.
AB - Gloeobacter violaceus, the earliest diverging oxyphotobacterium (cyanobacterium) on the 16S ribosomal RNA tree, has five copies of the photosystem II psbA gene encoding the D1 reaction center protein subunit. These copies are widely distributed throughout the 4.6 Mbp genome with only one copy colocalizing with other PSII subunits, in marked contrast to all other psbA genes in all publicly available sequenced genomes. A clustering of two other psb genes around psbA3 (glr2322) is unique to Gloeobacter. We provide experimental proof for the transcription of a psbA3DC operon, encoding three of the five reaction center core subunits (D1, D2, and CP43). This is the first example of a transcribed gene cluster containing the D1/D2 or D1/D2/CP43 subunits of PSII in an oxygenic phototroph (prokaryotic or eukaryotic). Implications for the evolution of oxygenic photosynthesis are discussed.
KW - Gloeobacter violaceus
KW - Photosystem II
KW - Type 2 reaction center
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UR - http://www.scopus.com/inward/citedby.url?scp=84862843509&partnerID=8YFLogxK
U2 - 10.1093/molbev/msr224
DO - 10.1093/molbev/msr224
M3 - Article
C2 - 21903678
AN - SCOPUS:84862843509
VL - 29
SP - 35
EP - 38
JO - Molecular Biology and Evolution
JF - Molecular Biology and Evolution
SN - 0737-4038
IS - 1
ER -