Gloeobacter
| Gloeobacter | |
|---|---|
| Scientific classification | |
| Domain: | Bacteria |
| Kingdom: | Bacillati |
| Phylum: | Cyanobacteriota |
| Class: | Cyanophyceae |
| Order: | Gloeobacterales |
| Family: | Komárek et Anagnostidis |
| Genus: | Rippka, Waterbury, & Cohen-Bazire, 1974 [validated 2013][1] |
| Type species | |
| Gloeobacter violaceus Rippka, Waterbury & Cohen-Bazire, 1974 [validated 2013]
| |
| Species | |
| |
Gloeobacter is a genus of cyanobacteria. It is the sister group to all other photosynthetic cyanobacteria.[2][3] Gloeobacter's order, Gloeobacterales, is unique among cyanobacteria in not having thylakoids, which are characteristic for all other cyanobacteria and chloroplasts. Instead, the light-harvesting complexes (also called phycobilisomes), that consist of different proteins, sit on the inside of the plasma membrane (among the cytoplasm). Subsequently, the proton gradient in Gloeobacter is created across the plasma membrane, whereas it forms across the thylakoid membrane in cyanobacteria and chloroplasts.[2]
The whole genome of G. violaceus (strain PCC 7421) and of G. kilaueensis have been sequenced. Many genes for photosystem I and II were found missing, likely related to the fact that photosynthesis in these bacteria does not take place in the thylakoid membrane as in other cyanobacteria, but in the plasma membrane.[4][5] There is also a genome for G. morelensis.
- ^ Komárek J, Kaštovský J, Mareš J, Johansen JR (2014). "Taxonomic classification of cyanoprokaryotes (cyanobacterial genera) 2014, using a polyphasic approach" (PDF). Preslia. 86: 295–335.
- ^ a b Antonia Herrero, Enrique Flores (2008). The Cyanobacteria: Molecular Biology, Genomics and Evolution. Horizon. p. 3. ISBN 978-1-904455-15-8.
- ^ Soo, Rochelle M.; Hemp, James; Hugenholtz, Philip (August 2019). "Evolution of photosynthesis and aerobic respiration in the cyanobacteria". Free Radical Biology and Medicine. 140: 200–205. doi:10.1016/j.freeradbiomed.2019.03.029. – describes the non-photosynthetic cyanobacteria obtained from metagenomics and classified into two classes by GTDB
- ^ Nakamura Y, Kaneko T, Sato S, et al. (2003). "Complete genome structure of Gloeobacter violaceus PCC 7421, a cyanobacterium that lacks thylakoids". DNA Res. 10 (4): 137–45. doi:10.1093/dnares/10.4.137. PMID 14621292.
- ^ Saw JH, Schatz M, Brown MV, Kunkel DD, Foster JS, Shick H, et al. (2013). "Cultivation and Complete Genome Sequencing of Gloeobacter kilaueensis sp. nov., from a Lava Cave in Kīlauea Caldera, Hawai'i". PLOS ONE. 8 (10): e76376. Bibcode:2013PLoSO...876376S. doi:10.1371/journal.pone.0076376. PMC 3806779. PMID 24194836.