Abstract
The use of photochemical reaction centers to convert light energy into chemical energy, chlorophototrophy, occurs in organisms belonging to only five eubacterial phyla: Cyanobacteria, Proteobacteria, Chlorobi, Chloroflexi, and Firmicutes. All chlorophototrophs synthesize two types of pigments: (a) chlorophylls and bacteriochlorophylls, which function in both light harvesting and uniquely in photochemistry; and (b) carotenoids, which function primarily as photoprotective pigments but can also participate in light harvesting. Although hundreds of carotenoids have been identified, only 12 types of chlorophylls (Chl a, b, d; divinyl-Chl a and b; and 81-hydroxy-Chl a) and bacteriochlorophylls (BChl a, b, c, d, e, and g) are currently known to occur in bacteria. This review summarizes recent progress in the identification of genes and enzymes in the biosynthetic pathways leading to Chls and BChls, the essential tetrapyrrole cofactors of photosynthesis, and addresses the mechanisms for generating functional diversity for solar energy capture and conversion in chlorophototrophs.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 113-129 |
| Number of pages | 17 |
| Journal | Annual Review of Microbiology |
| Volume | 61 |
| DOIs | |
| State | Published - Nov 14 2007 |
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All Science Journal Classification (ASJC) codes
- Microbiology
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Chlorophyll biosynthesis in bacteria : The origins of structural and functional diversity. / Chew, Aline Gomez Maqueo; Bryant, Donald Ashley.
In: Annual Review of Microbiology, Vol. 61, 14.11.2007, p. 113-129.Research output: Contribution to journal › Review article
TY - JOUR
T1 - Chlorophyll biosynthesis in bacteria
T2 - The origins of structural and functional diversity
AU - Chew, Aline Gomez Maqueo
AU - Bryant, Donald Ashley
PY - 2007/11/14
Y1 - 2007/11/14
N2 - The use of photochemical reaction centers to convert light energy into chemical energy, chlorophototrophy, occurs in organisms belonging to only five eubacterial phyla: Cyanobacteria, Proteobacteria, Chlorobi, Chloroflexi, and Firmicutes. All chlorophototrophs synthesize two types of pigments: (a) chlorophylls and bacteriochlorophylls, which function in both light harvesting and uniquely in photochemistry; and (b) carotenoids, which function primarily as photoprotective pigments but can also participate in light harvesting. Although hundreds of carotenoids have been identified, only 12 types of chlorophylls (Chl a, b, d; divinyl-Chl a and b; and 81-hydroxy-Chl a) and bacteriochlorophylls (BChl a, b, c, d, e, and g) are currently known to occur in bacteria. This review summarizes recent progress in the identification of genes and enzymes in the biosynthetic pathways leading to Chls and BChls, the essential tetrapyrrole cofactors of photosynthesis, and addresses the mechanisms for generating functional diversity for solar energy capture and conversion in chlorophototrophs.
AB - The use of photochemical reaction centers to convert light energy into chemical energy, chlorophototrophy, occurs in organisms belonging to only five eubacterial phyla: Cyanobacteria, Proteobacteria, Chlorobi, Chloroflexi, and Firmicutes. All chlorophototrophs synthesize two types of pigments: (a) chlorophylls and bacteriochlorophylls, which function in both light harvesting and uniquely in photochemistry; and (b) carotenoids, which function primarily as photoprotective pigments but can also participate in light harvesting. Although hundreds of carotenoids have been identified, only 12 types of chlorophylls (Chl a, b, d; divinyl-Chl a and b; and 81-hydroxy-Chl a) and bacteriochlorophylls (BChl a, b, c, d, e, and g) are currently known to occur in bacteria. This review summarizes recent progress in the identification of genes and enzymes in the biosynthetic pathways leading to Chls and BChls, the essential tetrapyrrole cofactors of photosynthesis, and addresses the mechanisms for generating functional diversity for solar energy capture and conversion in chlorophototrophs.
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UR - http://www.scopus.com/inward/citedby.url?scp=34548512297&partnerID=8YFLogxK
U2 - 10.1146/annurev.micro.61.080706.093242
DO - 10.1146/annurev.micro.61.080706.093242
M3 - Review article
VL - 61
SP - 113
EP - 129
JO - Annual Review of Microbiology
JF - Annual Review of Microbiology
SN - 0066-4227
ER -