| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 2050158 | FEBS Letters | 2007 | 4 Pages |
Abstract
Substituent-dependent demetalation kinetics of natural bacteriochlorophyll (BChl) c and e homologs purified from two green sulfur photosynthetic bacteria was first studied. Separated BChl e homologs, which possessed a formyl group at the 7-position of their chlorin macrocycles, exhibited a significantly slow removal of central magnesium to free-base bacteriopheophytins in acidic aqueous acetone compared with the corresponding BChl c homologs, which possessed a methyl group at the 7-position. Additional methyl groups at the 82-position of both BChl c and e molecules had little effect on the demetalation kinetics.
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Authors
Yoshitaka Saga, Yuki Hirai, Hitoshi Tamiaki,