Chlorophyll d

Chlorophyll d (Chl d) is a form of chlorophyll, identified by Harold Strain and Winston Manning in 1943.^[1] It was unambiguously identified in Acaryochloris marina in the 1990s.^[2] It is present in cyanobacteria which use energy captured from sunlight for photosynthesis.^[3] Chl d absorbs far-red light, at 710 nm wavelength, just outside the optical range.^[4] An organism that contains Chl d is adapted to an environment such as moderately deep water, where it can use far red light for photosynthesis,^[5] although there is not a lot of visible light.^[6]

Chlorophyll d

Identifiers
CAS Number	519-63-1 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:38199 Y
ChemSpider	16736116 N
PubChem CID	6449882 16070025
UNII	60L1FX1O1U Y
CompTox Dashboard (EPA)	DTXSID80894762
InChI InChI=1S/C54H71N4O6.Mg/c1-12-38-34(7)42-27-46-40(29-59)36(9)41(56-46)26-43-35(8)39(51(57-43)49-50(54(62)63-11)53(61)48-37(10)44(58-52(48)49)28-45(38)55-42)22-23-47(60)64-25-24-33(6)21-15-20-32(5)19-14-18-31(4)17-13-16-30(2)3;/h24,26-32,35,39,50H,12-23,25H2,1-11H3,(H-,55,56,57,58,59,61);/q-1;+2/p-1/b33-24+;/t31-,32-,35+,39+,50-;/m1./s1 Y Key: QXWRYZIMSXOOPY-SKHCYZARSA-M Y InChI=1S/C54H71N4O6.Mg/c1-12-38-34(7)42-27-46-40(29-59)36(9)41(56-46)26-43-35(8)39(51(57-43)49-50(54(62)63-11)53(61)48-37(10)44(58-52(48)49)28-45(38)55-42)22-23-47(60)64-25-24-33(6)21-15-20-32(5)19-14-18-31(4)17-13-16-30(2)3;/h24,26-32,35,39,50H,12-23,25H2,1-11H3,(H-,55,56,57,58,59,61);/q-1;+2/p-1/b33-24+;/t31-,32-,35+,39+,50-;/m1./s1
SMILES CC(C)CCC[C@@H](C)CCC[C@@H](C)CCCC(\C)=C\COC(=O)CC[C@H]6[C@H](C)C=5/C=C/2\N\1[Mg]n4c(\C=C\3/N=C(/C=C/1C(\C=O)=C\2\C)C(/C)=C/3/CC)c(C)c7c4\C(=C6/N=5)[C@@H](C(=O)OC)C7=O
Properties
Chemical formula	C54H70MgO6N4
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Chl d is produced from chlorophyllide d by chlorophyll synthase. Chlorophyllide d is made from chlorophyllide a, but the oxygen-using enzyme that performs this conversion remains unknown as of 2022.^[7]

Ball-and-stick model	Space-filling model

References

1. Manning WM, Strain HH (November 1943). "Chlorophyll d, a green pigment of red algae" (PDF). Journal of Biological Chemistry. 151 (1): 1–9. doi:10.1016/S0021-9258(18)72109-1.
2. Larkum AW, Kühl M (August 2005). "Chlorophyll d: the puzzle resolved" (PDF). Trends in Plant Science. 10 (8): 355–7. doi:10.1016/j.tplants.2005.06.005. PMID 16019251. Archived from the original (PDF) on 2012-03-13. Retrieved 2014-11-17.
3. "Photosynthetic Pigments". University of California Museum of Paleontology.
4. "Scientists discover first new chlorophyll in 60 years". PHYS ORG. August 20, 2010.
5. "Researchers decode genetics of chlorophyll d". News Medical Life Sciences. AZO Network.
6. "Chlorophyll d". Biology Online. 7 October 2019.
7. Tsuzuki, Yuki; Tsukatani, Yusuke; Yamakawa, Hisanori; Itoh, Shigeru; Fujita, Yuichi; Yamamoto, Haruki (29 March 2022). "Effects of Light and Oxygen on Chlorophyll d Biosynthesis in a Marine Cyanobacterium Acaryochloris marina". Plants. 11 (7): 915. doi:10.3390/plants11070915. PMC 9003380. PMID 35406896.