Common molecules sample 51005

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Empirical formula:	C₅₅H₇₆N₄O₆
Formula weight:	889.232 g/mole
Structural formula:	C₅₅H₇₆N₄O₆
Common name:	Bacteriopheophytin A
PDB entry #:	1qov
Short description:	Pheophytin is a chlorophyll derivative involved in photosynthesis.
Keyword:	porphyrin
Keyword:	chlorophyll
Miscellaneous comments:	Extracted from PDB file pdb1qov.ent occurs in 28 other PDB entries
Layman's explanation:	Pheophytin is essentially a chlorophyll molecule with two hydrogen atoms replacing the magnesium center. It can be synthesized through the acidification of chlorophyll, where the magnesium is pulled from the porphyrin ring and H+ ions attach to the open binding sites. The structure of pheophytin is much more stable than that of the chlorophyll due to this hydrogen ion interaction. As a result, pheophytin is a problem in laboratory situations because the chlorophyll will spontaneously transform into pheophytin in any acidic environment. The function of pheophytin is to carry excited electrons from photosystem II and dump them off at the plastoquinone Qa during photosynthesis. The pheophytin/chlorophyll interactions provide a source for a wide range of research in the areas of botany, biology, and plant physiology. The chemical structure is C55H72N4O6.
Lab name:	Common molecules
Sample provider:	Obtained from the Protein Data Bank
Status:	Complete, visible to public

Repository Files:
51005.crt	51005.gif	51005.ort	51005.pdb	51005.sdt