Pigment or Organism Name:	Chlorophyll f (in methanol, Chen)
Type:	biological pigment
Medium Type:	in vitro
Description:	In vitro absorbance spectrum of chlorophyll f in methanol


x-axis label:	wavelength
x-axis units:	nm
y-axis label:	absorbance
y-axis units:	relative
error label:	nil
error units:	nil


Source/Contact:	Min Chen, University of Sydney, personal communication, 23 November 2010.

Reference:	Chen, M., Schliep, M., Willows, R.D., Cai, Z.-L., Neilan, B.A. and Scheer, H. (2010). A red-shifted chlorophyll, Science 329: 1318-1319.
		Chen, M. and Blankenship, R.B. (2011). "Expanding the solar spectrum used by photosynthesis," Trends in Plant Science 16:427-431.
		Li Y, Scales N, Blankenship RE, Willows RD and Chen M (2012) Extinction coefficient for re-shifted chlorophylls: chlorophyll d and chlorophyll f, Biochim. Biophys. Acta  1817:1292-1298.

Comments:	
	Source for molecular image, and extracts from stromatolite, possibly a filamentous cyanobacterium. In vitro absorbance spectrum of chlorophyll f in methanol, peaks at 405-406 and 706-708 nm.  Proposed formula is that Chl f is [2-formyl]-Chl a.  Absorbance spectrum is shifted up by 110 from original data to correct for negative values from filter effects.
	Molecular formula:  C55H70O6N4Mg
	Chlf_Chen_2010_molec.jpg


Keywords:	chlorophyll f, cyanobacteria, stromatolite, Australia

Datafile name:	Chlf_methanol_Chen_spec.csv