We apologize for Proteopedia being slow to respond. For the past two years, a new implementation of Proteopedia has been being built. Soon, it will replace this 18-year old system. All existing content will be moved to the new system at a date that will be announced here.
Journal:Angew Chem Int Ed:1
From Proteopedia
(Difference between revisions)
| Line 1: | Line 1: | ||
<StructureSection load='' size='450' side='right' scene='underdevelopment' caption=''> | <StructureSection load='' size='450' side='right' scene='underdevelopment' caption=''> | ||
| - | === Fine tuning of | + | === Fine tuning of chlorophyll spectra by protein-induced ring deformation === |
| - | <big> | + | <big>Dominika Bednarczyk, Orly Dym, Vadivel Prabahar, and Dror Noy</big> <ref>REF</ref> |
<hr/> | <hr/> | ||
<b>Molecular Tour</b><br> | <b>Molecular Tour</b><br> | ||
| - | + | The ability to tune the light absorption properties of chlorophylls by their protein environment is the key to the high efficiency, robustness, and adaptability of photosynthetic light harvesting proteins. Unfortunately, the intricacy of the natural complexes makes it very difficult to identify and isolate specific protein-pigment interactions that underlie the spectral tuning mechanisms and to quantify their effect on a pigment’s spectral properties. Here we identify and demonstrate the tuning mechanism of chlorophyll spectra in type II water soluble chlorophyll binding proteins from Brassicaceae (WSCPs). By comparing the molecular structures of two natural WSCPs we correlate a shift in the chlorophyll red absorption band with deformation of its tetrapyrrole macrocycle that is induced by changing the position of a nearby tryptophan residue. We show by a set of reciprocal point mutations that this change accounts for up to 2/3 of the observed spectral shift between the two natural variants. | |
</StructureSection> | </StructureSection> | ||
<references/> | <references/> | ||
__NOEDITSECTION__ | __NOEDITSECTION__ | ||
Revision as of 09:07, 23 March 2016
| |||||||||||
- ↑ REF
This page complements a publication in scientific journals and is one of the Proteopedia's Interactive 3D Complement pages. For aditional details please see I3DC.
