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Crystallographic studies of low-light light harvesting complex II (LH2) from Rp. palustris
Reference
B11638
Principal Investigator / Supervisor
Dr Miroslav Papiz
Co-Investigators /
Co-Supervisors
Dr Anna Lawless
Institution
STFC - Laboratories
Department
Photon Science
Funding type
Research
Value (£)
82,748
Status
Completed
Type
Research Grant
Start date
01/11/1999
End date
01/11/2001
Duration
24 months
Abstract
The Low-Light (LL) LH2 complex from Rp. palustris is an integral membrane complex adapted to trapping solar energy at low intensities. The LL complex differs to HL in its absorption, CD and transient absorption spectra. The molecular weight is twice that of the known HL LH2 structures and has 20% more bacteriochlorophyll a pigments per peptide. Expression and purity of LL can be monitored by HPLC. We are able to fine-tune protocols to optimise crystallisation conditions. The determination of this novel LH2 structure will be important in establishing how these bacteria adapt to LL. In particular how the large changes at 850 nm are compatible with energy transfer to other complexes while fulfilling LL adaptation needs.
Summary
unavailable
Committee
Closed Committee - Biomolecular Sciences (BMS)
Research Topics
X – not assigned to a current Research Topic
Research Priority
X – Research Priority information not available
Research Initiative
X - not in an Initiative
Funding Scheme
X – not Funded via a specific Funding Scheme
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