Department of Molecular Biology and Microbial Food Safety, University of Amsterdam, Amsterdam 1098 XH, The Netherlands ABSTRACT: The resistance properties of the bacterial spores are partially due to spore surface proteins, similar to 30% of which are said to form an insoluble protein fraction. Identification of Native Cross-Links in Bacillus subtilis Spore Coat Proteins Journal of Proteome Research. The extra space between two basal cylinders and PSII provides increased accessibility for regulatory elements, e.g., orange carotenoid protein, which are required for modulating photochemical activity.

The uneven bottom surface of the PBS core contrasts with the flat reducing side of PSII. Our model reveals a side-view crossover configuration of the two basal cylinders, consolidating the essential roles of the anchoring domains composed of the ApcE PB loop and ApcD, which facilitate the energy transfer to PSII and PSI, respectively. Here, we have combined chemical cross-linking mass spectrometry with homology modeling to propose a tricylindrical cyanobacterial PBS core structure. The PBS has several peripheral rods and a central core that binds to the thylakoid membrane, allowing energy coupling with photosystem II (PSII) and PSI. Louis, MO 63130, USA ABSTRACT: In cyanobacteria and red algae, the structural basis dictating efficient excitation energy transfer from the phycobilisome (PBS) antenna complex to the reaction centers remains unclear. Department of Chemistry, Washington University in St. Structure of cyanobacterial phycobilisome core revealed by structural modeling and chemical cross-linking Science Advances.

How do i use tsearch on spore