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Comparison of dilute acid and ionic liquid pretreatment of switchgrass: Biomass recalcitrance, delignification and enzymatic saccharification.
The PSI-H subunit of photosystem I is essential for state transitions in plant photosynthesis
- C. Lunde, P. Jensen, A. Haldrup, J. Knoetzel, H. Scheller
- Environmental ScienceNature
- 30 November 2000
It is shown that in the absence of a specific PSI subunit, PSI-H, LHCII cannot transfer energy to PSI, and state transitions are impaired.
The Selaginella Genome Identifies Genetic Changes Associated with the Evolution of Vascular Plants
The genome sequence of the lycophyte Selaginella moellendorffii (Selaginella), the first nonseed vascular plant genome reported, is reported, finding that the transition from a gametophytes- to a sporophyte-dominated life cycle required far fewer new genes than the Transition from a non Seed vascular to a flowering plant.
ARABINAN DEFICIENT 1 Is a Putative Arabinosyltransferase Involved in Biosynthesis of Pectic Arabinan in Arabidopsis1[W]
- Jesper Harholt, J. Jensen, S. Sørensen, C. Orfila, M. Pauly, H. Scheller
- BiologyPlant Physiology
- 23 December 2005
Analysis of mutant lines with T-DNA insertion in the ARABINAN DEFICIENT 1 gene suggested that ARAD1 is an arabinan α-1,5-arabinosyltransferase, a putative glycosyl transferase of type 2 membrane protein with a signal anchor in Arabidopsis.
Biosynthesis of pectin
Biochemical methods successfully led to the recent identification of a pectin biosynthetic galacturonosyltransferase (GAUT1), and recent functional genomics and mutant studies have allowed the identification of several biosynthetics enzymes involved in making different parts of pectIn several other cases, enzymes have been identified as involved inMaking pect in but because of ambiguity in the cell wall compositions of mutants and lack of direct biochemical evidence their specific activities are more uncertain.
Balance of power: a view of the mechanism of photosynthetic state transitions.
Photoinhibition of photosystem I
Recently, the structure of PSI isolated from pea was solved by X-ray crystallography at a resolution of 4.4 A, which highlighted the structural similarities and differences between plant PSI and cyanobacterial PSI.
Arabidopsis CHL27, located in both envelope and thylakoid membranes, is required for the synthesis of protochlorophyllide
- S. Tottey, M. Block, P. Jensen
- Environmental ScienceProceedings of the National Academy of Sciences…
- 12 December 2003
Fractionation of Arabidopsis chloroplast membranes shows that Crd1/CHL27 is equally distributed on a membrane-weight basis in the thylakoid and inner-envelope membranes.
The PSI-K Subunit of Photosystem I Is Involved in the Interaction between Light-harvesting Complex I and the Photosystem I Reaction Center Core*
- P. Jensen, M. Gilpin, J. Knoetzel, H. Scheller
- Environmental ScienceThe Journal of Biological Chemistry
- 11 August 2000
The observed effects demonstrate that PSI-K has a role in organizing the peripheral light-harvesting complexes on the core antenna of photosystem I and reduces the redistribution of absorbed excitation energy between the two photosystems.