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Publikationen - Molekulare Signalverarbeitung

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Publikation

Calderón Villalobos, L.I.; Nill, C.; Marrocco, K.; Kretsch, T.; Schwechheimer, C. The evolutionarily conserved Arabidopsis thaliana F-box protein AtFBP7 is required for efficient translation during temperature stress Gene 392(1-2), 106-116, (2007) DOI: 10.1016/j.gene.2006.11.016

In eukaryotes, E3 ubiquitin ligases (E3s) mediate the ubiquitylation of proteins that are destined for degradation by the ubiquitin-proteasome system. In SKP1/CDC53/F-box protein (SCF)-type E3 complexes, the interchangeable F-box protein confers specificity to the E3 ligase through direct physical interactions with the degradation substrate. The vast majority of the approximately 700 F-box proteins from the plant model organism Arabidopsis thaliana remain to be characterized. Here, we investigate the previously uncharacterized and evolutionarily conserved Arabidopsis F-box protein 7 (AtFBP7), which is encoded by a unique gene in Arabidopsis (At1g21760). Several apparent fbp7 loss-of-function alleles do not have an obvious phenotype. AtFBP7 is ubiquitously expressed and its expression is induced after cold and heat stress. When following up on a reported co-purification of the eukaryotic elongation factor-2 (eEF-2) with YLR097c, the apparent budding yeast orthologue of AtFBP7, we discovered a general defect in protein biosynthesis after cold and heat stress in fbp7 mutants. Thus, our findings suggest that AtFBP7 is required for protein synthesis during temperature stress.
Publikation

Biondi, E.; Branciamore, S.; Fusi, L.; Gago, S.; Gallori, E. Catalytic activity of hammerhead ribozymes in a clay mineral environment: Implications for the RNA world. Gene 389, 10-18, (2007) DOI: 10.1016/j.gene.2006.09.002

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Publikation

Schilling, S.; Stenzel, I.; von Bohlen, A.; Wermann, M.; Schulz, K.; Demuth, H.-U.; Wasternack, C. Isolation and characterization of the glutaminyl cyclases from Solanum tuberosum and Arabidopsis thaliana: implications for physiological functions Biol. Chem 388, 145-153, (2007) DOI: 10.1515/BC.2007.016

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Publikation

Kenton, P.; Mur, L.A.J.; Atzorn, R.; Wasternack, C.; Draper, J. (—)-Jasmonic Acid Accumulation in Tobacco Hypersensitive Response Lesions Mol. Plant Microbiol. Interactions 12, 74-78, (1999) DOI: 10.1094/MPMI.1999.12.1.74

Tobacco infected with Pseudomonas syringae pv. phaseolicola undergoes a hypersensitive response (HR). Jasmonic acid (JA) accumulated within the developing lesion 3 to 9 h after infection and this accumulation preceded protein loss, cell death, and malondialdehyde accumulation. Accumulating JA consisted largely of the (—)-JA stereoisomer and was essentially restricted to the HR lesion
Publikation

Kramell, R.; Miersch, O.; Schneider, G.; Wasternack, C. Liquid chromatography of jasmonic acid amine conjugates Chromatographia 49, 42-46, (1999)

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Publikation

Kramell, R.; Schneider, G.; Miersch, O. Chiral separation of amide conjugates of jasmonic acid by liquid chromatography Chromatographia 45, 104-108, (1997)

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