This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Maize like all other plants lacks a germ line. Late in the life cycle a small number of vegetative stem cells present in flowers differentiate as pre-germinal cells;these cells undergo meiosis to produce haploid spores, which divide by mitosis to form the haploid phase of the life cycle. Given this life cycle, DNA damage that occurs in the vegetative cells could be transmitted to the progeny if it is not repaired;other forms of cellular damage to proteins, RNA, or lipids could compromise plant growth and reproduction if not repaired as well. To understand how integrity of the genome is maintained and how maize responds to continuous damage, two DNA mutagens are employed: UV-B radiation, a natural component of sunlight, and MuDR/Mu DNA transposons. Transcriptome profiling and proteomics are being used to discover the range of acclimation responses to these agents in various somatic and reproductive tissues. Two-dimensional separation (by isoelectric point and by size) is used to fractionate the major proteins of treated and control tissues, providing data on ~3000 resolved protein types. The proteins are classified as unchanged, increased or decreased by specific treatments, and the proteins showing consistent alterations are recovered for identification. All of the protein identification is conducted in collaboration with the UCSF Mass Spectrometry Facility;to date, about 150 proteins have been identified by mass fingerprinting and sequencing. Among these proteins are a number predicted from the transcriptome profiling as well as proteins not previously implicated in responses to either UV-B or transposon-induced genomic damage. The combination of transcriptome profiling and proteomics data are used to determine which signal transduction pathways and cellular processes are involved;verification experiments include genetic analysis of mutants in key processes identified, i.e. by demonstrating that mutants show increased UV-B sensitivity. Current work focuses on elucidating post-translational modifications of proteins that were not altered in abundance by the treatments, followed by identification by mass spectrometry. These studies will likely highlight the most rapid responses to the treatments.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
2P41RR001614-28
Application #
8169749
Study Section
Special Emphasis Panel (ZRG1-BCMB-M (40))
Project Start
2010-09-12
Project End
2011-05-31
Budget Start
2010-09-12
Budget End
2011-05-31
Support Year
28
Fiscal Year
2010
Total Cost
$1,766
Indirect Cost
Name
University of California San Francisco
Department
Pharmacology
Type
Schools of Pharmacy
DUNS #
094878337
City
San Francisco
State
CA
Country
United States
Zip Code
94143
MacRae, Andrew J; Mayerle, Megan; Hrabeta-Robinson, Eva et al. (2018) Prp8 positioning of U5 snRNA is linked to 5' splice site recognition. RNA 24:769-777
Katsuno, Yoko; Qin, Jian; Oses-Prieto, Juan et al. (2018) Arginine methylation of SMAD7 by PRMT1 in TGF-?-induced epithelial-mesenchymal transition and epithelial stem-cell generation. J Biol Chem 293:13059-13072
Sahoo, Pabitra K; Smith, Deanna S; Perrone-Bizzozero, Nora et al. (2018) Axonal mRNA transport and translation at a glance. J Cell Sci 131:
Tran, Vy M; Wade, Anna; McKinney, Andrew et al. (2017) Heparan Sulfate Glycosaminoglycans in Glioblastoma Promote Tumor Invasion. Mol Cancer Res 15:1623-1633
Liu, Tzu-Yu; Huang, Hector H; Wheeler, Diamond et al. (2017) Time-Resolved Proteomics Extends Ribosome Profiling-Based Measurements of Protein Synthesis Dynamics. Cell Syst 4:636-644.e9
Cil, Onur; Phuan, Puay-Wah; Lee, Sujin et al. (2016) CFTR activator increases intestinal fluid secretion and normalizes stool output in a mouse model of constipation. Cell Mol Gastroenterol Hepatol 2:317-327
Posch, Christian; Sanlorenzo, Martina; Vujic, Igor et al. (2016) Phosphoproteomic Analyses of NRAS(G12) and NRAS(Q61) Mutant Melanocytes Reveal Increased CK2? Kinase Levels in NRAS(Q61) Mutant Cells. J Invest Dermatol 136:2041-2048
Julien, Olivier; Zhuang, Min; Wiita, Arun P et al. (2016) Quantitative MS-based enzymology of caspases reveals distinct protein substrate specificities, hierarchies, and cellular roles. Proc Natl Acad Sci U S A 113:E2001-10
Bongrand, Clotilde; Koch, Eric J; Moriano-Gutierrez, Silvia et al. (2016) A genomic comparison of 13 symbiotic Vibrio fischeri isolates from the perspective of their host source and colonization behavior. ISME J 10:2907-2917
Kintzer, Alexander F; Stroud, Robert M (2016) Structure, inhibition and regulation of two-pore channel TPC1 from Arabidopsis thaliana. Nature 531:258-62

Showing the most recent 10 out of 630 publications