This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. Ferritins are a broad superfamily of iron storage and detoxifying proteins found in plants, mammals and many microorganisms. A novel ferritin was found in marine pennate diatoms, unicellular photosynthetic organisms that play a major role in global primary production and carbon sequestration in the deep ocean. Crystal structures of ferritin derived from the pennate diatom Pseudo-nitzschia multiseries (PmFTN) revealed the characteristic ferritin ferroxidase centres, monomeric fold and spherical assembly. Three metal sites (A, B, C) were identified from iron(II) and zinc(II) crystal soaking experiments and anomalous dispersion data. The observed iron and zinc atoms form a pathway leading towards the central cavity where the stored iron mineral is formed. Metal coordinating residues are hypothesized to gate the passage of iron from the ferroxidase site to nucleate the mineral core. We will determine crystal structures of variants of metal coordinating amino acids in the presence of iron(II) and to gain further insights into the iron storage mechanism of PmFTN.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
5P41RR001209-32
Application #
8362419
Study Section
Special Emphasis Panel (ZRG1-BCMB-P (40))
Project Start
2011-03-01
Project End
2012-02-29
Budget Start
2011-03-01
Budget End
2012-02-29
Support Year
32
Fiscal Year
2011
Total Cost
$559
Indirect Cost
Name
Stanford University
Department
Chemistry
Type
Schools of Arts and Sciences
DUNS #
009214214
City
Stanford
State
CA
Country
United States
Zip Code
94305
Vickers, Chelsea; Liu, Feng; Abe, Kento et al. (2018) Endo-fucoidan hydrolases from glycoside hydrolase family 107 (GH107) display structural and mechanistic similarities to ?-l-fucosidases from GH29. J Biol Chem 293:18296-18308
Nguyen, Phong T; Lai, Jeffrey Y; Lee, Allen T et al. (2018) Noncanonical role for the binding protein in substrate uptake by the MetNI methionine ATP Binding Cassette (ABC) transporter. Proc Natl Acad Sci U S A 115:E10596-E10604
Aleman, Fernando; Tzarum, Netanel; Kong, Leopold et al. (2018) Immunogenetic and structural analysis of a class of HCV broadly neutralizing antibodies and their precursors. Proc Natl Acad Sci U S A 115:7569-7574
Herrera, Nadia; Maksaev, Grigory; Haswell, Elizabeth S et al. (2018) Elucidating a role for the cytoplasmic domain in the Mycobacterium tuberculosis mechanosensitive channel of large conductance. Sci Rep 8:14566
Lal, Neeraj K; Nagalakshmi, Ugrappa; Hurlburt, Nicholas K et al. (2018) The Receptor-like Cytoplasmic Kinase BIK1 Localizes to the Nucleus and Regulates Defense Hormone Expression during Plant Innate Immunity. Cell Host Microbe 23:485-497.e5
Pluvinage, Benjamin; Grondin, Julie M; Amundsen, Carolyn et al. (2018) Molecular basis of an agarose metabolic pathway acquired by a human intestinal symbiont. Nat Commun 9:1043
Beyerlein, Kenneth R; Jönsson, H Olof; Alonso-Mori, Roberto et al. (2018) Ultrafast nonthermal heating of water initiated by an X-ray Free-Electron Laser. Proc Natl Acad Sci U S A 115:5652-5657
Yoshizawa, Takuya; Ali, Rustam; Jiou, Jenny et al. (2018) Nuclear Import Receptor Inhibits Phase Separation of FUS through Binding to Multiple Sites. Cell 173:693-705.e22
Dods, Robert; Båth, Petra; Arnlund, David et al. (2017) From Macrocrystals to Microcrystals: A Strategy for Membrane Protein Serial Crystallography. Structure 25:1461-1468.e2
de Vries, Robert P; Tzarum, Netanel; Peng, Wenjie et al. (2017) A single mutation in Taiwanese H6N1 influenza hemagglutinin switches binding to human-type receptors. EMBO Mol Med 9:1314-1325

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