Abstract:
:The C1q-tumor necrosis factor 5 (C1QTNF5) protein plays a significant role in retinal pigmented epithelium (RPE) cellular adhesion. The C1QTNF5 gene is co-transcribed with the frizzled-related protein (MFRP) gene. A Ser-to-Arg mutation at site 163 (S163R) in C1QTNF5 is known to cause late-onset retinal macular degeneration (L-ORMD). Here we also found that C1QTNF5 monomers can multimerize into a bouquet-like octadecamer. We found that a novel intermolecular hydrogen-bond network of S163 that glues adjacent globular heads of C1QTNF5 together was weakened or abolished by the R163 pathogenic mutation. These findings could underlie the structural basis of this protein's adhesive function and relate to the pathogenesis of its S163R mutation. Additionally, the fact that C1QTNF5 immobilized to a resin selectively enriched detergent extracted membrane-bound MFRP, further confirmed their interaction, implying functions other than cellular adhesion for C1QTNF5.
journal_name
J Struct Bioljournal_title
Journal of structural biologyauthors
Tu X,Palczewski Kdoi
10.1016/j.jsb.2014.02.001subject
Has Abstractpub_date
2014-04-01 00:00:00pages
86-94issue
1eissn
1047-8477issn
1095-8657pii
S1047-8477(14)00025-2journal_volume
186pub_type
杂志文章abstract::Bdelloid rotifers are aquatic microinvertebrates able to cope with the loss of environmental water by entering dormancy, and are thus capable of living in temporary habitats. When water is evaporating, bdelloids contract into "tuns", silence metabolism and lose water from the body, a condition known as anhydrobiosis. ...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2010.04.003
更新日期:2010-07-01 00:00:00
abstract::Alpha-helical bundles and beta-barrel proteins represent the two basic types of architecture known for integral membrane proteins. Irregular structural motifs have been revealed with the growing number of structures determined. "Discontinuous" helices are present in membrane proteins that actively transport ions. In t...
journal_title:Journal of structural biology
pub_type: 杂志文章,评审
doi:10.1016/j.jsb.2007.01.011
更新日期:2007-08-01 00:00:00
abstract::The ability to convert into amyloid fibrils is a common feature of prion proteins. However, not all amyloid-forming proteins act as prions. Here, we compared two homologs of the yeast prion protein Ure2 from Saccharomyces cerevisiae and Saccharomyces paradoxus, ScUre2p and SpUre2p, which have different prion propensit...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2011.03.008
更新日期:2011-06-01 00:00:00
abstract::In situ hybridization (ISH) is a widely applied technique used for visualizing specific nucleic acid sequences at chromosomal, cytologic, and histologic levels. It sometimes fails, however, to demonstrate precise cell identity, early stages of gene expression and variants of alternative splicing because of its limited...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2005.09.010
更新日期:2006-01-01 00:00:00
abstract::3,4-dihydroxy 2-butanone 4-phosphate synthase (DHBPS) and GTP cyclohydrolase-II (GTPCH-II) are the two initial enzymes involved in riboflavin biosynthesis pathway, which has been shown to be essential for the pathogens. In Mycobacterium tuberculosis (Mtb), the ribA2 gene (Rv1415) encodes for the bi-functional enzyme w...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2011.01.013
更新日期:2011-05-01 00:00:00
abstract::DivIVA or Wag31, which is an essential pole organizing protein in mycobacteria, can self-assemble at the negatively curved side of the membrane at the growing pole to form a higher order structural scaffold for maintaining cellular morphology and localizing various target proteins for cell-wall biogenesis. The structu...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2019.107429
更新日期:2020-02-01 00:00:00
abstract::As a long-term goal we want to use cryoelectron tomography to understand how non-enveloped viruses, such as picornaviruses, enter cells and translocate their genomes across membranes. To this end, we developed new image-processing tools using an in vitro system to model viral interactions with membranes. The complex o...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2007.08.009
更新日期:2007-11-01 00:00:00
abstract::We report a detailed work of composition and location of naturally formed iron biominerals in plant cells tissues grown in iron rich environments as Imperata cylindrica. This perennial grass grows on the Tinto River banks (Iberian Pyritic Belt) in an extreme acidic ecosystem (pH∼2.3) with high concentration of dissolv...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2015.11.005
更新日期:2016-01-01 00:00:00
abstract::Ferritin, the major iron storage protein, has dual functions; it sequesters redox activity of intracellular iron and facilitates iron turn-over. Here we present high angle annular dark field (HAADF) images from individual hepatic ferritin cores within tissue sections, these images were obtained using spherical aberrat...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2008.12.001
更新日期:2009-04-01 00:00:00
abstract::Lipocalin-type prostaglandin D synthase (L-PGDS) acts as both a PGD(2) synthase and an extracellular transporter for small lipophilic molecules. From a series of biochemical studies, it has been found that L-PGDS has an ability to bind a variety of lipophilic ligands such as biliverdin, bilirubin and retinoids in vitr...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2009.10.005
更新日期:2010-02-01 00:00:00
abstract::Calnexin is a molecular chaperone that facilitates folding of glycoproteins in the endoplasmic reticulum (ER). The cloned lumenal domain of canine calnexin, cnxDeltaTMC, retains its biological activity without the transmembrane and cytosolic region. For the purpose of structure determination we generated a crystalliza...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1006/jsbi.1998.4032
更新日期:1998-11-01 00:00:00
abstract::Bacterial two-component regulatory systems (TCS) play important roles in sensing environmental stimuli and responding to them by regulating gene expression. VbrK/VbrR, a TCS in Vibrio parahaemolyticus, confers resistance to β-lactam antibiotics through activating a β-lactamase gene. Its periplasmic sensor domain was p...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2020.107610
更新日期:2020-11-01 00:00:00
abstract::Random spherically constrained (RSC) single particle reconstruction is a method to obtain structures of membrane proteins embedded in lipid vesicles (liposomes). As in all single-particle cryo-EM methods, structure determination is greatly aided by reliable detection of protein "particles" in micrographs. After fittin...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2014.01.004
更新日期:2014-03-01 00:00:00
abstract::Low complexity regions (LCRs) in protein sequences have special properties that are very different from those of globular proteins. The rules that define secondary structure elements do not apply when the distribution of amino acids becomes biased. While there is a tendency towards structural disorder in LCRs, various...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2019.08.003
更新日期:2019-11-01 00:00:00
abstract::We describe here a set of procedures and algorithms that may be used as an aid in determining the indexing rule of a helical specimen. Crystallizing macromolecules into helical arrays has the potential to speed up and simplify the process of three-dimensional reconstruction of the macromolecular structure. The process...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2003.10.008
更新日期:2003-10-01 00:00:00
abstract::Cryogenic electron microscopy (cryo-EM) and single-particle analysis enables determination of near-atomic resolution structures of biological molecules. However, large computational requirements limit throughput and rapid testing of new image processing tools. We developed PRIME, an algorithm part of the SIMPLE softwa...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2018.08.005
更新日期:2018-11-01 00:00:00
abstract::Electron tomography allows structural studies of cellular structures at molecular detail. Large 3D reconstructions are needed to meet the resolution requirements. The processing time to compute these large volumes may be considerable and so, high performance computing techniques have been used traditionally. This work...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2010.01.008
更新日期:2010-06-01 00:00:00
abstract::A topological localization of epitopes on the surface of the Aa6 subunit of Androctonus australis hemocyanin has been carried out. First, immunocomplex strings composed of native hemocyanin and monoclonal antibodies were examined in the electron microscope and submitted to an image processing by correspondence analysi...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/1047-8477(90)90087-s
更新日期:1990-03-01 00:00:00
abstract::We have used three different electron microscopy approaches to calculate three-dimensional maps of tubulin assemblies decorated with the motor domain of kinesin. The approaches used were: (1) Tilt series reconstruction of negatively stained tubulin sheets. (2) Back-projection reconstruction of microtubules in ice. (3)...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1006/jsbi.1997.3851
更新日期:1997-03-01 00:00:00
abstract::The carboxy-terminal region of the KCNH family of potassium channels contains a cyclic-nucleotide binding homology domain (CNBHD) that is important for channel gating and trafficking. The solution structure of the CNBHD of the KCNH potassium of zebrafish was determined using solution NMR spectroscopy. This domain exis...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2014.03.008
更新日期:2014-04-01 00:00:00
abstract::While most bacteria possess a single gene encoding the bifunctional DNA glycosylase Endonuclease III (EndoIII) in their genomes, Deinococcus radiodurans possesses three: DR2438 (DrEndoIII1), DR0289 (DrEndoIII2) and DR0982 (DrEndoIII3). Here we have determined the crystal structures of DrEndoIII1 and an N-terminally tr...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2015.05.009
更新日期:2015-08-01 00:00:00
abstract::Ion-abrasion scanning electron microscopy (IASEM) takes advantage of focused ion beams to abrade thin sections from the surface of bulk specimens, coupled with SEM to image the surface of each section, enabling 3D reconstructions of subcellular architecture at approximately 30nm resolution. Here, we report the first a...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2009.02.014
更新日期:2009-06-01 00:00:00
abstract::Over recent years advances in cryo-electron microscopy for the study of macromolecular structure have resulted in resolutions in the range 10-15 A becoming routine. With this drive for increased resolution comes the need to collect larger datasets, commonly >10,000 particle images. Manual selection of particles from m...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2003.10.024
更新日期:2004-01-01 00:00:00
abstract::The crystal structure of the N-terminal domain of the RNA polymerase δ subunit (Nδ) from Bacillus subtilis solved at a resolution of 2.0Å is compared with the NMR structure determined previously. The molecule crystallizes in the space group C222(1) with a dimer in the asymmetric unit. Importantly, the X-ray structure ...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2014.06.001
更新日期:2014-08-01 00:00:00
abstract::Cryo-electron microscopy (cryo-EM) of frozen-hydrated preparations of isolated macromolecular complexes is the method of choice to obtain the structure of complexes that cannot be easily studied by other experimental methods due to their flexibility or large size. An increasing number of macromolecular structures are ...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2016.04.007
更新日期:2016-06-01 00:00:00
abstract::Small-angle neutron scattering and contrast variation were used to study the solution structure of GroEL and GroEL/GroES chaperonins complexed with a nonnative variant of the polypeptide substrate, subtilisin (PJ9). The subtilisin was 86% deuterated (dPJ9) so that it contrasted sufficiently with the chaperonin, allowi...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/s1047-8477(03)00002-9
更新日期:2003-03-01 00:00:00
abstract::The baculum is an extraskeletal bone located in the penis of a few species in several orders of mammals such as carnivores, insectivores, rodents, bats and primates. This study aims to describe the structure, architecture and mechanical properties of the canine baculum. To this end canine bacula from castrated and unc...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2011.06.006
更新日期:2011-09-01 00:00:00
abstract::Single crystals of UDP-N-acetylglucosamine enolpyruvyltransferase of Enterobacter cloacae have been grown by vapor diffusion using phosphate buffer as the precipitant. The crystals belong to the monoclinic space group C2 with a = 86.9 A, b = 155.9 A, c = 83.8 A, beta = 91.6 degrees. Assuming two monomers per asymmetri...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1006/jsbi.1996.0071
更新日期:1996-07-01 00:00:00
abstract::Three-dimensional (3D) electron microscopy (EM) has become a major player in structural cell biology as it enables the analysis of subcellular architecture at an unprecedented level of detail. Interpretation of the resulting 3D volumes strongly depends on segmentation, which consists in decomposing the volume into the...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2012.10.002
更新日期:2013-01-01 00:00:00
abstract::The phycobilisome photosynthetic antenna complex, found in cyanobacteria and red-algae, interacts with proteins expressed specifically to deal with different forms of physiological stress. Under conditions of nutrient starvation, the NblA protein is required for the process that leads to phycobilisome degradation and ...
journal_title:Journal of structural biology
pub_type: 杂志文章
doi:10.1016/j.jsb.2006.10.021
更新日期:2007-04-01 00:00:00