Evidence for proteasomal degradation of Kv1.5 channel protein.

Abstract:

BACKGROUND:The voltage-gated potassium channel Kv1.5 plays a critical role in the maintenance of the membrane potential. While protein degradation is one of the major mechanisms for the regulation of channel functions, little is known on the degradation mechanism of Kv1.5. METHODS AND RESULTS:Kv1.5 was expressed in COS cells and its degradation, intracellular localization, and channel activities were assessed by pulse-chase analysis, immunofluorescence, and patch clamp techniques, respectively. Expressed Kv1.5 had a half-life time of approximately 6.7 h, which was prolonged by the proteasome inhibitors of MG132, ALLN, proteasomal inhibitor 1, or lactacystine, but not by a lysosomal inhibitor chloroquine. MG132 increased the protein level of Kv1.5, as well as the level of its ubiquitinated form in a dose-dependent manner. Similar effects of MG132 on endogenous Kv1.5 were seen in cultured rat atrial cells. Within a cell, Kv1.5 was mainly localized in both the endoplasmic reticulum and Golgi apparatus. MG132 increased the immunoreactivity of Kv1.5 in these compartments and also increased Ik(ur) currents through the cell-surface Kv1.5. Pretreatment with either brefeldin A or colchicine abolished MG132-induced increase in Ik(ur) currents. CONCLUSION:Kv1.5 is degraded by the proteasome. The inhibition of the proteasome increased Ik(ur) currents secondary to stabilization of the channel protein in the endoplasmic reticulum/Golgi apparatus.

authors

Kato M,Ogura K,Miake J,Sasaki N,Taniguchi S,Igawa O,Yoshida A,Hoshikawa Y,Murata M,Nanba E,Kurata Y,Kawata Y,Ninomiya H,Morisaki T,Kitakaze M,Hisatome I

doi

10.1016/j.bbrc.2005.09.053

subject

Has Abstract

pub_date

2005-11-11 00:00:00

pages

343-8

issue

1

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(05)02060-7

journal_volume

337

pub_type

杂志文章
  • Insulin stimulates phosphorylation of a heat-stable protein in rat adipose tissue.

    abstract::Insulin in rat adipose tissue acts to increase the phosphorylation about 2.5-fold of a low molecular weight protein in the cytosol designated phosphoprotein m. Isoproterenol had no effect on the phosphorylation of phosphoprotein m. Some of the properties of phosphoprotein m are: soluble in 1% trichloro acetic acid, he...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/0006-291x(83)91662-5

    authors: Ramakrishna S,Benjamin WB

    更新日期:1983-12-28 00:00:00

  • Detection of cellular receptors specific for the hepatitis B virus preS surface protein on cell lines of extrahepatic origin.

    abstract::Hepatitis B virus infection is primarily mediated by the interaction of the preS region of the viral envelope protein with its still unknown cellular receptor. Using recombinantly expressed preS proteins, the distribution of preS-binding receptors on cell lines from extrahepatic origins was determined by immunofluores...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1006/bbrc.2000.3661

    authors: Park JH,Choi EA,Cho EW,Lee YJ,Park JM,Na SY,Kim KL

    更新日期:2000-10-14 00:00:00

  • Separation of H7-resistant protein kinase C isoforms from gonadotroph-derived alpha T3-1 cells.

    abstract::Certain physiological events in anterior pituitary tissue are regulated by protein kinase C that is relatively resistant to the inhibitor, H7. In the present studies we have shown that two H7-resistant protein kinase C activities may be isolated from (pituitary) gonadotroph-derived alpha T3-1 cells using hydroxyapatit...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1006/bbrc.1996.0128

    authors: Simpson J,Johnson MS,Clegg RA,Mitchell R

    更新日期:1996-01-26 00:00:00

  • An antifungal protein from ginger rhizomes.

    abstract::There are very few reports on antifungal proteins from rhizomes and there is none from the family of Zingiberaceae. An antifungal protein with a novel N-terminal sequence was isolated from ginger rhizomes utilizing a protocol that involved ion exchange chromatography on DEAE-cellulose, affinity chromatography on Affi-...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/j.bbrc.2005.08.058

    authors: Wang H,Ng TB

    更新日期:2005-10-14 00:00:00

  • Hyaluronic acid is an endogenous inducer of interleukin-1 production by human monocytes and rabbit macrophages.

    abstract::When human peripheral monocytes and rabbit peritoneal macrophages were incubated with hyaluronic acid, the media were found to contain interleukin-1 (IL-1) activity and to stimulate collagenase production by rabbit fibroblasts. A digestion of hyaluronic acid by testicular hyaluronidase decreased the IL-1 inducing acti...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/0006-291x(86)90790-4

    authors: Hiro D,Ito A,Matsuta K,Mori Y

    更新日期:1986-10-30 00:00:00

  • Bioactive synthetic peptide of NDF/heregulin.

    abstract::A folded synthetic peptide analog of NDF (NDF5), which has the 52 amino acid EGF-like domain of NDF alpha 2, has been characterized. The folded peptide stimulates tyrosine phosphorylation of Her2, Her3 and Her4 in breast cancer cells and competes with low affinity with full-length NDF alpha 2 for binding to the cells,...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1006/bbrc.1995.1680

    authors: Kita Y,Mayer J,Zamborelli T,Hara S,Rohde M,Watson E,Koski R,Ratzkin B,Nicolson M

    更新日期:1995-05-16 00:00:00

  • Transcription factor Yin Yang 1 stimulates poly(ADP-ribosyl)ation and DNA repair.

    abstract::Poly(ADP-ribose) polymerase 1 (PARP-1) is a nuclear enzyme that catalyzes the synthesis of ADP-ribose polymers from NAD(+). The function of PARP-1 is related to important nuclear processes including DNA repair and transcription. Previous studies demonstrated a specific physical interaction between PARP-1 and the trans...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1006/bbrc.2001.4985

    authors: Oei SL,Shi Y

    更新日期:2001-06-08 00:00:00

  • CircNUP214 sponges miR-145 to promote the expression of ZEB2 in thyroid cancer cells.

    abstract::Circular (circ)RNAs have been implicated in cancer development. However, few studies have examined the role of circRNAs in papillary thyroid cancer (PTC). In this study we found that circNUP214 was upregulated in clinical PTC specimens relative to adjacent normal tissue. In vitro analyses showed that circNUP214 knockd...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/j.bbrc.2018.10.200

    authors: Li X,Tian Y,Hu Y,Yang Z,Zhang L,Luo J

    更新日期:2018-12-09 00:00:00

  • Zinc coupling potentiates anti-HIV-1 activity of baicalin.

    abstract::Baicalin (BA) has been shown with anti-HIV-1 activity. Zinc is a nutrient element. The anti-HIV-1 activity of zinc complex of baicalin (BA-Zn) in vitro was studied and compared with the anti-HIV-1 activities between BA and BA-Zn in the present study. Our results suggested that BA-Zn has lower cytotoxicity and higher a...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/j.bbrc.2004.09.093

    authors: Wang Q,Wang YT,Pu SP,Zheng YT

    更新日期:2004-11-12 00:00:00

  • COMMD1 regulates the delta epithelial sodium channel (δENaC) through trafficking and ubiquitination.

    abstract::The delta subunit of the epithelial sodium channel (δENaC) is a member of the ENaC/degenerin family of ion channels. δENaC is distinct from the related α-, β- and γENaC subunits, known for their role in sodium homeostasis and blood pressure control, as δENaC is expressed in brain neurons and activated by external prot...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/j.bbrc.2011.06.149

    authors: Chang T,Ke Y,Ly K,McDonald FJ

    更新日期:2011-08-05 00:00:00

  • Different effects of GPR120 and GPR40 on cellular functions stimulated by 12-O-tetradecanoylphorbol-13-acetate in melanoma cells.

    abstract::G-protein-coupled receptor 120 (GPR120) and GPR40 exhibit a variety of biological responses by the binding of free fatty acids. 12-O-Tetradecanoylphorbol-13-acetate (TPA) is a tumor promoting agent of skin carcinogenesis. It is known that TPA treatment stimulates cell motile activity of cancer cells, including melanom...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/j.bbrc.2016.05.023

    authors: Fukushima K,Takahashi K,Fukushima N,Honoki K,Tsujiuchi T

    更新日期:2016-06-17 00:00:00

  • Involvement of nuclear transcription factor Sp1 in regulating glucose transporter-1 gene expression during rat trophoblast differentiation.

    abstract::Glucose transporter-1 (GLUT1) is important in placental glucose transport. However, the mechanism of regulation of placental GLUT1 expression remains to be elucidated. We show here that the level of GLUT1 protein in rat choriocarcinoma cells (Rcho-1) decreased during differentiation. To analyze the regulatory mechanis...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1006/bbrc.2001.5860

    authors: Okamoto Y,Sakata M,Yamamoto T,Nishio Y,Adachi K,Ogura K,Yamaguchi M,Takeda T,Tasaka K,Murata Y

    更新日期:2001-11-09 00:00:00

  • Molecular architecture of leishmania EF-1alpha reveals a novel site that may modulate protein translation: a possible target for drug development.

    abstract::Elongation factor-1alpha plays an essential role in eukaryotic protein biosynthesis. Recently, we have shown by protein structure modeling the presence of a hairpin-loop of 12 amino acids in mammalian EF-1alpha that is absent in the leishmania homologue [D. Nandan, A. Cherkasov, R. Sabouti, T. Yi, N.E. Reiner, Molecul...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/j.bbrc.2007.03.077

    authors: Lopez M,Cherkasov A,Nandan D

    更新日期:2007-05-18 00:00:00

  • Activation of Ca2+-stimulated ATPase by phospholipid N-methylation in cardiac sarcoplasmic reticulum.

    abstract::Incubation of cardiac sarcoplasmic reticulum (SR) in the presence of S-adenosyl-L-methionine, a methyl donor for the enzymatic N-methylation of phosphatidylethanolamine, increased Ca2+-stimulated ATPase activity. The increase in Ca2+-ATPase activity was not due to changes in the affinity for Ca2+ and was prevented by ...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/0006-291x(85)90441-3

    authors: Ganguly PK,Panagia V,Okumura K,Dhalla NS

    更新日期:1985-07-16 00:00:00

  • Effect of platelet release products on cytosolic calcium in cardiac myocytes.

    abstract::The effect of platelet release products on cytosolic calcium [( Ca++]i) was examined by monitoring the fluorescence of chick embryonic heart cells loaded with the fluorescent calcium indicator indo-1 AM. Cell free filtrate of platelet release products was obtained from rabbit platelets activated with thrombin or colla...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/0006-291x(90)90509-l

    authors: Chien WW,Mohabir R,Newman D,Leung LL,Clusin WT

    更新日期:1990-08-16 00:00:00

  • A role for Rab5 activity in the biogenesis of endosomal and lysosomal compartments.

    abstract::Rab5 is a small GTPase that plays roles in the homotypic fusion of early endosomes and regulation of intracellular vesicle transport. We show here that expression of GFP-tagged GTPase-deficient form of Rab5b (Rab5bQ79L) in NRK cells results in the sequential formation of three morphologically and functionally distinct...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/j.bbrc.2007.09.089

    authors: Hirota Y,Kuronita T,Fujita H,Tanaka Y

    更新日期:2007-12-07 00:00:00

  • Rho-kinase regulates endothelin-1-stimulated IL-6 synthesis via p38 MAP kinase in osteoblasts.

    abstract::We have previously reported that endothelin-1 (ET-1) stimulates interleukin-6 (IL-6), a potent bone resorptive agent, through p44/p42 mitogen-activated protein (MAP) kinase and p38 MAP kinase in osteoblast-like MC3T3-E1 cells. In the present study, we investigated the involvement of Rho-kinase in the ET-1-stimulated I...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/j.bbrc.2007.08.018

    authors: Tokuda H,Hanai Y,Matsushima-Nishiwaki R,Yamauchi J,Doi T,Harada A,Takai S,Kozawa O

    更新日期:2007-11-03 00:00:00

  • Monolayer expansion induces an oxidative metabolism and ROS in chondrocytes.

    abstract::This study tests the hypothesis that articular chondrocytes shift from a characteristically glycolytic to an oxidative energy metabolism during population expansion in monolayer. Bovine articular chondrocytes were cultured in monolayer under standard incubator conditions for up to 14 days. Cellular proliferation, oxyg...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/j.bbrc.2008.06.011

    authors: Heywood HK,Lee DA

    更新日期:2008-08-22 00:00:00

  • Evidence that two reports of mtDNA cytochrome c oxidase "mutations" in Alzheimer's disease are based on nDNA pseudogenes of recent evolutionary origin.

    abstract::Recently, two reports [R. E. Davis et al. (1997) Proc. Natl. Acad. Sci. USA 94, 4564-4569 and E. Fahy et al. (1997) Nucleic Acids Res. 25, 3102-3109] described a series of heteroplasmic mitochondrial DNA (mtDNA) mutations in the genes encoding two cytochrome c oxidase subunits (CO1 and CO2) which segregated in higher ...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1006/bbrc.1998.8353

    authors: Davis JN 2nd,Parker WD Jr

    更新日期:1998-03-27 00:00:00

  • Mature interleukin-33 is produced by calpain-mediated cleavage in vivo.

    abstract::Interleukin (IL)-33 is a novel member of the IL-1 family. IL-33 is primarily synthesized as a 30-kDa precursor (pro-IL-33). Pro-IL-33 is cleaved by caspase-1 into an 18-kDa mature form (mature IL-33) in vitro. Recombinant mature IL-33 has been known to induce T-helper type-2 (Th2)-associated cytokines and inflammatory...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/j.bbrc.2009.07.018

    authors: Hayakawa M,Hayakawa H,Matsuyama Y,Tamemoto H,Okazaki H,Tominaga S

    更新日期:2009-09-11 00:00:00

  • Effects of SH-group reagents on Ca2+ and K+ channel currents of pancreatic B-cells.

    abstract::The whole-cell patch-clamp technique has been applied to elucidate the effects of H2O2 and the SH-group reagent 2,2'-dithio-bis(5-nitropyridine) (DTBNP) on Ca2+ currents of mouse pancreatic B-cells. We also tested the effect of DTBNP on the whole-cell K+ ATP current. DTBNP (20 and 100 mumol/l) blocked both the current...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1006/bbrc.1994.1530

    authors: Krippeit-Drews P,Britsch S,Lang F,Drews G

    更新日期:1994-04-29 00:00:00

  • Esco2 is a novel corepressor that associates with various chromatin modifying enzymes.

    abstract::Accurate chromosome segregation during cell division requires that sister chromatids are kept together by cohesin complex until anaphase, when the chromatids separate and distribute to the two daughter cells. Esco2 is an acetyltransferase that is required for the establishment of sister chromatid cohesion during S pha...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/j.bbrc.2008.05.056

    authors: Kim BJ,Kang KM,Jung SY,Choi HK,Seo JH,Chae JH,Cho EJ,Youn HD,Qin J,Kim ST

    更新日期:2008-07-25 00:00:00

  • Demonstration of phosphatidylinositol anchors on Ly-6 molecules by specific phospholipase C digestion and gel electrophoresis in octylglucoside.

    abstract::Release by phosphatidylinositol-specific phospholipase C is frequently provided as evidence for membrane anchorage of a protein through phosphatidylinositol. Demonstration that the enzyme removes a lipophilic moiety from the protein is stronger evidence, and is presented here for members of the Ly-6 family of lymphocy...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/s0006-291x(87)80275-9

    authors: Hammelburger JW,Palfree RG,Sirlin S,Hämmerling U

    更新日期:1987-11-13 00:00:00

  • Long helical filaments are not seen encircling cells in electron cryotomograms of rod-shaped bacteria.

    abstract::How rod-shaped bacteria form and maintain their shape is an important question in bacterial cell biology. Results from fluorescent light microscopy have led many to believe that the actin homolog MreB and a number of other proteins form long helical filaments along the inner membrane of the cell. Here we show using el...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/j.bbrc.2011.03.062

    authors: Swulius MT,Chen S,Jane Ding H,Li Z,Briegel A,Pilhofer M,Tocheva EI,Lybarger SR,Johnson TL,Sandkvist M,Jensen GJ

    更新日期:2011-04-22 00:00:00

  • Lysosomal tartrate sensitive acid phosphatase deficiency in cells which contain lysosomal "high uptake forms".

    abstract::The catalytic and immunological properties of acid phosphatases (EC 3.1.3.2.) in different tissues were studied. It was demonstrated that high uptake forms of lysosomal enzymes like beta-galactosidase isolated from human platelets and bovine testis are mature enzymes, which have not lost their mannose-6phosphate marke...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/0006-291x(90)92055-5

    authors: Hu P,Parenti G,Keulemans J,Hoogeveen AT

    更新日期:1990-03-16 00:00:00

  • EMT-inducing transcription factor ZEB1-associated resistance to the BCL-2/BCL-XL inhibitor is overcome by BIM upregulation in ovarian clear cell carcinoma cells.

    abstract::Ovarian clear cell carcinoma (OCCC) is an aggressive subtype of epithelial ovarian cancer, which generally exhibits chemoresistance. Effective therapy for OCCC is currently unavailable, requiring the development of new therapeutic strategies. ABT-263 (navitoclax), an inhibitor of the anti-apoptotic BCL-2/BCL-XL, has a...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/j.bbrc.2020.03.139

    authors: Inoue-Yamauchi A,Oda H

    更新日期:2020-06-04 00:00:00

  • Molecular cloning and characterization of a novel human gene containing ankyrin repeat and double BTB/POZ domain.

    abstract::A novel human gene containing an ankyrin repeat and BTB/POZ domains (BPOZ) was isolated from a human leukocyte cDNA library. The cDNA sequence contains an open reading frame of 1434 bp that encodes 478 amino acid residues with a predicted molecular mass of 53.9 kDa. Sequence pattern analysis shows that BPOZ contains a...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1006/bbrc.2000.3053

    authors: Dai KS,Wei W,Liew CC

    更新日期:2000-07-14 00:00:00

  • Isolation of tumor disturbing factor on the proliferation of tumor cells in human serum.

    abstract::The classified sediment with ethanol from sera of nude mice and humans showed a disturbing effect on L1210 cells in vitro and a lifesaving effect on L1210 cell-bearing mice in vivo. This factor was purified more than 2300-fold to a specific activity of approximately 1 X 10(5) U/mg by ethanol classified precipitation, ...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/0006-291x(84)91285-3

    authors: Sakagami Y,Manabe H

    更新日期:1984-04-30 00:00:00

  • PPPDE1 is a novel deubiquitinase belonging to a cysteine isopeptidase family.

    abstract::Ubiquitinlation of proteins is prevalent and important in both normal and pathological cellular processes. Deubiquitinating enzymes (DUBs) can remove the ubiquitin tags on substrate proteins and dynamically regulate the ubiquitination process. The PPPDE family proteins were predicted to be a novel class of deubiquitin...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/j.bbrc.2017.04.161

    authors: Xie X,Wang X,Jiang D,Wang J,Fei R,Cong X,Wei L,Wang Y,Chen H

    更新日期:2017-06-24 00:00:00

  • Biointerface topography regulates phenotypic switching and cell apoptosis in vascular smooth muscle cells.

    abstract:BACKGROUND:In-stent restenosis (ISR) is a complex disease that occurs after coronary stenting procedures. The development of quality materials and improvement of our understanding on significant factors regulating ISR are essential for enhancing prognosis. Vascular smooth muscle cells (VSMCs) are the main constituent c...

    journal_title:Biochemical and biophysical research communications

    pub_type: 杂志文章

    doi:10.1016/j.bbrc.2020.03.038

    authors: Han L,Yin Q,Yang L,van Rijn P,Yang Y,Liu Y,Li M,Yan M,Zhou Q,Yu T,Lian Z

    更新日期:2020-06-04 00:00:00