Abstract:
:Escherichia coli K1 is the most common gram-negative bacterium causing neonatal meningitis. The outer membrane protein A (OmpA) assembles a beta-barrel structure having four surface-exposed loops in E. coli outer membrane. OmpA of meningitis-causing E. coli K1 is shown to contribute to invasion of the human brain microvascular endothelial cells (HBMEC), the main cellular component of the blood-brain barrier (BBB). However, the direct evidence of OmpA protein interacting with HBMEC is not clear. In this study, we showed that OmpA protein, solubilized from the outer membrane of E. coli, adhered to HBMEC surface. To verify OmpA interaction with the HBMEC, we purified N-terminal membrane-anchoring beta-barrel domain of OmpA and all surface-exposed loops deleted OmpA proteins, and showed that the surface-exposed loops of OmpA were responsible for adherence to HBMEC. These findings indicate that the OmpA is the adhesion molecule with HBMEC and the surface-exposed loops of OmpA are the determinant of this interaction.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Shin S,Lu G,Cai M,Kim KSdoi
10.1016/j.bbrc.2005.03.097subject
Has Abstractpub_date
2005-05-20 00:00:00pages
1199-204issue
4eissn
0006-291Xissn
1090-2104pii
S0006-291X(05)00604-2journal_volume
330pub_type
杂志文章abstract::GTP cyclohydrolase I (GTPCH) is the first and rate-limiting enzyme for the synthesis of tetrahydrobiopterin (BH4), a cofactor of nitric oxide synthase (NOS). As the induction of NO synthesis by immunostimulants in vascular smooth muscle (VSM) cells requires de novo synthesis of BH4, we investigated whether immunostimu...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1993.2062
更新日期:1993-08-31 00:00:00
abstract::Fusarium graminearum produces trichothecenes in aerial hyphae, a process which is markedly suppressed by NaCl without a significant effect on fungal growth. Here we report on the involvement of kinases of the two-component osmotic signal transduction pathway in the regulation of secondary metabolism in F. graminearum....
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2007.09.027
更新日期:2007-11-23 00:00:00
abstract::Hsp90 and its co-chaperone Cdc37 are required for the activity of numerous eukaryotic protein kinases. c-Jun N-terminal kinases (JNKs) appear to be Hsp90-independent kinases, as their activity is unaffected by Hsp90 inhibition. It is currently unknown why some protein kinases are Hsp90- and Cdc37-dependent for their f...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2005.10.100
更新日期:2005-12-23 00:00:00
abstract::Rap1 and Rap2 are similar Ras-like G proteins but perform distinct functions. By the affinity chromatography/mass-spectrometry approach and the yeast two-hybrid screening, we identified Misshapen/NIKs-related kinase (MINK) as a novel Rap2-interacting protein that does not interact with Rap1 or Ras. MINK is a member of...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2008.10.038
更新日期:2008-12-12 00:00:00
abstract::Mono-oxygenase (cresolase) activity of mushroom tyrosinase (MT) in the presence of 4-[(4-hydroxyphenyl)azo]-benzenesulfonamide (HPABS) was successfully studied by resonance Raman (rR) spectroscopy. HPABS is a synthetic competitive inhibitor (K(i)=7.17 x 10(-6)M) for the cresolase activity with a large extinction coeff...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2003.12.197
更新日期:2004-02-20 00:00:00
abstract::Bacterial strains were isolated from the pig colon to screen for phytase and acid phosphatase activities. Among 93 colonies, Colony 88 had the highest activities for both enzymes and was identified as an Escherichia coli strain. Using primers derived from the E. coli pH 2.5 acid phosphatase appA sequence (Dassa et al....
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1999.0361
更新日期:1999-04-02 00:00:00
abstract::Cofilin, a key regulator of actin filament dynamics, binds to G- and F-actin and promotes actin filament turnover by stimulating depolymerization and severance of actin filaments. In this study, cytochalasin D (CytoD), a widely used inhibitor of actin dynamics, was found to act as an inhibitor of the G-actin-cofilin i...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2012.06.063
更新日期:2012-07-20 00:00:00
abstract::We previously found a new endogenous factor in rat liver cytosol, named ATP-stimulated glucocorticoid-receptor translocation promoter (ASTP), that increased the binding of activated glucocorticoid-receptor to nuclei in the presence of ATP. We have cloned and sequenced a cDNA (2989 bp) encoding the ASTP protein. An ope...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1993.1703
更新日期:1993-06-30 00:00:00
abstract::Myeloid cell leukemia-1 (Mcl-1) plays an important role in survival, chemo- and radioresistance of head and neck squamous cell carcinoma (HNSCC). Cyclin-dependent kinase 9/cyclin T (CDK9) promotes excessive production of multiple pro-survival proteins including Mcl-1, leading to impaired apoptosis of cancer cells. As ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2016.11.049
更新日期:2017-01-22 00:00:00
abstract::Induction of cyclin D1 expression is a critical feature of growth factor-induced cell proliferation in hepatocytes. To clarify the mechanisms regulating cyclin D1 gene expression, we isolated the rat cyclin D1 gene and analyzed the transcriptional regulatory elements in rat hepatoma cells and primary cultured rat hepa...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(02)02867-x
更新日期:2003-01-10 00:00:00
abstract::Our earlier studies on cell adhesion to immobilized carbohydrates are extended here to a marine bacterium, Vibrio furnissii. Apparently one lectin mediates the binding of these cells to glycosides of N-acetylglucosamine, mannose, and glucose covalently linked to Agarose beads. Kinetic studies show that protein synthes...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(87)91608-1
更新日期:1987-11-30 00:00:00
abstract::V3 loop peptides from three different human immunodeficiency virus type 1 (HIV-1) strains were synthesized. BH10, ADA, and 89.6 strains whose infections are dependent on CXCR4, CCR5, and both, respectively, were selected. Co-transfection of luciferase reporter gene and corresponding envelope genes (HXB2, ADA, and 89.6...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(02)02253-2
更新日期:2002-09-27 00:00:00
abstract::Apigenin, a plant flavonoid, induced the reversion of transformed phenotypes of v-H-ras-transformed NIH 3T3 cells at a quite low concentration of 12.5 microM. In the present study, we have examined the components of this Ras-mediated signaling transduction to determine whether they were involved in the apigenin-induce...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1995.2035
更新日期:1995-07-26 00:00:00
abstract::Deinococcus radiodurans exhibits an extraordinary ability to withstand the lethal and mutagenic effects of DNA damaging agents, particularly, ionizing radiation. Available evidence indicates that efficient repair of DNA damage and protection of the chromosomal structure are mainly responsible for the radioresistance. ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(03)00965-3
更新日期:2003-06-27 00:00:00
abstract::p21-activated kinase (PAK) and Rho-associated kinase (Rho-kinase) have been shown to induce Ca(2+)-independent contraction of smooth muscle. PAK-induced contraction of Triton-skinned smooth muscle correlates with increased phosphorylation of caldesmon and desmin, although the role of desmin phosphorylation has remaine...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2000.2854
更新日期:2000-06-16 00:00:00
abstract::In a previous genome-wide association study on milk production traits in Chinese Holstein population, we revealed VPS28 gene was highly expressed in mammary gland tissue and a -58C > T mutation in 5'-UTR of it was significantly associated with milk fat content traits. In this study, we explored the effect of this -58C...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2019.01.016
更新日期:2019-03-19 00:00:00
abstract::Epinephrine was used to activate the heparin non-releasable lipoprotein lipase (LPL) in the 3 skeletal muscle fiber types of the perfused rat hindlimb. Following a 9 min washout of the capillary-bound lipoprotein lipase, the hindquarter of the rat was perfused with a buffer containing 10 nM of epinephrine. Activity of...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(89)91504-0
更新日期:1989-10-31 00:00:00
abstract::Resveratrol (trans-3,5,4'-trihydroxystilbene), a polyphenolic compound found largely in the skins of red grapes, has been used as a nutritional supplement or an investigational new drug for prevention of cardiovascular diseases. Previous reports showed that resveratrol had a protective effect against oxidative agent-i...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2007.06.025
更新日期:2007-08-17 00:00:00
abstract::We have studied the oligosaccharide chains of the variant surface glycoprotein (VSG) of Trypanosoma brucei brucei MITat 1.6. Glycopeptides were generated by Pronase digestion, purified by gel permeation and ion-exchange chromatography, and structurally characterized by 1H and 31P NMR spectroscopy in combination with c...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1993.2412
更新日期:1993-11-15 00:00:00
abstract::The expression of the transcription factor Sp1 and EGF receptor (EGFR) was examined on human gastric carcinoma cell lines and gastric carcinoma tissues as well as corresponding normal mucosa in order to clarify the mechanism of overexpression of EGFR gene without gene amplification. All 7 carcinoma cell lines expresse...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(92)90221-6
更新日期:1992-12-30 00:00:00
abstract::Liver X receptors LXRα (NR1H3) and LXRβ (NR1H2) are transcription factors belonging to the nuclear receptor superfamily, activated by specific oxysterols, oxidized derivatives of cholesterol. These receptors are involved in the regulation of testis physiology. Lxr-deficient mice pointed to the physiological roles of t...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2013.12.005
更新日期:2014-04-11 00:00:00
abstract::Hypoxia and the androgen receptor (AR) play important roles in the development and progression of prostate cancer. In this study, the combined effects of dihydrotestosterone (DHT) and hypoxia on AR-mediated transactivation were investigated. Hypoxia alone did not induce a detectable ARE-mediated response in the absenc...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2012.01.019
更新日期:2012-02-10 00:00:00
abstract::Abnormal plasma ascorbic acid (AA) and dehydroascorbic acid (DHAA) levels observed in diabetes may be correlated to a deficiency in the recycling of AA. Ascorbic acid and DHAA levels are altered in diabetic liver in the present study. In addition, a coupling of the hexose monophosphate (HMP) shunt by way of NADPH to g...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1993.1365
更新日期:1993-03-31 00:00:00
abstract::The gene III protein (pIII) from phi Lf, a filamentous phage of Xanthomonas campestris pv.campestris, was purified by gel filtration with FPLC. The gIII coding region was amplified by PCR, which was then cloned into pUC18 and expressed in Escherichia coli. The size of both pIII, purified from phage particle and expres...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1997.7932
更新日期:1998-01-06 00:00:00
abstract::Ras can become activated via multiple distinct receptors in T lymphocytes. However, mechanistic studies of Ras signaling in normal T cells have been hampered by the lack of an efficient technology for gene transfer into resting post-thymic cells. We have overcome this limitation by utilizing adenoviral transduction of...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2003.10.168
更新日期:2003-12-19 00:00:00
abstract::The effects of endothelins (ETs) on the production of stromelysins, a sub-family of matrix metalloproteinases, were examined in cultured astrocytes. The treatment of cultured rat astrocytes with ET-1 increased stromelysin-1 mRNA levels, while stromelysin-2 and -3 mRNAs were not affected. Immunocytochemical observation...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2008.04.064
更新日期:2008-07-11 00:00:00
abstract::Blockage of either nuclear factor-kappaB (NF-kappaB) or Akt sensitizes cancer cells to TNF-induced apoptosis. In this study, we investigated the undetermined effect of concurrent blockage of these two survival pathways on TNF-induced cytotoxicity in lung cancer cells. The results show that Akt contributes to TNF-induc...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2007.02.030
更新日期:2007-04-13 00:00:00
abstract::Glutathione (GSH) is the most abundant non-protein thiol that buffers reactive oxygen species in the brain. GSH does not reduce nitroxides directly, but in the presence of ascorbates, addition of GSH increases ascorbate-induced reduction of nitroxides. In this study, we used electron paramagnetic resonance (EPR) imagi...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2017.02.134
更新日期:2017-04-15 00:00:00
abstract::The ability of tissue plasminogen activator (tPA) to induce human umbilical vein endothelial (HUVE) cell migration was studied using an in vitro, serum-free wound assay system. At pharmacological doses, tPA stimulated HUVE cell migration dose-dependently. Treatment of cells with epsilon amino caproic acid (EACA) to de...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(90)90831-7
更新日期:1990-09-28 00:00:00
abstract::The integrity and the surface charge distribution of native low density lipoprotein (LDL) are prerequisites of its binding to the LDL receptor. Oxidation is one of the most important physiological effects resulting in an altered structure and metabolism of LDL. To reveal forces responsible for maintaining the intact s...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1995.2639
更新日期:1995-11-02 00:00:00