Organization of HIV-1 pol is critical for Pol polyprotein processing.

Abstract:

:The HIV pol sequentially encodes protease (PR), reverse transcriptase (RT), and integrase (IN) from the 5'-3' direction. We explored the significance of this gene arrangement. All six possible gene dispositions were examined. In two situations where PR was removed from the leading place and no two genes were in their original location, viral polyprotein processing was abolished. Processing of the polyprotein did not occur when IN was translocated to the front of PR-RT. However, in the following two arrangements, the polyprotein was processed but only at specific sites. First, PR remained in the leading position while the locations of RT and IN were exchanged; viral polyprotein was processed at a site between the upstream transframe peptide (TF) and PR. Second, PR was placed after RT-IN and located at the distal end of Pol. Processing occurred only at the created junction between TF and RT. These results indicated that cleavage after TF occurred autocatalytically but did not proceed to a second site, which needed an extraneous PR for trans-action. Therefore, arranging Pol in the order of PR-RT-IN warrants the streamline processing of the polyprotein once the autocleavage is initiated.

journal_name

J Biomed Sci

authors

Chang YY,Yu SL,Syu WJ

doi

10.1007/BF02253522

keywords:

subject

Has Abstract

pub_date

1999-09-01 00:00:00

pages

333-41

issue

5

eissn

1021-7770

issn

1423-0127

pii

25405

journal_volume

6

pub_type

杂志文章
  • Inhibitory effects of armepavine against hepatic fibrosis in rats.

    abstract::Activation of hepatic stellate cells (HSCs) plays a crucial role in liver fibrogenesis. armepavine (Arm, C19H23O3N), an active compound from Nelumbo nucifera, has been shown to exert immunosuppressive effects on T lymphocytes and on lupus nephritic mice. The aim of this study was to investigate whether Arm could exert...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1186/1423-0127-16-78

    authors: Weng TC,Shen CC,Chiu YT,Lin YL,Kuo CD,Huang YT

    更新日期:2009-09-02 00:00:00

  • Involvement of an alternatively spliced mitochondrial oxodicarboxylate carrier in adipogenesis in 3T3-L1 cells.

    abstract:BACKGROUND:Adipogenesis is a complex process that involves many genes/proteins at different stages of differentiation. In order to identify genes critical for adipogenesis, we took a novel approach based on phenotype change of individual cell, to search for genes with regulatory roles in adipogenesis genome-wide in 3T3...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1186/1423-0127-16-92

    authors: Niimi M,Tao L,Lin SH,Yin J,Wu X,Fukui H,Kambayashi J,Ye J,Sun B

    更新日期:2009-10-13 00:00:00

  • Hepatic zonation of carbon and nitrogen fluxes derived from glutamine and ammonia transformations.

    abstract:BACKGROUND:Glutaminase predominates in periportal hepatocytes and it has been proposed that it determines the glutamine-derived nitrogen flow through the urea cycle. Glutamine-derived urea production should, thus, be considerably faster in periportal hepatocytes. This postulate, based on indirect observations, has not ...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1186/1423-0127-17-1

    authors: Comar JF,Suzuki-Kemmelmeier F,Constantin J,Bracht A

    更新日期:2010-01-07 00:00:00

  • Functional Analysis of the ACTGCTGA Sequence Motif in the Human Immunodeficiency Virus Type-1 Long Terminal Repeat Promoter.

    abstract::The ACTGCTGA sequence (CTG motif) is located immediately upstream of the NF-kappaB enhancer in the human immunodeficiency virus type-1 (HIV-1) long terminal repeat (LTR). We previously reported on the frequent duplication of this motif in HIV-1-infected individuals. In this study we further characterized the role of t...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1007/BF02257981

    authors: Koken SE,van Wamel JL,Geelen JL,Berkhout B

    更新日期:1994-03-01 00:00:00

  • Generation of HIV-1/HIV-2 cross-reactive peptide antisera by small sequence changes in HIV-1 reverse transcriptase and integrase immunizing peptides.

    abstract::We have generated peptide antisera against selected regions in HIV-1 and HIV-2 reverse transcriptase (RT) and integrase (IN) to investigate the specificity of determinants governing the immune response. Peptides representing homologous regions (>50%) in the N- and C-termini and central portions of these proteins were ...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1007/BF02253469

    authors: Klutch M,Woerner AM,Marcus-Sekura CJ,Levin JG

    更新日期:1998-01-01 00:00:00

  • Hepatitis C virus ARFP/F protein interacts with cellular MM-1 protein and enhances the gene trans-activation activity of c-Myc.

    abstract::The ARFP/F protein is synthesized from the +1 reading frame of the hepatitis C virus (HCV) core protein gene. The function of this protein remains unknown. To study the function of the HCV ARFP/F protein, we have conducted the yeast two-hybrid screening experiment to identify cellular proteins that may interact with t...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1007/s11373-008-9248-9

    authors: Ma HC,Lin TW,Li H,Iguchi-Ariga SM,Ariga H,Chuang YL,Ou JH,Lo SY

    更新日期:2008-07-01 00:00:00

  • Tat, Tat-associated kinase, and transcription.

    abstract::The HIV-1 Tat protein is an RNA-binding transcriptional transactivator. Recent findings suggest that Tat associates with a cellular kinase that phosphorylates the carboxyl-terminal domain of the largest subunit of RNA polymerase II. Here we review, in brief, the role of Tat-associated kinase in Tat-activated transcrip...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章,评审

    doi:10.1007/BF02253352

    authors: Jeang KT

    更新日期:1998-01-01 00:00:00

  • Bcl-2 upregulation by HIV-1 Tat during infection of primary human macrophages in culture.

    abstract::The ability of cells of the human monocyte/macrophage lineage to host HIV-1 replication while resisting cell death is believed to significantly contribute to their ability to serve as a reservoir for viral replication in the host. Although macrophages are generally resistant to apoptosis, interruption of anti-apoptoti...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1007/BF02256024

    authors: Zhang M,Li X,Pang X,Ding L,Wood O,Clouse KA,Hewlett I,Dayton AI

    更新日期:2002-03-01 00:00:00

  • Biomarkers of severe dengue disease - a review.

    abstract::Dengue virus infection presents a wide spectrum of manifestations including asymptomatic condition, dengue fever (DF), or severe forms, such as dengue hemorrhagic fever (DHF) and dengue shock syndrome (DSS) in affected individuals. The early prediction of severe dengue in patients without any warning signs who may lat...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章,评审

    doi:10.1186/s12929-015-0191-6

    authors: John DV,Lin YS,Perng GC

    更新日期:2015-10-14 00:00:00

  • Phenotype and functionality of follicular helper T cells in patients with acute dengue infection.

    abstract:BACKGROUND:The association of functionality and phenotype of follicular helper T cells (Tfh) with dengue virus (DENV) specific antibody responses and clinical disease severity has not been well studied. METHODS:We investigated the phenotype and functionality of Tfh cells and plasmablasts in adult patients (DF = 18, DH...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1186/s12929-020-00641-2

    authors: Wijesinghe A,Gamage J,Goonewardena H,Gomes L,Jayathilaka D,Wijeratne DT,de Alwis R,Jeewandara C,Wijewickrama A,Ogg GS,Malavige GN

    更新日期:2020-04-08 00:00:00

  • Acid-sensing ion channels: dual function proteins for chemo-sensing and mechano-sensing.

    abstract:BACKGROUND:Acid-sensing ion channels (ASICs) are a group of amiloride-sensitive ligand-gated ion channels belonging to the family of degenerin/epithelial sodium channels. ASICs are predominantly expressed in both the peripheral and central nervous system and have been characterized as potent proton sensors to detect ex...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章,评审

    doi:10.1186/s12929-018-0448-y

    authors: Cheng YR,Jiang BY,Chen CC

    更新日期:2018-05-24 00:00:00

  • Different types of variant muscle nociception after intermittent and continuous neuromuscular stimulation in rats.

    abstract::Critical assessment of experimental muscle-pain models resulting from maximal muscle contraction may provide a means of assessing hypersensitivity and the central nociceptive mechanisms involved in diffused muscle pain. The aim of the present study was, therefore, to investigate the patterns of nociceptive behavior an...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1007/s11373-005-6595-7

    authors: Wang SF,Chen CC,Liao WS,Shyu BC

    更新日期:2005-01-01 00:00:00

  • Cytotoxicity and cell cycle arrest induced by andrographolide lead to programmed cell death of MDA-MB-231 breast cancer cell line.

    abstract:BACKGROUND:Breast cancer is considered as an increasing major life-threatening concern among the malignancies encountered globally in females. Traditional therapy is far from satisfactory due to drug resistance and various side effects, thus a search for complementary/alternative medicines from natural sources with les...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1186/s12929-016-0257-0

    authors: Banerjee M,Chattopadhyay S,Choudhuri T,Bera R,Kumar S,Chakraborty B,Mukherjee SK

    更新日期:2016-04-16 00:00:00

  • PAN RNA: transcriptional exhaust from a viral engine.

    abstract::Kaposi's sarcoma-associated herpesvirus (KSHV), also designated human herpesvirus 8 (HHV-8), has been linked to Kaposi's sarcoma, as well as to primary effusion lymphoma (PEL), and a subset of multicentric Castleman's disease. KSHV genomes are maintained as episomes within infected cells and the virus exhibits a bipha...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章,评审

    doi:10.1186/s12929-020-00637-y

    authors: Campbell M,Izumiya Y

    更新日期:2020-03-07 00:00:00

  • Insulin-like growth factor 1 improves the efficacy of mesenchymal stem cells transplantation in a rat model of myocardial infarction.

    abstract:BACKGROUND:Previous study demonstrated the improvement of cardiac function was proportional to the number of cells implanted. Therefore, increasing cell survival in the infarcted myocardium might contribute to the improvement of the functional benefit of cell transplantation. METHODS AND RESULTS:MSCs were treated with...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1007/s11373-007-9207-x

    authors: Guo J,Lin G,Bao C,Hu Z,Chu H,Hu M

    更新日期:2008-01-01 00:00:00

  • Expression of cyclooxygenase-2 related to angiogenesis in uterine cervical cancers.

    abstract::Angiogenesis is essential for development, growth and advancement of solid tumors. Cyclooxygenase (COX)-2 is recognized as an angiogenic factor in various tumors. This prompted us to study the clinical implications of COX-2 expression related to angiogenesis in uterine cervical cancers. There was a significant correla...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1007/s11373-006-9114-6

    authors: Fujimoto J,Toyoki H,Sato E,Sakaguchi H,Jahan I,Alam SM,Tamaya T

    更新日期:2006-11-01 00:00:00

  • Dextromethorphan prevents circulatory failure in rats with endotoxemia.

    abstract::Dextromethorphan (DM), an antitussive agent, has been claimed to have anti-inflammatory and immunomodulatory effects in vitro. Thus, the aim of this study was to evaluate the effects of DM on sepsis induced by intravenous (i.v.) administration of lipopolysaccharide (LPS) in anesthetized Wistar rats and by intraperiton...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1007/BF02254358

    authors: Wang CC,Lee YM,Wei HP,Chu CC,Yen MH

    更新日期:2004-11-01 00:00:00

  • Lysophosphatidylcholine alters vascular tone in rat aorta by suppressing endothelial [Ca(2+)](I) signaling.

    abstract::The detailed mechanism of how lysophosphatidylcholine (LPC) suppresses endothelium-dependent vasodilatation is unclear at present. We investigated the effects of LPC on endothelial intracellular calcium (EC [Ca(2+)](i)) signaling and vascular tone simultaneously using a new technique we developed. Fura-2-labeled rat a...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1007/BF02256588

    authors: Huang TY,Chen HI,Liu CY,Jen CJ

    更新日期:2002-07-01 00:00:00

  • Targeted antitumor prodrug therapy using CNGRC-yCD fusion protein in combination with 5-fluorocytosine.

    abstract:BACKGROUND:The enzyme-prodrug system is considered a promising tool for tumor treatment when conjugated with a targeting molecule. The asparagine-glycine-arginine (NGR) motif is a developing and interesting targeting peptide that could specifically bind to aminopeptidase N (APN), which is an NGR receptor expressed on t...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1186/s12929-016-0227-6

    authors: Li JJ,Chang SF,Liau II,Chan PC,Liu RS,Yen SH,Wang HE,Chang CA

    更新日期:2016-01-22 00:00:00

  • Skin Innervation and Its Effects on the Epidermis.

    abstract::Sensory innervation of the skin subserves protective sensations for the body to prevent thermal and noxious injuries. Neurophysiologically, they belong to the categories of Adelta and C fibers, usually with caliber less than one micro m in diameter. Morphological demonstration of the terminals of these nerves in the e...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1007/BF02253428

    authors: Hsieh ST,Lin WM,Chiang HY,Huang IT,Ko MH,Chang YC,Chen WP

    更新日期:1997-01-01 00:00:00

  • In vitro and in vivo targeted delivery of IL-10 interfering RNA by JC virus-like particles.

    abstract:BACKGROUND:RNA interference (RNAi) is a powerful tool to silence gene expression post-transcriptionally. Delivering sequences of RNAi in vivo remains a problem. The aim of this study was to use JC virus (JCV) virus-like particles (VLPs) as a vector for delivering RNAi in silencing the cytokine gene of IL-10. METHODS:J...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1186/1423-0127-17-51

    authors: Chou MI,Hsieh YF,Wang M,Chang JT,Chang D,Zouali M,Tsay GJ

    更新日期:2010-06-24 00:00:00

  • Long-term expansion of directly reprogrammed keratinocyte-like cells and in vitro reconstitution of human skin.

    abstract:BACKGROUND:Human keratinocytes and derived products are crucial for skin repair and regeneration. Despite substantial advances in engineered skin equivalents, their poor availability and immunorejection remain major challenges in skin grafting. METHODS:Induced keratinocyte-like cells (iKCs) were directly reprogrammed ...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1186/s12929-020-00642-1

    authors: Zheng J,Yun W,Park J,Kang PJ,Lee G,Song G,Kim IY,You S

    更新日期:2020-04-20 00:00:00

  • Cardiac glycosides induce resistance to tubulin-dependent anticancer drugs in androgen-independent human prostate cancer.

    abstract::Due to high prevalence and mortality and the lack of effective therapies, prostate cancer is one of the most crucial health problems in men. Drug resistance aggravates the situation, not only in human prostate cancer but also in other cancers. In this study, we report for the first time that cardiac glycosides (e.g. o...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1007/BF02256539

    authors: Huang DM,Guh JH,Huang YT,Chueh SC,Wang HP,Teng CM

    更新日期:2002-09-01 00:00:00

  • Gene deletion patterns in spinal muscular atrophy patients with different clinical phenotypes.

    abstract::Spinal muscular atrophy (SMA) is an autosomal recessive disorder characterized by degeneration of lower motor neurons. We have assayed deletions in two candidate genes, the survival motor neuron (SMN) and neuronal apoptosis inhibitory protein (NAIP) genes, in 108 samples, of which 46 were from SMA patients, and 62 wer...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1007/BF02256412

    authors: Haider MZ,Moosa A,Dalal H,Habib Y,Reynold L

    更新日期:2001-03-01 00:00:00

  • Transcriptional control of Flt3 ligand targeted by fluorouracil-induced Egr-1 promoter in hematopoietic damage.

    abstract:BACKGROUND:Ionizing radiation (IR) activate the early growth response-1 (Egr-1) promoter by production of radical oxygen intermediates (ROIs). Egr-EF, an expression vector pCIneo containing Egr-1 promoter cloned upstream of the cDNA for Flt3 ligand, was used to treat hematopoietic damage. 5-fluorouracil, a commonly use...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1186/1423-0127-16-85

    authors: Du N,Pei X,Zhou J,Zhao H,Li X,Fu Y,Hao Y

    更新日期:2009-09-21 00:00:00

  • Antitumor effect of therapeutic HPV DNA vaccines with chitosan-based nanodelivery systems.

    abstract:BACKGROUND:Cervical cancer is the second-most-common cause of malignancies in women worldwide, and the oncogenic activity of the human papilloma virus types (HPV) E7 protein has a crucial role in anogenital tumors. In this study, we have designed a therapeutic vaccine based on chitosan nanodelivery systems to deliver H...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1186/s12929-014-0069-z

    authors: Tahamtan A,Ghaemi A,Gorji A,Kalhor HR,Sajadian A,Tabarraei A,Moradi A,Atyabi F,Kelishadi M

    更新日期:2014-07-31 00:00:00

  • Enhanced muscarinic M1 receptor gene expression in the corpus striatum of streptozotocin-induced diabetic rats.

    abstract::Acetylcholine (ACh), the first neurotransmitter to be identified, regulate the activities of central and peripheral functions through interactions with muscarinic receptors. Changes in muscarinic acetylcholine receptor (mAChR) have been implicated in the pathophysiology of many major diseases of the central nervous sy...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1186/1423-0127-16-38

    authors: Gireesh G,Kumar TP,Mathew J,Paulose C

    更新日期:2009-04-03 00:00:00

  • DHEA attenuates catecholamine secretion from bovine adrenal chromaffin cells.

    abstract::Dehydroepiandrosterone (DHEA) is a putative anti-stress agent and stress is associated with the secretion of catecholamine from the adrenal gland, but the effects of DHEA on catecholamine secretion are not fully understood. Using bovine chromaffin cells, we found that DHEA inhibited catecholamine secretion and cytosol...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1007/BF02256563

    authors: Liu PS,Wang PY

    更新日期:2004-03-01 00:00:00

  • Immunotherapy for liver tumors: present status and future prospects.

    abstract::Increasing evidence suggests that immune responses are involved in the control of cancer and that the immune system can be manipulated in different ways to recognize and attack tumors. Progress in immune-based strategies has opened new therapeutic avenues using a number of techniques destined to eliminate malignant ce...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章,评审

    doi:10.1186/1423-0127-16-30

    authors: Matar P,Alaniz L,Rozados V,Aquino JB,Malvicini M,Atorrasagasti C,Gidekel M,Silva M,Scharovsky OG,Mazzolini G

    更新日期:2009-03-06 00:00:00

  • Relevance of retrovirus quantification in cerebrospinal fluid for neurologic diagnosis.

    abstract::Different human retroviruses, such as Human Immunodeficiency Virus (HIV) and Human T-cell Lymphotropic Virus (HTLV), can cause neurologic infection. However, a definitive diagnosis may be hampered by several factors. Quantification of the viral or proviral load in cerebrospinal fluid (CSF) may be helpful in the diagno...

    journal_title:Journal of biomedical science

    pub_type: 杂志文章

    doi:10.1186/s12929-015-0170-y

    authors: Rosadas C,Puccioni-Sohler M

    更新日期:2015-08-08 00:00:00