Insertion of the promoter for a variant surface glycoprotein gene expression site in an RNA polymerase II transcription unit of procyclic Trypanosoma brucei.

abstract：:The scarcity of molecular tools for genetic manipulation is a critical obstacle for functional genomics studies on Trypanosoma cruzi. The current study adapted an inducible site-specific recombination system based on Dimerizable CRE recombinase (DiCRE). Two vectors for stable transfection were created, a first one to ...

journal_title：Molecular and biochemical parasitology

authors： Kangussu-Marcolino MM,Cunha AP,Avila AR,Herman JP,DaRocha WD

更新日期：2014-12-01 00:00:00

abstract：:Protozoan parasites of the genus Leishmania have a digenetic lifecycle, alternating between the promastigote and amastigote stages. The extracellular promastigote resides within a sandfly vector, while the obligate intracellular amastigote stage replicates in the phagolysosome of mammalian host macrophages. Adaptation...

journal_title：Molecular and biochemical parasitology

authors： Murray A,Fu C,Habibi G,McMaster WR

更新日期：2007-06-01 00:00:00

abstract：:A membrane-bound sialidase (EC 3.2.1.18) was found in procyclic trypomastigotes of Trypanosoma brucei. The mammalian stage bloodstream form, however, displayed no sialidase activity. This sialidase is an integral surface protein, linked to the membrane via a glycosylphosphatidylinositol anchor. After osmotic lysis and...

journal_title：Molecular and biochemical parasitology

authors： Engstler M,Reuter G,Schauer R

更新日期：1992-08-01 00:00:00

abstract：:[14C]Artemisinin was taken up by Plasmodium falciparum in culture and concentrated in hemozoin. In vitro, hemin and artemisinin were found to undergo a chemical reaction forming two major products which were isolated by high-performance liquid chromatography (HPLC). The m/z values of the two products were 856 and 871....

journal_title：Molecular and biochemical parasitology

authors： Hong YL,Yang YZ,Meshnick SR

更新日期：1994-01-01 00:00:00

abstract：:Thrombospondin-related anonymous protein (TRAP) family members participate in attachment and invasion of host cells by apicomplexan parasites. A TRAP homologue in Neospora caninum strain Nc-1 (NcMIC2) was cloned, sequenced and found to be 61% identical (75% similar) at the amino acid level to Toxoplasma gondii MIC2 (T...

journal_title：Molecular and biochemical parasitology

authors： Lovett JL,Howe DK,Sibley LD

更新日期：2000-03-15 00:00:00

abstract：:Schistosomiasis is an intravascular parasitic infection estimated to affect over 206 million people, the majority of whom live in Africa where the trematode worms Schistosoma mansoni and Schistosoma haematobium are the major causative agents. While a number of drugs have been used to treat schistosomiasis, praziquante...

journal_title：Molecular and biochemical parasitology

authors： Sanchez MC,Cupit PM,Bu L,Cunningham C

更新日期：2019-03-01 00:00:00

abstract：:The promastigote surface antigen 2 (PSA-2) complex comprises a family of antigenically similar polypeptides of M(r) 96,000, 80,000 and 50,000, anchored to the membrane with glycosylphosphatidylinositol. Although PSA-2 was initially detected only in promastigotes, Northern blot analysis indicated that mRNA transcripts ...

journal_title：Molecular and biochemical parasitology

authors： Handman E,Osborn AH,Symons F,van Driel R,Cappai R

更新日期：1995-11-01 00:00:00

abstract：:We have purified and characterized the Ascaris suum gamma-glutamylcysteine synthetase, the rate-limiting step in the glutathione biosynthesis. The purified enzyme exhibited a specific activity of 18 U (mg protein)-1. Estimation of the molecular mass of the native enzyme by FPLC on Superdex S-200 revealed the presence ...

journal_title：Molecular and biochemical parasitology

authors： Hussein AS,Walter RD

更新日期：1995-06-01 00:00:00

abstract：:Natural antisense transcripts (NATs) are non-protein coding RNAs that could play an important role in regulating the expression of their counterpart protein encoding sense transcript. Although NATs are widespread in most eukaryotic genomes, very little is known about their functions. This study focuses on gaining a be...

journal_title：Molecular and biochemical parasitology

authors： Fahim A,Afrin F,Wen G,Ananvoranich S

更新日期：2020-11-01 00:00:00

abstract：:Schistosomes have a complex life cycle (vertebrate and molluscan hosts as well as larvae living freely in water) in which they are exposed to different environments and temperatures (20 degrees C - 37 degrees C). Since heat shock genes are activated in response to stress and during development [1], it is of interest t...

journal_title：Molecular and biochemical parasitology

authors： Neumann S,Ziv E,Lantner F,Schechter I

更新日期：1992-12-01 00:00:00

abstract：:The ADHE family of enzymes are bifunctional acetaldehyde dehydrogenase (ALDH)/alcohol dehydrogenase (ADH) enzymes that probably arose from the fusion of genes encoding separate ALDH and ADH enzymes. Here we have used the Entamoeba histolytica alcohol dehydrogenase 2 (EhADH2) enzyme as a prototype to analyze the struct...

journal_title：Molecular and biochemical parasitology

authors： Chen M,Li E,Stanley SL Jr

更新日期：2004-10-01 00:00:00

abstract：:Cryptosporidium spp. are waterborne apicomplexan parasites responsible for outbreaks of diarrheal disease worldwide. Antigens involved in zoite invasion into host cells have been the focus of many investigations as these may prove to be good vaccine candidates. gp40/15 is a zoite antigen synthesized as a precursor pro...

journal_title：Molecular and biochemical parasitology

authors： O'Connor RM,Wanyiri JW,Cevallos AM,Priest JW,Ward HD

更新日期：2007-11-01 00:00:00

abstract：:Gene expression and its regulation was studied in the rat tapeworm, Hymenolepis diminuta, during strobilization. RNAs extracted from the different developmental stages of the parasite were translated in vitro in a rabbit reticulocyte lysate system. Two-dimensional patterns of the translational products were compared w...

journal_title：Molecular and biochemical parasitology

authors： Siddiqui AA,Karcz SR,Podesta RB

更新日期：1987-08-01 00:00:00

abstract：:Translation initiation factor eIF4F is essential for cap-dependent translation initiation in eukaryotes. eIF4F is a trimeric complex consisting of a scaffold protein eIF4G, cap-binding protein eIF4E and DEAD-box RNA helicase eIF4A. eIF4F binds to the 5' cap structure of the mRNA through eIF4E and facilitates the bindi...

journal_title：Molecular and biochemical parasitology

authors： Adedoja AN,McMahan T,Neal JP,Hamal Dhakal S,Jois S,Romo D,Hull K,Garlapati S

更新日期：2020-03-01 00:00:00

abstract：:The separation by chromatofocusing of two distinct purine nucleoside cleaving activities from crude extracts of Trypanosoma brucei brucei is described. One catalyzes the reversible phosphorolysis of 5'-deoxy-5'-methylthioadenosine (MeSAdo) and adenosine (Ado) and was designated an MeSAdo/Ado phosphorylase, while the o...

journal_title：Molecular and biochemical parasitology

authors： Ghoda LY,Savarese TM,Northup CH,Parks RE Jr,Garofalo J,Katz L,Ellenbogen BB,Bacchi CJ

更新日期：1988-01-15 00:00:00

abstract：:Congopain and cruzipain, the major cysteine proteinases from Trypanosoma congolense and Trypanosoma cruzi, were compared for their activities towards a series of new, sensitive fluorogenic substrates of the papain family of cysteine proteinases and for their sensitivity to inhibition by cystatins and related biotinyla...

journal_title：Molecular and biochemical parasitology

authors： Chagas JR,Authie E,Serveau C,Lalmanach G,Juliano L,Gauthier F

更新日期：1997-09-01 00:00:00

abstract：:Two proteins were previously described in the excretory-secretory products (ES) collected from Dirofilaria immitis during the molt from the third stage to the fourth stage in vitro. The two proteins were purified using cation exchange and reverse phase HPLC. During the purification of these two proteins, a third prote...

journal_title：Molecular and biochemical parasitology

authors： Frank GR,Grieve RB

更新日期：1996-01-01 00:00:00

abstract：:Antisera from lambs immunised with the Haemonchus contortus integral membrane protein complex, Haemonchus galactose-containing glycoprotein (H-gal-GP), the lambs being refractory to subsequent challenge, were used to identify several clones from an adult H. contortus lambda gt11 cDNA library. Using gene-specific oligo...

journal_title：Molecular and biochemical parasitology

authors： Redmond DL,Knox DP,Newlands G,Smith WD

更新日期：1997-03-01 00:00:00

abstract：:Cloning by limit dilution of an isolate of Leishmania tropica (LRC-L137) that is infective for mice resulted in 7 stable clones, only one of which was infective in BALB/c mice. Three of the non-infective clones that were examined for survival in BALB/c macrophages in vitro seemed to be killed more readily, suggesting ...

journal_title：Molecular and biochemical parasitology

authors： Handman E,Hocking RE,Mitchell GF,Spithill TW

更新日期：1983-02-01 00:00:00

abstract：:The glycosylphosphatidylinositol (GPI)-anchored variant surface glycoprotein (VSG) of Trypanosoma brucei is the most abundant GPI-anchored protein expressed on any cell, and is an essential virulence factor. To determine what structural features affect efficient expression of VSG, we made a series of mutations in two ...

journal_title：Molecular and biochemical parasitology

authors： Wang J,Böhme U,Cross GA

更新日期：2003-05-01 00:00:00

abstract：:Glycosomes are peroxisome-like organelles present in trypanosomatid pathogens. These organelles compartmentalize glycolysis, among other reactions, and are essential in both bloodstream and procyclic form Trypanosoma brucei. Peroxins (PEXs) are proteins necessary for biogenesis of peroxisomes and glycosomes. In each a...

journal_title：Molecular and biochemical parasitology

authors： Banerjee SK,Kessler PS,Saveria T,Parsons M

更新日期：2005-07-01 00:00:00

abstract：:The identification and characterization of a recombinant cDNA clone, designated OV9M, expressing an antigen present in Onchocerca volvulus infective larvae and adult stages is described. Clone OV9M was identified by screening a lambda gt11 cDNA expression library derived from adult O. volvulus mRNA using pooled rabbit...

journal_title：Molecular and biochemical parasitology

authors： Irvine M,Huima T,Prince AM,Lustigman S

更新日期：1994-05-01 00:00:00

abstract：:The capability of synthesizing fatty acids de novo in the meront stage of the oyster protozoan parasite, Perkinsus marinus, was investigated employing stable-isotope-labeled precursors (1,2 13C-acetate and palmitic-d(31) acid). Fatty acid methyl esters derived from 1,2 13C-acetate and palmitic-d(31) acid were analyzed...

journal_title：Molecular and biochemical parasitology

authors： Chu FL,Lund E,Soudant P,Harvey E

更新日期：2002-02-01 00:00:00

abstract：:Sequestration of Plasmodium falciparum infected erythrocytes in the cerebral circulation is strongly implicated in the pathogenesis of cerebral malaria. From previous studies it was postulated that genes essential for cytoadherence were located on the right arm of chromosome 9 as P. falciparum isolates with a deletion...

journal_title：Molecular and biochemical parasitology

authors： Chaiyaroj SC,Coppel RL,Magowan C,Brown GV

更新日期：1994-09-01 00:00:00

abstract：:The merozoite surface protein-1 of the human malaria parasite Plasmodium falciparum undergoes an extracellular proteolytic cleavage (secondary processing) intrinsic to successful erythrocyte invasion. In the T9/96 clone of P. falciparum the protease responsible has been characterised as a membrane-associated, calcium-...

journal_title：Molecular and biochemical parasitology

authors： Blackman MJ,Chappel JA,Shai S,Holder AA

更新日期：1993-11-01 00:00:00

abstract：:The pfmdr 1 gene encodes a Plasmodium falciparum homologue of the human P-glycoprotein expressed on the surface of the parasite food vacuole. Variation in copy number and specific codon mutations of pfmdr 1 have been implicated in the development of parasite resistance to antimalarial drugs. We describe here the techn...

journal_title：Molecular and biochemical parasitology

authors： Price R,Robinson G,Brockman A,Cowman A,Krishna S

更新日期：1997-04-01 00:00:00

abstract：:The livers of chickens maintained on a diet containing an effective in vivo level (70 ppm) of arprinocid, an anticoccidial agent, were found to contain 0.64 ppm of this drug and 0.33 ppm of a metabolite, arprinocid-1-N-oxide. When arprinocid was tested against Eimeria tenella in cultures of chick kidney epithelial cel...

journal_title：Molecular and biochemical parasitology

authors： Wang CC,Simashkevich PM

更新日期：1980-10-01 00:00:00

abstract：:The steady-state level of the hsp70 mRNAs of Trypanosoma cruzi cultured at different temperatures and growth conditions has been analyzed by Northern blotting. We show that only one size class of hsp70 mRNA, of about 2.2 kb, is transcribed from the hsp70 cluster and that its transcription is constitutive at 28 degrees...

journal_title：Molecular and biochemical parasitology

authors： Requena JM,Jimenez-Ruiz A,Soto M,Assiego R,Santarén JF,Lopez MC,Patarroyo ME,Alonso C

更新日期：1992-07-01 00:00:00

abstract：:Tropomyosins are a family of actin-binding proteins with diverse roles in actin filament function. One of the best characterized roles is the regulation of muscle contraction. Tropomyosin isoforms can be generated from different genes, and from alternative promoters and alternative splicing from the same gene. In this...

journal_title：Molecular and biochemical parasitology

authors： Koziol U,Costábile A,Domínguez MF,Iriarte A,Alvite G,Kun A,Castillo E

更新日期：2011-02-01 00:00:00

abstract：:Asexual intraerythrocytic Plasmodium falciparum were shown to have a single isoenzyme of malate dehydrogenase. This malate dehydrogenase was purified to apparent homogeneity using a three-step purification protocol. The parasite malate dehydrogenase had an apparent subunit molecular weight of 32 kDa, a pH optimum of 7...

journal_title：Molecular and biochemical parasitology

authors： Lang-Unnasch N

更新日期：1992-01-01 00:00:00