Abstract：
:A mild surface-labeling procedure was applied to various developmental stages of Schistosoma mansoni. An 18 kDa protein was preferentially labeled in freshly transformed schistosomula. The labeled protein was equally present on skin-penetrated and mechanically prepared schistosomula and it disappeared upon digestion of intact parasites with proteolytic enzymes. The 18 kDa protein could be specifically precipitated with an antiserum raised against 3-h schistosomula. Six-day lung forms also presented a single major labeled protein component, but the apparent molecular weight of this protein in acrylamide gels was higher than 18 000. Fourteen-day-old and adult schistosomes showed only weak labeling distributed in several bands. The radioactivity pattern of adult worms (but not of schistosomula) could also be obtained by incubating fresh parasites in a medium which had previously been used to label schistosomes and to which a 100 000-fold excess of 127I over 125I had been added. Post-labeling incubation of parasites was found to be essential for the detection of stable surface proteins.
journal_name
Mol Biochem Parasitoljournal_title
Molecular and biochemical parasitologyauthors
Liberti P,Festucci A,Ruppel A,Gigante S,Cioli Ddoi
10.1016/0166-6851(86)90050-2subject
Has Abstractpub_date
1986-01-01 00:00:00pages
55-67issue
1eissn
0166-6851issn
1872-9428pii
0166-6851(86)90050-2journal_volume
18pub_type
杂志文章abstract：:Two different classes of small nematode specific lipid-binding proteins, the nematode polyprotein allergens/antigens (NPAs) and the fatty acid- and retinol-binding (FAR) proteins, are secreted by helminth parasites. Until now, there was no evidence of the expression or secretion of these two families of proteins in Ha...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/j.molbiopara.2009.07.001
更新日期：2009-11-01 00:00:00
abstract：:The aspartic protease cathepsin D (Clan AA, Family A1) is expressed in the schistosome gut where it plays an apical role in the digestion of hemoglobin released from ingested erythrocytes. In this report, RNA interference approaches were employed to investigate the effects of knockdown of schistosome cathepsin D. Cult...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/j.molbiopara.2007.10.009
更新日期：2008-02-01 00:00:00
abstract：:Trypanosoma brucei Tim17(TbTim17), the single member of the Tim17/23/22 protein family, is an essential component of the translocase of the mitochondrial inner membrane (TIM). In spite of the conserved secondary structure, the primary sequence of TbTim17, particularly the N-terminal hydrophilic region, is significantl...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/j.molbiopara.2017.09.003
更新日期：2017-12-01 00:00:00
abstract：:The Trypanosoma cruzi insect stage-specific antigen GP72 was purified from epimastigotes and the amino acid sequences of peptide fragments determined. Oligonucleotides derived from these data were used to amplify and clone a cDNA sequence, which was used to isolate a full-length gene. All the sequenced peptides were e...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/0166-6851(91)90129-t
更新日期：1991-11-01 00:00:00
abstract：:Hco-UNC-49 is a GABA receptor from the parasitic nematode Haemonchus contortus that has a relatively low overall sequence similarity to vertebrate GABA receptors but is very similar to the UNC-49 receptor found in the free living nematode Caenorhabditis elegans. While the nematode receptors do share >80% sequence simi...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/j.molbiopara.2011.04.002
更新日期：2011-07-01 00:00:00
abstract：:The major merozoite-piroplasm surface antigen (mMPSA) of Theileria annulata, Tams1, is known to be antigenically diverse. The possession of variable N-linked glycosylation sites and removal of monoclonal antibody 5E1 reactivity by mild periodate treatment suggested, previously, that divergent epitopes may be conferred...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/s0166-6851(02)00078-6
更新日期：2002-06-01 00:00:00
abstract：:Profilins are the key regulators of actin dynamics in all eukaryotic cells. However, little information is available on their biochemical properties and functions in kinetoplastids, such as Trypanosoma and Leishmania. We show here that Leishmania parasites express only one homolog of profilin (LdPfn), which catalyzes ...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/j.molbiopara.2020.111280
更新日期：2020-07-01 00:00:00
abstract：:Procyclic Trypanosoma brucei brucei strain 366D is susceptible to DL-alpha-difluoromethylornithine (DFMO) with an in vitro ED50 value of 225 microM. A mutant of the procyclic strain resistant to 20 mM of DFMO was isolated by serial in vitro passages of the organisms in increasing concentrations of the drug. Drug resis...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/0166-6851(87)90064-8
更新日期：1987-01-02 00:00:00
abstract：:Kinetoplast DNA (kDNA), the mitochondrial DNA of trypanosomes, is a network of thousands of topologically interlocked DNA minicircles and about 50 maxicircles. In this study, we have analysed the kDNA molecules of 6 strains of Trypanosoma evansi from different geographical areas. 2 strains were found to be dyskinetopl...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/0166-6851(91)90203-i
更新日期：1991-05-01 00:00:00
abstract：:Heartworm disease caused by Dirofilaria immitis affects canine and feline hosts. Moreover, the parasite can infect humans, causing pulmonary dirofilariosis. Most affected dogs have patent infections with circulating microfilariae in peripheral blood, although infected dogs sometimes develop occult infections character...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/j.molbiopara.2009.03.005
更新日期：2009-08-01 00:00:00
abstract：:The ADP ribosylation factors (Arfs) are a highly conserved subfamily of the Ras small GTPases with crucial roles in vesicle budding and membrane trafficking. Unlike in other eukaryotes, the orthologue of Arf1 in the host bloodstream form of Trypanosoma brucei is essential for the maintenance of endocytosis. In contras...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/j.molbiopara.2007.06.009
更新日期：2007-10-01 00:00:00
abstract：:Subtilisin-like proteases of malaria parasite Plasmodium falciparum (PfSUB1, 2 and 3) are expressed at late asexual blood stages. PfSUB1 and 2 are considered important drug targets due to their essentiality for parasite blood stages and role in merozoite egress and invasion of erythrocytes. We have earlier shown the i...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/j.molbiopara.2013.09.006
更新日期：2013-10-01 00:00:00
abstract：:Opisthorchis viverrini is the causative agent of human opisthorchiasis in Thailand and long lasting infection with the parasite has been correlated with the development of cholangiocarcinoma. In this work we have molecularly characterized the first member of a protein family carrying two DM9 repeats in this parasite (...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/j.molbiopara.2016.04.002
更新日期：2016-05-01 00:00:00
abstract：:The major proteolytic activity of Trypanosoma cruzi is a cathepsin L-like cysteine protease expressed in all stages of the parasite. As an initial step in identifying possible functions of this enzyme in the life cycle of T. cruzi, and examining its potential as a target for rational drug design, two fluoromethyl keto...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/0166-6851(93)90086-d
更新日期：1993-03-01 00:00:00
abstract：:Eimeria are the causative agents of coccidosis, a disease which is of world wide economic importance in the poultry industry. Immunity resulting from infection is species-specific and both antibody and cell-mediated responses have been implicated. As an initial step in the development of a genetically-engineered vacci...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/0166-6851(87)90071-5
更新日期：1987-01-02 00:00:00
abstract：:Human infections from Plasmodium knowlesi present challenges to malaria control in Southeast Asia. P. knowlesi also offers a model for other human malaria species including Plasmodium vivax. P. knowlesi parasites can be cultivated in the laboratory, and their transformation is standardly performed by direct electropor...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/j.molbiopara.2017.10.001
更新日期：2017-12-01 00:00:00
abstract：:We have investigated the protein and glycoprotein content of Plasmodium falciparum merozoites by metabolically labeling cultures of schizont-stage parasites with [35S]methionine or with [3H]glucosamine followed by incubation in nonradioactive medium to allow the schizonts to mature into merozoites, infect new erythroc...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/0166-6851(84)90030-6
更新日期：1984-03-01 00:00:00
abstract：:Some restriction fragments of kinetoplast minicircles from several trypanosomatid species (Leishmania tarentolae, Trypanosoma brucei, T. equiperdum, Herpetomonas muscarum, Crithidia fasciculata, but not T. cruzi) migrate anomalously on polyacrylamide gels. This behavior is probably due to a natural curvature of the he...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/0166-6851(84)90084-7
更新日期：1984-07-01 00:00:00
abstract：:The heat shock response was studied as a model for control of gene expression and protein synthesis in Giardia lamblia. Cultured trophozoites were metabolically labelled with [35S]methionine, and proteins were analysed by SDS-polyacrylamide gel electrophoresis and fluorography. A temperature shift from 37 degrees C to...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/0166-6851(88)90061-8
更新日期：1988-03-01 00:00:00
abstract：:The surface of the erythrocyte undergoes a number of modifications during infection by Plasmodium falciparum. These modifications are critical for pathogenesis of severe disease and the acquisition of host immunity through their role in interactions between the host and the parasite and in antigenic variation. Our kno...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章,评审
doi：10.1016/s0166-6851(01)00275-4
更新日期：2001-07-01 00:00:00
abstract：:Cytoadherence of infected erythrocytes is a hallmark of Plasmodium falciparum infection and a key determinant in the particular virulence of this species. Infected erythrocytes bind a variety of host receptors but certain adhesion traits are associated with more severe disease. A large, diverse protein family named P....
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/s0166-6851(03)00099-9
更新日期：2003-06-01 00:00:00
abstract：:Nucleotide-sugar transporters (NSTs) transport activated sugars (e.g. UDP-GlcNAc) from the cytosol to the lumen of the endoplasmic reticulum or Golgi apparatus where they are used to make glycoproteins and glycolipids. UDP-Glc is an important component of the N-glycan-dependent quality control (QC) system for protein ...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/j.molbiopara.2008.01.004
更新日期：2008-05-01 00:00:00
abstract：:Actin-related proteins (Arps) constitute a family of eukaryotic cytoskeletal proteins involved in such diverse events as cell motility, cytokinesis, vesicle transport, and chromatin remodelling. Previously, in a study of Plasmodium berghei gene expression in ookinetes and oocysts, we detected stage-specific increased ...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/j.molbiopara.2010.05.008
更新日期：2010-10-01 00:00:00
abstract：:The primary S(1) subsite specificity of a recombinant cysteine proteinase, CPB2.8 Delta CTE, of Leishmania mexicana was investigated in a systematic way using a series of peptides derived from Abz-KLRFSKQ-EDDnp in which Arg was substituted by all natural amino acids (where Abz is ortho-amino-benzoyl and EDDnp is N-[2,...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/s0166-6851(01)00290-0
更新日期：2001-08-01 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
pub_type： 杂志文章
doi：10.1016/0166-6851(92)90188-p
更新日期：1992-12-01 00:00:00
abstract：:Schistosoma mansoni p14 gene encodes an eggshell precursor that is expressed only in vitelline cells of mature female worms in response to a male stimulus. The upstream region of the p14 gene contains several potential cis-acting regulatory sequences. We used the upstream region of the p14 gene as bait in a yeast-one-...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/s0166-6851(00)00292-9
更新日期：2000-10-01 00:00:00
abstract：:The exoglycosidase, beta-N-acetyl-D-hexosaminidase was purified 600-fold from the muscle-stage larvae (L1) of Trichinella spiralis. On sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), the purified enzyme-active fraction contained 4 polypeptides with apparent molecular weights of 100,000, 68,000, 5...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/0166-6851(88)90145-4
更新日期：1988-10-01 00:00:00
abstract：:Babesia bovis, an intraerythrocytic, protozoal parasite of cattle, undergoes clonal antigenic variation (Allred DR, Cinque RM, Lane TJ, Ahrens KP. Infect Immun 1994;62:91-98). This ability could provide a mechanism by which the parasite escapes host immune defenses to establish chronic infection. Previous work identif...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/s0166-6851(97)00125-4
更新日期：1997-11-01 00:00:00
abstract：:We have characterised the organisation of genes encoding the glutamate and alanine rich protein (GARP) surface coat of the procyclic and epimastigote stages of Trypanosoma congolense in the tsetse fly. The GARP genes are arranged at two, possibly physically linked, loci, one of which exhibits allelic variation. One lo...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/s0166-6851(99)00190-5
更新日期：2000-02-05 00:00:00
abstract：:A poly-zinc finger protein, designated PZFP1 was identified in Trypanosoma cruzi for the first time. The protein has 191 amino acids, contains seven motifs Cys(X)(2)Cys(X)(4)His(X)(4)Cys. A recombinant PZFP1 was generated in E. coli and the expected 21kDa polypeptide co-purified with two other inducible products of ab...
journal_title：Molecular and biochemical parasitology
pub_type： 杂志文章
doi：10.1016/s0166-6851(03)00187-7
更新日期：2003-09-01 00:00:00
