1,094 Result(s)

Article

Suppression of the lexC (ssbA) mutation of Escherichia coli by a mutant of bacteriophage P1

A new mutant of bacteriophage P1 designated lxc that suppresses the phenotype of lexC and ssbA mutants of Escherichia coli was isolated and characterized. The properties of lexC mutants suppressed by the lxc muta...

Ben F. Johnson in Molecular and General Genetics MGG (1982)

Article

Ovarian development in 46,XY gonadal dysgenesis

In human the XY ovary is degenerative, there being scant evidence of persistence of that organ beyond the perinatal period. Here we describe indications of functional ovarian tissue in a 17-year-old female wit...

Marcia H. Russell, Stephen S. Wachtel, Ben W. Davis, Linda T. Cahill… in Human Genetics (1982)

Article

Teratogenicity of bromocryptine in pregnant rats

The teratogenicity of bromocryptine (CB-154, Sandoz, Basel) was studied in three groups of pregnant rats which received 0.625 mg/kg/day, 1.25 mg/kg/day, and 2.5 mg/kg/day bromocryptine, respectively, i.m. and ...

D. Weinstein, D. Ben-Amitay, J. G. Schenker, A. Ornoy… in Archives of gynecology (1982)

Article

Thermal activation of hexosaminidase A in a genetic compound with Tay-Sachs disease

Increase in total hexosaminidase activity has been observed during heat treatment of serum and leukocyte specimens from a 1-year-old boy with cherry-red spot and severe and progressive mental and motor deterio...

Y. Ben-Yoseph, M. S. Baylerian, T. Momoi… in Journal of Inherited Metabolic Disease (1983)

Article

Analyse génétique de sacB, gène de structure d'une enzyme secrétée, la lévane-saccharase de Bacillus subtilis Marburg

The structural gene sacB encoding B. subtilis levansucrase, a secreted enzyme, expresses in E. coli. E. coli hosts of the sacB gene are poisoned by sucrose. This property allowed a powerful selection of mutants a...

Michel Steinmetz, Dominique Le Coq, Hajer Ben Djemia… in Molecular and General Genetics MGG (1983)

Article

Mode of organization of lipid aggregates: A conformational analysis

A computational approach is used to predict the mode of organization of lipid molecules. The calculated aggregate states are fully compatible with the lipid phase preference: bilayers for dipalmitoylphosphatid...

Robert Brasseur, Ben de Kruijff, Jean-Marie Ruysschaert in Bioscience Reports (1984)

Article

Cloning of phoM, a gene involved in regulation of the synthesis of phosphate limitation inducible proteins in Escherichia coli K12

Like the synthesis of alkaline phosphatase, the synthesis of outer membrane PhoE protein is shown to be dependent on the phoM gene product in phoR mutants of E. coli K12. This phoM gene has been cloned into the m...

Jan Tommassen, Pieter Hiemstra, Piet Overduin… in Molecular and General Genetics MGG (1984)

Article

Gene encoding a hybrid OmpF-PhoE pore protein in the outer membrane of Escherichia coli K12

To study the structure-function relationship of outer membrane pore proteins of E. coli K12, a hybrid gene was constructed in which the DNA encoding amino acid residues 2–73 of the mature PhoE protein is replaced...

Jan Tommassen, Anthony P. Pugsley, Jaap Korteland… in Molecular and General Genetics MGG (1984)

Article

An Ia-positive mouse T-cell clone is functional in presenting antigen to other T cells

In this report we present data demonstrating the endogenous expression of I-region associated (la) antigens on a cloned line of mouse T cells, CTLL, as well as transcription of the invariant chain gene in thes...

Avraham Ben-Nun, William Strauss, Sara A. Leeman, Lauren E. Cohn… in Immunogenetics (1985)

Article

Characteristics of site variation among clones of the 340-base pair, tandemly repeated EcoR1 family of human DNA

Twenty-four clones of EcoR1-restricted, 340-base pair (bp) DNA derived from human DNA have been sequenced and compared to a published consensus sequence for this family. No two clones were found to have identical...

N. Burr Furlong, Koenraad Marien, Ben Flook, Jim White in Biochemical Genetics (1986)

Article

Integration of vector-containing Bacillus subtilis chromosomal DNA by a Campbell-like mechanism

Using plasmid pHV60, which contains a chloramphenicol resistance (Cm^r) gene that is expressed in Bacillus subtilis, a set of transformation-deficient strains of B. subtilis was isolated by insertional mutagenesis...

Ben Vosman, Jan Kooistra, Jos Olijve, Gerard Venema in Molecular and General Genetics MGG (1986)

Article

Phospholipids as a possible instrument for translocation of nascent proteins across biological membranes

The interaction of phospholipids with precursor proteins, particularly with the mitochondrial precursor protein apocytochromec is reviewed and integrated with other aspects of protein insertion and translocation,...

Annie Rietveld, Ben de Kruijff in Bioscience Reports (1986)

Article

Centromeric DNA from Saccharomyces uvarum is functional in Saccharomyces cerevisiae

Previous comparisons of centromeric DNA sequences in laboratory strains of Saccharomyces cerevisiae have revealed conserved sequences within 120 base pairs (bp) which appear to be essential for centromere functio...

Joel A. Huberman, R. David Pridmore, Daniel Jäger, Ben Zonneveld… in Chromosoma (1986)

Article

Relationship of human oocyte maturity, fertilization, and cleavage to follicular fluid prolactin and steroids

Follicular fluid (FF) levels of prolactin (PRL), estradiol (E₂), progesterone (P), and androstenedione (Δ⁴A) were related to diversities in oocyte maturation, fertilization, and cleavage among oocytes obtained fo...

Mawsheng Lee, Zion Ben-Rafael, Frank Meloni… in Journal of in Vitro Fertilization and Embr… (1987)

Article

Ovum pickup for in vitro fertilization: A cause of mechanical infertility?

Jack Ashkenazi, Dov Feldberg… in Journal of in Vitro Fertilization and Embr… (1987)

Article

Abdominal complications following ultrasonically guided percutaneous transvesical collection of oocytes for in vitro fertilization

Ultrasonically guided transvesical oocyte aspiration is a safe and efficient method in most in vitro fertilization (IVF) units. It entails very rare severe complications, even though transvesical punctures per...

Jack Ashkenazi, Mordechai Ben David… in Journal of in Vitro Fertilization and Embr… (1987)

Article

Structural plasmid instability in Bacillus subtilis: Effect of direct and inverted repeats

Using precise excision as a model system, we have quantified the effect of direct repeats, inverted repeats and the size of the spacer between the repeats in the process of deletion formation in Bacillus subtilis

Ben P. H. Peeters, Jan H. de Boer, Sierd Bron… in Molecular and General Genetics MGG (1988)

Chapter

Restriction Fragment Length Polymorphism of HLA-DR7 Alleles and Association with HLA-B Antigens

Although HLA-DR7 appears to be serologically homo- 2. geneous (1), it may be split according to epitopes recognized by T cells (Dw7, Dwl1) and is normally found in association with either DQw2 or DQw3. This re...

Elizabeth A. Bidwell, Jeffrey L. Bidwell, Trevor J. Jones… in Immunobiology of HLA (1989)

Chapter

Identification of Dw2, Dw12, and “Short” DR2 Splits with Sequential Exon-Specific DRβ, DQβ, and DQα cDNA Probes

The HLA-DR2 specificity has been divided by alloantisera (DR2 and “short” DR2) and by T cells (Dw2, Dw12, DB9 (LD-5a), FJO, and LD-MN2). The FJO and LD-MN2 splits appear to correlate with the short DR2 serotyp...

Jeffrey L. Bidwell, Elizabeth A. Bidwell, David A. Savage… in Immunobiology of HLA (1989)

Article

Novel class of nuclear genes involved in both mRNA splicing and protein synthesis in Saccharomyces cerevisiae mitochondria

We have cloned three distinct nuclear genes, NAM1, NAM7, and NAM8, which alleviate mitochondrial intron mutations of the cytochrome b and COXI (subunit I of cytochrome oxidase) genes when present on multicopy pla...

Edna Ben Asher, Olga Groudinsky, Geneviève Dujardin… in Molecular and General Genetics MGG (1989)