1 - 25 of 111
Number of results to display per page
1 Mansour, Suzanne L.Fgf10 is required for specification of non-sensory regions of the cochlear epitheliumThe vertebrate inner ear is a morphologically complex sensory organ comprised of two compartments, the dorsal vestibular apparatus and the ventral cochlear duct, required for motion and sound detection, respectively. Fgf10, in addition to Fgf3, is necessary for the earliest stage of otic placode ind...2014-01-01
2 Thomas, Kirk R.; Capecchi, Mario R.Nonreciprocal exchanges of information between DNA duplexes coinjected into mammalian. cell nucleiWe have examined the mechanism of homologous recombination between plasmid molecules coinjected into cultured mammalian cells. Cell lines containing recombinant DNA molecules were obtained by selecting for the reconstruction of a functional Neor gene from two plasmids that bear different amber mutat...Animals; Cells, Cultured; DNA Restriction Enzymes; Kinetics1985-01
3 Gesteland, Raymond F.; Atkins, John F.Influence of the stacking potential of the base 3' of tandem shift codons on -1 ribosomal frameshifting used for gene expressionTranslating ribosomes can shift reading frame at specific sites with high efficiency for gene expression purposes. The most common type of shift to the 1 frame involves a tandem realignment of two anticodons from pairing with mRNA sequence of the form X XXY YYZ to XXX YYY Z where the spaces indicate...1 frameshifting; 39 context effect; Codon anticodon interaction; Escherichia coli ; Recoding; tRNALys; XXXY YYZ frameshift motifs2002
4 Gesteland, Raymond F.Processing of adenovirus 2-induced proteinsAnalysis of (35)S-methionine-labeled extracts of adenovirus 2-infected KB cells revealed 22 virus-induced polypeptide components. Most proteins of the virion were easily detected in extracts of whole cells labeled for short periods between 15 and 30 h after infection; however, several virion compone...Adenoviridae; Viral Proteins; Protein Precursors; Methionine; Mouth Neoplasms1973
5 Capecchi, Mario R.Fundamental cellular processes do not require vertebrate-specific sequences within the TATA-binding protein.The 180-amino acid core of the TATA-binding protein (TBPcore) is conserved from Archae bacteria to man. Vertebrate TBPs contain, in addition, a large and highly conserved N-terminal region that is not found in other phyla. We have generated a line of mice in which the tbp allele is replaced with a v...Mice, Knockout; Cells, Cultured; Fibroblasts; Embryo2003-02-21
6 Lopansri, Bert; Stoddard, Gregory J.; Hobbs, Maurine R.; Granger, Donald LeeElevated plasma phenylalanine in severe malaria and implications for pathophysiology of neurological complications.Cerebral malaria is associated with decreased production of nitric oxide and decreased levels of its precursor, l-arginine. Abnormal amino acid metabolism may thus be an important factor in malaria pathogenesis. We sought to determine if other amino acid abnormalities are associated with disease sev...Dystonia; Phenylalanine Hydroxylase; Tyrosine2006-06-01
7 Capecchi, Mario R.Hox group 3 paralogous genes act synergistically in the formation of somitic and neural crest-derived structures.Hox genes encode transcription factors that are used to regionalize the mammalian embryo. Analysis of mice carrying targeted mutations in individual and multiple Hox genes is beginning to reveal a complex network of interactions among these closely related genes which is responsible for directing th...Abnormalities, Multiple; Gene Targeting; Glossopharyngeal Nerve; Mice, Knockout; Morphogenesis1997-12-15
8 Capecchi, Mario R.Hox genes and mammalian developmentWe have examined the interactions of Hox genes in forming a cervical vertebrae, hindbrain, and limbs. In each case, it is apparent that individual Hox genes are performing individual functions but that more profound roles are apparent when they act in combination with others Hox genes. The observed ...Drosophila; Gene Expression Regulation, Developmental; Homozygote1997
9 Gesteland, Raymond F.; Baranov, Pavel V.; Atkins, John F.; Hammer, Andrew W.Transcriptional slippage in bacteria: distribution in sequenced genomes and utilization in IS element gene expressionABSTRACT: Background: Transcription slippage occurs on certain patterns of repeat mononucleotides, resulting in synthesis of a heterogeneous population of mRNAs. Individual mRNA molecules within this population differ in the number of nucleotides they contain that are not specified by the templat...Transcription slippage; Bacterial genomes; IS element genes2005
10 Thomas, Kirk R.; Capecchi, Mario R.Location of crossovers during gene targeting with insertion and replacement vectors.Gene targeting was used to introduce nonselectable genetic changes into chromosomal loci in mouse embryo-derived stem cells. The nonselectable markers were linked to a selectable marker in both insertion- and replacement-type vectors, and the transfer of the two elements to the Hprt locus was assaye...Genetic Vectors; Molecular Sequence Data; Restriction Mapping1993-04
11 Capecchi, Mario R.Altered enzymes in drug-resistant variants of mammalian tissue culture cells.Two selective procedures are compared in an effort to isolate variants of mouse L cells containing structural gene mutations. Among the resulting variant cloned cell lines are found two types of alterations in theenzyme hypoxanthine phosphoribosyl transferase (EC (1): enzyme with altered ...Drug Resistance; Azaguanine; Clone Cells; Hypoxanthines1973-11
12 Gussin, Gary N.; Capecchi, Mario R.Protein synthesis directed by DNA phage messengers.Even through the amino acids corresponding to most of the 64 nucleotide triplets are now known, several important aspects of the genetic code are not yet fully understood. In particular we need more knowledge about the "punctuation marks" of the code-for example, the signals necessary for the initia...Carbon Isotopes; Escherichia coli; Genetic Code; Methionine1967-09-01
13 Rogers, Alan R.; Jorde, Lynn B.Origins and affinities of modern humans: a comparison of mitochondrial and nuclear genetic dataTo test hypotheses about the origin of modern humans, we analyzed mtDNA sequences, 30 nuclear restriction-site polymorphisms (RSPs), and 30 tetranucleotide short tandem repeat (STR) polymorphisms in 243 Africans, Asians, and Europeans. An evolutionary tree based on mtDNA displays deep African branch...Base Sequence; Variation (Genetics); Base Sequence1995
14 Capecchi, Mario R.Developmental defects of the ear, cranial nerves and hindbrain resulting from targeted disruption of the mouse homeobox gene Hox-1.6.Gene targeting in mouse embryo-derived stem cells has been used to generate mice with a disruption in the homeobox gene Hox-1.6. Mice heterozygous at the Hox-1.6 locus appear normal, whereas Hox-1.6-/Hox-1.6- mice die at or shortly after birth. These homozygotes exhibit profound defects in the forma...Chromosome Mapping; Genetic Vectors; Mice, Inbred C57BL2002-06-27
15 Capecchi, Mario R.Regionally restricted developmental defects resulting from targeted disruption of the mouse homeobox gene hox-1.5.Gene targeting in mouse embryo-derived stem cells has been used to disrupt the homeobox gene hox-1.5. Mice heterozygous at the hox-1.5 locus appear normal, whereas hox-1.5-/hox-1.5- mice die at or shortly after birth. These homozygotes are athymic, aparathyroid, have reduced thyroid and submaxillary...Abnormalities, Multiple; Animals, Newborn; Arteries; Bone and Bones; Cartilage; Esophagus; Gene Expression; Heart Defects, Congenital; Organ Specificity; Parathyroid Glands; Pharynx; Thymus Gland; Thyroid Gland; Trachea1991-04-11
16 Capecchi, Mario R.Measurement of suppressor transfer RNA activity.Transfer RNA (tRNA) suppression of nonsense mutations in prokaryotic systems has been widely used to study the structure and function of different prokaryotic genes. Through genetic engineering techniques, it is now possible to introduce suppressor (Su+) tRNA molecules into mammalian cells. A quanti...Animals; Cells, Cultured; Eukaryotic Cells; Genes, Viral; Mice; Orthomyxoviridae; Peptide Chain Termination, Translational; Protein Biosynthesis1983-08-26
17 Hansen, Mark S.; Coffin, Cheryl M.; Capecchi, Mario R.Pax3:Fkhr interferes with embryonic Pax3 and Pax7 function: implications for alveolar rhabdomyosarcoma cell of origin.To investigate the role of the translocation-associated gene Pax3:Fkhr in alveolar rhabdomyosarcomas, we generated a Cre-mediated conditional knock-in of Pax3:Fkhr into the mouse Pax3 locus. Exploring embryonic tumor cell origins, we replaced a Pax3 allele with Pax3:Fkhr throughout its expression do...Neuroprogenitor; Embryogenesis2004-11-01
18 Capecchi, Mario R.Male fertility is dependent on dipeptidase activity of testis ACE.Testis angiotensin-converting enzyme (ACE) is an isozyme exclusively expressed by developing sperm. This protein has only a single catalytic domain containing the HEXXH consensus-site motif typical of zinc metallopeptidases. The exact role of testis ACE is unknown, but male mice lacking the protein ...Amino Acid Motifs; Blotting, Western; Catalytic Domain; Comparative Study; Isoenzymes; Protein Structure, Tertiary2005-11-11
19 Capecchi, Mario R.Choose your target.The technology of modifying endogenous genes has recently been extended from mice to Drosophila and sheep. Concurrently, genomic sequencing is uncovering thousands of previously uncharacterized genes. Armed with today's technologies, what are our best options for delineating the functions of these n...Animals; Mice; Sheep2000-09-13
20 Gesteland, Raymond F.; Wills, Norma M.; Atkins, John F.Comparative studies of frameshifting and nonframeshifting RNA pseudoknots: a mutational and NMR investigation of pseudoknots derived from the bacteriophage T2 gene 32 mRNA and the retroviral gag-pro frameshift siteMutational and NMR methods were used to investigate features of sequence, structure, and dynamics that are associated with the ability of a pseudoknot to stimulate a "1 frameshift. In vitro frameshift assays were performed on retroviral gag-pro frameshift-stimulating pseudoknots and their derivati...Frameshifting; NMR; Pseudoknot; Retrovirus2002
21 Thomas, Kirk R.; Capecchi, Mario R.Maintenance of functional equivalence during paralogous Hox gene evolution.Biological diversity is driven mainly by gene duplication followed by mutation and selection. This divergence in either regulatory or protein-coding sequences can result in quite different biological functions for even closely related genes. This concept is exemplified by the mammalian Hox gene comp...Alleles; Animals; Cervical Vertebrae; Embryo; Genetic Complementation Test; Homeodomain Proteins; Homozygote; Mice2000-02-10
22 Capecchi, Mario R.Characterization of three proteins involved in polypeptide chain termination.At each stage of elongation, the growing polypeptide chain is bound to the ribosome-messenger RNA complex through the transfer RNA of the most recently incorporated amino acid residue. When the chain is complete, the last polypeptide-transfer RNA (tuna) ester linkage is cleaved, releasing the chain ...Anti-Bacterial Agents; Phenylalanine; Stimulation, Chemical1969
23 Thomas, Kirk R.; Capecchi, Mario R.High-fidelity gene targeting in embryonic stem cells by using sequence replacement vectors.Mutations were targeted to the Hprt locus in murine embryonic stem cells by using sequence replacement vectors. When the vector was designed such that the mutated sequences were flanked on both sides by several kilobases of DNA homologous to the target locus, replacement of chromosomal sequences wit...Drug Resistance; Gene Rearrangement; Gentamicins1992-07
24 Capecchi, Mario R.Expression of a microinjected porcine class I major histocompatibility complex gene in transgenic mice.A porcine class I major histocompatibility complex (SLA) gene has been introduced into the genome of a C57BL/10 mouse. This transgenic mouse expressed SLA antigen on its cell surfaces and transmitted the gene to offspring, in which the gene is also expressed. Skin grafts of such transgenic mice were...Genetic Engineering; Graft Rejection; Mice, Inbred C57BL1985-05-03
25 Capecchi, Mario R.Patterns of integration of DNA microinjected into cultured mammalian cells: evidence for homologous recombination between injected plasmid DNA molecules.We examined the fate of DNA microinjected into nuclei of cultured mammalian cells. The sequence composition and the physical form of the vector carrying the selectable gene affected the efficiency of DNA-mediated transformation. Introduction of sequences near the simian virus 40 origin of DNA replic...Base Sequence; Cell Line; Genes, Viral; Genetic Vectors; Mice; Microinjections1982-11
1 - 25 of 111