Are there ecological limits to population?

Retrovirus variation and reverse transcription: abnormal strand transfers result in retrovirus genetic variation.

Discrete and integral fourier transforms: analytical examples.

"Diversomers": an approach to nonpeptide, nonoligomeric chemical diversity.

E2F-1-mediated transactivation is inhibited by complex formation with the retinoblastoma susceptibility gene product.

Dominant lethality by expression of a catalytically inactive class I tRNA synthetase.

Folding pathway mediated by an intramolecular chaperone.

Reconstitution of retinoid X receptor function and combinatorial regulation of other nuclear hormone receptors in the yeast Saccharomyces cerevisiae.

Properties and purification of an active biotinylated lactose permease from Escherichia coli.

The 64-kDa protein that associates with the platelet-derived growth factor receptor beta subunit via Tyr-1009 is the SH2-containing phosphotyrosine phosphatase Syp.

Interferon alpha induces protein kinase C-epsilon (PKC-epsilon) gene expression and a 4.7-kb PKC-epsilon-related transcript.

Alloantibodies can discriminate class I major histocompatibility complex molecules associated with various endogenous peptides.

Human immunodeficiency virus type 1 (HIV-1) strains selected for resistance against the HIV-1-specific [2',5'-bis-O-(tert-butyldimethylsilyl)-3'-spiro- 5''-(4''-amino-1'',2''-oxathiole-2'',2''-dioxide)]-beta-D-pentofurano syl (TSAO) nucleoside analogues retain sensitivity to HIV-1-specific nonnucleoside inhibitors.

Ethanol selectively blocks a noninactivating K+ current expressed in Xenopus oocytes.

hP1.B, a human P-domain peptide homologous with rat intestinal trefoil factor, is expressed also in the ulcer-associated cell lineage and the uterus.

Composite, large spirochetes from microbial mats: spirochete structure review.

Mutations at two distinct sites within the channel domain M2 alter calcium permeability of neuronal alpha 7 nicotinic receptor.

Noninactivating, tetrodotoxin-sensitive Na+ conductance in rat optic nerve axons.

Chlamydomonas mutants affected in the light-dependent step of sexual differentiation.

Calsequestrinlike calcium-binding protein is expressed in calcium-accumulating cells of Pistia stratiotes.

Hammerhead ribozymes: importance of stem-loop II for activity.

Determination of the phylogenetic relationships among Pacific salmonids by using short interspersed elements (SINEs) as temporal landmarks of evolution.

Inhibition of T-cell reactivity to myasthenogenic epitopes of the human acetylcholine receptor by synthetic analogs.

The cAMP-response-element-binding protein interacts, but Fos protein does not interact, with the proenkephalin enhancer in rat striatum.

Genetic fusion of subunits of a dimeric protein substantially enhances its stability and rate of folding.

Structure of a human rhinovirus-bivalently bound antibody complex: implications for viral neutralization and antibody flexibility.

Regional cerebral glucose metabolism in late-life depression and Alzheimer disease: a preliminary positron emission tomography study.

Regression of established macroscopic liver metastases after in situ transduction of a suicide gene.

Guanosine pentaphosphate phosphohydrolase of Escherichia coli is a long-chain exopolyphosphatase.

Stabilization and ribosome association of unspliced pre-mRNAs in a yeast upf1- mutant.

Expression of transduced tropomyosin 1 cDNA suppresses neoplastic growth of cells transformed by the ras oncogene.

Identification of four murine cDNAs encoding putative protein kinases from primitive embryonic stem cells differentiated in vitro.

Duplication of the CD8 beta-chain gene as a marker of the man-gorilla-chimpanzee clade.

Interleukin 1 induction of the c-jun promoter.

Integrin alpha IIb beta 3 mediates binding of the Lyme disease agent Borrelia burgdorferi to human platelets.

Reproductive failure of dominant males in the poeciliid fish Limia perugiae determined by DNA fingerprinting.

Molecular cloning of the human kidney differentiation antigen gp160: human aminopeptidase A.

Heat-shock protein hsp90 governs the activity of pp60v-src kinase.

Habitat-dependent hybrid parentage and differential introgression between neighboringly sympatric Daphnia species.

Identification and characterization of the Escherichia coli gene dsbB, whose product is involved in the formation of disulfide bonds in vivo.

Broad-spectrum virus resistance in transgenic plants expressing pokeweed antiviral protein.

Dominant transposition-deficient mutants of maize Activator (Ac) transposase.

Beta 2-integrin LFA-1 signaling through phospholipase C-gamma 1 activation.

Corticotropin-releasing factor mRNA in rat thymus and spleen.

Dror, a potential neurotrophic receptor gene, encodes a Drosophila homolog of the vertebrate Ror family of Trk-related receptor tyrosine kinases.

Reduced Mg2+ block of N-methyl-D-aspartate receptor-mediated synaptic potentials in developing visual cortex.

An erythromycin analog produced by reprogramming of polyketide synthesis.

Single core polypeptide in the reaction center of the photosynthetic bacterium Heliobacillus mobilis: structural implications and relations to other photosystems.

Identification, cloning, and nucleotide sequencing of the ornithine decarboxylase antizyme gene of Escherichia coli.

Early evolution of photosynthesis: clues from nitrogenase and chlorophyll iron proteins.

A base-pairing interaction between U2 and U6 small nuclear RNAs occurs in > 150S complexes in HeLa cell extracts: implications for the spliceosome assembly pathway.

Molecular cloning and sequencing of a canine tracheobronchial mucin cDNA containing a cysteine-rich domain.

The discriminator base influences tRNA structure at the end of the acceptor stem and possibly its interaction with proteins.

A dominant negative retinoic acid receptor blocks neutrophil differentiation at the promyelocyte stage.

Binding to heparan sulfate or heparin enhances neutrophil responses to interleukin 8.

L-glutamate may be the fast excitatory transmitter of Aplysia sensory neurons.

Metabotropic glutamate receptors trigger postsynaptic protein synthesis.

Identification of an isoform of the estrogen receptor messenger RNA lacking exon four and present in the brain.

Covariation of mutations in the V3 loop of human immunodeficiency virus type 1 envelope protein: an information theoretic analysis.

Hepsin, a putative cell-surface serine protease, is required for mammalian cell growth.

Inhibition of RNA polymerase II transcription by oligonucleotide-RecA protein filaments targeted to promoter sequences.

A perspective into ligand-receptor affinities using complex numbers.

Engineering of stable and fast-folding sequences of model proteins.

Isolation of x-ray-inducible transcripts from radioresistant human melanoma cells.

Sequential insertion of Alu family repeats into specific genomic sites of higher primates.

Integration of gene maps: chromosome 21.

Mutations in the alpha subunit of eukaryotic translation initiation factor 2 (eIF-2 alpha) that overcome the inhibitory effect of eIF-2 alpha phosphorylation on translation initiation.

Identification of a precursor genomic segment that provided a sequence unique to glycophorin B and E genes.

High postnatal lethality and testis degeneration in retinoic acid receptor alpha mutant mice.

Reversal of muscle differentiation during urodele limb regeneration.

Target-derived influences on axon growth modes in cultures of trigeminal neurons.

Nitric oxide activates cyclooxygenase enzymes.

The 31-kDa precursor of interleukin 1 alpha is myristoylated on specific lysines within the 16-kDa N-terminal propiece.

Xenopus Ro ribonucleoproteins: members of an evolutionarily conserved class of cytoplasmic ribonucleoproteins.

Protein oxidative damage is associated with life expectancy of houseflies.

Ultraviolet-induced mutations in Cockayne syndrome cells are primarily caused by cyclobutane dimer photoproducts while repair of other photoproducts is normal.

Rearrangement of sapA homologs with conserved and variable regions in Campylobacter fetus.

Transmembrane signaling in human polymorphonuclear neutrophils: 15(S)-hydroxy-(5Z,8Z,11Z,13E)-eicosatetraenoic acid modulates receptor agonist-triggered cell activation.

Distribution of the aquaporin CHIP in secretory and resorptive epithelia and capillary endothelia.

Atomic force microscopy of cloned nicotinic acetylcholine receptor expressed in Xenopus oocytes.

Casimir light: pieces of the action.

Characterization of an intronless collagen gene family in the marine sponge Microciona prolifera.

All-trans-retinol is a ligand for the retinoic acid receptors.

NF-IL6-mediated transcriptional activation of the long terminal repeat of the human immunodeficiency virus type 1.

Pleiotropic effect of the human T-cell leukemia virus Tax protein on the DNA binding activity of eukaryotic transcription factors.

Photoaffinity labeling of Torpedo acetylcholine receptor at multiple sites.

CCAAT/enhancer binding protein alpha (C/EBP alpha) undifferentiated protein: a developmentally regulated nuclear protein that binds to the C/EBP alpha gene promoter.

Human foamy virus genome possesses an internal, Bel-1-dependent and functional promoter.

Thyroid hormone-dependent transcriptional regulation of exogenous genes transferred into Xenopus tadpole muscle in vivo.

Increased tolerance to two oomycete pathogens in transgenic tobacco expressing pathogenesis-related protein 1a.

Three-dimensional waves of excitation during Dictyostelium morphogenesis.

Substitution of the erbB-2 oncoprotein transmembrane domain activates the insulin receptor and modulates the action of insulin and insulin-receptor substrate 1.

Can a protein influence the fate of its own coding sequence?: the amino- and carboxyl-terminal regions of H1 histone.

Nonreciprocal homologous recombination between Agrobacterium transferred DNA and a plant chromosomal locus.

Molecular mechanisms of oncogenic mutations in tumors from patients with bilateral and unilateral retinoblastoma.

Fractionated nuclear extracts from hamster cells catalyze cell-free recombination at selective sequences between adenovirus DNA and a hamster preinsertion site.

Detection of recombinations between c-myc and immunoglobulin switch alpha in murine plasma cell tumors and preneoplastic lesions by polymerase chain reaction.

Src-homology 3 domain of protein kinase p59fyn mediates binding to phosphatidylinositol 3-kinase in T cells.

Isolation and transmission of the Lyme disease spirochete from the southeastern United States.

Generation of varicella-zoster virus (VZV) and viral mutants from cosmid DNAs: VZV thymidylate synthetase is not essential for replication in vitro.

Vpu protein of human immunodeficiency virus type 1 enhances the release of capsids produced by gag gene constructs of widely divergent retroviruses.

Long-term depression of glutamate-induced gamma-aminobutyric acid release in cerebellum by insulin-like growth factor I.

Segregation of keratinocyte colony-forming cells in the bulge of the rat vibrissa.

Individual variation in contractile cost and recovery in a human skeletal muscle.

Gibberellin A1 is required for stem elongation in spinach.

Change of apparent stoichiometry of proximal-tubule Na(+)-HCO3- cotransport upon experimental reversal of its orientation.

Cloning and characterization of cDNA encoding glyoxal oxidase, a H2O2-producing enzyme from the lignin-degrading basidiomycete Phanerochaete chrysosporium.

The genetic basis of Weber-Cockayne epidermolysis bullosa simplex.

Deduced amino acid sequence of a putative sodium channel from the scyphozoan jellyfish Cyanea capillata.

Molecular cloning of the cDNA for an MDCK cell Na(+)- and Cl(-)-dependent taurine transporter that is regulated by hypertonicity.

Genetic organization of a repeated DNA sequence family in the rice blast fungus