辐射可同时损伤 DNA 双螺旋的两个分支,这往往会产生复杂的化学变化,令 DNA 分子受损。 daccess-ods.un.org daccess-ods.un.org [...] data in the register of companies, as well as in developing new legislation to regulate the collection anduseof DNAdata. ...
Is B-DNA double-stranded with antiparallel strands? How many hydrogen bonds exist between this DNA strand and its complementary strand? 5 ATAGAGG 3 In humans, one gene consists of how many nucleotide pairs? Approximately how many nucleotide bases are in the human genome?
摘要: Bacillus subtilis bacteriophage SPP-1 has separable complementary DNA strands. Fragments of nascent DNA isolated a very short time after phage infection show that these short chains are complementary to both phage DNA strands, as observed by hybridization techniques....
Upon cellular DNA damage, the p53 tumor suppressor protein transmits a signal to genes that control the cell cycle and apoptosis. One function of p53 that is important for its role in this pathway is its ability to function as a sequence-specific transcriptional activator. We demonstrate here ...
The structure of deoxyribonucleic acid - DNA - was shown to be a double-helix years ago, but the convention of naming each strand has become a topic of confusion for scientists and students alike. Among DNA pairs, one is called Watson and the other Crick
New insights into the molecular architecture of tight junctions allow us to now discuss the structure and functions of this unique cell-cell adhesion apparatus in molecular terms.关键词: Animals Humans Membrane Lipids Membrane Proteins Protein Structure, Tertiary Cell Adhesion Tight Junctions Permeability...
Geminiviruses have genomes composed of single-stranded DNA molecules and encode a rolling-circle replication (RCR) initiation protein (“Rep”),
The 1.74-A crystal structure of the human transcription cofactor PC4 in complex with a single-stranded 20-mer oligonucleotide reveals how symmetry-related beta-surfaces of the protein homodimer interact with juxtaposed 5-nucleotide DNA regions running in opposite directions. The structure explains high-...
Characterization of genomic poly(dT-dG).poly(dC-dA) sequences: structure, organization, and conformation. Hybridization studies suggest the abundant presence of poly(dT-dG).poly(dC-dA) (TG-element), a potential Z-DNA sequence, in eucaryotic genomes. We have iso... H Hamada,MG Petrino,T ...
HumansCell LineCarcinomaMouth NeoplasmsDNA Restriction EnzymesDeoxyribonucleotidesDNA, MitochondrialNucleic Acid ConformationDNA ReplicationMolecular WeightHuman mitochondrial DNA contains two physically separate and distinct origins of DNA replication. The initiation of each strand (heavy and light) occurs at a...