Bases

Bases are substances that combine with hydrogen ions, thus lowering the concentration of hydrogen ions. NaOH (above) is a base because OH- is capable of combining with H+ to form water. Bases are therefore proton acceptors. OH- + H+ H2O ...

Dictionary » B » Bases Bases Base sequence (Science: molecular biology) The order of nucleotide bases in a dna molecule.

Bases are substances that accept protons from acids. Let's look at an example.

Other bases in addition to the normal adenine; cytosine; guanine; and uracil. Found primarily in tRNAs and produced by post transcription modification of one of the normal bases. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...

Human Genome Project Sequence Databases Human Genome Project Information Genomic Science Program DOE Microbial Genomics home About the HGP ...

Bases: The molecular building blocks of DNA and RNA: adenine, cytosine, guanine, thymine, and (in RNA only) uracil. In DNA, A attaches only to T, and C attaches only to G. In RNA, A attaches only to U, and C attaches only to G.

Databases Lipid MAPS - LIPID Metabolites And Pathways Strategy lipidbank - Chemical properties The Lipid library - Provides information on the chemistry, analysis and biochemistry of lipids ...

Leaf bases acuminate: coming to a sharp, narrow, prolonged point. acute: coming to a sharp, but not prolonged point. auriculate: ear-shaped cordate: heart-shaped with the norch away from the stem. cuneate: wedge-shaped.

Same bases, different 'frame': ...A TGA CAT GTA AAG ATA GAC TAA CCT TTT GG... ... *** His Val Lys Ile Asp *** Pro Phe Gly.. Same sequence, the last of the 3 possible frames: ...

Three bases in DNA code for one amino acid. The DNA code is copied to produce mRNA. The order of amino acids in the polypeptide is determined by the sequence of 3-letter codes in mRNA. DNA vs RNA DNA ...

Three bases in a DNA or RNA sequence, which specify a single amino acid. [Talking Glossary] Conception In reproduction, conception is the point at which a sperm fertilizes an egg.

PURINE BASES - Adenine (A) or Guanine (G) (see NUCLEOTIDE). PULSED-FIELD GEL ELECTROPHORESIS (PFGE) - Separation of large (>50 kb) pieces of DNA, including complete chromosomes and genomes, ...

Purine bases - adenine (a) or guanine (g) (see nucleotide). Pyrimidine bases - cytosine (c), thymine (t) or uracil (u) (see nucleotide).

Modified Bases: These are those bases except the usual four from which DNA, RNA are synthesized, they result from postsynthetic changes in the nucleic acid. Molecular Biology: ...

nitrogenous bases The purines (adenine and guanine) and pyrimidines (thymine, cytosine and uracil) that form DNA and RNA molecules. NMP Ribonucleoside monophosphate. See nucleotide. NO See nucleolar organizer.

exon The DNA bases that code for an amino acid sequence. Exons are separated by introns that code for no amino acid sequences. PICTURE ...

- Two nitrogen bases that pair by hydrogen bonding in the double stranded DNA. The pairing is always a purine with a pyrimidine Betaine Aldehyde Dehydrogenase (BADH) ...

Two nitrogenous bases (adenine and thymine or guanine and cytosine) held together by weak bonds. Two strands of DNA are held together in the shape of a double helix by the bonds between base pairs. Base sequence ...

Sequence Order of bases in DNA or RNA (base sequence)or of amino acids in a protein.

A pair of complementary nitrogenous bases in a DNA molecule--adenine-thymine and guanine-cytosine. Also, the unit of measurement for DNA sequences. Bioaugmentation.

base pair a pair of hydrogen-bonded nitrogenous bases (one purine and one pyrimidine) that join the component strands of the DNA double helix.

reaction insertion mutation A mutation caused by insertion of one or more extra bases between bases in DNA, or a mutagen which itself is inserted between bases (like ethidium bromide).

the four nucleotides in dna contain the bases stranded molecule held together by weak bonds between base pairs of nucleotides. The four nucleotides in DNA contain the bases: adenine (A), guanine (G), cytosine (C), and thymine (T).

Watson and Crick proposed that the genetic code could be found in the sequence of bases in one of the two strands. (Only one strand carries the genetic message and is "read"...transcribed into mRNA).

The name comes from its structure, which is a sugar and phosphate backbone which have bases sticking out from it--so-called bases. So that "deoxyribo" refers to the sugar and the nucleic acid refers to the phosphate and the bases.

By putting information in a common way into electronic databases available on the web then we make it all, in a very explicit sense, a common venture, so that everybody can contribute to it and draw from it. We need editorial means to do that.

The collection, organization and analysis of large amounts of biological data, using networks of computers and databases.

Enhancers can act on promoters over many tens of kilobases of DNA and can be 5' or 3' to the promoter they regulate. A eukaryotic DNA sequence that increases transcription of a region even if the enhancer is distant from the region being transcribed.

After several years of often intense and acrimonious discussion, twin databases were established under the European Molecular Biology Laboratory in Heidelberg and as GenBank at Los Alamos National Laboratory.

Tests conducted with a simple piece-differential program (which bases moves solely on the difference between the number of checkers remaining to each side) with an eight-move look-ahead showed the neural net to be significantly superior, ...

Search for MTHFR in these other databases too Definition of MTHFR : MTHFR (methylenetetrahydrofolate reductase) is a metabolic enzyme that is involved in the conversion of homocysteine to methionine.

tRNAs are short (about 74-95 bases), single-stranded RNA molecules that contain a high proportion of modified nucleosides. When drawn in two-dimensions, tRNAs can be folded into a characteristic cloverleaf structure with three stem-loop structures.

The maximum achievable length is around 50 bases, but longer molecules can be constructed using oligonucleotides as building blocks.

Each strand of DNA is composed of a linear array of nucleotides bonded in such a way that the bases extend toward the central axis of the molecule while the two backbones are composed of alternating sugar and phosphate subunits.

Gene Hunter Gene hunter performs a meta-search for a gene by querying a number of different databases. Databases searched include TAIR, TIGR, PubMed, GenBank, Protein Information Resource, Swiss-PROT, and the Arabidopsis Genome Resource.

Base: the nitrogen-containing components of the DNA molecule. There are four types of bases known as adenine (A), guanine (G), thymine (T) and cytosine (C). The sequence of bases determines the genetic code.

A: Palms rely on overlapping leaf bases, thickened enlarged cells, and prop roots to stay up. This strategy is also used by cycads and tree ferns.

one of the nucleic acid bases, that along with sugar and inorganic phosphate make up the basic subunits of DNA and RNA Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...

The CpG-rich stretch of 20-50 nucleotides occurs within the first 100-200 bases upstream of the start site region (where promoter-proximal elements reside).

A specific sequence of bases in a nucleic acid molecule to which the enzymes responsible for replicating the nucleic acid bind to initiate the copying process. osmoconformer ...

codon A sequence of three bases on messenger RNA that specifies the position of an amino acid in a protein. coefficient of relationship The fraction of genes identical by common descent shared between two individuals.

nucleic acid hybridization - coming together (annealling) of single-stranded nucleic acid sequences by hydrogen bonding of complementary bases to form double-stranded molecules; ...

Coding strand Within a gene, this is the DNA strand which has the same sequence of bases as the primary transcript (with the substitution of T for U obviously). It is also called the sense strand.

single-stranded binding proteins (SSB) - bind to exposed DNA strands without covering the bases; they aid helicase by stabilizing the unwound, single-stranded conformation ...

bulb. An underground storage organ, composed chiefly of enlarged, fleshy leaf bases. C Index ...

Deoxyribonucleic Acid (DNA) the genetic code material‚ consisting of pairs of nitrogenous bases bonded to a "ladder" of phosphate and ribose molecules (de = from‚ down‚ out; deoxy = without oxygen) ...

See also: Sequence, DNA, Genome, Human, Site