Coding in Biological Definition

Protein biosynthesis

... of the DNA double helix. This is called the coding strand . The transcription starts with ... through the strand that is opposite to the coding strand (the cell wants a copy of the coding strand, so it needs to copy that from the DNA ...

Alternative splicing

... be considered as a twofold information structure: A DNA sequence coding for the pre-mRNA An additional DNA code or other regulating process, ... importance for genetics it means that the old idea of one DNA sequence coding for one polypeptide (the "one-gene-one-protein" hypothesis) is no longer ...

Genetic code

... DNA, and in RNA, is composed of tri-nucleotide units called codons , each coding for a single amino acid. Each nucleotide sub-unit consists of a phosphate ... methionine and serves as an initiation site: the first AUG in an mRNA 's coding region is where translation into protein begins. 2 This is a start ...

Gene

... determines the sequence of the amino acids that make up a protein. The coding of a three nucleotide DNA sequence to a specific amino acid is ... of a trait, has no immediate way to know whether this pattern arises from coding sequences or regulatory sequences. Typically, he or she will simply ...

Genetic code

... DNA, and in RNA, is composed of tri-nucleotide units called codons , each coding for a single amino acid. Each nucleotide sub-unit consists of a phosphate ... methionine and serves as an initiation site: the first AUG in an mRNA 's coding region is where translation into protein begins. 2 This is a start ...

Genomics

... suggests that sequence has functional significance. It may be a protein coding sequence or regulatory region. Experimental investigation of some of these ... Progress 85% comparing all protein coding sequences, NHGRI Dog 95% Jon Entine in the ...

Molecular biology

... to study protein function is expression cloning. In this technique, DNA coding for a protein of interest is cloned (using PCR and/or restriction ... and the cells are said to be transduced. In either case, DNA coding for a protein of interest is now inside a cell, and the protein can now be ...

Antibiotic

... to nafcillin , leaving only a narrow selection of drugs such as vancomycin useful for treatment. The situation is worsened by the fact that genes coding for antibiotic resistance can be transferred between bacteria, making it possible for bacteria never exposed to an antibiotic to acquire resistance ...

DNA sequence

... a sequence. With regard to its biological function, which may depend on context, a sequence may be sense or anti-sense (see DNA ), and either coding or noncoding . DNA sequences can also contain " junk DNA ". See also DNA DNA motif ...

DNA

... 64 possible codons, most amino acids have more than one possible codon. There are also three 'stop' or 'nonsense' codons signifying the end of the coding region. In many species of organism, only a small fraction of the total sequence of the genome appears to encode protein. The function of the ...

Expressed sequence tag

... An expressed sequence tag or EST is a short sub-sequence of a transcribed protein -coding or non-protein coding DNA sequence . It was originally intended as a way to identify gene transcripts , but has since been instrumental in gene discovery and sequence ...

Isozyme

... development or in different tissues. Allozymes may result from point mutations or from insertion-deletion ( indel ) events that affect the DNA coding sequence of the gene . As with any other new mutation , there are three things that may happen to a new allozyme: (1) It is most likely that ...

Olfaction

... from molecular structure. Journal of Theoretical Biology, 216, 367-385. Stopfer, M, Jayaraman, V, Laurent, G (2003) Intensity versus Identity coding in an Olfactory System, Neuron 39, 991-1004. Stopfer, M. and Laurent, G. (1999). Short-term memory in olfactory network dynamics, Nature 402, ...

RNA

... to one of strands in the DNA . The strand from which the RNA is encoded is called the template strand ; the opposite strand is called the coding strand (so called because it logically has the equivalent nucleotide sequence of the new RNA strand). A small stretch of DNA-RNA hybrid is present ...