Alternative splicing
... as a twofold information structure:
A DNA
sequence coding for the pre-mRNA
An additional DNA code ... case, certain exons are spliced out to alter the
sequence of amino acids in the expressed protein.
... genetics it means that the old idea of one DNA
sequence coding for one polypeptide (the ...
Bioinformatics
... . Major research efforts in the field include
sequence alignment , protein structure alignment , ...
1 Major research areas
1.1
sequence analysis
2 Computational evolutionary ... External links
Major research areas
sequence analysis
Main articles: ...
Biopolymer
... acids . The exact chemical composition and the
sequence in which these units are arranged is called the ... acid terminus.
The convention for a nucleic acid
sequence is to list the nucleotides as they occur from ... phosphate diester linkages of the chain. Such a
sequence is called the primary structure of the ...
BLAST
... to look for sequences that resemble a given
sequence of interest. For example, following the discovery ... in lineage to a certain protein whose amino-acid
sequence I know?
Where does the DNA that I've just ... part of other algorithms that require approximate
sequence matching.
The BLAST algorithm and a computer ...
Chromosome walking
... sequenced, this method works by dividing the long
sequence into several consecutive short ones.
The basic ... primer that matches the beginning of the DNA to
sequence is used to synthesize a short DNA strand ... along the sequence. The method can be used to
sequence entire chromosomes (thus, chromosome walking ). ...
Genetic code
... genetic code
4.3 Phase or reading frame of a
sequence
5 Origin of the genetic code
6 ... will then be folded into a protein .
The gene
sequence inscribed in DNA, and in RNA, is composed of ... codon combinations. For example, the RNA
sequence UUUAAACCC contains the codons UUU, AAA and CCC, ...
Bioinformatics
... . Major research efforts in the field include
sequence alignment , protein structure alignment , ...
1 Major research areas
1.1
sequence analysis
2 Computational evolutionary ... External links
Major research areas
sequence analysis
Main articles: ...
DNA sequence
...
A DNA
sequence (sometimes genetic
sequence ) is a succession of letters representing the ... abutting one another without gaps, as in the
sequence AAAGTCTGAC. This ...
DNA
... of molecular structure
4 The role of the
sequence
5 DNA replication
6 Mechanical ... length of the DNA is what it's all about, the
sequence itself is the description for genes;
... the next in the DNA strand.
The role of the
sequence
Within a gene, ...
Evolution
...
1.1.1 Morphological evidence
1.1.2 Genetic
sequence evidence
1.1.3 Origin of life
1.2 The ... and appendix are common examples.
Genetic
sequence evidence
Comparison of the genetic
sequence of organisms reveals that organisms that are ...
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 ... has since been instrumental in gene discovery and
sequence determination. An EST is produced by one-shot ...
Flagellum
... Many components of bacterial flagella share
sequence similarity to components of the type III ... of bacterial and archaeal flagella share no
sequence similarity. Instead, some components of archaeal flagella share
sequence and morphological similarity with components of ...
Gene
... the growth of biotechnology and the project to
sequence the human genome , the common usage of the word ... of a protein . The genetic code 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 essentially the same ...
Genetic code
... genetic code
4.3 Phase or reading frame of a
sequence
5 Origin of the genetic code
6 ... will then be folded into a protein .
The gene
sequence inscribed in DNA, and in RNA, is composed of ... codon combinations. For example, the RNA
sequence UUUAAACCC contains the codons UUU, AAA and CCC, ...
Genetic recombination
... by comparing the occurrence of a specific DNA
sequence with the appearance of a disease. When a high ... is found, it is likely that the appropriate gene
sequence is closer.
Problems of crossover
Crossover ... two double helices of DNA which are very close in
sequence and come into contact with one another. Thus, ...
Genetics
... Sanger's lab complete the entire genome of
sequence of Bacteriophage Φ-X174; .
1983 Kary ... cerevisiae is the first eukaryote genome
sequence to be released
1998 The first genome sequnce ... not strictly associated with changes in the DNA
sequence is called epigenetics .
Some take the view ...
Genomics
... biological discoveries. If a particular DNA
sequence or pattern is present among many members of a clade , that
sequence is said to have been conserved among the species. Evolutionary conservation of a DNA
sequence may imply that it confers a relative selective ...
Human Genome Project
... in the field of genomics (especially in
sequence analysis ), as well as huge advances in computing ... upon which gaps can be closed.
Each draft
sequence has been checked at least four to five times to ... DNA of a specific organism. While the human DNA
sequence offers the most tangible benefits, important ...
Microsatellite
...
A microsatellite is a short, noncoding DNA
sequence (a Tandemly Repetitive DNA sequence) that is ... same locus.
In a microsatellite, the repeated
sequence is very simple, consisting of two to four ... a microsatellite locus, one would expect to see a
sequence of ... The number of ...
Molecular evolution
... , which allow the determination of the exact
sequence of nucleotides or bases in either DNA or RNA. ... it is still a long and expensive process to
sequence the entire genome of an organism, and this has ... However it is quite feasible to determine the
sequence of a defined area of a particular chromosome . ...
Magnetic resonance imaging
... are basic parameters of image acquisition, a
sequence will take on the property of T2 weighting. On a ... tends to develop edema, which makes a T2 weighted
sequence sensitive for pathology, and generally able to ... of the magnetic gradients, a T2 weighted
sequence can be converted to a FLAIR (fluid light ...
Polymerase chain reaction
... is when primer design is based on protein
sequence . As several different codons can code for one ... is used in a particular case. Therefore primer
sequence corresponding to the amino acid isoleucine ... Mutagenesis is a way of making changes to the
sequence of nucleotides in the DNA. There are situations ...
Primary structure
... to obtain either nucleotide or peptide
sequence . The primary structure, in other words, is a biopolymer's exact chemical composition and to the
sequence in which its subunits are arranged.
While the ... ). However, knowing the structure of a similar
sequence (for example a member of the same Protein family ...
Promoter
...
In genetics , a promoter is a DNA
sequence that enables a gene to be transcribed . The ... The perfect promoter is called a canonical
sequence .
Contents showTocToggle("show","hide") ... the gene in the direction of transcription. The
sequence at -10 is called the Pribnow box and usually ...
Protein
... as its native state , which is determined by its
sequence of amino acids. Biochemists refer to four ...
Primary structure : the amino acid
sequence
Secondary structure : highly patterned ... genetic engineering , researchers can alter the
sequence and hence the structure, "targeting" , ...
Proteome
... in the genome. When the genome is defined by the
sequence of nucleotides , the proteome cannot be limited ... matching the observed peptide masses against a
sequence database . Tandem mass spectrometry, on the other hand, can get
sequence information from individual peptides by isolating ...
Restriction enzyme
... segments that contain a particular nucleotide
sequence , and it makes its incisions only within that sequence--known as a " recognition
sequence "--always in the same way.
Some enzymes make ... restriction enzymes, the length and the exact
sequence of a sticky-end " overhang ", as well as whether ...
Sequencing
... in a symbolic linear depiction known as a
sequence which succinctly summarizes much of the ... to have been devised to scale the method up to
sequence genes and genome. Two of the mainstream chain ... ways.
See also
Genetic code
sequence motif
External links
Information on ...
Signal transduction
... to as signal transduction often involve a
sequence of biochemical reactions inside the cell, ... to as " genetic programs ," one example being the
sequence of events that take place when an egg is ... protein to fold in a way such that the signal
sequence which enables its passage into the nucleus is ...
Biophysics
... The studies included under the umbrella of biophysics range from
sequence comparison to neural networks . In the recent past, biophysics included ... relationships.
Computer science - molecular simulations,
sequence alignment, neural networks, databases.
Mathematics - graph/network ...
Centromere
... of chromosomes.
In most eukaryotes, the centromere has no defined DNA
sequence . It typically consists of large arrays of repetitive DNA where the
sequence within individual repeat elements is similar but not identical. In ...
Endosymbiont
...
Announces and analyzes the full genome
sequence of Buchnera sp. APS, the endosymbiont of the pea aphid, and the first ... H. Watanabe, M. Hattori, Y. Sakaki and H. Ishikawa (2000), Genome
sequence of the endocellular bacterial symbiont of aphids Buchnera sp. APS, ...
Endosymbiont
...
Announces and analyzes the full genome
sequence of Buchnera sp. APS, the endosymbiont of the pea aphid, and the first ... H. Watanabe, M. Hattori, Y. Sakaki and H. Ishikawa (2000), Genome
sequence of the endocellular bacterial symbiont of aphids Buchnera sp. APS, ...
Enzyme
... nomenclature for enzymes, the EC numbers ; each enzyme is described by a
sequence of four numbers, preceded by "EC". The first number broadly classifies the ...
External links
ExPASy enzyme database , links to Swiss-Prot
sequence data, entries in other databases and to related literature searches
...
Lambda phage
... attachment site in the bacterial genome, called att λ . The
sequence of the att site is called att B and consists of the parts B-O-B', whereas the
complementary
sequence in the circular phage genome is called att P and consists of the parts ...
Neutral theory of molecular evolution
... through the spontaneous mutation of a single nucleotide within the
sequence of a gene. In single-celled organisms, such an event immediately ... substitutions becomes fixed, the effect is to add a substitution to the
sequence of the previously fixed allele. In this way, neutral substitutions tend to ...
Primer
... use for degenerate primers is when primer design is based on protein
sequence . As several different codons can code for one amino acid , it is often ... to deduce which codon is used in a particular case. Therefore primer
sequence corresponding to the amino acid isoleucine might be "ATH", where A ...
Prion
... molecules, causing the fiber to grow. Small differences in the amino acid
sequence of prion-forming regions lead to distinct structural features on the ... As a result, only free protein molecules that are identical in amino acid
sequence to the prion protein can be recruited into the growing fiber. This ...
RNA
... 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 at the active site of the enzyme. The synthesis continues until a termination
sequence is reached. The resulting RNA molecule is the primary transcript . ...
Y chromosome
... bases contain functioning genes important for male fertility. Most of the
sequence pairs are greater than 99.97 percent identical. The extensive use of gene ... The male-specific region of the human Y chromosome is a mosaic of discrete
sequence classes. Nature, 423, 825-837
Rozen, S., et. al. (2003) Abundant gene ...