RNA with its
nitrogenous bases to the left and
DNA to the right.
RNA is primarily made up of four different
bases:
adenine,
guanine,
cytosine, and
uracil.
Full article >>>RNA splicinga process or removing
introns from nuclear
RNA, thus converting it into a functional m
RNASource: Jenkins, John B. 1990.
Human Genetics, 2nd Edition. New York: Harper & Row ...
Full article >>>RNA editing occurs by two distinct mechanisms:
Substitution Editing: chemical alteration of individual
nucleotides (the equivalent of
point mutations).
Full article >>>Some t
RNAs are synthesized in
long precursors containing several t
RNAs and are released by endonucleotlytic
processing.
Facts ...
Full article >>>Transfer RNA. Small
RNA molecules that carry
amino acids to the
ribosome for polymerization into a
polypeptide.
Full article >>>Search for
RNA in these other data
bases too
Definition of
RNA :
A single-
stranded
nucleic acid similar to
DNA but having ribose sugar rather than
deoxyribose sugar and
uracil rather than
thymine as one of the
pyrimidine bases.
Full article >>>RNA plays several roles in
biology:
Messenger RNA (m
RNA) is
transcribed directly (
splicing in
eukaryotes) from a
gene's
DNA (in
eukaryotes exported into the
cytoplasm) and is used to encode
proteins.
Full article >>>microRNA (mi
RNA)
An abundant
class of
molecules consisting of a non-
coding sequence of approximately 22
nucleotides. mi
RNA controls
gene expression at the post-
transcriptional level.
Related ...
Full article >>>A chemical similar to a single
strand of
DNA. In
RNA, the letter U, which stands for
uracil, is substituted for T in the
genetic code.
RNA delivers
DNA's genetic
message to the
cytoplasm of a
cell where
proteins are made.
explained: ...
Full article >>>RNA is single-
stranded as shown below.
Codons
One
strand of
DNA (the
anti-sense strand) is used as a
template to produce a single
strand of m
RNA.
Full article >>>RNA is synthesized in the 5' to 3' direction from a
DNA strand which runs in the antiparallel direction (3' to 5').
Full article >>>RNA splicingA process by which
introns are removed from primary See
RNA transcripts leaving only
exons that encode the
amino acid sequence of a
protein.
Related Terms:
Intron ...
Full article >>>RNA codons.
The
genetic code is a set of rules, which maps
DNA sequences to
proteins in the living
cell, and is employed in the process of
protein synthesis.
Full article >>>RNA polymerase: the
enzyme that moves along the
DNA strand, reads the
nucleotides one by one, and synthesizes a
complementary m
RNA molecule according to the principle of
complementary
base pairing.
Full article >>>RNA -- "
ribonucleic acid". The
nucleic acid which carries the
DNA message into parts of the
cell where it is interpreted and used. The 18S
ribosomal RNA sequence has been used in many groups of
organisms to reconstruct
phylogeny.
Full article >>>RNA polymerase opens the part of the
DNA to be
transcribed. Only one
strand of
DNA (the
template strand) is
transcribed.
Full article >>>RNA splicing -
RNA-
processing step in which all of the
intron sequences are removed and
exon sequences are kept therebv producing a much shorter
RNA molecule.
second law of thermodynamics - the degree of dis
order in the universe can only increase ...
Full article >>>RNA: See
Ribonucleic acid.
Sequence: See
Base sequence.
Sequencer: An apparatus used for deciphering the
order of
bases in a stra nd of
DNA.
Full article >>>RNA processingModification of
RNA before it leaves the
nucleus, a process unique to
eukaryotes.
RNA splicing ...
Full article >>>RNA phage A
phage that carries
RNA as its
genetic material. Some examples include
phage MS2 and Q.
Full article >>>RNAEMBL
Nucleotide Sequence Database Europe's primary
DNA and
RNA sequence resource.
Promega supplier of biological reagents and reagent systems used in research and applied technology applications
Ribosomal Database Project ...
Full article >>>RNA world. Hypothetical stage in the
evolution of life on earth in which both cata
lysis and
replication were performed by
RNA, not
protein enzymes and
DNA.
Full article >>>RNA polymerase -
protein that synthesizes
RNA from a
DNA template.
Back to the Top
senescence - aging.
Full article >>>RNA (
ribonucleic acid). An
organic acid composed of re- peating
nucleotide units of
adenine,
guanine,
cytosine, and
uracil, whose ribose components are linked by
phosphodiester bonds.
Full article >>>RNA Splicing: A complex and incompletly understood series of reactions occuring in the
nucleus of eukaryotic
cells in which
pre-mRNA transcribed from chromosomal
DNA is processed such that noncoding regions of the
pre-mRNA (
introns) are excised, ...
Full article >>>ds
RNAis the major activator of the
PKR
enzyme which is the major agent of anti-viral innate immunity.
Full article >>>DNA-
RNA-
Protein Synthesis (hands-on learning module)
Online Introductory Activity-What is needed for Life? Which
molecules support life? What were the first
molecules to form life?
Nucleic Acids:
DNA and
RNA ...
Full article >>>Is r
RNA easy to handle in lab?
Ribosomal RNA is universal. It occurs in every living
organism. In a typical
bacterial
cell there are on the
order of ten or more thousands of copies of the
ribosome.
Full article >>>A matrix composed of a highly purified form of agar that is used to separate larger
DNA and
RNA molecules ranging 20,000
nucleotides. (See
Electrophoresis.)
Alleles.
Full article >>>poly
ribosome (
polysome) A complex of an m
RNA molecule and many
ribosomes.
polysaccharide A linear or branched polymer of monosaccharide units linked by glycosidic bonds.
polysome (poly
ribosome) A complex of an m
RNA molecule and many
ribosomes.
Full article >>>Therefore each
strand of
DNA or
RNA has a free 3' C at one end and a free 5' C at the other. The free 3' C normally carries a - OH group, and the 5' C a
phosphate group.
Full article >>>23-39 4 Mechanistic studies of the m
RNA transcription cycle Patrick Cramer..........41-47 5 Modulation of
RNA polymerase core functions by basal
transcription factor TFB/TFIIB Finn Werner, Simone Wiesler, Sven Nottebaum and Robert O.J. Weinzierl......
Full article >>>The common ancestor of all life probably used
RNA as its
genetic material. This ancestor gave rise to three major
lineages of life.
Full article >>>Polynucleotides are either
RNA or
DNA.
They guide the formation of exact copies of their own
sequence through
complementary pairing of
nucleotides subunits (U with A and G with C).
Full article >>>Trees constructed with other genes are generally similar, although they may place some early-branching groups very differently, presumably owing to rapid r
RNA evolution. The exact relationships of the three
domains are still being debated.
Enlarge ...
Full article >>>Nucleotide: A subunit of
DNA or
RNA composed of a
nitrogenous base, a phosphate
molecule, and a pentose sugar
molecule.
Pentose sugar: A sugar
molecule containing five carbon atoms. E.g.:
deoxyribose.
Full article >>>Ribosomal DNA genes The genes that make the three
RNA components of the
ribosome - the particle (also containing 60 or more
proteins) that is responsible for making
proteins within the
cell.
Full article >>>neoblast
Are undifferentiated
cells arising from the parenchyma, which are rich in
RNA. Thse
cells form the
blastema, which preceeds regeneration of planarians.
Covered in Lab 11
Animal Diversity I ...
Full article >>>'"/>