messenger RNA

n. Abbr. mRNA The form of RNA that mediates the transfer of genetic information from the cell nucleus to ribosomes in the cytoplasm, where it serves as a template for protein synthesis. It is synthesized from a DNA template during the process of transcription.

messenger RNA

n (Biochemistry) biochem a form of RNA, transcribed from a single strand of DNA, that carries genetic information required for protein synthesis from DNA to the ribosomes. Sometimes shortened to: mRNA See also transfer RNA, genetic code

messenger RNA

n. a molecule of RNA that is synthesized in the nucleus from a DNA template and then enters the cytoplasm, where its genetic code specifies the amino acid sequence for protein synthesis. Abbr.: mRNA [1960–65]

mes·sen·ger RNA

(mĕs′ən-jər) See under RNA.

Thesaurus

Noun

messenger RNA - the template for protein synthesis; the form of RNA that carries information from DNA in the nucleus to the ribosome sites of protein synthesis in the cellinformational RNA, mRNA, template RNAribonucleic acid, RNA - (biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes; it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in the cell; "ribonucleic acid is the genetic material of some viruses"

Translations

messenger RNA

RNA

ribonucleic acid.messenger RNA (mRNA) see ribonucleic acid.ribosomal RNA (rRNA) see ribonucleic acid.transfer RNA (tRNA) see ribonucleic acid.

mes·sen·ger RNA (mRNA),

(mes'en-jĕr), the RNA reflecting the exact nucleoside sequence of the genetically active DNA and carrying the "message" of the latter, coded in its sequence, to the cytoplasmic areas where protein is made in amino acid sequences specified by the mRNA, and hence primarily by the DNA; viral RNAs are considered to be natural messenger RNAs. Synonym(s): informational RNA, template RNA

messenger RNA

An RNA (ribonucleic acid) molecule which has coding regions and translation signals derived from a gene, carries the reverse template message from DNA, and is required for protein synthesis. mRNA is a nucleic acid intermediate that specifies the amino acid sequence of a polypeptide during translation. Under most circumstances, and in accordance with the so-called central dogma of biology, the message flows from DNA to RNA, which is then translated into protein. DNA is wrapped around proteins (histones in chromatin); the DNA then unwinds, allowing transcription by one of the three RNA polymerases, forming a primary (nuclear) RNA transcript that is then processed to remove the intervening RNA sequences (introns), yielding a mature mRNA molecule. The mature mRNA then passes through nuclear pores into the cytoplasm, where translation into proteins occurs. When a particular mRNA is no longer needed, it is degraded by ribonucleases.

mes·sen·ger RNA

(mRNA) (mes'ĕn-jĕr) The RNA reflecting the exact nucleoside sequence of the genetically active DNA and carrying the "message" of the latter, coded in its sequence, to the cytoplasmic areas where protein is made in amino acid sequences specified by the mRNA, and hence primarily by the DNA; viral RNA is considered to be natural messenger RNA.

messenger RNA

Commonly written as mRNA, this is the molecule that reads the genetic code from DNA. Before this can happen the double helix must separate into two single strands. One of these carries the same sequence as the mRNA and is called the coding strand. The other is called the template, or antisense, strand and it is this strand that directs the synthesis of the mRNA by complementary base pairing. In RNA the base uracil replaces thymine. The messenger RNA molecule then leaves the cell nucleus and passes out through a nuclear membrane pore to the site of protein synthesis. There the appropriate amino acids are selected and placed in the right order by TRANSFER RNA which, using its anticodons, reads the code on the messenger RNA.

messenger RNA (mRNA)

a single stranded type of POLYNUCLEOTIDE molecule that comprises a sequence of ribonucleotides with the bases ADENINE, GUANINE, CYTOSINE and URACIL. mRNA is transcribed (see TRANSCRIPTION from the DNA and contains the sequence of instructions from which a PROTEIN is translated (see TRANSLATION by the action of RIBOSOMES.

messenger RNA

messenger RNA

messenger RNA

messenger RNA

mes·sen·ger RNA

messenger RNA

RNA

mes·sen·ger RNA (mRNA),

messenger RNA

messenger RNA

mes·sen·ger RNA

messenger RNA

messenger RNA (mRNA)

messenger RNA

Synonyms for messenger RNA

noun the template for protein synthesis

Synonyms

Related Words