Complementary deoxyribonucleic acid cloning of a novel transforming growth factor-beta messenger ribonucleic acid from chick embryo chondrocytes. 1988

S B Jakowlew, and P J Dillard, and P Kondaiah, and M B Sporn, and A B Roberts
Laboratory of Chemoprevention National Cancer Institute, Bethesda, Maryland 20892.

Transforming growth factor beta 1 (TGF beta 1) has been purified and the mRNA cloned from a number of mammalian species including human, murine, bovine, porcine, and simian. Using a human TGF beta 1 cDNA probe, we have detected two distinct TGF beta RNAs in cultured primary chick embryo chondrocytes. One of these RNAs, migrating at about 1.7 kilobases, shows similarity to mammalian TGF beta 1. The second RNA, migrating at about 3 kilobases, is a novel TGF beta mRNA which we have named TGF beta 3. Clones corresponding to each of these RNAs were isolated from a cultured primary chick embryo chondrocyte cDNA library. Two cDNA clones for TGF beta 3, pTGFB-ChX17 and pTGFB-ChX25, contained a 39 nucleotide-long 5'-untranslated region, a 1236 nucleotide-long coding region, and a 911 nucleotide-long 3'-untranslated region. The predicted protein includes a signal peptide of 20-23 amino acids as in human TGF beta 1 and 2, and a precursor protein consisting of 412 amino acids, which can be cleaved at a lys-arg site to produce a 112 amino acid processed peptide containing nine cysteine residues in the same positions as in human TGF beta 1 and 2. At the nucleotide level, the processed coding region of TGF beta 3 shows 72% and 76% identity with the processed coding regions of human TGF beta 1 and TGF beta 2, respectively; at the amino acid level, TGF beta 3 shows 76% identity with TGF beta 1 and 79% identity with TGF beta 2.(ABSTRACT TRUNCATED AT 250 WORDS)

UI MeSH Term Description Entries
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D002356 Cartilage A non-vascular form of connective tissue composed of CHONDROCYTES embedded in a matrix that includes CHONDROITIN SULFATE and various types of FIBRILLAR COLLAGEN. There are three major types: HYALINE CARTILAGE; FIBROCARTILAGE; and ELASTIC CARTILAGE. Cartilages
D002642 Chick Embryo The developmental entity of a fertilized chicken egg (ZYGOTE). The developmental process begins about 24 h before the egg is laid at the BLASTODISC, a small whitish spot on the surface of the EGG YOLK. After 21 days of incubation, the embryo is fully developed before hatching. Embryo, Chick,Chick Embryos,Embryos, Chick
D003001 Cloning, Molecular The insertion of recombinant DNA molecules from prokaryotic and/or eukaryotic sources into a replicating vehicle, such as a plasmid or virus vector, and the introduction of the resultant hybrid molecules into recipient cells without altering the viability of those cells. Molecular Cloning
D004247 DNA A deoxyribonucleotide polymer that is the primary genetic material of all cells. Eukaryotic and prokaryotic organisms normally contain DNA in a double-stranded state, yet several important biological processes transiently involve single-stranded regions. DNA, which consists of a polysugar-phosphate backbone possessing projections of purines (adenine and guanine) and pyrimidines (thymine and cytosine), forms a double helix that is held together by hydrogen bonds between these purines and pyrimidines (adenine to thymine and guanine to cytosine). DNA, Double-Stranded,Deoxyribonucleic Acid,ds-DNA,DNA, Double Stranded,Double-Stranded DNA,ds DNA
D005796 Genes A category of nucleic acid sequences that function as units of heredity and which code for the basic instructions for the development, reproduction, and maintenance of organisms. Cistron,Gene,Genetic Materials,Cistrons,Genetic Material,Material, Genetic,Materials, Genetic
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000595 Amino Acid Sequence The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION. Protein Structure, Primary,Amino Acid Sequences,Sequence, Amino Acid,Sequences, Amino Acid,Primary Protein Structure,Primary Protein Structures,Protein Structures, Primary,Structure, Primary Protein,Structures, Primary Protein
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001483 Base Sequence The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence. DNA Sequence,Nucleotide Sequence,RNA Sequence,DNA Sequences,Base Sequences,Nucleotide Sequences,RNA Sequences,Sequence, Base,Sequence, DNA,Sequence, Nucleotide,Sequence, RNA,Sequences, Base,Sequences, DNA,Sequences, Nucleotide,Sequences, RNA

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