PUBLICATION
Genomic, cDNA, and embryonic expression analysis of zebrafish transforming growth factor beta 3 (tgfbeta3)
- Authors
- Cheah, F.S., Jabs, E.W., and Chong, S.S.
- ID
- ZDB-PUB-050303-5
- Date
- 2005
- Source
- Developmental Dynamics : an official publication of the American Association of Anatomists 232(4): 1021-1030 (Journal)
- Registered Authors
- Chong, Samuel
- Keywords
- Danio rerio; transforming growth factor 3; palatogenesis; cleft palate; notochord; lens; heart;pectoral fins; pharyngeal arch
- MeSH Terms
-
- Animals
- Base Sequence
- DNA, Complementary/genetics
- Gene Expression Regulation, Developmental/physiology*
- Genome
- Molecular Sequence Data
- Transforming Growth Factor beta/biosynthesis*
- Transforming Growth Factor beta/genetics
- Transforming Growth Factor beta3
- Zebrafish/embryology*
- Zebrafish/genetics
- Zebrafish Proteins/biosynthesis*
- Zebrafish Proteins/genetics
- PubMed
- 15739231 Full text @ Dev. Dyn.
Citation
Cheah, F.S., Jabs, E.W., and Chong, S.S. (2005) Genomic, cDNA, and embryonic expression analysis of zebrafish transforming growth factor beta 3 (tgfbeta3). Developmental Dynamics : an official publication of the American Association of Anatomists. 232(4):1021-1030.
Abstract
TGFbeta3, a member of the transforming growth factor beta family, regulates a spectrum of biological processes and is involved in mammalian pulmonary and craniofacial development. Homologs of human TGFbeta3 have been identified in several vertebrate species. We sequenced a cDNA clone of zebrafish tgfbeta3, consisting of a 271-bp 5' untranslated region, a 1,233-bp open reading frame that encodes a predicted 410 amino acid peptide, and a 527-bp 3' untranslated region. Using 5' rapid amplification of cDNA ends, the transcription start site of this gene was determined to lie an additional 29 nucleotides upstream. The gene is composed of seven exons and maps to a segment of linkage group 17 that is syntenic to the human TGFbeta3 locus on chromosome 14q24. One stimulating protein 1 (Sp1) and two (TATA binding protein) (TBP) transcription factor binding sites were identified in the putative promoter segment upstream of the transcription start site. Comparative alignment analysis revealed a high degree of tgfbeta3 nucleotide and amino acid identity between zebrafish and other species, including complete conservation of the cysteine knot structure that facilitates protein-protein interaction. Also, 9 of 10 amino acid residues critical for ligand/receptor binding in human TGFbeta3 are conserved in zebrafish, suggesting a high degree of functional conservation even in lower vertebrates. Zebrafish tgfbeta3 transcripts were first detected in the notochord (10 somite to high-pec stage), followed by expression in the developing pharyngeal arch and neurocranial cartilage (18 somite to protruding mouth stage), lens and heart (21 somite to protruding mouth stage), and pectoral fins (prim-25 to protruding mouth stage). The strong expression in the pectoral fins, not reported in the orthologous mammalian forelimb, suggests a modified or novel function of tgfbeta3 during early fish development. Developmental Dynamics, 2005. (c) 2005 Wiley-Liss, Inc.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping