PUBLICATION
Structure and distribution of N-cadherin in developing zebrafish embryos: morphogenetic effects of ectopic over-expression
- Authors
- Bitzur, S., Kam, Z., and Geiger, B.
- ID
- ZDB-PUB-961014-105
- Date
- 1994
- Source
- Developmental Dynamics : an official publication of the American Association of Anatomists 201: 121-136 (Journal)
- Registered Authors
- Bitzur, Sigal, Geiger, Benjamin, Kam, Zvi
- Keywords
- none
- MeSH Terms
-
- Amino Acid Sequence
- Animals
- Base Sequence
- CHO Cells
- Cadherins/analysis*
- Cadherins/biosynthesis
- Cadherins/chemistry
- Cadherins/genetics
- Cattle
- Chickens
- Cloning, Molecular
- Cricetinae
- Cricetulus
- Embryo, Nonmammalian/chemistry
- Embryo, Nonmammalian/ultrastructure
- Gene Expression Regulation, Developmental
- Humans
- In Situ Hybridization
- Mice
- Molecular Sequence Data
- Morphogenesis
- RNA, Messenger/genetics
- Recombinant Fusion Proteins/biosynthesis
- Sequence Alignment
- Sequence Homology, Amino Acid
- Species Specificity
- Transfection
- Xenopus
- Zebrafish/embryology*
- Zebrafish/metabolism
- Zebrafish Proteins/analysis*
- Zebrafish Proteins/biosynthesis
- Zebrafish Proteins/chemistry
- Zebrafish Proteins/genetics
- PubMed
- 7873785 Full text @ Dev. Dyn.
Citation
Bitzur, S., Kam, Z., and Geiger, B. (1994) Structure and distribution of N-cadherin in developing zebrafish embryos: morphogenetic effects of ectopic over-expression. Developmental Dynamics : an official publication of the American Association of Anatomists. 201:121-136.
Abstract
N-cadherin cDNA was cloned from a zebrafish embryonic cDNA library. Analysis of the deduced amino acid sequence of this molecule (ZN-cadherin) revealed a high degree of homology to N-cadherins of other species, except that its pre-sequence is considerably shorter. Nevertheless, following transfection into chinese hamster ovary (CHO) cells, the expressed protein was functionally active, namely participated in calcium- dependent intercellular interactions. Moreover, ectopic over- expression of ZN-cadherin, following mRNA microinjection into 2-4 cell embryos, caused microaggregation and uneven segregation of deep cells, resulting in distorted embryos. Developmental Northern and Western blot analyses indicated that both the mRNA and the protein first appear at gastrulation. In- situ hybridization showed that ZN-cadherin mRNA was initially present in all deep cells, and later became restricted to various epithelial and neural tissues. Whole-mount immunostaining indicated that while ZN-cadherin was already present at 50% epiboly, it became associated with cell junctions only 4-5 h later. In developing somites ZN-cadherin expression was prominent but transient. High levels of the protein were detected in epithelial somites and its expression was apparently down regulated concomitantly with the onset of myogenesis.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping