N-cadherin gene maps to human chromosome 18 and is not linked to the E-cadherin gene.
J Neurochem
; 55(3): 805-12, 1990 Sep.
Article
en En
| MEDLINE
| ID: mdl-2384753
ABSTRACT
cDNA clones encoding the human N-cadherin cell adhesion molecule have been isolated from an embryonic muscle library by screening with an oligonucleotide probe complementary to the chick brain sequence and chick brain cDNA probe lambda N2. Comparison of the predicted protein sequences revealed greater than 91% homology between chick brain, mouse brain, and human muscle N-cadherin cDNAs over the 748 amino acids of the mature, processed protein. A single polyadenylation site in the chick clone was also present and duplicated in the human muscle sequence. Immediately 3' of the recognition site in chick a poly(A) tail ensued; however, in human an additional 800 bp of 3' untranslated sequence followed. Northern analysis identified a number of major N-cadherin mRNAs. These were of 5.2, 4.3, and 4.0 kb in C6 glioma, 4.3 and 4.0 kb in human foetal muscle cultures, and 4.3 kb in human embryonic brain and mouse brain with minor bands of 5.2 kb in human muscle and embryonic brain. Southern analysis of a panel of somatic cell hybrids allowed the human N-cadherin gene to be mapped to chromosome 18. This is distinct from the E-cadherin locus on chromosome 16. Therefore, it is likely that the cadherins have evolved from a common precursor gene that has undergone duplication and migration to other chromosomal locations.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Cromosomas Humanos Par 18
/
Cadherinas
/
Mapeo Cromosómico
Límite:
Animals
/
Humans
Idioma:
En
Revista:
J Neurochem
Año:
1990
Tipo del documento:
Article
País de afiliación:
Reino Unido