Diversity revealed by a novel family of cadherins expressed in neurons at a synaptic complex.
In mammals, neurons are highly differentiated and play distinctive functions even in the same brain region. We found a novel cadherin-related neuronal receptor (Cnr) gene family by studying Fyn-binding activity in mouse brain. CNR1 protein is located in the synaptic junction and forms a complex with Fyn. Sequence analysis of eight Cnr products of approximately 20 genes indicates that these comprise a novel cadherin family of the cadherin superfamily. The expression patterns of each member of this novel family were grossly similar to each other but restricted to subpopulations of neurons of the same type. The diversity of the Cnr family genes suggests that there are molecular mechanisms that govern highly differentiated neural networks in the mammalian CNS.
Kohmura
N
N
Laboratory of Neurobiology and Behavioral Genetics, National Institute for Physiological Sciences, Myodaiji, Okazaki, Japan.
Senzaki
K
K
Hamada
S
S
Kai
N
N
Yasuda
R
R
Watanabe
M
M
Ishii
H
H
Yasuda
M
M
Mishina
M
M
Yagi
T
T
D000818:Animals; D001483:Base Sequence; D001923:Brain Chemistry / Q000235:genetics; D015820:Cadherins / Q000032:analysis / Q000235:genetics*; D015816:Cell Adhesion Molecules, Neuronal; D014644:Genetic Variation; D051379:Mice; D008810:Mice, Inbred C57BL; D008969:Molecular Sequence Data; D005810:Multigene Family / Q000235:genetics; D019579:Neocortex / Q000737:chemistry; D009474:Neurons / Q000737:chemistry*; D009479:Neuropeptides / Q000032:analysis / Q000235:genetics*; D009830:Olfactory Bulb / Q000737:chemistry; D000091363:Protocadherins; D011956:Receptors, Cell Surface; D017386:Sequence Homology, Amino Acid; D013569:Synapses / Q000737:chemistry*
D015820:Cadherins; D015816:Cell Adhesion Molecules, Neuronal; D009479:Neuropeptides; C113143:Pcdha4 protein, mouse; C113144:Pcdha6 protein, mouse; D000091363:Protocadherins; D011956:Receptors, Cell Surface