Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2006 Nov 3;281(44):33650-63.
doi: 10.1074/jbc.M603298200. Epub 2006 Aug 17.

Structure of the Cadherin-Related Neuronal Receptor/Protocadherin-Alpha First Extracellular Cadherin Domain Reveals Diversity Across Cadherin Families

Affiliations
Free article

Structure of the Cadherin-Related Neuronal Receptor/Protocadherin-Alpha First Extracellular Cadherin Domain Reveals Diversity Across Cadherin Families

Hirofumi Morishita et al. J Biol Chem. .
Free article

Abstract

The recent explosion in genome sequencing has revealed the great diversity of the cadherin superfamily. Within the superfamily, protocadherins, which are expressed mainly in the nervous system, constitute the largest subgroup. Nevertheless, the structures of only the classical cadherins are known. Thus, to broaden our understanding of the adhesion repertoire of the cadherin superfamily, we determined the structure of the N-terminal first extracellular cadherin domain of the cadherin-related neuronal receptor/protocadherin-alpha4. The hydrophobic pocket essential for homophilic adhesiveness in the classical cadherins was not found, and the functional significance of this structural domain was supported by exchanging the first extracellular cadherin domains of protocadherin and classical cadherin. Moreover, potentially crucial variations were observed mainly in the loop regions. These included the protocadherin-specific disulfide-bonded Cys-X(5)-Cys motif, which showed Ca(2+)-induced chemical shifts, and the RGD motif, which has been suggested to be involved in heterophilic cell adhesion via the active form of beta1 integrin. Our findings reveal that the adhesion repertoire of the cadherin superfamily is far more divergent than would be predicted by studying the classical cadherins alone.

Similar articles

See all similar articles

Cited by 36 articles

See all "Cited by" articles

Publication types

Associated data

LinkOut - more resources

Feedback