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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Acta+Crystallogr+F+Struct+Biol+Commun
2015 ; 71
(Pt 4
): 371-80
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The X-ray structure of human P-cadherin EC1-EC2 in a closed conformation provides
insight into the type I cadherin dimerization pathway
#MMPMID25849494
Dalle Vedove A
; Lucarelli AP
; Nardone V
; Matino A
; Parisini E
Acta Crystallogr F Struct Biol Commun
2015[Apr]; 71
(Pt 4
): 371-80
PMID25849494
show ga
Cadherins are a large family of calcium-dependent proteins that mediate cellular
adherens junction formation and tissue morphogenesis. To date, the most studied
cadherins are those classified as classical, which are further divided into type
I or type II depending on selected sequence features. Unlike other members of the
classical cadherin family, a detailed structural characterization of P-cadherin
has not yet been fully obtained. Here, the high-resolution crystal structure
determination of the closed form of human P-cadherin EC1-EC2 is reported. The
structure shows a novel, monomeric packing arrangement that provides a further
snapshot in the yet-to-be-achieved complete description of the highly dynamic
cadherin dimerization pathway. Moreover, this is the first multidomain cadherin
fragment to be crystallized and structurally characterized in its closed
conformation that does not carry any extra N-terminal residues before the
naturally occurring aspartic acid at position 1. Finally, two clear alternate
conformations are observed for the critical Trp2 residue, suggestive of a
transient, metastable state. The P-cadherin structure and packing arrangement
shown here provide new and valuable information towards the complete structural
characterization of the still largely elusive cadherin dimerization pathway.