7N86

Crystal Structure of Human Protocadherin-24 EC1-2 Form II

PDB DOI: https://doi.org/10.2210/pdb7N86/pdb

Classification: CELL ADHESION
Organism(s): Homo sapiens
Expression System: Homo sapiens
Mutation(s): No

Deposited: 2021-06-13 Released: 2021-09-01
Deposition Author(s): Modak, D., Gray, M.E., Sotomayor, M.
Funding Organization(s): National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 3.17 Å
R-Value Free: 0.290
R-Value Work: 0.213

wwPDB Validation 3D Report Full Report

This is version 1.2 of the entry. See complete history.

Literature

Heterophilic and homophilic cadherin interactions in intestinal intermicrovillar links are species dependent.

Gray, M.E., Johnson, Z.R., Modak, D., Tamilselvan, E., Tyska, M.J., Sotomayor, M.

(2021) PLoS Biol 19: e3001463-e3001463

PubMed: 34871294 Search on PubMedSearch on PubMed Central
DOI: https://doi.org/10.1371/journal.pbio.3001463
Primary Citation of Related Structures:
7N86

PubMed Abstract:
Enterocytes are specialized epithelial cells lining the luminal surface of the small intestine that build densely packed arrays of microvilli known as brush borders. These microvilli drive nutrient absorption and are arranged in a hexagonal pattern maintained by intermicrovillar links formed by 2 nonclassical members of the cadherin superfamily of calcium-dependent cell adhesion proteins: protocadherin-24 (PCDH24, also known as CDHR2) and the mucin-like protocadherin (CDHR5). The extracellular domains of these proteins are involved in heterophilic and homophilic interactions important for intermicrovillar function, yet the structural determinants of these interactions remain unresolved. Here, we present X-ray crystal structures of the PCDH24 and CDHR5 extracellular tips and analyze their species-specific features relevant for adhesive interactions. In parallel, we use binding assays to identify the PCDH24 and CDHR5 domains involved in both heterophilic and homophilic adhesion for human and mouse proteins. Our results suggest that homophilic and heterophilic interactions involving PCDH24 and CDHR5 are species dependent with unique and distinct minimal adhesive units.

Organizational Affiliation

Ohio State Biochemistry Program, The Ohio State University, Columbus, Ohio, United States of America.

Macromolecule Content

Total Structure Weight: 107.58 kDa
Atom Count: 6,720
Modelled Residue Count: 848
Deposited Residue Count: 952
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cadherin-related family member 2	A, B, C, D	238	Homo sapiens	Mutation(s): 0 Gene Names: CDHR2, PCDH24, PCLKC
UniProt & NIH Common Fund Data Resources
Find proteins for Q9BYE9 (Homo sapiens) Explore Q9BYE9 Go to UniProtKB: Q9BYE9
PHAROS: Q9BYE9 GTEx: ENSG00000074276
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q9BYE9
Sequence Annotations Expand
Reference Sequence

Oligosaccharides

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Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	E, F, G, H	3		N-Glycosylation	Interactions Focus chain E Focus chain F Focus chain G Focus chain H Interactions & Density Focus chain E Focus chain F Focus chain G Focus chain H
Glycosylation Resources
GlyTouCan: G15407YE GlyCosmos: G15407YE GlyGen: G15407YE

Small Molecules

Ligands 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
IOD Query on IOD Download Ideal Coordinates CCD File SDF format, chain R [auth B] MOL2 format, chain R [auth B]	R [auth B]	IODIDE ION I XMBWDFGMSWQBCA-UHFFFAOYSA-M		Interactions Focus chain R [auth B] Interactions & Density Focus chain R [auth B]
TRS Query on TRS Download Ideal Coordinates CCD File SDF format, chain I [auth A] MOL2 format, chain I [auth A]	I [auth A]	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL C₄ H₁₂ N O₃ LENZDBCJOHFCAS-UHFFFAOYSA-O		Interactions Focus chain I [auth A] Interactions & Density Focus chain I [auth A]
CA Query on CA Download Ideal Coordinates CCD File SDF format, chain BA [auth D] SDF format, chain CA [auth D] SDF format, chain DA [auth D] SDF format, chain EA [auth D] SDF format, chain K [auth A] SDF format, chain O [auth B] SDF format, chain P [auth B] SDF format, chain Q [auth B] SDF format, chain W [auth C] SDF format, chain J [auth A] SDF format, chain L [auth A] SDF format, chain U [auth C] SDF format, chain V [auth C] SDF format, chain X [auth C] MOL2 format, chain BA [auth D] MOL2 format, chain CA [auth D] MOL2 format, chain DA [auth D] MOL2 format, chain EA [auth D] MOL2 format, chain K [auth A] MOL2 format, chain O [auth B] MOL2 format, chain P [auth B] MOL2 format, chain Q [auth B] MOL2 format, chain W [auth C] MOL2 format, chain J [auth A] MOL2 format, chain L [auth A] MOL2 format, chain U [auth C] MOL2 format, chain V [auth C] MOL2 format, chain X [auth C]	BA [auth D] CA [auth D] DA [auth D] EA [auth D] J [auth A] BA [auth D], CA [auth D], DA [auth D], EA [auth D], J [auth A], K [auth A], L [auth A], O [auth B], P [auth B], Q [auth B], U [auth C], V [auth C], W [auth C], X [auth C]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N		Interactions Focus chain BA [auth D] Focus chain CA [auth D] Focus chain DA [auth D] Focus chain EA [auth D] Focus chain J [auth A] Focus chain K [auth A] Focus chain L [auth A] Focus chain O [auth B] Focus chain P [auth B] Focus chain Q [auth B] Focus chain U [auth C] Focus chain V [auth C] Focus chain W [auth C] Focus chain X [auth C] Interactions & Density Focus chain BA [auth D] Focus chain CA [auth D] Focus chain DA [auth D] Focus chain EA [auth D] Focus chain J [auth A] Focus chain K [auth A] Focus chain L [auth A] Focus chain O [auth B] Focus chain P [auth B] Focus chain Q [auth B] Focus chain U [auth C] Focus chain V [auth C] Focus chain W [auth C] Focus chain X [auth C]
CL Query on CL Download Ideal Coordinates CCD File SDF format, chain AA [auth C] SDF format, chain Y [auth C] SDF format, chain Z [auth C] SDF format, chain FA [auth D] SDF format, chain M [auth A] SDF format, chain S [auth B] MOL2 format, chain AA [auth C] MOL2 format, chain Y [auth C] MOL2 format, chain Z [auth C] MOL2 format, chain FA [auth D] MOL2 format, chain M [auth A] MOL2 format, chain S [auth B]	AA [auth C] FA [auth D] M [auth A] S [auth B] Y [auth C] AA [auth C], FA [auth D], M [auth A], S [auth B], Y [auth C], Z [auth C]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M		Interactions Focus chain AA [auth C] Focus chain FA [auth D] Focus chain M [auth A] Focus chain S [auth B] Focus chain Y [auth C] Focus chain Z [auth C] Interactions & Density Focus chain AA [auth C] Focus chain FA [auth D] Focus chain M [auth A] Focus chain S [auth B] Focus chain Y [auth C] Focus chain Z [auth C]
NA Query on NA Download Ideal Coordinates CCD File SDF format, chain N [auth A] SDF format, chain T [auth B] MOL2 format, chain N [auth A] MOL2 format, chain T [auth B]	N [auth A], T [auth B]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N		Interactions Focus chain N [auth A] Focus chain T [auth B] Interactions & Density Focus chain N [auth A] Focus chain T [auth B]