7RGF

Protocadherin gammaC4 EC1-4 crystal structure disrupted trans interface

PDB DOI: https://doi.org/10.2210/pdb7RGF/pdb

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

Deposited: 2021-07-15 Released: 2022-03-16
Deposition Author(s): Goodman, K.M., Mannepalli, S., Honig, B., Shapiro, L.
Funding Organization(s): National Institutes of Health/National Institute of Mental Health (NIH/NIMH)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.40 Å
R-Value Free: 0.240
R-Value Work: 0.196
R-Value Observed: 0.198

wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.1 of the entry. See complete history.

Literature

How clustered protocadherin binding specificity is tuned for neuronal self-/nonself-recognition.

Goodman, K.M., Katsamba, P.S., Rubinstein, R., Ahlsen, G., Bahna, F., Mannepalli, S., Dan, H., Sampogna, R.V., Shapiro, L., Honig, B.

(2022) Elife 11

PubMed: 35253643 Search on PubMedSearch on PubMed Central
DOI: https://doi.org/10.7554/eLife.72416
Primary Citation of Related Structures:
7JGZ, 7RGF

PubMed Abstract:
The stochastic expression of fewer than 60 clustered protocadherin (cPcdh) isoforms provides diverse identities to individual vertebrate neurons and a molecular basis for self-/nonself-discrimination. cPcdhs form chains mediated by alternating cis and trans interactions between apposed membranes, which has been suggested to signal self-recognition. Such a mechanism requires that cPcdh cis dimers form promiscuously to generate diverse recognition units, and that trans interactions have precise specificity so that isoform mismatches terminate chain growth. However, the extent to which cPcdh interactions fulfill these requirements has not been definitively demonstrated. Here, we report biophysical experiments showing that cPcdh cis interactions are promiscuous, but with preferences favoring formation of heterologous cis dimers. Trans homophilic interactions are remarkably precise, with no evidence for heterophilic interactions between different isoforms. A new C-type cPcdh crystal structure and mutagenesis data help to explain these observations. Overall, the interaction characteristics we report for cPcdhs help explain their function in neuronal self-/nonself-discrimination.

Organizational Affiliation

Zuckerman Mind, Brain and Behavior Institute, Columbia University, New York, United States.

Macromolecule Content

Total Structure Weight: 98.92 kDa
Atom Count: 6,736
Modelled Residue Count: 836
Deposited Residue Count: 858
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protocadherin gamma C4	A, B	429	Mus musculus	Mutation(s): 0 Gene Names: Pcdhgc4
UniProt
Find proteins for Q91XX0 (Mus musculus) Explore Q91XX0 Go to UniProtKB: Q91XX0
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q91XX0
Sequence Annotations Expand
Reference Sequence

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose	C	8		N-Glycosylation	Interactions Focus chain C Interactions & Density Focus chain C
Glycosylation Resources
GlyTouCan: G12398HZ GlyCosmos: G12398HZ GlyGen: G12398HZ

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose	D	7		N-Glycosylation	Interactions Focus chain D Interactions & Density Focus chain D
Glycosylation Resources
GlyTouCan: G07483YN GlyCosmos: G07483YN GlyGen: G07483YN

Small Molecules

Ligands 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
NAG Query on NAG Download Ideal Coordinates CCD File SDF format, chain G [auth A] SDF format, chain W [auth B] MOL2 format, chain G [auth A] MOL2 format, chain W [auth B]	G [auth A], W [auth B]	2-acetamido-2-deoxy-beta-D-glucopyranose C₈ H₁₅ N O₆ OVRNDRQMDRJTHS-FMDGEEDCSA-N		Interactions Focus chain G [auth A] Focus chain W [auth B] Interactions & Density Focus chain G [auth A] Focus chain W [auth B]
MAN Query on MAN Download Ideal Coordinates CCD File SDF format, chain E [auth A] SDF format, chain F [auth A] SDF format, chain U [auth B] SDF format, chain V [auth B] MOL2 format, chain E [auth A] MOL2 format, chain F [auth A] MOL2 format, chain U [auth B] MOL2 format, chain V [auth B]	E [auth A], F [auth A], U [auth B], V [auth B]	alpha-D-mannopyranose C₆ H₁₂ O₆ WQZGKKKJIJFFOK-PQMKYFCFSA-N		Interactions Focus chain E [auth A] Focus chain F [auth A] Focus chain U [auth B] Focus chain V [auth B] Interactions & Density Focus chain E [auth A] Focus chain F [auth A] Focus chain U [auth B] Focus chain V [auth B]
GOL Query on GOL Download Ideal Coordinates CCD File SDF format, chain H [auth A] MOL2 format, chain H [auth A]	H [auth A]	GLYCEROL C₃ H₈ O₃ PEDCQBHIVMGVHV-UHFFFAOYSA-N		Interactions Focus chain H [auth A] Interactions & Density Focus chain H [auth A]
CA Query on CA Download Ideal Coordinates CCD File SDF format, chain AA [auth B] SDF format, chain BA [auth B] SDF format, chain CA [auth B] SDF format, chain DA [auth B] SDF format, chain EA [auth B] SDF format, chain FA [auth B] SDF format, chain I [auth A] SDF format, chain J [auth A] SDF format, chain K [auth A] SDF format, chain L [auth A] SDF format, chain M [auth A] SDF format, chain N [auth A] SDF format, chain O [auth A] SDF format, chain P [auth A] SDF format, chain Q [auth A] SDF format, chain X [auth B] SDF format, chain Y [auth B] SDF format, chain Z [auth B] MOL2 format, chain AA [auth B] MOL2 format, chain BA [auth B] MOL2 format, chain CA [auth B] MOL2 format, chain DA [auth B] MOL2 format, chain EA [auth B] MOL2 format, chain FA [auth B] MOL2 format, chain I [auth A] MOL2 format, chain J [auth A] MOL2 format, chain K [auth A] MOL2 format, chain L [auth A] MOL2 format, chain M [auth A] MOL2 format, chain N [auth A] MOL2 format, chain O [auth A] MOL2 format, chain P [auth A] MOL2 format, chain Q [auth A] MOL2 format, chain X [auth B] MOL2 format, chain Y [auth B] MOL2 format, chain Z [auth B]	AA [auth B] BA [auth B] CA [auth B] DA [auth B] EA [auth B] AA [auth B], BA [auth B], CA [auth B], DA [auth B], EA [auth B], FA [auth B], I [auth A], J [auth A], K [auth A], L [auth A], M [auth A], N [auth A], O [auth A], P [auth A], Q [auth A], X [auth B], Y [auth B], Z [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N		Interactions Focus chain AA [auth B] Focus chain BA [auth B] Focus chain CA [auth B] Focus chain DA [auth B] Focus chain EA [auth B] Focus chain FA [auth B] Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth A] Focus chain L [auth A] Focus chain M [auth A] Focus chain N [auth A] Focus chain O [auth A] Focus chain P [auth A] Focus chain Q [auth A] Focus chain X [auth B] Focus chain Y [auth B] Focus chain Z [auth B] Interactions & Density Focus chain AA [auth B] Focus chain BA [auth B] Focus chain CA [auth B] Focus chain DA [auth B] Focus chain EA [auth B] Focus chain FA [auth B] Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth A] Focus chain L [auth A] Focus chain M [auth A] Focus chain N [auth A] Focus chain O [auth A] Focus chain P [auth A] Focus chain Q [auth A] Focus chain X [auth B] Focus chain Y [auth B] Focus chain Z [auth B]
CL Query on CL Download Ideal Coordinates CCD File SDF format, chain GA [auth B] SDF format, chain HA [auth B] SDF format, chain IA [auth B] SDF format, chain JA [auth B] SDF format, chain R [auth A] SDF format, chain S [auth A] SDF format, chain T [auth A] MOL2 format, chain GA [auth B] MOL2 format, chain HA [auth B] MOL2 format, chain IA [auth B] MOL2 format, chain JA [auth B] MOL2 format, chain R [auth A] MOL2 format, chain S [auth A] MOL2 format, chain T [auth A]	GA [auth B] HA [auth B] IA [auth B] JA [auth B] R [auth A] GA [auth B], HA [auth B], IA [auth B], JA [auth B], R [auth A], S [auth A], T [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M		Interactions Focus chain GA [auth B] Focus chain HA [auth B] Focus chain IA [auth B] Focus chain JA [auth B] Focus chain R [auth A] Focus chain S [auth A] Focus chain T [auth A] Interactions & Density Focus chain GA [auth B] Focus chain HA [auth B] Focus chain IA [auth B] Focus chain JA [auth B] Focus chain R [auth A] Focus chain S [auth A] Focus chain T [auth A]