7A5O

Human MUC2 AAs 21-1397

PDB DOI: https://doi.org/10.2210/pdb7A5O/pdb
EM Map EMD-10517: EMDB EMDataResource

Classification: STRUCTURAL PROTEIN
Organism(s): Homo sapiens
Expression System: Homo sapiens
Mutation(s): No

Deposited: 2020-08-21 Released: 2020-10-21
Deposition Author(s): Javitt, G., Khmelnitsky, L., Albert, L., Elad, N., Ilani, T., Diskin, R., Fass, D.

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 2.95 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

wwPDB Validation 3D Report Full Report

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

Literature

Assembly Mechanism of Mucin and von Willebrand Factor Polymers.

Javitt, G., Khmelnitsky, L., Albert, L., Bigman, L.S., Elad, N., Morgenstern, D., Ilani, T., Levy, Y., Diskin, R., Fass, D.

(2020) Cell 183: 717

PubMed: 33031746 Search on PubMedSearch on PubMed Central
DOI: https://doi.org/10.1016/j.cell.2020.09.021
Primary Citation of Related Structures:
6TM2, 6TM6, 7A5O

PubMed Abstract:
The respiratory and intestinal tracts are exposed to physical and biological hazards accompanying the intake of air and food. Likewise, the vasculature is threatened by inflammation and trauma. Mucin glycoproteins and the related von Willebrand factor guard the vulnerable cell layers in these diverse systems. Colon mucins additionally house and feed the gut microbiome. Here, we present an integrated structural analysis of the intestinal mucin MUC2. Our findings reveal the shared mechanism by which complex macromolecules responsible for blood clotting, mucociliary clearance, and the intestinal mucosal barrier form protective polymers and hydrogels. Specifically, cryo-electron microscopy and crystal structures show how disulfide-rich bridges and pH-tunable interfaces control successive assembly steps in the endoplasmic reticulum and Golgi apparatus. Remarkably, a densely O-glycosylated mucin domain performs an organizational role in MUC2. The mucin assembly mechanism and its adaptation for hemostasis provide the foundation for rational manipulation of barrier function and coagulation.

Organizational Affiliation

Department of Structural Biology, Weizmann Institute of Science, Rehovot 7610001, Israel.

Macromolecule Content

Total Structure Weight: 1,535.15 kDa
Atom Count: 55,254
Modelled Residue Count: 7,230
Deposited Residue Count: 13,830
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Mucin-2	A, B, C, D, E A, B, C, D, E, F, G, H, I, J	1,383	Homo sapiens	Mutation(s): 0 Gene Names: MUC2, SMUC
UniProt & NIH Common Fund Data Resources
Find proteins for Q02817 (Homo sapiens) Explore Q02817 Go to UniProtKB: Q02817
PHAROS: Q02817
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q02817
Sequence Annotations Expand
Reference Sequence

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	K, L, M, N, O K, L, M, N, O, P	2		N-Glycosylation	Interactions Focus chain K Focus chain L Focus chain M Focus chain N Focus chain O Focus chain P Interactions & Density Focus chain K Focus chain L Focus chain M Focus chain N Focus chain O Focus chain P
Glycosylation Resources
GlyTouCan: G42666HT GlyCosmos: G42666HT GlyGen: G42666HT

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
NAG Query on NAG Download Ideal Coordinates CCD File SDF format, chain AA [auth B] SDF format, chain CB [auth I] SDF format, chain DB [auth I] SDF format, chain EA [auth C] SDF format, chain FA [auth C] SDF format, chain OA [auth E] SDF format, chain PA [auth E] SDF format, chain V [auth A] SDF format, chain VA [auth G] SDF format, chain W [auth A] SDF format, chain WA [auth G] SDF format, chain Z [auth B] MOL2 format, chain AA [auth B] MOL2 format, chain CB [auth I] MOL2 format, chain DB [auth I] MOL2 format, chain EA [auth C] MOL2 format, chain FA [auth C] MOL2 format, chain OA [auth E] MOL2 format, chain PA [auth E] MOL2 format, chain V [auth A] MOL2 format, chain VA [auth G] MOL2 format, chain W [auth A] MOL2 format, chain WA [auth G] MOL2 format, chain Z [auth B]	AA [auth B] CB [auth I] DB [auth I] EA [auth C] FA [auth C] AA [auth B], CB [auth I], DB [auth I], EA [auth C], FA [auth C], OA [auth E], PA [auth E], V [auth A], VA [auth G], W [auth A], WA [auth G], Z [auth B]	2-acetamido-2-deoxy-beta-D-glucopyranose C₈ H₁₅ N O₆ OVRNDRQMDRJTHS-FMDGEEDCSA-N		Interactions Focus chain AA [auth B] Focus chain CB [auth I] Focus chain DB [auth I] Focus chain EA [auth C] Focus chain FA [auth C] Focus chain OA [auth E] Focus chain PA [auth E] Focus chain V [auth A] Focus chain VA [auth G] Focus chain W [auth A] Focus chain WA [auth G] Focus chain Z [auth B] Interactions & Density Focus chain AA [auth B] Focus chain CB [auth I] Focus chain DB [auth I] Focus chain EA [auth C] Focus chain FA [auth C] Focus chain OA [auth E] Focus chain PA [auth E] Focus chain V [auth A] Focus chain VA [auth G] Focus chain W [auth A] Focus chain WA [auth G] Focus chain Z [auth B]
CA Query on CA Download Ideal Coordinates CCD File SDF format, chain AB [auth I] SDF format, chain BA [auth C] SDF format, chain BB [auth I] SDF format, chain CA [auth C] SDF format, chain DA [auth C] SDF format, chain EB [auth J] SDF format, chain FB [auth J] SDF format, chain GA [auth D] SDF format, chain HA [auth D] SDF format, chain IA [auth D] SDF format, chain JA [auth E] SDF format, chain KA [auth E] SDF format, chain LA [auth E] SDF format, chain MA [auth E] SDF format, chain NA [auth E] SDF format, chain Q [auth A] SDF format, chain QA [auth F] SDF format, chain R [auth A] SDF format, chain RA [auth F] SDF format, chain S [auth A] SDF format, chain SA [auth G] SDF format, chain T [auth A] SDF format, chain TA [auth G] SDF format, chain U [auth A] SDF format, chain UA [auth G] SDF format, chain X [auth B] SDF format, chain XA [auth H] SDF format, chain Y [auth B] SDF format, chain YA [auth H] SDF format, chain ZA [auth H] MOL2 format, chain AB [auth I] MOL2 format, chain BA [auth C] MOL2 format, chain BB [auth I] MOL2 format, chain CA [auth C] MOL2 format, chain DA [auth C] MOL2 format, chain EB [auth J] MOL2 format, chain FB [auth J] MOL2 format, chain GA [auth D] MOL2 format, chain HA [auth D] MOL2 format, chain IA [auth D] MOL2 format, chain JA [auth E] MOL2 format, chain KA [auth E] MOL2 format, chain LA [auth E] MOL2 format, chain MA [auth E] MOL2 format, chain NA [auth E] MOL2 format, chain Q [auth A] MOL2 format, chain QA [auth F] MOL2 format, chain R [auth A] MOL2 format, chain RA [auth F] MOL2 format, chain S [auth A] MOL2 format, chain SA [auth G] MOL2 format, chain T [auth A] MOL2 format, chain TA [auth G] MOL2 format, chain U [auth A] MOL2 format, chain UA [auth G] MOL2 format, chain X [auth B] MOL2 format, chain XA [auth H] MOL2 format, chain Y [auth B] MOL2 format, chain YA [auth H] MOL2 format, chain ZA [auth H]	AB [auth I] BA [auth C] BB [auth I] CA [auth C] DA [auth C] AB [auth I], BA [auth C], BB [auth I], CA [auth C], DA [auth C], EB [auth J], FB [auth J], GA [auth D], HA [auth D], IA [auth D], JA [auth E], KA [auth E], LA [auth E], MA [auth E], NA [auth E], Q [auth A], QA [auth F], R [auth A], RA [auth F], S [auth A], SA [auth G], T [auth A], TA [auth G], U [auth A], UA [auth G], X [auth B], XA [auth H], Y [auth B], YA [auth H], ZA [auth H]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N		Interactions Focus chain AB [auth I] Focus chain BA [auth C] Focus chain BB [auth I] Focus chain CA [auth C] Focus chain DA [auth C] Focus chain EB [auth J] Focus chain FB [auth J] Focus chain GA [auth D] Focus chain HA [auth D] Focus chain IA [auth D] Focus chain JA [auth E] Focus chain KA [auth E] Focus chain LA [auth E] Focus chain MA [auth E] Focus chain NA [auth E] Focus chain Q [auth A] Focus chain QA [auth F] Focus chain R [auth A] Focus chain RA [auth F] Focus chain S [auth A] Focus chain SA [auth G] Focus chain T [auth A] Focus chain TA [auth G] Focus chain U [auth A] Focus chain UA [auth G] Focus chain X [auth B] Focus chain XA [auth H] Focus chain Y [auth B] Focus chain YA [auth H] Focus chain ZA [auth H] Interactions & Density Focus chain AB [auth I] Focus chain BA [auth C] Focus chain BB [auth I] Focus chain CA [auth C] Focus chain DA [auth C] Focus chain EB [auth J] Focus chain FB [auth J] Focus chain GA [auth D] Focus chain HA [auth D] Focus chain IA [auth D] Focus chain JA [auth E] Focus chain KA [auth E] Focus chain LA [auth E] Focus chain MA [auth E] Focus chain NA [auth E] Focus chain Q [auth A] Focus chain QA [auth F] Focus chain R [auth A] Focus chain RA [auth F] Focus chain S [auth A] Focus chain SA [auth G] Focus chain T [auth A] Focus chain TA [auth G] Focus chain U [auth A] Focus chain UA [auth G] Focus chain X [auth B] Focus chain XA [auth H] Focus chain Y [auth B] Focus chain YA [auth H] Focus chain ZA [auth H]