38KI | pdb_000038ki

Cx46 Dual-Channel Assembly - Offset

• PDB DOI: https://doi.org/10.2210/pdb38KI/pdb
• EM Map EMD-78875: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Bos taurus
• Mutation(s): No 


• Deposited: 2026-08-31 Released: 2026-10-28 
• Deposition Author(s): Garrels, C.S., Reichow, S.L.
• Funding Organization(s): National Institutes of Health/National Eye Institute (NIH/NEI)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.43 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Starting Model: experimental

Literature

Lipids intercalate and mediate multi-channel assemblies of connexin-46/50 gap junctions

Garrels, C.S., Myers, J.B., Souza, S.A., Jarodsky, J.M., Reichow, S.L.

(2026) Nat Commun 

• DOI: https://doi.org/10.1038/s41467-026-78903-0

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 24-mer - A24 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 689.99 kDa 
• Atom Count: 37,174 
• Modeled Residue Count: 4,416 
• Deposited Residue Count: 5,352 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Gap junction alpha-3 protein	A, B, C, D, E, F, G [auth I], H [auth J], I [auth K], J [auth L], K [auth G], L [auth H], M, N, O, P, Q, R, S, T, U, V, W, X	223	Bos taurus	Mutation(s): 0
UniProt
Find proteins for P41987 (Bos taurus) Explore P41987  Go to UniProtKB:  P41987

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MC3 (Subject of Investigation/LOI)	AA [auth A], AB [auth F], AC [auth M], AD [auth R], AE [auth X], BA [auth A], BB [auth F], BC [auth M], BD [auth R], BE [auth X], CA [auth A], CB [auth F], CC [auth M], CD [auth R], DA [auth A], DB [auth F], DC [auth M], DD [auth R], EA [auth B], EB [auth I], EC [auth M], ED [auth R], FA [auth B], FB [auth I], FC [auth M], FD [auth R], GA [auth B], GB [auth I], GC [auth N], GD [auth S], HA [auth B], HB [auth J], HC [auth N], HD [auth S], IA [auth B], IB [auth J], IC [auth N], ID [auth S], JA [auth C], JB [auth J], JC [auth N], JD [auth T], KA [auth C], KB [auth K], KC [auth N], KD [auth T], LA [auth C], LB [auth K], LC [auth O], LD [auth T], MA [auth C], MB [auth K], MC [auth O], MD [auth U], NA [auth C], NB [auth K], NC [auth O], ND [auth U], OA [auth D], OB [auth K], OC [auth O], OD [auth U], PA [auth D], PB [auth L], PC [auth O], PD [auth U], QA [auth D], QB [auth L], QC [auth P], QD [auth U], RA [auth D], RB [auth L], RC [auth P], RD [auth V], SA [auth E], SB [auth L], SC [auth P], SD [auth V], TA [auth E], TB [auth G], TC [auth P], TD [auth V], UA [auth E], UB [auth G], UC [auth Q], UD [auth V], VA [auth E], VB [auth H], VC [auth Q], VD [auth W], WA [auth E], WB [auth H], WC [auth Q], WD [auth W], XA [auth F], XB [auth H], XC [auth Q], XD [auth X], Y [auth A], YA [auth F], YB [auth H], YC [auth Q], YD [auth X], Z [auth A], ZA [auth F], ZB [auth H], ZC [auth R], ZD [auth X]	1,2-DIMYRISTOYL-RAC-GLYCERO-3-PHOSPHOCHOLINE C36 H72 N O8 P CITHEXJVPOWHKC-UUWRZZSWSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.43 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC	4.7.1

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-10-28 
Deposition Author(s): Garrels, C.S., Reichow, S.L.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Eye Institute (NIH/NEI)	United States	R35GM124779

Revision History  

• Version 1.0: 2026-10-28
  Type: Initial release