7WRQ

Structure of Human IGF1/IGFBP3/ALS Ternary Complex

• PDB DOI: https://doi.org/10.2210/pdb7WRQ/pdb
• EM Map EMD-32735: EMDB EMDataResource

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


• Deposited: 2022-01-27 Released: 2022-08-10 
• Deposition Author(s): Kim, H., Fu, Y., Kim, H.M.
• Funding Organization(s): Other government

---

Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.60 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structural basis for assembly and disassembly of the IGF/IGFBP/ALS ternary complex

Kim, H., Fu, Y., Hong, H.J., Lee, S.G., Lee, D.S., Kim, H.M.

(2022) Nat Commun 13: 4434

• DOI: https://doi.org/10.1038/s41467-022-32214-2

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 101.24 kDa 
• Atom Count: 6,247 
• Modelled Residue Count: 798 
• Deposited Residue Count: 912 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Insulin-like growth factor-binding protein complex acid labile subunit	A	578	Homo sapiens	Mutation(s): 0  Gene Names: ALS
UniProt & NIH Common Fund Data Resources
Find proteins for P35858 (Homo sapiens) Explore P35858  Go to UniProtKB:  P35858
PHAROS:  P35858 GTEx:  ENSG00000099769
Glycosylation
Glycosylation Sites: 5		Go to GlyGen: P35858-1

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Insulin-like growth factor-binding protein 3	B	264	Homo sapiens	Mutation(s): 0  Gene Names: IGFBP3
UniProt & NIH Common Fund Data Resources
Find proteins for P17936 (Homo sapiens) Explore P17936  Go to UniProtKB:  P17936
PHAROS:  P17936 GTEx:  ENSG00000146674

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Isoform 3 of Insulin-like growth factor I	C	70	Homo sapiens	Mutation(s): 0  Gene Names: IGF1
UniProt & NIH Common Fund Data Resources
Find proteins for P05019 (Homo sapiens) Explore P05019  Go to UniProtKB:  P05019
PHAROS:  P05019 GTEx:  ENSG00000017427

Oligosaccharides

Help

Entity ID: 4
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	D	3		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE GlyCosmos:  G15407YE GlyGen:  G15407YE

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	E [auth A], F [auth A], G [auth A], H [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.60 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2022-08-10 
Deposition Author(s): Kim, H., Fu, Y., Kim, H.M.

---

Funding Organization	Location	Grant Number
Other government		Institure of Basic Science, IBS-R030-C1

Revision History  

• Version 1.0: 2022-08-10
  Type: Initial release
  
• Version 1.1: 2024-10-23
  Changes: Data collection, Structure summary