ISDA: 6JK8

Deposition Date 2019-02-27

Release Date 2020-03-04

Last Version Date 2025-07-02

Entry Detail

PDB ID:

6JK8

Keywords:

SIGNALING PROTEIN

Title:

Cryo-EM structure of the full-length human IGF-1R in complex with insulin

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Homo sapiens

Method Details:

Experimental Method:

ELECTRON MICROSCOPY

Resolution:

5.00 Å

Aggregation State:

PARTICLE

Reconstruction Method:

SINGLE PARTICLE

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Insulin-like growth factor 1 receptor
Gene (Uniprot):IGF1R
Chain IDs:A, B
Chain Length:1367
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:P08069 Pfam ID:PF01030, PF07714, PF00757 EC:2.7.10.1

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Insulin
Gene (Uniprot):INS
Chain IDs:C, D
Chain Length:110
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:P01308 Pfam ID:PF00049

Ligand Molecules

NAG

Primary Citation

Visualization of Ligand-Bound Ectodomain Assembly in the Full-Length Human IGF-1 Receptor by Cryo-EM Single-Particle Analysis.

Zhang, X, Yu, D, Sun, J, Wu, Y, Gong, J, Li, X, Liu, L, Liu, S, Liu, J, Wu, Y, Li, D, Ma, Y, Han, X, Zhu, Y, Wu, Z, Wang, Y, Ouyang, Q, Wang, T.Show

Structure 28 555 561.e4 (2020)

PMID: 32275863 DOI: 10.1016/j.str.2020.03.007

Abstact

Tyrosine kinase receptor of insulin-like growth factor 1 receptor (IGF-1R) and insulin receptor (IR) bind to hormones, such as insulin, IGF-1, and IGF-2, and transduces the signals across the cell membrane. However, the complete structure of the receptor and the signal transduction mechanism remains unclear. Here, we report the cryo-EM structure of the ligand-bound ectodomain in the full-length human IGF-1R. We reconstructed the IGF-1R/insulin complex at 4.7 Å and the IGF-1R/IGF-1 complex at 7.7 Å. Our structures reveal that only one insulin or one IGF-1 molecule binds to and activates the full-length human IGF-1R receptor.

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