ISDA: 6SYT

Deposition Date 2019-10-01

Release Date 2019-12-11

Last Version Date 2024-05-22

Entry Detail

PDB ID:

6SYT

Keywords:

SIGNALING PROTEIN

Title:

Structure of the SMG1-SMG8-SMG9 complex

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Homo sapiens

Method Details:

Experimental Method:

ELECTRON MICROSCOPY

Resolution:

3.45 Å

Aggregation State:

PARTICLE

Reconstruction Method:

SINGLE PARTICLE

Download Validation Report

Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:SMG1,Serine/threonine-protein kinase SMG1,SMG1,Serine/threonine-protein kinase SMG1,SMG1,Serine/threonine-protein kinase SMG1,SMG1,Serine/threonine-protein kinase SMG1,SMG1,Serine/threonine-protein kinase SMG1
Gene (Uniprot):SMG1
Mutagens:D2335A,D2335A,D2335A,D2335A,D2335A,D2335A,D2335A,D2335A,D2335A,D2335A
Chain IDs:A
Chain Length:3712
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:Q96Q15 Pfam ID:PF15785, PF00454, PF02260 EC:2.7.11.1

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Protein SMG8
Gene (Uniprot):SMG8
Chain IDs:B
Chain Length:991
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:Q8ND04 Pfam ID:PF10220

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Protein SMG9
Gene (Uniprot):SMG9
Chain IDs:C
Chain Length:520
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:Q9H0W8

Ligand Molecules

ATP

IHP

Primary Citation

InsP6binding to PIKK kinases revealed by the cryo-EM structure of an SMG1-SMG8-SMG9 complex.

Gat, Y, Schuller, J.M, Lingaraju, M, Weyher, E, Bonneau, F, Strauss, M, Murray, P.J, Conti, E.Show

Nat.Struct.Mol.Biol. 26 1089 1093 (2019)

PMID: 31792449 DOI: 10.1038/s41594-019-0342-7

Abstact

We report the 3.45-Å resolution cryo-EM structure of human SMG1-SMG8-SMG9, a phosphatidylinositol-3-kinase (PI(3)K)-related protein kinase (PIKK) complex central to messenger RNA surveillance. Structural and MS analyses reveal the presence of inositol hexaphosphate (InsP6) in the SMG1 kinase. We show that the InsP6-binding site is conserved in mammalian target of rapamycin (mTOR) and potentially other PIKK members, and that it is required for optimal in vitro phosphorylation of both SMG1 and mTOR substrates.

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Protein

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Disease

Primary Citation of related structures

Abstact

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