9I9G | pdb_00009i9g

Crystal structure of human eIF4A1 C-terminal domain in complex with hippuristanol

PDB DOI: https://doi.org/10.2210/pdb9I9G/pdb

Classification: TRANSLATION
Organism(s): Homo sapiens
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2025-02-06 Released: 2026-02-18
Deposition Author(s): Turnbull, A.P., Schmidt, T., Bushell, M.
Funding Organization(s): Cancer Research UK

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.70 Å
R-Value Free:
0.190 (Depositor), 0.198 (DCC)
R-Value Work:
0.149 (Depositor), 0.162 (DCC)

Starting Model: experimental
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Literature

The mechanism of selective eIF4A1-dependent translation

Schmidt, T., Turnbull, A.P., Bushell, M.

To be published.

Macromolecule Content

Total Structure Weight: 20.32 kDa
Atom Count: 1,585
Modeled Residue Count: 167
Deposited Residue Count: 170
Unique protein chains: 1

Macromolecules

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Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Eukaryotic initiation factor 4A-I	A	170	Homo sapiens	Mutation(s): 0 Gene Names: EIF4A1, DDX2A, EIF4A EC: 3.6.4.13
UniProt & NIH Common Fund Data Resources
Find proteins for P60842 (Homo sapiens) Explore P60842 Go to UniProtKB: P60842
PHAROS: P60842 GTEx: ENSG00000161960
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P60842
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
A1I1L (Subject of Investigation/LOI) Query on A1I1L Download:Ideal Coordinates CCD File SDF format, chain B [auth A] MOL2 format, chain B [auth A] mmCIF format, chain B [auth A]	B [auth A]	Hippuristanol C₂₈ H₄₆ O₅ HPHXKNOXVBFETI-SHCCRYCOSA-N		Interactions Focus chain B [auth A] Interactions & Density Focus chain B [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.70 Å
R-Value Free: 0.190 (Depositor), 0.198 (DCC)
R-Value Work: 0.149 (Depositor), 0.162 (DCC)

Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 31.199	α = 77.093
b = 32.974	β = 74.669
c = 37.781	γ = 81.044

Software Package:

Software Name	Purpose
REFMAC	refinement
xia2	data reduction
xia2	data scaling
PHASER	phasing

Structure Validation

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Entry History

& Funding Information

Deposition Data

Released Date: 2026-02-18

Deposition Author(s):

Funding Organization	Location	Grant Number
Cancer Research UK	United Kingdom	--

Revision History (Full details and data files)

Version 1.0: 2026-02-18
Type: Initial release

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.