9PAW | pdb_00009paw

Cryo-EM structure of the engineered HflK/C variant stabilized in the closed conformation via disulfide bond crosslinking.

PDB DOI: https://doi.org/10.2210/pdb9PAW/pdb
EM Map EMD-71448: EMDB EMDataResource

Classification: CHAPERONE
Organism(s): Escherichia coli
Expression System: Escherichia coli BL21(DE3)
Mutation(s): No

Deposited: 2025-06-25 Released: 2026-03-04
Deposition Author(s): Iqbal, N., Ghanbarpour, A.
Funding Organization(s): Other private

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 2.93 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

wwPDB Validation 3D Report Full Report

Validation slider image for 9PAW

This is version 1.0 of the entry. See complete history.

Literature

Cryo-EM structure of the overexpressed HflK.HflC complex

Ghanbarpour, A., Sauer, R.T., Davis, J.H.

To be published.

Macromolecule Content

Total Structure Weight: 1,001.17 kDa
Atom Count: 51,822
Modeled Residue Count: 6,468
Deposited Residue Count: 9,036
Unique protein chains: 2

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein HflK	A [auth XA] C [auth XC] E [auth XE] G [auth XG] I [auth XI] A [auth XA], C [auth XC], E [auth XE], G [auth XG], I [auth XI], K [auth XK], M [auth XM], O [auth XO], Q [auth XQ], S [auth XS], U [auth XU], W [auth XW]	419	Escherichia coli	Mutation(s): 0 Gene Names: hflK, Z5781, ECs5150
UniProt
Find proteins for P0ABC7 (Escherichia coli (strain K12)) Explore P0ABC7 Go to UniProtKB: P0ABC7
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P0ABC7
Sequence Annotations Expand
Reference Sequence

Find similar proteins by:

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Modulator of FtsH protease HflC	B [auth XB] D [auth XD] F [auth XF] H [auth XH] J [auth XJ] B [auth XB], D [auth XD], F [auth XF], H [auth XH], J [auth XJ], L [auth XL], N [auth XN], P [auth XP], R [auth XR], T [auth XT], V [auth XV], X [auth XX]	334	Escherichia coli	Mutation(s): 0 Gene Names: hflC, Z5782, ECs5151
UniProt
Find proteins for P0ABC3 (Escherichia coli (strain K12)) Explore P0ABC3 Go to UniProtKB: P0ABC3
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P0ABC3
Sequence Annotations Expand
Reference Sequence

Experimental Data & Validation

Experimental Data

Method: ELECTRON MICROSCOPY
Resolution: 2.93 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC	v.4.6

Structure Validation

View Full Validation Report

View more in-depth experimental data

Entry History

& Funding Information

Deposition Data

Released Date: 2026-03-04

Deposition Author(s):

Ghanbarpour, A.

Funding Organization	Location	Grant Number
Other private	United States	--

Revision History (Full details and data files)

Version 1.0: 2026-03-04
Type: Initial release

RCSB PDB is hosted by

RCSB PDB is a member of

RCSB Partners
Nucleic Acid Knowledgebase

CoreTrustSeal

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.