9I1M | pdb_00009i1m

Structure of AauA, a sugar-binding protein with its substrate

PDB DOI: https://doi.org/10.2210/pdb9I1M/pdb

Classification: SUGAR BINDING PROTEIN
Organism(s): Escherichia coli
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2025-01-16 Released: 2025-07-16
Deposition Author(s): Josts, I., Cottam, C., Connolly, J.P.R.
Funding Organization(s): UK Research and Innovation (UKRI)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.35 Å
R-Value Free:
0.143 (Depositor), 0.139 (DCC)
R-Value Work:
0.126 (Depositor), 0.137 (DCC)
R-Value Observed:
0.127 (Depositor)

Starting Model: in silico
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Ligand Structure Quality Assessment

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

Literature

Structure of AauA, a sugar-binding protein with its substrate

Josts, I., Cottam, C., Connolly, J.P.R.

To be published.

Macromolecule Content

Total Structure Weight: 36.24 kDa
Atom Count: 2,492
Modeled Residue Count: 292
Deposited Residue Count: 328
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Sugar-binding protein	A	328	Escherichia coli	Mutation(s): 0 Gene Names: ECs_0374
UniProt
Find proteins for Q8X6A6 (Escherichia coli O157:H7) Explore Q8X6A6 Go to UniProtKB: Q8X6A6
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q8X6A6
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
PG4 Query on PG4 Download Ideal Coordinates CCD File SDF format, chain B [auth A] SDF format, chain D [auth A] MOL2 format, chain B [auth A] MOL2 format, chain D [auth A] mmCIF format, chain B [auth A] mmCIF format, chain D [auth A]	B [auth A], D [auth A]	TETRAETHYLENE GLYCOL C₈ H₁₈ O₅ UWHCKJMYHZGTIT-UHFFFAOYSA-N		Interactions Focus chain B [auth A] Focus chain D [auth A] Interactions & Density Focus chain B [auth A] Focus chain D [auth A]
A1IZL Query on A1IZL Download Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A] mmCIF format, chain C [auth A]	C [auth A]	(2~{S},3~{R},4~{R})-2-(hydroxymethyl)oxolane-2,3,4-triol C₅ H₁₀ O₅ LQXVFWRQNMEDEE-WDCZJNDASA-N		Interactions Focus chain C [auth A] Interactions & Density Focus chain C [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.35 Å
R-Value Free: 0.143 (Depositor), 0.139 (DCC)
R-Value Work: 0.126 (Depositor), 0.137 (DCC)
R-Value Observed: 0.127 (Depositor)

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 76.38	α = 90
b = 66.94	β = 94.45
c = 57.85	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
xia2	data reduction
Aimless	data scaling
MOLREP	phasing

Structure Validation

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Ligand Structure Quality Assessment

Entry History & Funding Information

Deposition Data

Released Date: 2025-07-16

Deposition Author(s):

Connolly, J.P.R.

Funding Organization	Location	Grant Number
UK Research and Innovation (UKRI)	United Kingdom	--

Revision History (Full details and data files)

Version 1.0: 2025-07-16
Type: Initial release

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.