22GU | pdb_000022gu

Crystal structure of the CJ1041C protein from Campylobacter jejuni in complex with Ca2+ in space group P212121

PDB DOI: https://doi.org/10.2210/pdb22GU/pdb

Classification: METAL BINDING PROTEIN
Organism(s): Campylobacter jejuni
Expression System: Escherichia coli BL21(DE3)
Mutation(s): No

Deposited: 2026-01-10 Released: 2026-04-01
Deposition Author(s): Park, M.A., Yoon, S.I.
Funding Organization(s): National Research Foundation (NRF, Korea)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.50 Å
R-Value Free:
0.199 (Depositor), 0.201 (DCC)
R-Value Work:
0.171 (Depositor), 0.171 (DCC)
R-Value Observed:
0.172 (Depositor)

Starting Model: experimental
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Ligand Structure Quality Assessment

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

Literature

Structure of the CJ1041C protein from Campylobacter jejuni and its interaction with Ca2+ ions

Yoon, S.I.

To be published.

Macromolecule Content

Total Structure Weight: 30.82 kDa
Atom Count: 2,293
Modeled Residue Count: 264
Deposited Residue Count: 272
Unique protein chains: 1

Macromolecules

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Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CJ1041C	A	272	Campylobacter jejuni	Mutation(s): 0

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
GOL (Subject of Investigation/LOI) Query on GOL Download:Ideal Coordinates CCD File SDF format, chain E [auth A] MOL2 format, chain E [auth A] mmCIF format, chain E [auth A]	E [auth A]	GLYCEROL C₃ H₈ O₃ PEDCQBHIVMGVHV-UHFFFAOYSA-N		Interactions Focus chain E [auth A] Interactions & Density Focus chain E [auth A]
CA (Subject of Investigation/LOI) Query on CA Download:Ideal Coordinates CCD File SDF format, chain D [auth A] SDF format, chain C [auth A] SDF format, chain B [auth A] MOL2 format, chain D [auth A] MOL2 format, chain C [auth A] MOL2 format, chain B [auth A] mmCIF format, chain D [auth A] mmCIF format, chain C [auth A] mmCIF format, chain B [auth A]	B [auth A], C [auth A], D [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N		Interactions Focus chain B [auth A] Focus chain C [auth A] Focus chain D [auth A] Interactions & Density Focus chain B [auth A] Focus chain C [auth A] Focus chain D [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.50 Å
R-Value Free: 0.199 (Depositor), 0.201 (DCC)
R-Value Work: 0.171 (Depositor), 0.171 (DCC)
R-Value Observed: 0.172 (Depositor)

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 46.402	α = 90
b = 60.629	β = 90
c = 91.732	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing

Structure Validation

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Ligand Structure Quality Assessment

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Entry History

& Funding Information

Deposition Data

Released Date: 2026-04-01

Deposition Author(s):

Funding Organization	Location	Grant Number
National Research Foundation (NRF, Korea)	Korea, Republic Of	RS-2023-00208153

Revision History (Full details and data files)

Version 1.0: 2026-04-01
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.