9QL9 | pdb_00009ql9

CA domain of LvrB from Leptospira in its apo form

PDB DOI: https://doi.org/10.2210/pdb9QL9/pdb

Classification: SIGNALING PROTEIN
Organism(s): Leptospira interrogans
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2025-03-20 Released: 2026-04-08
Deposition Author(s): Hiller, S., Agustoni, E., Buschiazzo, A.
Funding Organization(s): Novartis FreeNovation

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.50 Å
R-Value Free:
0.237 (Depositor), 0.237 (DCC)
R-Value Work:
0.195 (Depositor), 0.196 (DCC)
R-Value Observed:
0.198 (Depositor)

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

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

Literature

Leptospira virulence factor LvrB unveils the activation mechanism of Rec-controlled histidine kinases

Hiller, S., Agustoni, E., Buschiazzo, A.

To be published.

Macromolecule Content

Total Structure Weight: 39.33 kDa
Atom Count: 2,639
Modeled Residue Count: 302
Deposited Residue Count: 346
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
histidine kinase	A, B	173	Leptospira interrogans	Mutation(s): 0 Gene Names: LA_2223 EC: 2.7.13.3
UniProt
Find proteins for Q8F424 (Leptospira interrogans serogroup Icterohaemorrhagiae serovar Lai (strain 56601)) Explore Q8F424 Go to UniProtKB: Q8F424
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q8F424
Sequence Annotations Expand
Reference Sequence

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.50 Å
R-Value Free: 0.237 (Depositor), 0.237 (DCC)
R-Value Work: 0.195 (Depositor), 0.196 (DCC)
R-Value Observed: 0.198 (Depositor)

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 41.543	α = 90
b = 57.153	β = 90
c = 135.448	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Released Date: 2026-04-08

Deposition Author(s):

Funding Organization	Location	Grant Number
Novartis FreeNovation	Switzerland	--

Revision History (Full details and data files)

Version 1.0: 2026-04-08
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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.