9WSH | pdb_00009wsh

ToFrO 15E_to_15Z_10ns

PDB DOI: https://doi.org/10.2210/pdb9WSH/pdb

Classification: FLUORESCENT PROTEIN
Organism(s): Tolypothrix sp. PCC 7910
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2025-09-13 Released: 2026-09-16
Deposition Author(s): Kim, Y., Yang, H.W., Liu, X., Liu, H., Park, Y.I., Yun, J.H.
Funding Organization(s): National Research Foundation (NRF, Korea), Other government

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.60 Å
R-Value Free:
0.311 (Depositor), 0.312 (DCC)
R-Value Work:
0.288 (Depositor), 0.288 (DCC)

Starting Model: experimental
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Ligand Structure Quality Assessment

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

Literature

ToFrO 15E_to_15Z_10ns

Kim, Y., Yang, H.W., Liu, X., Liu, H., Park, Y.I., Yun, J.H.

To be published.

Macromolecule Content

Total Structure Weight: 42.76 kDa
Atom Count: 2,684
Modeled Residue Count: 312
Deposited Residue Count: 356
Unique protein chains: 1

Macromolecules

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Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
histidine kinase	A [auth B], B [auth A]	178	Tolypothrix sp. PCC 7910	Mutation(s): 0 Gene Names: HCG51_32595 EC: 2.7.13.3
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
CYC (Subject of Investigation/LOI) Query on CYC Download:Ideal Coordinates CCD File SDF format, chain C [auth B] SDF format, chain D [auth A] MOL2 format, chain C [auth B] MOL2 format, chain D [auth A] mmCIF format, chain C [auth B] mmCIF format, chain D [auth A]	C [auth B], D [auth A]	PHYCOCYANOBILIN C₃₃ H₄₀ N₄ O₆ VXTXPYZGDQPMHK-GMXXPEQVSA-N		Interactions Focus chain C [auth B] Focus chain D [auth A] Interactions & Density Focus chain C [auth B] Focus chain D [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.60 Å
R-Value Free: 0.311 (Depositor), 0.312 (DCC)
R-Value Work: 0.288 (Depositor), 0.288 (DCC)

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.04	α = 90
b = 53.87	β = 101.15
c = 79.95	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
Coot	model building
CrystFEL	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: 2026-09-16

Deposition Author(s):

Funding Organization	Location	Grant Number
National Research Foundation (NRF, Korea)	Korea, Republic Of	--
Other government	Korea, Republic Of	IBS-R021-D1-2023-a00

Revision History (Full details and data files)

Version 1.0: 2026-09-16
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.