8CTX | pdb_00008ctx

Crystal structure of a K+ selective NaK mutant (NaK2K) -K+,Tl+ complex

PDB DOI: https://doi.org/10.2210/pdb8CTX/pdb

Classification: MEMBRANE PROTEIN
Organism(s): Bacillus cereus m1550
Expression System: Escherichia coli
Mutation(s): No
Membrane Protein: Yes PDBTM MemProtMD

Deposited: 2022-05-16 Released: 2023-06-14
Deposition Author(s): Lee, B., White, K.I., Socolich, M.A., Klureza, M.A., Henning, R., Srajer, V., Ranganathan, R., Hekstra, D.
Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), National Institutes of Health/Eunice Kennedy Shriver National Institute of Child Health & Human Development (NIH/NICHD), Department of Energy (DOE, United States), Kinship Foundation, New York Community Trust

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.99 Å
R-Value Free:
0.254 (Depositor), 0.255 (DCC)
R-Value Work:
0.214 (Depositor), 0.215 (DCC)
R-Value Observed:
0.218 (Depositor)

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

This is version 1.1 of the entry. See complete history.

Literature

Direct visualization of electric field-stimulated ion conduction in a potassium channel

Lee, B., White, K.I., Socolich, M.A., Klureza, M.A., Henning, R., Srajer, V., Ranganathan, R., Hekstra, D.

To be published.

Macromolecule Content

Total Structure Weight: 23.61 kDa
Atom Count: 1,734
Modeled Residue Count: 189
Deposited Residue Count: 192
Unique protein chains: 1

Macromolecules

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Potassium channel protein	A, B	96	Bacillus cereus m1550	Mutation(s): 0 Gene Names: bcere0011_5790 Membrane Entity: Yes
UniProt
Find proteins for Q81HW2 (Bacillus cereus (strain ATCC 14579 / DSM 31 / CCUG 7414 / JCM 2152 / NBRC 15305 / NCIMB 9373 / NCTC 2599 / NRRL B-3711)) Explore Q81HW2 Go to UniProtKB: Q81HW2
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q81HW2
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
TL (Subject of Investigation/LOI) Query on TL Download:Ideal Coordinates CCD File SDF format, chain C [auth A] SDF format, chain D [auth A] SDF format, chain E [auth A] SDF format, chain F [auth A] SDF format, chain G [auth A] SDF format, chain H [auth A] SDF format, chain K [auth B] SDF format, chain L [auth B] SDF format, chain M [auth B] SDF format, chain N [auth B] SDF format, chain O [auth B] MOL2 format, chain C [auth A] MOL2 format, chain D [auth A] MOL2 format, chain E [auth A] MOL2 format, chain F [auth A] MOL2 format, chain G [auth A] MOL2 format, chain H [auth A] MOL2 format, chain K [auth B] MOL2 format, chain L [auth B] MOL2 format, chain M [auth B] MOL2 format, chain N [auth B] MOL2 format, chain O [auth B] mmCIF format, chain C [auth A] mmCIF format, chain D [auth A] mmCIF format, chain E [auth A] mmCIF format, chain F [auth A] mmCIF format, chain G [auth A] mmCIF format, chain H [auth A] mmCIF format, chain K [auth B] mmCIF format, chain L [auth B] mmCIF format, chain M [auth B] mmCIF format, chain N [auth B] mmCIF format, chain O [auth B]	C [auth A] D [auth A] E [auth A] F [auth A] G [auth A] C [auth A], D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], K [auth B], L [auth B], M [auth B], N [auth B], O [auth B]	THALLIUM (I) ION Tl ZLUSCZLCHQSJRU-UHFFFAOYSA-N		Interactions Focus chain C [auth A] Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain K [auth B] Focus chain L [auth B] Focus chain M [auth B] Focus chain N [auth B] Focus chain O [auth B] Interactions & Density Focus chain C [auth A] Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain K [auth B] Focus chain L [auth B] Focus chain M [auth B] Focus chain N [auth B] Focus chain O [auth B]
K (Subject of Investigation/LOI) Query on K Download:Ideal Coordinates CCD File SDF format, chain I [auth A] SDF format, chain J [auth A] MOL2 format, chain I [auth A] MOL2 format, chain J [auth A] mmCIF format, chain I [auth A] mmCIF format, chain J [auth A]	I [auth A], J [auth A]	POTASSIUM ION K NPYPAHLBTDXSSS-UHFFFAOYSA-N		Interactions Focus chain I [auth A] Focus chain J [auth A] Interactions & Density Focus chain I [auth A] Focus chain J [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.99 Å
R-Value Free: 0.254 (Depositor), 0.255 (DCC)
R-Value Work: 0.214 (Depositor), 0.215 (DCC)
R-Value Observed: 0.218 (Depositor)

Space Group: I 4

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 68.461	α = 90
b = 68.461	β = 90
c = 90.389	γ = 90

Software Package:

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

Structure Validation

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View more in-depth experimental data

Entry History

& Funding Information

Deposition Data

Released Date: 2023-06-14

Deposition Author(s):

Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	RO1GM12345
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	RO1GM141697
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	P41GM118217
National Institutes of Health/Eunice Kennedy Shriver National Institute of Child Health & Human Development (NIH/NICHD)	United States	DP2OD028805
Department of Energy (DOE, United States)	United States	DE-AC02-06CH11357
Department of Energy (DOE, United States)	United States	DE-AC02-76SF00515
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	P41GM103393
Kinship Foundation	United States	SSP-2018-3240
New York Community Trust	United States	338034