RCSB PDB: Search

3NAF \| pdb_00003naf	Download File View File

Structure of the Intracellular Gating Ring from the Human High-conductance Ca2+ gated K+ Channel (BK Channel)

Wu, Y., Yang, Y., Ye, S., Jiang, Y.

(2010) Nature 466: 393-397

Released	2010-06-30
Method	X-RAY DIFFRACTION 3.1 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1,Calcium-activated potassium channel subunit alpha-1,Calcium-activated potassium channel subunit alpha-1 (protein)

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6ND0 \| pdb_00006nd0	Download File View File

human BK channel reconstituted into liposomes

Wang, L., Tonggu, L.

To be published

Released	2020-06-17
Method	ELECTRON MICROSCOPY 3.5 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein)

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6V22 \| pdb_00006v22	Download File View File

Cryo-EM structure of Ca2+-bound hsSlo1-beta4 channel complex

Tao, X., MacKinnon, R.

(2019) Elife 8:

Released	2019-12-25
Method	ELECTRON MICROSCOPY 3.2 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein) Calcium-activated potassium channel subunit beta-4 (protein)
Unique Ligands	CA, CLR, K, MG, NAG, POV

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6V35 \| pdb_00006v35	Download File View File

Cryo-EM structure of Ca2+-free hsSlo1-beta4 channel complex

Tao, X., MacKinnon, R.

(2019) Elife 8:

Released	2019-12-25
Method	ELECTRON MICROSCOPY 3.5 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein) Calcium-activated potassium channel subunit beta-4 (protein)
Unique Ligands	CLR, NAG, PGW

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6V38 \| pdb_00006v38	Download File View File

Cryo-EM structure of Ca2+-bound hsSlo1 channel

Tao, X., MacKinnon, R.

(2019) Elife 8:

Released	2019-12-25
Method	ELECTRON MICROSCOPY 3.8 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein)
Unique Ligands	CA, CLR, MG, POV

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6V3G \| pdb_00006v3g	Download File View File

Cryo-EM structure of Ca2+-free hsSlo1 channel

Tao, X., MacKinnon, R.

(2019) Elife 8:

Released	2019-12-25
Method	ELECTRON MICROSCOPY 4 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein)

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6V5A \| pdb_00006v5a	Download File View File

Crystal structure of the human BK channel gating ring L390P mutant

Deng, Z., Yuan, P.

(2020) Proc Natl Acad Sci U S A 117: 14512-14521

Released	2020-07-01
Method	X-RAY DIFFRACTION 2 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein)
Unique Ligands	CA, SO4

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8GH9 \| pdb_00008gh9	Download File View File

Cryo-EM structure of hSlo1 in total membrane vesicles

Tao, X., Zhao, C., MacKinnon, R.

(2023) Proc Natl Acad Sci U S A 120: e2302325120-e2302325120

Released	2023-05-10
Method	ELECTRON MICROSCOPY 3.8 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein)

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8GHF \| pdb_00008ghf	Download File View File

cryo-EM structure of hSlo1 in plasma membrane vesicles

Tao, X., Zhao, C., MacKinnon, R.

(2023) Proc Natl Acad Sci U S A 120: e2302325120-e2302325120

Released	2023-05-10
Method	ELECTRON MICROSCOPY 2.7 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein)
Unique Ligands	CA, CLR, MG, NA, POV

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8GHG \| pdb_00008ghg	Download File View File

Cryo-EM structure of hSlo1 in digitonin, Ca2+-free and EDTA-free

Tao, X., Zhao, C., MacKinnon, R.

(2023) Proc Natl Acad Sci U S A 120: e2302325120-e2302325120

Released	2023-05-10
Method	ELECTRON MICROSCOPY 3.3 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein)

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8S3E \| pdb_00008s3e	Download File View File

Structure of rabbit Slo1 in complex with gamma1/LRRC26

Redhardt, M., Raunser, S., Raisch, T.

(2024) FEBS Lett 598: 875-888

Released	2024-04-10
Method	ELECTRON MICROSCOPY 2.39 Å
Organisms	Oryctolagus cuniculus
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein) Leucine-rich repeat-containing protein 26 (protein)
Unique Ligands	6PL, CA, CLR, K, MG

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8V60 \| pdb_00008v60	Download File View File

F315A mutant of human Slo1 in presence of EDTA - resting VSD

Pal, K., Kallure, G., Chowdhury, S.

To be published

Released	2024-12-11
Method	ELECTRON MICROSCOPY 2.43 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein)
Unique Ligands	AJP, CLR, K, POV

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8V63 \| pdb_00008v63	Download File View File

R207A mutant of human Slo1 in presence of EDTA - activated VSD

Pal, K., Kallure, G.S., Chowdhury, S.

To be published

Released	2024-12-11
Method	ELECTRON MICROSCOPY 2.72 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein)
Unique Ligands	AJP, CLR, K, POV

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8V64 \| pdb_00008v64	Download File View File

RCK1-RCK2 double mutant of human Slo1 in presence of EDTA - resting VSD

Pal, K., Kallure, G.S., Chowdhury, S.

To be published

Released	2024-12-11
Method	ELECTRON MICROSCOPY 2.6 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein)
Unique Ligands	AJP, CLR, K, POV

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8VAV \| pdb_00008vav	Download File View File

Human Slo1 - human LRRC26 in presence of EDTA - GR masked

Pal, K., Kallure, G.S., Chowdhury, S.

To be published

Released	2024-12-25
Method	ELECTRON MICROSCOPY 3.13 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein) Leucine-rich repeat-containing protein 26 (protein)
Unique Ligands	AJP, CLR, K, NAG, POV

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8VAZ \| pdb_00008vaz	Download File View File

Structure of human Slo1 and human LRRC26 in EDTA - LRRD masked

Pal, K., Kallure, G.S., Chowdhury, S.

To be published

Released	2024-12-25
Method	ELECTRON MICROSCOPY 2.82 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein) Leucine-rich repeat-containing protein 26 (protein)
Unique Ligands	K

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8Z3S \| pdb_00008z3s	Download File View File

Activation mechanism and novel binding site of the BKCa channel activator CTIBD

Lee, N., Kim, S., Jo, H., Lee, N.Y., Jin, M.S., Park, C.S.

(2024) Life Sci Alliance 7:

Released	2024-07-31
Method	ELECTRON MICROSCOPY 3.9 Å
Organisms	Homo sapiens
Macromolecule	Calcium-activated potassium channel subunit alpha-1 (protein)
Unique Ligands	A1L04, CA, MG, Y01

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9CZH \| pdb_00009czh	Download File View File

Ca2+ bound intermediate state of hSlo1 + beta2N-beta4 channel in detergent.

Agarwal, S., Nimigean, C.

(2025) Nat Commun 16: 1769-1769

Released	2025-03-05
Method	ELECTRON MICROSCOPY 2.9 Å
Organisms	Homo sapiens
Macromolecule	Isoform 5 of Calcium-activated potassium channel subunit alpha-1 (protein) Large-conductance Ca2+-activated K+ channel beta2 subunit,Calcium-activated potassium channel subunit beta-4 (protein)
Unique Ligands	CA, K, POV

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9CZJ \| pdb_00009czj	Download File View File

Ca2+ free hSlo1 + beta2N-beta4 channel in detergent.

Agarwal, S., Nimigean, C.

(2025) Nat Commun 16: 1769-1769

Released	2025-03-05
Method	ELECTRON MICROSCOPY 3.54 Å
Organisms	Homo sapiens
Macromolecule	Isoform 5 of Calcium-activated potassium channel subunit alpha-1 (protein) Large-conductance Ca2+-activated K+ channel beta2 subunit,Calcium-activated potassium channel subunit beta-4 (protein)
Unique Ligands	CLR, K

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9CZK \| pdb_00009czk	Download File View File

Ca2+ free hSlo1 + beta2N-beta4 channel in nanodisc.

Agarwal, S., Nimigean, C.

(2025) Nat Commun 16: 1769-1769

Released	2025-03-05
Method	ELECTRON MICROSCOPY 3.5 Å
Organisms	Homo sapiens
Macromolecule	Isoform 5 of Calcium-activated potassium channel subunit alpha-1 (protein) Large-conductance Ca2+-activated K+ channel beta2 subunit,Calcium-activated potassium channel subunit beta-4 (protein)
Unique Ligands	CLR, K, POV

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9CZM \| pdb_00009czm	Download File View File

Ca2+ bound open-inactivated hSlo1 + beta2N-beta4 channel in nanodisc.

Agarwal, S., Nimigean, C.

(2025) Nat Commun 16: 1769-1769

Released	2025-03-05
Method	ELECTRON MICROSCOPY 2.57 Å
Organisms	Homo sapiens
Macromolecule	Isoform 5 of Calcium-activated potassium channel subunit alpha-1 (protein) Large-conductance Ca2+-activated K+ channel beta2 subunit,Calcium-activated potassium channel subunit beta-4 (protein)
Unique Ligands	CA, CLR, K, MG, POV

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9CZO \| pdb_00009czo	Download File View File

Ca2+ bound intermediate state of hSlo1 + beta2N-beta4 channel in nanodisc.

Agarwal, S., Nimigean, C.

(2025) Nat Commun 16: 1769-1769

Released	2025-03-05
Method	ELECTRON MICROSCOPY 2.87 Å
Organisms	Homo sapiens
Macromolecule	Isoform 5 of Calcium-activated potassium channel subunit alpha-1 (protein) Large-conductance Ca2+-activated K+ channel beta2 subunit,Calcium-activated potassium channel subunit beta-4 (protein)
Unique Ligands	CA, K, POV

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9CZQ \| pdb_00009czq	Download File View File

Ca2+ bound open-inactivated hSlo1 + beta2N-beta4 channel in detergent.

Agarwal, S., Nimigean, C.

(2025) Nat Commun 16: 1769-1769

Released	2025-03-05
Method	ELECTRON MICROSCOPY 2.88 Å
Organisms	Homo sapiens
Macromolecule	Isoform 5 of Calcium-activated potassium channel subunit alpha-1 (protein) Large-conductance Ca2+-activated K+ channel beta2 subunit,Calcium-activated potassium channel subunit beta-4 (protein)
Unique Ligands	CA, CLR, K, MG, POV

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9D18 \| pdb_00009d18	Download File View File

Ca2+ bound open-inactivated hSlo1 + beta2N-beta4 channel in detergent-conformation 2 of inactivating domain

Agarwal, S., Nimigean, C.

(2025) Nat Commun 16: 1769-1769

Released	2025-03-05
Method	ELECTRON MICROSCOPY 2.88 Å
Organisms	Homo sapiens
Macromolecule	Isoform 5 of Calcium-activated potassium channel subunit alpha-1 (protein) Large-conductance Ca2+-activated K+ channel beta2 subunit,Calcium-activated potassium channel subunit beta-4 (protein)
Unique Ligands	CA, CLR, K, MG, POV

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9D19 \| pdb_00009d19	Download File View File

Ca2+ bound open-inactivated hSlo1 + beta2N-beta4 channel in detergent-conformation 3 of inactivating domain

Agarwal, S., Nimigean, C.

(2025) Nat Commun 16: 1769-1769

Released	2025-03-05
Method	ELECTRON MICROSCOPY 2.88 Å
Organisms	Homo sapiens
Macromolecule	Isoform 5 of Calcium-activated potassium channel subunit alpha-1 (protein) Large-conductance Ca2+-activated K+ channel beta2 subunit,Calcium-activated potassium channel subunit beta-4 (protein)
Unique Ligands	CA, CLR, K, MG, POV

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Structure Determination Methodology

Scientific Name of Source Organism

Taxonomy

Experimental Method

Polymer Entity Type

Refinement Resolution (Å)

Release Date

Membrane Protein Annotation

Symmetry Type

3NAF | pdb_00003naf

6ND0 | pdb_00006nd0

6V22 | pdb_00006v22

6V35 | pdb_00006v35

6V38 | pdb_00006v38

6V3G | pdb_00006v3g

6V5A | pdb_00006v5a

8GH9 | pdb_00008gh9

8GHF | pdb_00008ghf

8GHG | pdb_00008ghg

8S3E | pdb_00008s3e

8V60 | pdb_00008v60

8V63 | pdb_00008v63

8V64 | pdb_00008v64

8VAV | pdb_00008vav

8VAZ | pdb_00008vaz

8Z3S | pdb_00008z3s

9CZH | pdb_00009czh

9CZJ | pdb_00009czj

9CZK | pdb_00009czk

9CZM | pdb_00009czm

9CZO | pdb_00009czo

9CZQ | pdb_00009czq

9D18 | pdb_00009d18

9D19 | pdb_00009d19