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3jcg

Cryo-EM structure of the magnesium channel CorA in the magnesium-free, asymmetric open state I

Method: ELECTRON MICROSCOPY
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Magnesium transport protein CorA

Thermotoga maritima

UniProt Q9WZ31

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 5 No other associated polymer Consistent with protein count

Other States of the Same Protein in the Database

Monomer
2bbh

1 assemblies

Homodimer
2bbh

1 assemblies

Homotetramer

None

Other homooligomers
2bbj 2hn2 2iub 2iub 3jcf 3jcg 3jch 4eeb 4eed 4i0u 4i0u 5jrw

13 assemblies; showing the first 12

Heteromeric or nucleic-acid complex
8slb 8tmb 8tmc 8tmd 8tme 8tmf 8tmg 8tmh 8tmi 8tmj 8tmk 8tml

17 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name CORA_THEMA
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–351； UniProt 1–351 Author chain B； PDBConstruct 1–351； UniProt 1–351 Author chain C； PDBConstruct 1–351； UniProt 1–351 Author chain D； PDBConstruct 1–351； UniProt 1–351 Author chain E； PDBConstruct 1–351； UniProt 1–351

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id3jcg
Deposition date deposition_date2015-12-11
Structure title titleCryo-EM structure of the magnesium channel CorA in the magnesium-free, asymmetric open state I
Keywords keywords;membrane protein, ion channel, magnesium channel, pentameric complex, symmetry vs. asymmetry, conformational change, gating mechanism, direct electron detector, K2, TRANSPORT PROTEIN ;; TRANSPORT PROTEIN
Experimental Method methodELECTRON MICROSCOPY
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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

3jcg__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

3jcg__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

3jcg__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg（Guinier）42.34 Å
Rg (electron density)42.25 Å
Total Rg42.36 Å
Atom count6617
Residues1653
Excluded volume91038 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 3jcg__assembly_1__model_1 pentameric （5） Success 4.1.3-1-20251215 (887e7ef) View Download
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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (1)

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7. Citations (1)