← Back to search
2kxl

Solution structure of a bacterial cyclic nucleotide-activated K+ channel binding domain in the unliganded state

Method: SOLUTION NMR
▼

1. Protein Identity and Related Structures Protein Identity & Related Structures

Cyclic nucleotide-gated potassium channel mll3241

Mesorhizobium loti

UniProt Q98GN8

State in the Current Structure

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

Other States of the Same Protein in the Database

Monomer
2k0g 2kxl 4muv 4muv

4 assemblies

Homodimer
1u12 1vp6 3cl1 3cl1 3clp 4muv

6 assemblies

Homotetramer
2zd9 3beh 3co2 4chv 4chw 6eo1 6i9d 6iax 6qcy 6qcz 6qd0 6qd1

15 assemblies; showing the first 12

Other homooligomers

None

Heteromeric or nucleic-acid complex
6m63 6m63

2 assemblies

View Construct and Data Evidence
UniProt name CNGK1_RHILO
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 3–142； UniProt 216–355

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id2kxl
Deposition date deposition_date2010-05-10
Structure title titleSolution structure of a bacterial cyclic nucleotide-activated K+ channel binding domain in the unliganded state
Keywords keywords;Cyclic Nucleotide Binding Domain (CNBD), Ion Channel, Protein Phosphate Binding Cassette in the Apo State, helical portion, beta barrel core, MEMBRANE PROTEIN ;; MEMBRANE PROTEIN
Experimental Method methodSOLUTION NMR
▼

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.

2kxl__assembly_1__model_10

Assembly 1 · Model 10 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2kxl__assembly_1__model_10 | I(q)

10-2 10-1 105 106 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

2kxl__assembly_1__model_10 | 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）16.40 Å
Rg (electron density)15.00 Å
Total Rg16.21 Å
Atom count2137
Residues142
Excluded volume18791 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2kxl__assembly_1__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 2 2kxl__assembly_1__model_2 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 3 2kxl__assembly_1__model_3 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 4 2kxl__assembly_1__model_4 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 5 2kxl__assembly_1__model_5 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 6 2kxl__assembly_1__model_6 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 7 2kxl__assembly_1__model_7 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 8 2kxl__assembly_1__model_8 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 9 2kxl__assembly_1__model_9 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 10 2kxl__assembly_1__model_10 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 11 2kxl__assembly_1__model_11 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 12 2kxl__assembly_1__model_12 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 13 2kxl__assembly_1__model_13 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 14 2kxl__assembly_1__model_14 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 15 2kxl__assembly_1__model_15 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (1)

▼

6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd2kxla1
Class classb — All beta proteins
Fold Fold foldb.82 — Double-stranded beta-helix
Superfamily Superfamily superfamilyb.82.3 — cAMP-binding domain-like
Family Family familyb.82.3.2 — cAMP-binding domain
Domain ID domain_idd2kxla2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (1 domains)

Domain ID domain_id2kxlA00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily10 — Jelly Rolls
▶

7. Citations (1)