SAXSdb — 3beh

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

Mll3241 protein

Mesorhizobium loti

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	POTASSIUM ION × 5 LAURYL DIMETHYLAMINE-N-OXIDE × 4 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q98GN8_RHILO
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–355； UniProt 1–355 Author chain B； PDBConstruct 1–355； UniProt 1–355 Author chain C； PDBConstruct 1–355； UniProt 1–355 Author chain D； PDBConstruct 1–355； UniProt 1–355

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.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	3beh
Deposition date deposition_date	2007-11-18
Structure title title	Structure of a Bacterial Cyclic Nucleotide Regulated Ion Channel
Keywords keywords	transmembrane protein, MEMBRANE PROTEIN; MEMBRANE PROTEIN
Experimental Method method	X-RAY DIFFRACTION

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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.

3beh__assembly_1__model_1

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

Download this curve (.dat)

3beh__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3beh__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	31.52 Å
Rg (electron density)	30.34 Å
Total Rg	31.18 Å
Atom count	6650
Residues	895
Excluded volume	121890 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3beh__assembly_1__model_1`	tetrameric （4）	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 (4)

Entity 1 Entity 1 polymer

Description description	Mll3241 protein
Molecular weight formula_weight	37766.3 kDa
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	6673

MSVLPFLRIYAPLNAVLAAPGLLAVAALTIPDMSGRSRLALAALLAVIWGAYLLQLAATLLKRRAGVVRDRTPKIAIDVLAVLVPLAAFLLDGSPDWSLYCAVWLLKPLRDSTFFPVLGRVLANEARNLIGVTTLFGVVLFAVALAAYVIERDIQPEKFGSIPQAMWWAVVTLSTTGYGDTIPQSFAGRVLAGAVMMSGIGIFGLWAGILATGFYQEVRRGDFVRNWQLVAAVPLFQKLGPAVLVEIVRALRARTVPAGAVICRIGEPGDRMFFVVEGSVSVATPNPVELGPGAFFGEMALISGEPRSATVSAATTVSLLSLHSADFQMLCSSSPEIAEIFRKTALERRGAAASA

Source Source

Source organism organism	Mesorhizobium loti
NCBI taxonomy ID ncbi_taxonomy_id	381
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	POTASSIUM ION
Molecular weight formula_weight	39.1 kDa
Source method src_method	syn
Copy count entity_count	5

Entity 3 Entity 3 non-polymer

Description description	LAURYL DIMETHYLAMINE-N-OXIDE
Molecular weight formula_weight	229.4 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	23

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6. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

Domain ID domain_id	3behA01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily	540 — Voltage-gated potassium channels

Domain ID domain_id	3behA02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	70 —

Domain ID domain_id	3behB01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily	540 — Voltage-gated potassium channels

Domain ID domain_id	3behB02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	70 —

Domain ID domain_id	3behC01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily	540 — Voltage-gated potassium channels

Domain ID domain_id	3behC02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	70 —

Domain ID domain_id	3behD01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily	540 — Voltage-gated potassium channels

Domain ID domain_id	3behD02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	70 —

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Unit-cell length a length_a	282.730 Å
Unit-cell length b length_b	282.730 Å
Unit-cell length c length_c	105.460 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	36

Space group space_group	H 3
Space-group number int_tables_number	146
Crystal system crystal_system	—

Resolution resolution	3.100 Å
Low-resolution limit resolution_low	48.450 Å
R factor r_factor	0.2760
R_work r_work	0.2760
R_free r_free	0.2860

Structure of a Bacterial Cyclic Nucleotide Regulated Ion Channel

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

Mll3241 protein

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

3beh__assembly_1__model_1

3beh__assembly_1__model_1 | I(q)

3beh__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

7. Citations (1)

Structure of a Bacterial Cyclic Nucleotide Regulated Ion Channel

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

Mll3241 protein

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

3beh__assembly_1__model_1

3beh__assembly_1__model_1 | I(q)

3beh__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

7. Citations (1)