SAXSdb — 2xq2

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

SODIUM/GLUCOSE COTRANSPORTER

VIBRIO PARAHAEMOLYTICUS

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	DI(HYDROXYETHYL)ETHER × 3 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SGLT_VIBPA
Isoform	—
PDB entities	1, 2
Chains and sequence ranges	Author chain A； PDBConstruct 1–543； UniProt 1–543 Author chain B； PDBConstruct 51–543； UniProt 51–543

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	2xq2
Deposition date deposition_date	2010-09-01
Structure title title	Structure of the K294A mutant of vSGLT
Keywords keywords	TRANSPORT PROTEIN, INVERTED REPEATS, LEUT-FOLD, GALACTOSE, TRANSPORTER; TRANSPORT 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.

2xq2__assembly_1__model_1

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

Download this curve (.dat)

2xq2__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2xq2__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	33.20 Å
Rg (electron density)	32.63 Å
Total Rg	33.23 Å
Atom count	8085
Residues	1060
Excluded volume	149190 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2xq2__assembly_1__model_1`	dimeric （2）	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	SODIUM/GLUCOSE COTRANSPORTER
Molecular weight formula_weight	64142.3 kDa
Mutation mutation	YES
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	8090

MSNIEHGLSFIDIMVFAIYVAIIIGVGLWVSRDKKGTQKSTEDYFLAGKSLPWWAVGASLIAANISAEQFIGMSGSGYSIGLAIASYEWMSAITLIIVGKYFLPIFIEKGIYTIPEFVEKRFNKKLKTILAVFWISLYIFVNLTSVLYLGGLALETILGIPLMYSILGLALFALVYSIYGGLSAVVWTDVIQVFFLVLGGFMTTYMAVSFIGGTDGWFAGVSKMVDAAPGHFEMILDQSNPQYMNLPGIAVLIGGLWVANLYYWGFNQYIIQRTLAAKSVSEAQKGIVFAAFLALIVPFLVVLPGIAAYVITSDPQLMASLGDIAATNLPSAANADKAYPWLTQFLPVGVKGVVFAALAAAIVSSLASMLNSTATIFTMDIYKEYISPDSGDHKLVNVGRTAAVVALIIAALIAPMLGGIGQCFQYIQEYTGLVSPGILAVFLLGLFWKKTTSKGAIIGVVASIPFALFLKFMPLSMPFMDQMLYTLLFTMVVIAFTSLSTSINDDDPKGISVTSSMFVTDRSFNIAAYGIMIVLAVLYTLFWVNADAEITLIIFGVMAGVIGTILLISYGIKKLIKASYKSGGSPGHHHHHH

Source Source

Source organism organism	VIBRIO PARAHAEMOLYTICUS
NCBI taxonomy ID ncbi_taxonomy_id	670
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 polymer

Description description	SODIUM/GLUCOSE COTRANSPORTER
Molecular weight formula_weight	62859.1 kDa
Mutation mutation	YES
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXLPWWAVGASLIAANISAEQFIGMSGSGYSIGLAIASYEWMSAITLIIVGKYFLPIFIEKGIYTIPEFVEKRFNKKLKTILAVFWISLYIFVNLTSVLYLGGLALETILGIPLMYSILGLALFALVYSIYGGLSAVVWTDVIQVFFLVLGGFMTTYMAVSFIGGTDGWFAGVSKMVDAAPGHFEMILDQSNPQYMNLPGIAVLIGGLWVANLYYWGFNQYIIQRTLAAKSVSEAQKGIVFAAFLALIVPFLVVLPGIAAYVITSDPQLMASLGDIAATNLPSAANADKAYPWLTQFLPVGVKGVVFAALAAAIVSSLASMLNSTATIFTMDIYKEYISPDSGDHKLVNVGRTAAVVALIIAALIAPMLGGIGQCFQYIQEYTGLVSPGILAVFLLGLFWKKTTSKGAIIGVVASIPFALFLKFMPLSMPFMDQMLYTLLFTMVVIAFTSLSTSINDDDPKGISVTSSMFVTDRSFNIAAYGIMIVLAVLYTLFWVNADAEITLIIFGVMAGVIGTILLISYGIKKLIKASYKSGGSPGHHHHHH

Source Source

Source organism organism	VIBRIO PARAHAEMOLYTICUS
NCBI taxonomy ID ncbi_taxonomy_id	670
Host organism host_organism	ESCHERICHIA COLI

Entity 3 Entity 3 non-polymer

Description description	DI(HYDROXYETHYL)ETHER
Molecular weight formula_weight	106.1 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	5

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	2xq2A01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1730 — Sodium/glucose cotransporter
Homologous superfamily homologous superfamily	10 — Sodium/glucose cotransporter

Domain ID domain_id	2xq2B01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1730 — Sodium/glucose cotransporter
Homologous superfamily homologous superfamily	10 — Sodium/glucose cotransporter

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Unit-cell length a length_a	85.300 Å
Unit-cell length b length_b	112.680 Å
Unit-cell length c length_c	238.770 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.730 Å
Low-resolution limit resolution_low	68.010 Å
R factor r_factor	0.2520
R_work r_work	0.2509
R_free r_free	0.2743

Structure of the K294A mutant of vSGLT

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

SODIUM/GLUCOSE COTRANSPORTER

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

2xq2__assembly_1__model_1

2xq2__assembly_1__model_1 | I(q)

2xq2__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)

Structure of the K294A mutant of vSGLT

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

SODIUM/GLUCOSE COTRANSPORTER

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

2xq2__assembly_1__model_1

2xq2__assembly_1__model_1 | I(q)

2xq2__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)