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3vlu

Crystal structure of Sphingomonas sp. A1 alginate-binding protein AlgQ1 in complex with saturated trimannuronate

Method: X-RAY DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

AlgQ1

Sphingomonas sp.

UniProt Q9KWT6

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Other combination Monomer Protein 1 其他Polymer 1 beta-D-mannopyranuronic acid-(1-4)-beta-D-mannopyranuronic acid-(1-4)-beta-D-mannopyranuronic acid × 1 CALCIUM ION × 1 water × 1 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1y3q

1 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
3a09 3vlu 3vlv 3vlw 3vlw

5 assemblies

View Construct and Data Evidence
UniProt name Q9KWT6_SPHSX
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–502； UniProt 25–526

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_id3vlu
Deposition date deposition_date2011-12-05
Structure title titleCrystal structure of Sphingomonas sp. A1 alginate-binding protein AlgQ1 in complex with saturated trimannuronate
Keywords keywordsSUGAR BINDING PROTEIN, Alginate; SUGAR BINDING PROTEIN
Experimental Method methodX-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.

3vlu__assembly_1__model_1

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

Download this curve (.dat)

3vlu__assembly_1__model_1 | I(q)

10-2 10-1 105 106 107 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

3vlu__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）24.09 Å
Rg (electron density)23.18 Å
Total Rg24.22 Å
Atom count4062
Residues490
Excluded volume72218 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 3vlu__assembly_1__model_1 monomeric （1） 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)

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6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd3vlua_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.94 — Periplasmic binding protein-like II
Superfamily Superfamily superfamilyc.94.1 — Periplasmic binding protein-like II
Family Family familyc.94.1.1 — Phosphate binding protein-like

CATH v4.4 (2 domains)

Domain ID domain_id3vluA01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology190 — D-Maltodextrin-Binding Protein; domain 2
Homologous superfamily homologous superfamily10 — Periplasmic binding protein-like II
Domain ID domain_id3vluA02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology190 — D-Maltodextrin-Binding Protein; domain 2
Homologous superfamily homologous superfamily10 — Periplasmic binding protein-like II
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7. Citations (1)