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2zzv

Crystal Structure of a Periplasmic Substrate Binding Protein in Complex with Calcium and Lactate

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

ABC transporter, solute-binding protein

Thermus thermophilus

UniProt Q5SK82

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 2 LACTIC ACID × 2 CALCIUM ION × 2 water × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
7e9y

1 assemblies

Homodimer
2zzv 2zzw 2zzx 2zzx

4 assemblies

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
8zmz

1 assemblies

View Construct and Data Evidence
UniProt name Q5SK82_THET8
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–361； UniProt 1–361 Author chain B； PDBConstruct 1–361； UniProt 1–361

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_id2zzv
Deposition date deposition_date2009-02-27
Structure title titleCrystal Structure of a Periplasmic Substrate Binding Protein in Complex with Calcium and Lactate
Keywords keywordsperiplasmic substrate binding protein, calcium, lactate, TRAP transporter, TRANSPORT PROTEIN; TRANSPORT 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.

2zzv__assembly_1__model_1

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

Download this curve (.dat)

2zzv__assembly_1__model_1 | I(q)

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

2zzv__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）26.00 Å
Rg (electron density)24.85 Å
Total Rg25.88 Å
Atom count5288
Residues660
Excluded volume94661 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2zzv__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)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd2zzva_
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.94.1.0 — automated matches
Domain ID domain_idd2zzvb_
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.94.1.0 — automated matches

CATH v4.4 (2 domains)

Domain ID domain_id2zzvA00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology190 — D-Maltodextrin-Binding Protein; domain 2
Homologous superfamily homologous superfamily170 — Bacterial extracellular solute-binding protein, family 7
Domain ID domain_id2zzvB00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology190 — D-Maltodextrin-Binding Protein; domain 2
Homologous superfamily homologous superfamily170 — Bacterial extracellular solute-binding protein, family 7
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7. Citations (1)