1dkp

CRYSTAL STRUCTURE OF PHYTATE COMPLEX OF ESCHERICHIA COLI PHYTASE AT PH 6.6. PHYTATE IS BOUND WITH ITS 3-PHOSPHATE IN THE ACTIVE SITE. HG2+ CATION ACTS AS AN INTERMOLECULAR BRIDGE

Method: X-RAY DIFFRACTION

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

PHYTASE

Escherichia coli

UniProt P07102

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein monomer Monomer Protein 1 MERCURY (II) ION × 4 INOSITOL HEXAKISPHOSPHATE × 1 water × 1 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name PPA_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–410; UniProt 23–432

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_id1dkp
Deposition date deposition_date1999-12-08
Structure title titleCRYSTAL STRUCTURE OF PHYTATE COMPLEX OF ESCHERICHIA COLI PHYTASE AT PH 6.6. PHYTATE IS BOUND WITH ITS 3-PHOSPHATE IN THE ACTIVE SITE. HG2+ CATION ACTS AS AN INTERMOLECULAR BRIDGE
Keywords keywordsHISTIDINE ACID PHOSPHATASE FOLD, HYDROLASE; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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.

1dkp__assembly_1__model_1

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

Download this curve (.dat)

1dkp__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.

1dkp__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)22.64 Å
Rg (electron density)21.69 Å
Total Rg22.37 Å
Atom count3180
Residues410
Excluded volume56379 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1dkp__assembly_1__model_1 monomeric (1) Success 4.1.3-1-20251215 (887e7ef) View Download

4. Crystallography and Experiment 4. Crystallography & Experiment

5. Entities and Polymers Entities & Polymers (4)

6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1dkpa_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.60 — Phosphoglycerate mutase-like
Superfamily Superfamily superfamilyc.60.1 — Phosphoglycerate mutase-like
Family Family familyc.60.1.2 — Histidine acid phosphatase

CATH v4.4 (2 domains)

Domain ID domain_id1dkpA01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily1240 — Phosphoglycerate mutase-like
Domain ID domain_id1dkpA02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily1240 — Phosphoglycerate mutase-like

7. Citations (3)