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1ko7

X-ray structure of the HPr kinase/phosphatase from Staphylococcus xylosus at 1.95 A resolution

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

Hpr kinase/phosphatase

Staphylococcus xylosus

UniProt Q9S1H5

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 3 PHOSPHATE ION × 9 water × 3 Consistent with protein count
2 Protein homooligomer Homooligomer Protein 3 PHOSPHATE ION × 9 water × 3 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers
1ko7 1ko7

2 assemblies

Heteromeric or nucleic-acid complex

None

View Construct and Data Evidence
UniProt name HPRK_STAXY
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–314； UniProt 1–314 Author chain B； PDBConstruct 1–314； UniProt 1–314

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_id1ko7
Deposition date deposition_date2001-12-20
Structure title titleX-ray structure of the HPr kinase/phosphatase from Staphylococcus xylosus at 1.95 A resolution
Keywords keywordsProtein kinase, phosphotransfer, protein phosphatase, dual activity, product, substrate, TRANSFERASE, HYDROLASE; TRANSFERASE,HYDROLASE
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.

1ko7__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1ko7__assembly_2__model_1 | I(q)

10-2 10-1 106 107 108 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1ko7__assembly_2__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）43.42 Å
Rg (electron density)43.57 Å
Total Rg43.36 Å
Atom count6771
Residues855
Excluded volume121170 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1ko7__assembly_1__model_1 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 1ko7__assembly_2__model_1 trimeric （3） 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 (3)

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1ko7a1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.98 — MurF and HprK N-domain-like
Superfamily Superfamily superfamilyc.98.2 — HprK N-terminal domain-like
Family Family familyc.98.2.1 — HPr kinase/phoshatase HprK N-terminal domain
Domain ID domain_idd1ko7a2
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.91 — PEP carboxykinase-like
Superfamily Superfamily superfamilyc.91.1 — PEP carboxykinase-like
Family Family familyc.91.1.2 — HPr kinase HprK C-terminal domain
Domain ID domain_idd1ko7b1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.98 — MurF and HprK N-domain-like
Superfamily Superfamily superfamilyc.98.2 — HprK N-terminal domain-like
Family Family familyc.98.2.1 — HPr kinase/phoshatase HprK N-terminal domain
Domain ID domain_idd1ko7b2
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.91 — PEP carboxykinase-like
Superfamily Superfamily superfamilyc.91.1 — PEP carboxykinase-like
Family Family familyc.91.1.2 — HPr kinase HprK C-terminal domain

CATH v4.4 (4 domains)

Domain ID domain_id1ko7A01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology1390 — Udp-n-acetylmuramoylalanyl-d-glutamate--2,6- Diaminopimelate Ligase; Chain: A, domain 1
Homologous superfamily homologous superfamily20 — HprK N-terminal domain-like
Domain ID domain_id1ko7A02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
Domain ID domain_id1ko7B01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology1390 — Udp-n-acetylmuramoylalanyl-d-glutamate--2,6- Diaminopimelate Ligase; Chain: A, domain 1
Homologous superfamily homologous superfamily20 — HprK N-terminal domain-like
Domain ID domain_id1ko7B02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
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7. Citations (1)