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6xfk

Crystal structure of the type III secretion system pilotin-secretin complex InvH-InvG

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

Type 3 secretion system pilotin

Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)

UniProt P0CL43

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 2 Type 3 secretion system secretin × 1 （P35672） SULFATE ION × 2 water × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer
6xfj 6xfj

2 assemblies

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
6xfk 6xfl

2 assemblies

View Construct and Data Evidence
UniProt name INVH_SALTY
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 5–68； UniProt 84–147

Type 3 secretion system secretin

OrganismNot specified

UniProt P35672

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 2 Type 3 secretion system pilotin × 1 （P0CL43） SULFATE ION × 2 water × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
4g08

1 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers
2y9k 3j1v 5tcq 6dv3 6dv6 6pee

6 assemblies

Heteromeric or nucleic-acid complex
5tcr 6pem 6pep 6q14 6q15 6q16 6xfk 6xfl 7ah9 7ahi

10 assemblies

View Construct and Data Evidence
UniProt name SCTC_SALTY
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B； PDBConstruct 1–16； UniProt 543–558

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_id6xfk
Deposition date deposition_date2020-06-15
Structure title titleCrystal structure of the type III secretion system pilotin-secretin complex InvH-InvG
Keywords keywordspilotin, secretin, chaperone, type III secretion, PROTEIN TRANSPORT; PROTEIN TRANSPORT
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.

6xfk__assembly_1__model_1

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

Download this curve (.dat)

6xfk__assembly_1__model_1 | I(q)

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

6xfk__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）13.47 Å
Rg (electron density)11.84 Å
Total Rg13.36 Å
Atom count628
Residues74
Excluded volume11119 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 6xfk__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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7. Citations (1)