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1xs9

A MODEL OF THE TERNARY COMPLEX FORMED BETWEEN MARA, THE ALPHA-CTD OF RNA POLYMERASE AND DNA

Method: SOLUTION NMR
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Multiple antibiotic resistance protein marA

Escherichia coli

UniProt P0ACH5

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 2 DNA 2 5'-D(P*GP*AP*TP*TP*TP*AP*GP*CP*AP*AP*AP*AP*CP*GP*TP*GP*GP*CP*AP*T)-3' × 1 5'-D(P*AP*TP*GP*CP*CP*AP*CP*GP*TP*TP*TP*TP*GP*CP*TP*AP*AP*AP*TP*C)-3' × 1 DNA-directed RNA polymerase alpha chain × 1 （P0A7Z4） Consistent with all polymers

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1bl0 1xs9

2 assemblies

View Construct and Data Evidence
UniProt name MARA_ECOLI
Isoform —
PDB entities 3
Chains and sequence ranges Author chain A； PDBConstruct 4–132； UniProt 1–129

DNA-directed RNA polymerase alpha chain

Escherichia coli

UniProt P0A7Z4

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 2 DNA 2 5'-D(P*GP*AP*TP*TP*TP*AP*GP*CP*AP*AP*AP*AP*CP*GP*TP*GP*GP*CP*AP*T)-3' × 1 5'-D(P*AP*TP*GP*CP*CP*AP*CP*GP*TP*TP*TP*TP*GP*CP*TP*AP*AP*AP*TP*C)-3' × 1 Multiple antibiotic resistance protein marA × 1 （P0ACH5） Consistent with all polymers

Other States of the Same Protein in the Database

Monomer
1coo 3k4g 3k4g 3k4g 3k4g 3k4g 3k4g 3k4g 3k4g

9 assemblies

Homodimer

None

Homotetramer
1bdf

1 assemblies

Other homooligomers

None

Heteromeric or nucleic-acid complex
10ma 10mb 10mc 10md 1lb2 1xs9 2jzb 3iyd 3lu0 3n4m 3n97 4jk1

296 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name RPOA_ECOLI
Isoform —
PDB entities 4
Chains and sequence ranges Author chain D； PDBConstruct 4–84； UniProt 249–329

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_id1xs9
Deposition date deposition_date2004-10-18
Structure title titleA MODEL OF THE TERNARY COMPLEX FORMED BETWEEN MARA, THE ALPHA-CTD OF RNA POLYMERASE AND DNA
Keywords keywordsPROTEIN-DNA COMPLEX, TERNARY COMPLEX, MARA, RNA POLYMERASE, TRANSCRIPTION-DNA COMPLEX; TRANSCRIPTION/DNA
Experimental Method methodSOLUTION NMR
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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.

1xs9__assembly_1__model_1

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

Download this curve (.dat)

1xs9__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.

1xs9__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）23.59 Å
Rg (electron density)22.77 Å
Total Rg23.60 Å
Atom count4720
Residues250
Excluded volume42552 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1xs9__assembly_1__model_1 tetrameric （4） 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 (1 domains)

Domain ID domain_idd1xs9a_
Class classi — Low resolution protein structures
Fold Fold foldi.11 — Computational models partly based on experimental data
Superfamily Superfamily superfamilyi.11.1 — Computational models partly based on experimental data
Family Family familyi.11.1.1 — Computational models partly based on experimental data

CATH v4.4 (3 domains)

Domain ID domain_id1xs9A01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily60 — Homeodomain-like
Domain ID domain_id1xs9A02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily60 — Homeodomain-like
Domain ID domain_id1xs9D00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily20 — 5' to 3' exonuclease, C-terminal subdomain
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7. Citations (1)