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6cro

CRYSTAL STRUCTURE OF LAMBDA-CRO BOUND TO A CONSENSUS OPERATOR AT 3.0 ANGSTROM RESOLUTION

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

LAMBDA CRO REPRESSOR

Enterobacteria phage lambda

UniProt P03040

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Homooligomer Protein 2 DNA 4 ;DNA (5'-D(*AP*CP*TP*AP*TP*CP*AP*CP*CP*GP*CP*GP*GP*GP*TP*GP*AP*TP*AP*C)-3') ; × 2 ;DNA (5'-D(*TP*GP*TP*AP*TP*CP*AP*CP*CP*CP*GP*CP*GP*GP*TP*GP*AP*TP*AP*G)-3') ; × 2 SULFATE ION × 2 water × 4 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer
1orc 2a63 2orc 2ovg

4 assemblies

Homodimer
1cop 1d1l 1d1m 2ecs 2ovg 2ovg 5cro 5cro

8 assemblies

Homotetramer
1d1l 1d1l 2ecs 5cro

4 assemblies

Other homooligomers
5cro

1 assemblies

Heteromeric or nucleic-acid complex
3orc 4cro 4cro 4cro 6cro

5 assemblies

View Construct and Data Evidence
UniProt name RCRO_LAMBD
Isoform —
PDB entities 3
Chains and sequence ranges Author chain A； PDBConstruct 1–60； UniProt 2–61

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_id6cro
Deposition date deposition_date1998-04-22
Structure title titleCRYSTAL STRUCTURE OF LAMBDA-CRO BOUND TO A CONSENSUS OPERATOR AT 3.0 ANGSTROM RESOLUTION
Keywords keywords;COMPLEX (TRANSCRIPTION REGULATION-DNA), CRO, BACTERIOPHAGE LAMBDA, CONFORMATIONAL CHANGE, REPRESSOR, HELIX-TURN-HELIX, GENE REGULATION-DNA COMPLEX ;; GENE REGULATION/DNA
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.

6cro__assembly_1__model_1

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

Download this curve (.dat)

6cro__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.

6cro__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）21.11 Å
Rg (electron density)20.87 Å
Total Rg21.34 Å
Atom count2582
Residues200
Excluded volume40715 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 6cro__assembly_1__model_1 hexameric （6） 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 (5)

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd6croa_
Class classa — All alpha proteins
Fold Fold folda.35 — lambda repressor-like DNA-binding domains
Superfamily Superfamily superfamilya.35.1 — lambda repressor-like DNA-binding domains
Family Family familya.35.1.2 — Phage repressors

CATH v4.4 (1 domains)

Domain ID domain_id6croA00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology240 — CRO Repressor
Homologous superfamily homologous superfamily10 — CRO Repressor
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7. Citations (5)