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1f44

CRYSTAL STRUCTURE OF TRIMERIC CRE RECOMBINASE-LOX COMPLEX

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

CRE RECOMBINASE

Enterobacteria phage P1

UniProt P06956

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Homooligomer Protein 3 DNA 6 ;DNA (5'- D(*TP*AP*TP*AP*AP*CP*TP*TP*CP*GP*TP*AP*TP*AP*GP*C)-3') ; × 3 ;DNA (5'-D(*AP*TP*AP*TP*GP*CP*TP*AP*TP*AP*CP*GP*AP*AP*GP*TP*TP*AP*T)-3') ; × 3 water × 9 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
1drg 1f44 1kbu 1ma7 1nzb 1ouq 1pvp 1pvq 1pvr 1q3u 1q3v 1xns

25 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name RECR_BPP1
Isoform —
PDB entities 3
Chains and sequence ranges Author chain A； PDBConstruct 1–324； UniProt 20–343

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_id1f44
Deposition date deposition_date2000-06-07
Structure title titleCRYSTAL STRUCTURE OF TRIMERIC CRE RECOMBINASE-LOX COMPLEX
Keywords keywords;SITE-SPECIFIC RECOMBINASE, RECOMBINATION, PROTEIN-DNA COMPLEX, TRIMERIC, THREE-WAY JUNCTION, BRANCHED DNA, Y-JUNCTION, HYDROLASE, LIGASE/DNA, LIGASE-DNA complex ;; HYDROLASE, LIGASE/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.

1f44__assembly_1__model_1

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

Download this curve (.dat)

1f44__assembly_1__model_1 | I(q)

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

1f44__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）34.89 Å
Rg (electron density)33.82 Å
Total Rg34.38 Å
Atom count9651
Residues1053
Excluded volume164080 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1f44__assembly_1__model_1 nonameric （9） 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 (2 domains)

Domain ID domain_idd1f44a1
Class classa — All alpha proteins
Fold Fold folda.60 — SAM domain-like
Superfamily Superfamily superfamilya.60.9 — lambda integrase-like, N-terminal domain
Family Family familya.60.9.1 — lambda integrase-like, N-terminal domain
Domain ID domain_idd1f44a2
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.163 — DNA breaking-rejoining enzymes
Superfamily Superfamily superfamilyd.163.1 — DNA breaking-rejoining enzymes
Family Family familyd.163.1.1 — Lambda integrase-like, catalytic core

CATH v4.4 (2 domains)

Domain ID domain_id1f44A01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology443 — hpI Integrase; Chain A
Homologous superfamily homologous superfamily10 — Intergrase catalytic core
Domain ID domain_id1f44A02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily130 — Tyrosine recombinase, N-terminal domain
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7. Citations (1)