1KBU Hydrolase, Ligase Dna date Nov 06, 2001
title Cre Recombinase Bound To A Loxp Holliday Junction
authors S.S.Martin, E.Pulido, V.C.Chu, T.Lechner, E.P.Baldwin
compound source
Molecule: Loxp
Chain: C
Engineered: Yes
Other_details: Part Of Holliday Junction
Synthetic: Yes

Molecule: Loxp
Chain: D
Engineered: Yes
Other_details: Part Of Holliday Junction

Synthetic: Yes

Molecule: Cre Recombinase
Chain: A, B
Synonym: Cre Site-Specific Recombinase
Engineered: Yes
Other_details: Lys86 And Lys201 Interactions With The Sciss Suggest How Strand Exchange Order Is Determined

Organism_scientific: Enterobacteria Phage P1
Organism_taxid: 10678
Gene: Cre
Expression_system: Escherichia Coli Bl21(De3)
Expression_system_taxid: 469008
Expression_system_strain: Bl21(De3)
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet28b(+)
symmetry Space Group: C 2 2 21
R_factor 0.231 R_Free 0.279
length a length b length c angle alpha angle beta angle gamma
107.170 121.600 179.310 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.20 Å
related structures by homologous chain: 1MA7, 4CRX
A, B

Primary referenceThe order of strand exchanges in Cre-LoxP recombination and its basis suggested by the crystal structure of a Cre-LoxP Holliday junction complex., Martin SS, Pulido E, Chu VC, Lechner TS, Baldwin EP, J Mol Biol 2002 May 24;319(1):107-27. PMID:12051940
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (143 Kb) [Save to disk]
  • Biological Unit Coordinates (1kbu.pdb1.gz) 270 Kb
  • CSU: Contacts of Structural Units for 1KBU
  • Likely Quarternary Molecular Structure file(s) for 1KBU
  • Structure Factors (404 Kb)
  • Retrieve 1KBU in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1KBU from S2C, [Save to disk]
  • Re-refined 1kbu structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1KBU in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 1KBU
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 1KBU, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1kbua2, region A:130-341 [Jmol] [rasmolscript] [script source]
        - Domain d1kbua1, region A:18-129 [Jmol] [rasmolscript] [script source]
        - Domain d1kbub2, region B:130-341 [Jmol] [rasmolscript] [script source]
        - Domain d1kbub1, region B:19-129 [Jmol] [rasmolscript] [script source]
  • Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH
  • Summaries and structural analyses of PDB data files from PDBSum
  • Identification of Protein Pockets & Cavities at CASTp
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1kbu_C] [1kbu_A] [1kbu_B] [1kbu_D] [1kbu]
  • SWISS-PROT database: [P06956]
  • Domain organization of [RECR_BPP1] by SWISSPFAM
  • Other resources with information on 1KBU
  • Community annotation for 1KBU at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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