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(-) Description

Title :  CRYSTAL STRUCTURE OF AN ENGINEERED CRO MONOMER BOUND NONSPECIFICALLY TO DNA
 
Authors :  R. A. Albright, M. C. Mossing, B. W. Matthews
Date :  23 Apr 98  (Deposition) - 02 Dec 98  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  3.00
Chains :  Asym./Biol. Unit :  A,R,S
Keywords :  Cro, Protein-Dna Interaction, Bacteriophage Lambda, Repressor, Monomer-Dimer, Helix-Turn-Helix, Complex (Gene Regulating Protein/Dna), Gene Regulation/Dna Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  R. A. Albright, M. C. Mossing, B. W. Matthews
Crystal Structure Of An Engineered Cro Monomer Bound Nonspecifically To Dna: Possible Implications For Nonspecific Binding By The Wild-Type Protein.
Protein Sci. V. 7 1485 1998
PubMed-ID: 9684880
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - DNA (5'-D(*TP*AP*TP*CP*GP*AP*TP*A)-3')
    Chains: R, S
    Engineered: YES
    Other Details: 50% OCCUPANCY IN THE OUTERMOST POSITIONS
    Synthetic: YES
 
Molecule 2 - PROTEIN (CRO REPRESSOR)
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Gene: CRO MUTANT K56-[DGEVK]
    Expression System Plasmid: PUCRO.MDG
    Expression System Strain: X90
    Expression System Taxid: 562
    Mutation: YES
    Organism Scientific: ENTEROBACTERIA PHAGE LAMBDA
    Organism Taxid: 10710
    Other Details: WILDTYPE CRO DOES NOT FORM STABLE MONOMERS. THE ENGINEERED-MONOMER PRESENTED HERE CONTAINS A 5- RESIDUE INSERTION [DGEVK] FOLLOWING K 56. THE FIRST 2 RESIDUES OF THIS INSERTION ALLOW THE FORMATION OF A BETA- TURN. THE REMAINING 3 RESIDUES MIMIC RESIDUES OF THE WILDTYPE DIMER INTERFACE, ALLOWING STABILIZING INTERACTIONS TO BE MAINTAINED. THE OVERALL STRUCTURE OF THIS MONOMER IS QUITE SIMILAR TO A SUBUNIT OF THE WILDTYPE DIMER.

 Structural Features

(-) Chains, Units

  123
Asymmetric/Biological Unit : ARS

Summary Information (see also Sequences/Alignments below)

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(-) Cis Peptide Bonds  (1, 1)

Asymmetric/Biological Unit
No.Residues
1Phe A:63 -Pro A:64

 Sequence-Structure Mapping

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(-) Sequences/Alignments

Asymmetric/Biological Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
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SAPs(SNPs) PROSITE motifs Exons
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Chain A from PDB  Type:PROTEIN  Length:65
 aligned with RCRO_LAMBD | P03040 from UniProtKB/Swiss-Prot  Length:66

    Alignment length:65
                                                                                 56    57    
                                    11        21        31        41        51    |    -|    
            RCRO_LAMBD    2 EQRITLKDYAMRFGQTKTAKDLGVYQSAINKAIHAGRKIFLTINADGSVYAEEVK-----PFPSN 61
               SCOP domains d3orca_ A: cro lambda repressor                                   SCOP domains
               CATH domains 3orcA00 A:2-66 CRO Repressor                                      CATH domains
               Pfam domains Cro-3orcA01 A:2-56                                     ---------- Pfam domains
         Sec.struct. author ..eeehhhhhhhhhhhhhhhhh...hhhhhhhhhh...eeeeee...eeeeeeeee.eeeee... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------- Transcript
                  3orc A  2 EQRITLKDYAMRFGQTKTAKDLGVYQSAINKAIHAGRKIFLTINADGSVYAEEVKDGEVKPFPSN 66
                                    11        21        31        41        51        61     


Chain R from PDB  Type:DNA  Length:8
                                       
                  3orc R  1 TATCGATA  8


Chain S from PDB  Type:DNA  Length:8
                                       
                  3orc S  1 TATCGATA  8
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 Classification and Annotation

(-) SCOP Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Class: All alpha proteins (14657)

(-) CATH Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Clan: HTH (544)

(-) Gene Ontology  (3, 3)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (RCRO_LAMBD | P03040)
molecular function
    GO:0003677    DNA binding    Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
biological process
    GO:0006355    regulation of transcription, DNA-templated    Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
    GO:0006351    transcription, DNA-templated    The cellular synthesis of RNA on a template of DNA.

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    Phe A:63 - Pro A:64   [ RasMol ]  
 

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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        RCRO_LAMBD | P03040: 1cop 1d1l 1d1m 1orc 2a63 2ecs 2orc 2ovg 4cro 5cro 6cro

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