1HJI

BACTERIOPHAGE HK022 NUN-PROTEIN-NUTBOXB-RNA COMPLEX


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 120 
  • Conformers Submitted: 20 
  • Selection Criteria: LOWEST ENERGY 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The Structure of the Coliphage Hk022 Nun Protein-Lambda-Phage Boxb RNA Complex. Implications for the Mechanism of Transcription Termination

Faber, C.Schaerpf, M.Becker, T.Sticht, H.Roesch, P.

(2001) J.Biol.Chem. 276: 32064

  • DOI: 10.1074/jbc.M102975200

  • PubMed Abstract: 
  • Nun protein from coliphage HK022 binds to phage boxB RNA and functions, in contrast to phage lambda N protein, as a transcriptional terminator. The basic Nun-(10-44) peptide contains the boxB RNA binding arginine rich motif, ARM. The peptide binds bo ...

    Nun protein from coliphage HK022 binds to phage boxB RNA and functions, in contrast to phage lambda N protein, as a transcriptional terminator. The basic Nun-(10-44) peptide contains the boxB RNA binding arginine rich motif, ARM. The peptide binds boxB RNA and competes with the phage lambda ARM peptide N-(1-36) as indicated by nuclear magnetic resonance (NMR) spectroscopy titrations. In two-dimensional nuclear Overhauser enhancement spectroscopy experiments boxB RNA in complex with Nun-(20-44) exhibits the same pattern of resonances as it does in complex with N peptides containing the ARM, and we could show that Nun-(20-44) forms a bent alpha-helix upon binding to the boxB RNA. The structure of the boxB RNA-bound Nun-(20-44) was determined on the basis of 191 intra- and 30 intermolecular distance restraints. Ser-24 is anchored to the lower RNA stem, and stacking of Tyr-39 and A7 is clearly experimentally indicated. Arg-28 shows numerous contacts to the RNA stem. Leu-22, Ile-30, Trp-33, Ile-37, and Leu-41 form a hydrophobic surface, which could be a recognition site for additional host factors such as NusG. Such a hydrophobic surface area is not present in N-(1-36) bound to boxB RNA.


    Related Citations: 
    • Antitermination in Bacteriophage Lambda: The Structure of the N36 Peptide-Boxb RNA Complex
      Schaerpf, M.,Sticht, H.,Schweimer, K.,Boehm, M.,Hoffmann, S.,Roesch, P.
      (2000) Eur.J.Biochem. 267: 2397


    Organizational Affiliation

    Lehrstuhl für Biopolymere, Universität Bayreuth, Universitätsstr. 30, 95440 Bayreuth, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
NUN-PROTEIN
B
26Escherichia phage HK022Mutation(s): 0 
Gene Names: nun
Find proteins for P18683 (Escherichia phage HK022)
Go to UniProtKB:  P18683
Entity ID: 1
MoleculeChainsLengthOrganism
RNA (5-R(P*GP*CP*CP*CP*UP*GP*AP*AP*AP*AP*AP*GP*GP*GP*C)-3)A15Escherichia virus Lambda
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 120 
  • Conformers Submitted: 20 
  • Selection Criteria: LOWEST ENERGY 
  • Olderado: 1HJI Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-01-29
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-06-14
    Type: Structure summary