1CL4

NUCLEOCAPSID PROTEIN FROM MASON-PFIZER MONKEY VIRUS (MPMV)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 40 
  • Conformers Submitted: 12 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution structure and backbone dynamics of Mason-Pfizer monkey virus (MPMV) nucleocapsid protein.

Gao, Y.Kaluarachchi, K.Giedroc, D.P.

(1998) Protein Sci. 7: 2265-2280

  • DOI: 10.1002/pro.5560071104

  • PubMed Abstract: 
  • Retroviral nucleocapsid proteins (NCPs) are CCHC-type zinc finger proteins that mediate virion RNA binding activities associated with retrovirus assembly and genomic RNA encapsidation. Mason-Pfizer monkey virus (MPMV), a type D retrovirus, encodes a ...

    Retroviral nucleocapsid proteins (NCPs) are CCHC-type zinc finger proteins that mediate virion RNA binding activities associated with retrovirus assembly and genomic RNA encapsidation. Mason-Pfizer monkey virus (MPMV), a type D retrovirus, encodes a 96-amino acid nucleocapsid protein, which contains two Cys-X2-Cys-X4-His-X4-Cys (CCHC) zinc fingers connected by an unusually long 15-amino acid linker. Homonuclear, two-dimensional sensitivity-enhanced 15N-1H, three-dimensional 15N-1H, and triple resonance NMR spectroscopy have been used to determine the solution structure and residue-specific backbone dynamics of the structured core domain of MPMV NCP containing residues 21-80. Structure calculations and spectral density mapping of N-H bond vector mobility reveal that MPMV NCP 21-80 is best described as two independently folded, rotationally uncorrelated globular domains connected by a seven-residue flexible linker consisting of residues 42-48. The N-terminal CCHC zinc finger domain (residues 24-37) appears to adopt a fold like that described previously for HIV-1 NCP; however, residues within this domain and the immediately adjacent linker region (residues 38-41) are characterized by extensive conformational averaging on the micros-ms time scale at 25 degrees C. In contrast to other NCPs, residues 49-77, which includes the C-terminal CCHC zinc-finger (residues 53-66), comprise a well-folded globular domain with the Val49-Pro-Gly-Leu52 sequence and C-terminal tail residues 67-77 characterized by amide proton exchange properties and 15N R1, R2, and (1H-15N) NOE values indistinguishable to residues in the core C-terminal finger. Twelve refined structural models of MPMV NCP residues 49-80 (pairwise backbone RMSD of 0.77 A) reveal that the side chains of the conserved Pro50 and Trp62 are in van der Waals contact with one another. Residues 70-73 in the C-terminal tail adopt a reverse turn-like structure. Ile77 is involved in extensive van der Waals contact with the core finger domain, while the side chains of Ser68 and Asn75 appear to form hydrogen bonds that stabilize the overall fold of this domain. These residues outside of the core finger structure are conserved in D-type and related retroviral NCPs, e.g., MMTV NCP, suggesting that the structure of MPMV NCP may be representative of this subclass of retroviral NCPs.


    Organizational Affiliation

    Center for Macromolecular Design, Department of Biochemistry and Biophysics, Texas A&M University, College Station 77843-2128, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (GAG POLYPROTEIN)
A
60Mason-Pfizer monkey virusGene Names: gag
Find proteins for P07567 (Mason-Pfizer monkey virus)
Go to UniProtKB:  P07567
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 40 
  • Conformers Submitted: 12 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 
  • Olderado: 1CL4 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-05-11
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance