1FUT

CRYSTAL STRUCTURES OF RIBONUCLEASE F1 OF FUSARIUM MONILIFORME IN ITS FREE FORM AND IN COMPLEX WITH 2'GMP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Observed: 0.168 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Crystal structures of ribonuclease F1 of Fusarium moniliforme in its free form and in complex with 2'GMP.

Vassylyev, D.G.Katayanagi, K.Ishikawa, K.Tsujimoto-Hirano, M.Danno, M.Pahler, A.Matsumoto, O.Matsushima, M.Yoshida, H.Morikawa, K.

(1993) J Mol Biol 230: 979-996

  • DOI: https://doi.org/10.1006/jmbi.1993.1214
  • Primary Citation of Related Structures:  
    1FUS, 1FUT

  • PubMed Abstract: 

    RNase F1, a guanine-specific ribonuclease from Fusarium moniliforme, was crystallized in two different forms, in the absence of an inhibitor and in the presence of 2'GMP. The crystal structure of the RNase F1 free form was solved by the molecular replacement method, using the co-ordinates of the RNase T1 complex with 2'GMP, and was refined to a final R-factor of 18.7%, using the data extended to 1.3 A resolution. For the crystal structure of the RNase F1 complex with 2'GMP, the solution of the molecular replacement method was obtained on the basis of the co-ordinates of the RNase F1 free form, and was refined to a final R-factor of 16.8%, using the data up to 2 A resolution. The two crystal structures of the RNase F1 free form and the complex with 2'GMP are very similar to each other as reflected by a small root-mean-square displacement (r.m.s.d.) value of 0.43 A for all C alpha atoms. The main differences between the two structures are associated with binding of 2'GMP in the substrate recognition site in the loop between Tyr42 and Glu46. A structural comparison between RNase F1 and RNase T1 shows a substantial similarity between all the C alpha atoms, as evidenced by a r.m.s.d. value of 1.4 A. The loop from residues 32 to 38 was strikingly different between these two enzymes, in both its conformation and its hydrogen bonding schemes. The side-chain of a catalytically active residue, His92, is shifted away from the catalytic site in RNase F1 by 1.3 A and 0.85 A with respect to the corresponding positions in the RNase T1 free form and in the RNase T1 complex with 2'GMP, respectively. In the RNase F1 complex, the guanine base of 2'GMP has a syn conformation about the glycosyl bond, and the furanose ring assumes a 3'-exo pucker, which is different from that found in the complex with RNase T1. In the catalytic site of the RNase F1 complex with 2'GMP, one water molecule was observed, which bridges the phosphate oxygen atoms of 2'GMP and the side-chains of the catalytically important residues, His92 and Arg77, through hydrogen bonds. A water molecule occupying the same position was found in the RNase F1 free form. The significance of this water molecule in the hydrolytic reaction is discussed.


  • Organizational Affiliation

    Protein Engineering Research Institute, Osaka, Japan.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RIBONUCLEASE F1106Fusarium fujikuroiMutation(s): 0 
EC: 3.1.27.3
UniProt
Find proteins for P10282 (Gibberella fujikuroi)
Explore P10282 
Go to UniProtKB:  P10282
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP10282
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
2GP
Query on 2GP

Download Ideal Coordinates CCD File 
B [auth A]GUANOSINE-2'-MONOPHOSPHATE
C10 H14 N5 O8 P
WTIFIAZWCCBCGE-UUOKFMHZSA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
PCA
Query on PCA
A
L-PEPTIDE LINKINGC5 H7 N O3GLN
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Observed: 0.168 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 40.16α = 90
b = 40.16β = 90
c = 120.85γ = 120
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-11-29
    Changes: Derived calculations, Other
  • Version 2.0: 2019-12-25
    Changes: Database references, Derived calculations, Polymer sequence