1GSP

RIBONUCLEASE T1 COMPLEXED WITH 2',3'-CGPS, 1 DAY

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.151 
  • R-Value Observed: 0.151 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history. 


Literature

Hydrolysis of a slow cyclic thiophosphate substrate of RNase T1 analyzed by time-resolved crystallography.

Zegers, I., Loris, R., Dehollander, G., Fattah Haikal, A., Poortmans, F., Steyaert, J., Wyns, L.

(1998) Nat Struct Biol 5: 280-283

  • DOI: https://doi.org/10.1038/nsb0498-280
  • Primary Citation of Related Structures:  
    1GSP, 2GSP, 3GSP, 4GSP, 5GSP, 6GSP, 7GSP

  • PubMed Abstract: 

    Here we present a time-resolved crystallographic analysis of the hydrolysis of exo (Sp) guanosine 2',3'-cyclophosphorothioate by RNase T1. The use of a slow substrate and fast crystallization methods made it possible to perform the study with conventional data-collection techniques. The results support the idea that the hydrolysis reaction proceeds through a mechanism that is the inverse of the transesterification reaction. In addition, the structures provide an explanation for the differential behavior of RNase T1 towards exo- and endo-cyclic thiophosphates.

    • Organizational Affiliation: 

    Laboratorium voor Ultrastructuur, Vlaams Interuniversitair Instituut voor Biotechnologie, Vrije Universiteit Brussel, Belgium. [email protected]


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RIBONUCLEASE T1104Aspergillus oryzaeMutation(s): 0 
EC: 3.1.27.3 (PDB Primary Data), 4.6.1.24 (UniProt)
UniProt
Find proteins for P00651 (Aspergillus oryzae (strain ATCC 42149 / RIB 40))
Explore P00651 
Go to UniProtKB:  P00651
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00651
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.151 
  • R-Value Observed: 0.151 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.13α = 90
b = 51.02β = 90
c = 40.53γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-02-25
    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: 2023-08-09
    Changes: Database references, Derived calculations, Refinement description
  • Version 1.4: 2024-11-20
    Changes: Data collection, Structure summary