1E21

Ribonuclease 1 des1-7 Crystal Structure at 1.9A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Three-Dimensional Crystal Structure of Human Rnase 1Dn7 at 1.9A Resolution

Pous, J.Mallorqui-Fernandez, G.Peracaula, R.Terzyan, S.S.Futami, J.Tada, H.Yamada, H.Seno, M.De Llorens, R.Gomis-Ruth, F.X.Coll, M.

(2001) Acta Crystallogr.,Sect.D 57: 498


  • PubMed Abstract: 
  • Human pancreatic ribonuclease 1 (RNase 1) is considered to be the human counterpart of bovine pancreatic RNase A. Truncation of seven amino-acid residues from the amino-terminal sequence resulted in RNase 1 Delta N7, which has a reduced ribonucleolyt ...

    Human pancreatic ribonuclease 1 (RNase 1) is considered to be the human counterpart of bovine pancreatic RNase A. Truncation of seven amino-acid residues from the amino-terminal sequence resulted in RNase 1 Delta N7, which has a reduced ribonucleolytic activity and a lower affinity for the human placental RNase inhibitor (PRI). This RNase 1 variant has been cloned, heterologously overexpressed, purified and crystallized. Its crystal structure has been determined and refined using data to 1.9 A resolution. The molecule displays the alpha + beta folding topology typical of members of the RNase A superfamily. The main distinct features found in RNase 1 Delta N7 are basically located in three loops affecting the fitting of the enzyme to the active site of subtilisin and the shape of the B2 subsite. These changes, taken with the lack of the catalytically active residue Lys7, may explain the reduced affinity of RNase 1 Delta N7 for PRI and the low ribonucleolytic activity of the protein when compared with the native enzyme.


    Organizational Affiliation

    Institut de Biologia Molecular de Barcelona, CID--CSIC, Jordi Girona 18--26, 08034 Barcelona, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RIBONUCLEASE 1
A
128Homo sapiensGene Names: RNASE1 (RIB1, RNS1)
EC: 3.1.27.5
Find proteins for P07998 (Homo sapiens)
Go to Gene View: RNASE1
Go to UniProtKB:  P07998
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.196 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 32.691α = 90.00
b = 42.733β = 90.00
c = 79.894γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
AMoREphasing
SCALAdata scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-05-03
    Type: Initial release
  • Version 1.1: 2013-01-16
    Type: Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Other, Refinement description, Source and taxonomy, Structure summary, Version format compliance