Ribonuclease 1 des1-7 Crystal Structure at 1.9A

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.196 

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This is version 1.2 of the entry. See complete history


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 D Biol Crystallogr 57: 498

  • DOI: https://doi.org/10.1107/s0907444901001147
  • Primary Citation of Related Structures:  

  • 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 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.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RIBONUCLEASE 1128Homo sapiensMutation(s): 1 
UniProt & NIH Common Fund Data Resources
Find proteins for P07998 (Homo sapiens)
Explore P07998 
Go to UniProtKB:  P07998
GTEx:  ENSG00000129538 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP07998
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.196 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 32.691α = 90
b = 42.733β = 90
c = 79.894γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2001-05-03
    Type: Initial release
  • Version 1.1: 2013-01-16
    Changes: Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Other, Refinement description, Source and taxonomy, Structure summary, Version format compliance
  • Version 1.2: 2023-12-06
    Changes: Data collection, Database references, Refinement description