2A11

Structure of the nuclease domain of ribonuclease III from M. tuberculosis at 2.1 A

(2005) Protein Sci 14: 2744-2750

• PubMed: 16155207 Search on PubMedSearch on PubMed Central
• DOI: https://doi.org/10.1110/ps.051665905
• Primary Citation of Related Structures:  
  2A11


• PubMed Abstract: 
  

  RNase III enzymes are a highly conserved family of proteins that specifically cleave double-stranded (ds)RNA. These proteins are involved in a diverse group of functions, including ribosomal RNA processing, mRNA maturation and decay, snRNA and snoRNA processing, and RNA interference. Here we report the crystal structure of the nuclease domain of RNase III from the pathogen Mycobacterium tuberculosis. Although globally similar to other RNase III folds, this structure has some features not observed in previously reported models. These include the presence of an additional metal ion near the catalytic site, as well as conserved secondary structural elements that are proposed to have functional roles in the recognition of dsRNAs.

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Organizational Affiliation: 

Department of Molecular and Cellular Biology, University of California, Berkeley, Berkeley, CA 94720, USA.