CRISPR-associated exonuclease Cas4 - Q97TX9 (CAS4_SULSO)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for Q97TX9: 1
 
Function
CRISPR (clustered regularly interspaced short palindromic repeat) is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA) (By similarity). This protein is a 5' to 3' partially processive exonuclease that cleaves off single mononucleotides. Has a marked preference for ssDNA, although in vitro it also acts on dsDNA and ssRNA. Has low endonuclease activity with circular ssDNA. Binds ssDNA and can unwind dsDNA; unwinding does not require ATP. (data source: UniProt  )
Catalytic Activity

Exonucleolytic cleavage in the 5'- to 3'-direction to yield nucleoside 3'-phosphates.

(data source: UniProt  )
Subunit structure
Homodecamer, formed by the assembly of dimers into a decameric toroid, with the active sites oriented towards the central tunnel. (data source: UniProt  )
UniProtKB:
Length:
Other Gene names: cas4 SSO0001
Full screen
Display Options
Zoom
min
max
Sort by
Color by
 
Legend
The Protein Feature View requires a browser that supports SVG (Scalable Vector Graphics). Mouse over tracks and labels for more information.
Data origin/color codes
The vertical color bar on the left side indicates data provenance.
Data in green originates from UniProtKB  
Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
  • Red: potentially disorderd region
  • Blue: probably ordered region.
Hydropathy has been calculated using a sliding window of 15 residues and summing up scores from standard hydrophobicity tables.
  • Red: hydrophobic
  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
Data in red indicates combined ranges of Homology Models from SBKB   and the Protein Model Portal  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
Organism icons generated by flaticon.com under CC BY. The authors are: Freepik, Icons8, OCHA, Scott de Jonge.