4GKF

Crystal structure and characterization of Cmr5 protein from Pyrococcus furiosus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.217 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure of Cmr5 from Pyrococcus furiosus and its functional implications

Park, J.H.Sun, J.Park, S.Y.Hwang, H.J.Park, M.Y.Shin, M.Kim, J.S.

(2013) Febs Lett. 587: 562-568

  • DOI: 10.1016/j.febslet.2013.01.029

  • PubMed Abstract: 
  • The bacterial acquired immune system consists of clustered regularly interspaced short palindromic repeats (CRISPRs) and CRIPSR-associated (Cas) genes, which include Cas-module repeat-associated mysterious proteins (Cmr). The six Cmr proteins of Pyro ...

    The bacterial acquired immune system consists of clustered regularly interspaced short palindromic repeats (CRISPRs) and CRIPSR-associated (Cas) genes, which include Cas-module repeat-associated mysterious proteins (Cmr). The six Cmr proteins of Pyrococcus furiosus (pfCmr1-pfCmr6) form a Cmr effector complex that functions against exogenous nucleic acid. Among the Cmr proteins, the role of pfCmr5 and its involvement in the complex's cleavage activity have been obscure. The elucidated pfCmr5 structure has two inserted α-helices compared with the other trimeric Cmr5 structure. However, pfCmr5 exists as a monomeric protein both in the crystalline state and in solution. In vitro assays indicate that pfCmr5 interacts with pfCmr4. These structural and biophysical data might help in understanding the complicated and ill-characterized Cmr effector complex.


    Organizational Affiliation

    Department of Chemistry and Institute of Basic Sciences, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju 500-757, Republic of Korea.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CRISPR system Cmr subunit Cmr5
A, B
169Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1)Gene Names: cmr5
Find proteins for Q8U1T0 (Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1))
Go to UniProtKB:  Q8U1T0
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.217 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 53.944α = 90.00
b = 53.944β = 90.00
c = 235.987γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data scaling
HKL-2000data collection
CNSphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-01-23
    Type: Initial release
  • Version 1.1: 2013-07-10
    Type: Database references