3PLA

Crystal structure of a catalytically active substrate-bound box C/D RNP from Sulfolobus solfataricus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.15 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.248 
  • R-Value Observed: 0.249 

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This is version 1.2 of the entry. See complete history


Literature

Structural basis for site-specific ribose methylation by box C/D RNA protein complexes.

Lin, J.Lai, S.Jia, R.Xu, A.Zhang, L.Lu, J.Ye, K.

(2011) Nature 469: 559-563

  • DOI: 10.1038/nature09688
  • Primary Citation of Related Structures:  
    3PLA

  • PubMed Abstract: 
  • Box C/D RNA protein complexes (RNPs) direct site-specific 2'-O-methylation of RNA and ribosome assembly. The guide RNA in C/D RNP forms base pairs with complementary substrates and selects the modification site using a molecular ruler. Despite many studies of C/D RNP structure, the fundamental questions of how C/D RNAs assemble into RNPs and how they guide modification remain unresolved ...

    Box C/D RNA protein complexes (RNPs) direct site-specific 2'-O-methylation of RNA and ribosome assembly. The guide RNA in C/D RNP forms base pairs with complementary substrates and selects the modification site using a molecular ruler. Despite many studies of C/D RNP structure, the fundamental questions of how C/D RNAs assemble into RNPs and how they guide modification remain unresolved. Here we report the crystal structure of an entire catalytically active archaeal C/D RNP consisting of a bipartite C/D RNA associated with two substrates and two copies each of Nop5, L7Ae and fibrillarin at 3.15-Å resolution. The substrate pairs with the second through the eleventh nucleotide of the 12-nucleotide guide, and the resultant duplex is bracketed in a channel with flexible ends. The methyltransferase fibrillarin binds to an undistorted A-form structure of the guide-substrate duplex and specifically loads the target ribose into the active site. Because interaction with the RNA duplex alone does not determine the site specificity, fibrillarin is further positioned by non-specific and specific protein interactions. Compared with the structure of the inactive C/D RNP, extensive domain movements are induced by substrate loading. Our results reveal the organization of a monomeric C/D RNP and the mechanism underlying its site-specific methylation activity.


    Organizational Affiliation

    National Institute of Biological Sciences, Beijing 102206, China.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Pre mRNA splicing proteinA, B, K388Saccharolobus solfataricusMutation(s): 1 
Gene Names: SSO0939
UniProt
Find proteins for Q97ZH3 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Explore Q97ZH3 
Go to UniProtKB:  Q97ZH3
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UniProt GroupQ97ZH3
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L7AeC, D, L130Saccharolobus solfataricus 98/2Mutation(s): 1 
Gene Names: rpl7aeSsol_1068
UniProt
Find proteins for D0KRE2 (Saccharolobus solfataricus (strain 98/2))
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Go to UniProtKB:  D0KRE2
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UniProt GroupD0KRE2
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Fibrillarin-like rRNA/tRNA 2'-O-methyltransferaseE, F, M232Saccharolobus solfataricusMutation(s): 1 
Gene Names: flpASSO0940C33_014
EC: 2.1.1
UniProt
Find proteins for P58032 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Explore P58032 
Go to UniProtKB:  P58032
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UniProt GroupP58032
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Entity ID: 4
MoleculeChainsLengthOrganismImage
C/D guide RNAG, H, N40synthetic construct
Protein Feature View
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  • Reference Sequence

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Entity ID: 5
MoleculeChainsLengthOrganismImage
RNA (5'-R(*CP*CP*AP*UP*GP*AP*GP*UP*GP*U)-3')I, J, O10synthetic construct
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SAH
Query on SAH

Download Ideal Coordinates CCD File 
P [auth E],
Q [auth F],
R [auth M]
S-ADENOSYL-L-HOMOCYSTEINE
C14 H20 N6 O5 S
ZJUKTBDSGOFHSH-WFMPWKQPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.15 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.248 
  • R-Value Observed: 0.249 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 241.199α = 90
b = 241.199β = 90
c = 145.408γ = 90
Software Package:
Software NamePurpose
PHASERphasing
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-01-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2018-10-17
    Changes: Data collection, Database references, Source and taxonomy