Biological Assembly 1  

 3D View: Structure

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 generated by PQS (software)

Biological Assembly 2  

 3D View: Structure

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 2 generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 42531.55 
• Atom Count: 2655 
• Residue Count: 300 
• Unique protein chains: 1
• Unique nucleic acid chains: 1

1E7K

Crystal structure of the spliceosomal 15.5kD protein bound to a U4 snRNA fragment

• DOI: 10.2210/pdb1E7K/pdb
• NDB: PR0055

• Classification: RNA BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2000-08-29 Released: 2001-02-19 
• Deposition Author(s): Vidovic, I., Nottrott, S., Harthmuth, K., Luhrmann, R., Ficner, R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.9 Å
• R-Value Free: 0.302 
• R-Value Work: 0.216 

Literature

Crystal Structure of the Spliceosomal 15.5Kd Protein Bound to a U4 Snrna Fragment

Vidovic, I., Nottrott, S., Hartmuth, K., Luhrmann, R., Ficner, R.

(2000) Mol.Cell 6: 1331

• PubMed: 11163207 


• PubMed Abstract: 
  

We have determined the crystal structure of a spliceosomal RNP complex comprising the 15.5kD protein of the human U4/U6.U5 tri-snRNP and the 5' stem-loop of U4 snRNA. The protein interacts almost exclusively with a purine-rich (5+2) internal loop within the 5' stem-loop, giving an unusual RNA fold characterized by two tandem sheared G-A base pairs, a high degree of purine stacking, and the accommodation of a single RNA base, rotated out of the RNA chain, in a pocket of the protein. Apart from yielding the structure of an important entity in the pre-mRNA splicing apparatus, this work also implies a model for the complex of the 15.5kD protein with box C/D snoRNAs. It additionally suggests a general recognition principle in a novel family of RNA binding proteins.

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Related Citations: 

• Functional Interaction of a Novel 15.5Kd [U4/U6.U5] Tri-Snrnp Protein with the 5' Stem-Loop of U4 Snrna
  Nottrott, S.,Hartmuth, K.,Fabrizio, P.,Urlaub, H.,Vidovic, I.,Ficner, R.,Luhrmann, R.
  (1999) Embo J. 18: 6119




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Organizational Affiliation: 

Institut für Molekularbiologie und Tumorforschung, Philipps-Universität Marburg, Emil-Mannkopff-Strasse 2, 35037 Marburg, Germany.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
15.5 KD RNA BINDING PROTEIN	A, B	128	Homo sapiens	Mutation(s): 0  Gene Names: SNU13 (NHP2L1)
Find proteins for P55769 (Homo sapiens) Go to Gene View: SNU13 Go to UniProtKB:  P55769

Entity ID: 2
Molecule	Chains	Length	Organism
RNA (5'-R(*GP*CP*CP*AP*AP*UP*GP*AP*GP*GP*UP*UP*UP* AP*UP*CP*CP*GP*AP*GP*G*C(-3')	C,D	22	Homo sapiens

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.9 Å
• R-Value Free: 0.302 
• R-Value Work: 0.216 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 45.756	α = 90.00
b = 55.287	β = 90.00
c = 146.735	γ = 90.00

Software Package:

Software Name	Purpose
SOLOMON	phasing
SOLVE	phasing
X-PLOR	refinement
SHARP	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-08-29 
• Released Date: 2001-02-19 
• Deposition Author(s): Vidovic, I., Nottrott, S., Harthmuth, K., Luhrmann, R., Ficner, R.

Revision History 

• Version 1.0: 2001-02-19
  Type: Initial release
• Version 1.1: 2011-05-08
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance