Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 20.83 kDa 
• Atom Count: 1496 
• Modelled Residue Count: 170 
• Deposited Residue Count: 182 
• Unique protein chains: 1

1UP1

UP1, THE TWO RNA-RECOGNITION MOTIF DOMAIN OF HNRNP A1

• PDB DOI: 10.2210/pdb1UP1/pdb

• Classification: NUCLEAR PROTEIN
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 1997-03-12 Released: 1997-09-17 
• Deposition Author(s): Xu, R.-M., Jokhan, L., Cheng, X., Mayeda, A., Krainer, A.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.254 
• R-Value Work: 0.197 
• R-Value Observed: 0.197 

Literature

Crystal structure of human UP1, the domain of hnRNP A1 that contains two RNA-recognition motifs.

Xu, R.M., Jokhan, L., Cheng, X., Mayeda, A., Krainer, A.R.

(1997) Structure 5: 559-570

• PubMed: 9115444 
• DOI: 10.1016/s0969-2126(97)00211-6
• Primary Citation of Related Structures:  
  1UP1


• PubMed Abstract: 
  

Heterogeneous nuclear ribonucleoprotein (hnRNP) A1 is one of the most abundant core proteins of hnRNP complexes in metazoan nuclei. It behaves as a global regulator of alternative pre-mRNA splicing by antagonizing the activities of several serine/arginine-rich splicing factors (SR proteins), resulting in the activation of distal alternative 5' splice sites and skipping of optional exons. Purified hnRNP A1 has nucleic acid annealing activity. The protein also shuttles continuously between the nucleus and the cytoplasm, a process mediated by signals within its C-terminal glycine-rich domain. The N-terminal region of human hnRNP A1, termed unwinding protein 1 (UP1), contains two RNA-recognition motifs (RRMs), RRM1 and RRM2. Understanding the structural elements by which hnRNP A1 interacts with RNA will have broad implications for studies of RNA processing.

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Organizational Affiliation: 

WM Keck Structural Biology Laboratory, Cold Spring Harbor Laboratory, P.O. Box 100, Cold Spring Harbor, New York, 11724, USA. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HETEROGENEOUS NUCLEAR RIBONUCLEOPROTEIN A1	A	182	Homo sapiens	Mutation(s): 0  Gene Names: HNRNPA1, HNRPA1
UniProt & NIH Common Fund Data Resources
Find proteins for P09651 (Homo sapiens) Explore P09651  Go to UniProtKB:  P09651
PHAROS:  P09651

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.254 
• R-Value Work: 0.197 
• R-Value Observed: 0.197 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 37.99	α = 90
b = 43.94	β = 94.2
c = 55.75	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-03-12 
• Released Date: 1997-09-17 
Deposition Author(s): Xu, R.-M., Jokhan, L., Cheng, X., Mayeda, A., Krainer, A.R.

Revision History  

• Version 1.0: 1997-09-17
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance