1HA1 | pdb_00001ha1

HNRNP A1 (RBD1,2) FROM HOMO SAPIENS

• PDB DOI: https://doi.org/10.2210/pdb1HA1/pdb

• Classification: NUCLEAR PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1996-10-30 Released: 1997-05-15 
• Deposition Author(s): Shamoo, Y., Krueger, U., Rice, L., Williams, K.R., Steitz, T.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free: 
  0.275 (Depositor) 
• R-Value Work: 
  0.198 (Depositor) 
• R-Value Observed: 
  0.198 (Depositor) 

Literature

Crystal structure of the two RNA binding domains of human hnRNP A1 at 1.75 A resolution.

Shamoo, Y., Krueger, U., Rice, L.M., Williams, K.R., Steitz, T.A.

(1997) Nat Struct Biol 4: 215-222

• PubMed: 9164463 
• DOI: https://doi.org/10.1038/nsb0397-215
• Primary Citation Related Structures: 
  1HA1


• PubMed Abstract: 
  

  Heterogeneous ribonucleoprotein A1 (hnRNP A1) is an abundant eukaryotic nuclear RNA binding protein. A1 is involved in the packaging of pre-mRNA into hnRNP particles, transport of poly A+ mRNA from the nucleus to the cytoplasm and may modulate splice site selection. The crystal structure of A1(RBD1,2) reveals two independently-folded RNA binding domains (RBDs) connected by a flexible linker. Both RBDs are structurally homologous to the U1A(RBD1), and have their RNA binding platforms oriented in an anti-parallel fashion. The anti-parallel arrangement of the A1 RNA binding platforms suggests mechanisms for RNA condensation and ways of bringing together distant RNA sequences for RNA metabolism such as splicing or transport.

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Organizational Affiliation: 
• Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06520-8114, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 21.05 kDa 
• Atom Count: 1,508 
• Modeled Residue Count: 167 
• Deposited Residue Count: 184 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HNRNP A1	A	184	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P09651 (Homo sapiens) Explore P09651  Go to UniProtKB:  P09651
PHAROS:  P09651 GTEx:  ENSG00000135486

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free:  0.275 (Depositor) 
• R-Value Work:  0.198 (Depositor) 
• R-Value Observed: 0.198 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 37.6	α = 90
b = 43.5	β = 94.7
c = 55.5	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

• Released Date: 1997-05-15 
Deposition Author(s): Shamoo, Y., Krueger, U., Rice, L., Williams, K.R., Steitz, T.A.

Revision History  

• Version 1.0: 1997-05-15
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-07
  Changes: Data collection, Database references, Other