1I27 | pdb_00001i27

CRYSTAL STRUCTURE OF THE C-TERMINAL DOMAIN OF THE RAP74 SUBUNIT OF HUMAN TRANSCRIPTION FACTOR IIF (TFIIF)

• PDB DOI: https://doi.org/10.2210/pdb1I27/pdb

• Classification: TRANSCRIPTION
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2001-02-07 Released: 2001-03-07 
• Deposition Author(s): Kamada, K., De Angelis, J., Roeder, R.G., Burley, S.K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.02 Å
• R-Value Free: 
  0.146 (Depositor) 
• R-Value Observed: 
  0.126 (Depositor) 

Literature

Crystal structure of the C-terminal domain of the RAP74 subunit of human transcription factor IIF.

Kamada, K., De Angelis, J., Roeder, R.G., Burley, S.K.

(2001) Proc Natl Acad Sci U S A 98: 3115-3120

• PubMed: 11248041 
• DOI: https://doi.org/10.1073/pnas.051631098
• Primary Citation of Related Structures:  
  1I27


• PubMed Abstract: 
  

  The x-ray structure of a C-terminal fragment of the RAP74 subunit of human transcription factor (TF) IIF has been determined at 1.02-A resolution. The alpha/beta structure is strikingly similar to the globular domain of linker histone H5 and the DNA-binding domain of hepatocyte nuclear factor 3gamma (HNF-3gamma), making it a winged-helix protein. The surface electrostatic properties of this compact domain differ significantly from those of bona fide winged-helix transcription factors (HNF-3gamma and RFX1) and from the winged-helix domains found within the RAP30 subunit of TFIIF and the beta subunit of TFIIE. RAP74 has been shown to interact with the TFIIF-associated C-terminal domain phosphatase FCP1, and a putative phosphatase binding site has been identified within the RAP74 winged-helix domain.

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Organizational Affiliation: 
• Laboratories of Molecular Biophysics and Biochemistry and Molecular Biology, and Howard Hughes Medical Institute, The Rockefeller University, 1230 York Avenue, New York, NY 10021, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 8.44 kDa 
• Atom Count: 768 
• Modeled Residue Count: 73 
• Deposited Residue Count: 73 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TRANSCRIPTION FACTOR IIF	A	73	Homo sapiens	Mutation(s): 0  Gene Names: RAP74
UniProt & NIH Common Fund Data Resources
Find proteins for P35269 (Homo sapiens) Explore P35269  Go to UniProtKB:  P35269
GTEx:  ENSG00000125651

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	B [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.02 Å
• R-Value Free:  0.146 (Depositor) 
• R-Value Observed: 0.126 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 29.052	α = 90
b = 43.024	β = 90
c = 48.161	γ = 90

Software Package:

Software Name	Purpose
MLPHARE	phasing
SHELXL-97	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2001-03-07 
Deposition Author(s): Kamada, K., De Angelis, J., Roeder, R.G., Burley, S.K.

Revision History  

• Version 1.0: 2001-03-07
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-02-03
  Changes: Database references, Derived calculations, Structure summary
• Version 1.4: 2024-02-07
  Changes: Data collection, Database references