1HDP

SOLUTION STRUCTURE OF A POU-SPECIFIC HOMEODOMAIN: 3D-NMR STUDIES OF HUMAN B-CELL TRANSCRIPTION FACTOR OCT-2


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Solution structure of a POU-specific homeodomain: 3D-NMR studies of human B-cell transcription factor Oct-2.

Sivaraja, M.Botfield, M.C.Mueller, M.Jancso, A.Weiss, M.A.

(1994) Biochemistry 33: 9845-9855

  • DOI: 10.1021/bi00199a005
  • Primary Citation of Related Structures:  
    1HDP

  • PubMed Abstract: 
  • The POU DNA-binding motif defines a conserved family of eukaryotic transcription factors involved in regulation of gene expression. This bipartite motif consists of an N-terminal POU-specific domain (POUs), a flexible linker, and a C-terminal POU-spe ...

    The POU DNA-binding motif defines a conserved family of eukaryotic transcription factors involved in regulation of gene expression. This bipartite motif consists of an N-terminal POU-specific domain (POUs), a flexible linker, and a C-terminal POU-specific homeodomain (POUHD). Here we describe the solution structure of a POU-specific homeodomain. An NMR model is obtained from Oct-2, a human B-cell specific transcription factor which participates in the regulation of immunoglobulin genes. A fragment of Oct-2 containing POUHD and an adjoining linker was expressed in Escherichia coli and characterized by three-dimensional nuclear magnetic resonance (3D-NMR) spectroscopy. Complete 1H and 15N resonance assignment of the POUHD moiety is presented. The POUHD solution structure, as calculated by distance geometry and simulated annealing (DG/SA), is similar to that of canonical homeodomains. A salient difference between solution and crystal structures is observed in the C-terminal segment of alpha-helix 3 (the HTH recognition helix), which is not well ordered in solution. Because this segment presumably folds upon specific DNA binding, its flexibility in solution may reduce the intrinsic DNA affinity of POUHD in the absence of POUs.


    Organizational Affiliation

    Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
OCT-2 POU HOMEODOMAINA63Homo sapiensMutation(s): 0 
Gene Names: POU2F2OCT2OTF2
Find proteins for P09086 (Homo sapiens)
Explore P09086 
Go to UniProtKB:  P09086
NIH Common Fund Data Resources
PHAROS  P09086
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 
  • OLDERADO: 1HDP Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-01-26
    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: 2017-11-29
    Changes: Derived calculations, Other, Structure summary