Macromolecule Content

• Total Structure Weight: 10.85 kDa 
• Atom Count: 542 
• Modelled Residue Count: 71 
• Deposited Residue Count: 106 
• Unique protein chains: 1

2HH3

Solution structure of the third KH domain of KSRP

• DOI: 10.2210/pdb2HH3/pdb

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


• Deposited: 2006-06-27 Released: 2007-05-08 
• Deposition Author(s): Garcia-Mayoral, M.F.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

The Structure of the C-Terminal KH Domains of KSRP Reveals a Noncanonical Motif Important for mRNA Degradation.

Garcia-Mayoral, M.F., Hollingworth, D., Masino, L., Diaz-Moreno, I., Kelly, G., Gherzi, R., Chou, C.F., Chen, C.Y., Ramos, A.

(2007) Structure 15: 485-498

• PubMed: 17437720 
• DOI: 10.1016/j.str.2007.03.006
• Primary Citation of Related Structures:  
  2HH3, 2HH2


• PubMed Abstract: 
  

The AU-rich element (ARE) RNA-binding protein KSRP (K-homology splicing regulator protein) contains four KH domains and promotes the degradation of specific mRNAs that encode proteins with functions in cellular proliferation and inflammatory response. The fourth KH domain (KH4) is essential for mRNA recognition and decay but requires the third KH domain (KH3) for its function. We show that KH3 and KH4 behave as independent binding modules and can interact with different regions of the AU-rich RNA targets of KSRP. This provides KSRP with the structural flexibility needed to recognize a set of different targets in the context of their 3'UTR structural settings. Surprisingly, we find that KH4 binds to its target AREs with lower affinity than KH3 and that KSRP's mRNA binding, and mRNA degradation activities are closely associated with a conserved structural element of KH4.

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Organizational Affiliation: 

MRC National Institute for Medical Research, The Ridgeway, Mill Hill, London NW7 1AA, UK.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
KH-type splicing regulatory protein	A	106	Homo sapiens	Mutation(s): 0  Gene Names: KHSRP, FUBP2
UniProt & NIH Common Fund Data Resources
Find proteins for Q92945 (Homo sapiens) Explore Q92945  Go to UniProtKB:  Q92945
PHAROS:  Q92945 GTEx:  ENSG00000088247

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 2HH3 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-06-27 
• Released Date: 2007-05-08 
Deposition Author(s): Garcia-Mayoral, M.F.

Revision History  

• Version 1.0: 2007-05-08
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance