2KLD | pdb_00002kld

Solution Structure of the Calcium Binding Domain of the C-terminal Cytosolic Domain of Polycystin-2

• PDB DOI: https://doi.org/10.2210/pdb2KLD/pdb

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


• Deposited: 2009-07-01 Released: 2009-07-28 
• Deposition Author(s): Kalbitzer, H.R.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 1000 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 

Literature

NMR-assignments of a cytosolic domain of the C-terminus of polycystin-2

Schumann, F.H., Hoffmeister, H., Schmidt, M., Bader, R., Besl, E., Witzgall, R., Kalbitzer, H.R.

(2009) Biomol NMR Assign 3: 141-144

• PubMed: 19636966 
• DOI: https://doi.org/10.1007/s12104-009-9160-x
• Primary Citation Related Structures: 
  2KLD, 2KLE


• PubMed Abstract: 
  

  Mutations in the PKD2 gene lead to the development of polycystic kidney disease (PKD). The PKD2 gene codes for polycystin-2, a cation channel with unknown function. The cytoplasmic, C-terminal domain interacts with a large number of proteins including mDia1, alpha-actinin, PIGEA-14, troponin, and tropomyosin. The C-terminal fragment polycystin-2 (680-796) consisting of 117 amino acids contains a putative calcium binding EF-hand. It was produced in Escherichia coli and enriched uniformly with (13)C and (15)N. The backbone and side chain resonances were assigned by multidimensional NMR methods, the obtained chemical shifts are typical for a partially folded protein. The chemical shifts obtained are in line with the existence of two paired helix-loop-helix (HLH) motifs.

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Organizational Affiliation: 
• Institute of Biophysics and Physical Biochemistry, University of Regensburg, 93040, Regensburg, Germany.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 14.02 kDa 
• Atom Count: 593 
• Modeled Residue Count: 73 
• Deposited Residue Count: 123 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Polycystin-2	A	123	Homo sapiens	Mutation(s): 0  Gene Names: PKD2
UniProt & NIH Common Fund Data Resources
Find proteins for Q13563 (Homo sapiens) Explore Q13563  Go to UniProtKB:  Q13563
PHAROS:  Q13563 GTEx:  ENSG00000118762

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 1000 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-07-28 
Deposition Author(s): Kalbitzer, H.R.

Revision History  

• Version 1.0: 2009-07-28
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2022-03-16
  Changes: Data collection, Database references, Derived calculations
• Version 1.3: 2024-05-29
  Changes: Data collection