2KVK

Solution structure of ADF/cofilin (LDCOF) from Leishmania donovani

• PDB DOI: https://doi.org/10.2210/pdb2KVK/pdb
• Entry: 2KVK supersedes: 2KD5

• Classification: HORMONE
• Organism(s): Leishmania donovani
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2010-03-16 Released: 2010-07-28 
• Deposition Author(s): Pathak, P.P., Pulavarti, S.V., Jain, A., Sahasrabuddhe, A.A., Gupta, C.M., Arora, A.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 10 
• Selection Criteria: target function 

Literature

Solution structure and dynamics of ADF/cofilin from Leishmania donovani

Pathak, P.P., Pulavarti, S.V.S.R., Jain, A., Sahasrabuddhe, A.A., Gupta, C.M., Arora, A.

(2010) J Struct Biol 172: 219-224

• PubMed: 20627129 
• DOI: https://doi.org/10.1016/j.jsb.2010.07.001
• Primary Citation of Related Structures:  
  2KVK


• PubMed Abstract: 
  

  Leishmania donovani ADF/cofilin (LdCof) is a novel member of ADF/cofilin family. LdCof depolymerizes, but does not co-sediment with, rabbit muscle actin filaments. Its F-actin depolymerizing activity is pH independent. Further, it possesses weak F-actin severing activity. In order to better understand its characteristic properties, we have determined the solution NMR structure of LdCof and have analyzed protein backbone dynamics from (15)N-relaxation measurements. The structure of LdCof possesses a conserved ADF/cofilin fold with a central mixed β-sheet consisting of six β-strands which is surrounded by five α-helices. LdCof structure has conserved G/F-actin binding site which includes the characteristic long kinked α-helix (α3). LdCof binds to rabbit muscle ADP-G-actin with 1:1 stoichiometry (K(d)∼0.2μM). The F-actin binding site is not well formed and analysis of (15)N-relaxation data shows that residues in the β4-β5 loop region and C-terminal are relatively flexible, which seems to be a determinant for the low F-actin severing activity of LdCof.

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Organizational Affiliation: 

Molecular and Structural Biology Division, Central Drug Research Institute, Lucknow - 226 001, India.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 16.25 kDa 
• Atom Count: 1,134 
• Modelled Residue Count: 144 
• Deposited Residue Count: 144 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Actin severing and dynamics regulatory protein	A	144	Leishmania donovani	Mutation(s): 0  Gene Names: Cofilin
UniProt
Find proteins for Q2QKR1 (Leishmania donovani) Explore Q2QKR1  Go to UniProtKB:  Q2QKR1

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 10 
• Selection Criteria: target function 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-07-28 
Deposition Author(s): Pathak, P.P., Pulavarti, S.V., Jain, A., Sahasrabuddhe, A.A., Gupta, C.M., Arora, A.
• This entry supersedes: 2KD5

Revision History  

• Version 1.0: 2010-07-28
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance