6LKP image
Deposition Date 2019-12-19
Release Date 2020-03-25
Last Version Date 2023-11-22
Entry Detail
PDB ID:
6LKP
Keywords:
DNA BINDING PROTEIN
Title:
Crystal structure of Dps1 from the thermophilic non-heterocystous filamentous cyanobacterium Thermoleptolyngbya sp. O-77
Biological Source:
Source Organism:
Leptolyngbya sp. O-77 (Taxon ID: 1080068)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.90 Å
R-Value Free:
0.31
R-Value Work:
0.25
R-Value Observed:
0.25
Space Group:
P 43 2 2
6LKP validation report
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:DNA protection during starvation protein
Chain IDs:A, B, C, D, E, F
Chain Length:184
Number of Molecules:6
Biological Source:Leptolyngbya sp. O-77
Ligand Molecules
FE
ZN
Primary Citation
Biochemical and structural characterization of a thermostable Dps protein with His-type ferroxidase centers and outer metal-binding sites.
Febs Open Bio 10 1219 1229 (2020)
PMID: 32170832 DOI: 10.1002/2211-5463.12837

Abstact

The DNA-binding protein from starved cells (Dps) is found in a wide range of microorganisms, and it has been well characterized. However, little is known about Dps proteins from nonheterocystous filamentous cyanobacteria. In this study, a Dps protein from the thermophilic nonheterocystous filamentous cyanobacterium Thermoleptolyngbya sp. O-77 (TlDps1) was purified and characterized. PAGE and CD analyses of TlDps1 demonstrated that it had higher thermostability than previously reported Dps proteins. X-ray crystallographic analysis revealed that TlDps1 possessed His-type ferroxidase centers within the cavity and unique metal-binding sites located on the surface of the protein, which presumably contributed to its exceedingly high thermostability.

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Primary Citation of related structures
6LKP