13CT image
Deposition Date 2026-04-30
Release Date 2026-07-15
Last Version Date 2026-07-15
Entry Detail
PDB ID:
13CT
Keywords:
TRANSCRIPTION
Title:
Crystal structure of Sulfide-responsive transcriptional repressor (SqrR) from Rhodobacter capsulatus bound to DNA
Biological Source:
Source Organism(s):
Rhodobacter capsulatus (Taxon ID: 1061)
Expression System(s):
Escherichia coli bl21(de3)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.91 Å
R-Value Free:
0.20
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
P 43 21 2
13CT validation report missing
Macromolecular Entities
Structures with similar UniProt ID
Structural Superimposition Protein Blast
Polymer Type:polypeptide(L)
Molecule:Transcriptional regulator, Ar
Gene (Uniprot):RCAP_rcc01453
Chain IDs:A
Chain Length:111
Number of Molecules:1
Biological Source:Rhodobacter capsulatus
UniProt ID:D5AT91 Pfam ID:PF01022
Polymer Type:polydeoxyribonucleotide
Molecule:rcc1451NMR
Chain IDs:B
Chain Length:22
Number of Molecules:1
Biological Source:Rhodobacter capsulatus
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
CSD A CYS modified residue
MSE A MET modified residue
Ligand Molecules
CL
Primary Citation
Evolution of allostery without shape shifting: Internal dynamics drives functional diversification of a transcriptional repressor superfamily.
Biorxiv ? ? ? (2026)
PMID: 42182359 DOI: 10.64898/2026.05.15.721447
Primary Citation of related structures
13CT
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