› 3q7u

X-ray diffraction
2.1Å resolution

Structure of Mtb 2-C-methyl-D-erythritol 4-phosphate cytidyltransferase (IspD) complexed with CTP

Released:
DOI: 10.2210/pdb3q7u/pdb
PDB entry 3q7u coloured by chain, front view.
PDB entry 3q7u coloured by chain, side view.
PDB entry 3q7u coloured by chain, top view.
Source organism: Mycobacterium tuberculosis H37Rv
Primary publication:
Crystal Structure of Mycobacterium tuberculosis 2-C-methyl-D-erythritol 4-phosphate cytidyltransferase (IspD): a candidate antitubercular drug target
Reddy MCM, Bruning JB, Thurman C, Ioerger TR, Sacchettini JC
Proteins (2011)

Function and Biology Details

Reaction catalysed: 
CTP + 2-C-methyl-D-erythritol 4-phosphate = diphosphate + 4-(cytidine 5'-diphospho)-2-C-methyl-D-erythritol
Biochemical function:
Biological process:
Cellular component:
Sequence domains:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-161741 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase Chains: A, B
Molecule details ›
Chains: A, B
Length: 231 amino acids
Theoretical weight: 24.06 KDa
Source organism: Mycobacterium tuberculosis H37Rv
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P9WKG9 (Residues: 1-231; Coverage: 100%)
Gene names: MTCY06G11.29c, Rv3582c, ispD
Sequence domains: 2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase
Structure domains: Spore Coat Polysaccharide Biosynthesis Protein SpsA; Chain A

Ligands and Environments

2 bound ligands:
Ligand MG 2 x MG
Ligand CTP 2 x CTP
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 23-ID-B
Spacegroup: P212121
Unit cell:
a: 55.214Å b: 76.756Å c: 131.538Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.191 0.188 0.236
Expression system: Escherichia coli BL21(DE3)

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