SMTL ID : 4nqw.1

Structure of Mycobacterium tuberculosis extracytoplasmic function sigma factor SigK in complex with the cytosolic domain of its cognate anti-sigma factor RskA

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.40 Å

Oligo State

hetero-oligomer

Ligands

10 x CD: CADMIUM ION(Non-covalent)

CD.1: 3 residues within 4Å: Chain A: D.107, C.111 Ligands: CD.2 4 PLIP interactions: 2 interactions with chain A, 2 Ligand-Water interactions Metal complexes: A:D.107, A:C.111, H2O.1, H2O.1 CD.2: 2 residues within 4Å: Chain A: C.111 Ligands: CD.1 1 PLIP interactions: 1 interactions with chain A Metal complexes: A:C.111 CD.3: 3 residues within 4Å: Chain A: E.69 Chain B: H.69 Ligands: CD.8 5 PLIP interactions: 2 interactions with chain A, 1 interactions with chain B, 2 Ligand-Water interactions Metal complexes: A:E.69, A:E.69, B:H.69, H2O.2, H2O.2 CD.4: 2 residues within 4Å: Chain A: E.78 Ligands: CD.7 4 PLIP interactions: 2 interactions with chain A, 2 Ligand-Water interactions Metal complexes: A:E.78, A:E.78, H2O.1, H2O.2 CD.5: 1 residues within 4Å: Chain A: E.45 No protein-ligand interaction detected (PLIP) CD.6: 1 residues within 4Å: Chain A: D.87 2 PLIP interactions: 1 interactions with chain A, 1 Ligand-Water interactions Metal complexes: A:D.87, H2O.2 CD.7: 3 residues within 4Å: Chain A: E.78, R.103 Ligands: CD.4 No protein-ligand interaction detected (PLIP) CD.8: 3 residues within 4Å: Chain A: E.69 Chain B: H.69 Ligands: CD.3 No protein-ligand interaction detected (PLIP) CD.9: 1 residues within 4Å: Chain B: D.76 3 PLIP interactions: 2 interactions with chain B, 1 Ligand-Water interactions Metal complexes: B:D.76, B:D.76, H2O.4 CD.10: 3 residues within 4Å: Chain A: D.107, C.111 Chain B: D.23 2 PLIP interactions: 1 interactions with chain B, 1 interactions with chain A Metal complexes: B:D.23, A:D.107

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Shukla, J. et al., Structural basis for the redox sensitivity of the Mycobacterium tuberculosis SigK-RskA sigma-anti-sigma complex. Acta Crystallogr.,Sect.D (2014)

Release Date

2014-01-22

Peptides

ECF RNA polymerase sigma factor SigK: A
Anti-sigma-K factor RskA: B

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

ECF RNA polymerase sigma factor SigK

Anti-sigma-K factor RskA