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4NQW

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

Replaces:  3VDO
Functional Information from GO Data
ChainGOidnamespacecontents
A0003677molecular_functionDNA binding
A0003700molecular_functionDNA-binding transcription factor activity
A0005515molecular_functionprotein binding
A0005886cellular_componentplasma membrane
A0006352biological_processDNA-templated transcription initiation
A0006355biological_processregulation of DNA-templated transcription
A0009274cellular_componentpeptidoglycan-based cell wall
A0016987molecular_functionsigma factor activity
A2000142biological_processregulation of DNA-templated transcription initiation
Functional Information from PDB Data
site_idAC1
Number of Residues5
DetailsBINDING SITE FOR RESIDUE CD A 201
ChainResidue
AASP90
ACYS94
AHOH305
AHOH313
BASP28

site_idAC2
Number of Residues4
DetailsBINDING SITE FOR RESIDUE CD A 202
ChainResidue
ACYS94
BASP24
BASP28
BHOH210

site_idAC3
Number of Residues5
DetailsBINDING SITE FOR RESIDUE CD A 203
ChainResidue
AGLU52
ACD208
AHOH331
AHOH348
BHIS69

site_idAC4
Number of Residues4
DetailsBINDING SITE FOR RESIDUE CD A 204
ChainResidue
AGLU61
ACD207
AHOH309
AHOH328

site_idAC5
Number of Residues1
DetailsBINDING SITE FOR RESIDUE CD A 205
ChainResidue
AGLU28

site_idAC6
Number of Residues3
DetailsBINDING SITE FOR RESIDUE CD A 206
ChainResidue
AASP70
AGLU132
AHOH332

site_idAC7
Number of Residues3
DetailsBINDING SITE FOR RESIDUE CD A 207
ChainResidue
AARG86
ACD204
BARG31

site_idAC8
Number of Residues2
DetailsBINDING SITE FOR RESIDUE CD A 208
ChainResidue
AGLU52
ACD203

site_idAC9
Number of Residues4
DetailsBINDING SITE FOR RESIDUE CD B 101
ChainResidue
BGLU8
BGLU11
BASP76
BHOH212

site_idBC1
Number of Residues3
DetailsBINDING SITE FOR RESIDUE CD B 102
ChainResidue
AASP90
BASP23
BHOH205

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues1
DetailsMOD_RES: N-acetylthreonine => ECO:0007744|PubMed:21969609
ChainResidueDetails
BTHR2

237423

PDB entries from 2025-06-11

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