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1R22

Crystal structure of the cyanobacterial metallothionein repressor SmtB (C14S/C61S/C121S mutant) in the Zn2alpha5-form

Functional Information from GO Data
ChainGOidnamespacecontents
A0003677molecular_functionDNA binding
A0003700molecular_functionDNA-binding transcription factor activity
A0006351biological_processDNA-templated transcription
A0006355biological_processregulation of DNA-templated transcription
A0046872molecular_functionmetal ion binding
B0003677molecular_functionDNA binding
B0003700molecular_functionDNA-binding transcription factor activity
B0006351biological_processDNA-templated transcription
B0006355biological_processregulation of DNA-templated transcription
B0046872molecular_functionmetal ion binding
Functional Information from PDB Data
site_idAC1
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ZN B 501
ChainResidue
AASP104
AHIS106
BHIS117
BGLU120

site_idAC2
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ZN A 502
ChainResidue
AHIS117
AGLU120
BASP104
BHIS106

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues38
DetailsDNA binding: {"description":"H-T-H motif","evidences":[{"source":"PROSITE-ProRule","id":"PRU00340","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues8
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues94
DetailsDomain: {"description":"HTH arsR-type","evidences":[{"source":"PROSITE-ProRule","id":"PRU00340","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

247536

PDB entries from 2026-01-14

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