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(-) Description

Title :  LACTOSE OPERON REPRESSOR BOUND TO 21-BASE PAIR SYMMETRIC OPERATOR DNA, ALPHA CARBONS ONLY
 
Authors :  M. Lewis, G. Chang, N. C. Horton, M. A. Kercher, H. C. Pace, P. Lu
Date :  03 Jan 96  (Deposition) - 17 Feb 96  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  4.80
Chains :  Asym. Unit :  A,B,C,D,E,F,G,H
Biol. Unit 1:  A,B,E,F  (1x)
Biol. Unit 2:  C,D,G,H  (1x)
Keywords :  Transcription Regulation, Dna-Binding, Repressor, Transcription/Dna Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  M. Lewis, G. Chang, N. C. Horton, M. A. Kercher, H. C. Pace, M. A. Schumacher, R. G. Brennan, P. Lu
Crystal Structure Of The Lactose Operon Repressor And Its Complexes With Dna And Inducer.
Science V. 271 1247 1996
PubMed-ID: 8638105
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - DNA (5'- D(*GP*AP*AP*TP*TP*GP*TP*GP*AP*GP*CP*GP*CP*TP*CP*AP*CP*AP*AP *TP*T)-3')
    Chains: E, F, G, H
    Engineered: YES
    Synthetic: YES
 
Molecule 2 - PROTEIN (LACTOSE OPERON REPRESSOR)
    Chains: A, B, C, D
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Gene: LACI
    Expression System Plasmid: PIQ
    Expression System Taxid: 562
    Gene: LACI
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 562
    Strain: GM1

 Structural Features

(-) Chains, Units

  12345678
Asymmetric Unit : ABCDEFGH
Biological Unit 1 (1x): AB  EF  
Biological Unit 2 (1x):   CD  GH

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 1LBG)

(-) Sites  (0, 0)

(no "Site" information available for 1LBG)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1LBG)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1LBG)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (1, 4)

Asymmetric Unit (1, 4)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_LACI_ECOLI_001 *Y282DLACI_ECOLI  ---  ---A/B/C/DY282D
   * ID not provided by source
  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 1 (1, 2)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_LACI_ECOLI_001 *Y282DLACI_ECOLI  ---  ---A/BY282D
   * ID not provided by source
  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 2 (1, 2)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_LACI_ECOLI_001 *Y282DLACI_ECOLI  ---  ---C/DY282D
   * ID not provided by source
  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (2, 8)

Asymmetric Unit (2, 8)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1HTH_LACI_2PS50932 LacI-type HTH domain profile.LACI_ECOLI4-58
 
 
 		  4A:4-58
B:4-58
C:4-58
D:4-58
2HTH_LACI_1PS00356 LacI-type HTH domain signature.LACI_ECOLI6-24
 
 
 		  4A:6-24
B:6-24
C:6-24
D:6-24
Biological Unit 1 (2, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1HTH_LACI_2PS50932 LacI-type HTH domain profile.LACI_ECOLI4-58
 
 
 		  2A:4-58
B:4-58
-
-
2HTH_LACI_1PS00356 LacI-type HTH domain signature.LACI_ECOLI6-24
 
 
 		  2A:6-24
B:6-24
-
-
Biological Unit 2 (2, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1HTH_LACI_2PS50932 LacI-type HTH domain profile.LACI_ECOLI4-58
 
 
 		  2-
-
C:4-58
D:4-58
2HTH_LACI_1PS00356 LacI-type HTH domain signature.LACI_ECOLI6-24
 
 
 		  2-
-
C:6-24
D:6-24

(-) Exons   (0, 0)

(no "Exon" information available for 1LBG)

(-) Sequences/Alignments

Asymmetric Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it) 
Chain A from PDB  Type:PROTEIN  Length:357
 aligned with LACI_ECOLI | P03023 from UniProtKB/Swiss-Prot  Length:360

    Alignment length:357
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       
           LACI_ECOLI     1 MKPVTLYDVAEYAGVSYQTVSRVVNQASHVSAKTREKVEAAMAELNYIPNRVAQQLAGKQSLLIGVATSSLALHAPSQIVAAIKSRADQLGASVVVSMVERSGVEACKAAVHNLLAQRVSGLIINYPLDDQDAIAVEAACTNVPALFLDVSDQTPINSIIFSHEDGTRLGVEHLVALGHQQIALLAGPLSSVSARLRLAGWHKYLTRNQIQPIAEREGDWSAMSGFQQTMQMLNEGIVPTAMLVANDQMALGAMRAITESGLRVGADISVVGYDDTEDSSCYIPPLTTIKQDFRLLGQTSVDRLLQLSQGQAVKGNQLLPVSLVKRKTTLAPNTQTASPRALADSLMQLARQVSRLE 357
               SCOP domains d1lbga1 A:1-60 Lac repressor (LacR), N-terminal domain      d1lbga2 A:61-357 Lac-repressor (lacR) core (C-terminal domain)                                                                                                                                                                                                                                            SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .....hhhhhhh....hhhhhhhhh......hhhhhhhhhhhhhh....hhhhhhhhh....eeeeee.....hhhhhhhhhhhhhhhhh.eeeeeee.....hhhhhhhhhhhhh....eeee......hhhhhhh.......eeeee........eeee..hhhhhhhhhhhh......eeee......hhhhhhhhhhhhhh........eeee....hhhhhhhhhhhh......eeeee..hhhhhhhhhhhhh.........eeeeee....hhh.....eeee..hhhhhhhhhhhhhhhhh......eee...eee...............hhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------D--------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ---HTH_LACI_2  PDB: A:4-58 UniProt: 4-58                  ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (1)
                PROSITE (2) -----HTH_LACI_1         --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1lbg A   1 MKPVTLYDVAEYAGVSYQTVSRVVNQASHVSAKTREKVEAAMAELNYIPNRVAQQLAGKQSLLIGVATSSLALHAPSQIVAAIKSRADQLGASVVVSMVERSGVEACKTAVHNLLAQRVSGLIINYPLDDQDAIAVEAACTNVPALFLDVSDQTPINSIIFSHEDGTRLGVEHLVALGHQQIALLAGPLSSVSARLRLAGWHKYLTRNQIQPIAEREGDWSAMSGFQQTMQMLNEGIVPTAMLVANDQMALGAMRAITESGLRVGADISVVGYDDTEDSSCYIPPLTTIKQDFRLLGQTSVDRLLQLSQGQAVKGNQLLPVSLVKRKTTLAPNTQTASPRALADSLMQLARQVSRLE 357
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       


Chain B from PDB  Type:PROTEIN  Length:357
 aligned with LACI_ECOLI | P03023 from UniProtKB/Swiss-Prot  Length:360

    Alignment length:357
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       
           LACI_ECOLI     1 MKPVTLYDVAEYAGVSYQTVSRVVNQASHVSAKTREKVEAAMAELNYIPNRVAQQLAGKQSLLIGVATSSLALHAPSQIVAAIKSRADQLGASVVVSMVERSGVEACKAAVHNLLAQRVSGLIINYPLDDQDAIAVEAACTNVPALFLDVSDQTPINSIIFSHEDGTRLGVEHLVALGHQQIALLAGPLSSVSARLRLAGWHKYLTRNQIQPIAEREGDWSAMSGFQQTMQMLNEGIVPTAMLVANDQMALGAMRAITESGLRVGADISVVGYDDTEDSSCYIPPLTTIKQDFRLLGQTSVDRLLQLSQGQAVKGNQLLPVSLVKRKTTLAPNTQTASPRALADSLMQLARQVSRLE 357
               SCOP domains d1lbgb1 B:1-60 Lac repressor (LacR), N-terminal domain      d1lbgb2 B:61-357 Lac-repressor (lacR) core (C-terminal domain)                                                                                                                                                                                                                                            SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .....hhhhhhh....hhhhhhhhh......hhhhhhhhhhhhhh....hhhhhhhhh....eeeeee.....hhhhhhhhhhhhhhhhh.eeeeeee.....hhhhhhhhhhhhh....eeee......hhhhhhh.......eeeee........eeee..hhhhhhhhhhhh......eeee......hhhhhhhhhhhhhh........eeee....hhhhhhhhhhhh......eeeee..hhhhhhhhhhhhh.........eeeeee....hhh.....eeee..hhhhhhhhhhhhhhhhh......eee...eee...............hhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------D--------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ---HTH_LACI_2  PDB: B:4-58 UniProt: 4-58                  ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (1)
                PROSITE (2) -----HTH_LACI_1         --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1lbg B   1 MKPVTLYDVAEYAGVSYQTVSRVVNQASHVSAKTREKVEAAMAELNYIPNRVAQQLAGKQSLLIGVATSSLALHAPSQIVAAIKSRADQLGASVVVSMVERSGVEACKTAVHNLLAQRVSGLIINYPLDDQDAIAVEAACTNVPALFLDVSDQTPINSIIFSHEDGTRLGVEHLVALGHQQIALLAGPLSSVSARLRLAGWHKYLTRNQIQPIAEREGDWSAMSGFQQTMQMLNEGIVPTAMLVANDQMALGAMRAITESGLRVGADISVVGYDDTEDSSCYIPPLTTIKQDFRLLGQTSVDRLLQLSQGQAVKGNQLLPVSLVKRKTTLAPNTQTASPRALADSLMQLARQVSRLE 357
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       


Chain C from PDB  Type:PROTEIN  Length:357
 aligned with LACI_ECOLI | P03023 from UniProtKB/Swiss-Prot  Length:360

    Alignment length:357
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       
           LACI_ECOLI     1 MKPVTLYDVAEYAGVSYQTVSRVVNQASHVSAKTREKVEAAMAELNYIPNRVAQQLAGKQSLLIGVATSSLALHAPSQIVAAIKSRADQLGASVVVSMVERSGVEACKAAVHNLLAQRVSGLIINYPLDDQDAIAVEAACTNVPALFLDVSDQTPINSIIFSHEDGTRLGVEHLVALGHQQIALLAGPLSSVSARLRLAGWHKYLTRNQIQPIAEREGDWSAMSGFQQTMQMLNEGIVPTAMLVANDQMALGAMRAITESGLRVGADISVVGYDDTEDSSCYIPPLTTIKQDFRLLGQTSVDRLLQLSQGQAVKGNQLLPVSLVKRKTTLAPNTQTASPRALADSLMQLARQVSRLE 357
               SCOP domains d1lbgc1 C:1-60 Lac repressor (LacR), N-terminal domain      d1lbgc2 C:61-357 Lac-repressor (lacR) core (C-terminal domain)                                                                                                                                                                                                                                            SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .....hhhhhhh....hhhhhhhhh......hhhhhhhhhhhhhh....hhhhhhhhh....eeeeee.....hhhhhhhhhhhhhhhhh.eeeeeee.....hhhhhhhhhhhhh....eeee......hhhhhhh.......eeeee........eeee..hhhhhhhhhhhh......eeee......hhhhhhhhhhhhhh........eeee....hhhhhhhhhhhh......eeeee..hhhhhhhhhhhhh.........eeeeee....hhh.....eeee..hhhhhhhhhhhhhhhhh......eee...eee...............hhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------D--------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ---HTH_LACI_2  PDB: C:4-58 UniProt: 4-58                  ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (1)
                PROSITE (2) -----HTH_LACI_1         --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1lbg C   1 MKPVTLYDVAEYAGVSYQTVSRVVNQASHVSAKTREKVEAAMAELNYIPNRVAQQLAGKQSLLIGVATSSLALHAPSQIVAAIKSRADQLGASVVVSMVERSGVEACKTAVHNLLAQRVSGLIINYPLDDQDAIAVEAACTNVPALFLDVSDQTPINSIIFSHEDGTRLGVEHLVALGHQQIALLAGPLSSVSARLRLAGWHKYLTRNQIQPIAEREGDWSAMSGFQQTMQMLNEGIVPTAMLVANDQMALGAMRAITESGLRVGADISVVGYDDTEDSSCYIPPLTTIKQDFRLLGQTSVDRLLQLSQGQAVKGNQLLPVSLVKRKTTLAPNTQTASPRALADSLMQLARQVSRLE 357
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       


Chain D from PDB  Type:PROTEIN  Length:357
 aligned with LACI_ECOLI | P03023 from UniProtKB/Swiss-Prot  Length:360

    Alignment length:357
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       
           LACI_ECOLI     1 MKPVTLYDVAEYAGVSYQTVSRVVNQASHVSAKTREKVEAAMAELNYIPNRVAQQLAGKQSLLIGVATSSLALHAPSQIVAAIKSRADQLGASVVVSMVERSGVEACKAAVHNLLAQRVSGLIINYPLDDQDAIAVEAACTNVPALFLDVSDQTPINSIIFSHEDGTRLGVEHLVALGHQQIALLAGPLSSVSARLRLAGWHKYLTRNQIQPIAEREGDWSAMSGFQQTMQMLNEGIVPTAMLVANDQMALGAMRAITESGLRVGADISVVGYDDTEDSSCYIPPLTTIKQDFRLLGQTSVDRLLQLSQGQAVKGNQLLPVSLVKRKTTLAPNTQTASPRALADSLMQLARQVSRLE 357
               SCOP domains d1lbgd1 D:1-60 Lac repressor (LacR), N-terminal domain      d1lbgd2 D:61-357 Lac-repressor (lacR) core (C-terminal domain)                                                                                                                                                                                                                                            SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .....hhhhhhh....hhhhhhhhh......hhhhhhhhhhhhhh....hhhhhhhhh....eeeeee.....hhhhhhhhhhhhhhhhh.eeeeeee.....hhhhhhhhhhhhh....eeee......hhhhhhh.......eeeee........eeee..hhhhhhhhhhhh......eeee......hhhhhhhhhhhhhh........eeee....hhhhhhhhhhhh......eeeee..hhhhhhhhhhhhh.........eeeeee....hhh.....eeee..hhhhhhhhhhhhhhhhh......eee...eee...............hhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------D--------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ---HTH_LACI_2  PDB: D:4-58 UniProt: 4-58                  ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (1)
                PROSITE (2) -----HTH_LACI_1         --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1lbg D   1 MKPVTLYDVAEYAGVSYQTVSRVVNQASHVSAKTREKVEAAMAELNYIPNRVAQQLAGKQSLLIGVATSSLALHAPSQIVAAIKSRADQLGASVVVSMVERSGVEACKTAVHNLLAQRVSGLIINYPLDDQDAIAVEAACTNVPALFLDVSDQTPINSIIFSHEDGTRLGVEHLVALGHQQIALLAGPLSSVSARLRLAGWHKYLTRNQIQPIAEREGDWSAMSGFQQTMQMLNEGIVPTAMLVANDQMALGAMRAITESGLRVGADISVVGYDDTEDSSCYIPPLTTIKQDFRLLGQTSVDRLLQLSQGQAVKGNQLLPVSLVKRKTTLAPNTQTASPRALADSLMQLARQVSRLE 357
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       


Chain E from PDB  Type:DNA  Length:21
                                                     
                 1lbg E 400 GAATTGTGAGCGCTCACAATT 420
                                   409       419 


Chain F from PDB  Type:DNA  Length:21
                                                     
                 1lbg F 500 GAATTGTGAGCGCTCACAATT 520
                                   509       519 


Chain G from PDB  Type:DNA  Length:21
                                                     
                 1lbg G 600 GAATTGTGAGCGCTCACAATT 620
                                   609       619 


Chain H from PDB  Type:DNA  Length:21
                                                     
                 1lbg H 700 GAATTGTGAGCGCTCACAATT 720
                                   709       719
   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (2, 8)

Asymmetric Unit
(-)
Class: All alpha proteins (14657)
(-)
Class: Alpha and beta proteins (a/b) (23833)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 1LBG)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1LBG)

(-) Gene Ontology  (8, 8)

Asymmetric Unit(hide GO term definitions)
Chain A,B,C,D   (LACI_ECOLI | P03023)
molecular function
    GO:0003677    DNA binding    Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
    GO:0000986    bacterial-type RNA polymerase core promoter proximal region sequence-specific DNA binding    Interacting selectively and non-covalently with a sequence of DNA that is in cis with and relatively close to a core promoter for a bacterial-type RNA polymerase.
    GO:0003700    transcription factor activity, sequence-specific DNA binding    Interacting selectively and non-covalently with a specific DNA sequence in order to modulate transcription. The transcription factor may or may not also interact selectively with a protein or macromolecular complex.
    GO:0001141    transcriptional repressor activity, bacterial-type RNA polymerase core promoter proximal region sequence-specific binding    Interacting selectively and non-covalently with a sequence of DNA that is in cis with and relatively close to a core promoter for a bacterial-type RNA polymerase in order to stop, prevent, or reduce the frequency, rate or extent of transcription from a bacterial-type RNA polymerase promoter.
biological process
    GO:0045892    negative regulation of transcription, DNA-templated    Any process that stops, prevents, or reduces the frequency, rate or extent of cellular DNA-templated transcription.
    GO:0006355    regulation of transcription, DNA-templated    Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
    GO:0006351    transcription, DNA-templated    The cellular synthesis of RNA on a template of DNA.
cellular component
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

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  1lbg
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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        LACI_ECOLI | P03023: 1cjg 1efa 1jwl 1jye 1jyf 1l1m 1lbh 1lbi 1lcc 1lcd 1lqc 1ltp 1osl 1tlf 1z04 2bjc 2kei 2kej 2kek 2p9h 2paf 2pe5 3edc 4rzs 4rzt

(-) Related Entries Specified in the PDB File

(no "Related Entries Specified in the PDB File" available for 1LBG)