3ECH - JenaLib

Asym./Biol. Unit (Jmol Viewer)

Title :   THE MARR-FAMILY REPRESSOR MEXR IN COMPLEX WITH ITS ANTIREPRESSOR ARMR

Authors :   M. S. Wilke, N. C. J. Strynadka

Date :   30 Aug 08 (Deposition) - 21 Oct 08 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.80

Chains :   Asym./Biol. Unit : A,B,C

Keywords :   Winged Helix, Helix-Turn-Helix, Protein-Peptide Complex, Dna-Binding, Repressor, Transcription, Transcription Regulation (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   M. S. Wilke, M. Heller, A. L. Creagh, C. A. Haynes, L. P. Mcintosh, K. Poole, N. C. J. Strynadka
The Crystal Structure Of Mexr From Pseudomonas Aeruginosa I Complex With Its Antirepressor Armr
Proc. Natl. Acad. Sci. Usa V. 105 14832 2008
PubMed-ID: 18812515 | Reference-DOI: 10.1073/PNAS.0805489105

Molecule 1 - MULTIDRUG RESISTANCE OPERON REPRESSOR
	Chains	:	A, B
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PET41A
	Expression System Strain	:	BL21 (DE3)
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Fragment	:	RESIDUES 1-142
	Gene	:	MEXR, PA0424
	Mutation	:	YES
	Organism Scientific	:	PSEUDOMONAS AERUGINOSA
	Organism Taxid	:	287
	Synonym	:	MEXR

Molecule 2 - 25-MER FRAGMENT OF PROTEIN ARMR
	Chains	:	C
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PTYB12
	Expression System Strain	:	BL21 (DE3)
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Fragment	:	RESIDUES 29-53
	Gene	:	PA3719
	Organism Scientific	:	PSEUDOMONAS AERUGINOSA
	Organism Taxid	:	287

		1	2	3
Asymmetric/Biological Unit	:	A	B	C

Summary Information (see also Sequences/Alignments below)

(no "Ligand,Modified Residues,Ions" information available for 3ECH)

(no "Site" information available for 3ECH)

(no "SS Bond" information available for 3ECH)

(no "Cis Peptide Bond" information available for 3ECH)

Asymmetric/Biological Unit (5, 10)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_MEXR_PSEAE_001 *	T	69	A	MEXR_PSEAE	---	---	A/B	T	69	A
2	UniProt	VAR_MEXR_PSEAE_002 *	R	70	W	MEXR_PSEAE	---	---	A/B	R	70	W
3	UniProt	VAR_MEXR_PSEAE_003 *	L	95	F	MEXR_PSEAE	---	---	A/B	L	95	F
4	UniProt	VAR_MEXR_PSEAE_004 *	V	126	E	MEXR_PSEAE	---	---	A/B	V	126	E
5	UniProt	VAR_MEXR_PSEAE_005 *	T	130	S	MEXR_PSEAE	---	---	A/B	T	130	S
	* ID not provided by source

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Asymmetric/Biological Unit (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	HTH_MARR_2	PS50995	MarR-type HTH domain profile.	MEXR_PSEAE	6-140	2	A:6-140 B:6-140

(no "Exon" information available for 3ECH)

Asymmetric/Biological 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
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Chain A from PDB  Type:PROTEIN  Length:129
 aligned with MEXR_PSEAE | P52003 from UniProtKB/Swiss-Prot  Length:147

    Alignment length:142
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140  
           MEXR_PSEAE     1 MNYPVNPDLMPALMAVFQHVRTRIQSELDCQRLDLTPPDVHVLKLIDEQRGLNLQDLGRQMCRDKALITRKIRELEGRNLVRRERNPSDQRSFQLFLTDEGLAIHQHAEAIMSRVHDELFAPLTPVEQATLVHLLDQCLAAQ 142
               SCOP domains d3echa_ A: MexR repressor                                                                                                                      SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .......hhhhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhh...hhhhhhhhhh---hhhhhhhhhhhhh..ee.----------..eehhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------AW------------------------F------------------------------E---S------------ SAPs(SNPs)
                    PROSITE -----HTH_MARR_2  PDB: A:6-140 UniProt: 6-140                                                                                                -- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3ech A   1 MNYPVNPDLMPALMAVFQHVRTRIQSELDCQRLDLTPPDVHVLKLIDEQRGLNLQDLGRQMC---ALITRKIRELEGRNLVRR----------QLFLTDEGLAIHLHAELIMSRVHDELFAPLTPVEQATLVHLLDQCLAAQ 142
                                    10        20        30        40        50        60 |   |  70        80  |      -   |   100       110       120       130       140  
                                                                                        62  66               83         94

Chain B from PDB  Type:PROTEIN  Length:135
 aligned with MEXR_PSEAE | P52003 from UniProtKB/Swiss-Prot  Length:147

    Alignment length:141
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140 
           MEXR_PSEAE     1 MNYPVNPDLMPALMAVFQHVRTRIQSELDCQRLDLTPPDVHVLKLIDEQRGLNLQDLGRQMCRDKALITRKIRELEGRNLVRRERNPSDQRSFQLFLTDEGLAIHQHAEAIMSRVHDELFAPLTPVEQATLVHLLDQCLAA 141
               SCOP domains d3echb_ B: MexR repressor                                                                                                                     SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .......hhhhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhh..eehhhhhhhh------hhhhhhhhhhh..eeeee.......eeeeehhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------AW------------------------F------------------------------E---S----------- SAPs(SNPs)
                    PROSITE -----HTH_MARR_2  PDB: B:6-140 UniProt: 6-140                                                                                                - PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3ech B   1 MNYPVNPDLMPALMAVFQHVRTRIQSELDCQRLDLTPPDVHVLKLIDEQRGLNLQDLGRQM------ITRKIRELEGRNLVRRERNPSDQRSFQLFLTDEGLAIHLHAELIMSRVHDELFAPLTPVEQATLVHLLDQCLAA 141
                                    10        20        30        40        50        60|      |70        80        90       100       110       120       130       140 
                                                                                       61     68

Chain C from PDB  Type:PROTEIN  Length:24
 aligned with Q9HXS2_PSEAE | Q9HXS2 from UniProtKB/TrEMBL  Length:53

    Alignment length:24
                                    39        49    
         Q9HXS2_PSEAE    30 RDYTEQLRRAARRNAWDLYGEHFY  53
               SCOP domains ------------------------ SCOP domains
               CATH domains ------------------------ CATH domains
               Pfam domains ------------------------ Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ------------------------ SAPs(SNPs)
                    PROSITE ------------------------ PROSITE
                 Transcript ------------------------ Transcript
                 3ech C  30 RDYTEQLRRAARRNAWDLYGEHFY  53
                                    39        49

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 '\|'

Asymmetric/Biological Unit

Classes(

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Folds(

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Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: All alpha proteins (14657)

Fold: DNA/RNA-binding 3-helical bundle (1299)

Superfamily: Winged helix DNA-binding domain (576)

Family: MarR-like transcriptional regulators (34)

Protein domain: MexR repressor (3)

Pseudomonas aeruginosa [TaxId: 287] (3)

1a	d3echa_	A:
1b	d3echb_	B:

(no "CATH Domain" information available for 3ECH)

(no "Pfam Domain" information available for 3ECH)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A,B (MEXR_PSEAE | P52003)

molecular function
	GO:0003677	DNA binding	Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
	GO:0042802	identical protein binding	Interacting selectively and non-covalently with an identical protein or proteins.
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
	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:0044212	transcription regulatory region DNA binding	Interacting selectively and non-covalently with a DNA region that regulates the transcription of a region of DNA, which may be a gene, cistron, or operon. Binding may occur as a sequence specific interaction or as an interaction observed only once a factor has been recruited to the DNA by other factors.
biological process
	GO:0050709	negative regulation of protein secretion	Any process that stops, prevents, or reduces the frequency, rate or extent of the controlled release of a protein from a cell.
	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:0034763	negative regulation of transmembrane transport	Any process that stops, prevents, or reduces the frequency, rate or extent of the directed movement of a solute from one side of a membrane to the other.
	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.

Chain C (Q9HXS2_PSEAE | Q9HXS2)

molecular function
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
biological process
	GO:0032411	positive regulation of transporter activity	Any process that activates or increases the activity of a transporter.

Asymmetric/Biological Unit
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UniProtKB/Swiss-Prot
	MEXR_PSEAE \| P52003	:	1lnw 3mex 4zzl

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