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Description

Title :   CRYSTAL STRUCTURE OF THE AHL SYNTHASE LASI

Authors :   T. A. Gould, H. P. Schweizer, M. E. Churchill

Date :   01 Dec 03 (Deposition) - 24 Aug 04 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.30

Chains :   Asym. Unit : A
Biol. Unit 1: A  (1x)
Biol. Unit 2: A  (12x)
Biol. Unit 3: A  (12x)

Keywords :   Alpha-Beta-Alpha Sandwich, Phosphopantetheine Fold, Signaling Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   T. A. Gould, H. P. Schweizer, M. E. Churchill
Structure Of The Pseudomonas Aeruginosa Acyl-Homoserinelactone Synthase Lasi.
Mol. Microbiol. V. 53 1135 2004
PubMed-ID: 15306017 | Reference-DOI: 10.1111/J.1365-2958.2004.04211.X

Compounds

Molecule 1 - AUTOINDUCER SYNTHESIS PROTEIN LASI
	Chains	:	A
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PVIET
	Expression System Strain	:	SA1503 (DE3)
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Gene	:	LASI, PA1432
	Mutation	:	YES
	Organism Scientific	:	PSEUDOMONAS AERUGINOSA
	Organism Taxid	:	287
	Synonym	:	AHL SYNTHASE LASI

Structural Features

Chains, Units

		1
Asymmetric Unit	:	A
Biological Unit 1 (1x)	:	A
Biological Unit 2 (12x)	:	A
Biological Unit 3 (12x)	:	A

Summary Information (see also Sequences/Alignments below)

Ligands, Modified Residues, Ions (2, 5)

Asymmetric Unit (2, 5)

No.	Name	Count	Type	Full Name
1	SO4	4	Ligand/Ion	SULFATE ION
2	ZN	1	Ligand/Ion	ZINC ION

Biological Unit 1 (1, 4)

No.	Name	Count	Type	Full Name
1	SO4	4	Ligand/Ion	SULFATE ION
2	ZN	-1	Ligand/Ion	ZINC ION

Biological Unit 2 (1, 48)

No.	Name	Count	Type	Full Name
1	SO4	48	Ligand/Ion	SULFATE ION
2	ZN	-1	Ligand/Ion	ZINC ION

Biological Unit 3 (1, 48)

No.	Name	Count	Type	Full Name
1	SO4	48	Ligand/Ion	SULFATE ION
2	ZN	-1	Ligand/Ion	ZINC ION

Sites (5, 5)

Asymmetric Unit (5, 5)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	GLY A:32 , TRP A:33 , ASP A:34 , VAL A:35	BINDING SITE FOR RESIDUE SO4 A 401
2	AC2	SOFTWARE	ARG A:154	BINDING SITE FOR RESIDUE SO4 A 402
3	AC3	SOFTWARE	ARG A:172	BINDING SITE FOR RESIDUE SO4 A 403
4	AC4	SOFTWARE	THR A:145 , VAL A:146 , GLY A:147 , LYS A:150 , ARG A:172 , HOH A:531	BINDING SITE FOR RESIDUE SO4 A 404
5	AC5	SOFTWARE	LEU A:133 , GLY A:397 , SER A:398 , HIS A:399	BINDING SITE FOR RESIDUE ZN A 405

SS Bonds (0, 0)

(no "SS Bond" information available for 1RO5)

Cis Peptide Bonds (0, 0)

(no "Cis Peptide Bond" information available for 1RO5)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

(no "SAP(SNP)/Variant" information available for 1RO5)

PROSITE Motifs (2, 2)

Asymmetric Unit (2, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	AUTOINDUCER_SYNTH_2	PS51187	Autoinducer synthase family profile.	LASI_PSEAE	1-189	1	A:1-189
2	AUTOINDUCER_SYNTH_1	PS00949	Autoinducer synthase family signature.	LASI_PSEAE	22-47	1	A:22-47

Biological Unit 1 (2, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	AUTOINDUCER_SYNTH_2	PS51187	Autoinducer synthase family profile.	LASI_PSEAE	1-189	1	A:1-189
2	AUTOINDUCER_SYNTH_1	PS00949	Autoinducer synthase family signature.	LASI_PSEAE	22-47	1	A:22-47

Biological Unit 2 (2, 24)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	AUTOINDUCER_SYNTH_2	PS51187	Autoinducer synthase family profile.	LASI_PSEAE	1-189	12	A:1-189
2	AUTOINDUCER_SYNTH_1	PS00949	Autoinducer synthase family signature.	LASI_PSEAE	22-47	12	A:22-47

Biological Unit 3 (2, 24)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	AUTOINDUCER_SYNTH_2	PS51187	Autoinducer synthase family profile.	LASI_PSEAE	1-189	12	A:1-189
2	AUTOINDUCER_SYNTH_1	PS00949	Autoinducer synthase family signature.	LASI_PSEAE	22-47	12	A:22-47

Exons (0, 0)

(no "Exon" information available for 1RO5)

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:197
 aligned with LASI_PSEAE | P33883 from UniProtKB/Swiss-Prot  Length:201

    Alignment length:200
                               1                                                                                                                                                                                                    
                               |     7        17        27        37        47        57        67        77        87        97       107       117       127       137       147       157       167       177       187       197
           LASI_PSEAE     - ---MIVQIGRREEFDKKLLGEMHKLRAQVFKERKGWDVSVIDEMEIDGYDALSPYYMLIQEDTPEAQVFGCWRILDTTGPYMLKNTFPELLHGKEAPCSPHIWELSRFAINSGQKGSLGFSDCTLEAMRALARYSLQNDIQTLVTVTTVGVEKMMIRAGLDVSRFGPHLKIGIERAVALRIELNAKTQIALYGGVLVEQR 197
               SCOP domains d1ro5a_ A: Autoinducer synthesis protein LasI                                                                                                                                                            SCOP domains
               CATH domains ---1ro5A01 A:1-190  [code=3.40.630.30, no name defined]                                                                                                                                          ------- CATH domains
               Pfam domains ----------Autoind_synth-1ro5A01 A:8-189                                                                                                                                                         -------- Pfam domains
         Sec.struct. author ....eeeeee.hhhhhhhhhhhhhhhhhhhh........ee..ee.hhhhhh..eeeeeee..---eeeeeeeeee....hhhhhhhhhhhh.........eeeeeeeee.........hhhhhhhhhhhhhhhhhh....eeeeeeehhhhhhhhhh..eeee....eee..eeeeeeeee.hhhhhhhhhh....... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ---AUTOINDUCER_SYNTH_2  PDB: A:1-189 UniProt: 1-189                                                                                                                                             -------- PROSITE (1)
                PROSITE (2) ------------------------AUTOINDUCER_SYNTH_1       ------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE (2)
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1ro5 A 397 GSHMIVQIGRREEFDKKLLGEMHKLRAQVFKERKGWDVSVIDEMEIDGYDALSPYYMLIQEDG---QVFGCWRILDTTGPYMLKNTFPELLHGKEAPCSPHIWELSRFAINSGQKGSLGFSDCTLEAMRALARYSLQNDIQTLVTVTTVGVEKMMIRAGLDVSRFGPHLKIGIERAVALRIELNAKTQIALYGGVLVEQR 197
                              ||     7        17        27        37        47        57  |   | 67        77        87        97       107       117       127       137       147       157       167       177       187       197
                              ||                                                        60G  64                                                                                                                                     
                            399|                                                                                                                                                                                                    
                               1

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	-	→ 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 (1, 1)

Asymmetric Unit

Classes(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: Alpha and beta proteins (a+b) (23004)

Fold: Acyl-CoA N-acyltransferases (Nat) (250)

Superfamily: Acyl-CoA N-acyltransferases (Nat) (250)

Family: Autoinducer synthetase (3)

Protein domain: Autoinducer synthesis protein LasI (1)

Pseudomonas aeruginosa [TaxId: 287] (1)

d1ro5a_

CATH Domains (1, 1)

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: 3-Layer(aba) Sandwich (12045)

Topology: Aminopeptidase (284)

Homologous Superfamily: [code=3.40.630.30, no name defined] (126)

Pseudomonas aeruginosa. Organism_taxid: 287. (2)

1ro5A01

A:1-190

Pfam Domains (1, 1)

Asymmetric Unit

Clans(

)

Families(

)

Organisms( (-)

)

Clan: Acetyltrans (109)

Family: Autoind_synth (3)

Pseudomonas aeruginosa (1)

Autoind_synth-1ro5A01

A:8-189

Gene Ontology (4, 4)

Asymmetric Unit(hide GO term definitions)

Chain A (LASI_PSEAE | P33883)

molecular function
	GO:0061579	N-acyl homoserine lactone synthase activity	Catalyzing the reaction: acyl-[acyl-carrier-protein] + S-adenosyl-L-methionine -> [acyl-carrier- protein] + S-methyl-5'-thioadenosine + N-acyl-L-homoserine lactone.
	GO:0016740	transferase activity	Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
biological process
	GO:0009372	quorum sensing	The process in which single-celled organisms monitor their population density by detecting the concentration of small, diffusible signal molecules produced by the cells themselves.
	GO:0007165	signal transduction	The cellular process in which a signal is conveyed to trigger a change in the activity or state of a cell. Signal transduction begins with reception of a signal (e.g. a ligand binding to a receptor or receptor activation by a stimulus such as light), or for signal transduction in the absence of ligand, signal-withdrawal or the activity of a constitutively active receptor. Signal transduction ends with regulation of a downstream cellular process, e.g. regulation of transcription or regulation of a metabolic process. Signal transduction covers signaling from receptors located on the surface of the cell and signaling via molecules located within the cell. For signaling between cells, signal transduction is restricted to events at and within the receiving cell.

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Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

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Related Entries Specified in the PDB File

1k4j	AHL SYNTHASE FROM PANTOEA STEWARTTI ESAI WITH RHENATE
1kzf	AHL SYNTHASE FROM PANTOEA STEWARTTI ESAI