1T9A - JenaLib

Asym.Unit - manually (Jmol Viewer)

Asymmetric Unit (Jmol Viewer)

Asym. Unit - sites (Jmol Viewer)

Biological Unit 1 (Jmol Viewer)

Biol. Unit 1 - sites (Jmol Viewer)

Biological Unit 2 (Jmol Viewer)

Title :   CRYSTAL STRUCTURE OF YEAST ACETOHYDROXYACID SYNTHASE IN COMPLEX WITH A SULFONYLUREA HERBICIDE, TRIBENURON METHYL

Authors :   J. A. Mccourt, S. S. Pang, L. W. Guddat, R. G. Duggleby

Date :   16 May 04 (Deposition) - 21 Dec 04 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.59

Chains :   Asym. Unit : A,B
Biol. Unit 1: A,B  (1x)
Biol. Unit 2: A,B  (4x)

Keywords :   Acetohydroxyacid Synthase, Acetolactate Synthase, Herbicide, Sulfonylurea, Thiamin Diphosphate, Fad, Inhibitor, Tribenuron Methyl, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   J. A. Mccourt, S. S. Pang, L. W. Guddat, R. G. Duggleby
Elucidating The Specificity Of Binding Of Sulfonylurea Herbicides To Acetohydroxyacid Synthase.
Biochemistry V. 44 2330 2005
PubMed-ID: 15709745 | Reference-DOI: 10.1021/BI047980A
(for further references see the PDB file header)

Molecule 1 - ACETOLACTATE SYNTHASE, MITOCHONDRIAL
	Chains	:	A, B
	EC Number	:	2.2.1.6
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI BL21(DE3)
	Expression System Plasmid	:	PET30(C)
	Expression System Strain	:	BL21(DE3)
	Expression System Taxid	:	469008
	Expression System Vector Type	:	PLASMID
	Fragment	:	CATALYTIC SUBUNIT
	Gene	:	ILV2, SMR1, YMR108W, YM9718.07
	Organism Common	:	BAKER'S YEAST
	Organism Scientific	:	SACCHAROMYCES CEREVISIAE
	Organism Taxid	:	4932
	Synonym	:	ACETOHYDROXY-ACID SYNTHASE, ALS, AHAS

		1	2
Asymmetric Unit	:	A	B
Biological Unit 1 (1x)	:	A	B
Biological Unit 2 (4x)	:	A	B

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (7, 12)

No.	Name	Count	Type	Full Name
1	1TB	2	Ligand/Ion	METHYL 2-[4-METHOXY-6-METHYL-1,3,5-TRAZIN-2-YL(METHYL)CARBAMOYLSULFAMOYL]BENZOATE
2	FAD	2	Ligand/Ion	FLAVIN-ADENINE DINUCLEOTIDE
3	K	2	Ligand/Ion	POTASSIUM ION
4	MG	2	Ligand/Ion	MAGNESIUM ION
5	P23	2	Ligand/Ion	PROPYL TRIHYDROGEN DIPHOSPHATE
6	YF3	1	Ligand/Ion	2-{[(4-AMINO-2-METHYLPYRIMIDIN-5-YL)METHYL]AMINO}PROPANE-1-THIOL
7	YF4	1	Ligand/Ion	5-{[ETHYL(METHYL)AMINO]METHYL}-2-METHYL-5,6-DIHYDROPYRIMIDIN-4-AMINE

Biological Unit 1 (5, 8)

No.	Name	Count	Type	Full Name
1	1TB	2	Ligand/Ion	METHYL 2-[4-METHOXY-6-METHYL-1,3,5-TRAZIN-2-YL(METHYL)CARBAMOYLSULFAMOYL]BENZOATE
2	FAD	2	Ligand/Ion	FLAVIN-ADENINE DINUCLEOTIDE
3	K	-1	Ligand/Ion	POTASSIUM ION
4	MG	-1	Ligand/Ion	MAGNESIUM ION
5	P23	2	Ligand/Ion	PROPYL TRIHYDROGEN DIPHOSPHATE
6	YF3	1	Ligand/Ion	2-{[(4-AMINO-2-METHYLPYRIMIDIN-5-YL)METHYL]AMINO}PROPANE-1-THIOL
7	YF4	1	Ligand/Ion	5-{[ETHYL(METHYL)AMINO]METHYL}-2-METHYL-5,6-DIHYDROPYRIMIDIN-4-AMINE

Biological Unit 2 (5, 32)

No.	Name	Count	Type	Full Name
1	1TB	8	Ligand/Ion	METHYL 2-[4-METHOXY-6-METHYL-1,3,5-TRAZIN-2-YL(METHYL)CARBAMOYLSULFAMOYL]BENZOATE
2	FAD	8	Ligand/Ion	FLAVIN-ADENINE DINUCLEOTIDE
3	K	-1	Ligand/Ion	POTASSIUM ION
4	MG	-1	Ligand/Ion	MAGNESIUM ION
5	P23	8	Ligand/Ion	PROPYL TRIHYDROGEN DIPHOSPHATE
6	YF3	4	Ligand/Ion	2-{[(4-AMINO-2-METHYLPYRIMIDIN-5-YL)METHYL]AMINO}PROPANE-1-THIOL
7	YF4	4	Ligand/Ion	5-{[ETHYL(METHYL)AMINO]METHYL}-2-METHYL-5,6-DIHYDROPYRIMIDIN-4-AMINE

Asymmetric Unit (12, 12)

No.	Name	Evidence	Residues	Description
01	AC1	SOFTWARE	GLN B:343 , ASP B:350 , GLN B:506 , TRP B:508 , HOH B:4247	BINDING SITE FOR RESIDUE K B 696
02	AC2	SOFTWARE	ASP B:550 , ASN B:577 , GLU B:579 , P23 B:698 , HOH B:4055	BINDING SITE FOR RESIDUE MG B 699
03	AC3	SOFTWARE	GLN A:343 , ASP A:350 , GLN A:506 , TRP A:508 , HOH A:4857	BINDING SITE FOR RESIDUE K A 1696
04	AC4	SOFTWARE	ASP A:550 , ASN A:577 , GLU A:579 , P23 A:1698 , HOH A:4165	BINDING SITE FOR RESIDUE MG A 1699
05	AC5	SOFTWARE	ASP A:379 , ARG A:380 , MET A:582 , VAL A:583 , TRP A:586 , FAD A:701 , HOH A:4904 , GLY B:116 , ALA B:117 , PRO B:192 , ALA B:200 , PHE B:201 , GLN B:202 , LYS B:251 , HOH B:4644	BINDING SITE FOR RESIDUE 1TB A 695
06	AC6	SOFTWARE	YF3 A:700 , VAL B:497 , GLY B:498 , GLN B:499 , HIS B:500 , MET B:525 , GLY B:549 , ASP B:550 , ALA B:551 , SER B:552 , ASN B:577 , GLU B:579 , GLN B:580 , GLY B:581 , MET B:582 , MG B:699 , HOH B:4055	BINDING SITE FOR RESIDUE P23 B 698
07	AC7	SOFTWARE	PRO A:114 , GLU A:139 , THR A:162 , PRO A:165 , ASN A:169 , GLN A:202 , HOH A:4053 , GLY B:523 , MET B:525 , MET B:555 , GLN B:580 , VAL B:583 , P23 B:698 , HOH B:4206	BINDING SITE FOR RESIDUE YF3 A 700
08	AC8	SOFTWARE	ASP A:180 , ARG A:241 , GLY A:307 , ALA A:308 , GLY A:309 , ASN A:312 , THR A:334 , LEU A:335 , GLN A:336 , LEU A:352 , MET A:354 , HIS A:355 , GLY A:374 , ALA A:375 , ARG A:376 , ASP A:378 , ARG A:380 , VAL A:381 , PHE A:406 , GLU A:407 , VAL A:408 , ASN A:412 , GLY A:425 , ASP A:426 , ALA A:427 , GLN A:501 , MET A:502 , SER A:519 , GLY A:520 , GLY A:521 , 1TB A:695 , HOH A:4048 , HOH A:4111 , HOH A:4137 , HOH A:4183 , HOH A:4194 , HOH A:4195 , PHE B:201	BINDING SITE FOR RESIDUE FAD A 701
09	AC9	SOFTWARE	GLY A:116 , VAL A:191 , PRO A:192 , ALA A:200 , PHE A:201 , LYS A:251 , MET B:354 , ASP B:379 , ARG B:380 , MET B:582 , TRP B:586 , FAD B:1701 , HOH B:4329 , HOH B:4592	BINDING SITE FOR RESIDUE 1TB B 1695
10	BC1	SOFTWARE	VAL A:497 , GLY A:498 , GLN A:499 , HIS A:500 , MET A:525 , GLY A:549 , ASP A:550 , ALA A:551 , SER A:552 , ASN A:577 , GLU A:579 , GLN A:580 , GLY A:581 , MET A:582 , MG A:1699 , HOH A:4165 , YF4 B:1700	BINDING SITE FOR RESIDUE P23 A 1698
11	BC2	SOFTWARE	GLY A:523 , MET A:525 , MET A:555 , VAL A:583 , P23 A:1698 , GLY B:115 , GLU B:139 , PRO B:165 , ASN B:169 , GLN B:202 , HOH B:4293	BINDING SITE FOR RESIDUE YF4 B 1700
12	BC3	SOFTWARE	PHE A:201 , ASP B:180 , ARG B:241 , GLY B:307 , ALA B:308 , GLY B:309 , ASN B:312 , THR B:334 , LEU B:335 , MET B:351 , LEU B:352 , MET B:354 , HIS B:355 , GLY B:374 , ALA B:375 , ARG B:376 , ASP B:378 , ARG B:380 , VAL B:381 , PHE B:406 , GLU B:407 , VAL B:408 , ASN B:412 , GLY B:425 , ASP B:426 , ALA B:427 , GLN B:501 , MET B:502 , SER B:519 , GLY B:520 , GLY B:521 , 1TB B:1695 , HOH B:4226 , HOH B:4232 , HOH B:4240 , HOH B:4243 , HOH B:4693	BINDING SITE FOR RESIDUE FAD B 1701

(no "SS Bond" information available for 1T9A)

Asymmetric Unit

No.	Residues
1	Leu A:652	-	Pro A:653
2	Leu B:652	-	Pro B:653

(no "SAP(SNP)/Variant" information available for 1T9A)

Asymmetric Unit (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	TPP_ENZYMES	PS00187	Thiamine pyrophosphate enzymes signature.	ILVB_YEAST	533-552	2	A:533-552 B:533-552

Biological Unit 1 (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	TPP_ENZYMES	PS00187	Thiamine pyrophosphate enzymes signature.	ILVB_YEAST	533-552	2	A:533-552 B:533-552

Biological Unit 2 (1, 8)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	TPP_ENZYMES	PS00187	Thiamine pyrophosphate enzymes signature.	ILVB_YEAST	533-552	8	A:533-552 B:533-552

Asymmetric Unit (1, 2)

	ENSEMBL					UniProtKB			PDB
No.	Transcript ID	Exon	Exon ID	Genome Location	Length	ID	Location	Length	Count	Location	Length
1.1	YMR108W	1	YMR108W.1	XIII:484083-486146	2064	ILVB_YEAST	1-687	687	2	A:84-687 (gaps) B:84-687 (gaps)	604 604

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:597
 aligned with ILVB_YEAST | P07342 from UniProtKB/Swiss-Prot  Length:687

    Alignment length:604
                                    93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313       323       333       343       353       363       373       383       393       403       413       423       433       443       453       463       473       483       493       503       513       523       533       543       553       563       573       583       593       603       613       623       633       643       653       663       673       683    
           ILVB_YEAST    84 DMDTSFVGLTGGQIFNEMMSRQNVDTVFGYPGGAILPVYDAIHNSDKFNFVLPKHEQGAGHMAEGYARASGKPGVVLVTSGPGATNVVTPMADAFADGIPMVVFTGQVPTSAIGTDAFQEADVVGISRSCTKWNVMVKSVEELPLRINEAFEIATSGRPGPVLVDLPKDVTAAILRNPIPTKTTLPSNALNQLTSRAQDEFVMQSINKAADLINLAKKPVLYVGAGILNHADGPRLLKELSDRAQIPVTTTLQGLGSFDQEDPKSLDMLGMHGCATANLAVQNADLIIAVGARFDDRVTGNISKFAPEARRAAAEGRGGIIHFEVSPKNINKVVQTQIAVEGDATTNLGKMMSKIFPVKERSEWFAQINKWKKEYPYAYMEETPGSKIKPQTVIKKLSKVANDTGRHVIVTTGVGQHQMWAAQHWTWRNPHTFITSGGLGTMGYGLPAAIGAQVAKPESLVIDIDGDASFNMTLTELSSAVQAGTPVKILILNNEEQGMVTQWQSLFYEHRYSHTHQLNPDFIKLAEAMGLKGLRVKKQEELDAKLKEFVSTKGPVLLEVEVDKKVPVLPMVAGGSGLDEFINFDPEVERQQTELRHKRTGGKH 687
               SCOP domains -----d1t9aa2 A:89-263 Acetohydroxyacid synthase catalytic subunit                                                                                                                   -------------d1t9aa1 A:277-460 Acetohydroxyacid synthase catalytic subunit                                                                                                                           d1t9aa3 A:461-687 Acetohydroxyacid synthase catalytic subunit                                                                                                                                                                       SCOP domains
               CATH domains 1t9aA01 A:84-278  [code=3.40.50.970, no name defined]                                                                                                                                              1t9aA02 A:279-459 TPP-binding domain                                                                                                                                                 1t9aA03 A:460-687  [code=3.40.50.970, no name defined]                                                                                                                                                                               CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .ee......hhhhhhhhhhhhh...eeee.....hhhhhhhh......eee...hhhhhhhhhhhhhhhhh..eeeee..hhhhhhhhhhhhhhhhhh..eeeeeee..............hhhhhhhhhh.eeee..hhhhhhhhhhhhhhhhhh....eeeeeeehhhhhh.....ee.hhhh.-------.hhhhhhhhhhhhhhhhhhhhhh..eeeee.hhhhhh.hhhhhhhhhhhhhh..eee.hhhh.........eeee.....hhhhhhhhhhh.eeeee..........hhhhhhhhhhhhhhh...eeeeee.hhhhh.......eeee.hhhhhhhhhhhhh.....hhhhhhhhhhhhhhh.............hhhhhhhhhhhhhhhh...eeeee..hhhhhhhhhhh.......ee.........hhhhhhhhhhhhh...eeeeeeehhhhhhhh.hhhhhhhhh...eeeeee...hhhhhhhhhhhh............hhhhhhhhhh.eeeee.hhhhhhhhhhhhhhh...eeeeee.......................hhhhhhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TPP_ENZYMES         --------------------------------------------------------------------------------------------------------------------------------------- PROSITE
               Transcript 1 Exon 1.1  PDB: A:84-687 (gaps) UniProt: 1-687 [INCOMPLETE]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   Transcript 1
                 1t9a A  84 DMDTSFVGLTGGQIFNEMMSRQNVDTVFGYPGGAILPVYDAIHNSDKFNFVLPKHEQGAGHMAEGYARASGKPGVVLVTSGPGATNVVTPMADAFADGIPMVVFTGQVPTSAIGTDAFQEADVVGISRSCTKWNVMVKSVEELPLRINEAFEIATSGRPGPVLVDLPKDVTAAILRNPIPTKTTLP-------TSRAQDEFVMQSINKAADLINLAKKPVLYVGAGILNHADGPRLLKELSDRAQIPVTTTLQGLGSFDQEDPKSLDMLGMHGCATANLAVQNADLIIAVGARFDDRVTGNISKFAPEARRAAAEGRGGIIHFEVSPKNINKVVQTQIAVEGDATTNLGKMMSKIFPVKERSEWFAQINKWKKEYPYAYMEETPGSKIKPQTVIKKLSKVANDTGRHVIVTTGVGQHQMWAAQHWTWRNPHTFITSGGLGTMGYGLPAAIGAQVAKPESLVIDIDGDASFNMTLTELSSAVQAGTPVKILILNNEEQGMVTQWQSLFYEHRYSHTHQLNPDFIKLAEAMGLKGLRVKKQEELDAKLKEFVSTKGPVLLEVEVDKKVPVLPMVAGGSGLDEFINFDPEVERQQTELRHKRTGGKH 687
                                    93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253       263     |   -   |   283       293       303       313       323       333       343       353       363       373       383       393       403       413       423       433       443       453       463       473       483       493       503       513       523       533       543       553       563       573       583       593       603       613       623       633       643       653       663       673       683    
                                                                                                                                                                                                                   269     277

Chain B from PDB  Type:PROTEIN  Length:593
 aligned with ILVB_YEAST | P07342 from UniProtKB/Swiss-Prot  Length:687

    Alignment length:604
                                    93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313       323       333       343       353       363       373       383       393       403       413       423       433       443       453       463       473       483       493       503       513       523       533       543       553       563       573       583       593       603       613       623       633       643       653       663       673       683    
           ILVB_YEAST    84 DMDTSFVGLTGGQIFNEMMSRQNVDTVFGYPGGAILPVYDAIHNSDKFNFVLPKHEQGAGHMAEGYARASGKPGVVLVTSGPGATNVVTPMADAFADGIPMVVFTGQVPTSAIGTDAFQEADVVGISRSCTKWNVMVKSVEELPLRINEAFEIATSGRPGPVLVDLPKDVTAAILRNPIPTKTTLPSNALNQLTSRAQDEFVMQSINKAADLINLAKKPVLYVGAGILNHADGPRLLKELSDRAQIPVTTTLQGLGSFDQEDPKSLDMLGMHGCATANLAVQNADLIIAVGARFDDRVTGNISKFAPEARRAAAEGRGGIIHFEVSPKNINKVVQTQIAVEGDATTNLGKMMSKIFPVKERSEWFAQINKWKKEYPYAYMEETPGSKIKPQTVIKKLSKVANDTGRHVIVTTGVGQHQMWAAQHWTWRNPHTFITSGGLGTMGYGLPAAIGAQVAKPESLVIDIDGDASFNMTLTELSSAVQAGTPVKILILNNEEQGMVTQWQSLFYEHRYSHTHQLNPDFIKLAEAMGLKGLRVKKQEELDAKLKEFVSTKGPVLLEVEVDKKVPVLPMVAGGSGLDEFINFDPEVERQQTELRHKRTGGKH 687
               SCOP domains -----d1t9ab2 B:89-263 Acetohydroxyacid synthase catalytic subunit                                                                                                                   -----------------d1t9ab1 B:281-460 Acetohydroxyacid synthase catalytic subunit                                                                                                                       d1t9ab3 B:461-687 Acetohydroxyacid synthase catalytic subunit                                                                                                                                                                       SCOP domains
               CATH domains 1t9aB01 B:84-269  [code=3.40.50.970, no name defined]                                                                                                                                     -----------1t9aB02 B:281-459 TPP-binding domain                                                                                                                                               1t9aB03 B:460-687  [code=3.40.50.970, no name defined]                                                                                                                                                                               CATH domains
           Pfam domains (1) --------TPP_enzyme_N-1t9aB05 B:92-262                                                                                                                                              --------------------------TPP_enzyme_M-1t9aB01 B:289-435                                                                                                                     ------------------------------------------------------------TPP_enzyme_C-1t9aB03 B:496-643                                                                                                                      -------------------------------------------- Pfam domains (1)
           Pfam domains (2) --------TPP_enzyme_N-1t9aB06 B:92-262                                                                                                                                              --------------------------TPP_enzyme_M-1t9aB02 B:289-435                                                                                                                     ------------------------------------------------------------TPP_enzyme_C-1t9aB04 B:496-643                                                                                                                      -------------------------------------------- Pfam domains (2)
         Sec.struct. author .ee......hhhhhhhhhhhhh...eeeee....hhhhhhhh......eee...hhhhhhhhhhhhhhhhh..eeeee..hhhhhhhhhhhhhhhhh...eeeeeee..............hhhhhhhhhh.eeee..hhhhhhhhhhhhhhhhhh....eeeeeeehhhhhh.....ee.hhh..-----------.....................eeeee.hhhhhh.hhhhhhhhhhhhh...eee.hhhh.........eeee.....hhhhhhhhhhh.eeeee..........hhhhhhhhhhhhhhh...eeeeee.hhhhh.......eeee.hhhhhhhhhhhhh.....hhhhhhhhhhhhhhh.............hhhhhhhhhhhhhhh....eeeee..hhhhhhhhhhh.......ee.........hhhhhhhhhhhhh...eeeeeeehhhhhhhh.hhhhhhhhh...eeeeee...hhhhhhhhhhh.............hhhhhhhhh..eeeee.hhhhhhhhhhhhhhh...eeeeee.......................hhhhhhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TPP_ENZYMES         --------------------------------------------------------------------------------------------------------------------------------------- PROSITE
               Transcript 1 Exon 1.1  PDB: B:84-687 (gaps) UniProt: 1-687 [INCOMPLETE]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   Transcript 1
                 1t9a B  84 DMDTSFVGLTGGQIFNEMMSRQNVDTVFGYPGGAILPVYDAIHNSDKFNFVLPKHEQGAGHMAEGYARASGKPGVVLVTSGPGATNVVTPMADAFADGIPMVVFTGQVPTSAIGTDAFQEADVVGISRSCTKWNVMVKSVEELPLRINEAFEIATSGRPGPVLVDLPKDVTAAILRNPIPTKTTLP-----------QDEFVMQSINKAADLINLAKKPVLYVGAGILNHADGPRLLKELSDRAQIPVTTTLQGLGSFDQEDPKSLDMLGMHGCATANLAVQNADLIIAVGARFDDRVTGNISKFAPEARRAAAEGRGGIIHFEVSPKNINKVVQTQIAVEGDATTNLGKMMSKIFPVKERSEWFAQINKWKKEYPYAYMEETPGSKIKPQTVIKKLSKVANDTGRHVIVTTGVGQHQMWAAQHWTWRNPHTFITSGGLGTMGYGLPAAIGAQVAKPESLVIDIDGDASFNMTLTELSSAVQAGTPVKILILNNEEQGMVTQWQSLFYEHRYSHTHQLNPDFIKLAEAMGLKGLRVKKQEELDAKLKEFVSTKGPVLLEVEVDKKVPVLPMVAGGSGLDEFINFDPEVERQQTELRHKRTGGKH 687
                                    93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253       263     |   -       283       293       303       313       323       333       343       353       363       373       383       393       403       413       423       433       443       453       463       473       483       493       503       513       523       533       543       553       563       573       583       593       603       613       623       633       643       653       663       673       683    
                                                                                                                                                                                                                   269         281

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 Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

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

Topology: Rossmann fold (7312)

Homologous Superfamily: [code=3.40.50.970, no name defined] (144)

Baker's yeast (Saccharomyces cerevisiae) (17)

1a	1t9aA03	A:460-687
1b	1t9aB03	B:460-687
1c	1t9aA01	A:84-278
1d	1t9aB01	B:84-269

Homologous Superfamily: TPP-binding domain (120)

Baker's yeast (Saccharomyces cerevisiae) (20)

2a	1t9aB02	B:281-459
2b	1t9aA02	A:279-459

Asymmetric Unit(hide GO term definitions)

Chain A,B (ILVB_YEAST | P07342)

molecular function
	GO:0003984	acetolactate synthase activity	Catalysis of the reaction: 2 pyruvate = 2-acetolactate + CO2.
	GO:0003824	catalytic activity	Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
	GO:0050660	flavin adenine dinucleotide binding	Interacting selectively and non-covalently with FAD, flavin-adenine dinucleotide, the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes, in either the oxidized form, FAD, or the reduced form, FADH2.
	GO:0000287	magnesium ion binding	Interacting selectively and non-covalently with magnesium (Mg) ions.
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
	GO:0030976	thiamine pyrophosphate binding	Interacting selectively and non-covalently with thiamine pyrophosphate, the diphosphoric ester of thiamine. Acts as a coenzyme of several (de)carboxylases, transketolases, and alpha-oxoacid dehydrogenases.
	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:0009082	branched-chain amino acid biosynthetic process	The chemical reactions and pathways resulting in the formation of amino acids containing a branched carbon skeleton, comprising isoleucine, leucine and valine.
	GO:0008652	cellular amino acid biosynthetic process	The chemical reactions and pathways resulting in the formation of amino acids, organic acids containing one or more amino substituents.
	GO:0009097	isoleucine biosynthetic process	The chemical reactions and pathways resulting in the formation of isoleucine, (2R,3R)-2-amino-3-methylpentanoic acid.
	GO:0009099	valine biosynthetic process	The chemical reactions and pathways resulting in the formation of valine, 2-amino-3-methylbutanoic acid.
cellular component
	GO:0005948	acetolactate synthase complex	A dimeric (a large and a small chain) or tetrameric (two large and two small chains) enzyme complex. Catalyzes the formation of acetolactate from pyruvate.
	GO:0005739	mitochondrion	A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.

Asymmetric Unit
	Complete Structure
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	Ligands, Modified Residues, Ions
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Access by PDB/NDB ID
	1t9a
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	ILVB_YEAST \| P07342
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	2.2.1.6
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	ILVB_YEAST \| P07342
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UniProtKB/Swiss-Prot
	ILVB_YEAST \| P07342	:	1jsc 1n0h 1t9b 1t9c 1t9d 5fem 5ims 5inu 5inv

1n0h	CRYSTAL STRUCTURE OF YEAST ACETOHYDROXYACID SYNTHASE IN COMPLEX WITH A SULFONYLUREA HERBICIDE, CHLORIMURON ETHYL
1t9b	CRYSTAL STRUCTURE OF YEAST ACETOHYDROXYACID SYNTHASE IN COMPLEX WITH A SULFONYLUREA HERBICIDE, CHLORSULFURON
1t9c	CRYSTAL STRUCTURE OF YEAST ACETOHYDROXYACID SYNTHASE IN COMPLEX WITH A SULFONYLUREA HERBICIDE, SULFOMETURON METHYL
1t9d	CRYSTAL STRUCTURE OF YEAST ACETOHYDROXYACID SYNTHASE IN COMPLEX WITH A SULFONYLUREA HERBICIDE, METSULFURON METHYL

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (7, 12)

Sites (12, 12)

SS Bonds (0, 0)

Cis Peptide Bonds (2, 2)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (1, 2)

Exons (1, 2)

Sequences/Alignments

Classification and Annotation

SCOP Domains (3, 6)

CATH Domains (2, 6)

Pfam Domains (3, 6)

Gene Ontology (13, 13)

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Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

Related Entries Specified in the PDB File