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Title :   E. COLI KETOL-ACID REDUCTOISOMERASE IN COMPLEX WITH NADPH AND MG2+

Authors :   S. H. Wong, T. G. A. Lonhienne, D. J. Winzor, G. Schenk, L. W. Guddat

Date :   11 Nov 11 (Deposition) - 17 Oct 12 (Release) - 26 Jun 13 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.30

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

Keywords :   Branched-Chain Amino Acid Biosynthesis, Rossmann Fold, Reductoisomerase, Acetolactate, Oxidoreductase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   S. H. Wong, T. G. A. Lonhienne, D. J. Winzor, G. Schenk, L. W. Guddat
Bacterial And Plant Ketol-Acid Reductoisomerases Have Different Mechanisms Of Induced Fit During The Catalytic Cycle
J. Mol. Biol. V. 424 168 2012
PubMed-ID: 23036858 | Reference-DOI: 10.1016/J.JMB.2012.09.018

Molecule 1 - KETOL-ACID REDUCTOISOMERASE
	Chains	:	A, B
	EC Number	:	1.1.1.86
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Gene	:	ILVC
	Organism Scientific	:	ESCHERICHIA COLI
	Organism Taxid	:	83333
	Strain	:	K12
	Synonym	:	ACETOHYDROXY-ACID ISOMEROREDUCTASE, ALPHA-KETO-BETA- HYDROXYLACIL REDUCTOISOMERASE

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

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (4, 17)

No.	Name	Count	Type	Full Name
1	CSX	2	Mod. Amino Acid	S-OXY CYSTEINE
2	MG	4	Ligand/Ion	MAGNESIUM ION
3	NDP	2	Ligand/Ion	NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDEPHOSPHATE
4	SO4	9	Ligand/Ion	SULFATE ION

Biological Unit 1 (3, 14)

No.	Name	Count	Type	Full Name
1	CSX	2	Mod. Amino Acid	S-OXY CYSTEINE
2	MG	-1	Ligand/Ion	MAGNESIUM ION
3	NDP	2	Ligand/Ion	NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDEPHOSPHATE
4	SO4	10	Ligand/Ion	SULFATE ION

Biological Unit 2 (3, 12)

No.	Name	Count	Type	Full Name
1	CSX	2	Mod. Amino Acid	S-OXY CYSTEINE
2	MG	-1	Ligand/Ion	MAGNESIUM ION
3	NDP	2	Ligand/Ion	NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDEPHOSPHATE
4	SO4	8	Ligand/Ion	SULFATE ION

Asymmetric Unit (15, 15)

No.	Name	Evidence	Residues	Description
01	AC1	SOFTWARE	GLY A:44 , CYS A:45 , GLY A:46 , ALA A:47 , GLN A:48 , ARG A:68 , ALA A:71 , ARG A:76 , SER A:78 , TYR A:92 , LEU A:105 , THR A:106 , PRO A:107 , ASP A:108 , GLN A:110 , HIS A:111 , ASP A:113 , VAL A:114 , SER A:131 , HIS A:132 , PRO A:154 , HOH A:515 , HOH A:580 , HOH A:597 , HOH A:613 , HOH A:694 , HOH A:716 , HOH A:766 , HOH A:784 , HOH A:786 , HOH A:807 , HOH A:812 , GLU B:74	BINDING SITE FOR RESIDUE NDP A 492
02	AC2	SOFTWARE	ALA A:2 , ASN A:3 , ASN A:6 , HOH A:752 , HOH A:857	BINDING SITE FOR RESIDUE SO4 A 493
03	AC3	SOFTWARE	ARG A:11 , GLN A:12 , HOH A:559 , HOH A:870 , HOH B:876	BINDING SITE FOR RESIDUE SO4 A 494
04	AC4	SOFTWARE	ARG A:162 , LYS A:166 , HOH A:672	BINDING SITE FOR RESIDUE SO4 A 495
05	AC5	SOFTWARE	HIS A:201 , ARG A:202	BINDING SITE FOR RESIDUE SO4 A 496
06	AC6	SOFTWARE	ARG A:284 , LEU A:288 , GLN A:291 , PHE A:435 , GLU A:438 , HOH A:600	BINDING SITE FOR RESIDUE SO4 A 497
07	AC7	SOFTWARE	ASP A:217 , GLU A:389 , GLU A:393 , HOH A:761 , HOH A:762 , HOH A:763	BINDING SITE FOR RESIDUE MG A 498
08	AC8	SOFTWARE	ASP A:217 , GLU A:221 , HOH A:763 , HOH A:764 , HOH A:771 , HOH A:773 , HOH A:775	BINDING SITE FOR RESIDUE MG A 499
09	AC9	SOFTWARE	GLU A:74 , GLY B:44 , CYS B:45 , GLY B:46 , ALA B:47 , GLN B:48 , ARG B:68 , ALA B:71 , ARG B:76 , SER B:78 , TYR B:92 , LEU B:105 , THR B:106 , PRO B:107 , ASP B:108 , GLN B:110 , HIS B:111 , ASP B:113 , VAL B:114 , SER B:131 , HIS B:132 , PRO B:154 , HOH B:522 , HOH B:528 , HOH B:530 , HOH B:574 , HOH B:582 , HOH B:749 , HOH B:750 , HOH B:798 , HOH B:813	BINDING SITE FOR RESIDUE NDP B 492
10	BC1	SOFTWARE	ALA B:2 , ASN B:3 , ASN B:6 , HOH B:760 , HOH B:785 , HOH B:790	BINDING SITE FOR RESIDUE SO4 B 493
11	BC2	SOFTWARE	HOH A:732 , ARG B:11 , GLN B:12 , HOH B:517	BINDING SITE FOR RESIDUE SO4 B 494
12	BC3	SOFTWARE	ARG B:162 , LYS B:166 , HOH B:707	BINDING SITE FOR RESIDUE SO4 B 495
13	BC4	SOFTWARE	HIS B:201 , ARG B:202 , HOH B:590	BINDING SITE FOR RESIDUE SO4 B 496
14	BC5	SOFTWARE	ASP B:217 , GLU B:389 , GLU B:393 , HOH B:765 , HOH B:766 , HOH B:767	BINDING SITE FOR RESIDUE MG B 497
15	BC6	SOFTWARE	ASP B:217 , HOH B:766 , HOH B:767 , HOH B:768 , HOH B:774 , HOH B:777 , HOH B:792	BINDING SITE FOR RESIDUE MG B 498

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

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

(no "SAP(SNP)/Variant" information available for 3ULK)

(no "PROSITE Motif" information available for 3ULK)

(no "Exon" information available for 3ULK)

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:489
 aligned with ILVC_ECOLI | P05793 from UniProtKB/Swiss-Prot  Length:491

    Alignment length:489
                                    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       360       370       380       390       400       410       420       430       440       450       460       470       480         
           ILVC_ECOLI     1 MANYFNTLNLRQQLAQLGKCRFMGRDEFADGASYLQGKKVVIVGCGAQGLNQGLNMRDSGLDISYALRKEAIAEKRASWRKATENGFKVGTYEELIPQADLVINLTPDKQHSDVVRTVQPLMKDGAALGYSHGFNIVEVGEQIRKDITVVMVAPKCPGTEVREEYKRGFGVPTLIAVHPENDPKGEGMAIAKAWAAATGGHRAGVLESSFVAEVKSDLMGEQTILCGMLQAGSLLCFDKLVEEGTDPAYAEKLIQFGWETITEALKQGGITLMMDRLSNPAKLRAYALSEQLKEIMAPLFQKHMDDIISGEFSSGMMADWANDDKKLLTWREETGKTAFETAPQYEGKIGEQEYFDKGVLMIAMVKAGVELAFETMVDSGIIEESAYYESLHELPLIANTIARKRLYEMNVVISDTAEYGNYLFSYACVPLLKPFMAELQPGDLGKAIPEGAVDNGQLRDVNEAIRSHAIEQVGKKLRGYMTDMKRIAV 489
               SCOP domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...hhhhhhhhhhhhhhh..ee.hhhhhh..hhhhh..eeeee..hhhhhhhhhhhhhh..eeeeeehhhhhhh.hhhhhhhhhh..eeeehhhhhhhh.eeee..hhhhhhhhhhhhhhhh....eeee..hhhhhh.........eeeeeee..hhhhhhhhhhh.....eeeee.hhhh...hhhhhhhhhhhhhhhhhh.eee.hhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhh.......hhhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...............hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3ulk A   1 MANYFNTLNLRQQLAQLGKcRFMGRDEFADGASYLQGKKVVIVGCGAQGLNQGLNMRDSGLDISYALRKEAIAEKRASWRKATENGFKVGTYEELIPQADLVINLTPDKQHSDVVRTVQPLMKDGAALGYSHGFNIVEVGEQIRKDITVVMVAPKCPGTEVREEYKRGFGVPTLIAVHPENDPKGEGMAIAKAWAAATGGHRAGVLESSFVAEVKSDLMGEQTILCGMLQAGSLLCFDKLVEEGTDPAYAEKLIQFGWETITEALKQGGITLMMDRLSNPAKLRAYALSEQLKEIMAPLFQKHMDDIISGEFSSGMMADWANDDKKLLTWREETGKTAFETAPQYEGKIGEQEYFDKGVLMIAMVKAGVELAFETMVDSGIIEESAYYESLHELPLIANTIARKRLYEMNVVISDTAEYGNYLFSYACVPLLKPFMAELQPGDLGKAIPEGAVDNGQLRDVNEAIRSHAIEQVGKKLRGYMTDMKRIAV 489
                                    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       360       370       380       390       400       410       420       430       440       450       460       470       480         
                                              20-CSX

Chain B from PDB  Type:PROTEIN  Length:489
 aligned with ILVC_ECOLI | P05793 from UniProtKB/Swiss-Prot  Length:491

    Alignment length:489
                                    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       360       370       380       390       400       410       420       430       440       450       460       470       480         
           ILVC_ECOLI     1 MANYFNTLNLRQQLAQLGKCRFMGRDEFADGASYLQGKKVVIVGCGAQGLNQGLNMRDSGLDISYALRKEAIAEKRASWRKATENGFKVGTYEELIPQADLVINLTPDKQHSDVVRTVQPLMKDGAALGYSHGFNIVEVGEQIRKDITVVMVAPKCPGTEVREEYKRGFGVPTLIAVHPENDPKGEGMAIAKAWAAATGGHRAGVLESSFVAEVKSDLMGEQTILCGMLQAGSLLCFDKLVEEGTDPAYAEKLIQFGWETITEALKQGGITLMMDRLSNPAKLRAYALSEQLKEIMAPLFQKHMDDIISGEFSSGMMADWANDDKKLLTWREETGKTAFETAPQYEGKIGEQEYFDKGVLMIAMVKAGVELAFETMVDSGIIEESAYYESLHELPLIANTIARKRLYEMNVVISDTAEYGNYLFSYACVPLLKPFMAELQPGDLGKAIPEGAVDNGQLRDVNEAIRSHAIEQVGKKLRGYMTDMKRIAV 489
               SCOP domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...hhhhhhhhhhhhhhh..ee.hhhhhh..hhhhh..eeeee..hhhhhhhhhhhhhh..eeeeeehhhhhhh.hhhhhhhhhh..eeeehhhhhhhh.eeee..hhhhhhhhhhhhhhhh....eeee..hhhhhh.........eeeeeee..hhhhhhhhhhh.....eeeee.hhhh...hhhhhhhhhhhhhhhhhh.eee.hhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhh.......hhhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...............hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3ulk B   1 MANYFNTLNLRQQLAQLGKcRFMGRDEFADGASYLQGKKVVIVGCGAQGLNQGLNMRDSGLDISYALRKEAIAEKRASWRKATENGFKVGTYEELIPQADLVINLTPDKQHSDVVRTVQPLMKDGAALGYSHGFNIVEVGEQIRKDITVVMVAPKCPGTEVREEYKRGFGVPTLIAVHPENDPKGEGMAIAKAWAAATGGHRAGVLESSFVAEVKSDLMGEQTILCGMLQAGSLLCFDKLVEEGTDPAYAEKLIQFGWETITEALKQGGITLMMDRLSNPAKLRAYALSEQLKEIMAPLFQKHMDDIISGEFSSGMMADWANDDKKLLTWREETGKTAFETAPQYEGKIGEQEYFDKGVLMIAMVKAGVELAFETMVDSGIIEESAYYESLHELPLIANTIARKRLYEMNVVISDTAEYGNYLFSYACVPLLKPFMAELQPGDLGKAIPEGAVDNGQLRDVNEAIRSHAIEQVGKKLRGYMTDMKRIAV 489
                                    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       360       370       380       390       400       410       420       430       440       450       460       470       480         
                                              20-CSX

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 '\|'

(no "SCOP Domain" information available for 3ULK)

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

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

Asymmetric Unit(hide GO term definitions)

Chain A,B (ILVC_ECOLI | P05793)

molecular function
	GO:0050661	NADP binding	Interacting selectively and non-covalently with nicotinamide-adenine dinucleotide phosphate, a coenzyme involved in many redox and biosynthetic reactions; binding may be to either the oxidized form, NADP+, or the reduced form, NADPH.
	GO:0004455	ketol-acid reductoisomerase activity	Catalysis of the reaction: (R)-2,3-dihydroxy-3-methylbutanoate + NADP+ = (S)-2-hydroxy-2-methyl-3-oxobutanoate + NADPH + H+.
	GO:0000287	magnesium ion binding	Interacting selectively and non-covalently with magnesium (Mg) ions.
	GO:0016491	oxidoreductase activity	Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
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:0055114	oxidation-reduction process	A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
	GO:0009099	valine biosynthetic process	The chemical reactions and pathways resulting in the formation of valine, 2-amino-3-methylbutanoic acid.
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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	Cis Peptide Bonds
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	3ulk
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	1.1.1.86
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UniProtKB/Swiss-Prot
	ILVC_ECOLI \| P05793	:	1yrl

1yrl	FREE E. COLI KETOL-ACID REDUCTOISOMERASE
1yve	SPINACH KETOL-ACID REDUCTOISOMERASE IN COMPLEX WITH NADPH AND IPOHA
3fr7	RICE KETOL-ACID REDUCTOISOMERASE WITH MG2+
3fr8	RICE KETOL-ACID REDUCTOISOMERASE WITH NADPH AND MG2+

Description

Compounds

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Chains, Units

Ligands, Modified Residues, Ions (4, 17)

Sites (15, 15)

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

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