2F1F - JenaLib

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Title :   CRYSTAL STRUCTURE OF THE REGULATORY SUBUNIT OF ACETOHYDROXYACID SYNTHASE ISOZYME III FROM E. COLI

Authors :   A. Kaplun, M. Vyazmensky, Z. Barak, D. M. Chipman, B. Shaanan

Date :   14 Nov 05 (Deposition) - 24 Jan 06 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.75

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

Keywords :   Ferredoxin Fold, Act Domain, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   A. Kaplun, M. Vyazmensky, Y. Zherdev, I. Belenky, A. Slutzker, S. Mendel, Z. Barak, D. M. Chipman, B. Shaanan
Structure Of The Regulatory Subunit Of Acetohydroxyacid Synthase Isozyme Iii From Escherichia Coli.
J. Mol. Biol. V. 357 951 2006
PubMed-ID: 16458324 | Reference-DOI: 10.1016/J.JMB.2005.12.077
(for further references see the PDB file header)

Molecule 1 - ACETOLACTATE SYNTHASE ISOZYME III SMALL SUBUNIT
	Chains	:	A, B
	EC Number	:	2.2.1.6
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PUH
	Expression System Strain	:	XL-BLUE MRF'
	Expression System Taxid	:	562
	Expression System Vector Type	:	PUHE24
	Gene	:	ILVH, BRNP
	Organism Scientific	:	ESCHERICHIA COLI
	Organism Taxid	:	562
	Synonym	:	AHAS-III, ACETOHYDROXY-ACID SYNTHASE III SMALL SUBUNIT, ALS-III

		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 (3, 8)

No.	Name	Count	Type	Full Name
1	1PE	1	Ligand/Ion	PENTAETHYLENE GLYCOL
2	MG	6	Ligand/Ion	MAGNESIUM ION
3	P33	1	Ligand/Ion	3,6,9,12,15,18-HEXAOXAICOSANE-1,20-DIOL

Biological Unit 1 (2, 2)

No.	Name	Count	Type	Full Name
1	1PE	1	Ligand/Ion	PENTAETHYLENE GLYCOL
2	MG	-1	Ligand/Ion	MAGNESIUM ION
3	P33	1	Ligand/Ion	3,6,9,12,15,18-HEXAOXAICOSANE-1,20-DIOL

Biological Unit 2 (2, 8)

No.	Name	Count	Type	Full Name
1	1PE	4	Ligand/Ion	PENTAETHYLENE GLYCOL
2	MG	-1	Ligand/Ion	MAGNESIUM ION
3	P33	4	Ligand/Ion	3,6,9,12,15,18-HEXAOXAICOSANE-1,20-DIOL

Asymmetric Unit (8, 8)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	HOH A:803 , HOH A:804 , HOH A:805	BINDING SITE FOR RESIDUE MG A 801
2	AC2	SOFTWARE	HOH B:903 , HOH B:904 , HOH B:905	BINDING SITE FOR RESIDUE MG B 901
3	AC3	SOFTWARE	MG B:810 , HOH B:906	BINDING SITE FOR RESIDUE MG B 805
4	AC4	SOFTWARE	MG B:805	BINDING SITE FOR RESIDUE MG B 810
5	AC5	SOFTWARE	GLU A:10 , ILE A:144 , VAL A:145 , HOH A:863 , HOH A:918	BINDING SITE FOR RESIDUE MG A 802
6	AC6	SOFTWARE	GLU B:10 , ASP B:69 , ASP B:140 , HOH B:956	BINDING SITE FOR RESIDUE MG B 902
7	AC7	SOFTWARE	ARG A:84 , ARG A:109 , ARG A:157 , 1PE A:601 , HOH A:853 , ILE B:107 , PHE B:108 , GLN B:111 , ILE B:112 , ILE B:113 , LYS B:130 , HOH B:945 , HOH B:1011 , HOH B:1019 , HOH B:1022	BINDING SITE FOR RESIDUE P33 B 501
8	AC8	SOFTWARE	ILE A:107 , ARG A:109 , ILE A:112 , ILE A:113 , LYS A:130 , ARG B:157 , P33 B:501	BINDING SITE FOR RESIDUE 1PE A 601

(no "SS Bond" information available for 2F1F)

Asymmetric Unit

No.	Residues
1	Gly B:79	-	Ala B:80

(no "SAP(SNP)/Variant" information available for 2F1F)

Asymmetric Unit (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	ACT	PS51671	ACT domain profile.	ILVH_ECOLI	4-78	2	A:4-78 B:4-78

Biological Unit 1 (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	ACT	PS51671	ACT domain profile.	ILVH_ECOLI	4-78	2	A:4-78 B:4-78

Biological Unit 2 (1, 8)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	ACT	PS51671	ACT domain profile.	ILVH_ECOLI	4-78	8	A:4-78 B:4-78

(no "Exon" information available for 2F1F)

Asymmetric Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
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	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:163
 aligned with ILVH_ECOLI | P00894 from UniProtKB/Swiss-Prot  Length:163

    Alignment length:163
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160   
           ILVH_ECOLI     1 MRRILSVLLENESGALSRVIGLFSQRGYNIESLTVAPTDDPTLSRMTIQTVGDEKVLEQIEKQLHKLVDVLRVSELGQGAHVEREIMLVKIQASGYGRDEVKRNTEIFRGQIIDVTPSLYTVQLAGTSGKLDAFLASIRDVAKIVEVARSGVVGLSRGDKIMR 163
               SCOP domains -d2f1fa1 A:2-77 Acetolactate synthase small subunit, IlvH                    d2f1fa2 A:78-163 Acetolactate synthase small subunit, IlvH                             SCOP domains
               CATH domains 2f1fA01 A:1-79  [code=3.30.70.260, no name defined]                            ------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeeeeee...hhhhhhhhhhhh......eeeeee.....eeeeeeeee.hhhhhhhhhhhhhhh..eeeeee.hhh.eeeeeeeeeeee..hhhhhhhhhhhhhh..eeeee...eeeeeeeehhhhhhhhhhhhh...eeeeeee...eeee....... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---ACT  PDB: A:4-78 UniProt: 4-78                                             ------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2f1f A   1 ARRILSVLLENESGALSRVIGLFSQRGYNIESLTVAPTDDPTLSRMTIQTVGDEKVLEQIEKQLHKLVDVLRVSELGQGAHVEREIMLVKIQASGYGRDEVKRNTEIFRGQIIDVTPSLYTVQLAGTSGKLDAFLASIRDVAKIVEVARSGVVGLSRGDKIMR 163
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160

Chain B from PDB  Type:PROTEIN  Length:158
 aligned with ILVH_ECOLI | P00894 from UniProtKB/Swiss-Prot  Length:163

    Alignment length:158
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150        
           ILVH_ECOLI     1 MRRILSVLLENESGALSRVIGLFSQRGYNIESLTVAPTDDPTLSRMTIQTVGDEKVLEQIEKQLHKLVDVLRVSELGQGAHVEREIMLVKIQASGYGRDEVKRNTEIFRGQIIDVTPSLYTVQLAGTSGKLDAFLASIRDVAKIVEVARSGVVGLSRG 158
               SCOP domains d2f1fb1 B:1-77 Acetolactate synthase small subunit, IlvH                     d2f1fb2 B:78-158 Acetolactate synthase small subunit, IlvH                        SCOP domains
               CATH domains 2f1fB01 B:1-79  [code=3.30.70.260, no name defined]                            ------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeeeeee...hhhhhhhhhhhh....eeeeeeee.....eeeeeeeee...hhhhhhhhhhhh...eeeeee.....eeeeeeeeeeee.hhhhhhhhhhhhhhhh.eeeeee..eeeeeeeehhhhhhhhhhhhh....eeeeee...eeee.. Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---ACT  PDB: B:4-78 UniProt: 4-78                                             -------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2f1f B   1 ARRILSVLLENESGALSRVIGLFSQRGYNIESLTVAPTDDPTLSRMTIQTVGDEKVLEQIEKQLHKLVDVLRVSELGQGAHVEREIMLVKIQASGYGRDEVKRNTEIFRGQIIDVTPSLYTVQLAGTSGKLDAFLASIRDVAKIVEVARSGVVGLSRG 158
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
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	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(

)

Folds(

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Superfamilies( (-)

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Families(

)

Protein Domains( (-)

)

Organisms( (-)

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

Fold: Ferredoxin-like (1795)

Superfamily: ACT-like (63)

Family: IlvH-like (3)

Protein domain: Acetolactate synthase small subunit, IlvH (3)

Escherichia coli [TaxId: 562] (1)

1a	d2f1fa1	A:2-77
1b	d2f1fa2	A:78-163
1c	d2f1fb1	B:1-77
1d	d2f1fb2	B:78-158

Asymmetric Unit

Classes(

)

Architectures( (-)

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Topologies( (-)

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Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: 2-Layer Sandwich (8480)

Topology: Alpha-Beta Plaits (1688)

Homologous Superfamily: [code=3.30.70.260, no name defined] (34)

Escherichia coli. Organism_taxid: 562. (7)

1a	2f1fA01	A:1-79
1b	2f1fB01	B:1-79

(no "Pfam Domain" information available for 2F1F)

Asymmetric Unit(hide GO term definitions)

Chain A,B (ILVH_ECOLI | P00894)

molecular function
	GO:0003984	acetolactate synthase activity	Catalysis of the reaction: 2 pyruvate = 2-acetolactate + CO2.
	GO:0016597	amino acid binding	Interacting selectively and non-covalently with an amino acid, organic acids containing one or more amino substituents.
	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:0008152	metabolic process	The chemical reactions and pathways, including anabolism and catabolism, by which living organisms transform chemical substances. Metabolic processes typically transform small molecules, but also include macromolecular processes such as DNA repair and replication, and protein synthesis and degradation.
	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
		Gly B:79 - Ala B:80	[ RasMol ]

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Description

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Ligands, Modified Residues, Ions (3, 8)

Sites (8, 8)

SS Bonds (0, 0)

Cis Peptide Bonds (1, 1)

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