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Title :   2.4 A RESOLUTION CRYSTAL STRUCTURE OF BORRELIA BURGDORFERI INOSINE 5'-MONPHOSPHATE DEHYDROGENASE IN COMPLEX WITH A SULFATE ION

Authors :   F. M. Mcmillan, M. Cahoon, A. White, L. Hedstrom, G. A. Petsko, D. Ringe

Date :   01 Feb 00 (Deposition) - 29 Mar 00 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.40

Chains :   Asym. Unit : A,B
Biol. Unit 1: A  (4x)
Biol. Unit 2: B  (4x)
Biol. Unit 3: A (4x),B (4x)

Keywords :   Alpha-Beta Barrel, Tim Barrel, Impdh, Imp Dehydrogenase, Loop-6, Purine Biosynthesis, Oxidoreductase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   F. M. Mcmillan, M. Cahoon, A. White, L. Hedstrom, G. A. Petsko, D. Ringe
Crystal Structure At 2. 4 A Resolution Of Borrelia Burgdorferi Inosine 5'-Monophosphate Dehydrogenase: Evidenc Of A Substrate-Induced Hinged-Lid Motion By Loop 6.
Biochemistry V. 39 4533 2000
PubMed-ID: 10758003 | Reference-DOI: 10.1021/BI992645L

Molecule 1 - INOSINE 5'-MONOPHOSPHATE DEHYDROGENASE
	Chains	:	A, B
	EC Number	:	1.1.1.205
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Expression System Vector	:	CP26
	Expression System Vector Type	:	PLASMID
	Organism Common	:	LYME DISEASE SPIROCHETE
	Organism Scientific	:	BORRELIA BURGDORFERI
	Organism Taxid	:	139

		1	2
Asymmetric Unit	:	A	B
Biological Unit 1 (4x)	:	A
Biological Unit 2 (4x)	:		B
Biological Unit 3 (4x)	:	A (4x)	B (4x)

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (1, 2)

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

Biological Unit 1 (1, 4)

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

Biological Unit 2 (1, 4)

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

Biological Unit 3 (1, 4)

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

Asymmetric Unit (2, 2)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	GLY A:263 , GLY A:264 , GLY A:285 , ASN A:286 , HOH A:735	BINDING SITE FOR RESIDUE SO4 A 600
2	AC2	SOFTWARE	MET B:50 , GLY B:263 , GLY B:264 , GLY B:285 , ASN B:286 , HOH B:754	BINDING SITE FOR RESIDUE SO4 B 601

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

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

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

Asymmetric Unit (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	IMP_DH_GMP_RED	PS00487	IMP dehydrogenase / GMP reductase signature.	IMDH_BORBU	219-231	2	A:219-231 B:219-231

Biological Unit 1 (1, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	IMP_DH_GMP_RED	PS00487	IMP dehydrogenase / GMP reductase signature.	IMDH_BORBU	219-231	4	A:219-231 -

Biological Unit 2 (1, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	IMP_DH_GMP_RED	PS00487	IMP dehydrogenase / GMP reductase signature.	IMDH_BORBU	219-231	4	- B:219-231

Biological Unit 3 (1, 8)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	IMP_DH_GMP_RED	PS00487	IMP dehydrogenase / GMP reductase signature.	IMDH_BORBU	219-231	8	A:219-231 B:219-231

(no "Exon" information available for 1EEP)

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:314
 aligned with IMDH_BORBU | P49058 from UniProtKB/Swiss-Prot  Length:404

    Alignment length:388
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302       312       322       332       342       352       362       372       382        
           IMDH_BORBU     3 NKITKEALTFDDVSLIPRKSSVLPSEVSLKTQLTKNISLNIPFLSSAMDTVTESQMAIAIAKEGGIGIIHKNMSIEAQRKEIEKVKTYKFQKTINTNGDTNEQKPEIFTAKQHLEKSDAYKNAEHKEDFPNACKDLNNKLRVGAAVSIDIDTIERVEELVKAHVDILVIDSAHGHSTRIIELIKKIKTKYPNLDLIAGNIVTKEAALDLISVGADCLKVGIGPGSICTTRIVAGVGVPQITAICDVYEACNNTNICIIADGGIRFSGDVVKAIAAGADSVMIGNLFAGTKESPSEEIIYNGKKFKSYVGMGSISAMKRGSKSRYFQLENNEPKKLVPEGIEGMVPYSGKLKDILTQLKGGLMSGMGYLGAATISDLKINSKFVKISHS 390
               SCOP domains d1eepa_ A: Inosine monophosphate dehydrogenase (IMPDH)                                                                                                                                                                                                                                                                                                                                               SCOP domains
               CATH domains 1eepA00 A:3-390 Aldolase class I                                                                                                                                                                                                                                                                                                                                                                     CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ........hhh.eee.......hhhhh...ee.....ee...eee.......hhhhhhhhhhhh.eeee....hhhhhhhhhhhhhh..--------------------------------------...............eeee....hhhhhhhhhhhh...eeee......hhhhhhhhhhhhhhh...eeeeeee.hhhhhhhhhh....eeee.......hhhhhhhh...hhhhhhhhhhhhhh....eeeee....hhhhhhhhhhhh..eeeehhhhhh.......eeee..eeee.------------------------------------.ee...hhhhhhhhhhhhhhhhhhhhh..hhhhhhhh..eee.... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------IMP_DH_GMP_RE--------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1eep A   3 NKITKEALTFDDVSLIPRKSSVLPSEVSLKTQLTKNISLNIPFLSSAMDTVTESQMAIAIAKEGGIGIIHKNMSIEAQRKEIEKVKTYK--------------------------------------DFPNACKDLNNKLRVGAAVSIDIDTIERVEELVKAHVDILVIDSAHGHSTRIIELIKKIKTKYPNLDLIAGNIVTKEAALDLISVGADCLKVGIGPGSICTTRIVAGVGVPQITAICDVYEACNNTNICIIADGGIRFSGDVVKAIAAGADSVMIGNLFAGTKESPSEEIIYNGKKFKS------------------------------------MVPYSGKLKDILTQLKGGLMSGMGYLGAATISDLKINSKFVKISHS 390
                                    12        22        32        42        52        62        72        82        |-         -         -         -       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302     |   -         -         -         -  |    352       362       372       382        
                                                                                                                   91                                    130                                                                                                                                                                               308                                  345

Chain B from PDB  Type:PROTEIN  Length:314
 aligned with IMDH_BORBU | P49058 from UniProtKB/Swiss-Prot  Length:404

    Alignment length:387
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302       312       322       332       342       352       362       372       382       
           IMDH_BORBU     3 NKITKEALTFDDVSLIPRKSSVLPSEVSLKTQLTKNISLNIPFLSSAMDTVTESQMAIAIAKEGGIGIIHKNMSIEAQRKEIEKVKTYKFQKTINTNGDTNEQKPEIFTAKQHLEKSDAYKNAEHKEDFPNACKDLNNKLRVGAAVSIDIDTIERVEELVKAHVDILVIDSAHGHSTRIIELIKKIKTKYPNLDLIAGNIVTKEAALDLISVGADCLKVGIGPGSICTTRIVAGVGVPQITAICDVYEACNNTNICIIADGGIRFSGDVVKAIAAGADSVMIGNLFAGTKESPSEEIIYNGKKFKSYVGMGSISAMKRGSKSRYFQLENNEPKKLVPEGIEGMVPYSGKLKDILTQLKGGLMSGMGYLGAATISDLKINSKFVKISH 389
               SCOP domains d1eepb_ B: Inosine monophosphate dehydrogenase (IMPDH)                                                                                                                                                                                                                                                                                                                                              SCOP domains
               CATH domains 1eepB00 B:3-389 Aldolase class I                                                                                                                                                                                                                                                                                                                                                                    CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ............eee.......hhhhh...eeee..eee...eee.......hhhhhhhhhhhh.eeee....hhhhhhhhhhhhhh.---------------------------------------...............eeee....hhhhhhhhhhhh...eeee......hhhhhhhhhhhhhhh...eeeeeee.hhhhhhhhhhh...eeee.......hhhhhhh....hhhhhhhhhhhhh.....eeeee....hhhhhhhhhhh...eeee.............eee....eee..----------------------------------..ee...hhhhhhhhhhhhhhhhhhhhh..hhhhhhhh..eee... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------IMP_DH_GMP_RE-------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1eep B   3 NKITKEALTFDDVSLIPRKSSVLPSEVSLKTQLTKNISLNIPFLSSAMDTVTESQMAIAIAKEGGIGIIHKNMSIEAQRKEIEKVKTY---------------------------------------DFPNACKDLNNKLRVGAAVSIDIDTIERVEELVKAHVDILVIDSAHGHSTRIIELIKKIKTKYPNLDLIAGNIVTKEAALDLISVGADCLKVGIGPGSICTTRIVAGVGVPQITAICDVYEACNNTNICIIADGGIRFSGDVVKAIAAGADSVMIGNLFAGTKESPSEEIIYNGKKFKSY----------------------------------GMVPYSGKLKDILTQLKGGLMSGMGYLGAATISDLKINSKFVKISH 389
                                    12        22        32        42        52        62        72        82       | -         -         -         -       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302      |  -         -         -         - |     352       362       372       382       
                                                                                                                  90                                     130                                                                                                                                                                                309                                344

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: Alpha-Beta Barrel (2994)

Topology: TIM Barrel (2806)

Homologous Superfamily: Aldolase class I (887)

Lyme disease spirochete (Borrelia burgdorferi) (1)

1a	1eepA00	A:3-390
1b	1eepB00	B:3-389

(no "Pfam Domain" information available for 1EEP)

Asymmetric Unit(hide GO term definitions)

Chain A,B (IMDH_BORBU | P49058)

molecular function
	GO:0003938	IMP dehydrogenase activity	Catalysis of the reaction: inosine 5'-phosphate + NAD+ + H2O = xanthosine 5'-phosphate + NADH + H+.
	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:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
	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:0006177	GMP biosynthetic process	The chemical reactions and pathways resulting in the formation of GMP, guanosine monophosphate.
	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:0006164	purine nucleotide biosynthetic process	The chemical reactions and pathways resulting in the formation of a purine nucleotide, a compound consisting of nucleoside (a purine base linked to a deoxyribose or ribose sugar) esterified with a phosphate group at either the 3' or 5'-hydroxyl group of the sugar.

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