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Title :   INOSINE MONOPHOSPHATE DEHYDROGENASE (IMPDH; EC 1.1.1.205) FROM STREPTOCOCCUS PYOGENES

Authors :   R. Zhang, G. Evans, F. J. Rotella, E. M. Westbrook, D. Beno, E. Huberman, A. Joachimiak, F. R. Collart

Date :   29 Mar 99 (Deposition) - 29 Mar 00 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.90

Chains :   Asym. Unit : A
Biol. Unit 1: A  (4x)
Biol. Unit 2: A  (8x)

Keywords :   Impdh, Dehydrogenase, Cbs Domains, Oxidoreductase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   R. Zhang, G. Evans, F. J. Rotella, E. M. Westbrook, D. Beno, E. Huberman A. Joachimiak, F. R. Collart
Characteristics And Crystal Structure Of Bacterial Inosine-5'-Monophosphate Dehydrogenase.
Biochemistry V. 38 4691 1999
PubMed-ID: 10200156 | Reference-DOI: 10.1021/BI982858V

Molecule 1 - INOSINE MONOPHOSPHATE DEHYDROGENASE
	Chains	:	A
	EC Number	:	1.1.1.205
	Engineered	:	YES
	Expression System	:	STREPTOCOCCUS PYOGENES
	Expression System Strain	:	ESCHERICHIA COLI
	Expression System Taxid	:	1314
	Fragment	:	CATALYTIC DOMAIN, CBS DOMAIN
	Organism Scientific	:	STREPTOCOCCUS PYOGENES
	Organism Taxid	:	1314

		1
Asymmetric Unit	:	A
Biological Unit 1 (4x)	:	A
Biological Unit 2 (8x)	:	A

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (2, 14)

No.	Name	Count	Type	Full Name
1	IMP	1	Ligand/Ion	INOSINIC ACID
2	MSE	13	Mod. Amino Acid	SELENOMETHIONINE

Biological Unit 1 (2, 56)

No.	Name	Count	Type	Full Name
1	IMP	4	Ligand/Ion	INOSINIC ACID
2	MSE	52	Mod. Amino Acid	SELENOMETHIONINE

Biological Unit 2 (2, 112)

No.	Name	Count	Type	Full Name
1	IMP	8	Ligand/Ion	INOSINIC ACID
2	MSE	104	Mod. Amino Acid	SELENOMETHIONINE

Asymmetric Unit (2, 2)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	ALA A:51 , GLY A:307 , SER A:308 , ILE A:309 , CYS A:310 , ASP A:343 , GLY A:345 , MSE A:364 , GLY A:366 , SER A:367 , TYR A:390 , GLY A:392 , MSE A:393 , GLY A:394 , GLU A:421 , GLY A:422 , HOH A:580 , HOH A:636	BINDING SITE FOR RESIDUE IMP A 500
2	ASC	AUTHOR	CYS A:310	ACTIVE SITE CYSTEINE

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

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

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

Asymmetric Unit (2, 3)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	CBS	PS51371	CBS domain profile.	IMDH_STRPY	97-155 159-219	2	A:97-155 A:159-219
2	IMP_DH_GMP_RED	PS00487	IMP dehydrogenase / GMP reductase signature.	IMDH_STRPY	300-312	1	A:300-312

Biological Unit 1 (2, 12)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	CBS	PS51371	CBS domain profile.	IMDH_STRPY	97-155 159-219	8	A:97-155 A:159-219
2	IMP_DH_GMP_RED	PS00487	IMP dehydrogenase / GMP reductase signature.	IMDH_STRPY	300-312	4	A:300-312

Biological Unit 2 (2, 24)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	CBS	PS51371	CBS domain profile.	IMDH_STRPY	97-155 159-219	16	A:97-155 A:159-219
2	IMP_DH_GMP_RED	PS00487	IMP dehydrogenase / GMP reductase signature.	IMDH_STRPY	300-312	8	A:300-312

(no "Exon" information available for 1ZFJ)

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:477
 aligned with IMDH_STRPY | P0C0H6 from UniProtKB/Swiss-Prot  Length:493

    Alignment length:491
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431       441       451       461       471       481       491 
           IMDH_STRPY     2 SNWDTKFLKKGYTFDDVLLIPAESHVLPNEVDLKTKLADNLTLNIPIITAAMDTVTGSKMAIAIARAGGLGVIHKNMSITEQAEEVRKVKRSENGVIIDPFFLTPEHKVSEAEELMQRYRISGVPIVETLANRKLVGIITNRDMRFISDYNAPISEHMTSEHLVTAAVGTDLETAERILHEHRIEKLPLVDNSGRLSGLITIKDIEKVIEFPHAAKDEFGRLLVAAAVGVTSDTFERAEALFEAGADAIVIDTAHGHSAGVLRKIAEIRAHFPNRTLIAGNIATAEGARALYDAGVDVVKVGIGPGSICTTRVVAGVGVPQVTAIYDAAAVAREYGKTIIADGGIKYSGDIVKALAAGGNAVMLGSMFAGTDEAPGETEIYQGRKFKTYRGMGSIAAMKKGSSDRYFQGSVNEANKLVPEGIEGRVAYKGAASDIVFQMLGGIRSGMGYVGAGDIQELHENAQFVEMSGAGLIESHPHDVQITNEAPNYSV 492
               SCOP domains d1zfja1 A:2-94,A:221-492 Inosine monophosphate dehydrogenase (IMPDH)                         d1zfja4 A:95-220 Type II inosine monophosphate dehydrogenase CBS domains                                                      d1zfja1 A:2-94,A:221-492 Inosine monophosphate dehydrogenase (IMPDH)                                                                                                                                                                                                             SCOP domains
               CATH domains 1zfjA00 A:2-492 Aldolase class I                                                                                                                                                                                                                                                                                                                                                                                                                                                                            CATH domains
           Pfam domains (1) ---------IMPDH-1zfjA01 A:11-479                                                                                                                                                                                                                                                                                                                                                                                                                                                               ------------- Pfam domains (1)
           Pfam domains (2) ---------------------------------------------------------------------------------------------------------------------------------------------------------CBS-1zfjA02 A:155-211                                    ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains (2)
           Pfam domains (3) ---------------------------------------------------------------------------------------------------------------------------------------------------------CBS-1zfjA03 A:155-211                                    ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains (3)
         Sec.struct. author .hhhh........hhh...........hhh....eeee..eee..............hhhhhhhhh............hhhhhhhhhhhhhh.........eee....hhhhhhhhhh....eeeee.......eeeeeehhhhhh..................eee....hhhhhhhhhh....eeeee.....eeeeeehhhhhhhhh..............eeee.....hhhhhhhhhhh...eeee.......hhhhhhhhhhhhh.....eeeeee..hhhhhhhhh....eeee.........hhhh......hhhhhhhhhhhhhh...eeee......hhhhhhhhh.....................eeee..eeeeeee..........--------------........eeeee....hhhhhhhhhhhhhhhhhhh....hhhhhhh.......hhhhhhh................ Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------------------------------------CBS  PDB: A:97-155 UniProt: 97-155                         ---CBS  PDB: A:159-219 UniProt: 159-219                         --------------------------------------------------------------------------------IMP_DH_GMP_RE------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1zfj A   2 SNWDTKFLKKGYTFDDVLLIPAESHVLPNEVDLKTKLADNLTLNIPIITAAmDTVTGSKmAIAIARAGGLGVIHKNmSITEQAEEVRKVKRSENGVIIDPFFLTPEHKVSEAEELmQRYRISGVPIVETLANRKLVGIITNRDmRFISDYNAPISEHmTSEHLVTAAVGTDLETAERILHEHRIEKLPLVDNSGRLSGLITIKDIEKVIEFPHAAKDEFGRLLVAAAVGVTSDTFERAEALFEAGADAIVIDTAHGHSAGVLRKIAEIRAHFPNRTLIAGNIATAEGARALYDAGVDVVKVGIGPGSICTTRVVAGVGVPQVTAIYDAAAVAREYGKTIIADGGIKYSGDIVKALAAGGNAVmLGSmFAGTDEAPGETEIYQGRKYKTYRGmGSIAAmKK--------------NKLVPEGIEGRVAYKGAASDIVFQmLGGIRSGmGYVGAGDIQELHENAQFVEmSGAGLIESHPHDVQITNEAPNYSV 492
                                    11        21        31        41        51 |      61        71      | 81        91       101       111     | 121       131       141   |   151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361  |   |371       381       391 |     401         -    |  421       431       441      |451       461      |471       481       491 
                                                                              53-MSE  61-MSE           78-MSE                                117-MSE                     145-MSE       159-MSE                                                                                                                                                                                                      364-MSE                      393-MSE | |            416                     440-MSE 448-MSE             468-MSE                    
                                                                                                                                                                                                                                                                                                                                                                                                        368-MSE                        399-MSE                                                                                         
                                                                                                                                                                                                                                                                                                                                                                                                                                         401

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)

Streptococcus pyogenes. Organism_taxid: 1314. (2)

1zfjA00

A:2-492

Asymmetric Unit

Clans(

)

Families(

)

Organisms( (-)

)

Clan: TIM_barrel (694)

Family: IMPDH (16)

Streptococcus pyogenes (1)

IMPDH-1zfjA01

A:11-479

Clan: no clan defined [family: CBS] (51)

Family: CBS (51)

Streptococcus pyogenes (1)

2a	CBS-1zfjA02	A:155-211
2b	CBS-1zfjA03	A:155-211

Asymmetric Unit(hide GO term definitions)

Chain A (IMDH_STRPY | P0C0H6)

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:0000166	nucleotide binding	Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
	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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