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Title :   INOSINE MONOPHOSPHATE DEHYDROGENASE (IMPDH) FROM TRITRICHOMONAS FOETUS WITH RVP AND MOA BOUND

Authors :   G. L. Prosise, J. Wu, H. Luecke

Date :   08 Aug 02 (Deposition) - 14 Jan 03 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.15

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

Keywords :   Alpha Beta Barrel, Oxidoreductase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   G. L. Prosise, J. Wu, H. Luecke
Crystal Structure Of Tritrichomonas Foetus Inosine Monophosphate Dehydrogenase In Complex With The Inhibitor Ribavirin Monophosphate Reveals A Catalysis-Dependent Ion-Binding Site
J. Biol. Chem. V. 277 50654 2002
PubMed-ID: 12235158 | Reference-DOI: 10.1074/JBC.M208330200

Molecule 1 - INOSINE-5'-MONOPHOSPHATE DEHYDROGENASE
	Chains	:	A
	EC Number	:	1.1.1.205
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PBACE
	Expression System Strain	:	H712
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Gene	:	IMPDH
	Organism Scientific	:	TRITRICHOMONAS FOETUS
	Organism Taxid	:	5724
	Synonym	:	IMP DEHYDROGENASE, IMPDH

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

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (4, 4)

No.	Name	Count	Type	Full Name
1	K	1	Ligand/Ion	POTASSIUM ION
2	MOA	1	Ligand/Ion	MYCOPHENOLIC ACID
3	NA	1	Ligand/Ion	SODIUM ION
4	RVP	1	Ligand/Ion	RIBAVIRIN MONOPHOSPHATE

Biological Unit 1 (2, 8)

No.	Name	Count	Type	Full Name
1	K	-1	Ligand/Ion	POTASSIUM ION
2	MOA	4	Ligand/Ion	MYCOPHENOLIC ACID
3	NA	-1	Ligand/Ion	SODIUM ION
4	RVP	4	Ligand/Ion	RIBAVIRIN MONOPHOSPHATE

Asymmetric Unit (4, 4)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	GLY A:314 , GLY A:315 , GLY A:316 , CYS A:319 , GLU A:485 , GLY A:486 , GLY A:487 , HIS A:489	BINDING SITE FOR RESIDUE NA A 901
2	AC2	SOFTWARE	GLY A:20 , SER A:22 , ASP A:264 , PHE A:266 , ASN A:460	BINDING SITE FOR RESIDUE K A 900
3	AC3	SOFTWARE	ALA A:57 , GLY A:316 , SER A:317 , ILE A:318 , CYS A:319 , ASP A:358 , GLY A:359 , GLY A:360 , MET A:379 , GLY A:381 , ARG A:382 , TYR A:405 , GLY A:407 , GLU A:408 , GLY A:409 , GLU A:431 , GLY A:432 , MOA A:600 , HOH A:911 , HOH A:922 , HOH A:934 , HOH A:994	BINDING SITE FOR RESIDUE RVP A 602
4	AC4	SOFTWARE	ASP A:261 , SER A:262 , SER A:263 , ASN A:291 , GLY A:312 , ILE A:313 , GLY A:314 , CYS A:319 , GLU A:408 , RVP A:602	BINDING SITE FOR RESIDUE MOA A 600

Asymmetric Unit

No.	Residues
1	A:26	-	A:459

Asymmetric Unit

No.	Residues
1	Gly A:290	-	Asn A:291

(no "SAP(SNP)/Variant" information available for 1ME7)

Asymmetric Unit (2, 3)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	CBS	PS51371	CBS domain profile.	IMDH_TRIFO	167-228 103-163	2	A:220-228 A:103-107
2	IMP_DH_GMP_RED	PS00487	IMP dehydrogenase / GMP reductase signature.	IMDH_TRIFO	309-321	1	A:309-321

Biological Unit 1 (2, 12)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	CBS	PS51371	CBS domain profile.	IMDH_TRIFO	167-228 103-163	8	A:220-228 A:103-107
2	IMP_DH_GMP_RED	PS00487	IMP dehydrogenase / GMP reductase signature.	IMDH_TRIFO	309-321	4	A:309-321

(no "Exon" information available for 1ME7)

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:365
 aligned with IMDH_TRIFO | P50097 from UniProtKB/Swiss-Prot  Length:503

    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_TRIFO     2 AKYYNEPCHTFNEYLLIPGLSTVDCIPSNVNLSTPLVKFQKGQQSEINLKIPLVSAIMQSVSGEKMAIALAREGGISFIFGSQSIESQAAMVHAVKNFKAGFVVSDSNVKPDQTFADVLAISQRTTHNTVAVTDDGTPHGVLLGLVTQRDYPIDLTQTETKVSDMMTPFSKLVTAHQDTKLSEANKIIWEKKLNALPIIDDDQHLRYIVFRKDYDRSQVCHNELVDSQKRYLVGAGINTRDFRERVPALVEAGADVLCIDSSDGFSEWQKITIGWIREKYGDKVKVGAGNIVDGEGFRYLADAGADFIKIGIGGGSICITREQKGIGRGQATAVIDVVAERNKYFEETGIYIPVCSDGGIVYDYHMTLALAMGADFIMLGRYFARFEESPTRKVTINGSVMKEYWGEGSSRARNWQRYDLGGKQKLSFEEGVDSYVPYAGKLKDNVEASLNKVKSTMCNCGALTIPQLQSKAKITLVSSVSIVEGGAHDVI 492
               SCOP domains d1me7a1 A:2-107,A:220-492 Inosine monophosphate dehydrogenase (IMPDH)                                                                                                                                                     d1me7a1 A:2-107,A:220-492 Inosine monophosphate dehydrogenase (IMPDH)                                                                                                                                                                                                             SCOP domains
               CATH domains 1me7A00 A:2-492 Aldolase class I                                                                                                                                                                                                                                                                                                                                                                                                                                                                            CATH domains
               Pfam domains ------IMPDH-1me7A01 A:8-489                                                                                                                                                                                                                                                                                                                                                                                                                                                                             --- Pfam domains
         Sec.struct. author .........hhh.eeee........hhhhh...ee...ee.......ee...eee.......hhhhhhhhhhh..eeee....hhhhhhhhhhhhhh.........----------------------------------------------------------------------------------------------------------------...............eeee...hhhhhhhhhhhh...eeee......hhhhhhhhhhhhhhhhhhh.eeeeee.hhhhhhhhhhh...eeee..................hhhhhhhhhhhhhhhhhhhhhee..eeee....hhhhhhhhhhh...eeeehhhhhh.......eeee..eeeeeee..........--------------...eeeee...hhhhhhhhhhhhhhhhhhhh...hhhhhhhhheeee............... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------------------------------------------CBS  PDB: A:103-107 UniProt: 103-163                         ---CBS  PDB: A:220-228 UniProt: 167-228                          --------------------------------------------------------------------------------IMP_DH_GMP_RE--------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1me7 A   2 AKYYNEPCHTFNEYLLIPGLSTVDCIPSNVNLSTPLVKFQKGQQSEINLKIPLVSAIMQSVSGEKMAIALAREGGISFIFGSQSIESQAAMVHAVKNFKAGFVVSD----------------------------------------------------------------------------------------------------------------VCHNELVDSQKRYLVGAGINTRDFRERVPALVEAGADVLCIDSSDGFSEWQKITIGWIREKYGDKVKVGAGNIVDGEGFRYLADAGADFIKIGIGGGSICITREQKGIGRGQATAVIDVVAERNKYFEETGIYIPVCSDGGIVYDYHMTLALAMGADFIMLGRYFARFEESPTRKVTINGSVMKEYWGEGSSRARNW--------------EGVDSYVPYAGKLKDNVEASLNKVKSTMCNCGALTIPQLQSKAKITLVSSVSIVEGGAHDVI 492
                                    11        21        31        41        51        61        71        81        91       101     |   -         -         -         -         -         -         -         -         -         -         -       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411    |    -       431       441       451       461       471       481       491 
                                                                                                                                   107                                                                                                              220                                                                                                                                                                                                 416            431

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(

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Folds(

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Superfamilies( (-)

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Families(

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Protein Domains( (-)

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Organisms( (-)

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Class: Alpha and beta proteins (a/b) (23833)

Fold: TIM beta/alpha-barrel (3956)

Superfamily: Inosine monophosphate dehydrogenase (IMPDH) (29)

Family: Inosine monophosphate dehydrogenase (IMPDH) (18)

Protein domain: Inosine monophosphate dehydrogenase (IMPDH) (18)

Tritrichomonas foetus [TaxId: 5724] (9)

d1me7a1

A:2-107,A:220-492

Asymmetric Unit

Classes(

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Architectures( (-)

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Topologies( (-)

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Homologous Superfamilies( (-)

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Organisms( (-)

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Class: Alpha Beta (26913)

Architecture: Alpha-Beta Barrel (2994)

Topology: TIM Barrel (2806)

Homologous Superfamily: Aldolase class I (887)

Tritrichomonas foetus. Organism_taxid: 5724. (8)

1me7A00

A:2-492

Asymmetric Unit

Clans(

)

Families(

)

Organisms( (-)

)

Clan: TIM_barrel (694)

Family: IMPDH (16)

Tritrichomonas foetus (Trichomonas foetus) (7)

IMPDH-1me7A01

A:8-489

Asymmetric Unit(hide GO term definitions)

Chain A (IMDH_TRIFO | P50097)

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.
cellular component
	GO:0005737	cytoplasm	All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

Asymmetric Unit
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	Cis Peptide Bonds
		Gly A:290 - Asn A:291	[ RasMol ]

Biological Unit
	Complete Structure
		Biological Unit 1	[ Jena3D ]

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	1.1.1.205
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UniProtKB/Swiss-Prot
	IMDH_TRIFO \| P50097	:	1ak5 1lrt 1me8 1me9 1meh 1mei 1mew 1pvn

1ak5	INOSINE MONOPHOSPHATE DEHYDROGENASE (IMPDH) FROM TRITRICHOMONAS FOETUS
1me8	1ME8 CONTAINS THE SAME PROTEIN WITH RVP BOUND
1me9	1ME9 CONTAINS THE SAME PROTEIN WITH IMP BOUND
1meh	1MEH CONTAINS THE SAME PROTEIN WITH IMP AND MOA BOUND
1mei	1MEI CONTAINS THE SAME PROTEIN WITH XMP AND MYCOPHENOLIC ACID BOUND
1mew	1MEW CONTAINS THE SAME PROTEIN WITH XMP AND NAD BOUND

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (4, 4)

Sites (4, 4)

SS Bonds (1, 1)

Cis Peptide Bonds (1, 1)

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Gene Ontology (9, 9)

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