1G9S - JenaLib

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Title :   CRYSTAL STRUCTURE OF A COMPLEX BETWEEN E.COLI HPRT AND IMP

Authors :   L. W. Guddat, S. Vos, J. L. Martin, D. T. Keough, J. De Jersey

Date :   27 Nov 00 (Deposition) - 28 Aug 02 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.80

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

Keywords :   Phosphoribosyltransferases, Purine Salvage, Protein Chemistry, Enzymology, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   L. W. Guddat, S. Vos, J. L. Martin, D. T. Keough, J. De Jersey
Crystal Structures Of Free, Imp-, And Gmp-Bound Escherichia Coli Hypoxanthine Phosphoribosyltransferase.
Protein Sci. V. 11 1626 2002
PubMed-ID: 12070315 | Reference-DOI: 10.1110/PS.0201002

Molecule 1 - HYPOXANTHINE PHOSPHORIBOSYLTRANSFERASE
	Chains	:	A, B
	EC Number	:	2.4.2.8
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PT7-7
	Expression System Strain	:	SPHI606
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Gene	:	HPT
	Organism Scientific	:	ESCHERICHIA COLI
	Organism Taxid	:	562

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

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (2, 2)

No.	Name	Count	Type	Full Name
1	IMP	1	Ligand/Ion	INOSINIC ACID
2	N	1	Ligand/Ion

Biological Unit 1 (1, 2)

No.	Name	Count	Type	Full Name
1	IMP	2	Ligand/Ion	INOSINIC ACID
2	N	-1	Ligand/Ion

Asymmetric Unit (1, 1)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	GLU A:103 , ASP A:104 , ILE A:105 , ILE A:106 , ASP A:107 , SER A:108 , GLY A:109 , ASN A:110 , THR A:111 , LEU A:112 , LYS A:135 , PHE A:156 , VAL A:157 , HOH A:1001 , HOH A:1011	BINDING SITE FOR RESIDUE IMP A 190

(no "SS Bond" information available for 1G9S)

Asymmetric Unit

No.	Residues
1	Leu A:46	-	Arg A:47
2	Leu B:346	-	Arg B:347

(no "SAP(SNP)/Variant" information available for 1G9S)

Asymmetric Unit (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	PUR_PYR_PR_TRANSFER	PS00103	Purine/pyrimidine phosphoribosyl transferases signature.	HPRT_ECOLI	95-107	2	A:99-111 B:399-411

Biological Unit 1 (1, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	PUR_PYR_PR_TRANSFER	PS00103	Purine/pyrimidine phosphoribosyl transferases signature.	HPRT_ECOLI	95-107	4	A:99-111 B:399-411

(no "Exon" information available for 1G9S)

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:169
 aligned with HPRT_ECOLI | P0A9M2 from UniProtKB/Swiss-Prot  Length:178

    Alignment length:177
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       
           HPRT_ECOLI     1 MKHTVEVMIPEAEIKARIAELGRQITERYKDSGSDMVLVGLLRGSFMFMADLCREVQVSHEVDFMTASSYGSGMSTTRDVKILKDLDEDIRGKDVLIVEDIIDSGNTLSKVREILSLREPKSLAICTLLDKPSRREVNVPVEFIGFSIPDEFVVGYGIDYAQRYRHLPYIGKVILLD 177
               SCOP domains d1g9sa_ A: Hypoxanthine PRTase                                                                                                                                                    SCOP domains
               CATH domains 1g9sA00 A:5-181  [code=3.40.50.2020, no name defined]                                                                                                                             CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....eeeeehhhhhhhhhhhhhhhhhhhhh.....eeeeeee..hhhhhhhhhh......eeeeeee..--------....eee.........eeeeeeeee..hhhhhhhhhhhhh....eeeeeeeee.hhhh.......eeeee.....ee...............eeee.... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------PUR_PYR_PR_TR---------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1g9s A   5 MKHTVEVMIPEAEIKARIAELGRQITERYKDSGSDMVLVGLLRGSFMFMADLCREVQVSHEVDFMTASS--------RDLKILKDLDEDIRGKDVLIVEDIIDSGNTLSKVREILSLREPKSLAICTLLDKPSRREVNVPVEFIGFSIPDEFVVGYGIDYAQRYRHLPYIGKVILLD 181
                                    14        24        34        44        54        64        |-       |84        94       104       114       124       134       144       154       164       174       
                                                                                               73       82

Chain B from PDB  Type:PROTEIN  Length:169
 aligned with HPRT_ECOLI | P0A9M2 from UniProtKB/Swiss-Prot  Length:178

    Alignment length:177
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       
           HPRT_ECOLI     1 MKHTVEVMIPEAEIKARIAELGRQITERYKDSGSDMVLVGLLRGSFMFMADLCREVQVSHEVDFMTASSYGSGMSTTRDVKILKDLDEDIRGKDVLIVEDIIDSGNTLSKVREILSLREPKSLAICTLLDKPSRREVNVPVEFIGFSIPDEFVVGYGIDYAQRYRHLPYIGKVILLD 177
               SCOP domains d1g9sb_ B: Hypoxanthine PRTase                                                                                                                                                    SCOP domains
               CATH domains 1g9sB00 B:305-481  [code=3.40.50.2020, no name defined]                                                                                                                           CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeehhhhhhhhhhhhhhhhhhhhh.....eeeeee...hhhhhhhhhhhh....eeeeeee..--------....eee.........eeeeeeeee..hhhhhhhhhhhhh....eeeeeeeee.hhhh.......eeeee.....ee...............eeeee... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------PUR_PYR_PR_TR---------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1g9s B 305 MKHTVEVMIPEAEIKARIAELGRQITERYKDSGSDMVLVGLLRGSFMFMADLCREVQVSHEVDFMTASS--------RDLKILKDLDEDIRGKDVLIVEDIIDSGNTLSKVREILSLREPKSLAICTLLDKPSRREVNVPVEFIGFSIPDEFVVGYGIDYAQRYRHLPYIGKVILLD 481
                                   314       324       334       344       354       364        |-       384       394       404       414       424       434       444       454       464       474       
                                                                                              373      382

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(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

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

Fold: PRTase-like (145)

Superfamily: PRTase-like (145)

Family: Phosphoribosyltransferases (PRTases) (100)

Protein domain: Hypoxanthine PRTase (13)

Escherichia coli [TaxId: 562] (3)

1a	d1g9sa_	A:
1b	d1g9sb_	B:

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: 3-Layer(aba) Sandwich (12045)

Topology: Rossmann fold (7312)

Homologous Superfamily: [code=3.40.50.2020, no name defined] (117)

Escherichia coli. Organism_taxid: 562. (5)

1a	1g9sA00	A:5-181
1b	1g9sB00	B:305-481

(no "Pfam Domain" information available for 1G9S)

Asymmetric Unit(hide GO term definitions)

Chain A,B (HPRT_ECOLI | P0A9M2)

molecular function
	GO:0052657	guanine phosphoribosyltransferase activity	Catalysis of the reaction: GMP + diphosphate = guanine + 5-phospho-alpha-D-ribose 1-diphosphate.
	GO:0004422	hypoxanthine phosphoribosyltransferase activity	Catalysis of the reaction: IMP + diphosphate = hypoxanthine + 5-phospho-alpha-D-ribose 1-diphosphate.
	GO:0000287	magnesium ion binding	Interacting selectively and non-covalently with magnesium (Mg) ions.
	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: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.
	GO:0016757	transferase activity, transferring glycosyl groups	Catalysis of the transfer of a glycosyl group from one compound (donor) to another (acceptor).
biological process
	GO:0032263	GMP salvage	Any process which produces guanosine monophosphate from derivatives of it, without de novo synthesis.
	GO:0032264	IMP salvage	Any process which produces inosine monophosphate from derivatives of it, without de novo synthesis.
	GO:0009116	nucleoside metabolic process	The chemical reactions and pathways involving a nucleoside, a nucleobase linked to either beta-D-ribofuranose (a ribonucleoside) or 2-deoxy-beta-D-ribofuranose, (a deoxyribonucleoside), e.g. adenosine, guanosine, inosine, cytidine, uridine and deoxyadenosine, deoxyguanosine, deoxycytidine and thymidine (= deoxythymidine).
	GO:0006166	purine ribonucleoside salvage	Any process which produces a purine nucleoside from derivatives of it, without de novo synthesis.
cellular component
	GO:0005737	cytoplasm	All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
	GO:0005829	cytosol	The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

Asymmetric Unit
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	Ligands, Modified Residues, Ions
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		N	[ RasMol \| Jena3D ]	+environment [ RasMol \| Jena3D ]

	Sites
		AC1	[ RasMol ]	+environment [ RasMol ]

	Cis Peptide Bonds
		Leu A:46 - Arg A:47	[ RasMol ]
		Leu B:346 - Arg B:347	[ RasMol ]

Biological Unit
	Complete Structure
		Biological Unit 1	[ Jena3D ]

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	1g9s
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	2.4.2.8
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	HPRT_ECOLI \| P0A9M2	:	1g9t 1grv

1a97	1A97 CONTAINS XANTHINE-GUANINE PHOSPHORIBOSYLTRANSFERASE COMPLEXED WITH GMP
1g9t	1G9T CONTAINS HYPOXANTHINE PHOSPHORIBOSYLTRANSFERASE COMPLEXED WITH GMP

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (2, 2)

Sites (1, 1)

SS Bonds (0, 0)

Cis Peptide Bonds (2, 2)

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