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Title :   CRYSTAL STRUCTURE OF PHOSPHORIBOSYLAMINOIMIDAZOLE-SUCCINOCARBOXAMIDE SYNTHASE FROM EHRLICHIA CHAFFEENSIS AT 1.8A RESOLUTION

Authors :   Seattle Structural Genomics Center For Infectious Disease (S

Date :   18 Nov 09 (Deposition) - 01 Dec 09 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.80

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

Keywords :   Ssgcid, Nih, Niaid, Sbri, Uw, Emerald Biostructures, Ehrlichia Chaffeensis, Phosphoribosylaminoimidazole-Succinocarboxamide Synthase, Atp-Binding, Ligase, Nucleotide-Binding, Purine Biosynthesis, Structural Genomics, Seattle Structural Genomics Center For Infectious Disease (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   Seattle Structural Genomics Center For Infectious Disease (Ssgcid), J. Abendroth, T. E. Edwards, B. Staker
Crystal Structure Of Phosphoribosylaminoimidazole-Succinocarboxamide Synthase From Ehrlichia Chaffeensis At 1. 8A Resolution
To Be Published
PubMed: search

Molecule 1 - PHOSPHORIBOSYLAMINOIMIDAZOLE-SUCCINOCARBOXAMIDE SYNTHASE
	Chains	:	A
	EC Number	:	6.3.2.6
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	AVA0421
	Expression System Strain	:	BL21(DE3)
	Expression System Taxid	:	469008
	Expression System Vector Type	:	PLASMID
	Gene	:	PURC, ECH_0290
	Organism Scientific	:	EHRLICHIA CHAFFEENSIS STR. ARKANSAS
	Organism Taxid	:	205920
	Strain	:	ARKANSAS
	Synonym	:	SAICAR SYNTHETASE

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

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (2, 12)

No.	Name	Count	Type	Full Name
1	CL	2	Ligand/Ion	CHLORIDE ION
2	EDO	10	Ligand/Ion	1,2-ETHANEDIOL

Biological Unit 1 (1, 10)

No.	Name	Count	Type	Full Name
1	CL	-1	Ligand/Ion	CHLORIDE ION
2	EDO	10	Ligand/Ion	1,2-ETHANEDIOL

Biological Unit 2 (1, 20)

No.	Name	Count	Type	Full Name
1	CL	-1	Ligand/Ion	CHLORIDE ION
2	EDO	20	Ligand/Ion	1,2-ETHANEDIOL

Asymmetric Unit (11, 11)

No.	Name	Evidence	Residues	Description
01	AC1	SOFTWARE	ARG A:94 , ASN A:100 , ARG A:203	BINDING SITE FOR RESIDUE CL A 400
02	AC2	SOFTWARE	PRO A:199 , ASP A:200 , CYS A:202 , ASP A:214 , LYS A:215 , ASP A:216 , ARG A:219 , EDO A:303	BINDING SITE FOR RESIDUE EDO A 300
03	AC3	SOFTWARE	LEU A:19 , LYS A:83 , ILE A:84 , THR A:85 , HIS A:184 , HOH A:244 , EDO A:309	BINDING SITE FOR RESIDUE EDO A 301
04	AC4	SOFTWARE	GLU A:90 , TYR A:121 , ASP A:129	BINDING SITE FOR RESIDUE EDO A 302
05	AC5	SOFTWARE	VAL A:92 , ASP A:175 , THR A:201 , ARG A:203 , EDO A:300	BINDING SITE FOR RESIDUE EDO A 303
06	AC6	SOFTWARE	LYS A:211 , LEU A:213 , ASN A:224 , GLU A:227 , GLY A:228 , GLU A:231 , HOH A:291 , HOH A:338	BINDING SITE FOR RESIDUE EDO A 304
07	AC7	SOFTWARE	GLU A:23 , ILE A:43 , ILE A:71 , HOH A:315 , HOH A:335 , HOH A:388 , HOH A:402	BINDING SITE FOR RESIDUE EDO A 305
08	AC8	SOFTWARE	ASN A:20 , LEU A:22 , ASN A:185 , ASN A:224 , GLU A:227 , HOH A:319 , HOH A:335	BINDING SITE FOR RESIDUE EDO A 306
09	AC9	SOFTWARE	HIS A:27 , LYS A:29 , ASP A:30 , ILE A:62 , ARG A:77 , HOH A:332 , HOH A:426	BINDING SITE FOR RESIDUE EDO A 307
10	BC1	SOFTWARE	SER A:115 , PRO A:116 , GLY A:135 , LEU A:138 , SER A:139 , HOH A:391	BINDING SITE FOR RESIDUE EDO A 308
11	BC2	SOFTWARE	LEU A:19 , HIS A:184 , ASN A:185 , EDO A:301 , HOH A:314	BINDING SITE FOR RESIDUE EDO A 309

(no "SS Bond" information available for 3KRE)

(no "Cis Peptide Bond" information available for 3KRE)

(no "SAP(SNP)/Variant" information available for 3KRE)

Asymmetric Unit (1, 1)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SAICAR_SYNTHETASE_2	PS01058	SAICAR synthetase signature 2.	PUR7_EHRCR	173-181	1	A:173-181

Biological Unit 1 (1, 1)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SAICAR_SYNTHETASE_2	PS01058	SAICAR synthetase signature 2.	PUR7_EHRCR	173-181	1	A:173-181

Biological Unit 2 (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SAICAR_SYNTHETASE_2	PS01058	SAICAR synthetase signature 2.	PUR7_EHRCR	173-181	2	A:173-181

(no "Exon" information available for 3KRE)

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:237
 aligned with PUR7_EHRCR | Q2GHH2 from UniProtKB/Swiss-Prot  Length:242

    Alignment length:237
                                    14        24        34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       234       
           PUR7_EHRCR     5 EKIYEGKAKIIFATLNPLEVIQHFKDEITAFNNKKAAIIHEKGILNNYISSFLMKKLIDKGIKTHFISLLNQREQLVKKITIIPIEVVIRNLAAGNFSKRFQIADGTPFKSPIIEFYYKNDELSDPMVSEGHILSFQWLTNQELEKIKILSLKINNILSELFFNVGIKLVDFKLEFGKLHNDEQSDLFLADEISPDTCRLWDISTNKRLDKDRYRLNLGNVIEGYREVAHKLNAIPN 241
               SCOP domains d3krea_ A: automated matches                                                                                                                                                                                                                  SCOP domains
               CATH domains 3kreA01 A:5-84,A:225-241 Phosphorylase Kinase; domain 1                         3kreA02 A:85-224 ATP-grasp fold, B domain                                                                                                   3kreA01           CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeee...eeeee.....eeeeee..eeee....eeee..hhhhhhhhhhhhhhhhhhhh.....eeee....eeeee.eee..eeeeeeee.hhhhhhhhh.....eeeeeeeeeee........eehhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhh.eeeeeeee.eeee........ee........eeeee........hhhhhh...hhhhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------SAICAR_SY------------------------------------------------------------ PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3kre A   5 EKIYEGKAKIIFATLNPLEVIQHFKDEITAFNNKKAAIIHEKGILNNYISSFLMKKLIDKGIKTHFISLLNQREQLVKKITIIPIEVVIRNLAAGNFSKRFQIADGTPFKSPIIEFYYKNDELSDPMVSEGHILSFQWLTNQELEKIKILSLKINNILSELFFNVGIKLVDFKLEFGKLHNDEQSDLFLADEISPDTCRLWDISTNKRLDKDRYRLNLGNVIEGYREVAHKLNAIPN 241
                                    14        24        34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       234

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(

)

Protein Domains( (-)

)

Organisms( (-)

)

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

Fold: SAICAR synthase-like (28)

Superfamily: SAICAR synthase-like (28)

Family: automated matches (12)

Protein domain: automated matches (12)

Ehrlichia chaffeensis [TaxId: 205920] (1)

d3krea_

Asymmetric Unit

Classes(

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Architectures( (-)

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Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: 2-Layer Sandwich (8480)

Topology: D-amino Acid Aminotransferase; Chain A, domain 1 (175)

Homologous Superfamily: ATP-grasp fold, B domain (118)

Arkansas (Ehrlichia chaffeensis str) (1)

3kreA02

A:85-224

Topology: Phosphorylase Kinase; domain 1 (1392)

Homologous Superfamily: Phosphorylase Kinase; domain 1 (1392)

Arkansas (Ehrlichia chaffeensis str) (1)

3kreA01

A:5-84,A:225-241

(no "Pfam Domain" information available for 3KRE)

Asymmetric Unit(hide GO term definitions)

Chain A (PUR7_EHRCR | Q2GHH2)

molecular function
	GO:0005524	ATP binding	Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
	GO:0016874	ligase activity	Catalysis of the joining of two substances, or two groups within a single molecule, with the concomitant hydrolysis of the diphosphate bond in ATP or a similar triphosphate.
	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:0004639	phosphoribosylaminoimidazolesuccinocarboxamide synthase activity	Catalysis of the reaction: 5-amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxylate + L-aspartate + ATP = (2S)-2-[5-amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamido]succinate + ADP + 2 H(+) + phosphate.
biological process
	GO:0006189	'de novo' IMP biosynthetic process	The chemical reactions and pathways resulting in the formation of IMP, inosine monophosphate, by the stepwise assembly of a purine ring on ribose 5-phosphate.
	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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