Annotations: 3KRE

Crystal structure of phosphoribosylaminoimidazole-succinocarboxamide synthase from Ehrlichia chaffeensis at 1.8A resolution

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d3krea_	Alpha and beta proteins (a+b)	SAICAR synthase-like	SAICAR synthase-like	automated matches	automated matches	(Ehrlichia chaffeensis str. Arkansas ) [TaxId: 205920 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	SAICAR synthase	8089515	4002084	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	SAICAR synthase-like	8089516	3000802	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	adh_short_C2	e3kreA1	A: alpha arrays	X: Cystatin-like	H: NTF2-like	T: NTF2-like	F: adh_short_C2	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.200.20	Alpha Beta	2-Layer Sandwich	Phosphorylase Kinase	domain 1	CATH (4.3.0)
A	3.30.470.20	Alpha Beta	2-Layer Sandwich	D-amino Acid Aminotransferase	Chain A, domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF01259	SAICAR synthetase (SAICAR_synt)	SAICAR synthetase	Phosphoribosylaminoimidazole-succinocarboxamide synthase (EC:6.3.2.6) (SAICAR synthetase) catalyses the seventh step in the de novo purine biosynthetic pathway; the ATP-dependent conversion of 5'-phosphoribosyl-5-aminoimidazole-4-carboxylic acid an ...	Phosphoribosylaminoimidazole-succinocarboxamide synthase (EC:6.3.2.6) (SAICAR synthetase) catalyses the seventh step in the de novo purine biosynthetic pathway; the ATP-dependent conversion of 5'-phosphoribosyl-5-aminoimidazole-4-carboxylic acid and aspartic acid to SAICAR [1]. This domain can be found in SAICAR synthetases as a monofunctional protein from the bacteria (purC), fungi (ADE1) and plants (Pur7). In animals, this domain can be found in the N-terminal domain of a multifunctional enzyme (ADE2) possessing both the SAICAR synthetase and the phosphoribosylaminoimidazole carboxylase (AIR carboxylase) activity.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Phosphoribosylaminoimidazole-succinocarboxamide synthase	acid-amino acid ligase activity phosphoribosylaminoimidazolesuccinocarboxamide synthase activity catalytic activity ligase activity, forming carbon-nitrogen bonds ligase activity	cobalamin metabolic process cobalamin biosynthetic process water-soluble vitamin biosynthetic process tetrapyrrole metabolic process small molecule biosynthetic process vitamin biosynthetic process vitamin metabolic process tetrapyrrole biosynthetic process biosynthetic process small molecule metabolic process metabolic process cellular process ribose phosphate metabolic process IMP metabolic process cobalamin metabolic process cobalamin biosynthetic process water-soluble vitamin biosynthetic process tetrapyrrole metabolic process small molecule biosynthetic process vitamin biosynthetic process vitamin metabolic process tetrapyrrole biosynthetic process biosynthetic process small molecule metabolic process metabolic process cellular process ribose phosphate metabolic process IMP metabolic process purine ribonucleoside monophosphate biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process nucleobase-containing compound metabolic process ribonucleotide biosynthetic process purine nucleoside monophosphate biosynthetic process purine ribonucleoside monophosphate metabolic process purine nucleotide metabolic process ribonucleotide metabolic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process purine nucleoside monophosphate metabolic process phosphorus metabolic process ribose phosphate biosynthetic process nucleoside monophosphate metabolic process nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process primary metabolic process nucleotide metabolic process nucleobase-containing compound biosynthetic process nucleoside monophosphate biosynthetic process purine-containing compound metabolic process IMP biosynthetic process organophosphate metabolic process organophosphate biosynthetic process nucleoside phosphate biosynthetic process 'de novo' IMP biosynthetic process purine ribonucleotide metabolic process ribonucleoside monophosphate biosynthetic process purine nucleotide biosynthetic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR028923	SAICAR synthetase/ADE2, N-terminal	Domain
A	IPR001636	Phosphoribosylaminoimidazole-succinocarboxamide synthase	Family
A	IPR033934	Bacterial and archaeal 5-aminoimidazole-4-(N-succinylcarboxamide) ribonucleotide synthase	Family
A	IPR018236	SAICAR synthetase, conserved site	Conserved Site