3U55 - JenaLib

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Title :   CRYSTAL STRUCTURE (TYPE-2) OF SAICAR SYNTHETASE FROM PYROCOCCUS HORIKOSHII OT3

Authors :   K. Manjunath, S. P. Kanaujia, S. Kanagaraj, J. Jeyakanthan, K. Sekar

Date :   11 Oct 11 (Deposition) - 17 Oct 12 (Release) - 18 Dec 13 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.90

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

Keywords :   Saicar Synthetase-Like Fold, Ligase, Atp-Binding, Phosphoribosylaminoimidazole-Succinocarboxamide Synthetase, Purc, De Novo Purine Biosynthesis, Ligation Of Carboxy And Amine Groups (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   K. Manjunath, S. P. Kanaujia, S. Kanagaraj, J. Jeyakanthan, K. Sekar
Structure Of Saicar Synthetase From Pyrococcus Horikoshii Ot3: Insights Into Thermal Stability
Int. J. Biol. Macromol. V. 53 7 2013
PubMed-ID: 23137517 | Reference-DOI: 10.1016/J.IJBIOMAC.2012.10.028

Molecule 1 - PHOSPHORIBOSYLAMINOIMIDAZOLE-SUCCINOCARBOXAMIDE SYNTHASE
	Chains	:	A
	EC Number	:	6.3.2.6
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PET11A
	Expression System Strain	:	BL21-CODONPLUS (DE3)-RIL
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Gene	:	PH0239, PURC
	Organism Scientific	:	PYROCOCCUS HORIKOSHII
	Organism Taxid	:	70601
	Strain	:	OT3
	Synonym	:	SAICAR SYNTHETASE

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

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (2, 3)

No.	Name	Count	Type	Full Name
1	ACT	1	Ligand/Ion	ACETATE ION
2	SO4	2	Ligand/Ion	SULFATE ION

Biological Unit 1 (2, 6)

No.	Name	Count	Type	Full Name
1	ACT	2	Ligand/Ion	ACETATE ION
2	SO4	4	Ligand/Ion	SULFATE ION

Asymmetric Unit (3, 3)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	ARG A:93 , GLY A:98 , SER A:99 , ARG A:198 , HOH A:429	BINDING SITE FOR RESIDUE SO4 A 500
2	AC2	SOFTWARE	THR A:32 , PHE A:34 , LYS A:210 , ARG A:214 , HOH A:403	BINDING SITE FOR RESIDUE SO4 A 501
3	AC3	SOFTWARE	ARG A:103 , PRO A:129 , MET A:130 , HOH A:286	BINDING SITE FOR RESIDUE ACT A 502

(no "SS Bond" information available for 3U55)

(no "Cis Peptide Bond" information available for 3U55)

(no "SAP(SNP)/Variant" information available for 3U55)

Asymmetric Unit (2, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SAICAR_SYNTHETASE_1	PS01057	SAICAR synthetase signature 1.	PUR7_PYRHO	85-99	1	A:85-99
2	SAICAR_SYNTHETASE_2	PS01058	SAICAR synthetase signature 2.	PUR7_PYRHO	171-179	1	A:171-179

Biological Unit 1 (2, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SAICAR_SYNTHETASE_1	PS01057	SAICAR synthetase signature 1.	PUR7_PYRHO	85-99	2	A:85-99
2	SAICAR_SYNTHETASE_2	PS01058	SAICAR synthetase signature 2.	PUR7_PYRHO	171-179	2	A:171-179

(no "Exon" information available for 3U55)

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:227
 aligned with PUR7_PYRHO | O57978 from UniProtKB/Swiss-Prot  Length:238

    Alignment length:227
                                    21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       
           PUR7_PYRHO    12 AKKMIPIDDDKLIMEFKDDATAFDGTKKARFKGKGWLNAQLSVIFFKLLEEHGIKTHFIGVAGGNRLIVEKLDMYPLEVVVRNVVAGSLKKRLPLPEGYELPEPIVELYYKNDELHDPMINYYHAKVLGISLDEIKKIEEIALKVNEILKDYLAKKGIILVDFKLEFGKDKNGDIVLADEISPDTCRFWDAKTKRSLDKDVFRFDKGDLIEAYKEIYERITGEKPEF 238
               SCOP domains d3u55a_ A: automated matches                                                                                                                                                                                                        SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeee....eeeeee..eeee....eeee..hhhhhhhhhhhhhhhhhhhh.....eeee....eeeee..ee..eeeeeeee.hhhhhhh.......eeeeeeeeeee........eehhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhh..eeeeeeee.eee.....eee........eeeee........hhhhhh...hhhhhhhhhhhhhhh..... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------SAICAR_SYNTHETA-----------------------------------------------------------------------SAICAR_SY----------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3u55 A  12 AKKMIPIDDDKLIMEFKDDATAFDGTKKARFKGKGWLNAQLSVIFFKLLEEHGIKTHFIGVAGGNRLIVEKLDMYPLEVVVRNVVAGSLKKRLPLPEGYELPEPIVELYYKNDELHDPMINYYHAKVLGISLDEIKKIEEIALKVNEILKDYLAKKGIILVDFKLEFGKDKNGDIVLADEISPDTCRFWDAKTKRSLDKDVFRFDKGDLIEAYKEIYERITGEKPEF 238
                                    21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231

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) (23004)

Fold: SAICAR synthase-like (28)

Superfamily: SAICAR synthase-like (28)

Family: automated matches (12)

Protein domain: automated matches (12)

Pyrococcus horikoshii [TaxId: 70601] (2)

d3u55a_

(no "CATH Domain" information available for 3U55)

(no "Pfam Domain" information available for 3U55)

Asymmetric Unit(hide GO term definitions)

Chain A (PUR7_PYRHO | O57978)

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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	Cis Peptide Bonds
(no "Cis Peptide Bonds" information available for 3u55)

Biological Unit
	Complete Structure
		Biological Unit 1	[ Jena3D ]

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	3u55
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	PUR7_PYRHO \| O57978
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	6.3.2.6
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3u54	SAICAR SYNTHETASE (TYPE-1) FROM PYROCOCCUS HORIKOSHII

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (2, 3)

Sites (3, 3)

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (2, 2)

Exons (0, 0)

Sequences/Alignments

Classification and Annotation

SCOP Domains (1, 1)

CATH Domains (0, 0)

Pfam Domains (0, 0)

Gene Ontology (6, 6)

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