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Title :   CRYSTAL STRUCTURE OF GLUTAMINE SYNTHETASE FROM SYNECHOCYSTIS SP. PCC 6803

Authors :   L. Saelices, D. Cascio, F. J. Florencio, M. I. Muro-Pastor

Date :   10 Jun 10 (Deposition) - 15 Jun 11 (Release) - 15 Jun 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.80

Chains :   Asym. Unit : A
Biol. Unit 1: A  (12x)

Keywords :   Glutamine Synthetase Type I, Gsi, Nitrogen Metabolism, Synechocystis, Ligase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   L. Saelices, D. Cascio, F. J. Florencio, M. I. Muro-Pastor
Crystal Structure Of Glutamine Synthetase From Synechocysti Sp. Pcc 6803
To Be Published
PubMed: search

Molecule 1 - GLUTAMINE SYNTHETASE
	Chains	:	A
	EC Number	:	6.3.1.2
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PBS-SK+
	Expression System Strain	:	DH5-ALPHA
	Expression System Taxid	:	668369
	Expression System Vector Type	:	PLASMID
	Gene	:	GLNA, SLR1756
	Organism Scientific	:	SYNECHOCYSTIS SP.
	Organism Taxid	:	1148
	Strain	:	PCC 6803
	Synonym	:	GLUTAMATE--AMMONIA LIGASE

		1
Asymmetric Unit	:	A
Biological Unit 1 (12x)	:	A

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (2, 4)

No.	Name	Count	Type	Full Name
1	ANP	1	Ligand/Ion	PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
2	MN	3	Ligand/Ion	MANGANESE (II) ION

Biological Unit 1 (1, 12)

No.	Name	Count	Type	Full Name
1	ANP	12	Ligand/Ion	PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
2	MN	-1	Ligand/Ion	MANGANESE (II) ION

Asymmetric Unit (4, 4)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	TYR A:128 , GLU A:132 , GLU A:210 , LYS A:211 , ILE A:226 , LYS A:227 , PHE A:228 , HIS A:274 , SER A:276 , ARG A:342 , ARG A:347 , LYS A:356 , ARG A:359 , GLU A:361 , MN A:475 , MN A:476 , MN A:477	BINDING SITE FOR RESIDUE ANP A 474
2	AC2	SOFTWARE	GLU A:134 , GLU A:215 , GLU A:223 , ANP A:474	BINDING SITE FOR RESIDUE MN A 475
3	AC3	SOFTWARE	GLU A:132 , ANP A:474	BINDING SITE FOR RESIDUE MN A 476
4	AC4	SOFTWARE	GLU A:132 , HIS A:272 , GLU A:361 , ARG A:363 , ANP A:474	BINDING SITE FOR RESIDUE MN A 477

(no "SS Bond" information available for 3NG0)

Asymmetric Unit

No.	Residues
1	Gly A:169	-	Gly A:170
2	Tyr A:182	-	Phe A:183
3	Ala A:186	-	Pro A:187
4	Phe A:329	-	Glu A:330
5	Ala A:331	-	Pro A:332
6	Asn A:388	-	Gln A:389

(no "SAP(SNP)/Variant" information available for 3NG0)

Asymmetric Unit (2, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	GLNA_1	PS00180	Glutamine synthetase signature 1.	GLN1B_SYNY3	52-70	1	A:52-70
2	GLNA_ATP	PS00181	Glutamine synthetase putative ATP-binding region signature.	GLN1B_SYNY3	261-276	1	A:261-276

Biological Unit 1 (2, 24)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	GLNA_1	PS00180	Glutamine synthetase signature 1.	GLN1B_SYNY3	52-70	12	A:52-70
2	GLNA_ATP	PS00181	Glutamine synthetase putative ATP-binding region signature.	GLN1B_SYNY3	261-276	12	A:261-276

(no "Exon" information available for 3NG0)

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:465
 aligned with GLN1B_SYNY3 | P77961 from UniProtKB/Swiss-Prot  Length:473

    Alignment length:471
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302       312       322       332       342       352       362       372       382       392       402       412       422       432       442       452       462       472 
          GLN1B_SYNY3     3 RTPQEVLKWIQDENIKIIDLKFIDTPGIWQHCSFYYDQLDENSFTEGIPFDGSSIRGWKAINESDMCMVPDPNTATIDPFCKEPTLSMICSIKEPRTGEWYNRDPRTIAAKAVEYLRGTGIADTVYFGPEAEFFLFDDIRFGQTENSSYYFADSVEGRWNTGREEEGGNLGYKPGYKQGYFPVAPTDTAQDIRTEMLLTMAGLCVPIEKHHHEVASGGQNELGIKFDKLVNSADNLMIYKYVIKNVAKKYGKTVTFMPKPIFNDNGSGMHVHQSLWKDGQPLFAGDKYAGFSQMGLWYIGGILKHAPALLAFTNPTTNSYKRLVPGFEAPVNLAYSQGNRSASVRIPLSGGNPKAKRLEFRCPDATSNPYLAFAAMLCAGIDGIKNQIDPGEPLDVDIYDLSPEELAKIPSTPGSLEAALEALEKDHEFLTGTGVFSPDFVESWIEYKLDNEVNPMRLRPHPYEFSLYYDC 473
               SCOP domains d3ng0a1 A:3-103 automated matches                                                                    d3ng0a2 A:104-473 automated matches                                                                                                                                                                                                                                                                                                                                                SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhh...eeeeeee.....eeeeeee.hhhhhhhhh..eeee........hhhh.eeeeee.hhhhee.......eeeeeeeee..........hhhhhhhhhhhhhhhh....eeeeeeee.eeee.eeeeee....eeeeee...hhhhh...........................hhhhhhhhhhhhhhh...eeeeee......eeeeee..eehhhhhhhhhhhhhhhhhhhhhh..eee.............eeeeeeeee..ee.....hhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhh...........eee......eee.....hhhhh.eee.......hhhhhhhhhhhhhhhhhhhh...........------..........hhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------GLNA_1  PDB: A:52-7----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------GLNA_ATP        ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3ng0 A   3 RTPQEVLKWIQDENIKIIDLKFIDTPGIWQHCSFYYDQLDENSFTEGIPFDGSSIRGWKAINESDMCMVPDPNTATIDPFCKEPTLSMICSIKEPRTGEWYNRDPRTIAAKAAEYLRGTGIADTVYFGPEAEFFLFDDIRFGQTENSSYYFADSVEGRWNTGREEEGGNLGYKPGYKQGYFPVAPTDTAQDIRTEMLLTMAAFGVPIEKHHHEVASGGQNELGIKFDKLVNSADNLMIYKYVIKNVAKKYGKTVTFMPKPIFNDNGSGMHVHQSLWKDGQPLFAGDKYAGFSQMGLWYIGGILKHAPALLAFTNPTTNSYKRLVPGFEAPVNLAYSQGNRSASVRIPLSGGNPKAKRLEFRCPDATSNPYLAFAAMLCAGIDGIKNQIDPGEPLDVDI------ELAKIPSTPGSLEAALEALEKDHEFLTGTGVFSPDFVESWIEYKLDNEVNPMRLRPHPYEFSLYYDC 473
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302       312       322       332       342       352       362       372       382       392       | -    |  412       422       432       442       452       462       472 
                                                                                                                                                                                                                                                                                                                                                                                                                                       400    407

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 '\|'

(no "CATH Domain" information available for 3NG0)

(no "Pfam Domain" information available for 3NG0)

Asymmetric Unit(hide GO term definitions)

Chain A (GLN1B_SYNY3 | P77961)

molecular function
	GO:0005524	ATP binding	Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
	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:0004356	glutamate-ammonia ligase activity	Catalysis of the reaction: L-glutamate + ATP + NH(4)(+) = L-glutamine + ADP + 2 H(+) + phosphate.
	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.
biological process
	GO:0006542	glutamine biosynthetic process	The chemical reactions and pathways resulting in the formation of glutamine, 2-amino-4-carbamoylbutanoic acid.
	GO:0006807	nitrogen compound metabolic process	The chemical reactions and pathways involving organic or inorganic compounds that contain nitrogen.
	GO:0009399	nitrogen fixation	The process in which nitrogen is taken from its relatively inert molecular form (N2) in the atmosphere and converted into nitrogen compounds useful for other chemical processes, such as ammonia, nitrate and nitrogen dioxide.
cellular component
	GO:0005737	cytoplasm	All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

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	Cis Peptide Bonds
		Ala A:186 - Pro A:187	[ RasMol ]
		Ala A:331 - Pro A:332	[ RasMol ]
		Asn A:388 - Gln A:389	[ RasMol ]
		Gly A:169 - Gly A:170	[ RasMol ]
		Phe A:329 - Glu A:330	[ RasMol ]
		Tyr A:182 - Phe A:183	[ RasMol ]

Biological Unit
	Complete Structure
		Biological Unit 1	[ Jena3D ]

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Ligands, Modified Residues, Ions (2, 4)

Sites (4, 4)

SS Bonds (0, 0)

Cis Peptide Bonds (6, 6)

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