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Title :   CRYSTAL STRUCTURE OF THE UNLIGATED (T-STATE) ASPARTATE TRANSCARBAMOYLASE FROM THE EXTREMELY THERMOPHILIC ARCHAEON SULFOLOBUS ACIDOCALDARIUS

Authors :   D. De Vos, F. Van Petegem, H. Remaut, C. Legrain, N. Glansdorff, J. J. V Beeumen

Date :   27 May 03 (Deposition) - 08 Jun 04 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.60

Chains :   Asym. Unit : A,B
Biol. Unit 1: A,B  (6x)

Keywords :   Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   D. De Vos, F. Van Petegem, H. Remaut, C. Legrain, N. Glansdorff, J. J. Van Beeumen
Crystal Structure Of T State Aspartate Carbamoyltransferase Of The Hyperthermophilic Archaeon Sulfolobus Acidocaldarius
J. Mol. Biol. V. 339 887 2004
PubMed-ID: 15165857 | Reference-DOI: 10.1016/J.JMB.2004.03.079

Molecule 1 - ASPARTATE CARBAMOYLTRANSFERASE
	Chains	:	A
	EC Number	:	2.1.3.2
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PTRC99
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Gene	:	PYRB
	Organism Scientific	:	SULFOLOBUS ACIDOCALDARIUS
	Organism Taxid	:	2285
	Synonym	:	ASPARTATE TRANSCARBAMYLASE, ASPARTATE CARBAMOYLTRANSFERASE, ATCASE

Molecule 2 - ASPARTATE CARBAMOYLTRANSFERASE REGULATORY CHAIN
	Chains	:	B
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PTRC99
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Gene	:	PYRI
	Organism Scientific	:	SULFOLOBUS ACIDOCALDARIUS
	Organism Taxid	:	2285
	Synonym	:	ASPARTATE TRANSCARBAMYLASE, ASPARTATE CARBAMOYLTRANSFERASE

		1	2
Asymmetric Unit	:	A	B
Biological Unit 1 (6x)	:	A	B

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (1, 1)

No.	Name	Count	Type	Full Name
1	ZN	1	Ligand/Ion	ZINC ION

Biological Unit 1 (0, 0)

No.	Name	Count	Type	Full Name
1	ZN	-1	Ligand/Ion	ZINC ION

Asymmetric Unit (1, 1)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	CYS B:113 , CYS B:118 , CYS B:142 , CYS B:145	BINDING SITE FOR RESIDUE ZN B 500

(no "SS Bond" information available for 1PG5)

Asymmetric Unit

No.	Residues
1	Leu A:260	-	Pro A:261

(no "SAP(SNP)/Variant" information available for 1PG5)

Asymmetric Unit (1, 1)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	CARBAMOYLTRANSFERASE	PS00097	Aspartate and ornithine carbamoyltransferases signature.	PYRB_SULAC	45-52	1	A:45-52

Biological Unit 1 (1, 6)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	CARBAMOYLTRANSFERASE	PS00097	Aspartate and ornithine carbamoyltransferases signature.	PYRB_SULAC	45-52	6	A:45-52

(no "Exon" information available for 1PG5)

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:292
 aligned with PYRB_SULAC | Q55338 from UniProtKB/Swiss-Prot  Length:299

    Alignment length:299
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290         
           PYRB_SULAC     1 MKHIISAYNFSRDELEDIFALTDKYSKNLNDTRKILSGKTISIAFFEPSTRTYLSFQKAIINLGGDVIGFSGEESTSVAKGENLADTIRMLNNYSDGIVMRHKYDGASRFASEISDIPVINAGDGKHEHPTQAVIDIYTINKHFNTIDGLVFALLGDLKYARTVNSLLRILTRFRPKLVYLISPQLLRARKEILDELNYPVKEVENPFEVINEVDVLYVTRIQKERFVDEMEYEKIKGSYIVSLDLANKMKKDSIILHPLPRVNEIDRKVDKTTKAKYFEQASYGVPVRMSILTKIYGE 299
               SCOP domains d1pg5a1 A:1-146 Aspartate carbamoyltransferase catalytic subunit                                                                                  d1pg5a2 A:147-299 Aspartate carbamoyltransferase catalytic subunit                                                                                        SCOP domains
               CATH domains 1pg5A01 A:1-129,A:278-299  [code=3.40.50.1370, no name defined]                                                                  1pg5A02 A:130-277  [code=3.40.50.1370, no name defined]                                                                                             1pg5A01                CATH domains
               Pfam domains -OTCace_N-1pg5A02 A:2-143                                                                                                                      ----OTCace-1pg5A01 A:148-296                                                                                                                             --- Pfam domains
         Sec.struct. author .....hhhhhhhhhhhhhhhhhhhhhh............eeeeee...hhhhhhhhhhhhhhh..eeeeee..-------..hhhhhhhhhhhhh.eeeeee...hhhhhhhhhh...eeeeee....hhhhhhhhhhhhhhhhh.....eeeeee....hhhhhhhhhhhhhh...eeeee.hhhhh.hhhhhh.....eeee.hhhhhhhhh.eeeee........hhhhhhhhhhhhh.hhhhhhh.....eee.........hhhhhhh...hhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------CARBAMOY------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1pg5 A   1 LKHIISAYNFSRDELEDIFALTDKYSKNLNDTRKILSGKTISIAFFEPSTRTYLSFQKAIINLGGDVIGFSGE-------GENLADTIRMLNNYSDGIVMRHKYDGASRFASEISDIPVINAGDGKHEHPTQAVIDIYTINKHFNTIDGLVFALLGDLKYARTVNSLLRILTRFRPKLVYLISPQLLRARKEILDELNYPVKEVENPFEVINEVDVLYVTRIQKERFVDEMEYEKIKGSYIVSLDLANKMKKDSIILHPLPRVNEIDRKVDKTTKAKYFEQASYGVPVRMSILTKIYGE 299
                                    10        20        30        40        50        60        70  |      -|       90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290         
                                                                                                   73      81

Chain B from PDB  Type:PROTEIN  Length:148
 aligned with PYRI_SULAC | P74766 from UniProtKB/Swiss-Prot  Length:164

    Alignment length:150
                                    20        30        40        50        60        70        80        90       100       110       120       130       140       150       160
           PYRI_SULAC    11 MVSKIKNGTVIDHIPAGRAFAVLNVLGIKGHEGFRIALVINVDSKKMGKKDIVKIEDKEISDTEANLITLIAPTATINIVREYEVVKKTKLEVPKVVKGILKCPNPYCITSNDVEAIPTFKTLTEKPLKMRCEYCETIIDENEIMSQILG 160
               SCOP domains d1pg5b1 B:11-104 Aspartate ca  rbamoyltransferase                                             d1pg5b2 B:105-160                                        SCOP domains
               CATH domains 1pg5B01 B:11-103  [code=3.30.  70.140, no name defined]                                      1pg5B02 B:104-160  [code=2.30.30.20, no name defined]     CATH domains
               Pfam domains PyrI-1pg5B01 B:11-103                                                                        -PyrI_C-1pg5B02 B:105-156                            ---- Pfam domains
         Sec.struct. author .......eeeeeeee..hhhhhhhhh...--....eeeeeeeee...eeeeeeeee....hhhhhhhhh......eeeeee..eeeeee......eee.........hhhhh......eeeeee....eeee.....eeehhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1pg5 B  11 MVSKIKNGTVIDHIPAGRAFAVLNVLGIK--EGFRIALVINVDSKKMGKKDIVKIEDKEISDTEANLITLIAPTATINIVREYEVVKKTKLEVPKVVKGILKCPNPYCITSNDVEAIPTFKTLTEKPLKMRCEYCETIIDENEIMSQILG 160
                                    20        30        |- |      50        60        70        80        90       100       110       120       130       140       150       160
                                                       39 42

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(hide GO term definitions)

Chain A (PYRB_SULAC | Q55338)

molecular function
	GO:0016597	amino acid binding	Interacting selectively and non-covalently with an amino acid, organic acids containing one or more amino substituents.
	GO:0004070	aspartate carbamoyltransferase activity	Catalysis of the reaction: L-aspartate + carbamoyl phosphate = N-carbamoyl-L-aspartate + H(+) + phosphate.
	GO:0016743	carboxyl- or carbamoyltransferase activity	Catalysis of the transfer of a carboxyl- or carbamoyl group from one compound (donor) to another (acceptor).
	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.
biological process
	GO:0044205	'de novo' UMP biosynthetic process	The chemical reactions and pathways resulting in the formation of UMP, uridine monophosphate, starting with the synthesis of (S)-dihydroorotate from bicarbonate; UMP biosynthesis may either occur via reduction by quinone, NAD(+) or oxygen.
	GO:0006207	'de novo' pyrimidine nucleobase biosynthetic process	The chemical reactions and pathways resulting in the formation of pyrimidine nucleobases, 1,3-diazine, organic nitrogenous bases, beginning with the synthesis of a pyrimidine ring from simpler precursors.
	GO:0006520	cellular amino acid metabolic process	The chemical reactions and pathways involving amino acids, carboxylic acids containing one or more amino groups, as carried out by individual cells.
	GO:0006221	pyrimidine nucleotide biosynthetic process	The chemical reactions and pathways resulting in the formation of a pyrimidine nucleotide, a compound consisting of nucleoside (a pyrimidine base linked to a deoxyribose or ribose sugar) esterified with a phosphate group at either the 3' or 5'-hydroxyl group of the sugar.

Chain B (PYRI_SULAC | P74766)

molecular function
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
biological process
	GO:0006207	'de novo' pyrimidine nucleobase biosynthetic process	The chemical reactions and pathways resulting in the formation of pyrimidine nucleobases, 1,3-diazine, organic nitrogenous bases, beginning with the synthesis of a pyrimidine ring from simpler precursors.
	GO:0006221	pyrimidine nucleotide biosynthetic process	The chemical reactions and pathways resulting in the formation of a pyrimidine nucleotide, a compound consisting of nucleoside (a pyrimidine base linked to a deoxyribose or ribose sugar) esterified with a phosphate group at either the 3' or 5'-hydroxyl group of the sugar.
cellular component
	GO:0009347	aspartate carbamoyltransferase complex	A multienzyme complex that catalyzes the formation N-carbamoyl-L-aspartate from carbamoyl phosphate and L-aspartate. It exhibits a variety of architectural organizations, but in all microorganisms the core catalytic component is a homotrimer of approximately 34 kDa polypeptides.

Asymmetric Unit
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	Sites
		AC1	[ RasMol ]	+environment [ RasMol ]

	Cis Peptide Bonds
		Leu A:260 - Pro A:261	[ RasMol ]

Biological Unit
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		Biological Unit 1	[ Jena3D ]

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	PYRB_SULAC \| Q55338	:	2be9
	PYRI_SULAC \| P74766	:	2be9

8at1	CRYSTAL STRUCTURES OF ASPARTATE CARBAMOYLTRANSFERASE LIGATED WITH PHOSPHONOACETAMIDE, MALONATE, AND CTP OR ATP AT 2.8-A RESOLUTION AND NEUTRAL PH

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (1, 1)

Sites (1, 1)

SS Bonds (0, 0)

Cis Peptide Bonds (1, 1)

Sequence-Structure Mapping

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Exons (0, 0)

Sequences/Alignments

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SCOP Domains (3, 4)

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