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Title :   STRUCTURAL BASIS FOR THE ACYL CHAIN SELECTIVITY AND MECHANISM OF UDP-N-ACETYLGLUCOSAMINE ACYLTRANSFERASE

Authors :   A. H. Williams, C. R. H. Raetz

Date :   05 Jul 07 (Deposition) - 02 Oct 07 (Release) - 30 Jun 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.85

Chains :   Asym. Unit : X
Biol. Unit 1: X  (3x)

Keywords :   Left-Handed Parallel Beta Helix; Protein Lipid Recognition, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   A. H. Williams, C. R. H. Raetz
Structural Basis For The Acyl Chain Selectivity And Mechanism Of Udp-N-Acetylglucosamine Acyltransferase
Proc. Natl. Acad. Sci. Usa V. 104 13543 2007
PubMed-ID: 17698807 | Reference-DOI: 10.1073/PNAS.0705833104
(for further references see the PDB file header)

Molecule 1 - UDP-N-ACETYLGLUCOSAMINE ACYLTRANSFERASE
	Chains	:	X
	EC Number	:	2.3.1.129
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PTO1 (PET 23C)
	Expression System Strain	:	BL21(DE3)/PLYSE
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Gene	:	LPXA
	Organism Scientific	:	ESCHERICHIA COLI K12
	Organism Taxid	:	83333
	Strain	:	K-12
	Synonym	:	ACYL-[ACYL-CARRIER-PROTEIN]--UDP-N- ACETYLGLUCOSAMINE O-ACYLTRANSFERASE

		1
Asymmetric Unit	:	X
Biological Unit 1 (3x)	:	X

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (1, 1)

No.	Name	Count	Type	Full Name
1	U21	1	Ligand/Ion	URIDINE-5'-DIPHOSPHATE-3-O-(R-3-HYDROXYDECANOYL)-N-ACETYL-D-GLUCOSAMINE

Biological Unit 1 (1, 3)

No.	Name	Count	Type	Full Name
1	U21	3	Ligand/Ion	URIDINE-5'-DIPHOSPHATE-3-O-(R-3-HYDROXYDECANOYL)-N-ACETYL-D-GLUCOSAMINE

Asymmetric Unit (1, 1)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	GLN X:73 , ASP X:74 , LEU X:75 , LYS X:76 , MET X:118 , HIS X:122 , ALA X:124 , HIS X:125 , ASN X:137 , GLY X:143 , HIS X:144 , ILE X:152 , GLN X:161 , MET X:170 , ASN X:198 , GLU X:200 , GLY X:201 , ARG X:204 , ARG X:205 , HOH X:962 , HOH X:1063 , HOH X:1069 , HOH X:1073 , HOH X:1084 , HOH X:1086 , HOH X:1099 , HOH X:1121 , HOH X:1150 , HOH X:1244	BINDING SITE FOR RESIDUE U21 X 901

(no "SS Bond" information available for 2QIV)

Asymmetric Unit

No.	Residues
1	Asn X:190	-	His X:191

Asymmetric Unit (1, 1)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_LPXA_ECOLI_001 *	G	189	S	LPXA_ECOLI	---	---	X	G	189	S
	* ID not provided by source

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Biological Unit 1 (1, 3)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_LPXA_ECOLI_001 *	G	189	S	LPXA_ECOLI	---	---	X	G	189	S
	* ID not provided by source

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Asymmetric Unit (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	HEXAPEP_TRANSFERASES	PS00101	Hexapeptide-repeat containing-transferases signature.	LPXA_ECOLI	20-48 153-181	2	X:20-48 X:153-181

Biological Unit 1 (1, 6)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	HEXAPEP_TRANSFERASES	PS00101	Hexapeptide-repeat containing-transferases signature.	LPXA_ECOLI	20-48 153-181	6	X:20-48 X:153-181

(no "Exon" information available for 2QIV)

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 X from PDB  Type:PROTEIN  Length:262
 aligned with LPXA_ECOLI | P0A722 from UniProtKB/Swiss-Prot  Length:262

    Alignment length:262
                                    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  
           LPXA_ECOLI     1 MIDKSAFVHPTAIVEEGASIGANAHIGPFCIVGPHVEIGEGTVLKSHVVVNGHTKIGRDNEIYQFASIGEVNQDLKYAGEPTRVEIGDRNRIRESVTIHRGTVQGGGLTKVGSDNLLMINAHIAHDCTVGNRCILANNATLAGHVSVDDFAIIGGMTAVHQFCIIGAHVMVGGCSGVAQDVPPYVIAQGNHATPFGVNIEGLKRRGFSREAITAIRNAYKLIYRSGKTLDEVKPEIAELAETYPEVKAFTDFFARSTRGLIR 262
               SCOP domains d2qivx_ X: UDP N-acetylglucosamine acyltransferase                                                                                                                                                                                                                     SCOP domains
               CATH domains 2qivX01 X:1-196 Hexapeptide repeat proteins                                                                                                                                                         2qivX02 X:197-262  [code=1.20.1180.10, no name defined]            CATH domains
           Pfam domains (1) -----------------------------------------------------------------------------------------------------------Hexapep-2qivX02 X:108-143           ------------------------------------Acetyltransf_11-2qivX01 X:180-262                                                   Pfam domains (1)
           Pfam domains (2) -----------------------------------------------------------------------------------------------------------Hexapep-2qivX03 X:108-143           ----------------------------------------------------------------------------------------------------------------------- Pfam domains (2)
           Pfam domains (3) -----------------------------------------------------------------------------------------------------------Hexapep-2qivX04 X:108-143           ----------------------------------------------------------------------------------------------------------------------- Pfam domains (3)
           Pfam domains (4) -----------------------------------------------------------------------------------------------------------Hexapep-2qivX05 X:108-143           ----------------------------------------------------------------------------------------------------------------------- Pfam domains (4)
           Pfam domains (5) -----------------------------------------------------------------------------------------------------------Hexapep-2qivX06 X:108-143           ----------------------------------------------------------------------------------------------------------------------- Pfam domains (5)
         Sec.struct. author eee...eee...eee..eeee..eeee..eeee..eeee..eeee..eeee..eeee..eeee..eeeee............eeeee..eeee..eeee.......eeeeee..eeee..eeee..eeee..eeee..eeee..eeee..eeee..eeee..eeee..eeee..eee.......eeee....eeee.hhhhhhhh..hhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhh...... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------S------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------HEXAPEP_TRANSFERASES         --------------------------------------------------------------------------------------------------------HEXAPEP_TRANSFERASES         --------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2qiv X   1 MIDKSAFVHPTAIVEEGASIGANAHIGPFCIVGPHVEIGEGTVLKSHVVVNGHTKIGRDNEIYQFASIGEVNQDLKYAGEPTRVEIGDRNRIRESVTIHRGTVQGGGLTKVGSDNLLMINAHIAHDCTVGNRCILANNATLAGHVSVDDFAIIGGMTAVHQFCIIGAHVMVGGCSGVAQDVPPYVIAQGNHATPFGVNIEGLKRRGFSREAITAIRNAYKLIYRSGKTLDEVKPEIAELAETYPEVKAFTDFFARSTRGLIR 262
                                    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

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(

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Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: All beta proteins (24004)

Fold: Single-stranded left-handed beta-helix (154)

Superfamily: Trimeric LpxA-like enzymes (147)

Family: UDP N-acetylglucosamine acyltransferase (7)

Protein domain: UDP N-acetylglucosamine acyltransferase (7)

Escherichia coli, gene lpxA [TaxId: 562] (6)

d2qivx_

Asymmetric Unit

Clans(

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Families(

)

Organisms( (-)

)

Clan: no clan defined [family: Acetyltransf_11] (6)

Family: Acetyltransf_11 (6)

Escherichia coli (strain K12) (5)

Acetyltransf_11-2qivX01

X:180-262

Clan: no clan defined [family: Hexapep] (52)

Family: Hexapep (52)

Escherichia coli (strain K12) (13)

2a	Hexapep-2qivX02	X:108-143
2b	Hexapep-2qivX03	X:108-143
2c	Hexapep-2qivX04	X:108-143
2d	Hexapep-2qivX05	X:108-143
2e	Hexapep-2qivX06	X:108-143

Asymmetric Unit(hide GO term definitions)

Chain X (LPXA_ECOLI | P0A722)

molecular function
	GO:0008780	acyl-[acyl-carrier-protein]-UDP-N-acetylglucosamine O-acyltransferase activity	Catalysis of the reaction: (R)-3-hydroxytetradecanoyl-[acyl-carrier protein] + UDP-N-acetylglucosamine = [acyl-carrier protein] + UDP-3-O-(3-hydroxytetradecanoyl)-N-acetylglucosamine.
	GO:0042802	identical protein binding	Interacting selectively and non-covalently with an identical protein or proteins.
	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.
	GO:0016746	transferase activity, transferring acyl groups	Catalysis of the transfer of an acyl group from one compound (donor) to another (acceptor).
biological process
	GO:0009245	lipid A biosynthetic process	The chemical reactions and pathways resulting in the formation of lipid A, the glycolipid group of bacterial lipopolysaccharides, consisting of four to six fatty acyl chains linked to two glucosamine residues. Further modifications of the backbone are common.
	GO:0008610	lipid biosynthetic process	The chemical reactions and pathways resulting in the formation of lipids, compounds soluble in an organic solvent but not, or sparingly, in an aqueous solvent.
	GO:0006629	lipid metabolic process	The chemical reactions and pathways involving lipids, compounds soluble in an organic solvent but not, or sparingly, in an aqueous solvent. Includes fatty acids; neutral fats, other fatty-acid esters, and soaps; long-chain (fatty) alcohols and waxes; sphingoids and other long-chain bases; glycolipids, phospholipids and sphingolipids; and carotenes, polyprenols, sterols, terpenes and other isoprenoids.
cellular component
	GO:0005737	cytoplasm	All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
	GO:0005829	cytosol	The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

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	LPXA_ECOLI \| P0A722	:	1lxa 2aq9 2jf2 2jf3 2qia 4j09

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