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(-) Description

Title :  GALACTOSIDE ACETYLTRANSFERASE IN COMPLEX WITH COENZYME A
 
Authors :  X. -G. Wang, L. R. Olsen, S. L. Roderick
Date :  04 Jan 02  (Deposition) - 10 Apr 02  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  3.20
Chains :  Asym./Biol. Unit :  A,B,C
Keywords :  Left-Handed Parallel Beta Helix, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  X. G. Wang, L. R. Olsen, S. L. Roderick
Structure Of The Lac Operon Galactoside Acetyltransferase.
Structure V. 10 581 2002
PubMed-ID: 11937062  |  Reference-DOI: 10.1016/S0969-2126(02)00741-4
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - GALACTOSIDE O-ACETYLTRANSFERASE
    Chains: A, B, C
    EC Number: 2.3.1.18
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PTAC-85
    Expression System Strain: TG1
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Gene: LACA
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 562
    Synonym: THIOGALACTOSIDE ACETYLTRANSFERASE

 Structural Features

(-) Chains, Units

  123
Asymmetric/Biological Unit : ABC

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 3)

Asymmetric/Biological Unit (1, 3)
No.NameCountTypeFull Name
1COA3Ligand/IonCOENZYME A

(-) Sites  (3, 3)

Asymmetric Unit (3, 3)
No.NameEvidenceResiduesDescription
1AC1SOFTWARETRP A:139 , SER A:142 , GLY A:159 , ALA A:160 , ALA A:175 , ARG A:183 , SER B:111 , THR B:113 , ASN B:147 , THR B:165 , LYS B:166 , VAL B:177 , PRO B:178 , ARG B:180BINDING SITE FOR RESIDUE COA B 204
2AC2SOFTWAREGLY B:141 , SER B:142 , GLY B:159 , ALA B:160 , ALA B:175 , ARG B:183 , SER C:111 , THR C:113 , ASN C:147 , THR C:165 , LYS C:166 , PRO C:178BINDING SITE FOR RESIDUE COA C 205
3AC3SOFTWARESER A:111 , THR A:113 , VAL A:117 , ASN A:147 , THR A:165 , PRO A:178 , TRP C:139 , SER C:142 , GLY C:159 , ALA C:160 , ALA C:175 , GLY C:176 , ARG C:183 , ASP C:196 , SER C:201BINDING SITE FOR RESIDUE COA C 206

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (6, 6)

Asymmetric/Biological Unit
No.Residues
1Pro A:66 -Pro A:67
2Val A:177 -Pro A:178
3Pro B:66 -Pro B:67
4Val B:177 -Pro B:178
5Pro C:66 -Pro C:67
6Val C:177 -Pro C:178

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (1, 3)

Asymmetric/Biological Unit (1, 3)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1HEXAPEP_TRANSFERASESPS00101 Hexapeptide-repeat containing-transferases signature.THGA_ECOLI140-168
 
 		  3A:140-168
B:140-168
C:140-168

(-) Exons   (0, 0)

(no "Exon" information available for 1KQA)

(-) Sequences/Alignments

Asymmetric/Biological 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:200
 aligned with THGA_ECOLI | P07464 from UniProtKB/Swiss-Prot  Length:203

    Alignment length:200
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201
           THGA_ECOLI     2 NMPMTERIRAGKLFTDMCEGLPEKRLRGKTLMYEFNHSHPSEVEKRESLIKEMFATVGENAWVEPPVYFSYGSNIHIGRNFYANFNLTIVDDYTVTIGDNVLIAPNVTLSVTGHPVHHELRKNGEMYSFPITIGNNVWIGSHVVINPGVTIGDNSVIGAGSIVTKDIPPNVVAAGVPCRVIREINDRDKHYYFKDYKVES 201
               SCOP domains d1kqaa_ A: Galactoside acetyltransferase                                                                                                                                                                 SCOP domains
               CATH domains 1kqaA00 A:2-201 Hexapeptide repeat proteins                                                                                                                                                              CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhh........hhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhh.......ee...eee.....eee....ee...eeee....eee....ee....eee.ee.............ee..eee....ee....ee....ee....ee....ee.......eeee....eeeee.hhhhh........... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------HEXAPEP_TRANSFERASES         --------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1kqa A   2 NMPMTERIRAGKLFTDMCEGLPEKRLRGKTLMYEFNHSHPSEVEKRESLIKEMFATVGENAWVEPPVYFSYGSNIHIGRNFYANFNLTIVDDYTVTIGDNVLIAPNVTLSVTGHPVHHELRKNGEMYSFPITIGNNVWIGSHVVINPGVTIGDNSVIGAGSIVTKDIPPNVVAAGVPCRVIREINDRDKHYYFKDYKVES 201
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201


Chain B from PDB  Type:PROTEIN  Length:200
 aligned with THGA_ECOLI | P07464 from UniProtKB/Swiss-Prot  Length:203

    Alignment length:200
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201
           THGA_ECOLI     2 NMPMTERIRAGKLFTDMCEGLPEKRLRGKTLMYEFNHSHPSEVEKRESLIKEMFATVGENAWVEPPVYFSYGSNIHIGRNFYANFNLTIVDDYTVTIGDNVLIAPNVTLSVTGHPVHHELRKNGEMYSFPITIGNNVWIGSHVVINPGVTIGDNSVIGAGSIVTKDIPPNVVAAGVPCRVIREINDRDKHYYFKDYKVES 201
               SCOP domains d1kqab_ B: Galactoside acetyltransferase                                                                                                                                                                 SCOP domains
               CATH domains 1kqaB00 B:2-201 Hexapeptide repeat proteins                                                                                                                                                              CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhh.........hhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhh.......ee...eee.....eee....ee...eeee....eee....ee....eee.ee.............ee..eee....ee....ee....ee....ee....ee.......eeee....eeeee..hhhhheee..ee... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------HEXAPEP_TRANSFERASES         --------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1kqa B   2 NMPMTERIRAGKLFTDMCEGLPEKRLRGKTLMYEFNHSHPSEVEKRESLIKEMFATVGENAWVEPPVYFSYGSNIHIGRNFYANFNLTIVDDYTVTIGDNVLIAPNVTLSVTGHPVHHELRKNGEMYSFPITIGNNVWIGSHVVINPGVTIGDNSVIGAGSIVTKDIPPNVVAAGVPCRVIREINDRDKHYYFKDYKVES 201
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201


Chain C from PDB  Type:PROTEIN  Length:200
 aligned with THGA_ECOLI | P07464 from UniProtKB/Swiss-Prot  Length:203

    Alignment length:200
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201
           THGA_ECOLI     2 NMPMTERIRAGKLFTDMCEGLPEKRLRGKTLMYEFNHSHPSEVEKRESLIKEMFATVGENAWVEPPVYFSYGSNIHIGRNFYANFNLTIVDDYTVTIGDNVLIAPNVTLSVTGHPVHHELRKNGEMYSFPITIGNNVWIGSHVVINPGVTIGDNSVIGAGSIVTKDIPPNVVAAGVPCRVIREINDRDKHYYFKDYKVES 201
               SCOP domains d1kqac_ C: Galactoside acetyltransferase                                                                                                                                                                 SCOP domains
               CATH domains 1kqaC00 C:2-201 Hexapeptide repeat proteins                                                                                                                                                              CATH domains
           Pfam domains (1) ----Mac-1kqaC04 C:6-60                                     ----------------------------------------------------------------------Hexapep-1kqaC01 C:131-166           ----------------------------------- Pfam domains (1)
           Pfam domains (2) ----Mac-1kqaC05 C:6-60                                     ----------------------------------------------------------------------Hexapep-1kqaC02 C:131-166           ----------------------------------- Pfam domains (2)
           Pfam domains (3) ----Mac-1kqaC06 C:6-60                                     ----------------------------------------------------------------------Hexapep-1kqaC03 C:131-166           ----------------------------------- Pfam domains (3)
         Sec.struct. author ..hhhhhhhh.........hhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhh.ee....ee...eee.....eee....ee...eeee....eee....ee....eee.ee...hhhhh.....ee..eee....ee....ee....ee....ee....ee.......eeee....eeeee..hhhhh.......... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------HEXAPEP_TRANSFERASES         --------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1kqa C   2 NMPMTERIRAGKLFTDMCEGLPEKRLRGKTLMYEFNHSHPSEVEKRESLIKEMFATVGENAWVEPPVYFSYGSNIHIGRNFYANFNLTIVDDYTVTIGDNVLIAPNVTLSVTGHPVHHELRKNGEMYSFPITIGNNVWIGSHVVINPGVTIGDNSVIGAGSIVTKDIPPNVVAAGVPCRVIREINDRDKHYYFKDYKVES 201
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201
   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 '|'

 Classification and Annotation

(-) SCOP Domains  (1, 3)

Asymmetric/Biological Unit
(-)
Class: All beta proteins (24004)

(-) CATH Domains  (1, 3)

Asymmetric/Biological Unit
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (2, 6)

Asymmetric/Biological Unit
(-)
Clan: no clan defined [family: Hexapep] (52)
(-)
Clan: no clan defined [family: Mac] (5)

(-) Gene Ontology  (6, 6)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B,C   (THGA_ECOLI | P07464)
molecular function
    GO:0016407    acetyltransferase activity    Catalysis of the transfer of an acetyl group to an acceptor molecule.
    GO:0008870    galactoside O-acetyltransferase activity    Catalysis of the reaction: acetyl-CoA + a beta-D-galactoside = CoA + a 6-acetyl-beta-D-galactoside.
    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:0005989    lactose biosynthetic process    The chemical reactions and pathways resulting in the formation of lactose, the disaccharide galactopyranosyl-glucose.
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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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        THGA_ECOLI | P07464: 1krr 1kru 1krv

(-) Related Entries Specified in the PDB File

1krr GALACTOSIDE ACETYLTRANSFERASE IN COMPLEX WITH ACETYL- COENZYME A
1kru GALACTOSIDE ACETYLTRANSFERASE IN COMPLEX WITH IPTG AND COENZYME A
1krv GALACTOSIDE ACETYLTRANSFERASE IN COMPLEX WITH COA AND PNP- BETA-GAL