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(-) Description

Title :  CRYSTAL STRUCTURE OF SIALIC ACID SYNTHASE (NEUB) IN COMPLEX WITH MN2+ AND MALATE FROM NEISSERIA MENINGITIDIS
 
Authors :  J. Gunawan, D. Simard, M. Gilbert, A. L. Lovering, W. W. Wakarchuk, M. E. N. C. Strynadka
Date :  26 Oct 04  (Deposition) - 02 Nov 04  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.90
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (2x)
Keywords :  Tim Barrel, Antifreeze-Like Domain, Domain-Swapped Dimer, Biosynthetic Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  J. Gunawan, D. Simard, M. Gilbert, A. L. Lovering, W. W. Wakarchuk, M. E. Tanner, N. C. Strynadka
Structural And Mechanistic Analysis Of Sialic Acid Synthase Neub From Neisseria Meningitidis In Complex With Mn2+, Phosphoenolpyruvate, And N-Acetylmannosaminitol.
J. Biol. Chem. V. 280 3555 2005
PubMed-ID: 15516336  |  Reference-DOI: 10.1074/JBC.M411942200

(-) Compounds

Molecule 1 - POLYSIALIC ACID CAPSULE BIOSYNTHESIS PROTEIN SIAC
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI BL21
    Expression System Plasmid: PCWORI+
    Expression System Strain: BL21
    Expression System Taxid: 511693
    Expression System Vector Type: PLASMID
    Gene: NEUB
    Organism Scientific: NEISSERIA MENINGITIDIS
    Organism Taxid: 487
    Synonym: SIALIC ACID SYNTHASE, NEUB

 Structural Features

(-) Chains, Units

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

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 2)

Asymmetric Unit (2, 2)
No.NameCountTypeFull Name
1MLT1Ligand/IonMALATE ION
2MN1Ligand/IonMANGANESE (II) ION
Biological Unit 1 (1, 2)
No.NameCountTypeFull Name
1MLT2Ligand/IonMALATE ION
2MN-1Ligand/IonMANGANESE (II) ION

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWARETYR A:186 , HIS A:215 , HIS A:236 , MLT A:3222BINDING SITE FOR RESIDUE MN A 1001
2AC2SOFTWAREGLU A:25 , LYS A:53 , GLN A:55 , THR A:110 , LYS A:129 , ASN A:184 , TYR A:186 , HIS A:215 , HIS A:236 , MN A:1001 , HOH A:3345BINDING SITE FOR RESIDUE MLT A 3222

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (2, 2)

Asymmetric Unit
No.Residues
1Tyr A:186 -Pro A:187
2Arg A:314 -Pro A:315

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1XUU)

(-) Exons   (0, 0)

(no "Exon" information available for 1XUU)

(-) Sequences/Alignments

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:348
 aligned with Q57265_NEIME | Q57265 from UniProtKB/TrEMBL  Length:349

    Alignment length:348
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341        
         Q57265_NEIME     2 QNNNEFKIGNRSVGYNHEPLIICEIGINHEGSLKTAFEMVDAAYNAGAEVVKHQTHIVEDEMSDEAKQVIPGNADVSIYEIMERCALNEEDEIKLKEYVESKGMIFISTPFSRAAALRLQRMDIPAYKIGSGECNNYPLIKLVASFGKPIILSTGMNSIESIKKSVEIIREAGVPYALLHCTNIYPTPYEDVRLGGMNDLSEAFPDAIIGLSDHTLDNYACLGAVALGGSILERHFTDRMDRPGPDIVCSMNPDTFKELKQGAHALKLARGGKKDTIIAGEKPTKDFAFASVVADKDIKKGELLSGDNLWVKRPGNGDFSVNEYETLFGKVAACNIRKGAQIKKTDIE 349
               SCOP domains d1xuua2 A:2-281 Capsule biosynthesis protein SiaC, N-terminal domain                                                                                                                                                                                                                    d1xuua1 A:282-349                                                    SCOP domains
               CATH domains ----1xuuA01 A:6-276 Aldolase class I                                                                                                                                                                                                                                               ------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------NeuB-1xuuA02 A:40-276                                                                                                                                                                                                                        --------------SAF-1xuuA01 A:291-349                                       Pfam domains
         Sec.struct. author .....eee..eee......eeeeeee.....hhhhhhhhhhhhhhhh..eeeeee.hhhhhhhhhhhhh.......hhhhhhhhhh.hhhhhhhhhhhhhhh..eeeeee.hhhhhhhhhhhh...eeehhhhh.hhhhhhhhhh....eeee....hhhhhhhhhhhhhhhh..eeeee.......hhhhhhhhhhhhhhhhh...eeeee.....hhhhhhhhhhh..eeeee..........hhhhh.hhhhhhhhhhhhhhhhhhh.......hhhhhhhhhhhh.eeee..............eeee.......hhhhhhhhh..............hhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1xuu A   2 QNNNEFKIGNRSVGYNHEPLIICEIGINHEGSLKTAFEMVDAAYNAGAEVVKHQTHIVEDEMSDEAKQVIPGNADVSIYEIMERCALNEEDEIKLKEYVESKGMIFISTPFSRAAALRLQRMDIPAYKIGSGECNNYPLIKLVASFGKPIILSTGMNSIESIKKSVEIIREAGVPYALLHCTNIYPTPYEDVRLGGMNDLSEAFPDAIIGLSDHTLDNYACLGAVALGGSILERHFTDRMDRPGPDIVCSMNPDTFKELKQGAHALKLARGGKKDTIIAGEKPTKDFAFASVVADKDIKKGELLSGDNLWVKRPGNGDFSVNEYETLFGKVAACNIRKGAQIKKTDIE 349
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341
   Legend:   → Mismatch (orange background)
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  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (2, 2)

Asymmetric Unit
(-)
Class: All beta proteins (24004)
(-)
Class: Alpha and beta proteins (a/b) (23833)

(-) CATH Domains  (1, 1)

Asymmetric Unit
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (2, 2)

Asymmetric Unit
(-)
Clan: AFP_III-like (6)
(-)
Clan: TIM_barrel (694)

(-) Gene Ontology  (3, 3)

Asymmetric Unit(hide GO term definitions)
Chain A   (Q57265_NEIME | Q57265)
molecular function
    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:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
biological process
    GO:0016051    carbohydrate biosynthetic process    The chemical reactions and pathways resulting in the formation of carbohydrates, any of a group of organic compounds based of the general formula Cx(H2O)y.

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  1xuu
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  Q57265_NEIME | Q57265
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 Related Entries

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

UniProtKB/TrEMBL
        Q57265_NEIME | Q57265: 1xuz 2zdr 3cm4 4ipi 4ipj

(-) Related Entries Specified in the PDB File

1xuz