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(-) Description

Title :  NEISSERIA GONORRHOEAE CARBONIC ANHYDRASE
 
Authors :  S. Huang, Y. Xue, L. Chirica, S. Lindskog, B. -H. Jonsson
Date :  22 Mar 98  (Deposition) - 09 Dec 98  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.90
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Lyase, Carbonic Anhydrase, Neisseria Gonorrhoeae, Structural Trimming (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  S. Huang, Y. Xue, E. Sauer-Eriksson, L. Chirica, S. Lindskog, B. H. Jonsson
Crystal Structure Of Carbonic Anhydrase From Neisseria Gonorrhoeae And Its Complex With The Inhibitor Acetazolamide.
J. Mol. Biol. V. 283 301 1998
PubMed-ID: 9761692  |  Reference-DOI: 10.1006/JMBI.1998.2077
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - CARBONIC ANHYDRASE
    Chains: A, B
    EC Number: 4.2.1.1
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Taxid: 562
    Organism Scientific: NEISSERIA GONORRHOEAE
    Organism Taxid: 485

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit : AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 2)

Asymmetric/Biological Unit (1, 2)
No.NameCountTypeFull Name
1ZN2Ligand/IonZINC ION

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREHIS A:92 , HIS A:94 , HIS A:111 , HOH A:303BINDING SITE FOR RESIDUE ZN A 301
2AC2SOFTWAREHIS B:92 , HIS B:94 , HIS B:111 , HOH B:305BINDING SITE FOR RESIDUE ZN B 302

(-) SS Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1A:28 -A:181
2B:28 -B:181

(-) Cis Peptide Bonds  (6, 6)

Asymmetric/Biological Unit
No.Residues
1Ser A:35 -Pro A:36
2Val A:95 -Pro A:96
3Pro A:179 -Pro A:180
4Ser B:35 -Pro B:36
5Val B:95 -Pro B:96
6Pro B:179 -Pro B:180

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (2, 3)

Asymmetric/Biological Unit (2, 3)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1ALPHA_CA_2PS51144 Alpha-carbonic anhydrases profile.CAH_NEIGO31-252  1A:5-226
2ALPHA_CA_1PS00162 Alpha-carbonic anhydrases signature.CAH_NEIGO123-139
 		  2A:97-113
B:97-113

(-) Exons   (0, 0)

(no "Exon" information available for 1KOQ)

(-) 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:222
 aligned with CAH_NEIGO | Q50940 from UniProtKB/Swiss-Prot  Length:252

    Alignment length:222
                                    40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250  
            CAH_NEIGO    31 THWGYTGHDSPESWGNLSEEFRLCSTGKNQSPVNITETVSGKLPAIKVNYKPSMVDVENNGHTIQVNYPEGGNTLTVNGRTYTLKQFHFHVPSENQIKGRTFPMEAHFVHLDENKQPLVLAVLYEAGKTNGRLSSIWNVMPMTAGKVKLNQPFDASTLLPKRLKYYRFAGSLTTPPCTEGVSWLVLKTYDHIDQAQAEKFTRAVGSENNRPVQPLNARVVIE 252
               SCOP domains d1koqa_ A: Carbonic anhydrase                                                                                                                                                                                                  SCOP domains
               CATH domains 1koqA00 A:5-226 Carbonic Anhydrase II                                                                                                                                                                                          CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ......hhh.hhhhhhh.hhhhhhhh...................eeee.....eeeee....eeeee.....eeee..eeeeeeeeeee.............eeeeeeee.....eeeeeeeeee.......hhhhhh.....eeee......hhhh......eeeeeee.......eeeeeeee...eee.hhhhhhhhhhh.................. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                PROSITE (1) ALPHA_CA_2  PDB: A:5-226 UniProt: 31-252                                                                                                                                                                                       PROSITE (1)
                PROSITE (2) --------------------------------------------------------------------------------------------ALPHA_CA_1       ----------------------------------------------------------------------------------------------------------------- PROSITE (2)
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1koq A   5 THWGYTGHDSPESWGNLSEEFRLCSTGKNQSPVNITETVSGKLPAIKVNYKPSMVDVENNGHTIQVNYPEGGNTLTVNGRTYTLKQFHFHVPSENQIKGRTFPMEAHFVHLDENKQPLVLAVLYEAGKTNGRLSSIWNVMPMTAGKVKLNQPFDASTLLPKRLKYYRFAGSLTTPPCTEGVSWLVLKTYDHIDQAQAEKFTRAVGSENNRPVQPLNARVVIE 226
                                    14        24        34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224  


Chain B from PDB  Type:PROTEIN  Length:221
 aligned with CAH_NEIGO | Q50940 from UniProtKB/Swiss-Prot  Length:252

    Alignment length:221
                                    41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251 
            CAH_NEIGO    32 HWGYTGHDSPESWGNLSEEFRLCSTGKNQSPVNITETVSGKLPAIKVNYKPSMVDVENNGHTIQVNYPEGGNTLTVNGRTYTLKQFHFHVPSENQIKGRTFPMEAHFVHLDENKQPLVLAVLYEAGKTNGRLSSIWNVMPMTAGKVKLNQPFDASTLLPKRLKYYRFAGSLTTPPCTEGVSWLVLKTYDHIDQAQAEKFTRAVGSENNRPVQPLNARVVIE 252
               SCOP domains d1koqb_ B: Carbonic anhydrase                                                                                                                                                                                                 SCOP domains
               CATH domains 1koqB00 B:6-226 Carbonic Anhydrase II                                                                                                                                                                                         CATH domains
           Pfam domains (1) -Carb_anhydrase-1koqB01 B:7-226                                                                                                                                                                                               Pfam domains (1)
           Pfam domains (2) -Carb_anhydrase-1koqB02 B:7-226                                                                                                                                                                                               Pfam domains (2)
         Sec.struct. author .........hhhhhh..hhhhhhhh....................eee......eeee....eeee......eeee..eeeeeeeeeee.............eeeeeeee.....eeeeeeeeee.......hhhhhh.....eeee......hhhh......eeeeeee.......eeeeeeee...eee.hhhhhhhhhhh.................. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ALPHA_CA_2  PDB: - UniProt: 31-252                                                                                                                                                                                            PROSITE (1)
                PROSITE (2) -------------------------------------------------------------------------------------------ALPHA_CA_1       ----------------------------------------------------------------------------------------------------------------- PROSITE (2)
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1koq B   6 HWGYTGHDSPESWGNLSEEFRLCSTGKNQSPVNITETVSGKLPAIKVNYKPSMVDVENNGHTIQVNYPEGGNTLTVNGRTYTLKQFHFHVPSENQIKGRTFPMEAHFVHLDENKQPLVLAVLYEAGKTNGRLSSIWNVMPMTAGKVKLNQPFDASTLLPKRLKYYRFAGSLTTPPCTEGVSWLVLKTYDHIDQAQAEKFTRAVGSENNRPVQPLNARVVIE 226
                                    15        25        35        45        55        65        75        85        95       105       115       125       135       145       155       165       175       185       195       205       215       225
   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, 2)

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

(-) CATH Domains  (1, 2)

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

(-) Pfam Domains  (1, 2)

Asymmetric/Biological Unit
(-)
Clan: no clan defined [family: Carb_anhydrase] (168)

(-) Gene Ontology  (6, 6)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B   (CAH_NEIGO | Q50940)
molecular function
    GO:0004089    carbonate dehydratase activity    Catalysis of the reaction: H2CO3 = CO2 + H2O.
    GO:0016829    lyase activity    Catalysis of the cleavage of C-C, C-O, C-N and other bonds by other means than by hydrolysis or oxidation, or conversely adding a group to a double bond. They differ from other enzymes in that two substrates are involved in one reaction direction, but only one in the other direction. When acting on the single substrate, a molecule is eliminated and this generates either a new double bond or a new ring.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0008270    zinc ion binding    Interacting selectively and non-covalently with zinc (Zn) ions.
biological process
    GO:0006730    one-carbon metabolic process    The chemical reactions and pathways involving the transfer of one-carbon units in various oxidation states.
cellular component
    GO:0042597    periplasmic space    The region between the inner (cytoplasmic) and outer membrane (Gram-negative Bacteria) or cytoplasmic membrane and cell wall (Fungi and Gram-positive Bacteria).

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 Related Entries

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        CAH_NEIGO | Q50940: 1kop

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