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(-) Description

Title :  CRYSTAL STRUCTURE OF A C49 PHOSPHOLIPASE A2 FROM INDIAN COBRA REVEALS CARBOHYDRATE BINDING IN THE HYDROPHOBIC CHANNEL
 
Authors :  T. Jabeen, J. Jasti, N. Singh, R. K. Singh, S. Sharma, P. Kaur, T. P. Singh
Date :  30 Mar 03  (Deposition) - 20 May 03  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.30
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A,B  (1x)
Biol. Unit 2:  A,B  (2x)
Biol. Unit 3:  A,B  (2x)
Keywords :  Phospholipase, Enzyme, Phospholipids, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  T. Jabeen, J. Jasti, N. Singh, R. K. Singh, S. Sharma, P. Kaur, T. P. Sing
Crystal Structure Of A C49 Phospholipase A2 From Indian Cobra Reveals Carbohydrate Binding In The Hydrophobic Channel
To Be Published
PubMed: search

(-) Compounds

Molecule 1 - PHOSPHOLIPASE A2
    ChainsA
    EC Number3.1.1.4
    Organism CommonINDIAN COBRA
    Organism ScientificNAJA NAJA
    Organism Taxid35670
    SecretionVENOM
 
Molecule 2 - PHOSPHOLIPASE A2
    ChainsB
    EC Number3.1.1.4
    Organism CommonINDIAN COBRA
    Organism ScientificNAJA NAJA
    Organism Taxid35670
    SecretionVENOM

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit AB
Biological Unit 1 (1x)AB
Biological Unit 2 (2x)AB
Biological Unit 3 (2x)AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 3)

Asymmetric Unit (2, 3)
No.NameCountTypeFull Name
1NAG1Ligand/IonN-ACETYL-D-GLUCOSAMINE
2ZN2Ligand/IonZINC ION
Biological Unit 1 (1, 1)
No.NameCountTypeFull Name
1NAG1Ligand/IonN-ACETYL-D-GLUCOSAMINE
2ZN-1Ligand/IonZINC ION
Biological Unit 2 (1, 2)
No.NameCountTypeFull Name
1NAG2Ligand/IonN-ACETYL-D-GLUCOSAMINE
2ZN-1Ligand/IonZINC ION
Biological Unit 3 (1, 2)
No.NameCountTypeFull Name
1NAG2Ligand/IonN-ACETYL-D-GLUCOSAMINE
2ZN-1Ligand/IonZINC ION

(-) Sites  (3, 3)

Asymmetric Unit (3, 3)
No.NameEvidenceResiduesDescription
1AC1SOFTWARETHR A:2 , PHE A:5 , TRP A:19 , PHE A:22 , TYR A:28 , CYS A:29 , GLY A:30 , CYS A:32 , HIS A:48 , LYS A:64 , HOH A:2082BINDING SITE FOR RESIDUE NAG A 2001
2AC2SOFTWAREASP A:24 , ASN A:112 , HOH A:2002 , ASP B:24 , ASN B:112 , HOH B:200BINDING SITE FOR RESIDUE ZN A 1001
3AC3SOFTWAREGLN A:71 , ASN A:120BINDING SITE FOR RESIDUE ZN A 1002

(-) SS Bonds  (15, 15)

Asymmetric Unit
No.Residues
1A:11 -A:72
2A:27 -A:119
3A:29 -A:45
4A:32 -A:49
5A:44 -A:100
6A:51 -A:93
7A:61 -A:86
8A:79 -A:91
9B:11 -B:72
10B:27 -B:119
11B:29 -B:45
12B:44 -B:100
13B:51 -B:93
14B:61 -B:86
15B:79 -B:91

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1OWS)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (2, 4)

Asymmetric Unit (2, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PA2_HISPS00118 Phospholipase A2 histidine active site.PA2A2_NAJNA43-50
 
  2A:44-51
B:44-51
2PA2_ASPPS00119 Phospholipase A2 aspartic acid active site.PA2A2_NAJNA89-99
 
  2A:91-100
B:91-100
Biological Unit 1 (2, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PA2_HISPS00118 Phospholipase A2 histidine active site.PA2A2_NAJNA43-50
 
  2A:44-51
B:44-51
2PA2_ASPPS00119 Phospholipase A2 aspartic acid active site.PA2A2_NAJNA89-99
 
  2A:91-100
B:91-100
Biological Unit 2 (2, 8)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PA2_HISPS00118 Phospholipase A2 histidine active site.PA2A2_NAJNA43-50
 
  4A:44-51
B:44-51
2PA2_ASPPS00119 Phospholipase A2 aspartic acid active site.PA2A2_NAJNA89-99
 
  4A:91-100
B:91-100
Biological Unit 3 (2, 8)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PA2_HISPS00118 Phospholipase A2 histidine active site.PA2A2_NAJNA43-50
 
  4A:44-51
B:44-51
2PA2_ASPPS00119 Phospholipase A2 aspartic acid active site.PA2A2_NAJNA89-99
 
  4A:91-100
B:91-100

(-) Exons   (0, 0)

(no "Exon" information available for 1OWS)

(-) 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:118
 aligned with PA2A2_NAJNA | P15445 from UniProtKB/Swiss-Prot  Length:119

    Alignment length:119
                                    10        20        30        40        50        60        70        80        90       100       110         
          PA2A2_NAJNA     1 NLYQFKNMIKCTVPSRSWWDFADYGCYCGRGGSGTPVDDLDRCCQVHDNCYNEAEKISGCWPYFKTYSYECSQGTLTCKGDNNACAASVCDCDRLAAICFAGAPYNDNNYNIDLKARCQ 119
               SCOP domains d1owsa_ A: Snake phospholipas e A2                                                                                      SCOP domains
               CATH domains 1owsA00 A:1-120 Phospholipase  A2                                                                                       CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhh...hhhhhh.......-.......hhhhhhhhhhhhhhhhhh.............eeee..eeee....hhhhhhhhhhhhhhhhhhhhh..hhhhh..hhhhhh. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------PA2_HIS --------------------------------------PA2_ASP    -------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------- Transcript
                 1ows A   1 NTYQFRNMIECTVPSRSWWDFADYGCYCG-CGSGTPTDDLDRCCQVHCNCYRQAGEISGCRPKFKTYTYQCSGGTLTCKGNNNACAASSCDCDRLAAICFAGAPYNDNNYNIDLKARCN 120
                                    10    ||  21        |-|       41        51        61        71        81        91       101       111         
                                         15|           30 |                                                                                        
                                          17             32                                                                                        

Chain B from PDB  Type:PROTEIN  Length:118
 aligned with PA2A2_NAJNA | P15445 from UniProtKB/Swiss-Prot  Length:119

    Alignment length:119
                                    10        20        30        40        50        60        70        80        90       100       110         
          PA2A2_NAJNA     1 NLYQFKNMIKCTVPSRSWWDFADYGCYCGRGGSGTPVDDLDRCCQVHDNCYNEAEKISGCWPYFKTYSYECSQGTLTCKGDNNACAASVCDCDRLAAICFAGAPYNDNNYNIDLKARCQ 119
               SCOP domains d1owsb_ B: Snake phospholipase  A2                                                                                      SCOP domains
               CATH domains 1owsB00 B:1-120 Phospholipase  A2                                                                                       CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhh....hhhhhh.......-......hhhhhhhhhhhhhhhhhhh............eeee..eeee....hhhhhhhhhhhhhhhhhhhhh..hhhhh..hhhhhh. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------PA2_HIS --------------------------------------PA2_ASP    -------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------- Transcript
                 1ows B   1 NIKQFNNMIECTVPARSWWDFADYGCYCGS-GSGSPTDDLDRCCQTHDNCYGAGGGSTGCAPKSRTYTYQCSQGTLTCSGENSACAATTCDCDRLAAICFAGAPYNDTNYNIDLKSRCQ 120
                                    10    ||  21        31 |      41        51        61        71        81        91       101       111         
                                         15|            31 |                                                                                       
                                          17              33                                                                                       

   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  (2, 2)

Asymmetric Unit

(-) CATH Domains  (1, 2)

Asymmetric Unit

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1OWS)

(-) Gene Ontology  (7, 7)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (PA2A2_NAJNA | P15445)
molecular function
    GO:0005509    calcium ion binding    Interacting selectively and non-covalently with calcium ions (Ca2+).
    GO:0016787    hydrolase activity    Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0004623    phospholipase A2 activity    Catalysis of the reaction: phosphatidylcholine + H2O = 1-acylglycerophosphocholine + a carboxylate.
biological process
    GO:0016042    lipid catabolic process    The chemical reactions and pathways resulting in the breakdown 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:0005576    extracellular region    The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.

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 Related Entries

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

UniProtKB/Swiss-Prot
        PA2A2_NAJNA | P154451a3d 1a3f 1psh 2wq5

(-) Related Entries Specified in the PDB File

1lff CRYSTAL STRUCTURE OF AN ACIDIC PHOSPHOLIPASE A2 FROM NAJA NAJA SAGITTIFERA AT 1.5 A RESOLUTION
1lfj X-RAY CRYSTAL STRUCTURE OF A COMPLEX FORMED BETWEEN TWO HOMOLOGOUS ISOFORMS OF PHOSPHOLIPASE A2 FROM NAJA NAJA SAGITTIFERA: PRINCIPLE OF MOLECULAR ASSOCIATION AND INACTIVATION
1ln8 CRYSTAL STRUCTURE OF A NEW ISOFORM OF PHOSPHOLIPASE A2 FROM NAJA NAJA SAGITTIFERA AT 1.6 A RESOLUTION
1mh2 CRYSTAL STRUCTURE OF A ZINC CONTAINING DIMER OF PHOSPHOLIPASE A2 FROM THE VENOM OF INDIAN COBRA (NAJA NAJA SAGITTIFERA)
1mh7 CRYSTAL STRUCTURE OF A CALCIUM-FREE ISOFORM OF PHOSPHOLIPASE A2 FROM NAJA NAJA SAGITTIFERA AT 2.0 A RESOLUTION
1mh8 CRYSTAL STRUCTURE OF A PHOPHOLIPASE A2 MONOMER WITH ISOLEUCINE AT SECOND POSITION