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(-) Description

Title :  LYSOZYME FROM ECHIDNA MILK (TACHYGLOSSUS ACULEATUS)
 
Authors :  J. M. Guss
Date :  13 Oct 96  (Deposition) - 21 Apr 97  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.90
Chains :  Asym./Biol. Unit :  A
Keywords :  Lysozyme, Calcium-Binding (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  J. M. Guss, M. Messer, M. Costello, K. Hardy, V. Kumar
Structure Of The Calcium-Binding Echidna Milk Lysozyme At 1. 9 A Resolution.
Acta Crystallogr. , Sect. D V. 53 355 1997
PubMed-ID: 15299900  |  Reference-DOI: 10.1107/S0907444996015831
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - LYSOZYME
    ChainsA
    EC Number3.2.1.17
    Organism CommonAUSTRALIAN ECHIDNA
    Organism ScientificTACHYGLOSSUS ACULEATUS
    Organism Taxid9261
    SecretionMILK
    VariantVARIANT I

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit A

Summary Information (see also Sequences/Alignments below)

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

Asymmetric/Biological Unit (1, 1)
No.NameCountTypeFull Name
1CA1Ligand/IonCALCIUM ION

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWARELYS A:82 , ASP A:85 , ASP A:87 , ASP A:90 , ASP A:91 , HOH A:128 , HOH A:130BINDING SITE FOR RESIDUE CA A 126
2CABUNKNOWNLYS A:82 , ASP A:85 , ASP A:87 , ASP A:90 , ASP A:91 , HOH A:128 , HOH A:130CA BINDING SITE.

(-) SS Bonds  (4, 4)

Asymmetric/Biological Unit
No.Residues
1A:9 -A:125
2A:30 -A:115
3A:64 -A:80
4A:76 -A:94

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (2, 2)

Asymmetric/Biological Unit (2, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1LACTALBUMIN_LYSOZYME_2PS51348 Alpha-lactalbumin / lysozyme C family profile.LYSC1_TACAC1-125  1A:1-125
2LACTALBUMIN_LYSOZYME_1PS00128 Alpha-lactalbumin / lysozyme C signature.LYSC1_TACAC76-94  1A:76-94

(-) Exons   (0, 0)

(no "Exon" information available for 1JUG)

(-) 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:125
 aligned with LYSC1_TACAC | P37156 from UniProtKB/Swiss-Prot  Length:125

    Alignment length:125
                                    10        20        30        40        50        60        70        80        90       100       110       120     
          LYSC1_TACAC     1 KILKKQELCKNLVAQGMNGYQHITLPNWVCTAFHESSYNTRATNHNTDGSTDYGILQINSRYWCHDGKTPGSKNACNISCSKLLDDDITDDLKCAKKIAGEAKGLTPWVAWKSKCRGHDLSKFKC 125
               SCOP domains d1juga_ A: Lysozyme                                                                                                           SCOP domains
               CATH domains 1jugA00 A:1-125  [code=1.10.530.10, no name defined]                                                                          CATH domains
               Pfam domains Lys-1jugA01 A:1-125                                                                                                           Pfam domains
         Sec.struct. author ....hhhhhhhhhh.....hhh..hhhhhhhhhhhh......eee.....eee..........................hhhh.....hhhhhhhhhhhhhh......hhhhhh......hhh.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) LACTALBUMIN_LYSOZYME_2  PDB: A:1-125 UniProt: 1-125                                                                           PROSITE (1)
                PROSITE (2) ---------------------------------------------------------------------------LACTALBUMIN_LYSOZYM------------------------------- PROSITE (2)
                 Transcript ----------------------------------------------------------------------------------------------------------------------------- Transcript
                 1jug A   1 KILKKQELCKNLVAQGMNGYQHITLPNWVCTAFHESSYNTRATNHNTDGSTDYGILQINSRYWCHDGKTPGSKNACNISCSKLLDDDITDDLKCAKKIAGEAKGLTPWVAWKSKCRGHDLSKFKC 125
                                    10        20        30        40        50        60        70        80        90       100       110       120     

   Legend:   → Mismatch (orange background)
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  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, 1)

Asymmetric/Biological Unit

(-) CATH Domains  (1, 1)

Asymmetric/Biological Unit

(-) Pfam Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Clan: Lysozyme (266)

(-) Gene Ontology  (8, 8)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (LYSC1_TACAC | P37156)
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: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:0016798    hydrolase activity, acting on glycosyl bonds    Catalysis of the hydrolysis of any glycosyl bond.
    GO:0003796    lysozyme activity    Catalysis of the hydrolysis of the beta-(1->4) linkages between N-acetylmuramic acid and N-acetyl-D-glucosamine residues in a peptidoglycan.
biological process
    GO:0019835    cytolysis    The rupture of cell membranes and the loss of cytoplasm.
    GO:0042742    defense response to bacterium    Reactions triggered in response to the presence of a bacterium that act to protect the cell or organism.
    GO:0008152    metabolic process    The chemical reactions and pathways, including anabolism and catabolism, by which living organisms transform chemical substances. Metabolic processes typically transform small molecules, but also include macromolecular processes such as DNA repair and replication, and protein synthesis and degradation.
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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