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(-) Description

Title :  ALPHA-LACTALBUMIN
 
Authors :  A. C. W. Pike, K. Brew, K. R. Acharya
Date :  13 Jun 96  (Deposition) - 07 Jul 97  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.90
Chains :  Asym./Biol. Unit :  A
Keywords :  Lactose Synthase Component, Calcium Binding Metalloprotein, Lactose, Glycoprotein (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  A. C. Pike, K. Brew, K. R. Acharya
Crystal Structures Of Guinea-Pig, Goat And Bovine Alpha-Lactalbumin Highlight The Enhanced Conformational Flexibility Of Regions That Are Significant For Its Action In Lactose Synthase.
Structure V. 4 691 1996
PubMed-ID: 8805552  |  Reference-DOI: 10.1016/S0969-2126(96)00075-5
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - ALPHA-LACTALBUMIN
    ChainsA
    EC Number2.4.1.22
    Organism CommonDOMESTIC GUINEA PIG
    Organism ScientificCAVIA PORCELLUS
    Organism Taxid10141
    SecretionMILK

 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  (1, 1)

Asymmetric Unit (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWARELYS A:79 , ASP A:82 , ASP A:84 , ASP A:87 , ASP A:88 , HOH A:131 , HOH A:144BINDING SITE FOR RESIDUE CA A 124

(-) SS Bonds  (4, 4)

Asymmetric/Biological Unit
No.Residues
1A:6 -A:120
2A:28 -A:111
3A:61 -A:77
4A:73 -A:91

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (2, 2)

Asymmetric/Biological Unit (2, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1LACTALBUMIN_LYSOZYME_2PS51348 Alpha-lactalbumin / lysozyme C family profile.LALBA_CAVPO20-142  1A:1-123
2LACTALBUMIN_LYSOZYME_1PS00128 Alpha-lactalbumin / lysozyme C signature.LALBA_CAVPO92-110  1A:73-91

(-) Exons   (0, 0)

(no "Exon" information available for 1HFX)

(-) 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
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Chain A from PDB  Type:PROTEIN  Length:123
 aligned with LALBA_CAVPO | P00713 from UniProtKB/Swiss-Prot  Length:142

    Alignment length:123
                                    29        39        49        59        69        79        89        99       109       119       129       139   
          LALBA_CAVPO    20 KQLTKCALSHELNDLAGYRDITLPEWLCIIFHISGYDTQAIVKNSDHKEYGLFQINDKDFCESSTTVQSRNICDISCDKLLDDDLTDDIMCVKKILDIKGIDYWLAHKPLCSDKLEQWYCEAQ 142
               SCOP domains d1hfxa_ A: alpha-Lactalbumin                                                                                                SCOP domains
               CATH domains 1hfxA00 A:1-123  [code=1.10.530.10, no name defined]                                                                        CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhh......hhh..hhhhhhhhhhhh......eeee..eeee..........................hhhh.....hhhhhhhhhhhhh..hhhhh.........hhhh..... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) LACTALBUMIN_LYSOZYME_2  PDB: A:1-123 UniProt: 20-142                                                                        PROSITE (1)
                PROSITE (2) ------------------------------------------------------------------------LACTALBUMIN_LYSOZYM-------------------------------- PROSITE (2)
                 Transcript --------------------------------------------------------------------------------------------------------------------------- Transcript
                 1hfx A   1 KQLTKCALSHELNDLAGYRDITLPEWLCIIFHISGYDTQAIVKNSDHKEYGLFQINDKDFCESSTTVQSRNICDISCDKLLDDDLTDDIMCVKKILDIKGIDYWLAHKPLCSDKLEQWYCEAQ 123
                                    10        20        30        40        50        60        70        80        90       100       110       120   

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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  (1, 1)

Asymmetric/Biological Unit

(-) CATH Domains  (1, 1)

Asymmetric/Biological Unit

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (5, 5)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (LALBA_CAVPO | P00713)
molecular function
    GO:0005509    calcium ion binding    Interacting selectively and non-covalently with calcium ions (Ca2+).
    GO:0004461    lactose synthase activity    Catalysis of the reaction: UDP-galactose + D-glucose = UDP + lactose.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
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: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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