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(-) Description

Title :  RECOMBINANT GOAT ALPHA-LACTALBUMIN
 
Authors :  K. Horii, M. Matsushima, K. Tsumoto, I. Kumagai
Date :  26 Nov 98  (Deposition) - 26 Nov 99  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.00
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (2x)
Keywords :  Lactose Synthase Component, Calcium Binding Metalloprotein, Glycoprotein, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  T. K. Chaudhuri, K. Horii, T. Yoda, M. Arai, S. Nagata, T. P. Terada, H. Uchiyama, T. Ikura, K. Tsumoto, H. Kataoka, M. Matsushima, K. Kuwajima, I. Kumagai
Effect Of The Extra N-Terminal Methionine Residue On The Stability And Folding Of Recombinant Alpha-Lactalbumin Expressed In Escherichia Coli.
J. Mol. Biol. V. 285 1179 1999
PubMed-ID: 9887272  |  Reference-DOI: 10.1006/JMBI.1998.2362
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - PROTEIN (ALPHA-LACTALBUMIN)
    Chains: A
    EC Number: 2.4.1.22
    Engineered: YES
    Expression System: ESCHERICHIA COLI BL21(DE3)
    Expression System Gene: A CLONED GENE OF GOAT CDNA
    Expression System Plasmid: PET-PUT7LA
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 469008
    Expression System Vector Type: PLASMID
    Gene: A CLONED GENE OF GOAT LACTA
    Mutation: YES
    Organism Common: GOAT
    Organism Scientific: CAPRA HIRCUS
    Organism Taxid: 9925

 Structural Features

(-) Chains, Units

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

Summary Information (see also Sequences/Alignments below)

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

Asymmetric Unit (1, 1)
No.NameCountTypeFull Name
1CA1Ligand/IonCALCIUM ION
Biological Unit 1 (0, 0)
No.NameCountTypeFull Name
1CA-1Ligand/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:157 , HOH A:167BINDING SITE FOR RESIDUE CA A 124

(-) SS Bonds  (4, 4)

Asymmetric 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 1HMK)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (2, 2)

Asymmetric Unit (2, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1LACTALBUMIN_LYSOZYME_2PS51348 Alpha-lactalbumin / lysozyme C family profile.LALBA_CAPHI20-142  1A:1-120
2LACTALBUMIN_LYSOZYME_1PS00128 Alpha-lactalbumin / lysozyme C signature.LALBA_CAPHI92-110  1A:73-91
Biological Unit 1 (2, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1LACTALBUMIN_LYSOZYME_2PS51348 Alpha-lactalbumin / lysozyme C family profile.LALBA_CAPHI20-142  2A:1-120
2LACTALBUMIN_LYSOZYME_1PS00128 Alpha-lactalbumin / lysozyme C signature.LALBA_CAPHI92-110  2A:73-91

(-) Exons   (0, 0)

(no "Exon" information available for 1HMK)

(-) 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:121
 aligned with LALBA_CAPHI | P00712 from UniProtKB/Swiss-Prot  Length:142

    Alignment length:121
                                    28        38        48        58        68        78        88        98       108       118       128       138 
          LALBA_CAPHI    19 AEQLTKCEVFQKLKDLKDYGGVSLPEWVCTAFHTSGYDTQAIVQNNDSTEYGLFQINNKIWCKDDQNPHSRNICNISCDKFLDDDLTDDIVCAKKILDKVGINYWLAHKALCSEKLDQWLC 139
               SCOP domains d1hmka_ A: alpha-Lactalbumin                                                                                              SCOP domains
               CATH domains 1hmkA00 A:0-120  [code=1.10.530.10, no name defined]                                                                      CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .....hhhhhhh.hhh..hhh..hhhhhhhhhhhh......eee....eee..........................hhhh.....hhhhhhhhhhhhhh.hhh....hhhh...hhhh.. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) -LACTALBUMIN_LYSOZYME_2  PDB: A:1-120 UniProt: 20-142                                                                     PROSITE (1)
                PROSITE (2) -------------------------------------------------------------------------LACTALBUMIN_LYSOZYM----------------------------- PROSITE (2)
                 Transcript ------------------------------------------------------------------------------------------------------------------------- Transcript
                 1hmk A   0 MEQLTKCEVFQKLKDLKDYGGVSLPEWVCTAFHTSGYDTQAIVQNNDSTEYGLFQINNKIWCKDDQNPHSRNICNISCDKFLDDDLTDDIVCAKKILDKVGINYWLAHKALCSEKLDQWLC 120
                                     9        19        29        39        49        59        69        79        89        99       109       119
   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
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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 Unit
(-)
Class: Alpha and beta proteins (a+b) (23004)

(-) CATH Domains  (1, 1)

Asymmetric Unit
(-)
Class: Mainly Alpha (13335)

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (5, 5)

Asymmetric Unit(hide GO term definitions)
Chain A   (LALBA_CAPHI | P00712)
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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 Related Entries

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

UniProtKB/Swiss-Prot
        LALBA_CAPHI | P00712: 1fkq 1fkv 1hfy 3b0k

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