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(-) Description

Title :  STRUCTURAL AND FUNCTIONAL CONSEQUENCES OF POINT MUTATIONS OF VARIANTS A AND B OF BOVINE BETA-LACTOGLOBULIN
 
Authors :  B. Y. Qin, L. K. Creamer, M. C. Bewley, E. N. Baker, G. B. Jameson
Date :  29 Aug 98  (Deposition) - 02 Sep 98  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.22
Chains :  Asym./Biol. Unit :  A
Keywords :  Bovine Beta-Lactoglobulin, Crystal Structure, Genetic Variants, Point Mutation, Hydrophobic, Hormone/Growth Factor Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  B. Y. Qin, M. C. Bewley, L. K. Creamer, E. N. Baker, G. B. Jameson
Functional Implications Of Structural Differences Between Variants A And B Of Bovine Beta-Lactoglobulin.
Protein Sci. V. 8 75 1999
PubMed-ID: 10210185
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - PROTEIN (BETA-LACTOGLOBULIN)
    ChainsA
    MutationYES
    OrganBREAST
    Organism CommonCATTLE
    Organism ScientificBOS TAURUS
    Organism Taxid9913
    Other DetailsISOLATED FIRST FROM COW'S MILK IN 1934.
    SecretionBREAST
    TissueMAMMARY GLAND
    VariantVARIANT B

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 1BSQ)

(-) Sites  (0, 0)

(no "Site" information available for 1BSQ)

(-) SS Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1A:66 -A:160
2A:106 -A:119

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (5, 5)

Asymmetric/Biological Unit (5, 5)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_LACB_BOVIN_001 *E61QLACB_BOVIN  ---  ---AE45Q
2UniProtVAR_LACB_BOVIN_002 *I72LLACB_BOVIN  ---  ---AI56L
3UniProtVAR_LACB_BOVIN_003 *Q75HLACB_BOVIN  ---  ---AQ59H
4UniProtVAR_LACB_BOVIN_004 *G80DLACB_BOVIN  ---  ---AG64D
5UniProtVAR_LACB_BOVIN_005 *A134VLACB_BOVIN  ---  ---AA118V
   * ID not provided by source

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (1, 1)

Asymmetric/Biological Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1LIPOCALINPS00213 Lipocalin signature.LACB_BOVIN25-38  1A:9-22

(-) Exons   (0, 0)

(no "Exon" information available for 1BSQ)

(-) 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    
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SAPs(SNPs) PROSITE motifs Exons
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Chain A from PDB  Type:PROTEIN  Length:162
 aligned with LACB_BOVIN | P02754 from UniProtKB/Swiss-Prot  Length:178

    Alignment length:162
                                    26        36        46        56        66        76        86        96       106       116       126       136       146       156       166       176  
           LACB_BOVIN    17 LIVTQTMKGLDIQKVAGTWYSLAMAASDISLLDAQSAPLRVYVEELKPTPEGDLEILLQKWENGECAQKKIIAEKTKIPAVFKIDALNENKVLVLDTDYKKYLLFCMENSAEPEQSLACQCLVRTPEVDDEALEKFDKALKALPMHIRLSFNPTQLEEQCHI 178
               SCOP domains d1bsqa_ A: beta-Lactoglobulin                                                                                                                                      SCOP domains
               CATH domains 1bsqA00 A:1-162  [code=2.40.128.20, no name defined]                                                                                                               CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ...........hhhh....eeeeeee..hhhh.........eeeeeee.....eeeeeeee....eeeeeeee.......eee.......eeeeeee....eeeeeee.........eeeeee......hhhhhhhhhhh......eeee..hhhh...... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------Q----------L--H----D-----------------------------------------------------V-------------------------------------------- SAPs(SNPs)
                    PROSITE --------LIPOCALIN     -------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1bsq A   1 LIVTQTMKGLDIQKVAGTWYSLAMAASDISLLDAQSAPLRVYVEELKPTPEGDLEILLQKWENGECAQKKIIAEKTKIPAVFKIDALNENKVLVLDTDYKKYLLFCMENSAEPEQSLACQCLVRTPEVDDEALEKFDKALKALPMHIRLSFNPTQLEEQCHI 162
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160  

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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
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (4, 4)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (LACB_BOVIN | P02754)
molecular function
    GO:0019841    retinol binding    Interacting selectively and non-covalently with retinol, vitamin A1, 2,6,6-trimethyl-1-(9'-hydroxy-3',7'-dimethylnona-1',3',5',7'-tetraenyl)cyclohex-1-ene, one of the three components that makes up vitamin A. Retinol is an intermediate in the vision cycle and it also plays a role in growth and differentiation.
    GO:0036094    small molecule binding    Interacting selectively and non-covalently with a small molecule, any low molecular weight, monomeric, non-encoded molecule.
biological process
    GO:0006810    transport    The directed movement of substances (such as macromolecules, small molecules, ions) or cellular components (such as complexes and organelles) into, out of or within a cell, or between cells, or within a multicellular organism by means of some agent such as a transporter, pore or motor protein.
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
        LACB_BOVIN | P027541b0o 1b8e 1beb 1bso 1bsy 1cj5 1dv9 1gx8 1gx9 1gxa 1qg5 1uz2 1yup 2akq 2blg 2gj5 2q2m 2q2p 2q39 2r56 3blg 3kza 3npo 3nq3 3nq9 3ph5 3ph6 3ueu 3uev 3uew 3uex 4dq3 4dq4 4gny 4ib6 4ib7 4ib8 4ib9 4iba 4kii 4lzu 4lzv 4y0p 4y0q 4y0r 5eee 5htd 5hte 5io5 5io7 5k06 5lke 5lkf

(-) Related Entries Specified in the PDB File

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