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LACB_BOVIN
ID   LACB_BOVIN              Reviewed;         178 AA.
AC   P02754; Q32P89;
DT   21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT   01-AUG-1991, sequence version 3.
DT   03-AUG-2022, entry version 183.
DE   RecName: Full=Beta-lactoglobulin;
DE            Short=Beta-LG;
DE   AltName: Allergen=Bos d 5;
DE   Flags: Precursor;
GN   Name=LGB;
OS   Bos taurus (Bovine).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Eutheria; Laurasiatheria; Artiodactyla; Ruminantia; Pecora; Bovidae;
OC   Bovinae; Bos.
OX   NCBI_TaxID=9913;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA], AND VARIANTS ASP-80 AND VAL-134.
RC   TISSUE=Mammary gland;
RX   PubMed=2701948; DOI=10.1093/nar/17.16.6739;
RA   Alexander L.J., Hayes G., Pearse M.J., Beattie C.W., Stewart A.F.,
RA   Willis I.M., McKinlay A.G.;
RT   "Complete sequence of the bovine beta-lactoglobulin cDNA.";
RL   Nucleic Acids Res. 17:6739-6739(1989).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   TISSUE=Sperm;
RA   Hyttinen J.M., Korhonen V.P., Myohanen S., Janne J.;
RT   "Bovine beta-lactoglobulin: cloning and expression in transgenic mice.";
RL   Submitted (FEB-1995) to the EMBL/GenBank/DDBJ databases.
RN   [3]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Braunschweig M.H.;
RT   "Aberrant low expression level of bovine beta-lactoglobulin B.";
RL   Submitted (APR-2006) to the EMBL/GenBank/DDBJ databases.
RN   [4]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC   STRAIN=Crossbred X Angus; TISSUE=Liver;
RG   NIH - Mammalian Gene Collection (MGC) project;
RL   Submitted (OCT-2005) to the EMBL/GenBank/DDBJ databases.
RN   [5]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 1-20.
RC   TISSUE=Pituitary;
RX   PubMed=2349102; DOI=10.1093/nar/18.10.3051;
RA   Silva M.C., Wong D.W.S., Batt C.A.;
RT   "Cloning and partial nucleotide sequence of the genomic bovine beta-
RT   lactoglobulin gene.";
RL   Nucleic Acids Res. 18:3051-3051(1990).
RN   [6]
RP   PROTEIN SEQUENCE OF 17-178, AND VARIANTS ASP-80 AND VAL-134.
RX   PubMed=4611888;
RA   Braunitzer G., Chen R., Schrank B., Stangl A.;
RT   "The sequence of beta-lactoglobulin.";
RL   Hoppe-Seyler's Z. Physiol. Chem. 354:867-878(1973).
RN   [7]
RP   SEQUENCE REVISION TO 100; 103; 171 AND 172.
RX   PubMed=511095; DOI=10.1515/bchm2.1979.360.2.1595;
RA   Preaux G., Braunitzer G., Schrank B., Stangl A.;
RT   "The amino acid sequence of goat beta-lactoglobulin.";
RL   Hoppe-Seyler's Z. Physiol. Chem. 360:1595-1604(1979).
RN   [8]
RP   PROTEIN SEQUENCE OF 17-178, AND VARIANT LEU-72.
RC   STRAIN=Murnau-Werdenfelser;
RX   PubMed=2340107;
RA   Godovac-Zimmermann J., Krause I., Buchberger J., Weiss G., Klostermeyer H.;
RT   "Genetic variants of bovine beta-lactoglobulin. A novel wild-type beta-
RT   lactoglobulin W and its primary sequence.";
RL   Biol. Chem. Hoppe-Seyler 371:255-260(1990).
RN   [9]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 28-178, AND VARIANTS ASP-80 AND
RP   VAL-134.
RX   PubMed=3443305; DOI=10.1016/0378-1119(87)90367-2;
RA   Jamieson A.C., Vandeyar M.A., Kang Y.C., Kinsella J.E., Batt C.A.;
RT   "Cloning and nucleotide sequence of the bovine beta-lactoglobulin gene.";
RL   Gene 61:85-90(1987).
RN   [10]
RP   PROTEIN SEQUENCE OF 59-73, AND VARIANT GLN-61.
RX   PubMed=4737332; DOI=10.1016/0014-5793(73)80162-0;
RA   Brignon G., Ribadeau-Dumas B.;
RT   "Localization of the Glu-Gln substitution differentiating B and D genetic
RT   variants in the peptide chain of bovine beta lactoglobulin.";
RL   FEBS Lett. 33:73-76(1973).
RN   [11]
RP   NUCLEOTIDE SEQUENCE [MRNA] OF 122-178.
RX   PubMed=3202951; DOI=10.1515/bchm3.1988.369.1.425;
RA   Ivanov V.N., Judinkova E.S., Gorodetsky S.I.;
RT   "Molecular cloning of bovine beta-lactoglobulin cDNA.";
RL   Biol. Chem. Hoppe-Seyler 369:425-429(1988).
RN   [12]
RP   NUCLEOTIDE SEQUENCE [MRNA] OF 125-138, AND VARIANT VAL-134.
RX   PubMed=6897774; DOI=10.1089/dna.1982.1.375;
RA   Willis I.M., Stewart A.F., Caputo A., Thompson A.R., McKinlay A.G.;
RT   "Construction and identification by partial nucleotide sequence analysis of
RT   bovine casein and beta-lactoglobulin cDNA clones.";
RL   DNA 1:375-386(1982).
RN   [13]
RP   DISULFIDE BONDS.
RX   PubMed=4569282; DOI=10.1021/bi00774a017;
RA   McKenzie H.A., Ralston G.B., Shaw D.C.;
RT   "Location of sulfhydryl and disulfide groups in bovine beta-lactoglobulins
RT   and effects of urea.";
RL   Biochemistry 11:4539-4547(1972).
RN   [14]
RP   INTERACTION WITH LGB.
RX   PubMed=17991420; DOI=10.1016/j.bbamem.2007.10.010;
RA   Fluckinger M., Merschak P., Hermann M., Haertle T., Redl B.;
RT   "Lipocalin-interacting-membrane-receptor (LIMR) mediates cellular
RT   internalization of beta-lactoglobulin.";
RL   Biochim. Biophys. Acta 1778:342-347(2008).
RN   [15]
RP   ABSENCE OF INTERACTION WITH LMBR1L.
RX   PubMed=23964685; DOI=10.3109/09687688.2013.823018;
RA   Hesselink R.W., Findlay J.B.;
RT   "Expression, characterization and ligand specificity of lipocalin-1
RT   interacting membrane receptor (LIMR).";
RL   Mol. Membr. Biol. 30:327-337(2013).
RN   [16]
RP   VARIANT HIS-75.
RA   Shaw D.C.;
RL   Submitted (JAN-1973) to the PIR data bank.
RN   [17]
RP   COMPARISON OF X-RAY STRUCTURES.
RX   PubMed=1623143; DOI=10.1002/bip.360320425;
RA   Monaco H.L., Zanotti G.;
RT   "Three-dimensional structure and active site of three hydrophobic molecule-
RT   binding proteins with significant amino acid sequence similarity.";
RL   Biopolymers 32:457-465(1992).
RN   [18]
RP   X-RAY CRYSTALLOGRAPHY (1.8 ANGSTROMS), AND SUBUNIT.
RX   PubMed=9115437; DOI=10.1016/s0969-2126(97)00205-0;
RA   Brownlow S., Morais-Cabral J.H., Cooper R., Flower D.R., Yewdall S.J.,
RA   Polikarpov I., North A.C.T., Sawyer L.;
RT   "Bovine beta-lactoglobulin at 1.8-A resolution -- still an enigmatic
RT   lipocalin.";
RL   Structure 5:481-495(1997).
RN   [19]
RP   X-RAY CRYSTALLOGRAPHY (2.22 ANGSTROMS), AND SUBUNIT.
RX   PubMed=9760236; DOI=10.1021/bi981016t;
RA   Qin B.Y., Bewley M.C., Creamer L.K., Baker H.M., Baker E.N., Jameson G.B.;
RT   "Structural basis of the tanford transition of bovine beta-lactoglobulin.";
RL   Biochemistry 37:14014-14023(1998).
RN   [20]
RP   STRUCTURE BY NMR, AND SUBUNIT.
RX   PubMed=8601463; DOI=10.1016/0014-5793(96)00100-7;
RA   Molinari H., Ragona L., Varani L., Musco G., Consonni R., Zetta L.,
RA   Monaco H.L.;
RT   "Partially folded structure of monomeric bovine beta-lactoglobulin.";
RL   FEBS Lett. 381:237-243(1996).
RN   [21]
RP   STRUCTURE BY NMR OF VARIANT A, AND SUBUNIT.
RX   PubMed=10595563; DOI=10.1110/ps.8.11.2541;
RA   Kuwata K., Hoshino M., Forge V., Era S., Batt C.A., Goto Y.;
RT   "Solution structure and dynamics of bovine beta-lactoglobulin A.";
RL   Protein Sci. 8:2541-2545(1999).
CC   -!- FUNCTION: Primary component of whey, it binds retinol and is probably
CC       involved in the transport of that molecule.
CC   -!- SUBUNIT: Under physiological conditions beta-lactoglobulin exists as an
CC       equilibrium mixture of monomeric and dimeric forms (PubMed:9115437,
CC       PubMed:9760236, PubMed:8601463, PubMed:10595563). Interaction with
CC       LMBR1L which mediates the endocytosis of LGB has been observed in
CC       PubMed:17991420, but not in PubMed:23964685 (PubMed:17991420,
CC       PubMed:23964685). {ECO:0000269|PubMed:10595563,
CC       ECO:0000269|PubMed:17991420, ECO:0000269|PubMed:23964685,
CC       ECO:0000269|PubMed:8601463, ECO:0000269|PubMed:9115437,
CC       ECO:0000269|PubMed:9760236}.
CC   -!- INTERACTION:
CC       P02754; P02754: LGB; NbExp=2; IntAct=EBI-9697387, EBI-9697387;
CC   -!- SUBCELLULAR LOCATION: Secreted.
CC   -!- TISSUE SPECIFICITY: Synthesized in mammary gland and secreted in milk.
CC   -!- PTM: Alternate disulfide bonds occur in equal amounts in all variants
CC       examined.
CC   -!- ALLERGEN: Causes an allergic reaction in human. Is one of the causes of
CC       cow's milk allergy.
CC   -!- MISCELLANEOUS: The B variant sequence is shown.
CC   -!- SIMILARITY: Belongs to the calycin superfamily. Lipocalin family.
CC       {ECO:0000305}.
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DR   EMBL; X14712; CAA32835.1; -; mRNA.
DR   EMBL; Z48305; CAA88303.1; -; Genomic_DNA.
DR   EMBL; DQ489319; ABF48380.1; -; Genomic_DNA.
DR   EMBL; BC108213; AAI08214.1; -; mRNA.
DR   EMBL; X52581; CAA36812.1; -; Genomic_DNA.
DR   EMBL; M19088; AAA30411.1; -; Genomic_DNA.
DR   EMBL; M27732; AAA30412.1; -; mRNA.
DR   EMBL; K01086; AAA30413.1; -; mRNA.
DR   PIR; S10179; LGBO.
DR   RefSeq; NP_776354.2; NM_173929.3.
DR   RefSeq; XP_015329083.1; XM_015473597.1.
DR   PDB; 1B0O; X-ray; 2.50 A; A=17-178.
DR   PDB; 1B8E; X-ray; 1.95 A; A=17-178.
DR   PDB; 1BEB; X-ray; 1.80 A; A/B=17-178.
DR   PDB; 1BSO; X-ray; 2.23 A; A=17-178.
DR   PDB; 1BSQ; X-ray; 2.22 A; A=17-178.
DR   PDB; 1BSY; X-ray; 2.24 A; A=17-178.
DR   PDB; 1CJ5; NMR; -; A=19-178.
DR   PDB; 1DV9; NMR; -; A=17-178.
DR   PDB; 1GX8; X-ray; 2.40 A; A=17-178.
DR   PDB; 1GX9; X-ray; 2.34 A; A=17-178.
DR   PDB; 1GXA; X-ray; 2.35 A; A=17-178.
DR   PDB; 1QG5; X-ray; 2.00 A; A=17-178.
DR   PDB; 1UZ2; X-ray; 1.95 A; X=17-178.
DR   PDB; 1YUP; X-ray; 2.10 A; D=18-176.
DR   PDB; 2AKQ; X-ray; 3.00 A; A/B/C/D=17-178.
DR   PDB; 2BLG; X-ray; 2.46 A; A=17-178.
DR   PDB; 2GJ5; X-ray; 2.40 A; A=17-178.
DR   PDB; 2Q2M; X-ray; 2.10 A; A=17-178.
DR   PDB; 2Q2P; X-ray; 2.96 A; A=17-178.
DR   PDB; 2Q39; X-ray; 2.50 A; A/B=17-178.
DR   PDB; 2R56; X-ray; 2.80 A; A/B=17-178.
DR   PDB; 3BLG; X-ray; 2.56 A; A=17-178.
DR   PDB; 3KZA; X-ray; 2.00 A; A/B=33-169.
DR   PDB; 3NPO; X-ray; 2.20 A; A=17-178.
DR   PDB; 3NQ3; X-ray; 1.90 A; A=17-178.
DR   PDB; 3NQ9; X-ray; 1.90 A; A=17-178.
DR   PDB; 3PH5; X-ray; 2.40 A; A/B=18-178.
DR   PDB; 3PH6; X-ray; 2.53 A; A/B=18-178.
DR   PDB; 3UEU; X-ray; 2.10 A; A=17-178.
DR   PDB; 3UEV; X-ray; 1.90 A; A=17-178.
DR   PDB; 3UEW; X-ray; 2.00 A; A=17-178.
DR   PDB; 3UEX; X-ray; 2.10 A; A=17-178.
DR   PDB; 4DQ3; X-ray; 1.95 A; A=17-178.
DR   PDB; 4DQ4; X-ray; 1.90 A; A=17-178.
DR   PDB; 4GNY; X-ray; 1.64 A; A=17-178.
DR   PDB; 4IB6; X-ray; 2.20 A; A=17-178.
DR   PDB; 4IB7; X-ray; 2.20 A; A=17-178.
DR   PDB; 4IB8; X-ray; 2.30 A; A=17-178.
DR   PDB; 4IB9; X-ray; 2.20 A; A=17-178.
DR   PDB; 4IBA; X-ray; 2.30 A; A=17-178.
DR   PDB; 4KII; X-ray; 1.85 A; A=17-178.
DR   PDB; 4LZU; X-ray; 2.40 A; A=17-178.
DR   PDB; 4LZV; X-ray; 2.44 A; A=17-178.
DR   PDB; 4Y0P; X-ray; 2.20 A; A=17-178.
DR   PDB; 4Y0Q; X-ray; 2.00 A; A=17-178.
DR   PDB; 4Y0R; X-ray; 2.30 A; A=17-178.
DR   PDB; 5HTD; X-ray; 2.50 A; A=17-178.
DR   PDB; 5HTE; X-ray; 2.40 A; A=17-178.
DR   PDB; 5IO5; X-ray; 2.85 A; A=17-178.
DR   PDB; 5IO7; X-ray; 2.85 A; A=17-178.
DR   PDB; 5K06; X-ray; 2.50 A; A=17-178.
DR   PDB; 5LKE; X-ray; 2.80 A; A=17-178.
DR   PDB; 5LKF; X-ray; 2.50 A; A=17-178.
DR   PDB; 5NUJ; X-ray; 2.60 A; A=17-178.
DR   PDB; 5NUK; X-ray; 1.70 A; A=17-178.
DR   PDB; 5NUM; X-ray; 2.30 A; A=17-178.
DR   PDB; 5NUN; X-ray; 1.95 A; A=17-178.
DR   PDB; 5Y5C; X-ray; 2.61 A; A/B=17-178.
DR   PDB; 6FXB; X-ray; 2.00 A; A/B/C/D=17-178.
DR   PDB; 6GE7; X-ray; 2.30 A; A=17-178.
DR   PDB; 6GF9; X-ray; 2.10 A; A=17-178.
DR   PDB; 6GFS; X-ray; 2.00 A; A=17-178.
DR   PDB; 6GHH; X-ray; 1.90 A; A=17-178.
DR   PDB; 6NKQ; X-ray; 2.30 A; A/B/C/D/E/F=1-178.
DR   PDB; 6QI6; X-ray; 2.00 A; A=17-178.
DR   PDB; 6QI7; X-ray; 2.50 A; A=17-178.
DR   PDB; 6QPD; X-ray; 2.00 A; A=17-178.
DR   PDB; 6QPE; X-ray; 2.20 A; A=17-178.
DR   PDB; 6RWP; X-ray; 2.10 A; A=17-178.
DR   PDB; 6RWQ; X-ray; 2.05 A; A=17-178.
DR   PDB; 6RWR; X-ray; 2.10 A; A=17-178.
DR   PDB; 6RYT; X-ray; 2.10 A; A/B=17-178.
DR   PDB; 6T42; X-ray; 1.95 A; AAA=17-178.
DR   PDB; 6XVE; X-ray; 2.15 A; A=17-178.
DR   PDB; 6ZSQ; X-ray; 2.00 A; AAA/BBB=17-178.
DR   PDB; 6ZSR; X-ray; 2.00 A; AAA/BBB=17-178.
DR   PDB; 7BF7; X-ray; 2.10 A; AAA=17-178.
DR   PDB; 7BF8; X-ray; 1.80 A; AAA/BBB=17-178.
DR   PDB; 7BF9; X-ray; 1.80 A; AAA=17-178.
DR   PDB; 7BGA; X-ray; 1.90 A; AAA=17-178.
DR   PDB; 7BGX; X-ray; 2.00 A; AAA=17-178.
DR   PDB; 7BGZ; X-ray; 2.40 A; AAA=17-178.
DR   PDB; 7BH0; X-ray; 2.10 A; AAA=17-178.
DR   PDB; 7KOT; X-ray; 1.74 A; A=17-178.
DR   PDB; 7KP5; X-ray; 2.40 A; AA1/BA1=17-178.
DR   PDB; 7NQB; X-ray; 2.01 A; AAA/BBB=17-178.
DR   PDBsum; 1B0O; -.
DR   PDBsum; 1B8E; -.
DR   PDBsum; 1BEB; -.
DR   PDBsum; 1BSO; -.
DR   PDBsum; 1BSQ; -.
DR   PDBsum; 1BSY; -.
DR   PDBsum; 1CJ5; -.
DR   PDBsum; 1DV9; -.
DR   PDBsum; 1GX8; -.
DR   PDBsum; 1GX9; -.
DR   PDBsum; 1GXA; -.
DR   PDBsum; 1QG5; -.
DR   PDBsum; 1UZ2; -.
DR   PDBsum; 1YUP; -.
DR   PDBsum; 2AKQ; -.
DR   PDBsum; 2BLG; -.
DR   PDBsum; 2GJ5; -.
DR   PDBsum; 2Q2M; -.
DR   PDBsum; 2Q2P; -.
DR   PDBsum; 2Q39; -.
DR   PDBsum; 2R56; -.
DR   PDBsum; 3BLG; -.
DR   PDBsum; 3KZA; -.
DR   PDBsum; 3NPO; -.
DR   PDBsum; 3NQ3; -.
DR   PDBsum; 3NQ9; -.
DR   PDBsum; 3PH5; -.
DR   PDBsum; 3PH6; -.
DR   PDBsum; 3UEU; -.
DR   PDBsum; 3UEV; -.
DR   PDBsum; 3UEW; -.
DR   PDBsum; 3UEX; -.
DR   PDBsum; 4DQ3; -.
DR   PDBsum; 4DQ4; -.
DR   PDBsum; 4GNY; -.
DR   PDBsum; 4IB6; -.
DR   PDBsum; 4IB7; -.
DR   PDBsum; 4IB8; -.
DR   PDBsum; 4IB9; -.
DR   PDBsum; 4IBA; -.
DR   PDBsum; 4KII; -.
DR   PDBsum; 4LZU; -.
DR   PDBsum; 4LZV; -.
DR   PDBsum; 4Y0P; -.
DR   PDBsum; 4Y0Q; -.
DR   PDBsum; 4Y0R; -.
DR   PDBsum; 5HTD; -.
DR   PDBsum; 5HTE; -.
DR   PDBsum; 5IO5; -.
DR   PDBsum; 5IO7; -.
DR   PDBsum; 5K06; -.
DR   PDBsum; 5LKE; -.
DR   PDBsum; 5LKF; -.
DR   PDBsum; 5NUJ; -.
DR   PDBsum; 5NUK; -.
DR   PDBsum; 5NUM; -.
DR   PDBsum; 5NUN; -.
DR   PDBsum; 5Y5C; -.
DR   PDBsum; 6FXB; -.
DR   PDBsum; 6GE7; -.
DR   PDBsum; 6GF9; -.
DR   PDBsum; 6GFS; -.
DR   PDBsum; 6GHH; -.
DR   PDBsum; 6NKQ; -.
DR   PDBsum; 6QI6; -.
DR   PDBsum; 6QI7; -.
DR   PDBsum; 6QPD; -.
DR   PDBsum; 6QPE; -.
DR   PDBsum; 6RWP; -.
DR   PDBsum; 6RWQ; -.
DR   PDBsum; 6RWR; -.
DR   PDBsum; 6RYT; -.
DR   PDBsum; 6T42; -.
DR   PDBsum; 6XVE; -.
DR   PDBsum; 6ZSQ; -.
DR   PDBsum; 6ZSR; -.
DR   PDBsum; 7BF7; -.
DR   PDBsum; 7BF8; -.
DR   PDBsum; 7BF9; -.
DR   PDBsum; 7BGA; -.
DR   PDBsum; 7BGX; -.
DR   PDBsum; 7BGZ; -.
DR   PDBsum; 7BH0; -.
DR   PDBsum; 7KOT; -.
DR   PDBsum; 7KP5; -.
DR   PDBsum; 7NQB; -.
DR   AlphaFoldDB; P02754; -.
DR   BMRB; P02754; -.
DR   PCDDB; P02754; -.
DR   SMR; P02754; -.
DR   DIP; DIP-29525N; -.
DR   MINT; P02754; -.
DR   STRING; 9913.ENSBTAP00000019538; -.
DR   BindingDB; P02754; -.
DR   ChEMBL; CHEMBL1075053; -.
DR   DrugCentral; P02754; -.
DR   Allergome; 164; Bos d 5.
DR   Allergome; 2739; Bos d 5.0101.
DR   CarbonylDB; P02754; -.
DR   GlyConnect; 70; 6 N-Linked glycans.
DR   PaxDb; P02754; -.
DR   PeptideAtlas; P02754; -.
DR   PRIDE; P02754; -.
DR   ABCD; P02754; 1 sequenced antibody.
DR   Ensembl; ENSBTAT00000019538; ENSBTAP00000019538; ENSBTAG00000014678.
DR   GeneID; 280838; -.
DR   KEGG; bta:280838; -.
DR   CTD; 5047; -.
DR   VEuPathDB; HostDB:ENSBTAG00000014678; -.
DR   eggNOG; ENOG502T0EI; Eukaryota.
DR   GeneTree; ENSGT01050000244868; -.
DR   InParanoid; P02754; -.
DR   OrthoDB; 1551422at2759; -.
DR   EvolutionaryTrace; P02754; -.
DR   PRO; PR:P02754; -.
DR   Proteomes; UP000009136; Chromosome 11.
DR   Bgee; ENSBTAG00000014678; Expressed in milk and 28 other tissues.
DR   GO; GO:0005615; C:extracellular space; IBA:GO_Central.
DR   GO; GO:0042802; F:identical protein binding; IPI:IntAct.
DR   GO; GO:0036041; F:long-chain fatty acid binding; IDA:CAFA.
DR   GO; GO:0019841; F:retinol binding; IEA:UniProtKB-KW.
DR   DisProt; DP00193; -.
DR   Gene3D; 2.40.128.20; -; 1.
DR   InterPro; IPR002447; Blactoglobulin.
DR   InterPro; IPR012674; Calycin.
DR   InterPro; IPR002345; Lipocalin.
DR   InterPro; IPR022272; Lipocalin_CS.
DR   InterPro; IPR000566; Lipocln_cytosolic_FA-bd_dom.
DR   PANTHER; PTHR11430; PTHR11430; 1.
DR   Pfam; PF00061; Lipocalin; 1.
DR   PRINTS; PR01172; BLCTOGLOBULN.
DR   SUPFAM; SSF50814; SSF50814; 1.
DR   PROSITE; PS00213; LIPOCALIN; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Allergen; Direct protein sequencing; Disulfide bond;
KW   Milk protein; Reference proteome; Retinol-binding; Secreted; Signal;
KW   Transport.
FT   SIGNAL          1..16
FT                   /evidence="ECO:0000269|PubMed:2340107,
FT                   ECO:0000269|PubMed:4611888"
FT   CHAIN           17..178
FT                   /note="Beta-lactoglobulin"
FT                   /id="PRO_0000017903"
FT   DISULFID        82..176
FT                   /evidence="ECO:0000269|PubMed:10595563,
FT                   ECO:0000269|PubMed:4569282"
FT   DISULFID        122..137
FT                   /note="Alternate"
FT                   /evidence="ECO:0000269|PubMed:4569282"
FT   DISULFID        122..135
FT                   /evidence="ECO:0000269|PubMed:10595563,
FT                   ECO:0000269|PubMed:4569282"
FT   VARIANT         61
FT                   /note="E -> Q (in variant D)"
FT                   /evidence="ECO:0000269|PubMed:4737332"
FT   VARIANT         72
FT                   /note="I -> L (in variant W)"
FT                   /evidence="ECO:0000269|PubMed:2340107"
FT   VARIANT         75
FT                   /note="Q -> H (in variant C; found only in the Jersey
FT                   breed)"
FT                   /evidence="ECO:0000269|Ref.16"
FT   VARIANT         80
FT                   /note="G -> D (in variant A)"
FT                   /evidence="ECO:0000269|PubMed:2701948,
FT                   ECO:0000269|PubMed:3443305, ECO:0000269|PubMed:4611888"
FT   VARIANT         134
FT                   /note="A -> V (in variant A)"
FT                   /evidence="ECO:0000269|PubMed:2701948,
FT                   ECO:0000269|PubMed:3443305, ECO:0000269|PubMed:4611888,
FT                   ECO:0000269|PubMed:6897774"
FT   CONFLICT        121
FT                   /note="F -> V (in Ref. 1; CAA32835)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        136
FT                   /note="Q -> E (in Ref. 12)"
FT                   /evidence="ECO:0000305"
FT   HELIX           19..21
FT                   /evidence="ECO:0007829|PDB:1B8E"
FT   HELIX           28..31
FT                   /evidence="ECO:0007829|PDB:4GNY"
FT   STRAND          36..44
FT                   /evidence="ECO:0007829|PDB:4GNY"
FT   HELIX           45..47
FT                   /evidence="ECO:0007829|PDB:4GNY"
FT   STRAND          48..50
FT                   /evidence="ECO:0007829|PDB:1UZ2"
FT   STRAND          57..64
FT                   /evidence="ECO:0007829|PDB:4GNY"
FT   STRAND          66..68
FT                   /evidence="ECO:0007829|PDB:5LKF"
FT   STRAND          70..78
FT                   /evidence="ECO:0007829|PDB:4GNY"
FT   STRAND          81..91
FT                   /evidence="ECO:0007829|PDB:4GNY"
FT   STRAND          97..100
FT                   /evidence="ECO:0007829|PDB:4GNY"
FT   STRAND          102..104
FT                   /evidence="ECO:0007829|PDB:5NUK"
FT   STRAND          107..113
FT                   /evidence="ECO:0007829|PDB:4GNY"
FT   STRAND          115..124
FT                   /evidence="ECO:0007829|PDB:4GNY"
FT   STRAND          126..128
FT                   /evidence="ECO:0007829|PDB:6NKQ"
FT   HELIX           129..131
FT                   /evidence="ECO:0007829|PDB:1BEB"
FT   STRAND          133..143
FT                   /evidence="ECO:0007829|PDB:4GNY"
FT   HELIX           146..156
FT                   /evidence="ECO:0007829|PDB:4GNY"
FT   STRAND          157..159
FT                   /evidence="ECO:0007829|PDB:6GHH"
FT   STRAND          163..166
FT                   /evidence="ECO:0007829|PDB:4GNY"
FT   HELIX           169..172
FT                   /evidence="ECO:0007829|PDB:4GNY"
FT   HELIX           175..177
FT                   /evidence="ECO:0007829|PDB:4GNY"
SQ   SEQUENCE   178 AA;  19883 MW;  225F10A78C63A6B2 CRC64;
     MKCLLLALAL TCGAQALIVT QTMKGLDIQK VAGTWYSLAM AASDISLLDA QSAPLRVYVE
     ELKPTPEGDL EILLQKWENG ECAQKKIIAE KTKIPAVFKI DALNENKVLV LDTDYKKYLL
     FCMENSAEPE QSLACQCLVR TPEVDDEALE KFDKALKALP MHIRLSFNPT QLEEQCHI
 
 
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