6.2 Properties of alpha-Livetin (Chicken Serum Albumin)

6.2.1 Molecular Biological Properties
 
alpha-Livetin References
Allergen Nomenclature none  
Molecular Mass  70 kDa (1, 3), 66 kDa (2) (SDS-PAGE: 2, 3) (1) Williams et al. 1962 
(2) de Blay et al. 1994
(3) Szepfalusi et al. 1994
Isoelectric Point pI 4.3 - 5.7 (1: livetins), pI 4.6-4.8 (2: serum albumin)
(1) Ternes 1989 
(2) Miller & Gmeiner 1993
Amino Acid Sequence, mRNA, and cDNA 
Protein Serum albumin
SWISS-PROT:  P19121
GenBank: X60688, V00381
Amino Acids N-terminus: DAHK (1* ) 592 aa
mRNA precursor 1892 bp
cDNA precursor 571 bp (fragment, 2)
 *conflict to SWISS-PROT
(1) Sorkina et al. 1976 
(2) Hache et al. 1983
Posttranslational Modifications 
Disulfide bonds 
17 disulfide bonds  (1) 
(1) SWISS-PROT
Biological Function 
Serum albumin: binding of water and Ca-, Na-, and K- cations, fatty acids, hormones, bilirubin and drugs; regulation of the colloidal osmotic blood pressure (1) 
3 homologous domains: 
domain I: 8-183 
domain II: 202-375 
domain III: 394-573
(1) SWISS-PROT
 * alpha-livetin and chicken serum albumin are identical (Williams et al. 1962)

 6.2.2 Allergenic Properties
 
alpha-Livetin References
Frequency of Sensitization 
IgE-binding to alpha-livetin in 100% of patients  with bird feather and egg yolk allergy (1)
(1) see 6.1 Sensitization to Allergens of Bird's Egg Yolk and Feathers
 

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