Article

Identification of alpha-2u globulin in the rat preputial gland by MALDI-TOF analysis.

Department of Animal Science, Bharathidasan University Tiruchirappalli 620 024, TN, India.
Indian journal of biochemistry & biophysics (impact factor: 1.14). 11/2006; 43(5):319-22. pp.319-22
Source: PubMed

ABSTRACT The low molecular mass proteins found in the pheromonal sources such as urine, saliva, glandular secretion etc have been reported as ligand carriers for the processes of chemocommunication in mammals. The preputial gland plays an important role in the production of olfactory signals for pheromonal communication. Thus, in the present study, alpha-2u globulin having molecular mass of 18 kDa has been identified in the preputial gland of Norway rat (Rattus norvegicus) by in-gel trypsin digestion and analyzing the resulting peptides by MALDI-TOF. Since preputial gland is one of the major pheromonal sources in rat, the results suggest that alpha-2u globulin might act as a carrier for hydrophobic odorants of preputial gland.

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Keywords

alpha-2u globulin
 
glandular secretion
 
hydrophobic odorants
 
in-gel trypsin digestion
 
ligand carriers
 
low molecular mass proteins
 
major pheromonal sources
 
molecular mass
 
Norway rat
 
olfactory signals
 
preputial gland
 
processes
 
Rattus norvegicus
 
saliva