Identification of pheromone-carrying protein in the preorbital gland post in the endangered Indian male Blackbuck Antelope cervicapra L.

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dc.contributor.authorRajagopal, T
dc.contributor.authorRajkumar, R
dc.contributor.authorPonmanickam, P
dc.contributor.authorAchiraman, S
dc.contributor.authorPadmanabhan, P
dc.contributor.authorArchunan, G
dc.date.accessioned2016-11-21T07:10:13Z
dc.date.available2016-11-21T07:10:13Z
dc.date.issued2015-12
dc.description.abstractIn mammals, a low molecular mass protein (17-20 KDa) reported from the pheromone sources such as urine, saliva, glandular secretion, etc., as ligand-carrier (pheromone carrier) has been associated with chemo-communication. Since the preorbital gland post is one of the major pheromone sources in Indian Blackbuck, an endangered species, we assumed thta it possibly contains low molecular mass protein for chemical communication. Hence, we investigated the preorbital gland post in territorial and non-territorial male blackbucks for such low molecular mass proteins adopting SDS-PAGE and LC-MS/MS analysis. The total content of protein was higher in the post of territorial males than non-territorial males of adult and sub-adult. In fact, the protein profiles such as 17, 21, 25, 42 and 61 kDa were noted in the gland secretion of territorial and non-territorial males. The intensity of the 17 kDa protein band was higher in territorial males than non-territorial males. In-gel trypsin digestion of the 17 kDa band was processed and subjected to LC-MS/MS and SEQUEST analyses. The results of LC-MS/MS and SEQUEST search showed the presence of α2u-globulin in the 17 kDa band. In addition, the identified α2u-globulin sequence possessed GDW residues, which are the characteristic signature for lipocalin family. Since the α2u-globulin has been reported from the pheromone-carrying proteins in some mammals, this protein may carry the volatiles (pheromone compounds) in male Blackbucks preorbital gland to evoke the scent marking for maintaining territoriality (home range) and attraction towards female, through the secretion of glandular protein.en_US
dc.identifier.citationRajagopal T, Rajkumar R, Ponmanickam P, Achiraman S, Padmanabhan P, Archunan G. Identification of pheromone-carrying protein in the preorbital gland post in the endangered Indian male Blackbuck Antelope cervicapra L. Indian Journal of Experimental Biology. 2015 Dec; 53(12): 771-778.en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/178621
dc.language.isoenen_US
dc.source.urihttps://nopr.niscair.res.in/handle/123456789/33457en_US
dc.subjectChemo-communicationen_US
dc.subjectEndangered speciesen_US
dc.subjectα2u-Globulinen_US
dc.subjectOlfactory communicationen_US
dc.subjectScent markingen_US
dc.subjectTerritorialityen_US
dc.titleIdentification of pheromone-carrying protein in the preorbital gland post in the endangered Indian male Blackbuck Antelope cervicapra L.en_US
dc.typeArticleen_US
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