The domain within your query sequence starts at position 24 and ends at position 51; the E-value for the Motilin_ghrelin domain shown below is 1.4e-15.

GSSFLSPEHQKAQQRKESKKPPAKLQPR

Motilin_ghrelin

Motilin_ghrelin
PFAM accession number:PF04644
Interpro abstract (IPR006738):

Motilin is a gastrointestinal regulatory polypeptide produced by motilin cells in the duodenal epithelium. It is released into the general circulation at about 100-min intervals during the inter-digestive state and is the most important factor in controlling the inter-digestive migrating contractions. Motilin also stimulates endogenous release of the endocrine pancreas [(PUBMED:9210180)].

This domain is also found in ghrelin, a growth hormone secretagogue synthesised by endocrine cells in the stomach. Ghrelin stimulates growth hormone secretagogue receptors in the pituitary. These receptors are distinct from the growth hormone-releasing hormone receptors, and thus provide a means of controlling pituitary growth hormone release by the gastrointestinal system [(PUBMED:11306336)].

GO component:extracellular region (GO:0005576)
GO function:hormone activity (GO:0005179)

This is a PFAM domain. For full annotation and more information, please see the PFAM entry Motilin_ghrelin