The domain within your query sequence starts at position 8 and ends at position 55; the E-value for the Cytidylate_kin domain shown below is 3.5e-7.

AVILGPPGSGKGTVCERIAQNFGLQHLSSGHLLRENLKTGTEVGDVAK

Cytidylate_kin

Cytidylate_kin
PFAM accession number:PF02224
Interpro abstract (IPR011994):

Cytidylate kinase ( EC 2.7.4.14 ) catalyses the phosphorylation of cytidine 5'-monophosphate (dCMP) to cytidine 5'-diphosphate (dCDP) in the presence of ATP or GTP.

GO process:nucleobase-containing compound metabolic process (GO:0006139)
GO function:cytidylate kinase activity (GO:0004127), ATP binding (GO:0005524)

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