The domain within your query sequence starts at position 284 and ends at position 503; the E-value for the Methyltransf_8 domain shown below is 7.5e-107.

ALRARMTQRLDGARFRYLNEQLYSGPSSAARRLFQEDPEAFLLYHRGFQRQVKKWPLHPV
DRIAKDLRQKPASLVVADFGCGDCRLASSVRNPVHCFDLASLDPRVTVCDMAQVPLEDES
VDVAVFCLSLMGTNIRDFLEEANRVLKTGGLLKVAEVSSRFEDIRTFLGAVTKLGFKIIY
KDLTNSHFFLFDFEKTGPPRVGPKAQLSGLKLQPCLYKRR

Methyltransf_8

Methyltransf_8
PFAM accession number:PF05148
Interpro abstract (IPR007823): Ribosomal RNA processing protein 8 (Rrp8) is a nucleolar Rossman-fold like methyltransferase. In yeast, it is involved in pre-rRNA cleavage at site A2 [(PUBMED:10864042)] and is responsible for a base methylation of the 25S rRNA [(PUBMED:23180764)]. In humans it is also known as nucleomethylin (NML), and it is important for mediating the assembly of the energy-dependent nucleolar silencing complex (eNoSC), which regulates rRNA transcription in response to glucose deprivation [(PUBMED:23897426)]. NML represses rDNA transcription by promoting H3K9 methylation and establishing heterochromatin across the rDNA [(PUBMED:18485871)].
GO component:nucleolus (GO:0005730)
GO function:methyltransferase activity (GO:0008168)

This is a PFAM domain. For full annotation and more information, please see the PFAM entry Methyltransf_8