The domain within your query sequence starts at position 2 and ends at position 227; the E-value for the APH domain shown below is 2.2e-21.

RDCVLVRVYGERTELLVDRENEVRNFQLLRAHGCAPKLYCTFQNGLCYEYVQGVALGPEH
IREPQLFRLIALEMAKIHTIHANGSLPKPTLWHKMHRYFTLVKDEISPSLSADVPKVEVL
EQELAWLKEHLSQLDSPVVFCHNDLLCKNIIYDSDKGRVCFIDYEYAGYNYQAFDIGNHF
NEFAGVNVVDYSRYPARETQVQWLRYYLEAQKGTAASPREVERLYA

APH

APH
PFAM accession number:PF01636
Interpro abstract (IPR002575): This entry consists of bacterial antibiotic resistance proteins, which confer resistance to various aminoglycosides they include:- aminoglycoside 3'-phosphotransferase or kanamycin kinase / neomycin-kanamycin phosphotransferase and streptomycin 3''-kinase or streptomycin 3''-phosphotransferase. The aminoglycoside phosphotransferases inactivate aminoglycoside antibiotics via phosphorylation [(PUBMED:2167474)]. The proteins are found in a range of taxonomic groups.

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