The domain within your query sequence starts at position 43 and ends at position 307; the E-value for the APH domain shown below is 3.5e-45.

TVTQYRSGQSNPTFFLQKGSQAYVLRKKPPGSLLPKAHKIDREFKIQKALFSIGFPVAKP
LLYCRDASVIGTEFYVMEHVQGRIFRDFSIPGVSSAERAAIYVSVAETLAWLHSLDIRSL
KLDKYGTGVGYCKRQVSTWTKQYQASAHQSIPAMDQLSTWLMKNLPDSDSEECLVHGDFK
LDNIVFHPKECRVIAVLDWELSTFGHPLTDLAHLSLFYYWPRTLPMINRGSHIPENTGIP
LMEELISIYCHRRGIDPNLPNWNFF

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