The domain within your query sequence starts at position 454 and ends at position 610; the E-value for the 3a1b domain shown below is 2e-99.
RKSTTEKPKVKEIIDERTRERLVYEVRQKCRNIEDICISCGSLNVTLEHPLFIGGMCQNC KNCFLECAYQYDDDGYQSYCTICCGGREVLMCGNNNCCRCFCVECVDLLVGPGAAQAAIK EDPWNCYMCGHKGTYGLLRRREDWPSRLQMFFANNHD