The domain within your query sequence starts at position 1 and ends at position 1172; the E-value for the GREB1 domain shown below is < 1e-12.

MGNSYAGQLKSARFEEALHNSIEASLRCSTAVPRPIFSQLYLDPDQHPFSTADVKPKVED
LDKDLVHPYTQNGSVDFSHNVAMNEMEDDEDEEEMSDSNSPPIPYSQKPAPEGSCTTDGF
CQAGKDLRLVSLCMEQIDIPAGFLLVGAKSPNLPEHILVCAVDKRFLPDDHGKNALLGFS
GNCIGCGERGFRYFTEFSNHINLKLTTQPKKQKHLKYYLVRTSQGVLSKGPLICWKECRS
RQSSALCHSTKPISSVSSAVAPENGTANGYKAGFTVTEAANGTSGHGGKSSSCSSTPSRP
GNYSLSPRPTFTSVDQANMFISGPPKKRHRGWYPGSPVSQSALVVPAPTVRPLSRTEPLL
STPVPQTPLTGILQPRPVLAGETVIVPENLLSNSGVRPVILIGYGTLPYFYGNVGDIVVS
PLLVNCYKIPQLENKDLEQLGLTSTHLLSVENMILLTIQYLVRLGPDQIPLREEFEQIML
TAMQEFSVRERALPLGAPCAPMSPAQLPWLARLAASVSQDLVHVIVTQNSLAEGISETLR
LLSEMKHYQRLPDYVVAICASKIRGNEFCVVVLGQHQSRALAESMLTTSEFLKEISYELI
TGKVSFLASHFKTTSLGDDLDKLLEKMQQRRGDSVVTPFNGDLDECVSPQEAAAMIPTQN
LDVDNETFQIYQPQLTVARRLLSQVCAIADSGSQSLDLGHFSKVDFIIIVPRSEVLVQQT
LQRVRQSGVLVDLGLEESGLAHQRAERYVVRLDNEIQSKFEVFMRRVKQNPYTLFVLVHD
NSHVELTSVISGSLSHGEPTHGLADRVINCREVLEAFNLLVLQVSSFPYTLQTQQSRISS
SNEVHWIQLDTMEDAGCEKLYFGLDEYSKSLQWGITSPLLRCDETFEKMVSTLLERYPRL
HSMVVRCYLLIQQYSEALMALTTMASLRDHSTPETLSIMDDLITSPGKNKSGKGHMLVIR
VPSVQLAMLAKERLQEVRDKLGLQYRFEIILGSPASELTVETHFVTRLKTWRGNDQDEWI
PRTYQDLEGLPCIVILTGKDPLGETFPRSLKYCDLRLIDSSYLTRTALEQEVGLACCYVS
KEVIRGPAAALDLSAKEAERVPASENDSEELLIDLERPQSNSSAVTGTSGSIMENGVSSS
STAGKPQQQLLTPTSSIRLDEGVSASTAVVGE

GREB1

GREB1
PFAM accession number:PF15782
Interpro abstract (IPR028422): GREB1 (gene regulated in breast cancer 1 protein) may play a role in estrogen-stimulated cell proliferation. It acts as a regulator of hormone-dependent cancer growth in breast and prostate cancers [(PUBMED:15986123), (PUBMED:16496412)].

This is a PFAM domain. For full annotation and more information, please see the PFAM entry GREB1