The domain within your query sequence starts at position 27 and ends at position 437; the E-value for the B56 domain shown below is 1.6e-199.

LLHIRDVPPADQEKLFIQKLRQCCVLFDFVSDPLSDLKWKEVKRAALSEMVEYITHNRNV
ITEPIYPEAVHMFAVNMFRTLPPSSNPTGAEFDPEEDEPTLEAAWPHLQLVYEFFLRFLE
SPDFQPNIAKKYIDQKFVLQLLELFDSEDPRERDFLKTTLHRIYGKFLGLRAYIRKQINN
IFYRFIYETEHHNGIAELLEILGSIINGFALPLKEEHKIFLLKVLLPLHKVKSLSVYHPQ
LAYCVVQFLEKDSTLTEPVVMALLKYWPKTHSPKEVMFLNELEEILDVIEPSEFVKIMEP
LFRQLAKCVSSPHFQVAERALYYWNNEYIMSLISDNAAKILPIMFPSLYRNSKTHWNKTI
HGLIYNALKLFMEMNQKLFDDCTQQFKAEKLKEKLKMKEREEAWVKIENLA

B56

 B56
PFAM accession number:PF01603
Interpro abstract (IPR002554):

Protein phosphatase 2A (PP2A) is a major intracellular protein phosphatase that regulates multiple aspects of cell growth and metabolism. The ability of this widely distributed heterotrimeric enzyme to act on a diverse array of substrates is largely controlled by the nature of its regulatory B subunit. There are multiple families of B subunits, this family is called the B56 family [ (PUBMED:7592815) ].

GO process:signal transduction (GO:0007165)
GO component:protein phosphatase type 2A complex (GO:0000159)
GO function:protein phosphatase regulator activity (GO:0019888)

This is a PFAM domain. For full annotation and more information, please see the PFAM entry B56