Purity ~90% (SDS-PAGE). HSPB11, also known as PP25, is detected in placenta. Source: Recombinant corresponding to aa1-144 from human HSPB11, fused to His-tag at N-terminus expressed in E.coli. AA Sequence: MGSSHHHHHH SSGLVPRGSH MRKIDLCLSS EGSEVILATS SDEKHPPENI IDGNPETFWT TTGMFPQEFI ICFHKHVRIE RLVIQSYFVQ TLKIEKSTSK EPVDFEQWIE KDLVHTEGQL QNEEIVAHDG SATYLRFIIV SAFDHFASVH SVSAEGTVVS NLSS Molecular Weight: ~18.5kD (164aa), confirmed by MALDI-TOF