SERPING1, also known as plasma protease C1 inhibitor, is a protease inhibitor belonging to the serpin superfamily. This protein is the physiological inhibitor of activated C1r and C1s, two serine proteases involved in the classical complement pathway. Also, it has a 2-domain structure, unlike most family members. The C-terminal serpin domain is similar to other serpins, and this part of this inhibitor provides the inhibitory activity. C1-inhibitor is highly glycosylated, bearing both N- and O-glycans. Deficiency of this protein results in hereditary angioedema, which is characterized by recurrent episodes of localized angioedema of the skin, gastrointestinal mucosa or upper respiratory mucosa. It is an attractive therapeutic protein to treat inflammatory diseases other than HAE. Description: Recombinant protein corresponding to aa23-500 of human SERPING1, fused to His-tag at C-terminus, expressed in Baculovirus Molecular Weight: ~54.2kD (489aa), ~70-100kD (SDS-PAGE under reducing conditions) Endotoxin: <0.1EU/1ug (LAL) AA Sequence: ADPEFNPNAT SSSSQDPESL QDRGEGKVAT TVISKMLFVE PILEVSSLPT TNSTTNSATK ITANTTDEPT TQPTTEPTTQ PTIQPTQPTT QLPTDSPTQP TTGSFCPGPV TLCSDLESHS TEAVLGDALV DFSLKLYHAF SAMKKVETNM AFSPFSIASL LTQVLLGAGE NTKTNLESIL SYPKDFTCVH QALKGFTTKG VTSVSQIFHS PDLAIRDTFV NASRTLYSSS PRVLSNNSDA NLELINTWVA KNTNNKISRL LDSLPSDTRL VLLNAIYLSA KWKTTFDPKK TRMEPFHFKN SVIKVPMMNS KKYPVAHFID QTLKAKVGQL QLSHNLSLVI LVPQNLKHRL EDMEQALSPS VFKAIMEKLE MSKFQPTLLT LPRIKVTTSQ DMLSIMEKLE FFDFSYDLNL CGLTEDPDLQ VSAMQHQTVL ELTETGVEAA AASAISVART LLVFEVQQPF LFVLWDQQHK FPVFMGRVYD PRAHHHHHH Storage and Stability: May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing.. Store at -20C. Aliquots are stable for 6 months after receipt at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
