Alternative Name(s):

C3B/C4B inactivator (If)

Species: (Organism)

Rattus norvegicus (Rat)

Gene Names:

Cfi

Tag info:

N-terminal 10xHis-tagged and C-terminal Myc-tagged

Target Protein AA Sequence:

KNTPASGQPQEDLVEQKCLLKNYTHHSCDKVFCQPWQKCIEGTCACKLPYQCPKAGTPVCATNGRGYPTYCHLKSFECLHPEIKFSNNGTCTAEEKFNVSLIYGSTDTEGIVQVKLVDQDEKMFICKNSWSTVEANVACFDLGFPLGVRDIQGRFNIPVNHKINSTECLHVRCQGVETSLAECTFTKKSSKAPHGLAGVVCYTQDADFPTSQSFQCVNGKRIPQEKACDGVNDCGDQSDELCCKGCRGQAFLCKSGVCIPNQRKCNGEVDCITGEDESGCEEDKKNKIHKGLARSDQGGETEIETEETEMLTPDMDTERKRIKSLLPKLSCGVKRNTHIRRKRVVGGKPAEMGDYPWQVAIKDGDRITCGGIYIGGCWILTAAHCVRPSRYRNYQVWTSLLDWLKPNSQLAVQGVSRVVVHEKYNGATYQNDIALVEMKKHPGKKECELINSVPACVPWSPYLFQPNDRCIISGWGREKDNQKVYSLRWGEVDLIGNCSRFYPGRYYEKEMQCAGTSDGSIDACKGDSGGPLVCKDVNNVTYVWGIVSWGENCGKPEFPGVYTRVASYFDWISYYVGRPLVSQYNV

Expression Region:

19-604aa

Subcellular Location:

Tissue Specificity:

Protein Length:

Full Length of Mature Protein

Pathway:

Mol. Weight:

69.2 kDa

Purity:

Greater than 85% as determined by SDS-PAGE.

Form:

Liquid or Lyophilized powder

Buffer:

If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.

Research Areas:

Epigenetics and Nuclear Signaling

Function:

Involvement in disease:

Relevance:

Trypsin-like serine protease that plays an essential role in regulating the immune response by controlling all complement pathways. Inhibits these pathways by cleaving three peptide bonds in the alpha-chain of C3b and two bonds in the alpha-chain of C4b thereby inactivating these proteins. Essential cofactors for these reactions include factor H and C4BP in the fluid phase and membrane cofactor protein/CD46 and CR1 on cell surfaces. The presence of these cofactors on healthy cells allows degradation of deposited C3b by CFI in order to prevent undesired complement activation, while in apoptotic cells or microbes, the absence of such cofactors leads to C3b-mediated complement activation and subsequent opsonization.

Reconstitution:

We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.

Protein Families:

Reference:

"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004)