Thermo Fisher Scientific CD22 (soluble) Polyclonal Antibody, PeproTech

Applications

Tested Dilution

Publications

Western Blot (WB)

0.1-0.2 µg/mL

-

ELISA (ELISA)

0.5-2.0 µg/mL

-

Product Specifications

Species Reactivity

Human

Host/Isotype

Rabbit

Class

Polyclonal

Type

Antibody

Immunogen

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Conjugate

Unconjugated Unconjugated Unconjugated

Form

Lyophilized

Concentration

0.1-1.0 mg/mL

Purification

Antigen affinity chromatography

Storage buffer

PBS

Contains

no preservative

Storage conditions

-20°C

Shipping conditions

Ambient

RRID

AB_2929912

Product Specific Information

AA Sequence of recombinant protein: SKWVFEHPET LYAWEGACVW IPCTYRALDG DLESFILFHN PEYNKNTSKF DGTRLYESTK DGKVPSEQKR VQFLGDKNKN CTLSIHPVHL NDSGQLGLRM ESKTEKWMER IHLNVSERPF PPHIQLPPEI QESQEVTLTC LLNFSCYGYP IQLQWLLEGV PMRQAAVTST SLTIKSVFTR SELKFSPQWS HHGKIVTCQL QDADGKFLSN DTVQLNVKHT PKLEIKVTPS DAIVREGDSV TMTCEVSSSN PEYTTVSWLK DGTSLKKQNT FTLNLREVTK DQSGKYCCQV SNDVGPGRSE EVFLQVQYAP EPSTVQILHS PAVEGSQVEF LCMSLANPLP TNYTWYHNGK EMQGRTEEKV HIPKILPWHA GTYSCVAENI LGTGQRGPGA ELDVQYPPKK VTTVIQNPMP IREGDTVTLS CNYNSSNPSV TRYEWKPHGA WEEPSLGVLK IQNVGWDNTT IACARCNSWC SWASPVALNV QYAPRDVRVR KIKPLSEIHS GNSVSLQCDF SSSHPKEVQF FWEKNGRLLG KESQLNFDSI SPEDAGSYSC WVNNSIGQTA SKAWTLEVLY APRRLRVSMS PGDQVMEGKS ATLTCESDAN PPVSHYTWFD WNNQSLPHHS QKLRLEPVKV QHSGAYWCQG TNSVGKGRSP LSTLTVYYSP ETIGRR.

Preparation: Produced from sera of rabbits immunized with highly pure Recombinant Human sCD22. Anti-Human sCD22-specific antibody was purified by affinity chromatography employing an immobilized hHuman sCD22 matrix.

Sandwich ELISA: To detect Human sCD22 by sandwich ELISA (using 100 µL/well antibody solution) a concentration of 0.5-2.0 µg/mL of this antibody is required. This antigen affinity purified antibody, in conjunction with PeproTech Biotinylated Anti-Human sCD22 (500-P227Bt) as a detection antibody, allows the detection of at least 0.2-0.4 ng/well of Recombinant Human sCD22.

Western Blot: To detect Human sCD22 by Western Blot analysis this antibody can be used at a concentration of 0.1-0.2 µg/mL. Used in conjunction with compatible secondary reagents the detection limit for Recombinant Human sCD22 is 1.5-3.0 ng/lane, under either reducing or non-reducing conditions.

Target Information

CD22 (BL-CAM) is a type 1 integral membrane glycoprotein with molecular weight of 130 to 140 kDa. CD22 is expressed in both the cytoplasm and cell membrane of B-lymphocytes. CD22 antigen appears early in B-cell lymphocyte differentiation at approximately the same stage as the CD19 antigen. Unlike other B-cell markers, CD22 membrane expression is limited to the late differentiation stages comprised between mature B cells (CD22+) and plasma cells (CD22-), and may thus prove useful in phenotyping mature leukemias. CD22 is also strongly expressed in hairy cell leukemia. CD22 preferentially binds to alpha2,6-linked sialic acid. The sialic acid recognition site can be masked by cis interactions with sialic acids on the same cell surface. Upon ligand induced tyrosine phosphorylation in the immune response seems to be involved in regulation of B cell antigen receptor signaling. CD22 plays a role in positive regulation through interaction with Src family tyrosine kinases and may also act as an inhibitory receptor by recruiting cytoplasmic phosphatases via their SH2 domains that block signal transduction through dephosphorylation of signaling molecules. CD22 is also strongly expressed in hairy cell leukemia. CD22 is also positive in diffuse large B-cell lymphoma and nodular lymphocyte predominance Hodgkins lymphoma, but negative in classical Hodgkins lymphoma.

For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.