Technical Data
Complement C1q, Human (Biotin)
Acrp30 (adipocyte complement-related protein of 30kD), also known as AdipoQ, APM1, Adiponectin, Gelatin binding protein 28kD/GBP28 or adipocyte most abundant gene transcript) was identified as a novel adipocyte-specific synthesized and secreted protein with structural resemblance to complement factor C1q. Like adipsin, Acrp30 secretion is induced ~10-fold during adipocyte differentiation. Plasma levels are reduced in obese humans, and low levels are associated with insulin-resistance. C1q is serum glycoprotein of 18-polypeptides chains consisting of three nonidentical subunits, A (29kD), B (26kD), and C (246 aa, 19kD)
in molar ratio of 1:2:2. C1Q in the plasma is complexed with two proenzymes C1r and two C1s molecule to form the first component of complement (C1). Activation of complement via classical pathway is triggered by binding of globular head of C1q to immune complexes containing IgG (Fc-region) or IgM or to a variety of other activating substances, including C-reactive protein, retrovirus, and mitochondria. Subsequent to C1q binding, c1r and C1s are converted to proteolytic enzymes that are responsible to continuation of activation via the classical pathway.

Suitable for use in ELISA and Western Blot. Other applications not tested.

Recommended Dilutions:
ELISA: 1-2ug/ml. Use 10-100ng of control antigen per well.
Western Blot: 1-10ug/ml (ECL)
Optimal dilutions to be determined by the researcher.

Storage and Stability:
Lyophilized powder may be stored at -20C. Stable for 12 months at -20C. Reconstitute with sterile PBS. Aliquot to avoid repeated freezing and thawing. Store at -20C. Reconstituted product is stable for 12 months 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.

50ug-20CBlue IceHumanMouse
Human Complement C1q
Supplied as a lyophillized powder from PBS, pH 7.4, 0.2% BSA, 0.05% sodium azide. Labeled with Biotin. Reconstitute with 250ul sterile PBS.
Recognizes human Complement C1q.
Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.
1. Loos et al (1980) J. Immunol. 124, 59; 2. Kolb WP et al (1979) J. Immunol. 122, 2103; 3. Petry F et al (1996) Immunogenetics 43, 370; 4. Scherer PE et al (1995) JBC 270, 26746; 5. Hu E et al (1996) JBC 271, 10697; 6. Das K et al (2001) BBRC 280, 1120; 7. Fruebis J et al (2001) PNAS 98, 2005; 8. Maeda K et al (1996) BBRC 221, 286, 9. Schaffler A et al (1998) BBA 1399, 187; 10. Schaffler A et al (1999) BBRC 260, 416.