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SIK3, Active

Recombinant human SIK3 (1-307) was expressed by baculovirus in Sf9 insect cells using an N-terminal GST tag.
Catalog No. S12-11G

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Catalog No. Pack Size Price (USD)
S12-11G-05 5 ug $226
S12-11G-10 10 ug $325
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SIK3 (QSK) is a serine/threonine-protein kinase, belongs to QIK subfamily. The phosphorylation of SIK3 by LKB1 through the 14-3-3 binding enhances its catalytic activity and leads its localization to punctate structures within the cytoplasm (1). Overexpression of SIK3 promotes G1/S cell cycle progression with ovarian cancer (2). There are two sites (H331L and A1103V) were mutated at significant frequency in breast cancer (3). SIK3 is a novel tumor-associated antigen (TAA).

Gene Aliases:

QSK; SIK-3; L19; FLJ12240; KIAA0999

Genbank Number:


1. Al-Hakim A.K., et.al: 14-3-3 cooperates with LKB1 to regulate the activity and localization of QSK and SIK. J. Cell Sci. 118:5661-5673(2005).

2. Charoenfuprasert S, et.al: Identification of salt-inducible kinase 3 as a novel tumor antigen associated with tumorigenesis of ovarian cancer. Oncogene. 2011 Aug 18;30(33):3570-84.

3. Sjoeblom T. et.al: The consensus coding sequences of human breast and colorectal cancers. Science 314:268-274(2006).

Specific Activity:

Sample Kinase Activity Plot. For specific information on a given lot, see related technical data sheet.


Sample Purity Data. For specific information on a given lot, see related technical data sheet.

Storage, Stability and Shipping:

Store product at –70oC. For optimal storage, aliquot target into smaller quantities after centrifugation and store at recommended temperature. For most favorable performance, avoid repeated handling and multiple freeze/thaw cycles.

Molecular Weight:

~62 kDa


Cancer, Ser/Thr Kinases


  Kinase Dilution Buffer III, K23-09

  Kinase Assay Buffer I, K01-09

  ATP Stock Solution, A50-09

  AMARA Peptide, A11-58



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