Human(1029) Summary: This gene generates several transcript variants which differ in their first exons. At least three alternatively spliced variants encoding distinct proteins have been reported, two of which encode structurally related isoforms known to function as inhibitors of CDK4 kinase. The remaining transcript includes an alternate first exon located 20 Kb upstream of the remainder of the gene; this transcript contains an alternate open reading frame (ARF) that specifies a protein which is structurally unrelated to the products of the other variants. This ARF product functions as a stabilizer of the tumor suppressor protein p53 as it can interact with, and sequester, the E3 ubiquitin-protein ligase MDM2, a protein responsible for the degradation of p53. In spite of the structural and functional differences, the CDK inhibitor isoforms and the ARF product encoded by this gene, through the regulatory roles of CDK4 and p53 in cell cycle G1 progression, share a common functionality in cell cycle G1 control. This gene is frequently mutated or deleted in a wide variety of tumors, and is known to be an important tumor suppressor gene. [provided by RefSeq, Sep 2012]
Save up to 60% per TRCN when you buy a set with the same options.
MISSION® siRNAs have been designed using a world-class siRNA design algorithm licensed from Rosetta Inpharmatics, a leader in advanced siRNA research. The Rosetta-powered siRNA design algorithm has been optimized with over 3 years of continuous development for enhanced performance in RNAi applications. New and critical siRNA design rules incorporated into the latest algorithm lead to increased target specificity and knockdown for low abundance messages.
Validated MISSION® siRNAs have been functionally validated in Hela cells by Sigma scientists to Knockdown gene expression by 75% or greater. With Validated MISSION® siRNAs, we have done the upfront validation work, so that you do not have to.
Custom Gene Products
Our expertise in DNA & RNA oligo design, chemistry and manufacturing enable Sigma Custom Products to provide a comprehensive product portfolio. Learn more about our "custom capabilities & extensive options today."
siRNA ranking are listed in order of expected efficacy (1 being the best) as predicted by the Rosetta algorithm. All predesigned siRNA carry the Sigma-Aldrich guarantee.
