Solute carrier family 22 member 5 mRNA (SLC22A5 mRNA)

Solute carrier family 22 member 5 (SLC22A5) mRNA encodes the Organic Cation/Carnitine Transporter 2 (OCTN2), a vital transmembrane protein responsible for the sodium-dependent uptake of L-carnitine into cells [UniProt: O76082]. L-carnitine is essential for the shuttle of long-chain fatty acids into the mitochondria for beta-oxidation, making SLC22A5 critical for energy metabolism [NCBI Gene: 6584]. Mutations in the SLC22A5 gene lead to Systemic Primary Carnitine Deficiency (SPCD), a condition that can cause life-threatening cardiomyopathy, skeletal myopathy, and hypoketotic hypoglycemia [OMIM: 603377]. As a therapeutic target, SLC22A5 mRNA is primarily being investigated for mRNA replacement therapy, where synthetic mRNA is delivered to patients to restore functional OCTN2 protein and normalize carnitine levels [PubMed: 29653124]. While the prompt mentions 'ETT1', this alias is more commonly associated with the related transporter SLC22A4 (OCTN1), highlighting a potential nomenclature overlap in the classification of organic cation transporters. The protein product of this mRNA also interacts with various pharmacological agents, including inhibitors like mildronate and substrates like L-carnitine, which are used to manage metabolic and cardiovascular conditions [PubChem: CID 163157].

Other names

OCTN2 mRNAOrganic cation/carnitine transporter 2 mRNACDSP mRNAETT1 (misnomer for SLC22A5)Systemic primary carnitine deficiency protein mRNA

mRNA replacement therapy to restore functional OCTN2 protein expression for carnitine transport