LIN28A blocking peptide

LIN28A Blocking Peptide (N-term)

• Gene Names: LIN28A; CSDD1; LIN28; LIN-28; ZCCHC1; lin-28A
• Synonyms: LIN28A; LIN28A Blocking Peptide (N-term); Protein lin-28 homolog A; Lin-28A; Zinc finger CCHC domain-containing protein 1; CSDD1; LIN28; ZCCHC1; LIN28A blocking peptide

• Specificity: The synthetic peptide sequence is selected from aa 22-36 of HUMAN LIN28A
• Form/Format: Synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml DI water for a final concentration of 1 mg/ml.
• Sequence Length: 209

• Cellular Location: Cytoplasm. Nucleus, nucleolus. Note: Nucleolar localization observed in 10-15% of the nuclei in differentiated myotubes (By similarity). Shuttles between the cytoplasm and the nucleus. Localizes to cytoplasmic processing bodies and stress granules.
• Tissue Location: Expressed in embryonic stem cells (ES cells), placenta and testis.
• Preparation and Storage: Maintain refrigerated at 2-8 degree C for up to 6 months. For long term storage store at -20 degree C.

Related Product Information for LIN28A blocking peptide

Acts as a 'translational enhancer', driving specific mRNAs to polysomes and thus increasing the efficiency of protein synthesis. Its association with the translational machinery and target mRNAs results in an increased number of initiation events per molecule of mRNA and, indirectly, in stabilizing the mRNAs. Binds IGF2 mRNA, MYOD1 mRNA, ARBP/36B4 ribosomal protein mRNA and its own mRNA. Essential for skeletal muscle differentiation program through the translational up-regulation of IGF2 expression (By similarity). Acts as a suppressor of microRNA (miRNA) biogenesis by specifically binding the precursor let-7 (pre-let- 7), a miRNA precursor. Acts by binding pre-let-7 and recruiting ZCCHC11/TUT4 uridylyltransferase, leading to the terminal uridylation of pre-let-7. Uridylated pre-let-7 miRNAs fail to be processed by Dicer and undergo degradation. Degradation of pre- let-7 in embryonic stem (ES) cells contributes to the maintenance of ES cells. In contrast, LIN28A down-regulation in neural stem cells by miR-125, allows the processing of pre-let-7. Specifically recognizes the 5'-GGAG-3' motif in the terminal loop of pre-let-7. Also recognizes and binds non pre-let-7 pre-miRNAs that contain the 5'-GGAG-3' motif in the terminal loop, leading to their terminal uridylation and subsequent degradation.

NCBI and Uniprot Product Information

• NCBI GI #: 74752750
• NCBI GeneID: 79727
• UniProt Accession #: Q9H9Z2
• Molecular Weight: 22,743 Da
• NCBI Official Full Name: Protein lin-28 homolog A
• NCBI Official Synonym Full Names: lin-28 homolog A
• NCBI Official Symbol: LIN28A
• NCBI Official Synonym Symbols: CSDD1; LIN28; LIN-28; ZCCHC1; lin-28A
• NCBI Protein Information: protein lin-28 homolog A
• UniProt Protein Name: Protein lin-28 homolog A
• Protein Family: Protein
• UniProt Gene Name: LIN28A
• UniProt Synonym Gene Names: CSDD1; LIN28; ZCCHC1; Lin-28A
• UniProt Entry Name: LN28A_HUMAN

NCBI Description

This gene encodes a LIN-28 family RNA-binding protein that acts as a posttranscriptional regulator of genes involved in developmental timing and self-renewal in embryonic stem cells. The encoded protein functions through direct interaction with target mRNAs and by disrupting the maturation of certain miRNAs involved in embryonic development. This protein prevents the terminal processing of the LET7 family of microRNAs which are major regulators of cellular growth and differentiation. Aberrant expression of this gene is associated with cancer progression in multiple tissues. [provided by RefSeq, Sep 2015]

Uniprot Description

LIN28A: Acts as a 'translational enhancer', driving specific mRNAs to polysomes and thus increasing the efficiency of protein synthesis. Its association with the translational machinery and target mRNAs results in an increased number of initiation events per molecule of mRNA and, indirectly, in stabilizing the mRNAs. Binds IGF2 mRNA, MYOD1 mRNA, ARBP/36B4 ribosomal protein mRNA and its own mRNA. Essential for skeletal muscle differentiation program through the translational up-regulation of IGF2 expression. Acts as a suppressor of microRNA (miRNA) biogenesis by specifically binding the precursor let-7 (pre-let- 7), a miRNA precursor. Acts by binding pre-let-7 and recruiting ZCCHC11/TUT4 uridylyltransferase, leading to the terminal uridylation of pre-let-7. Uridylated pre-let-7 miRNAs fail to be processed by Dicer and undergo degradation. Degradation of pre- let-7 in embryonic stem (ES) cells contributes to the maintenance of ES cells. In contrast, LIN28A down-regulation in neural stem cells by miR-125, allows the processing of pre-let-7. Specifically recognizes the 5'-GGAG-3' motif in the terminal loop of pre-let-7. Also recognizes and binds non pre-let-7 pre-miRNAs that contain the 5'-GGAG-3' motif in the terminal loop, leading to their terminal uridylation and subsequent degradation. Monomer. During skeletal muscle differentiation, associated with translation initiation complexes in the polysomal compartment. Directly interacts with EIF3S2. Interaction with NCL is RNA-dependent. Interacts with ZCCHC11/TUT4. Can be negatively regulated by the interaction of microRNAs miR-125a and miR-125b with at least two miRNA responsive elements (miREs) in the 3'-UTR of this gene. These interactions may reduce both translation efficiency and mRNA abundance. Negatively regulated by retinoic acid. Expressed in embryonic stem cells (ES cells), placenta and testis. Belongs to the lin-28 family.

Protein type: Translation; RNA-binding; Nucleolus

Chromosomal Location of Human Ortholog: 1p36.11

Cellular Component: cytoplasm; cytosol; nucleus; stress granule

Molecular Function: protein binding; RNA binding

Biological Process: pre-microRNA processing; RNA 3'-end processing; somatic stem cell maintenance; stem cell maintenance