pUC19mut_circIRES11_FLuc_3HA
(Plasmid #249693)

• Purpose: This plasmid is designed to evaluate the translation efficiency of IRES11, an internal ribosome entry site derived from the 5' UTR of the maize HSP101 mRNA.
• Depositing Lab: Timo Schlemmer
• Publication: Schlemmer Lab Plasmids 2025 (unpublished)

Backbone

• Vector backbone: pUC19mut
• Backbone manufacturer: Selfmade
• Backbone size w/o insert (bp): 4642
• Vector type: Bacterial Expression, Synthetic Biology

Growth in Bacteria

• Bacterial Resistance(s): Ampicillin, 100 μg/mL
• Growth Temperature: 37°C
• Growth Strain(s): NEB Stable
• Copy number: High Copy

Gene/Insert

• Gene/Insert name: IRES of Zea mays Hsp101 mRNA
• Alt name: IRES11
• Species: Zea mays
• Insert Size (bp): 206
• Promoter: T7 Promoter
• Tag / Fusion Protein:
  • 3xHA (C terminal on insert)

Cloning Information

• Cloning method: Golden Gate

Terms and Licenses

• Academic/Nonprofit Terms:
  • UBMTA
  • Luciferase Limited Use Label License
• Industry Terms:
  • Not Available to Industry

Depositor Comments

This plasmid is designed to evaluate the translation efficiency of IRES11, an internal ribosome entry site derived from the 5' UTR of the maize HSP101 mRNA. This IRES promotes cap-independent translation, particularly under heat stress conditions, and requires the eukaryotic initiation factor eIF4G, but not eIF4E, for its activity. The function of this IRES is orientation-dependent, as an inverted version of the sequence is non-functional (Dinkova et al., 2005). The firefly luciferase (Fluc) reporter gene is positioned downstream of the IRES to enable quantitative analysis of translation efficiency through luciferase assays. A C-terminal 3xHA tag allows for the detection of Fluc expression via western blotting. This construct is primarily intended for comparative luciferase assays to assess the relative efficiency of different IRES elements in driving translation. Firefly luciferase downstream of IRES to asses translation efficiency.