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EF-1 Alpha (EF1a) Promoter Vectors

Features & Benefits

  • Constitutive mammalian promoter
  • Good alternative for expression in cells with low CMV promoter activity


Human elongation factor-1 alpha (EF-1 alpha) is a constitutive promoter of human origin that can be used to drive ectopic gene expression in various in vitro and in vivo contexts.

EF-1 alpha (or EF1a) is often useful in conditions where other promoters (such as CMV) have diminished activity or have been silenced (as in embryonic stem cells).

EF-1 alpha promoter vectors are available in multiple formats for either plasmid or lentiviral delivery:

- Fluorescent protein fusion vectors
- IRES vectors for coexpression of 2 genes
- Vectors with either Myc- or HA-tags for protein purification

Additional information

Ordering information

Westburg is not entitled to supply this product in your country.
Please visit the Clontech website to find your local distributor.

Rest of the world
Cat no. Description
631970 pEF1a-IRES Vector
631969 pEF1a-mCherry-N1 Vector
631971 pEF1a-IRES-AcGFP1 Vector
631972 pEF1a-mCherry-C1 Vector
631973 pEF1a-AcGFP1-N1 Vector
631974 pEF1a-AcGFP1-C1 Vector
631975 pEF1a-tdTomato Vector
631976 pEF1a-IRES-ZsGreen1 Vector
631977 pEF1a-DsRed-Monomer-C1 Vector
631978 pEF1a-DsRed-Monomer-N1 Vector
631979 pEF1a-DsRed-Express2 Vector
631980 pEF1a-IRES-DsRed-Express2 Vector
631981 pEF1a-E2-Crimson Vector
631991 pEF1a-Myc Vector
631992 pEF1a-HA Vector
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