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Genomics. 1991 Aug;10(4):1079-82.

Assignment of two of the translation initiation factor-4E (EIF4EL1 and EIF4EL2) genes to human chromosomes 4 and 20.

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  • 1Department of Biology, Massachusetts, Institute of Technology, Cambridge 02139.


The eukaryotic translation initiation factor (eIF-4E) has recently been cloned from human, mouse, and yeast. This polypeptide is the rate-limiting component of the eukaryotic translation apparatus and is involved in the mRNA-ribosome binding step of eukaryotic protein synthesis. We have designed oligonucleotide primers to the 3' untranslated region of the gene encoding eIF-4E and specifically amplified the human gene in human/rodent somatic cell hybrids using the polymerase chain reaction. By this method, one of the human eIF-4E genes (EIF4EL1, eukaryotic translation initiation factor 4E-like 1) has been mapped to human chromosome 4qter-4p15. In addition, we have localized a second eIF-4E gene (EIF4EL2, eukaryotic translation initiation factor 4E-like 2) to human chromosome 20 by Southern blot analysis of mapping panels established from human/rodent somatic cell hybrids.

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