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The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.

Identification of a new, abundant superfamily of mammalian LTR-transposons

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Smit, Arian F.A.·1993·Nucleic Acids Research

Abstract

A new superfamily of mammalian transposable genetic elements is described with an estimated 40,000 to 100,000 members in both primate and rodent genomes. Sequences known before as MT, ORR-1, MstII, MER15 and MER18 are shown to represent (part of) the long terminal repeats of retrotransposon-like elements related to THE1 in humans. These transposons have structural similarities to retroviruses. However, the putative product of a 1350 base pair open reading frame detected in the consensus internal sequence of THE1 does not resemble retroviral proteins. The elements are named 'Mammalian apparent LTR-retrotransposons' (MaLRs). The internal sequence is usually found to be excised. Their presence in rodents, artiodactyls, lagomorphs, and primates, the divergence of the individual elements from their consensus, and the existence of a probably orthologous element in mouse and man suggest that the first MaLRs were distributed before the radiation of eutherian mammals 80-100 million years ago. MaLRs may prove to be very helpful in determining the evolutionary branching pattern of mammalian orders and suborders.

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Metadata

Authors
Smit, A. F. A.
Venue
Nucleic Acids Research
Published
1993
Volume
21
Issue
8
Pages
1863-1872
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W2048492425
Cited by
234
References
3
FWCI
8.22
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Identification of a new, abundant superfamily of mammalian LTR-transposons. https://app.cochat.ai/papers/10.1093/nar/21.8.1863
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Smit, A. F. A. (1993). Identification of a new, abundant superfamily of mammalian LTR-transposons. Nucleic Acids Research. https://doi.org/10.1093/nar/21.8.1863

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