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Mutations of the silkworm molybdenum cofactor sulfurase gene, og, cause translucent larval skin.

Abstract：

:Normal silkworms (Bombyx mori) have opaque larval skin due to uric acid accumulation in the epidermis while a mutant, og, is translucent owing to a deficiency in xanthine dehydrogenase (XDH), which synthesizes uric acid. Molybdenum cofactor (MoCo) sulfurase is responsible for XDH activation in various organisms. A silkworm MoCo sulfurase gene was cloned and found to be on the og locus, whose mutant alleles, og(k) and og(t), show premature stop codons, proving that og is the MoCo sulfurase gene. It was observed that a miniature inverted-repeat transposable element (MITE), named Organdy, when inserted in an og(t) mutant allele exon, causes unstable splicing of a downstream intron leading to incomplete open reading frames.

journal_name

Insect Biochem Mol Biol

journal_title

Insect biochemistry and molecular biology

authors

Kômoto N,Sezutsu H,Yukuhiro K,Banno Y,Fujii H

doi

10.1016/s0965-1748(03)00006-7

subject

Has Abstract

pub_date

2003-04-01 00:00:00

pages

417-27

issue

4

eissn

0965-1748

issn

1879-0240

pii

S0965174803000067

journal_volume

33

pub_type

杂志文章

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