Ascorbate-dependent expression of ubiquitin genes in guinea pigs

Akifumi Mizutani, Nobuaki Nakagawa, Kiyotaka Hitomi, Norihiro Tsukagoshi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In an attempt to characterize gene(s), of which the expression is ascorbate-dependent, a cDNA fragment encoding ubiquitin was isolated from a subtracted cDNA library constructed from spleen RNAs of ascorbate-deficicent or -replete guinea pigs. On Northern blot analysis, three transcripts (1.8 kb ubiX, 1.3 kb ubiY and 0.7 kb ubiZ) were detected. The ubiY encodes four direct repents of tile 76 amino acid ubiquitin sequence with seven additional amino acids, V-Y-A-S-P-I-F, at the C-terminus. The transcript ubiX appears to comprise more than five repents of the ubiquitin-encoding unit. The ubiZ encodes a ubiquitin monomer fused to an 80 amino acid extension exhibiting 100% amino acid sequence identity to the human homolog, HUMUBA80R. The ubiX gene was expressed animal-dependently. The ubiY mRNA levels decreased under ascorbate-deficient conditions, and increased under ascorbate-replete conditions, whereas ubiZ mRNA remained unaltered at low levels under the feeding conditions used here.

Original languageEnglish
Pages (from-to)575-582
Number of pages8
JournalInternational Journal of Biochemistry and Cell Biology
Volume29
Issue number4
DOIs
Publication statusPublished - Apr 1997
Externally publishedYes

Fingerprint

Ubiquitin
Guinea Pigs
Genes
Gene Expression
Amino Acids
Amino Acid Sequence
Messenger RNA
Tile
Gene Library
Northern Blotting
Animals
Spleen
Complementary DNA
Monomers
RNA

Keywords

  • Ascorbate
  • Guinea pig
  • Subtracted cDNA library
  • Ubiquitin expression
  • Ubiquitin genes

ASJC Scopus subject areas

  • Biochemistry
  • Cell Biology

Cite this

Ascorbate-dependent expression of ubiquitin genes in guinea pigs. / Mizutani, Akifumi; Nakagawa, Nobuaki; Hitomi, Kiyotaka; Tsukagoshi, Norihiro.

In: International Journal of Biochemistry and Cell Biology, Vol. 29, No. 4, 04.1997, p. 575-582.

Research output: Contribution to journalArticle

Mizutani, Akifumi ; Nakagawa, Nobuaki ; Hitomi, Kiyotaka ; Tsukagoshi, Norihiro. / Ascorbate-dependent expression of ubiquitin genes in guinea pigs. In: International Journal of Biochemistry and Cell Biology. 1997 ; Vol. 29, No. 4. pp. 575-582.
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