Bifunctional glyoxylate cycle protein of Caenorhabditis elegans: A developmentally regulated protein of intestine and muscle

Feizhou Liu, Jack D. Thatcher, Jose M. Barral, Henry F. Epstein

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

The reaction of an abundant 106-kDa polypeptide with a specific monoclonal antibody has been localized in intestinal and muscle cells of the nematode Caenorhabditis elegans. This protein was first detected in 4-6 cells of the clonal E lineage of 100-cell embryos. This lineage is committed to the intestinal cell fate. The antigen continued to be expressed in the differentiating gut and then appeared in early differentiating body wall muscle cells of 400- to 500-cell embryos. Molecular cloning and sequencing showed that the largest cDNA clone contained 3274 bp and encoded a sequence of 1005 amino acids. The predicted polypeptide of 112,799 MW contains separate domains for the glyoxylate cycle enzymes isocitrate lyase and malate synthase. Their enzymatic activities had been shown previously to be highest in embryos and L1 larvae (Khan, F. R., and McFadden, B. A. (1980). FEBS Lett. 115, 312-314; Khan, F. R., and McFadden, B. A. (1982). Exp. Parasitol. 54, 48-54; Wadsworth, W. G., and Riddle, D. L. (1989). Dev. Biol. 132, 167-173). The domain-specific sequences were shown to be contiguous in genomic DNA and are separated by an intron of 68 bp. A single polypeptide and both enzymatic activities are precipitated by the antibody, and peptide fragments resulting from limited proteolytic digestion contained amino acid sequences which overlap the predicted junctional region. The physical localization of the gone correlates with a small region of the left arm of Linkage Group V to which multiple embryonic lethal mutations have been mapped.

Original languageEnglish (US)
Pages (from-to)399-414
Number of pages16
JournalDevelopmental Biology
Volume169
Issue number2
DOIs
StatePublished - 1995
Externally publishedYes

Fingerprint

Caenorhabditis elegans Proteins
Muscle Proteins
Intestines
Embryonic Structures
Muscle Cells
Peptides
Amino Acid Sequence
Malate Synthase
Isocitrate Lyase
Immunoglobulin Fragments
Peptide Fragments
Caenorhabditis elegans
Molecular Cloning
Introns
Larva
Digestion
Complementary DNA
Clone Cells
Monoclonal Antibodies
Antigens

ASJC Scopus subject areas

  • Developmental Biology
  • Molecular Biology
  • Cell Biology

Cite this

Bifunctional glyoxylate cycle protein of Caenorhabditis elegans : A developmentally regulated protein of intestine and muscle. / Liu, Feizhou; Thatcher, Jack D.; Barral, Jose M.; Epstein, Henry F.

In: Developmental Biology, Vol. 169, No. 2, 1995, p. 399-414.

Research output: Contribution to journalArticle

Liu, Feizhou ; Thatcher, Jack D. ; Barral, Jose M. ; Epstein, Henry F. / Bifunctional glyoxylate cycle protein of Caenorhabditis elegans : A developmentally regulated protein of intestine and muscle. In: Developmental Biology. 1995 ; Vol. 169, No. 2. pp. 399-414.
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