Apparent deficiency of metallothionein in the liver of the Antarctic icefish Chionodraco hamatus. Identification and isolation of a zinc-containing protein unlike metallothionein

Comp Biochem Physiol B. 1992 Sep;103(1):201-7. doi: 10.1016/0305-0491(92)90432-q.

Abstract

1. A zinc-binding protein has been isolated and purified from the liver of the icefish Chionodraco hamatus. 2. The icefish Zn-protein has characteristics distinct from those of metallothionein. 3. The amino acid composition shows a low content of cysteine and a high content of glutamate and aspartate. 4. No metallothionein has been detected in the extracts from icefish liver.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acids / analysis
  • Animals
  • Carrier Proteins / chemistry
  • Carrier Proteins / isolation & purification*
  • Carrier Proteins / metabolism
  • Cricetinae
  • Fishes / metabolism*
  • Liver / chemistry*
  • Metallothionein / analysis
  • Metallothionein / deficiency
  • Molecular Weight
  • Rats
  • Sheep
  • Species Specificity
  • Zinc / metabolism*

Substances

  • Amino Acids
  • Carrier Proteins
  • zinc-binding protein
  • Metallothionein
  • Zinc