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Updated: Jul 12, 2026

Chromatin Immunoprecipitation in the Cnidarian Model System Exaiptasia diaphana

Chromatin Immunoprecipitation in the Cnidarian Model System Exaiptasia diaphana

Published on: March 17, 2023

Chitin in sea anemone shells.

D F Dunn, M H Liberman

Science (New York, N.Y.)

|July 8, 1983

Summary

This study confirms that sea anemones can synthesize chitin, a biopolymer found widely in nature. Chitin was identified in the shell of the actinian Stylobates, adding to its known presence in coelenterates.

Area of Science:

Marine Biology
Biochemistry
Zoology

Background:

Chitin is a prevalent biopolymer in nature, found in various life forms.
Its presence is documented in Hydrozoa and some Scyphozoa, with hard corals synthesizing it but soft corals not.
The distribution and synthesis of chitin in Cnidaria, particularly Anthozoa, require further investigation.

Purpose of the Study:

To investigate the presence and synthesis of chitin in sea anemones (Anthozoa).
To confirm the ability of sea anemones to produce chitin, a key structural polysaccharide.

Main Methods:

Infrared spectrophotometry was employed to identify chitin.
Analysis was performed on the trochoid shell of the actinian Stylobates.

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Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper

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Identification of Hemolytic and Phospholipase Activity in Crude Extracts from Sea Anemones by Straightforward Bioassays

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Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper

Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper

Published on: February 27, 2021

Main Results:

Chitin was successfully identified in the shell of the actinian Stylobates.
Chitin constituted 1.7% of the shell's weight, with the remainder likely being protein.

Conclusions:

The synthesis of chitin by sea anemones is confirmed.
This finding expands the known range of chitin synthesis within the class Anthozoa.