6533b835fe1ef96bd129fd02

RESEARCH PRODUCT

Biological protective substances in Marthasterias glacialis (Asteroidea) epidermal secretion

G. D'anconaC. Canicattí

subject

Goblet cellProteasebiologymedicine.medical_treatmentCarbohydratebiology.organism_classificationMicrobiologymedicine.anatomical_structureGranular cellBiochemistryMucous secretionmedicineAnimal Science and ZoologyMarthasteriasSecretionEcology Evolution Behavior and SystematicsBacteria

description

Marthasterias glacialis secretes a watery mucous liquid consisting of 14% carbohydrate and 86% protein. The mucous secretion possesses different biological active molecules responsible for lysozyme-like, protease and haemolytic activities. These substances could constitute a molecular barrier playing a protective role against the penetration by bacteria, fungi and parasites. The secretory apparatus consists of two unicellular glands, a large goblet cell and a granular cell, which open directly into the epidermis.

https://doi.org/10.1111/j.1469-7998.1990.tb04043.x