A study of the enzymatic and other properties of the crystalline style of clams: Evidence for the presence of a cellulase

Lavine, Theodore F.

doi:10.1002/jcp.1030280203

Cited by 24 publications

(6 citation statements)

References 15 publications

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“…The presence of cellulase activity in the digestive tract and crystalline styles of molluscs was previously assumed (e.g., Lavine 1946) to originate from symbiotic microorganisms in the style and gut, not from the animal itself. Within the past decade, however, it has become apparent that many invertebrate taxa (Watanabe & Tokuda 2001) produce enzymes that are capable of hydrolyzing the b-1,4 glycosidic bonds that link the glucose subunits of the cellulose polymer.…”

Section: Discussionmentioning

confidence: 98%

Polysaccharidases in the Crystalline Styles of Selectively Bred Greenshell Mussel (Perna canaliculusGmelin) Families

MacKenzie

Marshall

2014

Journal of Shellfish Research

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Assays of chitinase, cellulase, and amylase activities in the crystalline styles of selected fast-and slow-growing families of the mussel Perna canaliculus were carried out on 2 occasions over 6 mo, during which time the shellfish grew in a normal mussel cultivation situation. The data did not support the hypothesis that differences in growth rate by these families could be related to differences in the expression of digestive enzymes in the styles, leading to improved nutritional efficiency by faster growing families. On the contrary, the styles of faster growing families in general exhibited lower rates of enzyme activity. Differences in enzyme activities between families appeared to be related to the size of the individuals rather than their genetic heritage. The crystalline styles of larger, more mature shellfish contained less moisture and less soluble protein, and the lower rates of enzyme activity in larger individuals may be indicative of a reallocation of style protein synthesis toward higher levels of insoluble structural proteins.

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Section: Discussionmentioning

confidence: 98%

Polysaccharidases in the Crystalline Styles of Selectively Bred Greenshell Mussel (Perna canaliculusGmelin) Families

MacKenzie

Marshall

2014

Journal of Shellfish Research

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“…Nair (1955) in Bankia and Venugopalan (955) in Sanguinolaria. The chemical nature of the crystalline style was worked out by various investigators such as Barrais (889), List (902), Nelson (1918), Berkeley (1935), Laevine (1946) and Venugopalan (I955). They showed that the style chiefly contained globulin with an amylase and a weak maltase (Yonge,926).…”

Section: Discussionmentioning

confidence: 99%

A study on the crystalline style of the freshwater mussel, parreysia corrugata

Lomte

Jadhav

1980

Hydrobiologia

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The crystalline style of Parreysia corrugate is a flexible, gelatinous rod of glyco-protein, protrudes from the style sac and impinges on the gastric shield. The style is insoluble in glycerine, alcohol, acetic acid and other dilute acids but it dissolves in distilled water and has a pH 7.0. It contains twelve free amino acids and fourteen protein-bound amino acids. The enzyme amylase was found to be present.

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“…As well as the invariable amylase, George (1952) records a lipase in the style of Anodonta; and in a number of bivalves a style cellulase has now been identified (Lavine, 1946;Newell, 1953;Stone & Morton, 1958).…”

Section: €0 Imentioning

confidence: 99%

The Functions of the Gut in Ciliary Feeders

Morton

1960

Biological Reviews

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A study of the enzymatic and other properties of the crystalline style of clams: Evidence for the presence of a cellulase

Cited by 24 publications

References 15 publications

Polysaccharidases in the Crystalline Styles of Selectively Bred Greenshell Mussel (Perna canaliculusGmelin) Families

Polysaccharidases in the Crystalline Styles of Selectively Bred Greenshell Mussel (Perna canaliculusGmelin) Families

A study on the crystalline style of the freshwater mussel, parreysia corrugata

The Functions of the Gut in Ciliary Feeders

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