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Investigation on Mollusc Lectins

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Aquatic Lectins

Abstract

Mollusca is one of the largest phyla in the animal kingdom that inhabit diverse ecosystems across the planet earth. The innate immunity of mollusk plays a significant role in recognizing and eliminating pathogen as it lacks antibody mediated immunity. Pattern recognition receptors (PRRs) in the cytoplasm of molluscs recognize conserved structures of different pathogen associated molecule patterns (PAMPs) which is vital for pathogen physiology and pathogen fitness. One of the domains in PRRs is lectin which is a carbohydrate binding protein that acts as a defense molecule against pathogens, excludes them out and protects the animal. Mollusc has different types of lectins such as C-type, P-type, F-type, I-type, S-type (Galectins), Ficolins and Chitinase like lectins which have greater applications as therapeutic agent to treat cancer, bacterial, and fungal diseases. Mollusc lectins are involved in host recognition and tissue adhesion and also in drug discovery process. Most of the researchers found that C-type lectins play a key role in immune recognition and defense mechanism.

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Abbreviations

ADEL:

Aplysia dactylomela egg lectin

AK:

Arginine kinase

C3:

Complement component 3

CGL:

Crenomytilus grayanus lectin

CRD:

Carbohydrate recognition domain

CTL:

C-type lectins

DlFBL:

Dicentrarchus labrax fucose binding lectin

FBG:

Fibrinogen like domain

FREPS:

Fibrinogen related proteins

HddSBL:

Haliotis discus discus Sialic acid binding lectin

Ig:

Immunoglobulin

LPS:

Lipopolysaccharide

LRR:

Leucine rich repeat

LTA:

Lipoteichoic acid

M6P:

Mannose-6-phosphate

MAC:

Membrane attack complex

MAN:

Mannan

MCL:

Mytilus californianus lectin

PAMPs:

Pathogen associated molecule patterns

PEPCK:

Phosphoenol pyuruvate carboxy kinase

PGN:

Peptidoglycan

PRRs:

Pattern recognition receptors

SABL:

Sialicacid binding lectins

SR:

Scavenger receptor

TLRs:

Toll like receptors

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Acknowledgments

The authors are thankful to the authorities of Thiagarajar College, Madurai, India for the institutional facilities.

Conflict of Interest

The authors have no conflict of interest to declare.

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© 2022 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

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Chellapackialakshmi, M., Ravi, C. (2022). Investigation on Mollusc Lectins. In: Elumalai, P., Vaseeharan, B., Lakshmi, S. (eds) Aquatic Lectins. Springer, Singapore. https://doi.org/10.1007/978-981-19-0432-5_5

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