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The molecule laminarin (also known as laminaran) is a storage glucan (a polysaccharide of glucose) found in brown algae. It is used as a carbohydrate food reserve in the same way that chrysolaminarin is used by phytoplankton, especially in diatoms. [1] It is created by photosynthesis and is made up of β(1→3)-glucan with β(1→6)-branches.
In humans, fifteen laminin trimers have been identified. The laminins are combinations of different alpha-, beta-, and gamma-chains. [6]Five alpha-chain isoforms: LAMA1, LAMA2, LAMA3 (which has three splice forms), LAMA4, LAMA5
The carbon storage system of brown algae is unusual, involving the accumulation of reserves of mannitol and the β-1,3-glucan laminarin rather than α-1,4-glucans such as starch or glycogen. [4] The mannitol pathway was probably most likely a speciation event in the brown algal lineage via a horizontal transfer event from actinobacteria , along ...
Chrysolaminarin is a storage polysaccharide typically found in photosynthetic heterokonts.It is used as a carbohydrate food reserve by phytoplankton such as Bacillariophyta (similar to the use of laminarin by brown algae).
Floridean starch consists of a polymer of glucose molecules connected primarily by α(1,4) linkages, with occasional branch points using α(1,6) linkages. It differs from other common α-linked glucose polymers in the frequency and position of the branches, which gives rise to different physical properties.
Laminaria digitata. Laminaria digitata is a tough, leathery, dark brown seaweed that grows to 2 or 3 metres (6 + 1 ⁄ 2 or 10 ft) long. The holdfast which anchors it to the rock is conical and has a number of spreading root-like protrusions called rhizoids.
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Glucans serve a diverse set of functions. Within the cell, certain glucans store energy, fortify cellular structure, behave in recognition, and enhance virulence in pathogenic organisms.