Glycoproteins

... organ transplants because of the foreign DNA, but instead it recognizes foreign structures on the cell surface - which are mostly proteins or glycoproteins.

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Just wanted to add that proteins incorporate many sugars for signaling purposes: either glycoproteins or proteoglycans. For example: Secretory vesicles in the Golgi cisterna use mostly mannose, galactose, and NAG (N-Acetlyglucosamine) to make the necessary glycoproteins ...

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... is a plant, a fungus or a bacterium - plant cell walls mostly contain cellulose, fungi have chitine and bacteria can have e.g. peptidoglygan or glycoproteins. Nucleus: nucleus contains the nuclear envelope, as well as the nucleic acids inside it. There are also proteins present, some (such as ...

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... 2. Enzyme proteins (Integral and peripheral) 3. Signal transduction proteins (hormone reception, coat proteins?) 4. Cell recognition (Here's your glycoproteins) 5. Intercellular joining (Your junction proteins) 6. Attachment to the Extracellular matrix and cytoskeleton. (All your stabilizing proteins, ...

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... five proteins throughout the cell membrane: 1. carrier proteins- bind w/ molecules and carry them across the cell membrane (in/out of membrane) 2.glycoproteins- have sugars attached to them 3.channel proteins- allow molecules to pass freely through membrane 4.receptor proteins- bind w/ proteins ...

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