What is the Nature of Peripheral Membrane Proteins?

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Peripheral proteins can be either temporarily or more permanently associated with the cell membrane. While some sources suggest that these proteins are loosely connected, indicating a transient relationship with the membrane, others clarify that certain peripheral proteins can have a more stable attachment. This distinction highlights the variability in the interactions of peripheral proteins with the membrane, leading to potential confusion regarding their classification.
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Hello,

I've a book in cell biology (it's an advanced book not a crash course or something) where's written that peripheral proteins are loosely connected to the membrane. However in most sources on the internet it's written that the protein is temporally adhered to the membrane.

I'm a bit confused? Does it temporally adhered or is it constantly there ?

Thank you
 
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Some are temporarily bound to the membrane and some are more permanently attached.
 
Thank you
 
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