<Ul> <Li> Integral polytopic proteins , also known as `` transmembrane proteins '' , are integral membrane proteins that span across the membrane at least once . These proteins may have different transmembrane topology . These proteins have one of two structural architectures : <Ul> <Li> helix bundle proteins , which are present in all types of biological membranes ; </Li> <Li> beta barrel proteins , which are found only in outer membranes of Gram - negative bacteria , and outer membranes of mitochondria and chloroplasts . </Li> </Ul> </Li> <Li> Integral monotopic proteins are integral membrane proteins that are attached to only one side of the membrane and do not span the whole way across . </Li> </Ul>
<Ul> <Li> Integral polytopic proteins , also known as `` transmembrane proteins '' , are integral membrane proteins that span across the membrane at least once . These proteins may have different transmembrane topology . These proteins have one of two structural architectures : <Ul> <Li> helix bundle proteins , which are present in all types of biological membranes ; </Li> <Li> beta barrel proteins , which are found only in outer membranes of Gram - negative bacteria , and outer membranes of mitochondria and chloroplasts . </Li> </Ul> </Li> <Li> Integral monotopic proteins are integral membrane proteins that are attached to only one side of the membrane and do not span the whole way across . </Li> </Ul>
what are the different classes of membrane proteins
what are the different classes of membrane proteins
Integral polytopic proteins Integral monotopic proteins
Integral polytopic proteins Integral monotopic proteins