Signal recognition particle receptor (SRPR) is associated with the endoplasmic reticulum.  SRPR is a receptor for the signal recognition particle (SRP).  SRPR is a heterodimer with α and β subunits which contain a GTP-binding domain.  SRPR α subunit binds to SRP54 subunit of SRP complex.  SRPR β subunit is a transmembrane GTPase.  The bacterial SRPR is called FtsY.
See also Intracellular receptors
- . Water molecules are shown as red spheres.
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 3D structures of signal recognition particle receptor
Signal recognition particle receptor 3D structures