The function of NOSTRIN (nitric oxide synthase trafficking, ENSG00000163072) is as follows. Multivalent adapter protein which may decrease NOS3 activity by inducing its translocation away from the plasma membrane. {ECO:0000269|PubMed:12446846, ECO:0000269|PubMed:16234328, ECO:0000269|PubMed:16807357}.