65983107022ENSG00000155324ENSMUSG00000001700Q96HH9Q6PEM6NM_001349541NM_001349542NM_001349543NM_001349544NM_026240NM_001360917NP_001336470NP_001336471NP_001336472NP_001336473NP_080516NP_001347846GRAM domain-containing 2B protein (GRAMD2B; formerly GRAMD3), also known as NS3TP2 and HCV NS3-transactivated protein 2 is a protein encoded by the GRAMD2B gene.

These proteins are mammalian representatives of the yeast lipid transfer proteins anchored at a membrane contact site (LAM) family.

[7] GRAMD2B consists of a GRAM domain and a transmembrane domain anchoring it to the endoplasmic reticulum.

[8][7] Similar to GRAMD2A, GRAMD2B lacks the VASt domain found in LAM and GRAMD1 proteins.

Its function has not yet been defined, but is likely similar to that of GRAMD2A.