Recombinant Human Hepatitis B virus X-interacting protein (HBXIP)

Uniprot Id

O43504

Target Species

Human

Target Name

LAMTOR5

Target Full Name

Ragulator complex protein LAMTOR5

Target Function

As part of the Ragulator complex it is involved in amino acid sensing and activation of mTORC1, a signaling complex promoting cell growth in response to growth factors, energy levels, and amino acids. Activated by amino acids through a mechanism involving the lysosomal V-ATPase, the Ragulator functions as a guanine nucleotide exchange factor activating the small GTPases Rag. Activated Ragulator and Rag GTPases function as a scaffold recruiting mTORC1 to lysosomes where it is in turn activated. When complexed to BIRC5, interferes with apoptosome assembly, preventing recruitment of pro-caspase-9 to oligomerized APAF1, thereby selectively suppressing apoptosis initiated via the mitochondrial/cytochrome c pathway. Down-regulates hepatitis B virus (HBV) replication.

Target Subcellular Location

Lysosome. Cytoplasm, cytosol.

Target Protein Families

LAMTOR5 family

Target Tissue Specificity

Highly expressed in skeletal and cardiac muscle, followed by pancreas, kidney, liver, brain, placenta and lung. Elevated levels in both cancerous and non-cancerous liver tissue of patients with chronic HBV infection compared with hepatic tissue without HB

Target Research Area

Cell Biology

Target Synonyms

HBV X interacting protein ; HBV X-interacting protein; HBX interacting protein; HBX-interacting protein; hbxip; HBXIP_HUMAN; Hepatitis B virus X interacting protein; Hepatitis B virus X-interacting protein; LAMTOR5; Late endosomal/lysosomal adaptor MAPK and MTOR activator 5; MGC71071; Ragulator complex protein LAMTOR5; XIP

Target Background

This gene encodes a protein that specifically complexes with the C-terminus of hepatitis B virus X protein (HBx). The function of this protein is to negatively regulate HBx activity and thus to alter the replication life cycle of the virus.