Recombinant Human Oxysterol-binding protein-related protein 5 (OSBPL5), Truncated

Uniprot Id

Q9H0X9

Target Species

Human

Target Name

OSBPL5

Target Full Name

Oxysterol-binding protein-related protein 5

Target Function

Lipid transporter involved in lipid countertransport between the endoplasmic reticulum and the plasma membrane: specifically exchanges phosphatidylserine with phosphatidylinositol 4-phosphate (PI4P), delivering phosphatidylserine to the plasma membrane in exchange for PI4P, which is degraded by the SAC1/SACM1L phosphatase in the endoplasmic reticulum. Binds phosphatidylserine and PI4P in a mutually exclusive manner. May cooperate with NPC1 to mediate the exit of cholesterol from endosomes/lysosomes. Binds 25-hydroxycholesterol and cholesterol.

Target Subcellular Location

Endoplasmic reticulum membrane; Single-pass membrane protein.

Target Protein Families

OSBP family

Target Tissue Specificity

Ubiquitously expressed.

Target Synonyms

OSBPL5; KIAA1534; OBPH1; ORP5; Oxysterol-binding protein-related protein 5; ORP-5; OSBP-related protein 5; Oxysterol-binding protein homolog 1

Target Background

This gene encodes a member of the oxysterol-binding protein (OSBP) family, a group of intracellular lipid receptors that play a key role in the maintenance of cholesterol balance in the body. Most members contain an N-terminal pleckstrin homology domain and a highly conserved C-terminal OSBP-like sterol-binding domain. This gene has been shown to be imprinted, with preferential expression from the maternal allele only in placenta. Transcript variants encoding different isoforms have been identified.