Tbio ABCG8 ATP-binding cassette sub-family G member 8

Protein Summary

Description

ABCG5 and ABCG8 form an obligate heterodimer that mediates Mg(2+)- and ATP-dependent sterol transport across the cell membrane. Plays an essential role in the selective transport of the dietary cholesterol in and out of the enterocytes and in the selective sterol excretion by the liver into bile (PubMed:11099417, PubMed:11452359, PubMed:27144356, PubMed:15054092). Required for normal sterol homeostasis (PubMed:11099417, PubMed:11452359, PubMed:15054092). The heterodimer with ABCG5 has ATPase activity (PubMed:16893193, PubMed:20210363, PubMed:27144356). The protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. ABC proteins transport various molecules across extra- and intra-cellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). This protein is a member of the White subfamily. The protein encoded by this gene functions to exclude non-cholesterol sterol entry at the intestinal level, promote excretion of cholesterol and sterols into bile, and to facilitate transport of sterols back into the intestinal lumen. It is expressed in a tissue-specific manner in the liver, intestine, and gallbladder. This gene is tandemly arrayed on chromosome 2, in a head-to-head orientation with family member ABCG5. Mutations in this gene may contribute to sterol accumulation and atherosclerosis, and have been observed in patients with sitosterolemia. [provided by RefSeq, Jul 2008]

Uniprot Accession IDs

• Q9H221
• Q53QN8

Gene Name

• ABCG8

Ensembl ID

• ENST00000272286
• ENSP00000272286
• ENSG00000143921
• ENST00000645013
• ENSP00000496450

Symbol

• GBD4
• STSL

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
molecular function	0.98
trait	0.75
biological term	0.68
cell line	0.67
disease	0.67

Protein Classes

PANTHER Classes

Protein / Transporter / Atp-binding Cassette (Abc) Transporter / Atp-binding Cassette Sub-family G Member 8

DTO Classes

Protein / Transporter / Atp-binding Cassette Transporter Family / Abcg Subfamily / Atp-binding Cassette Sub-family G Member 8

IDG Development Level Summary

Tdark

These are targets about which virtually nothing is known. They do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 244.32   (req: < 5)

Gene RIFs: 100   (req: <= 3)

Antibodies: 290   (req: <= 50)

Tbio

These targets do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 244.32   (req: >= 5)

Gene RIFs: 100   (req: > 3)

Antibodies: 290   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 15

Tchem

Target has at least one ChEMBL compound with an activity cutoff of < 30 nM - AND - satisfies the preceding conditions

Active Ligand: 0

Tclin

Target has at least one approved drug - AND - satisfies the preceding conditions

Active Drug: 0