InnateDB: Systems Biology of the Innate Immune Response

Homo sapiens Protein: BBS5

Summary

InnateDB Protein

IDBP-245203.7

Last Modified

2014-10-13 [Report errors or provide feedback]

Gene Symbol

BBS5

Protein Name

Bardet-Biedl syndrome 5

Synonyms

Species

Homo sapiens

Ensembl Protein

ENSP00000376431

InnateDB Gene

IDBG-74468 (BBS5)

Protein Structure

UniProt Annotation

Function

The BBSome complex is thought to function as a coat complex required for sorting of specific membrane proteins to the primary cilia. The BBSome complex is required for ciliogenesis but is dispensable for centriolar satellite function. This ciliogenic function is mediated in part by the Rab8 GDP/GTP exchange factor, which localizes to the basal body and contacts the BBSome. Rab8(GTP) enters the primary cilium and promotes extension of the ciliary membrane. Firstly the BBSome associates with the ciliary membrane and binds to RAB3IP/Rabin8, the guanosyl exchange factor (GEF) for Rab8 and then the Rab8-GTP localizes to the cilium and promotes docking and fusion of carrier vesicles to the base of the ciliary membrane. The BBSome complex, together with the LTZL1, controls SMO ciliary trafficking and contributes to the sonic hedgehog (SHH) pathway regulation. Required for BBSome complex ciliary localization but not for the proper complex assembly. {ECO:0000269PubMed:17574030, ECO:0000269PubMed:22072986}.

Subcellular Localization

Cell projection, cilium membrane. Cytoplasm. Cytoplasm, cytoskeleton, cilium basal body {ECO:0000250}. Cytoplasm, cytoskeleton, microtubule organizing center, centrosome, centriolar satellite. Note=Localizes to basal bodies. {ECO:0000250}.

Disease Associations

Bardet-Biedl syndrome 5 (BBS5) [MIM:209900]: A syndrome characterized by usually severe pigmentary retinopathy, early- onset obesity, polydactyly, hypogenitalism, renal malformation and mental retardation. Secondary features include diabetes mellitus, hypertension and congenital heart disease. Bardet-Biedl syndrome inheritance is autosomal recessive, but three mutated alleles (two at one locus, and a third at a second locus) may be required for clinical manifestation of some forms of the disease. {ECO:0000269PubMed:15137946, ECO:0000269PubMed:21344540}. Note=The disease is caused by mutations affecting the gene represented in this entry.

Tissue Specificity

Comments

Interactions

Number of Interactions

This gene and/or its encoded proteins are associated with 11 experimentally validated interaction(s) in this database.

Experimentally validated
Total	11 [view]
Protein-Protein	11 [view]
Protein-DNA	0
Protein-RNA	0
DNA-DNA	0
RNA-RNA	0
DNA-RNA	0

Gene Ontology

Molecular Function

Accession	GO Term
GO:0001103	RNA polymerase II repressing transcription factor binding
GO:0005515	protein binding
GO:0032266	phosphatidylinositol-3-phosphate binding

Biological Process

GO:0001947	heart looping
GO:0007601	visual perception
GO:0015031	protein transport
GO:0032402	melanosome transport
GO:0042384	cilium assembly
GO:0044458	motile cilium assembly
GO:0050896	response to stimulus