InnateDB: Systems Biology of the Innate Immune Response

Homo sapiens Protein: KIF7

Summary

InnateDB Protein

IDBP-241652.6

Last Modified

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

Gene Symbol

KIF7

Protein Name

kinesin family member 7

Synonyms

Species

Homo sapiens

Ensembl Protein

ENSP00000377934

InnateDB Gene

IDBG-29449 (KIF7)

Protein Structure

UniProt Annotation

Function

Essential for hedgehog signaling regulation: acts as both a negative and positive regulator of sonic hedgehog (Shh) and Indian hedgehog (Ihh) pathways, acting downstream of SMO, through both SUFU-dependent and -independent mechanisms (PubMed:21633164). Involved in the regulation of microtubular dynamics. Required for proper organization of the ciliary tip and control of ciliary localization of SUFU-GLI2 complexes (By similarity). Required for localization of GLI3 to cilia in response to Shh. Negatively regulates Shh signaling by preventing inappropriate activation of the transcriptional activator GLI2 in the absence of ligand. Positively regulates Shh signaling by preventing the processing of the transcription factor GLI3 into its repressor form. In keratinocytes, promotes the dissociation of SUFU-GLI2 complexes, GLI2 nuclear translocation and Shh signaling activation (By similarity). Involved in the regulation of epidermal differentiation and chondrocyte development (By similarity). {ECO:0000250, ECO:0000269PubMed:21633164}.

Subcellular Localization

Cell projection, cilium {ECO:0000269PubMed:19592253}. Note=Localizes to the cilium tip.

Disease Associations

Note=Ciliary dysfunction leads to a broad spectrum of disorders, collectively termed ciliopathies. The ciliopathy range of diseases includes Meckel-Gruber syndrome, Bardet-Biedl syndrome, Joubert syndrome, and hydrolethalus syndrome among others. Single-locus allelism is insufficient to explain the variable penetrance and expressivity of such disorders, leading to the suggestion that variations across multiple sites of the ciliary proteome influence the clinical outcome. Primary ciliopathy loci can be modulated by pathogenic lesions in other ciliary genes to either exacerbate overall severity or induce specific endophenotypes. KIF7 may be causally associated with diverse ciliopathies, and also acts as a modifier gene across the ciliopathy spectrum.Bardet-Biedl syndrome (BBS) [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:21552264}. Note=The gene represented in this entry may act as a disease modifier. Heterozygous missense mutations in KIF7 may genetically interact with other BBS genes and contribute to disease manifestation and severity.Hydrolethalus syndrome 2 (HLS2) [MIM:614120]: An embryonic lethal disorder characterized by hydrocephaly or anencephaly, postaxial polydactyly of the upper limbs, and pre- or postaxial polydactyly of the lower limbs. Duplication of the hallux is a common finding. {ECO:0000269PubMed:21552264}. Note=The disease is caused by mutations affecting the gene represented in this entry.Acrocallosal syndrome (ACLS) [MIM:200990]: A syndrome characterized by hypogenesis or agenesis of the corpus callosum. Clinical features include postaxial polydactyly, hallux duplication, macrocephaly, craniofacial abnormalities, severe developmental delay and mental retardation. {ECO:0000269PubMed:21552264, ECO:0000269PubMed:23125460}. Note=The disease is caused by mutations affecting the gene represented in this entry.Joubert syndrome 12 (JBTS12) [MIM:200990]: A disorder presenting with cerebellar ataxia, oculomotor apraxia, hypotonia, neonatal breathing abnormalities and psychomotor delay. Neuroradiologically, it is characterized by cerebellar vermian hypoplasia/aplasia, thickened and reoriented superior cerebellar peduncles, and an abnormally large interpeduncular fossa, giving the appearance of a molar tooth on transaxial slices (molar tooth sign). Additional variable features include retinal dystrophy and renal disease. {ECO:0000269PubMed:21633164}. Note=The disease is caused by mutations affecting the gene represented in this entry.Pallister-Hall syndrome 1 (PHS1) [MIM:146510]: An autosomal dominant disorder characterized by a wide range of clinical manifestations. Clinical features include hypothalamic hamartoma, pituitary dysfunction, central or postaxial polydactyly, and syndactyly. Malformations are frequent in the viscera, e.g. anal atresia, bifid uvula, congenital heart malformations, pulmonary or renal dysplasia. {ECO:0000269PubMed:21552264}. Note=The gene represented in this entry may be involved in disease pathogenesis.

Tissue Specificity

Embryonic stem cells, melanotic melanoma and Jurkat T-cells. Expressed in heart, lung, liver, kidney, testis, retina, placenta, pancreas, colon, small intestin, prostate and thymus. {ECO:0000269PubMed:21633164}.

Comments

Interactions

Number of Interactions

This gene and/or its encoded proteins are associated with 5 experimentally validated interaction(s) in this database.

Experimentally validated
Total	5 [view]
Protein-Protein	5 [view]
Protein-DNA	0
Protein-RNA	0
DNA-DNA	0
RNA-RNA	0
DNA-RNA	0

Gene Ontology

Molecular Function

Accession	GO Term
GO:0003777	microtubule motor activity
GO:0005515	protein binding
GO:0005524	ATP binding
GO:0008017	microtubule binding

Biological Process

GO:0007018	microtubule-based movement
GO:0008152	metabolic process
GO:0045879	negative regulation of smoothened signaling pathway
GO:0045880	positive regulation of smoothened signaling pathway