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- Table of Contents
Facts about IQ calmodulin-binding motif-containing protein 1.
Involved in ciliogenesis.
The function in an early step in cilia formation is dependent upon its association with CEP290/NPHP6 (PubMed:21565611, PubMed:23446637).Involved in regulation of the BBSome complex integrity, especially for existence of BBS2 and BBS5 in the complex, and in ciliary targeting of selected BBSome cargos. May play a role in controlling entry of the BBSome complex to cilia possibly implicating CEP290/NPHP6 (PubMed:25552655).
| Human | |
|---|---|
| Gene Name: | IQCB1 |
| Uniprot: | Q15051 |
| Entrez: | 9657 |

| Belongs to: |
|---|
| No superfamily |

IQ calmodulin-binding motif containing 1; IQ motif containing B1; KIAA0036nephrocystin 5; Nephrocystin-5; NPHP5IQ calmodulin-binding motif-containing protein 1; p53 and DNA damage-regulated IQ motif protein; PIQ; SLSN5
Mass (kDA):
68.929 kDA

| Human | |
|---|---|
| Location: | 3q13.33|3q21.1 |
| Sequence: | 3; NC_000003.12 (121769761..121835079, complement) |
Ubiquitously expressed in fetal and adult tissues. Localized to the outer segments and connecting cilia of photoreceptor cells. Up-regulated in a number of primary colorectal and gastric tumors.
Cytoplasm, cytoskeleton, microtubule organizing center, centrosome. Cytoplasm, cytoskeleton, microtubule organizing center, centrosome, centriole. Localization to the centrosome depends on the interaction with CEP290/NPHP6.





PMID: 16322217 by Luo X., et al. Cloning and characterization of a p53 and DNA damage down-regulated gene PIQ that codes for a novel calmodulin-binding IQ motif protein and is up-regulated in gastrointestinal cancers.
PMID: 15723066 by Otto E.A., et al. Nephrocystin-5, a ciliary IQ domain protein, is mutated in Senior- Loken syndrome and interacts with RPGR and calmodulin.