Page last updated: 2024-10-24

9+0 non-motile cilium

Definition

Target type: cellularcomponent

A non-motile cilium where the axoneme has a ring of nine outer microtubule doublets but no central microtubules (and is therefore called a 9+0 axoneme). [GOC:cilia, PMID:22118931]

The 9+0 non-motile cilium is a microtubule-based organelle found in a variety of eukaryotic cells. It is characterized by its unique structural arrangement, consisting of nine outer microtubule doublets, each composed of an A and B tubule, but lacking the central pair of microtubules present in motile cilia. The absence of the central pair is the defining feature of the 9+0 arrangement, and it is believed to contribute to the non-motile nature of these cilia.

The microtubules of the 9+0 non-motile cilium are anchored to the cell's cytoskeleton via a structure called the basal body. The basal body is a modified centriole that acts as the organizing center for cilium assembly. The microtubules extend outward from the basal body and are arranged in a ring-like structure, creating the characteristic 9+0 configuration.

The 9+0 non-motile cilium is often associated with sensory functions. It is involved in the detection of various stimuli, including light, chemicals, and mechanical forces. These cilia are also thought to play a role in cell signaling and communication.

The cellular component of a 9+0 non-motile cilium includes:

* **Microtubule Doublets:** The nine microtubule doublets are the core structural components of the cilium.
* **Basal Body:** The basal body serves as the anchoring point and organizing center for the microtubules.
* **Ciliary Membrane:** The membrane that encloses the cilium, separating it from the surrounding cytoplasm.
* **Axoneme:** The microtubule-based core structure of the cilium.
* **Intraflagellar Transport (IFT) Machinery:** A complex of proteins responsible for the transport of materials within the cilium, essential for its assembly, maintenance, and function.
* **Sensory Proteins:** Specialized proteins embedded in the ciliary membrane or associated with the microtubules, involved in detecting stimuli and initiating signaling cascades.

The specific composition and function of the 9+0 non-motile cilium can vary depending on the cell type and its role in the organism.'
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Proteins (1)

ProteinDefinitionTaxonomy
Smoothened homologA protein smoothened that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q99835]Homo sapiens (human)

Compounds (15)

CompoundDefinitionClassesRoles
cyclopaminepiperidinesglioma-associated oncogene inhibitor
pd 173955PD 173955: inhibits src family-selective tyrosine kinase; structure in first sourcearyl sulfide;
dichlorobenzene;
methyl sulfide;
pyridopyrimidine
tyrosine kinase inhibitor
purmorphaminepurmorphamine : A member of the class of purines that is purine substituted at C-2 by a 1-naphthyloxy group, at C-4 by a 4-morpholinophenylamino group, and at N-9 by a cyclohexyl group.

purmorphamine: structure in first source
aromatic ether;
morpholines;
purines;
secondary amino compound
osteogenesis regulator;
SMO receptor agonist
cur 61414CUR 61414: inhibits the hedehog signaling pathway; structure in first source
abt 869aromatic amine;
indazoles;
phenylureas
angiogenesis inhibitor;
antineoplastic agent;
EC 2.7.10.1 (receptor protein-tyrosine kinase) inhibitor
lde225sonidegib : A member of the classo of biphenyls that is the amide obtained by formal condensation of the carboxy group of 2-methyl-4'-(trifluoromethoxy)[1,1'-biphenyl]-3-carboxylic acid with the amino group of 6-(2,6-dimethylmorpholin-4-yl)pyridin-3-amine. Used (as its phosphate salt) for treatment of locally advanced basal cell carcinoma.

sonidegib: specific Smoothened/Smo antagonist
aminopyridine;
aromatic ether;
benzamides;
biphenyls;
morpholines;
organofluorine compound;
tertiary amino compound
antineoplastic agent;
Hedgehog signaling pathway inhibitor;
SMO receptor antagonist
gdc 0449HhAntag691: inhibits the hedgehog pathway and ABC transporters; has antineoplastic activitybenzamides;
monochlorobenzenes;
pyridines;
sulfone
antineoplastic agent;
Hedgehog signaling pathway inhibitor;
SMO receptor antagonist;
teratogenic agent
N-[[3-fluoro-4-[[2-(1-methyl-4-imidazolyl)-7-thieno[3,2-b]pyridinyl]oxy]anilino]-sulfanylidenemethyl]-2-phenylacetamidethioureas
ipi-926IPI-926: a semisynthetic derivative of cyclopamine that is a smoothened inhibitor with antineoplastic activity; structure in first sourcepiperidines
gsk 1363089GSK 1363089: a multikinase inhibitor that acts on Met, RON, Axl, and VEGFR; structure in first sourcearomatic ether
tak-441TAK-441: structure in first source
ly2940680
3-(2,6-dichloro-3,5-dimethoxyphenyl)-1-(6-(4-(4-ethylpiperazin-1-yl)-phenylamino)pyrimidin-4-yl)-1-methylureaBGJ-398 : A member of the class of phenylureas that is urea in which a hydrogen attached to one of the nitrogens is replaced by a 2,6-dichloro-3,5-dimethoxyphenyl group, while the hydrogens attached to the other nitrogen are replaced by a methyl group and a 6-{[4-(4-ethylpiperazin-1-yl)phenyl]amino}pyrimidin-4-yl group. It is a potent and selective fibroblast growth factor receptor inhibitor.

infigratinib: structure in first source
aminopyrimidine;
dichlorobenzene;
N-alkylpiperazine;
N-arylpiperazine;
phenylureas
antineoplastic agent;
fibroblast growth factor receptor antagonist
cep-32496agerafenib: inhibitor of RAF family kinases; structure in first source
pf-52748571-(4-(5'-chloro-3,5-dimethyl-2,4'-bipyridin-2'-yl)piperazin-1-yl)-3-(methylsulfonyl)propan-1-one: a potent and selective Smoothened antagonist that penetrates the blood-brain barrier; structure in first source