National Cancer Institute Thesaurus

Last uploaded: February 21, 2019
Preferred Name

Phosphatidylinositol

ID

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C743

CHEBI_ID

CHEBI:28874

code

C743

DEFINITION

A phosphatidic acid combined with inositol found in biomembranes and a precursor to certain cellular signals. Sometimes referred to as inositide. It is a very important minor phospholipid in eukaryotes, involved in signal transduction processes. Contains myo inositol linked through the 1 hydroxyl group to phosphatidic acid. The 4 phosphate (PIP) and 4, 5 bisphosphate derivatives PIP2) are formed and broken down in membranes by the action of specific kinases and phosphatases (futile cycles). Signal sensitive phospholipase C enzymes remove the inositol moiety, in particular from 1,4,5 trisphosphate (PIP2) as inositol 1,4,5 triphosphate (Ins P3: IP3). Both the diacyl glycerol and products act as second messengers.

FULL_SYN

PI

label

Phosphatidylinositol

Legacy_Concept_Name

Phosphatidylinositol

Preferred_Name

Phosphatidylinositol

prefixIRI

C743

prefLabel

Phosphatidylinositol

Semantic_Type

Organic Chemical

UMLS_CUI

C0031621

subClassOf

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C70561

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http://purl.obolibrary.org/obo/CHEBI_28874 Chemical Entities of Biological Interest Ontology LOOM
http://purl.obolibrary.org/obo/FMA_85436 Foundational Model of Anatomy LOOM
http://purl.bioontology.org/ontology/LNC/MTHU013138 Logical Observation Identifier Names and Codes LOOM
http://purl.bioontology.org/ontology/LNC/LP15799-7 Logical Observation Identifier Names and Codes LOOM