Term: head Cajal body
Note: This page represents a term created by the combination ("post-composition") of two ontology terms. For more information on the individual terms, click the hyperlinked name.
Name: head
Synonyms:
Definition: Organism subdivision which is the part of the body which consists of the cranial and pharyngeal regions.
Ontology: Anatomy Ontology [ZFA:0001114]
Name: Cajal body
Synonyms: coiled body, Gemini of coiled bodies, Gems
Definition: A class of nuclear body, first seen after silver staining by Ramon y Cajal in 1903, enriched in small nuclear ribonucleoproteins, and certain general RNA polymerase II transcription factors; ultrastructurally, they appear as a tangle of coiled, electron-dense threads roughly 0.5 micrometers in diameter; involved in aspects of snRNP biogenesis; the protein coilin serves as a marker for Cajal bodies. Some argue that Cajal bodies are the sites for preassembly of transcriptosomes, unitary particles involved in transcription and processing of RNA.
Ontology: GO: Cellular Component [GO:0015030]    QuickGO    AmiGO