ribosome

The Planarian Anatomoy Ontology (PLANA) is a collection of terms curated from the literature and other organism anatomy ontologies to describe anatomical features, life cycle stages and developmental processes in the regenerative flatworm Schmidtea mediterranea. The latest version of the PLANA Ontology is available through the Open Biological and Biomedical Ontology Foundry (OBO) . PLANA Ontology terms are searchable at the EMBL-EBI Ontology Lookup Service (OLS) and the PLANA Ontology Terms Page.

The Overview Section is populated with infomration from the OLS.




Planarian Anatomy Ontology Term Overview


NAME:

  ribosome


DEFINITON:

  An intracellular organelle, about 200 A in diameter, consisting of RNA and protein. It is the site of protein biosynthesis resulting from translation of messenger RNA (mRNA). It consists of two subunits, one large and one small, each containing only protein and RNA. Both the ribosome and its subunits are characterized by their sedimentation coefficients, expressed in Svedberg units (symbol: S). Hence, the prokaryotic ribosome (70S) comprises a large (50S) subunit and a small (30S) subunit, while the eukaryotic ribosome (80S) comprises a large (60S) subunit and a small (40S) subunit. Two sites on the ribosomal large subunit are involved in translation, namely the aminoacyl site (A site) and peptidyl site (P site). Ribosomes from prokaryotes, eukaryotes, mitochondria, and chloroplasts have characteristically distinct ribosomal proteins.


TERM CITATIONS:

  

TERM ID:

  PLANA:0000537


ABOUT THIS TERM:

  ribosome "is a" intracellular non-membrane-bounded organelle and non-membrane-bounded organelle


BROWSE ONTOLOGY TREE (IN OLS):

Click on the '-' and '+' to collapse and expand term 'is a' and 'part of' relationships.


Planarian Anatomy Ontology


EXPLORE ONTOLOGY GRAPH:


Dynamically explore this term by selecting additional relationships to display ( checkboxes on the right ) and by expanding nodes by double clicking on a node. Single click on a node to display the definition below.