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zona pellucida

^ http://purl.obolibrary.org/obo/UBERON_0000086

A glycoprotein membrane surrounding the plasma membrane of an oocyte. It is a vital constitutive part of the latter, external but not extraneous to it. The zona pellucida first appears in multilaminar primary oocytes. [ http://en.wikipedia.org/wiki/Zona_pellucida ]

Term info

database cross reference
Subsets

pheno_slim, vertebrate_core, human_reference_atlas

UBPROP 0000003

Outside the plasma membrane, three envelopes surround the ovum. The first, the primary egg envelope, lies between the plasma membrane and the surrounding cells of the ovary. The most consistent component of this primary layer is the vitelline membrane, a transparent jacket of fibrous protein. In mammals, the homologous structure is called the zona pellucida.[well established][VHOG]

depicted by

http://upload.wikimedia.org/wikipedia/commons/8/81/Gray3.png

has related synonym

zona radiata, vitelline envelope, vitelline membrane, pellucid zone, zona striata, oolemma, striated membrane

has broad synonym

zona pellucida - vitelline membrane

id

UBERON:0000086

prefLabel

Zona pellucida

present in taxon

http://purl.obolibrary.org/obo/NCBITaxon_9606