<p>Ependymins are secretory proteins found predominantly in the cerebrospinal fluid of teleost fish [<cite idref="PUB00000027"/>, <cite idref="PUB00003426"/>]. A bound form of the glycoproteins is associated with the extracellular matrix, probably with collagen fibrils, that may be the functional form of ependymins [<cite idref="PUB00002045"/>]. The proteins bind calcium via N-linked sialic acid residues. The molecular function of ependymins appear to be related to cell contactphenomena involving the extracellular matrix [<cite idref="PUB00002045"/>].</p>