| ziphioid | <zoology> See Xiphioid. Source: Websters Dictionary (01 Mar 1998) |
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| zipper | <molecular biology> Motif found in certain DNA binding proteins. In a region of approximately 35 amino acids, every seventh is a leucine. This facilitates dimerisation of two such proteins to form a functional transcription factor. Examples of proteins containing leucine zippers are products of the proto-oncogenes myc, fos and jun. (15 Oct 1997) |
| zipper protein kinase | <enzyme> A putative serine/threonine protein kinase of 859 amino acids; has a leucine-zipper domain; has been sequenced; genbank u07358 Registry number: EC 2.7.10.- Synonym: zpk protein, leucine-zipper protein kinase (26 Jun 1999) |
| zippering | <cell biology> Process suggested to occur in phagocytosis in which the membrane of the phagocyte covers the particle by a progressive adhesive interaction. The evidence for such a mechanism comes from experiments in which capped B-cells are only partially internalised, whereas those with a uniform opsonising coat of antiIgG are fully engulfed. (18 Nov 1997) |