Culianez-Macia FA et al. 1993
- Authors:
Culianez-Macia FA. Martin C.
- Title:
DIP: a member of the MIP family of membrane proteins that is expressed in
mature seeds and dark-grown seedlings of Antirrhinum majus.
- Reference location:
Plant Journal. 4(4):717-25, 1993 Oct.
- Abstract:
DiP, a gene from Antirrhinum majus, which encodes a protein with striking
homology to other integral membrane proteins, was cloned. The gene was
specifically expressed in mature seeds and during seedling germination,
particularly in cotyledons of seedlings grown in the dark. The deduced
product, called DiP, for dark intrinsic protein, shows strong homology
with the MIP family of channel transporters which include; the bovine
major intrinsic protein (MIP), the Escherichia coli glycerol facilitator
(GIpF), the peribacteroid nodulin-26 (Nod26), and the tonoplast protein
from kidney bean (TIP). DiP is most similar to other plant members of this
family, and in particular to the tobacco protein TobRB7 which is expressed
specifically in roots. However, the expression pattern of diP suggests
that its product is functionally more similar to the tonoplast intrinsic
protein from kidney bean since it is most highly expressed in the
cotyledons of germinating seedlings, before the cells undergo expansion
growth and become photosynthetic.
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