Zebrafish class 1 phosphatidylinositol transfer proteins: PITPbeta and double cone cell outer segment integrity in retina.
Zebrafish class 1 phosphatidylinositol transfer proteins: PITPbeta and double cone cell outer segment integrity in retina.
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DOI:
10.1111/j.1600-0854.2010.01085.x
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发表时间:
2010-09
期刊:
影响因子:
--
通讯作者:
Bankaitis VA
中科院分区:
文献类型:
--
作者:
Ile KE;Kassen S;Cao C;Vihtehlic T;Shah SD;Mousley CJ;Alb JG Jr;Huijbregts RP;Stearns GW;Brockerhoff SE;Hyde DR;Bankaitis VA
Phosphatidylinositol transfer proteins (PITPs) in yeast coordinate lipid metabolism with the activities of specific membrane trafficking pathways. The structurally unrelated metazoan-specific PITPs (mPITPs), on the other hand, are an under-investigated class of proteins. It remains unclear what biological activities mPITPs discharge, and the mechanisms by which these proteins function are also not understood. The soluble class 1 mPITPs include the PITPα and PITPβ isoforms. Of these, the β-isoforms are particularly poorly characterized. Herein, we report the use of zebrafish as a model vertebrate for the study of class 1 mPITP biological function. Zebrafish express PITPα and PITPβ-isoforms (Pitpna and Pitpnb, respectively) and a novel PITPβ-like isoform (Pitpng). Pitpnb expression is particularly robust in double cone cells of the zebrafish retina. Morpholino-mediated protein knockdown experiments demonstrate Pitpnb activity is primarily required for biogenesis/maintenance of the double cone photoreceptor cell outer segments in the developing retina. By contrast, Pitpna activity is essential for successful navigation of early developmental programs. This study reports the initial description of the zebrafish class 1 mPITP family, and the first analysis of PITPβ function in a vertebrate.
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影响因子:
6.5
作者:
Alb, James G., Jr.;Phillips, Scott E.;Bankaitis, Vytas A.
通讯作者:
Bankaitis, Vytas A.
影响因子:
7.8
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McGee, T P;Skinner, H B;Whitters, E A;Henry, S A;Bankaitis, V A
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Bankaitis, V A
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4.1
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通讯作者:
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影响因子:
64.5
作者:
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通讯作者:
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