A role for myosin-1A in the localization of a brush border disaccharidase.
A role for myosin-1A in the localization of a brush border disaccharidase.
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DOI:
10.1083/jcb.200310031
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发表时间:
2004-05-10
期刊:
影响因子:
--
通讯作者:
Mooseker MS
中科院分区:
文献类型:
--
作者:
Tyska MJ;Mooseker MS
To gain insight regarding myosin-1A (M1A) function, we expressed a dominant negative fragment of this motor in the intestinal epithelial cell line, CACO-2BBE. Sucrase isomaltase (SI), a transmembrane disaccharidase found in microvillar lipid rafts, was missing from the brush border (BB) in cells expressing this fragment. Density gradient centrifugation, affinity purification, and immunopurification of detergent-resistant membranes isolated from CACO-2BBE cells and rat microvilli (MV) all indicate that M1A and SI reside on the same population of low density (∼1.12 g/ml) membranes. Chemical cross-linking of detergent-resistant membranes from rat MV indicates that SI and M1A may interact in a lipid raft complex. The functional significance of such a complex is highlighted by expression of the cytoplasmic domain of SI, which results in lower levels of M1A and a loss of SI from the BB. Together, these studies are the first to assign a specific role to M1A and suggest that this motor is involved in the retention of SI within the BB.
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影响因子:
64.5
作者:
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通讯作者:
LODISH, HF
影响因子:
7.8
作者:
KELLER, TCS;MOOSEKER, MS
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作者:
CHENEY R E;MOOSEKER M S
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MOOSEKER M S
DOI:
10.1073/pnas.94.26.14332
发表时间:
1997-12-23
影响因子:
11.1
作者:
Jontes, JD;Milligan, RA;Ostap, EM
通讯作者:
Ostap, EM
DOI:
10.1073/pnas.93.14.7053
发表时间:
1996-07-09
影响因子:
11.1
作者:
Durrbach, A;Collins, K;Coudrier, E
通讯作者:
Coudrier, E