Roles and regulation of phospholipid scramblases.
FEBS Lett
; 589(1): 3-14, 2015 Jan 02.
Article
in En
| MEDLINE
| ID: mdl-25479087
ABSTRACT
Phospholipid scramblase activity is involved in the collapse of phospholipid (PL) asymmetry at the plasma membrane leading to externalization of phosphatidylserine. This activity is crucial for initiation of the blood coagulation cascade and for recognition/elimination of apoptotic cells by macrophages. Efforts to identify gene products associated with this activity led to the characterization of PL scramblase (PLSCR) and XKR family members which contribute to phosphatidylserine exposure in response to apoptotic stimuli. Meanwhile, TMEM16 family members were identified to externalize phosphatidylserine in response to elevated calcium in Scott syndrome platelets, which is critical for activation of the coagulation cascade. Herein, we report their mechanisms of gene regulation, molecular functions independent of their scrambling activity, and their potential roles in pathogenic conditions.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Phosphatidylserines
/
Blood Coagulation Disorders
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Blood Platelets
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Cell Membrane
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Apoptosis
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Phospholipid Transfer Proteins
Limits:
Animals
/
Humans
Language:
En
Journal:
FEBS Lett
Year:
2015
Document type:
Article
Affiliation country:
United States