Doc2: a novel brain protein having two repeated C2-like domains.

Abstract:

:Two repeated C2-like domains interacting with Ca2+ and phospholipid are found in synaptotagmin and Rabphilin-3A which are implicated in neurotransmitter release. Here we have isolated a cDNA encoding a novel protein having two repeated C2-like domains from a human brain cDNA library. The isolated cDNA encodes a protein with 400 amino acids and a M(r) of 44,071. The purified recombinant protein indeed interacts with Ca2+ and phospholipid. We have named this protein Doc2 (Double C2). Doc2 is exclusively expressed in brain and is highly concentrated in the synaptic vesicle fraction. These results suggest that Doc2 is a novel brain protein and serves as a Ca2+ sensor in neurotransmitter release.

authors

Orita S,Sasaki T,Naito A,Komuro R,Ohtsuka T,Maeda M,Suzuki H,Igarashi H,Takai Y

doi

10.1006/bbrc.1995.1062

subject

Has Abstract

pub_date

1995-01-17 00:00:00

pages

439-48

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(85)71062-5

journal_volume

206

pub_type

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