High level expression of a frog alpha-amidating enzyme, AE-II, in cultured cells and silkworm larvae using a Bombyx mori nuclear polyhedrosis virus expression vector.

Abstract:

:A Xenopus laevis peptidyl C-terminal alpha-amidating enzyme (AE-II) gene, modified by deletion of a region encoding the putative membrane-spanning domain and the putative C-terminal cytosolic tail, was expressed in BoMo-15 AIIc insect cells and silkworm larvae using a Bombyx mori baculovirus expression vector system. The expressed enzyme was identified predominantly in the culture medium and the hemolymph of silkworm larvae, indicating successful secretion of the expressed AE-II. The level of recombinant enzyme in the larval hemolymph at 4 days post-infection (40 micrograms/ml) was more than 100-fold the peak levels found in the culture medium (250 ng/ml). The enzyme activity in the larval hemolymph at 4 days post-infection was 3700 units/ml.

journal_name

Cytotechnology

journal_title

Cytotechnology

authors

Kobayashi J,Imanishi S,Inoue H,Ohsuye K,Yamaichi K,Tsuruoka N,Tanaka S

doi

10.1007/BF02525492

subject

Has Abstract

pub_date

1992-01-01 00:00:00

pages

103-8

issue

2

eissn

0920-9069

issn

1573-0778

journal_volume

8

pub_type

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