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Table 3 Comparison of all screened signal sequences used in this study

From: High-efficiency expression and secretion of human FGF21 in Bacillus subtilis by intercalation of a mini-cistron cassette and combinatorial optimization of cell regulatory components

No.

SP

Sequences

Length (aa)

Type

Origins

D value

1

pelB

MKYLLPTAAAGLLLLAAQPAMA

22

Sec

E. coli

0.512

2

phoD

MAYDSRFDEWVQKLKEESFQNNTFDRRKFIQGAGKIAGLSLGLTIAQSVGAFEVNA

56

Tat

B. subtilis

0.245

3

pel

MKKVMLATALFLGLTPAGANA

21

Sec

B. subtilis

0.258

4

ywbN

MSDEQKKPEQIHRRDILKWGAMAGAAVA

28

Tat

B. subtilis

0.526

5

lipA

MKFVKRRIIALVTILMLSVTSLFALQPSAKAA

32

Sec

B. subtilis

0.332

6

protA

MKKKNIYSIRKLGVGIASVTLGTLLISGGVTPAANA

36

Sec

S. aureus

0.500

7

ywmC

MKKRFSLIMMTGLLFGLTSPAFA

23

Sec

B. subtilis

0.358

8

dacB

MRIFKKAVFVIMISFLIATVNVNTAHA

27

Sec

B. subtilis

0.478

9

nprE

MGLGKKLSVAVAASFMSLSISLPGVQA

27

Sec

B. subtilis

0.225

10

yddT

MRKKRVITCVMAASLTLGSLLPAGYASA

28

Sec

B. subtilis

0.282

11

yoqM

MKLRKVLTGSVLSLGLLVSASPAFA

25

Sec

B. subtilis

0.339

12

yvcE

MRKSLITLGLASVIGTSSFLIPFTSKTASA

30

Sec

B. subtilis

0.322