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Table 1 Screening of extracellular PCX cellulase activity of knockout and original S. cerevisiae BY4741 strains by 4-MUC assay (recombinant/original ratio)

From: Systematic screening of glycosylation- and trafficking-associated gene knockouts in Saccharomyces cerevisiaeidentifies mutants with improved heterologous exocellulase activity and host secretion

Gene null mutant

ORF name a

96-well screening 4-MUC assay

Condensed sample 4-MUC assay (o/n OD 600 )

Protein-trafficking genes:

chc1∆::KanMX

YGL206C

2.5

2.4 (2.8)

clc1∆::KanMX

YGR167W

3.8

2.6 (3.1)

nyv1∆::KanMX

YLR093Cf

1.5

1.7 (5.7)

pep12∆::KanMX

YOR036W

1.9

2.6 (2.9)

vam3∆::KanMX

YOR106W

1.6

NA

vps1∆::KanMX

YKR001C

1.2

NA

vps15∆::KanMX

YBR097W

1.9

1.3 (4.2)

vps21∆::KanMX

YOR089Cf

3.3

6.5 (6.1)

vps33∆::KanMX

YLR396C

1.5

0.9 (5.5)

ypt7∆::KanMX

YML001Wb

1.7

1.0 (5.1)

Glycosylation-related genes:

aga2∆::KanMX

YGL032C

0.9

NA

alg3∆::KanMX

YBL082Cc

0.5

NA

alg5∆::KanMX

YPL227Cc

0.7

NA

alg6∆::KanMX

YOR002Wc

0.8

NA

alg8∆::KanMX

YOR067Cc

1.5

NA

alg9∆::KanMX

YNL219Cc

1.5

NA

alg12∆::KanMX

YNR030Wc

1.7

NA

anp1∆::KanMX

YEL036Cc

1.8

NA

csg2∆::KanMX

YBR036C

1.0

NA

cwh41∆::KanMX

YGL027Cc

0.1

NA

cwh43∆::KanMX

YCR017C

1.3

NA

die2∆::KanMX

YGR227Wc

1.5

NA

gda1∆::KanMX

YEL042W

1.6

NA

gnt1∆::KanMX

YOR320C

1.2

NA

gon7∆::KanMX

YJL184W

0.1

NA

gtb1∆::KanMX

YDR221Wd,e

2.7

0.0 (12.6)

hoc1∆::KanMX

YJR075W

0.9

NA

hor7∆::KanMX

YMR251W-A

1.4

NA

ktr1∆::KanMX

YOR099Wd

0.8

NA

ktr2∆::KanMX

YKR061Wd,f

0.9

NA

ktr3∆::KanMX

YBR205Wd

1.0

NA

ktr4∆::KanMX

YBR199Wd

1.0

NA

ktr5∆::KanMX

YNL029Cc

1.0

NA

ktr6∆::KanMX

YPL053Cd

1.3

NA

ktr7∆::KanMX

YIL085Cd

1.0

NA

mnl1∆::KanMX

YHR204Wd

1.2

NA

mnn2∆::KanMX

YBR015Cc

1.3

0.8 (3.8)

mnn5∆::KanMX

YJL186Wf

1.9

3.0 (5.6)

mnn9∆::KanMX

YPL050Cc,f

2.2

3.8 (5.5)

mnn10∆::KanMX

YDR245W

2.5

6.0 (3.8)

mnn11∆::KanMX

YJL183Wc

2.0

4.5 (3.7)

mns1∆::KanMX

YJR131Wd

0.5

NA

mnt2∆::KanMX

YGL257Cd

1.2

NA

mnt3∆::KanMX

YIL014Wd,e

2.5

1.7 (5.2)

mrl1∆::KanMX

YPR079Wf

1.6

NA

ost3∆::KanMX

YOR085Wc

1.1

NA

ost4∆::KanMX

YDL232Wc,f

1.6

NA

ost5∆::KanMX

YGL226C-Ac

0.9

NA

ost6∆::KanMX

YML019Wc,f

1.8

NA

pmt1∆::KanMX

YDL095Wc

3.1

3.2 (4.7)

pmt2∆::KanMX

YAL023Cc

5.3

1.8 (4.7)

pmt3∆::KanMX

YOR321Wc

1.1

1.0 (4.4)

pmt5∆::KanMX

YDL093Wc

2.1

4.3 (6.3)

pmt6∆::KanMX

YGR199Wc

0.8

NA

ynd1∆::KanMX

YER005Wf

1.1

NA

yur1∆::KanMX

YJL139Cf

2.0

2.8(4.5)

yjr061w∆::KanMX

YJR061W

1.0

NA

  1. aYGL038C, YLR240W, YGL095C knockout strains failed to be transformed with PCX.
  2. bEnhancement of Ctcel8A endocellulase activity [52].
  3. Enhancementc and decreased of Cel8Aenz endocellulase activity [48].
  4. eDetectable NpaBGS beta-glucosidase activity as screened by pNPG assay.
  5. fThe null mutant could grow in SC-URA medium with 1% cellobiose when the NpaBGS beta-glucosidase gene is functional inside.
  6. The 4-MUC activity ratio is the average PCX activity of the three highest expressing recombinants (single-gene-KO strain) to the average original PCX activity (BY4741 strain).