Protein: OST4
Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit OST4 (Oligosaccharyl transferase subunit OST4) (Oligosaccharyl transferase 4 kDa subunit) (OTase 4 kDa subunit)

Gene: OST4
Organism: Saccharomyces cerevisiae S288C
Interactions: 29
UniProt ID: Q99380

Gene Ontology (top 5):
GO:0005739 - mitochondrion
GO:0005789 - endoplasmic reticulum membrane
GO:0006487 - protein N-linked glycosylation
GO:0008250 - oligosaccharyltransferase complex
GO:0030674 - protein-macromolecule adaptor activity

Download interactions: TXT   MITAB-2.5

Interaction Interactor Experiments Homologs Category Interaction
Score
Confidence

809039

STT3
Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit STT3

9

0

Small-scale

0.918

High

873147

OST3
Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 3

9

1

Small-scale

0.749

High

1043884

OST6
Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit OST6

7

1

Small-scale

0.743

High

754671

OSTB
Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit WBP1

7

0

Small-scale

0.712

High

1038812

OSTD
Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit SWP1

7

0

Small-scale

0.712

High

835075

OST1
Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 1

7

0

Small-scale

0.709

High

863326

OST2
Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit OST2

6

0

Small-scale

0.693

High

914911

SC6B1
Protein transport protein SBH1

3

1

Small-scale

0.667

High

1362955

OST5
Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit OST5

4

0

Small-scale

0.653

High

1404049

OST4
Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit OST4

2

0

Small-scale

0.561

High

763171

SC61G
Protein transport protein SSS1

1

0

Small-scale

0.543

High

745404

EMP24
Endosomal protein P24B

1

0

High-throughput

0.518

High

822364

ELO3
Fatty acid elongase 3

1

0

High-throughput

0.518

High

865260

YJY5
Uncharacterized endoplasmic reticulum membrane protein YJR015W

1

0

High-throughput

0.518

High

916578

YIP1
Protein transport protein YIP1

1

0

High-throughput

0.518

High

919634

TNA1
High-affinity nicotinic acid transporter

1

0

High-throughput

0.518

High

1403969

TECR
Very-long-chain enoyl-CoA reductase

1

0

High-throughput

0.518

High

914918

SC6B2
Protein transport protein SBH2

1

1

Small-scale

0.481

High

577259

SEC63
Protein translocation protein SEC63

1

0

Small-scale

0.460

High

1056424

YFT2
Acyl-coenzyme A diphosphatase YFT2

1

0

Small-scale

0.460

High

748599

SC61A
Protein transport protein SEC61

2

0

Small-scale

0.328

High

663626

VATO
V-type proton ATPase subunit c''

1

0

High-throughput

0.282

High

673449

AGP1
General amino acid permease AGP1

1

0

High-throughput

0.282

High

923782

PRM1
Plasma membrane fusion protein PRM1

1

0

High-throughput

0.282

High

1060328

TPO1
Polyamine transporter 1

1

0

High-throughput

0.282

High

1062878

GAS4
1,3-beta-glucanosyltransferase GAS4

1

0

High-throughput

0.282

High

673619

YC21B
Transposon Ty2-C Gag-Pol polyprotein

1

0

High-throughput

0.249

Low

1084820

PST1
Cell wall mannoprotein PST1

1

0

High-throughput

0.249

Low


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Last updated: 11Aug2025