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Table 1 Positive clones identified in substrate-trap screening of a human brain cDNA library using LexA-laforin C266S as bait. Yeast THY-AP4 cells transformed with plasmid pBridge-laforin C266S were co-transformed with a human brain cDNA library in pACT2

From: The laforin/malin E3-ubiquitin ligase complex ubiquitinates pyruvate kinase M1/M2

No. of positive clones

Encoded protein

Uniprot number

Intensity of interaction

5

Pyruvate kinase PKM1/PKM2

Q504U3

From ++ to +++

3

E3 ubiquitin ligase TOPORS

Q9NS56

++

3

Cytochrome C oxidase subunit 5A

P20674

++

1

Laforin (EPM2A)

O95278

+++

1

PP1 regulatory subunit R5/PTG (PPP1R3C)

Q9UQK1

++

1

G/T mismatch-specific thymine DNA glycosylase

Q13569

+++

1

26S proteasome regulatory subunit 6A

P17980

++

1

HMG domain-containing protein 4

Q9UGU5

++

1

Translation initiation factor eIF-2B subunit alpha

Q14232

++

  1. Positive clones were confirmed, subjected to BLAST analysis and protein interaction estimated by β-galactosidase filter lift assays (+++, when the blue color appeared in less than 5 min; ++, when the blue color appeared between 5 and 20 min)