Table 2 The identification of host ERAD (endoplasmic reticulum-associated protein degradation) and symbiont SELMA (symbiont-derived ERAD-like machinery) components in N. oceanica (NO), N. gaditana (NG), P. tricornutum (PT), C. merolae (CM), and G. sulphuraria (GS)

From: Genome assembly of Nannochloropsis oceanica provides evidence of host nucleus overthrow by the symbiont nucleus during speciation

Species

 

NOa

 

NGa

 

PTa

 

CMa

GSa

H

S?

H

S?

H

S

  

ER translocation

Sec61

X

X

X

X

X

Derlin protein

Dfm1, hDer1-1 (sDer1-1)

X

Xsp

X

X

X

X

X

X

Der1, hDer1-2 (sDer1-2)

X

X

X

X

X

X

Ubiquitinylation

Hrd1/Der3 (ptE3p)

X

X

X

X

X

X

Hrd3

X

X

X

Uba1 (sUba1)

X

X

X

X

X

X

X

X

Doa10

X

X

X

X

X

Ubc6 (sUbc6)

Xsf

X

X

X

X

X

Polyubiquitin (sUbi)

X

X

X

X

Cdc48 complex

Cdc48 (sCdc48-1)

X

X

X

X

X

X

(sCdc48-2)

X

Ufd1 (sUfd1)

X

X

X

X

X

X

Npl4 (sNpl4)

X

X

X

X

X

X

(sUBX)

X

X

X

(sPUB)

X

Processing

Png1 (sPng1)

X

X

X

X

X

X

X

X

Dsk2 (sUbq)

X

X

X

X

X

X

X

Rad23

X

X

X

X

X

Ufd2

X

X

X

X

X

(ptDUP)

X

Unknown function

(PPP1)

X

X

X

X

X

Chaperones

Hsp70 (sHsp70)

X

Xsp

X

X

X

X

X

X

Hsp40/Ydj1/MAS5

X

X

X

X

X

(sDPC)

X

  1. The genes of N. oceanica are searched against the genome obtained in this study, while those of N. gaditana are searched against the genome published early19 (e-value < e−5 and annotated as the genes searched). In parentheses, symbiont specific if with s or putatively symbiont specific if without s. X, found; –, not found; ?, not sure as the signal peptide at the N-terminal was not found except two with superscript sp of N. oceanica. sf, annotated as different names but the function is the same
  2. aFor these two species, host-specific (H) and symbiont-specific (S) are judged according to the similarity between protein query and its hit. Data cited from Stork et al.42