Entry
Name
Protein processing in endoplasmic reticulum - Cebus imitator (Panamanian white-faced capuchin)
Description
The endoplasmic reticulum (ER) is a subcellular organelle where proteins are folded with the help of lumenal chaperones. Newly synthesized peptides enter the ER via the sec61 pore and are glycosylated. Correctly folded proteins are packaged into transport vesicles that shuttle them to the Golgi complex. Misfolded proteins are retained within the ER lumen in complex with molecular chaperones. Proteins that are terminally misfolded bind to BiP and are directed toward degradation through the proteasome in a process called ER-associated degradation (ERAD). Accumulation of misfolded proteins in the ER causes ER stress and activates a signaling pathway called the unfolded protein response (UPR). In certain severe situations, however, the protective mechanisms activated by the UPR are not sufficient to restore normal ER function and cells die by apoptosis.
Class
Genetic Information Processing; Folding, sorting and degradation
BRITE hierarchy
Pathway map
cimi04141 Protein processing in endoplasmic reticulum
Other DBs
Organism
Cebus imitator (Panamanian white-faced capuchin) [GN:
cimi ]
Gene
108282026 RAD23A; UV excision repair protein RAD23 homolog A isoform X1 [KO:K10839 ]
108283904 PPP1R15A; protein phosphatase 1 regulatory subunit 15A isoform X1 [KO:K14019 ]
108284112 EIF2S1; eukaryotic translation initiation factor 2 subunit 1 [KO:K03237 ]
108285450 HERPUD1; homocysteine-responsive endoplasmic reticulum-resident ubiquitin-like domain member 1 protein isoform X1 [KO:K14027 ]
108287256 MAN1B1; LOW QUALITY PROTEIN: endoplasmic reticulum mannosyl-oligosaccharide 1,2-alpha-mannosidase [KO:K23741 ]
108287849 DDOST; dolichyl-diphosphooligosaccharide--protein glycosyltransferase 48 kDa subunit [KO:K12670 ]
108289668 OSTC; oligosaccharyltransferase complex subunit OSTC isoform X1 [KO:K26501 ]
108290216 SSR2; translocon-associated protein subunit beta isoform X1 [KO:K13250 ]
108290730 TRAM1L1; translocating chain-associated membrane protein 1-like 1 [KO:K14010 ]
108291501 RPN1; dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 1 [KO:K12666 ]
108291538 SEC61A1; protein transport protein Sec61 subunit alpha [KO:K10956 ]
108291637 UFD1; ubiquitin recognition factor in ER-associated degradation protein 1 isoform X1 [KO:K14016 ]
108291907 RPN2; dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 2 [KO:K12667 ]
108292029 EDEM1; ER degradation-enhancing alpha-mannosidase-like protein 1 isoform X1 [KO:K10084 ]
108292582 EDEM2; ER degradation-enhancing alpha-mannosidase-like protein 2 [KO:K10085 ]
108293602 ATF6; cyclic AMP-dependent transcription factor ATF-6 alpha isoform X1 [KO:K09054 ]
108294539 SEC61G; protein transport protein Sec61 subunit gamma [KO:K07342 ]
108294750 BCAP31; B-cell receptor-associated protein 31 isoform X1 [KO:K14009 ]
108299400 STT3B; dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit STT3B [KO:K07151 ] [EC:2.4.99.18 ]
108299802 ATF6B; cyclic AMP-dependent transcription factor ATF-6 beta isoform X1 [KO:K09049 ]
108300687 HSPA8; LOW QUALITY PROTEIN: heat shock cognate 71 kDa protein [KO:K03283 ]
108300784 STT3A; dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit STT3A isoform X1 [KO:K07151 ] [EC:2.4.99.18 ]
108301266 EDEM3; ER degradation-enhancing alpha-mannosidase-like protein 3 isoform X1 [KO:K10086 ]
108301675 NPLOC4; nuclear protein localization protein 4 homolog isoform X1 [KO:K14015 ]
108302095 YOD1; ubiquitin thioesterase OTU1 isoform X1 [KO:K13719 ] [EC:3.1.2.-]
108302990 SSR1; translocon-associated protein subunit alpha isoform X1 [KO:K13249 ]
108305275 SEC61A2; protein transport protein Sec61 subunit alpha isoform X1 [KO:K10956 ]
108307320 NFE2L2; nuclear factor erythroid 2-related factor 2 isoform X1 [KO:K05638 ]
108307370 DNAJC10; dnaJ homolog subfamily C member 10 [KO:K09530 ] [EC:1.8.4.-]
108309731 DDIT3; LOW QUALITY PROTEIN: DNA damage-inducible transcript 3 protein [KO:K04452 ]
108314135 ERP29; endoplasmic reticulum resident protein 29 isoform X1 [KO:K09586 ]
108315292 ATF4; cyclic AMP-dependent transcription factor ATF-4 [KO:K04374 ]
108315343 TRAM1; translocating chain-associated membrane protein 1 [KO:K14010 ]
108315917 PREB; prolactin regulatory element-binding protein isoform X1 [KO:K14003 ]
108317780 UGGT1; UDP-glucose:glycoprotein glucosyltransferase 1 [KO:K11718 ] [EC:2.4.1.-]
108318075 DNAJB12; dnaJ homolog subfamily B member 12 isoform X1 [KO:K09518 ]
108318107 SAR1A; LOW QUALITY PROTEIN: GTP-binding protein SAR1a [KO:K07953 ] [EC:3.6.5.-]
Compound
Reference
Authors
Naidoo N
Title
ER and aging-Protein folding and the ER stress response.
Journal
Reference
Authors
Malhotra JD, Kaufman RJ
Title
The endoplasmic reticulum and the unfolded protein response.
Journal
Reference
Authors
Maattanen P, Gehring K, Bergeron JJ, Thomas DY
Title
Protein quality control in the ER: the recognition of misfolded proteins.
Journal
Reference
Authors
Stolz A, Wolf DH
Title
Endoplasmic reticulum associated protein degradation: a chaperone assisted journey to hell.
Journal
Reference
Authors
Dejgaard K, Theberge JF, Heath-Engel H, Chevet E, Tremblay ML, Thomas DY
Title
Organization of the Sec61 translocon, studied by high resolution native electrophoresis.
Journal
Related pathway
KO pathway