Entry
Name
Protein processing in endoplasmic reticulum - Bison bison bison (American bison)
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
bbis04141 Protein processing in endoplasmic reticulum
Other DBs
Organism
Bison bison bison (American bison) [GN:
bbis ]
Gene
104980469 RPN2; dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 2 isoform X1 [KO:K12667 ]
104980690 STT3A; dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit STT3A [KO:K07151 ] [EC:2.4.99.18 ]
104981072 DDOST; dolichyl-diphosphooligosaccharide--protein glycosyltransferase 48 kDa subunit [KO:K12670 ]
104981975 DAD1; dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit DAD1 [KO:K12668 ]
104982185 UGGT2; UDP-glucose:glycoprotein glucosyltransferase 2 isoform X1 [KO:K11718 ] [EC:2.4.1.-]
104983375 SEC61A1; protein transport protein Sec61 subunit alpha isoform 1 [KO:K10956 ]
104983973 ATF6B; cyclic AMP-dependent transcription factor ATF-6 beta isoform X1 [KO:K09049 ]
104984118 ATF4; cyclic AMP-dependent transcription factor ATF-4 [KO:K04374 ]
104984195 DNAJC10; dnaJ homolog subfamily C member 10 [KO:K09530 ] [EC:1.8.4.-]
104985404 STT3B; dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit STT3B [KO:K07151 ] [EC:2.4.99.18 ]
104986022 UFD1L; ubiquitin fusion degradation protein 1 homolog [KO:K14016 ]
104987162 UGGT1; UDP-glucose:glycoprotein glucosyltransferase 1 isoform X1 [KO:K11718 ] [EC:2.4.1.-]
104987384 SSR2; translocon-associated protein subunit beta isoform X1 [KO:K13250 ]
104990112 SEC61G; protein transport protein Sec61 subunit gamma [KO:K07342 ]
104991592 EDEM1; ER degradation-enhancing alpha-mannosidase-like protein 1 [KO:K10084 ]
104993460 EIF2S1; eukaryotic translation initiation factor 2 subunit 1 [KO:K03237 ]
104993649 TRAM1; translocating chain-associated membrane protein 1 [KO:K14010 ]
104993679 RPN1; dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 1 [KO:K12666 ]
104995628 PPP1R15A; protein phosphatase 1 regulatory subunit 15A [KO:K14019 ]
104997488 DNAJB12; dnaJ homolog subfamily B member 12 isoform X1 [KO:K09518 ]
104998072 EDEM3; ER degradation-enhancing alpha-mannosidase-like protein 3 isoform X1 [KO:K10086 ]
104998251 PLAA; phospholipase A-2-activating protein isoform X1 [KO:K14018 ]
104998764 SEC61A2; protein transport protein Sec61 subunit alpha isoform 2 isoform X1 [KO:K10956 ]
104998835 YOD1; ubiquitin thioesterase OTU1 isoform X1 [KO:K13719 ] [EC:3.1.2.-]
104999179 ATF6; cyclic AMP-dependent transcription factor ATF-6 alpha isoform X1 [KO:K09054 ]
104999340 EDEM2; ER degradation-enhancing alpha-mannosidase-like protein 2 [KO:K10085 ]
104999676 TRAM1L1; translocating chain-associated membrane protein 1-like 1 [KO:K14010 ]
105000429 NPLOC4; nuclear protein localization protein 4 homolog [KO:K14015 ]
105004314 HERPUD1; homocysteine-responsive endoplasmic reticulum-resident ubiquitin-like domain member 1 protein [KO:K14027 ]
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