Entry
Name
Protein processing in endoplasmic reticulum - Miniopterus natalensis (Natal long-fingered bat)
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
mna04141 Protein processing in endoplasmic reticulum
Ortholog table
Other DBs
Organism
Miniopterus natalensis (Natal long-fingered bat) [GN:
mna ]
Gene
107525213 SEC61A1; protein transport protein Sec61 subunit alpha [KO:K10956 ]
107530245 SEC61A2; protein transport protein Sec61 subunit alpha [KO:K10956 ]
107525995 SEC61G; protein transport protein Sec61 subunit gamma [KO:K07342 ]
107525217 RPN1; dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 1 [KO:K12666 ]
107542111 RPN2; dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 2 isoform X1 [KO:K12667 ]
107531686 DAD1; dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit DAD1 isoform X1 [KO:K12668 ]
107538427 DDOST; dolichyl-diphosphooligosaccharide--protein glycosyltransferase 48 kDa subunit [KO:K12670 ]
107530589 STT3A; dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit STT3A [KO:K07151 ] [EC:2.4.99.18 ]
107526382 STT3B; dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit STT3B [KO:K07151 ] [EC:2.4.99.18 ]
107535914 DNAJC10; dnaJ homolog subfamily C member 10 [KO:K09530 ] [EC:1.8.4.-]
107534342 PREB; prolactin regulatory element-binding protein isoform X1 [KO:K14003 ]
107545896 UGGT2; UDP-glucose:glycoprotein glucosyltransferase 2 [KO:K11718 ] [EC:2.4.1.-]
107528573 UGGT1; UDP-glucose:glycoprotein glucosyltransferase 1 [KO:K11718 ] [EC:2.4.1.-]
107529152 EDEM1; ER degradation-enhancing alpha-mannosidase-like protein 1 isoform X1 [KO:K10084 ]
107537205 EDEM2; ER degradation-enhancing alpha-mannosidase-like protein 2 isoform X1 [KO:K10085 ]
107546284 EDEM3; ER degradation-enhancing alpha-mannosidase-like protein 3 isoform X1 [KO:K10086 ]
107538804 SSR4; translocon-associated protein subunit delta isoform X1 [KO:K04571 ]
107539557 TRAM1; translocating chain-associated membrane protein 1 [KO:K14010 ]
107539052 NPLOC4; nuclear protein localization protein 4 homolog [KO:K14015 ]
107530559 UFD1L; ubiquitin fusion degradation protein 1 homolog [KO:K14016 ]
107539014 LOW QUALITY PROTEIN: heat shock 70 kDa protein 1-like [KO:K03283 ]
107545846 DNAJB12; LOW QUALITY PROTEIN: dnaJ homolog subfamily B member 12 [KO:K09518 ]
107541819 EIF2AK2; interferon-induced, double-stranded RNA-activated protein kinase isoform X1 [KO:K16195 ] [EC:2.7.11.1 ]
107545674 EIF2S1; eukaryotic translation initiation factor 2 subunit 1 isoform X1 [KO:K03237 ]
107533987 NFE2L2; nuclear factor erythroid 2-related factor 2 isoform X1 [KO:K05638 ]
107531265 ATF4; cyclic AMP-dependent transcription factor ATF-4 [KO:K04374 ]
107531903 PPP1R15A; protein phosphatase 1 regulatory subunit 15A [KO:K14019 ]
107535122 ATF6; cyclic AMP-dependent transcription factor ATF-6 alpha [KO:K09054 ]
107539006 ATF6B; cyclic AMP-dependent transcription factor ATF-6 beta isoform X1 [KO:K09049 ]
107543513 HERPUD1; homocysteine-responsive endoplasmic reticulum-resident ubiquitin-like domain member 1 protein isoform X1 [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
LinkDB
All DBs