Entry
Name
Protein processing in endoplasmic reticulum - Brassica rapa (field mustard)
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
brp04141 Protein processing in endoplasmic reticulum
Ortholog table
Other DBs
Organism
Brassica rapa (field mustard) [GN:
brp ]
Gene
103828373 preprotein translocase subunit SCY1, chloroplastic isoform X2 [KO:K10956 ]
103854046 dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 1B [KO:K12666 ]
103832096 dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 1A [KO:K12666 ]
103827559 dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 1B [KO:K12666 ]
103858773 dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 2 [KO:K12667 ]
103861216 dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 2 [KO:K12667 ]
103840178 dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit DAD1 [KO:K12668 ]
103868894 dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit DAD1 [KO:K12668 ]
103837704 dolichyl-diphosphooligosaccharide--protein glycosyltransferase 48 kDa subunit [KO:K12670 ]
103829578 dolichyl-diphosphooligosaccharide--protein glycosyltransferase 48 kDa subunit [KO:K12670 ]
103840023 dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit STT3B isoform X2 [KO:K07151 ] [EC:2.4.99.18 ]
103831105 probable dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 3B [KO:K19478 ]
103831124 probable dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 3B [KO:K19478 ]
103836227 probable dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 3B [KO:K19478 ]
103835882 LOW QUALITY PROTEIN: protein transport protein SEC31 homolog A [KO:K14005 ]
103842135 LOW QUALITY PROTEIN: protein transport protein SEC31 homolog B [KO:K14005 ]
103831647 UDP-glucose:glycoprotein glucosyltransferase isoform X2 [KO:K11718 ] [EC:2.4.1.-]
103846035 translocon-associated protein subunit alpha isoform X1 [KO:K13249 ]
103864251 translocon-associated protein subunit alpha isoform X2 [KO:K13249 ]
103842542 ubiquitin recognition factor in ER-associated degradation protein 1 isoform X1 [KO:K14016 ]
103864264 ubiquitin recognition factor in ER-associated degradation protein 1 [KO:K14016 ]
103828680 LOW QUALITY PROTEIN: probable mediator of RNA polymerase II transcription subunit 37e [KO:K03283 ]
103837399 probable mediator of RNA polymerase II transcription subunit 37e [KO:K03283 ]
103840633 probable mediator of RNA polymerase II transcription subunit 37e [KO:K03283 ]
103847444 probable mediator of RNA polymerase II transcription subunit 37e [KO:K03283 ]
103847447 probable mediator of RNA polymerase II transcription subunit 37e [KO:K03283 ]
103845440 probable mediator of RNA polymerase II transcription subunit 37c [KO:K03283 ]
103859451 probable mediator of RNA polymerase II transcription subunit 37c [KO:K03283 ]
103860487 probable mediator of RNA polymerase II transcription subunit 37e [KO:K03283 ]
103871327 OVARIAN TUMOR DOMAIN-containing deubiquitinating enzyme 2 isoform X1 [KO:K13719 ] [EC:3.1.2.-]
103866961 eukaryotic translation initiation factor 2 subunit alpha homolog [KO:K03237 ]
103857925 eukaryotic translation initiation factor 2 subunit alpha homolog [KO:K03237 ]
103865783 eukaryotic translation initiation factor 2 subunit alpha homolog [KO:K03237 ]
108870147 eukaryotic translation initiation factor 2 subunit alpha homolog [KO:K03237 ]
103853398 ERAD-associated E3 ubiquitin-protein ligase component HRD3A [KO:K14026 ]
103872588 ERAD-associated E3 ubiquitin-protein ligase component HRD3A [KO:K14026 ]
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
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