Entry
Name
Autophagy - animal - Ursus maritimus (polar bear)
Description
Autophagy (or macroautophagy) is a cellular catabolic pathway involving in protein degradation, organelle turnover, and non-selective breakdown of cytoplasmic components, which is evolutionarily conserved among eukaryotes and exquisitely regulated. This progress initiates with production of the autophagosome, a double-membrane intracellular structure of reticular origin that engulfs cytoplasmic contents and ultimately fuses with lysosomes for cargo degradation. Autophagy is regulated in response to extra- or intracellular stress and signals such as starvation, growth factor deprivation and ER stress. Constitutive level of autophagy plays an important role in cellular homeostasis and maintains quality control of essential cellular components.
Class
Cellular Processes; Transport and catabolism
BRITE hierarchy
Pathway map
Other DBs
Organism
Ursus maritimus (polar bear) [GN:
umr ]
Gene
103658404 BNIP3; BCL2/adenovirus E1B 19 kDa protein-interacting protein 3 [KO:K15464 ]
103659501 TANK; TRAF family member-associated NF-kappa-B activator isoform X1 [KO:K12650 ]
103660637 CALCOCO2; calcium-binding and coiled-coil domain-containing protein 2 isoform X1 [KO:K21348 ]
103660995 ATG9B; LOW QUALITY PROTEIN: autophagy-related protein 9B [KO:K17907 ]
103661154 VPS33A; vacuolar protein sorting-associated protein 33A [KO:K20182 ]
103661666 DEPTOR; DEP domain-containing mTOR-interacting protein isoform X1 [KO:K20402 ]
103662121 GABARAPL2; gamma-aminobutyric acid receptor-associated protein-like 2 [KO:K08341 ]
103662318 VPS11; vacuolar protein sorting-associated protein 11 homolog [KO:K20179 ]
103662804 ATG4B; cysteine protease ATG4B isoform X1 [KO:K08342 ] [EC:3.4.22.-]
103663067 ATG4C; cysteine protease ATG4C isoform X1 [KO:K08342 ] [EC:3.4.22.-]
103663617 PIK3R1; phosphatidylinositol 3-kinase regulatory subunit alpha isoform X3 [KO:K02649 ]
103664378 SUPT20H; transcription factor SPT20 homolog isoform X1 [KO:K21245 ]
103665378 WDFY3; WD repeat and FYVE domain-containing protein 3 [KO:K22262 ]
103665605 PLEKHM1; pleckstrin homology domain-containing family M member 1 isoform X1 [KO:K23282 ]
103665675 WIPI1; WD repeat domain phosphoinositide-interacting protein 1 isoform X1 [KO:K17908 ]
103665840 WDR45B; WD repeat domain phosphoinositide-interacting protein 3 [KO:K22991 ]
103666643 MAP1LC3C; microtubule-associated proteins 1A/1B light chain 3C [KO:K10435 ]
103666874 PIK3CD; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit delta isoform [KO:K00922 ] [EC:2.7.1.153 ]
103668007 WDR45; WD repeat domain phosphoinositide-interacting protein 4 [KO:K22991 ]
103668783 MLST8; target of rapamycin complex subunit LST8 isoform X1 [KO:K08266 ]
103668914 ATG4A; cysteine protease ATG4A isoform X1 [KO:K08342 ] [EC:3.4.22.-]
103669133 GABARAPL1; gamma-aminobutyric acid receptor-associated protein-like 1 [KO:K08341 ]
103669229 SNAP29; synaptosomal-associated protein 29 isoform X1 [KO:K08509 ]
103669551 ATG7; ubiquitin-like modifier-activating enzyme ATG7 isoform X1 [KO:K08337 ]
103669915 TP53INP2; tumor protein p53-inducible nuclear protein 2 [KO:K21247 ]
103669916 MAP1LC3A; microtubule-associated proteins 1A/1B light chain 3A [KO:K10435 ]
103670082 WIPI2; WD repeat domain phosphoinositide-interacting protein 2 isoform X1 [KO:K17908 ]
103670766 PIK3R3; phosphatidylinositol 3-kinase regulatory subunit gamma [KO:K02649 ]
103671434 ZFYVE1; zinc finger FYVE domain-containing protein 1 isoform X1 [KO:K17603 ]
103671936 EIF2S1; eukaryotic translation initiation factor 2 subunit 1 [KO:K03237 ]
103672328 AMBRA1; activating molecule in BECN1-regulated autophagy protein 1 isoform X1 [KO:K17985 ]
103673450 VPS18; vacuolar protein sorting-associated protein 18 homolog [KO:K20181 ]
103673638 ATG2B; autophagy-related protein 2 homolog B isoform X1 [KO:K17906 ]
103673943 MAP1LC3B; microtubule-associated proteins 1A/1B light chain 3B [KO:K10435 ]
103674517 VPS16; vacuolar protein sorting-associated protein 16 homolog [KO:K20180 ]
103674591 ATG14; beclin 1-associated autophagy-related key regulator [KO:K17889 ]
103674596 VPS41; vacuolar protein sorting-associated protein 41 homolog isoform X1 [KO:K20184 ]
103675162 PIK3R2; phosphatidylinositol 3-kinase regulatory subunit beta [KO:K02649 ]
103676125 PIK3CA; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform [KO:K00922 ] [EC:2.7.1.153 ]
103677420 RB1CC1; RB1-inducible coiled-coil protein 1 isoform X1 [KO:K17589 ]
103678064 UVRAG; UV radiation resistance-associated gene protein isoform X1 [KO:K21249 ]
103678592 PIK3CB; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit beta isoform isoform X1 [KO:K00922 ] [EC:2.7.1.153 ]
103678722 ATG4D; cysteine protease ATG4D isoform X1 [KO:K08342 ] [EC:3.4.22.-]
103678946 RUBCN; run domain Beclin-1-interacting and cysteine-rich domain-containing protein isoform X1 [KO:K19330 ]
103679563 ATG2A; autophagy-related protein 2 homolog A isoform X1 [KO:K17906 ]
103680234 LAMP2; lysosome-associated membrane glycoprotein 2 isoform X1 [KO:K06528 ]
103680567 GORASP1; Golgi reassembly-stacking protein 1 isoform X1 [KO:K26797 ]
103681482 ATG10; LOW QUALITY PROTEIN: ubiquitin-like-conjugating enzyme ATG10 [KO:K17888 ]
103682372 RRAS2; LOW QUALITY PROTEIN: ras-related protein R-Ras2 [KO:K07830 ]
121100753 PPP2CA; serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform [KO:K04382 ] [EC:3.1.3.16 ]
Compound
C00350 Phosphatidylethanolamine
C01194 1-Phosphatidyl-D-myo-inositol
C04549 1-Phosphatidyl-1D-myo-inositol 3-phosphate
C05981 Phosphatidylinositol-3,4,5-trisphosphate
Reference
Authors
Meijer AJ, Codogno P.
Title
Regulation and role of autophagy in mammalian cells.
Journal
Reference
Authors
Deretic V.
Title
Autophagy in innate and adaptive immunity.
Journal
Reference
Authors
Levine B, Yuan J.
Title
Autophagy in cell death: an innocent convict?
Journal
Reference
Authors
Tanida I, Ueno T, Kominami E.
Title
LC3 conjugation system in mammalian autophagy.
Journal
Reference
Authors
Lum JJ, DeBerardinis RJ, Thompson CB.
Title
Autophagy in metazoans: cell survival in the land of plenty.
Journal
Reference
Authors
Reggiori F, Klionsky DJ.
Title
Autophagosomes: biogenesis from scratch?
Journal
Reference
Authors
Klionsky DJ, Emr SD.
Title
Autophagy as a regulated pathway of cellular degradation.
Journal
Reference
Authors
Bechet D, Tassa A, Taillandier D, Combaret L, Attaix D.
Title
Lysosomal proteolysis in skeletal muscle.
Journal
Reference
Authors
He C, Klionsky DJ
Title
Regulation mechanisms and signaling pathways of autophagy.
Journal
Reference
Authors
Yang Z, Klionsky DJ
Title
An overview of the molecular mechanism of autophagy.
Journal
Reference
Authors
Yang Z, Klionsky DJ
Title
Mammalian autophagy: core molecular machinery and signaling regulation.
Journal
Reference
Authors
Chen Y, Klionsky DJ
Title
The regulation of autophagy - unanswered questions.
Journal
Reference
Authors
Mizushima N, Yoshimori T, Ohsumi Y
Title
The role of Atg proteins in autophagosome formation.
Journal
Reference
Authors
Russell RC, Yuan HX, Guan KL
Title
Autophagy regulation by nutrient signaling.
Journal
Reference
Authors
Noda NN, Fujioka Y
Title
Atg1 family kinases in autophagy initiation.
Journal
Related pathway
umr04141 Protein processing in endoplasmic reticulum
KO pathway