| Entry |
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| Name |
Fc gamma R-mediated phagocytosis - Homo sapiens (human)
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| Description |
Phagocytosis plays an essential role in host-defense mechanisms through the uptake and destruction of infectious pathogens. Specialized cell types including macrophages, neutrophils, and monocytes take part in this process in higher organisms. After opsonization with antibodies (IgG), foreign extracellular materials are recognized by Fc gamma receptors. Cross-linking of Fc gamma receptors initiates a variety of signals mediated by tyrosine phosphorylation of multiple proteins, which lead through the actin cytoskeleton rearrangements and membrane remodeling to the formation of phagosomes. Nascent phagosomes undergo a process of maturation that involves fusion with lysosomes. The acquisition of lysosomal proteases and release of reactive oxygen species are crucial for digestion of engulfed materials in phagosomes.
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| Class |
Organismal Systems; Immune system
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| Pathway map |
| Fc gamma R-mediated phagocytosis |

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| Disease |
| Chronic granulomatous disease | | Nemaline myopathy | | Neurodegeneration with brain iron accumulation (NBIA) | | Immune thrombocytopenia (ITP) |
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| Other DBs |
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| Organism |
Homo sapiens (human) [GN: hsa]
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| Gene |
| FCGR1A; Fc fragment of IgG, high affinity Ia, receptor (CD64) [KO: K06498] | | FCGR2A; Fc fragment of IgG, low affinity IIa, receptor (CD32) [KO: K06472] | | PTPRC; protein tyrosine phosphatase, receptor type, C [KO: K06478] [EC: 3.1.3.48] | | | | LYN; v-yes-1 Yamaguchi sarcoma viral related oncogene homolog [KO: K05854] [EC: 2.7.10.2] | | | | PIK3CA; phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit alpha [KO: K00922] [EC: 2.7.1.153] | | PIK3CD; phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit delta [KO: K00922] [EC: 2.7.1.153] | | PIK3CB; phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit beta [KO: K00922] [EC: 2.7.1.153] | | PIK3CG; phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit gamma [KO: K00922] [EC: 2.7.1.153] | | PIK3R1; phosphoinositide-3-kinase, regulatory subunit 1 (alpha) [KO: K02649] | | PIK3R5; phosphoinositide-3-kinase, regulatory subunit 5 [KO: K02649] | | PIK3R2; phosphoinositide-3-kinase, regulatory subunit 2 (beta) [KO: K02649] | | PIK3R3; phosphoinositide-3-kinase, regulatory subunit 3 (gamma) [KO: K02649] | | AKT1; v-akt murine thymoma viral oncogene homolog 1 [KO: K04456] [EC: 2.7.11.1] | | AKT2; v-akt murine thymoma viral oncogene homolog 2 [KO: K04456] [EC: 2.7.11.1] | | AKT3; v-akt murine thymoma viral oncogene homolog 3 (protein kinase B, gamma) [KO: K04456] [EC: 2.7.11.1] | | RPS6KB1; ribosomal protein S6 kinase, 70kDa, polypeptide 1 [KO: K04688] [EC: 2.7.11.1] | | RPS6KB2; ribosomal protein S6 kinase, 70kDa, polypeptide 2 [KO: K04688] [EC: 2.7.11.1] | | | | PLCG2; phospholipase C, gamma 2 (phosphatidylinositol-specific) [KO: K05859] [EC: 3.1.4.11] | | RAF1; v-raf-1 murine leukemia viral oncogene homolog 1 [KO: K04366] [EC: 2.7.11.1] | | MAP2K1; mitogen-activated protein kinase kinase 1 [KO: K04368] [EC: 2.7.12.2] | | | | | | MARCKS; myristoylated alanine-rich protein kinase C substrate [KO: K12561] | | MARCKSL1; MARCKS-like 1 [KO: K13536] | | PLD1; phospholipase D1, phosphatidylcholine-specific [KO: K01115] [EC: 3.1.4.4] | | | | PPAP2A; phosphatidic acid phosphatase type 2A [KO: K01080] [EC: 3.1.3.4] | | PPAP2B; phosphatidic acid phosphatase type 2B [KO: K01080] [EC: 3.1.3.4] | | PPAP2C; phosphatidic acid phosphatase type 2C [KO: K01080] [EC: 3.1.3.4] | | | | | | | | | | | | NCF1; neutrophil cytosolic factor 1 [KO: K08011] | | | | | | VAV3; vav 3 guanine nucleotide exchange factor [KO: K05730] | | VAV1; vav 1 guanine nucleotide exchange factor [KO: K05730] | | VAV2; vav 2 guanine nucleotide exchange factor [KO: K05730] | | CDC42; cell division cycle 42 [KO: K04393] | | WAS; Wiskott-Aldrich syndrome [KO: K05747] | | WASL; Wiskott-Aldrich syndrome-like [KO: K05747] | | VASP; vasodilator-stimulated phosphoprotein [KO: K06274] | | ARPC5; actin related protein 2/3 complex, subunit 5, 16kDa [KO: K05754] | | ARPC5L; actin related protein 2/3 complex, subunit 5-like [KO: K05754] | | ARPC4; actin related protein 2/3 complex, subunit 4, 20kDa [KO: K05755] | | ARPC3; actin related protein 2/3 complex, subunit 3, 21kDa [KO: K05756] | | ARPC1B; actin related protein 2/3 complex, subunit 1B, 41kDa [KO: K05757] | | ARPC1A; actin related protein 2/3 complex, subunit 1A, 41kDa [KO: K05757] | | ARPC2; actin related protein 2/3 complex, subunit 2, 34kDa [KO: K05758] | | RAC1; ras-related C3 botulinum toxin substrate 1 (rho family, small GTP binding protein Rac1) [KO: K04392] | | RAC2; ras-related C3 botulinum toxin substrate 2 (rho family, small GTP binding protein Rac2) [KO: K07860] | | WASF1; WAS protein family, member 1 [KO: K05753] | | WASF2; WAS protein family, member 2 [KO: K05748] | | WASF3; WAS protein family, member 3 [KO: K06083] | | PAK1; p21 protein (Cdc42/Rac)-activated kinase 1 [KO: K04409] [EC: 2.7.11.1] | | | | | | CFL1; cofilin 1 (non-muscle) [KO: K05765] | | CFL2; cofilin 2 (muscle) [KO: K05765] | | PIP5K1C; phosphatidylinositol-4-phosphate 5-kinase, type I, gamma [KO: K00889] [EC: 2.7.1.68] | | PIP5K1A; phosphatidylinositol-4-phosphate 5-kinase, type I, alpha [KO: K00889] [EC: 2.7.1.68] | | PIP5K1B; phosphatidylinositol-4-phosphate 5-kinase, type I, beta [KO: K00889] [EC: 2.7.1.68] | | ARF6; ADP-ribosylation factor 6 [KO: K07941] | | CRK; v-crk sarcoma virus CT10 oncogene homolog (avian) [KO: K04438] | | CRKL; v-crk sarcoma virus CT10 oncogene homolog (avian)-like [KO: K04438] | | DOCK2; dedicator of cytokinesis 2 [KO: K12367] | | ASAP1; ArfGAP with SH3 domain, ankyrin repeat and PH domain 1 [KO: K12488] | | ASAP3; ArfGAP with SH3 domain, ankyrin repeat and PH domain 3 [KO: K12488] | | ASAP2; ArfGAP with SH3 domain, ankyrin repeat and PH domain 2 [KO: K12488] | | FCGR2B; Fc fragment of IgG, low affinity IIb, receptor (CD32) [KO: K12560] | | INPP5D; inositol polyphosphate-5-phosphatase, 145kDa [KO: K03084] [EC: 3.1.3.86] | | INPPL1; inositol polyphosphate phosphatase-like 1 [KO: K15909] [EC: 3.1.3.86] | | GAB2; GRB2-associated binding protein 2 [KO: K08091] | | LAT; linker for activation of T cells [KO: K07362] | | | | | | PLA2G4B; phospholipase A2, group IVB (cytosolic) [KO: K16342] [EC: 3.1.1.4] | | | | | | FCGR3A; Fc fragment of IgG, low affinity IIIa, receptor (CD16a) [KO: K06463] | | | | PLA2G4D; phospholipase A2, group IVD (cytosolic) [KO: K16342] [EC: 3.1.1.4] | | PLA2G4A; phospholipase A2, group IVA (cytosolic, calcium-dependent) [KO: K16342] [EC: 3.1.1.4] | | | | | | PLA2G6; phospholipase A2, group VI (cytosolic, calcium-independent) [KO: K16343] [EC: 3.1.1.4] |
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| Compound |
| Calcium cation | | Diacylglycerol | | Arachidonate | | Phosphatidate | | D-myo-Inositol 1,4,5-trisphosphate | | 1-Phosphatidyl-D-myo-inositol 4,5-bisphosphate | | Phosphatidylinositol-3,4,5-trisphosphate | | Sphingosine 1-phosphate |
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| Reference |
|
| Authors |
Garcia-Garcia E, Rosales C |
| Title |
Signal transduction during Fc receptor-mediated phagocytosis. |
| Journal |
J Leukoc Biol 72:1092-108 (2002) |
| Reference |
|
| Authors |
Cox D, Greenberg S |
| Title |
Phagocytic signaling strategies: Fc(gamma)receptor-mediated phagocytosis as a model system. |
| Journal |
Semin Immunol 13:339-45 (2001) |
| Reference |
|
| Authors |
Swanson JA, Hoppe AD |
| Title |
The coordination of signaling during Fc receptor-mediated phagocytosis. |
| Journal |
J Leukoc Biol 76:1093-103 (2004) |
| Reference |
|
| Authors |
Ravetch JV, Bolland S |
| Title |
IgG Fc receptors. |
| Journal |
Annu Rev Immunol 19:275-90 (2001) |
| Reference |
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| Authors |
Groves E, Dart AE, Covarelli V, Caron E |
| Title |
Molecular mechanisms of phagocytic uptake in mammalian cells. |
| Journal |
Cell Mol Life Sci 65:1957-76 (2008) |
| Reference |
|
| Authors |
Kwiatkowska K, Sobota A |
| Title |
Signaling pathways in phagocytosis. |
| Journal |
Bioessays 21:422-31 (1999) |
| Reference |
|
| Authors |
Greenberg S |
| Title |
Modular components of phagocytosis. |
| Journal |
J Leukoc Biol 66:712-7 (1999) |
| Reference |
|
| Authors |
Lennartz MR |
| Title |
Phospholipases and phagocytosis: the role of phospholipid-derived second messengers in phagocytosis. |
| Journal |
Int J Biochem Cell Biol 31:415-30 (1999) |
| Reference |
|
| Authors |
May RC, Machesky LM |
| Title |
Phagocytosis and the actin cytoskeleton. |
| Journal |
J Cell Sci 114:1061-77 (2001) |
| Reference |
|
| Authors |
Joshi T, Butchar JP, Tridandapani S |
| Title |
Fcgamma receptor signaling in phagocytes. |
| Journal |
Int J Hematol 84:210-6 (2006) |
| Reference |
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| Authors |
Lee WL, Cosio G, Ireton K, Grinstein S |
| Title |
Role of CrkII in Fcgamma receptor-mediated phagocytosis. |
| Journal |
J Biol Chem 282:11135-43 (2007) |
| Reference |
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| Authors |
Uchida H, Kondo A, Yoshimura Y, Mazaki Y, Sabe H |
| Title |
PAG3/Papalpha/KIAA0400, a GTPase-activating protein for ADP-ribosylation factor (ARF), regulates ARF6 in Fcgamma receptor-mediated phagocytosis of macrophages. |
| Journal |
J Exp Med 193:955-66 (2001) |
| Reference |
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| Authors |
Ganesan LP, Wei G, Pengal RA, Moldovan L, Moldovan N, Ostrowski MC, Tridandapani S |
| Title |
The serine/threonine kinase Akt Promotes Fc gamma receptor-mediated phagocytosis in murine macrophages through the activation of p70S6 kinase. |
| Journal |
J Biol Chem 279:54416-25 (2004) |
| Reference |
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| Authors |
Melendez A, Floto RA, Gillooly DJ, Harnett MM, Allen JM |
| Title |
FcgammaRI coupling to phospholipase D initiates sphingosine kinase-mediated calcium mobilization and vesicular trafficking. |
| Journal |
J Biol Chem 273:9393-402 (1998) |
| Reference |
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| Authors |
Gu H, Botelho RJ, Yu M, Grinstein S, Neel BG |
| Title |
Critical role for scaffolding adapter Gab2 in Fc gamma R-mediated phagocytosis. |
| Journal |
J Cell Biol 161:1151-61 (2003) |
| Reference |
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| Authors |
Dana R, Leto TL, Malech HL, Levy R |
| Title |
Essential requirement of cytosolic phospholipase A2 for activation of the phagocyte NADPH oxidase. |
| Journal |
J Biol Chem 273:441-5 (1998) |
| Reference |
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| Authors |
Gold ES, Underhill DM, Morrissette NS, Guo J, McNiven MA, Aderem A |
| Title |
Dynamin 2 is required for phagocytosis in macrophages. |
| Journal |
J Exp Med 190:1849-56 (1999) |
| Reference |
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| Authors |
Gold ES, Morrissette NS, Underhill DM, Guo J, Bassetti M, Aderem A |
| Title |
Amphiphysin IIm, a novel amphiphysin II isoform, is required for macrophage phagocytosis. |
| Journal |
Immunity 12:285-92 (2000) |
| Reference |
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| Authors |
Raeder EM, Mansfield PJ, Hinkovska-Galcheva V, Shayman JA, Boxer LA |
| Title |
Syk activation initiates downstream signaling events during human polymorphonuclear leukocyte phagocytosis. |
| Journal |
J Immunol 163:6785-93 (1999) |
| Reference |
|
| Authors |
Sanchez-Mejorada G, Rosales C |
| Title |
Signal transduction by immunoglobulin Fc receptors. |
| Journal |
J Leukoc Biol 63:521-33 (1998) |
| Reference |
|
| Authors |
Rosales C (ed). |
| Title |
Molecular Mechanisms of Phagocytosis |
| Journal |
Springer (2005) |
| KO pathway |
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