Send us a Message



Submit Data |  Help |  Video Tutorials |  News |  Publications |  Download |  REST API |  Citing RGD |  Contact   

ONTOLOGY REPORT - ANNOTATIONS


Term:intracellular iron ion homeostasis
go back to main search page
Accession:GO:0006879 term browser browse the term
Definition:A homeostatic process involved in the maintenance of a steady state level of iron ions within a cell.
Synonyms:exact_synonym: cellular iron ion homeostasis
 broad_synonym: iron homeostasis


GViewer not supported for the selected species.

show annotations for term's descendants           Sort by:
intracellular iron ion homeostasis term browser
Symbol Object Name Qualifiers Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Abcb7 ATP binding cassette subfamily B member 7 involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:16424901) Ensembl
MGI
TreeGrafter
PMID:16424901 GO_REF:0000107 GO_REF:0000118 NCBI chrNW_004936683:1,224,703...1,326,761
Ensembl chrNW_004936683:1,222,450...1,326,765
JBrowse link
G Aco1 aconitase 1 acts_upstream_of_or_within
involved_in
ISO
IEA
(PMID:14726953) RGD
MGI
Ensembl
PMID:14726953 PMID:15086359 GO_REF:0000107 RGD:1642737 NCBI chrNW_004936524:1,081,672...1,134,971
Ensembl chrNW_004936524:1,081,696...1,134,971
JBrowse link
G Alas2 5'-aminolevulinate synthase 2 involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:10562540) Ensembl
MGI
PMID:10562540 GO_REF:0000107 NCBI chrNW_004936751:1,818,255...1,841,028
Ensembl chrNW_004936751:1,814,446...1,841,531
JBrowse link
G Atp13a2 ATPase cation transporting 13A2 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936474:3,968,216...3,980,821
Ensembl chrNW_004936474:3,968,506...3,980,815
JBrowse link
G Atp6ap1 ATPase H+ transporting accessory protein 1 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936809:1,179,507...1,188,172
Ensembl chrNW_004936809:1,179,464...1,188,283
JBrowse link
G Atp6v0a2 ATPase H+ transporting V0 subunit a2 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936558:1,104,627...1,138,487
Ensembl chrNW_004936558:1,103,135...1,134,573
JBrowse link
G Atp6v0d1 ATPase H+ transporting V0 subunit d1 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936475:17,888,788...17,927,513
Ensembl chrNW_004936475:17,886,371...17,927,557
JBrowse link
G Atp6v1a ATPase H+ transporting V1 subunit A involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936536:1,257,801...1,314,770
Ensembl chrNW_004936536:1,257,990...1,312,530
JBrowse link
G Atp6v1g1 ATPase H+ transporting V1 subunit G1 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936487:3,801,745...3,809,997
Ensembl chrNW_004936487:3,801,665...3,811,293
JBrowse link
G B2m beta-2-microglobulin involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936471:7,646,504...7,655,656
Ensembl chrNW_004936471:7,646,373...7,655,778
JBrowse link
G Bmp6 bone morphogenetic protein 6 involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:21703414) Ensembl
MGI
PMID:21703414 GO_REF:0000107 NCBI chrNW_004936534:4,707,658...4,871,865
Ensembl chrNW_004936534:4,709,064...4,871,023
JBrowse link
G Bola2b bolA family member 2B involved_in IEA TreeGrafter GO_REF:0000118 NCBI chrNW_004936501:12,335,330...12,335,941 JBrowse link
G Ccdc115 coiled-coil domain containing 115 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936469:41,083,713...41,087,106
Ensembl chrNW_004936469:41,083,738...41,087,087
JBrowse link
G Cp ceruloplasmin involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936519:6,431,156...6,473,183
Ensembl chrNW_004936519:6,431,144...6,481,858
JBrowse link
G Egln1 egl-9 family hypoxia inducible factor 1 involved_in ISO (MGI:5752072|PMID:26818499) ParkinsonsUK-UCL PMID:26818499 MGI:5752072 NCBI chrNW_004936484:19,343,770...19,386,087 JBrowse link
G Erfe erythroferrone involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936525:324,814...330,067
Ensembl chrNW_004936525:323,090...329,664
JBrowse link
G Fbxl5 F-box and leucine rich repeat protein 5 involved_in IEA Ensembl
InterPro
GO_REF:0000002 GO_REF:0000107 NCBI chrNW_004936477:12,279,521...12,312,927
Ensembl chrNW_004936477:12,279,541...12,313,007
JBrowse link
G Frrs1 ferric chelate reductase 1 involved_in IEA TreeGrafter GO_REF:0000118 NCBI chrNW_004936537:89,844...116,512
Ensembl chrNW_004936537:89,830...116,048
JBrowse link
G Fth1 ferritin heavy chain 1 involved_in IEA UniProt
InterPro
GO_REF:0000002 GO_REF:0000043 NCBI chrNW_004936581:1,118,905...1,120,592 JBrowse link
G Ftl ferritin light chain involved_in IEA UniProt
InterPro
GO_REF:0000002 GO_REF:0000043 NCBI chrNW_004936664:2,976,325...2,977,878
Ensembl chrNW_004936664:2,976,314...2,977,877
JBrowse link
G Ftmt ferritin mitochondrial involved_in IEA InterPro
UniProt
Ensembl
GO_REF:0000002 GO_REF:0000043 GO_REF:0000107 NCBI chrNW_004936575:2,077,732...2,078,445
Ensembl chrNW_004936575:2,077,732...2,078,445
JBrowse link
G Fxn frataxin involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:9405681) TreeGrafter
MGI
PMID:9405681 GO_REF:0000118 NCBI chrNW_004936503:5,323,206...5,343,228 JBrowse link
G Glrx3 glutaredoxin 3 involved_in IEA Ensembl
TreeGrafter
GO_REF:0000107 GO_REF:0000118 NCBI chrNW_004936486:17,201,838...17,233,171
Ensembl chrNW_004936486:17,207,309...17,233,171
JBrowse link
G Hamp hepcidin antimicrobial peptide involved_in ISO
IEA
RGD
TreeGrafter
InterPro
Ensembl
PMID:14592944 GO_REF:0000002 GO_REF:0000107 GO_REF:0000118 RGD:1304454 NCBI chrNW_004936570:1,009,344...1,010,654
Ensembl chrNW_004936570:1,009,312...1,010,686
JBrowse link
G Hephl1 hephaestin like 1 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936674:778,160...846,119
Ensembl chrNW_004936674:778,160...846,119
JBrowse link
G Hfe homeostatic iron regulator involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936671:1,940,079...1,947,574
Ensembl chrNW_004936671:1,940,101...1,947,580
JBrowse link
G Hif1a hypoxia inducible factor 1 subunit alpha involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:16787915) Ensembl
MGI
PMID:16787915 GO_REF:0000107 NCBI chrNW_004936495:5,770,988...5,816,157
Ensembl chrNW_004936495:5,770,669...5,816,157
JBrowse link
G Hjv hemojuvelin BMP co-receptor involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936867:742,539...747,035
Ensembl chrNW_004936867:742,501...746,930
JBrowse link
G Hmox1 heme oxygenase 1 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936492:5,042,353...5,049,216
Ensembl chrNW_004936492:5,042,330...5,049,311
JBrowse link
G Hpx hemopexin involved_in IEA InterPro GO_REF:0000002 NCBI chrNW_004936842:485,515...495,684
Ensembl chrNW_004936842:485,517...494,742
JBrowse link
G Ireb2 iron responsive element binding protein 2 involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:14726953), (PMID:15831703)
(PMID:11175792)
Ensembl
MGI
PMID:11175792 PMID:14726953 PMID:15831703 GO_REF:0000107 NCBI chrNW_004936471:36,547,552...36,601,327
Ensembl chrNW_004936471:36,547,500...36,600,636
JBrowse link
G Iscu iron-sulfur cluster assembly enzyme involved_in IEA Ensembl
TreeGrafter
GO_REF:0000107 GO_REF:0000118 NCBI chrNW_004936769:492,024...498,587
Ensembl chrNW_004936769:491,530...498,692
JBrowse link
G LOC101958683 ferritin heavy chain involved_in IEA InterPro
UniProt
GO_REF:0000002 GO_REF:0000043 NCBI chrNW_004936553:7,117,118...7,117,669 JBrowse link
G LOC101964946 ferritin heavy chain-like involved_in IEA InterPro
UniProt
GO_REF:0000002 GO_REF:0000043 NCBI chrNW_004936502:1,857,103...1,857,678 JBrowse link
G LOC101966789 V-type proton ATPase catalytic subunit A-like involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936488:17,223,190...17,224,731
Ensembl chrNW_004936536:1,257,990...1,312,530
JBrowse link
G LOC101968635 cytochrome b561 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936541:4,123,187...4,130,819
Ensembl chrNW_004936541:4,123,202...4,132,835
JBrowse link
G LOC101968723 ferritin heavy chain-like involved_in IEA InterPro
UniProt
GO_REF:0000002 GO_REF:0000043 NCBI chrNW_004936502:4,362,737...4,363,288 JBrowse link
G LOC101970831 serotransferrin involved_in IEA InterPro
Ensembl
GO_REF:0000002 GO_REF:0000107 NCBI chrNW_004936529:6,917,762...6,947,512
Ensembl chrNW_004936529:6,855,958...6,947,394
JBrowse link
G LOC101972941 ferritin heavy chain involved_in IEA InterPro
UniProt
GO_REF:0000002 GO_REF:0000043 NCBI chrNW_004937483:12,972...13,859 JBrowse link
G LOC101974571 cytochrome b ascorbate-dependent protein 3 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936581:1,685,876...1,696,159
Ensembl chrNW_004936581:1,685,876...1,696,173
JBrowse link
G LOC101976046 cytochrome b reductase 1 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936509:1,770,931...1,797,442
Ensembl chrNW_004936509:1,770,477...1,800,619
JBrowse link
G LOC120884499 ferritin, heavy subunit-like involved_in IEA InterPro
UniProt
GO_REF:0000002 GO_REF:0000043
G LOC120886140 ferritin light chain-like involved_in IEA InterPro
UniProt
GO_REF:0000002 GO_REF:0000043
G LOC120890581 frataxin, mitochondrial-like involved_in IEA InterPro
TreeGrafter
UniProt
GO_REF:0000002 GO_REF:0000043 GO_REF:0000118
G Meltf melanotransferrin NOT|acts_upstream_of_or_within ISO (PMID:16291590) MGI PMID:16291590 NCBI chrNW_004936833:853,925...875,069
Ensembl chrNW_004936833:853,007...875,547
JBrowse link
G Mon1a MON1 homolog A, secretory trafficking associated acts_upstream_of_or_within ISO (PMID:17632513) MGI PMID:17632513 NCBI chrNW_004936529:1,513,796...1,527,121
Ensembl chrNW_004936529:1,513,753...1,527,506
JBrowse link
G Myc MYC proto-oncogene, bHLH transcription factor involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936470:20,480,844...20,485,955
Ensembl chrNW_004936470:20,480,829...20,485,965
JBrowse link
G Ncoa4 nuclear receptor coactivator 4 involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:25327288) Ensembl
MGI
InterPro
PMID:25327288 GO_REF:0000002 GO_REF:0000107 NCBI chrNW_004936728:376,915...402,539
Ensembl chrNW_004936728:376,852...402,539
JBrowse link
G Ndfip1 Nedd4 family interacting protein 1 involved_in ISO (PMID:18776082) UniProt PMID:18776082 NCBI chrNW_004936504:12,053,470...12,103,346 JBrowse link
G Neo1 neogenin 1 involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:20065295) Ensembl
MGI
PMID:20065295 GO_REF:0000107 NCBI chrNW_004936471:32,345,578...32,517,245
Ensembl chrNW_004936471:32,292,745...32,516,624
JBrowse link
G Nubp1 NUBP iron-sulfur cluster assembly factor 1, cytosolic involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936530:8,970,963...8,985,925
Ensembl chrNW_004936530:8,971,380...8,986,033
JBrowse link
G Picalm phosphatidylinositol binding clathrin assembly protein involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936498:13,785,638...13,885,931
Ensembl chrNW_004936498:13,784,886...13,886,167
JBrowse link
G Scara5 scavenger receptor class A member 5 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936675:763,467...868,021
Ensembl chrNW_004936675:765,378...863,843
JBrowse link
G Slc11a1 solute carrier family 11 member 1 involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:18456389), (PMID:19321419)
(PMID:11903051)
Ensembl
MGI
TreeGrafter
PMID:11903051 PMID:18456389 PMID:19321419 GO_REF:0000107 GO_REF:0000118 NCBI chrNW_004936569:888,309...895,991
Ensembl chrNW_004936569:887,742...895,977
JBrowse link
G Slc40a1 solute carrier family 40 member 1 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936506:8,396,593...8,415,069
Ensembl chrNW_004936506:8,396,912...8,416,374
JBrowse link
G Smad4 SMAD family member 4 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936497:12,242,869...12,278,012
Ensembl chrNW_004936497:12,249,140...12,278,123
JBrowse link
G Sod1 superoxide dismutase 1 involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:16377630) Ensembl
MGI
PMID:16377630 GO_REF:0000107 NCBI chrNW_004936500:10,345,154...10,352,873
Ensembl chrNW_004936500:10,345,154...10,352,867
JBrowse link
G Tfr2 transferrin receptor 2 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936543:667,570...681,872
Ensembl chrNW_004936543:668,157...682,174
JBrowse link
G Tfrc transferrin receptor involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:10192390) Ensembl
MGI
TreeGrafter
UniProt
PMID:10192390 GO_REF:0000104 GO_REF:0000107 GO_REF:0000118 NCBI chrNW_004936784:696,738...728,385
Ensembl chrNW_004936784:696,713...728,543
JBrowse link
G Tmem199 transmembrane protein 199 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936538:4,512,866...4,517,404
Ensembl chrNW_004936538:4,511,941...4,517,498
JBrowse link
G Tmprss6 transmembrane serine protease 6 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936492:3,819,347...3,848,372
Ensembl chrNW_004936492:3,819,309...3,848,075
JBrowse link
G Ttc7a tetratricopeptide repeat domain 7A involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:15155459) Ensembl
MGI
PMID:15155459 GO_REF:0000107 NCBI chrNW_004936508:5,275,779...5,390,224
Ensembl chrNW_004936508:5,275,758...5,390,223
JBrowse link
cellular response to iron ion starvation term browser
Symbol Object Name Qualifiers Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Hfe homeostatic iron regulator ISO RGD PMID:16208485 RGD:1582698 NCBI chrNW_004936671:1,940,079...1,947,574
Ensembl chrNW_004936671:1,940,101...1,947,580
JBrowse link
endocytic iron import into cell term browser
Symbol Object Name Qualifiers Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Tfr2 transferrin receptor 2 involved_in IEA Ensembl
TreeGrafter
GO_REF:0000107 GO_REF:0000118 NCBI chrNW_004936543:667,570...681,872
Ensembl chrNW_004936543:668,157...682,174
JBrowse link
intracellular sequestering of iron ion term browser
Symbol Object Name Qualifiers Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Bdh2 3-hydroxybutyrate dehydrogenase 2 acts_upstream_of_positive_effect ISO (MGI:4820913|PMID:20550936) UniProt PMID:20550936 MGI:4820913 NCBI chrNW_004936520:278,467...304,525
Ensembl chrNW_004936520:278,435...304,770
JBrowse link
G Fth1 ferritin heavy chain 1 involved_in IEA TreeGrafter GO_REF:0000118 NCBI chrNW_004936581:1,118,905...1,120,592 JBrowse link
G Ftl ferritin light chain involved_in IEA TreeGrafter GO_REF:0000118 NCBI chrNW_004936664:2,976,325...2,977,878
Ensembl chrNW_004936664:2,976,314...2,977,877
JBrowse link
G Ftmt ferritin mitochondrial involved_in IEA TreeGrafter GO_REF:0000118 NCBI chrNW_004936575:2,077,732...2,078,445
Ensembl chrNW_004936575:2,077,732...2,078,445
JBrowse link
G LOC101958683 ferritin heavy chain involved_in IEA TreeGrafter GO_REF:0000118 NCBI chrNW_004936553:7,117,118...7,117,669 JBrowse link
G LOC101964946 ferritin heavy chain-like involved_in IEA TreeGrafter GO_REF:0000118 NCBI chrNW_004936502:1,857,103...1,857,678 JBrowse link
G LOC101968723 ferritin heavy chain-like involved_in IEA TreeGrafter GO_REF:0000118 NCBI chrNW_004936502:4,362,737...4,363,288 JBrowse link
G LOC101972941 ferritin heavy chain involved_in IEA TreeGrafter GO_REF:0000118 NCBI chrNW_004937483:12,972...13,859 JBrowse link
G LOC120884499 ferritin, heavy subunit-like involved_in IEA TreeGrafter GO_REF:0000118
G LOC120886140 ferritin light chain-like involved_in IEA TreeGrafter GO_REF:0000118
iron import into cell term browser
Symbol Object Name Qualifiers Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Slc11a2 solute carrier family 11 member 2 involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:11739192) Ensembl
MGI
TreeGrafter
PMID:11739192 GO_REF:0000107 GO_REF:0000118 NCBI chrNW_004936512:8,590,302...8,622,121
Ensembl chrNW_004936512:8,586,262...8,623,597
JBrowse link
G Slc39a14 solute carrier family 39 member 14 involved_in ISO (MGI:6392986|PMID:20682781)
(PMID:20682781)
UniProt PMID:20682781 MGI:6392986 NCBI chrNW_004939045:1...7,491 JBrowse link
G Steap3 STEAP3 metalloreductase acts_upstream_of_or_within ISO (PMID:16609065) MGI PMID:16609065 NCBI chrNW_004936469:51,084,250...51,121,738
Ensembl chrNW_004936469:51,054,517...51,126,664
JBrowse link
G Steap4 STEAP4 metalloreductase involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:16609065) Ensembl
MGI
PMID:16609065 GO_REF:0000107 NCBI chrNW_004936763:645,910...671,674
Ensembl chrNW_004936763:645,858...670,863
JBrowse link
iron ion import across plasma membrane term browser
Symbol Object Name Qualifiers Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Slc39a8 solute carrier family 39 member 8 involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936520:961,376...1,036,801
Ensembl chrNW_004936520:962,756...1,037,274
JBrowse link
G Steap2 STEAP2 metalloreductase involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:16609065) Ensembl
MGI
PMID:16609065 GO_REF:0000107 NCBI chrNW_004936621:3,784,628...3,806,787
Ensembl chrNW_004936621:3,779,745...3,806,851
JBrowse link
negative regulation of iron ion import across plasma membrane term browser
Symbol Object Name Qualifiers Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Iscu iron-sulfur cluster assembly enzyme involved_in IEA Ensembl GO_REF:0000107 NCBI chrNW_004936769:492,024...498,587
Ensembl chrNW_004936769:491,530...498,692
JBrowse link
positive regulation of iron ion import across plasma membrane term browser
Symbol Object Name Qualifiers Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Ifng interferon gamma involved_in ISO (MGI:6304699|PMID:29061364) ARUK-UCL PMID:29061364 MGI:6304699 NCBI chrNW_004936545:6,139,130...6,144,543
Ensembl chrNW_004936545:6,139,116...6,148,452
JBrowse link
G Lcn2 lipocalin 2 ISO RGD PMID:25557118 RGD:126790477 NCBI chrNW_004936487:15,721,752...15,725,396
Ensembl chrNW_004936487:15,721,684...15,728,221
JBrowse link
sequestering of iron ion term browser
Symbol Object Name Qualifiers Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Naglu N-acetyl-alpha-glucosaminidase involved_in
acts_upstream_of_or_within
IEA
ISO
(PMID:29624734) Ensembl
MGI
PMID:29624734 GO_REF:0000107 NCBI chrNW_004936490:17,305,033...17,312,167
Ensembl chrNW_004936490:17,304,586...17,314,521
JBrowse link
siderophore-dependent iron import into cell term browser
Symbol Object Name Qualifiers Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Abcb1 ATP binding cassette subfamily B member 1 involved_in IEA GOC GO_REF:0000108 NCBI chrNW_004936763:1,225,355...1,308,257
Ensembl chrNW_004936763:1,226,482...1,297,427
JBrowse link
G Abcb4 ATP binding cassette subfamily B member 4 involved_in IEA GOC GO_REF:0000108 NCBI chrNW_004936763:1,339,849...1,415,528
Ensembl chrNW_004936763:1,339,824...1,415,586
JBrowse link

Term paths to the root
Path 1
Term Annotations click to browse term
  biological_process 15969
    homeostatic process 1793
      chemical homeostasis 1096
        inorganic ion homeostasis 537
          intracellular iron ion homeostasis 74
            cellular response to iron ion starvation + 1
            iron import into cell + 12
            sequestering of iron ion + 11
Path 2
Term Annotations click to browse term
  biological_process 15969
    homeostatic process 1793
      chemical homeostasis 1096
        monoatomic ion homeostasis 611
          intracellular monoatomic ion homeostasis 538
            intracellular monoatomic cation homeostasis 527
              intracellular iron ion homeostasis 74
                cellular response to iron ion starvation + 1
                iron import into cell + 12
                sequestering of iron ion + 11
paths to the root