ID FBXL5_MOUSE Reviewed; 690 AA. AC Q8C2S5; Q14CG1; Q3TAK6; Q3TWC9; Q3UC66; Q80XI5; Q8BGF5; Q8BNL3; Q8C3Q8; DT 03-OCT-2003, integrated into UniProtKB/Swiss-Prot. DT 03-OCT-2003, sequence version 2. DT 27-MAR-2024, entry version 159. DE RecName: Full=F-box/LRR-repeat protein 5; DE AltName: Full=F-box and leucine-rich repeat protein 5; GN Name=Fbxl5; OS Mus musculus (Mouse). OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; OC Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae; OC Murinae; Mus; Mus. OX NCBI_TaxID=10090; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 1; 3; 4 AND 5). RC STRAIN=C57BL/6J, and NOD; RC TISSUE=Bone marrow, Lung, Spleen, Testis, and Thymus; RX PubMed=16141072; DOI=10.1126/science.1112014; RA Carninci P., Kasukawa T., Katayama S., Gough J., Frith M.C., Maeda N., RA Oyama R., Ravasi T., Lenhard B., Wells C., Kodzius R., Shimokawa K., RA Bajic V.B., Brenner S.E., Batalov S., Forrest A.R., Zavolan M., Davis M.J., RA Wilming L.G., Aidinis V., Allen J.E., Ambesi-Impiombato A., Apweiler R., RA Aturaliya R.N., Bailey T.L., Bansal M., Baxter L., Beisel K.W., Bersano T., RA Bono H., Chalk A.M., Chiu K.P., Choudhary V., Christoffels A., RA Clutterbuck D.R., Crowe M.L., Dalla E., Dalrymple B.P., de Bono B., RA Della Gatta G., di Bernardo D., Down T., Engstrom P., Fagiolini M., RA Faulkner G., Fletcher C.F., Fukushima T., Furuno M., Futaki S., RA Gariboldi M., Georgii-Hemming P., Gingeras T.R., Gojobori T., Green R.E., RA Gustincich S., Harbers M., Hayashi Y., Hensch T.K., Hirokawa N., Hill D., RA Huminiecki L., Iacono M., Ikeo K., Iwama A., Ishikawa T., Jakt M., RA Kanapin A., Katoh M., Kawasawa Y., Kelso J., Kitamura H., Kitano H., RA Kollias G., Krishnan S.P., Kruger A., Kummerfeld S.K., Kurochkin I.V., RA Lareau L.F., Lazarevic D., Lipovich L., Liu J., Liuni S., McWilliam S., RA Madan Babu M., Madera M., Marchionni L., Matsuda H., Matsuzawa S., Miki H., RA Mignone F., Miyake S., Morris K., Mottagui-Tabar S., Mulder N., Nakano N., RA Nakauchi H., Ng P., Nilsson R., Nishiguchi S., Nishikawa S., Nori F., RA Ohara O., Okazaki Y., Orlando V., Pang K.C., Pavan W.J., Pavesi G., RA Pesole G., Petrovsky N., Piazza S., Reed J., Reid J.F., Ring B.Z., RA Ringwald M., Rost B., Ruan Y., Salzberg S.L., Sandelin A., Schneider C., RA Schoenbach C., Sekiguchi K., Semple C.A., Seno S., Sessa L., Sheng Y., RA Shibata Y., Shimada H., Shimada K., Silva D., Sinclair B., Sperling S., RA Stupka E., Sugiura K., Sultana R., Takenaka Y., Taki K., Tammoja K., RA Tan S.L., Tang S., Taylor M.S., Tegner J., Teichmann S.A., Ueda H.R., RA van Nimwegen E., Verardo R., Wei C.L., Yagi K., Yamanishi H., RA Zabarovsky E., Zhu S., Zimmer A., Hide W., Bult C., Grimmond S.M., RA Teasdale R.D., Liu E.T., Brusic V., Quackenbush J., Wahlestedt C., RA Mattick J.S., Hume D.A., Kai C., Sasaki D., Tomaru Y., Fukuda S., RA Kanamori-Katayama M., Suzuki M., Aoki J., Arakawa T., Iida J., Imamura K., RA Itoh M., Kato T., Kawaji H., Kawagashira N., Kawashima T., Kojima M., RA Kondo S., Konno H., Nakano K., Ninomiya N., Nishio T., Okada M., Plessy C., RA Shibata K., Shiraki T., Suzuki S., Tagami M., Waki K., Watahiki A., RA Okamura-Oho Y., Suzuki H., Kawai J., Hayashizaki Y.; RT "The transcriptional landscape of the mammalian genome."; RL Science 309:1559-1563(2005). RN [2] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 2 AND 3). RC TISSUE=Eye; RX PubMed=15489334; DOI=10.1101/gr.2596504; RG The MGC Project Team; RT "The status, quality, and expansion of the NIH full-length cDNA project: RT the Mammalian Gene Collection (MGC)."; RL Genome Res. 14:2121-2127(2004). RN [3] RP FUNCTION, AND DISRUPTION PHENOTYPE. RX PubMed=21907140; DOI=10.1016/j.cmet.2011.07.011; RA Moroishi T., Nishiyama M., Takeda Y., Iwai K., Nakayama K.I.; RT "The FBXL5-IRP2 axis is integral to control of iron metabolism in vivo."; RL Cell Metab. 14:339-351(2011). RN [4] RP FUNCTION, DISRUPTION PHENOTYPE, AND TISSUE SPECIFICITY. RX PubMed=23135277; DOI=10.1074/jbc.m112.426171; RA Ruiz J.C., Walker S.D., Anderson S.A., Eisenstein R.S., Bruick R.K.; RT "F-box and leucine-rich repeat protein 5 (FBXL5) is required for RT maintenance of cellular and systemic iron homeostasis."; RL J. Biol. Chem. 288:552-560(2013). CC -!- FUNCTION: Component of some SCF (SKP1-cullin-F-box) protein ligase CC complex that plays a central role in iron homeostasis by promoting the CC ubiquitination and subsequent degradation of IREB2/IRP2 CC (PubMed:21907140, PubMed:23135277). The C-terminal domain of FBXL5 CC contains a redox-sensitive [2Fe-2S] cluster that, upon oxidation, CC promotes binding to IRP2 to effect its oxygen-dependent degradation. CC Under iron deficiency conditions, the N-terminal hemerythrin-like (Hr) CC region, which contains a diiron metal center, cannot bind iron and CC undergoes conformational changes that destabilize the FBXL5 protein and CC cause its ubiquitination and degradation. When intracellular iron CC levels start rising, the Hr region is stabilized. Additional increases CC in iron levels facilitate the assembly and incorporation of a redox CC active [2Fe-2S] cluster in the C-terminal domain. Only when oxygen CC level is high enough to maintain the cluster in its oxidized state can CC FBXL5 recruit IRP2 as a substrate for polyubiquination and degradation. CC Promotes ubiquitination and subsequent degradation of the dynactin CC complex component DCTN1. Within the nucleus, promotes the CC ubiquitination of SNAI1; preventing its interaction with DNA and CC promoting its degradation. Negatively regulates DNA damage response by CC mediating the ubiquitin-proteasome degradation of the DNA repair CC protein NABP2 (By similarity). {ECO:0000250|UniProtKB:Q9UKA1, CC ECO:0000269|PubMed:21907140, ECO:0000269|PubMed:23135277}. CC -!- COFACTOR: CC Name=[2Fe-2S] cluster; Xref=ChEBI:CHEBI:190135; CC Evidence={ECO:0000250|UniProtKB:Q9UKA1}; CC -!- ACTIVITY REGULATION: An iron-sulfur cluster promotes IRP2 CC polyubiquitination and degradation in response to both iron and oxygen CC concentrations. {ECO:0000250|UniProtKB:Q9UKA1}. CC -!- PATHWAY: Protein modification; protein ubiquitination. CC -!- SUBUNIT: Part of a SCF (SKP1-cullin-F-box) protein ligase complex. CC Interacts with ACO1/IRP1, IREB2/IRP2; the interaction depends on the CC [2Fe-2S] cluster. Interacts with DCTN1/p150-glued. CC {ECO:0000250|UniProtKB:Q9UKA1}. CC -!- SUBCELLULAR LOCATION: Cytoplasm, perinuclear region CC {ECO:0000250|UniProtKB:Q9UKA1}. Nucleus {ECO:0000250|UniProtKB:Q9UKA1}. CC -!- ALTERNATIVE PRODUCTS: CC Event=Alternative splicing; Named isoforms=5; CC Name=1; CC IsoId=Q8C2S5-1; Sequence=Displayed; CC Name=2; CC IsoId=Q8C2S5-2; Sequence=VSP_008418; CC Name=3; CC IsoId=Q8C2S5-3; Sequence=VSP_008419, VSP_008420; CC Name=4; CC IsoId=Q8C2S5-4; Sequence=VSP_038530; CC Name=5; CC IsoId=Q8C2S5-5; Sequence=VSP_038529, VSP_008419, VSP_008420; CC -!- TISSUE SPECIFICITY: Ubiquitously expressed. Highly expressed in early CC embryogenesis with expression decreasing as the embryo progresses CC through development (E11 and E15). {ECO:0000269|PubMed:23135277}. CC -!- DOMAIN: The hemerythrin-like region acts as an oxygen and iron sensor CC by binding oxygen through a diiron metal-center. In absence of oxygen CC and iron, the protein is ubiquitinated and degraded (By similarity). CC {ECO:0000250}. CC -!- PTM: Polybiquitinated upon iron and oxygen depletion, leading to its CC degradation by the proteasome. Ubiquitination is regulated by the CC hemerythrin-like region that acts as an oxygen and iron sensor. CC Undergoes constitutive ubiquitin-dependent degradation at the steady CC state by HERC2. {ECO:0000250|UniProtKB:Q9UKA1}. CC -!- DISRUPTION PHENOTYPE: FBXL5-deletion mice die during early CC embryogenesis (PubMed:23135277, PubMed:21907140). FBXL5-null embryos CC accumulate excess ferrous iron and are exposed to damaging levels of CC oxidative stress (PubMed:21907140). Simultaneous inactivation of both CC the FBXL5 and IRP2 genes is sufficient to rescue embryonic lethality CC (PubMed:21907140). {ECO:0000269|PubMed:21907140, CC ECO:0000269|PubMed:23135277}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; AK029957; BAC26698.1; -; mRNA. DR EMBL; AK041497; BAC30964.1; -; mRNA. DR EMBL; AK082931; BAC38698.1; -; mRNA. DR EMBL; AK085100; BAC39366.1; -; mRNA. DR EMBL; AK088067; BAC40126.1; -; mRNA. DR EMBL; AK150664; BAE29748.1; -; mRNA. DR EMBL; AK159744; BAE35337.1; -; mRNA. DR EMBL; AK171783; BAE42662.1; -; mRNA. DR EMBL; BC047214; AAH47214.1; -; mRNA. DR EMBL; BC113798; AAI13799.1; -; mRNA. DR CCDS; CCDS19263.1; -. [Q8C2S5-3] DR CCDS; CCDS51489.1; -. [Q8C2S5-1] DR RefSeq; NP_001153435.1; NM_001159963.1. [Q8C2S5-1] DR RefSeq; NP_848844.1; NM_178729.4. [Q8C2S5-3] DR AlphaFoldDB; Q8C2S5; -. DR SMR; Q8C2S5; -. DR BioGRID; 232476; 3. DR STRING; 10090.ENSMUSP00000045792; -. DR PhosphoSitePlus; Q8C2S5; -. DR PaxDb; 10090-ENSMUSP00000045792; -. DR Antibodypedia; 9778; 243 antibodies from 28 providers. DR Ensembl; ENSMUST00000047857.16; ENSMUSP00000045792.10; ENSMUSG00000039753.17. [Q8C2S5-1] DR Ensembl; ENSMUST00000087465.11; ENSMUSP00000084733.5; ENSMUSG00000039753.17. [Q8C2S5-3] DR Ensembl; ENSMUST00000114047.10; ENSMUSP00000109681.4; ENSMUSG00000039753.17. [Q8C2S5-2] DR Ensembl; ENSMUST00000121736.6; ENSMUSP00000112444.2; ENSMUSG00000039753.17. [Q8C2S5-5] DR Ensembl; ENSMUST00000196483.5; ENSMUSP00000143703.2; ENSMUSG00000039753.17. [Q8C2S5-4] DR GeneID; 242960; -. DR KEGG; mmu:242960; -. DR UCSC; uc008xhu.2; mouse. [Q8C2S5-1] DR UCSC; uc008xhv.2; mouse. [Q8C2S5-4] DR UCSC; uc008xhw.2; mouse. [Q8C2S5-3] DR UCSC; uc008xhx.2; mouse. [Q8C2S5-5] DR AGR; MGI:2152883; -. DR CTD; 26234; -. DR MGI; MGI:2152883; Fbxl5. DR VEuPathDB; HostDB:ENSMUSG00000039753; -. DR eggNOG; ENOG502QS5I; Eukaryota. DR GeneTree; ENSGT00390000006172; -. DR HOGENOM; CLU_017503_0_0_1; -. DR InParanoid; Q8C2S5; -. DR OMA; GEMFCGH; -. DR OrthoDB; 2913997at2759; -. DR PhylomeDB; Q8C2S5; -. DR TreeFam; TF331105; -. DR Reactome; R-MMU-8951664; Neddylation. DR Reactome; R-MMU-917937; Iron uptake and transport. DR Reactome; R-MMU-983168; Antigen processing: Ubiquitination & Proteasome degradation. DR UniPathway; UPA00143; -. DR BioGRID-ORCS; 242960; 8 hits in 77 CRISPR screens. DR ChiTaRS; Fbxl5; mouse. DR PRO; PR:Q8C2S5; -. DR Proteomes; UP000000589; Chromosome 5. DR RNAct; Q8C2S5; Protein. DR Bgee; ENSMUSG00000039753; Expressed in spermatocyte and 235 other cell types or tissues. DR ExpressionAtlas; Q8C2S5; baseline and differential. DR GO; GO:0005634; C:nucleus; IEA:UniProtKB-SubCell. DR GO; GO:0048471; C:perinuclear region of cytoplasm; ISS:UniProtKB. DR GO; GO:0019005; C:SCF ubiquitin ligase complex; ISS:UniProtKB. DR GO; GO:0005506; F:iron ion binding; ISS:UniProtKB. DR GO; GO:0051536; F:iron-sulfur cluster binding; IEA:UniProtKB-KW. DR GO; GO:0006879; P:intracellular iron ion homeostasis; ISS:UniProtKB. DR GO; GO:0060586; P:multicellular organismal-level iron ion homeostasis; IMP:MGI. DR GO; GO:0045732; P:positive regulation of protein catabolic process; IMP:MGI. DR GO; GO:0030163; P:protein catabolic process; IMP:MGI. DR GO; GO:0016567; P:protein ubiquitination; ISS:UniProtKB. DR GO; GO:0031146; P:SCF-dependent proteasomal ubiquitin-dependent protein catabolic process; ISS:UniProtKB. DR CDD; cd22118; F-box_FBXL5; 1. DR CDD; cd12109; Hr_FBXL5; 1. DR Gene3D; 1.20.1280.50; -; 1. DR Gene3D; 1.20.120.520; nmb1532 protein domain like; 1. DR Gene3D; 3.80.10.10; Ribonuclease Inhibitor; 2. DR InterPro; IPR036047; F-box-like_dom_sf. DR InterPro; IPR001810; F-box_dom. DR InterPro; IPR012312; Hemerythrin-like. DR InterPro; IPR045808; Hr_FBXL5. DR InterPro; IPR001611; Leu-rich_rpt. DR InterPro; IPR006553; Leu-rich_rpt_Cys-con_subtyp. DR InterPro; IPR032675; LRR_dom_sf. DR PANTHER; PTHR13318:SF19; F-BOX_LRR-REPEAT PROTEIN 5; 1. DR PANTHER; PTHR13318; UNCHARACTERIZED; 1. DR Pfam; PF12937; F-box-like; 1. DR Pfam; PF01814; Hemerythrin; 1. DR Pfam; PF13516; LRR_6; 2. DR SMART; SM00256; FBOX; 1. DR SMART; SM00367; LRR_CC; 4. DR SUPFAM; SSF81383; F-box domain; 1. DR SUPFAM; SSF52047; RNI-like; 1. DR PROSITE; PS50181; FBOX; 1. DR Genevisible; Q8C2S5; MM. PE 2: Evidence at transcript level; KW Alternative splicing; Cytoplasm; Iron; Iron-sulfur; Leucine-rich repeat; KW Metal-binding; Nucleus; Reference proteome; Repeat; Ubl conjugation; KW Ubl conjugation pathway. FT CHAIN 1..690 FT /note="F-box/LRR-repeat protein 5" FT /id="PRO_0000119846" FT DOMAIN 202..248 FT /note="F-box" FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00080" FT REPEAT 340..364 FT /note="LRR 1" FT REPEAT 365..392 FT /note="LRR 2" FT REPEAT 393..418 FT /note="LRR 3" FT REPEAT 478..507 FT /note="LRR 4" FT REPEAT 575..606 FT /note="LRR 5" FT REPEAT 607..634 FT /note="LRR 6" FT REPEAT 635..660 FT /note="LRR 7" FT REGION 1..159 FT /note="Hemerythrin-like" FT /evidence="ECO:0000250|UniProtKB:Q9UKA1" FT BINDING 15 FT /ligand="Fe(3+)" FT /ligand_id="ChEBI:CHEBI:29034" FT /ligand_label="1" FT /evidence="ECO:0000250|UniProtKB:Q9UKA1" FT BINDING 57 FT /ligand="Fe(3+)" FT /ligand_id="ChEBI:CHEBI:29034" FT /ligand_label="1" FT /evidence="ECO:0000250|UniProtKB:Q9UKA1" FT BINDING 58 FT /ligand="Fe(3+)" FT /ligand_id="ChEBI:CHEBI:29034" FT /ligand_label="2" FT /evidence="ECO:0000250|UniProtKB:Q9UKA1" FT BINDING 61 FT /ligand="Fe(3+)" FT /ligand_id="ChEBI:CHEBI:29034" FT /ligand_label="1" FT /evidence="ECO:0000250|UniProtKB:Q9UKA1" FT BINDING 61 FT /ligand="Fe(3+)" FT /ligand_id="ChEBI:CHEBI:29034" FT /ligand_label="2" FT /evidence="ECO:0000250|UniProtKB:Q9UKA1" FT BINDING 80 FT /ligand="Fe(3+)" FT /ligand_id="ChEBI:CHEBI:29034" FT /ligand_label="2" FT /evidence="ECO:0000250|UniProtKB:Q9UKA1" FT BINDING 126 FT /ligand="Fe(3+)" FT /ligand_id="ChEBI:CHEBI:29034" FT /ligand_label="2" FT /evidence="ECO:0000250|UniProtKB:Q9UKA1" FT BINDING 130 FT /ligand="Fe(3+)" FT /ligand_id="ChEBI:CHEBI:29034" FT /ligand_label="1" FT /evidence="ECO:0000250|UniProtKB:Q9UKA1" FT BINDING 130 FT /ligand="Fe(3+)" FT /ligand_id="ChEBI:CHEBI:29034" FT /ligand_label="2" FT /evidence="ECO:0000250|UniProtKB:Q9UKA1" FT BINDING 661 FT /ligand="[2Fe-2S] cluster" FT /ligand_id="ChEBI:CHEBI:190135" FT /evidence="ECO:0000250|UniProtKB:Q9UKA1" FT BINDING 675 FT /ligand="[2Fe-2S] cluster" FT /ligand_id="ChEBI:CHEBI:190135" FT /evidence="ECO:0000250|UniProtKB:Q9UKA1" FT BINDING 685 FT /ligand="[2Fe-2S] cluster" FT /ligand_id="ChEBI:CHEBI:190135" FT /evidence="ECO:0000250|UniProtKB:Q9UKA1" FT BINDING 686 FT /ligand="[2Fe-2S] cluster" FT /ligand_id="ChEBI:CHEBI:190135" FT /evidence="ECO:0000250|UniProtKB:Q9UKA1" FT VAR_SEQ 1..28 FT /note="MAPFPDEVDVFTAPHWRMKQLVGRYCDK -> MRNNQELKYEIKWKHLDCSV FT VE (in isoform 2)" FT /evidence="ECO:0000303|PubMed:15489334" FT /id="VSP_008418" FT VAR_SEQ 29..71 FT /note="Missing (in isoform 5)" FT /evidence="ECO:0000303|PubMed:16141072" FT /id="VSP_038529" FT VAR_SEQ 298 FT /note="Missing (in isoform 4)" FT /evidence="ECO:0000303|PubMed:16141072" FT /id="VSP_038530" FT VAR_SEQ 617..623 FT /note="ALTLGGG -> WVISPSC (in isoform 3 and isoform 5)" FT /evidence="ECO:0000303|PubMed:15489334, FT ECO:0000303|PubMed:16141072" FT /id="VSP_008419" FT VAR_SEQ 624..690 FT /note="Missing (in isoform 3 and isoform 5)" FT /evidence="ECO:0000303|PubMed:15489334, FT ECO:0000303|PubMed:16141072" FT /id="VSP_008420" FT CONFLICT 105 FT /note="Q -> R (in Ref. 1; BAC38698)" FT /evidence="ECO:0000305" FT CONFLICT 127 FT /note="M -> K (in Ref. 1; BAC40126)" FT /evidence="ECO:0000305" SQ SEQUENCE 690 AA; 77894 MW; 9558476AFB3ECCA0 CRC64; MAPFPDEVDV FTAPHWRMKQ LVGRYCDKLS KTNFSNNNDF RALLQSLYAT FKEFKMHEQI ENEYIIGLLQ QRSQTIYNVH SDNKLSEMLS LFEKGLKNVK NEYEQLNYAK QLKERLEAFT RDFLPHMKEE EEVFQPMLME YFTYEELKDI KKKVIAQHCS QKDTAELLRG LSLWNQAEER QKVLKYSVDE KADTEAEVSE HSTGITHLPP EVMLSIFSYL NPQELCRCSQ VSTKWSQLAK TGSLWKHLYP VHWARGDWYS GPATELDTEP DEEWVRNRKD ESRAFQEWDE DADIDESEES AEESVAISIA QMEKRVLHGL IHNVLPYVGT SVKTLVLAYS SAVSSKMVRQ ILELCPNLEH LDLTQTDISD SAFDSWSWLG CCQSLRHLDL SGCEKITDMA LEKISRALGV LTSHQSGFLK SAGKAASTPW TSKDITMPST TQYACLHNLT DKGIGEEIDN EHSWTEPVSS ESLTSPYVWM LDAEDLADIE DAVEWRHRNV ESLCVMETAS NFGCSSSGCY SKDIVGLRTS VCWQQHCASP AFAYCGHSFC CTGTALRTMT TLPATSAMCR KALRTTLPRG KDLIYFGSEK SDQETGRVLL FLSLSGCYQI TDHGLRALTL GGGLPYLEHL NLSGCLTVTG AGLQDLVSAC PSLNDEYFYY CDNINGPHAD TASGCQNLQC GFRACCRSGE //