ID FBX6_HUMAN Reviewed; 293 AA. AC Q9NRD1; B1AK42; B2RC88; Q9UKT3; DT 01-NOV-2002, integrated into UniProtKB/Swiss-Prot. DT 01-OCT-2000, sequence version 1. DT 10-JUN-2026, entry version 192. DE RecName: Full=F-box only protein 6; DE AltName: Full=F-box protein that recognizes sugar chains 2; DE AltName: Full=F-box/G-domain protein 2; GN Name=FBXO6; Synonyms=FBG2, FBS2, FBX6; OS Homo sapiens (Human). OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; OC Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; OC Homo. OX NCBI_TaxID=9606; RN [1] RP NUCLEOTIDE SEQUENCE [MRNA]. RX PubMed=10531035; DOI=10.1016/s0960-9822(00)80020-2; RA Cenciarelli C., Chiaur D.S., Guardavaccaro D., Parks W., Vidal M., RA Pagano M.; RT "Identification of a family of human F-box proteins."; RL Curr. Biol. 9:1177-1179(1999). RN [2] RP NUCLEOTIDE SEQUENCE [MRNA]. RX PubMed=10945468; DOI=10.1006/geno.2000.6211; RA Ilyin G.P., Rialland M., Pigeon C., Guguen-Guillouzo C.; RT "cDNA cloning and expression analysis of new members of the mammalian F-box RT protein family."; RL Genomics 67:40-47(2000). RN [3] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. RC TISSUE=Lung; RX PubMed=14702039; DOI=10.1038/ng1285; RA Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., RA Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., RA Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S., RA Yamamoto J., Saito K., Kawai Y., Isono Y., Nakamura Y., Nagahari K., RA Murakami K., Yasuda T., Iwayanagi T., Wagatsuma M., Shiratori A., Sudo H., RA Hosoiri T., Kaku Y., Kodaira H., Kondo H., Sugawara M., Takahashi M., RA Kanda K., Yokoi T., Furuya T., Kikkawa E., Omura Y., Abe K., Kamihara K., RA Katsuta N., Sato K., Tanikawa M., Yamazaki M., Ninomiya K., Ishibashi T., RA Yamashita H., Murakawa K., Fujimori K., Tanai H., Kimata M., Watanabe M., RA Hiraoka S., Chiba Y., Ishida S., Ono Y., Takiguchi S., Watanabe S., RA Yosida M., Hotuta T., Kusano J., Kanehori K., Takahashi-Fujii A., Hara H., RA Tanase T.-O., Nomura Y., Togiya S., Komai F., Hara R., Takeuchi K., RA Arita M., Imose N., Musashino K., Yuuki H., Oshima A., Sasaki N., RA Aotsuka S., Yoshikawa Y., Matsunawa H., Ichihara T., Shiohata N., Sano S., RA Moriya S., Momiyama H., Satoh N., Takami S., Terashima Y., Suzuki O., RA Nakagawa S., Senoh A., Mizoguchi H., Goto Y., Shimizu F., Wakebe H., RA Hishigaki H., Watanabe T., Sugiyama A., Takemoto M., Kawakami B., RA Yamazaki M., Watanabe K., Kumagai A., Itakura S., Fukuzumi Y., Fujimori Y., RA Komiyama M., Tashiro H., Tanigami A., Fujiwara T., Ono T., Yamada K., RA Fujii Y., Ozaki K., Hirao M., Ohmori Y., Kawabata A., Hikiji T., RA Kobatake N., Inagaki H., Ikema Y., Okamoto S., Okitani R., Kawakami T., RA Noguchi S., Itoh T., Shigeta K., Senba T., Matsumura K., Nakajima Y., RA Mizuno T., Morinaga M., Sasaki M., Togashi T., Oyama M., Hata H., RA Watanabe M., Komatsu T., Mizushima-Sugano J., Satoh T., Shirai Y., RA Takahashi Y., Nakagawa K., Okumura K., Nagase T., Nomura N., Kikuchi H., RA Masuho Y., Yamashita R., Nakai K., Yada T., Nakamura Y., Ohara O., RA Isogai T., Sugano S.; RT "Complete sequencing and characterization of 21,243 full-length human RT cDNAs."; RL Nat. Genet. 36:40-45(2004). RN [4] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RX PubMed=16710414; DOI=10.1038/nature04727; RA Gregory S.G., Barlow K.F., McLay K.E., Kaul R., Swarbreck D., Dunham A., RA Scott C.E., Howe K.L., Woodfine K., Spencer C.C.A., Jones M.C., Gillson C., RA Searle S., Zhou Y., Kokocinski F., McDonald L., Evans R., Phillips K., RA Atkinson A., Cooper R., Jones C., Hall R.E., Andrews T.D., Lloyd C., RA Ainscough R., Almeida J.P., Ambrose K.D., Anderson F., Andrew R.W., RA Ashwell R.I.S., Aubin K., Babbage A.K., Bagguley C.L., Bailey J., RA Beasley H., Bethel G., Bird C.P., Bray-Allen S., Brown J.Y., Brown A.J., RA Buckley D., Burton J., Bye J., Carder C., Chapman J.C., Clark S.Y., RA Clarke G., Clee C., Cobley V., Collier R.E., Corby N., Coville G.J., RA Davies J., Deadman R., Dunn M., Earthrowl M., Ellington A.G., Errington H., RA Frankish A., Frankland J., French L., Garner P., Garnett J., Gay L., RA Ghori M.R.J., Gibson R., Gilby L.M., Gillett W., Glithero R.J., RA Grafham D.V., Griffiths C., Griffiths-Jones S., Grocock R., Hammond S., RA Harrison E.S.I., Hart E., Haugen E., Heath P.D., Holmes S., Holt K., RA Howden P.J., Hunt A.R., Hunt S.E., Hunter G., Isherwood J., James R., RA Johnson C., Johnson D., Joy A., Kay M., Kershaw J.K., Kibukawa M., RA Kimberley A.M., King A., Knights A.J., Lad H., Laird G., Lawlor S., RA Leongamornlert D.A., Lloyd D.M., Loveland J., Lovell J., Lush M.J., RA Lyne R., Martin S., Mashreghi-Mohammadi M., Matthews L., Matthews N.S.W., RA McLaren S., Milne S., Mistry S., Moore M.J.F., Nickerson T., O'Dell C.N., RA Oliver K., Palmeiri A., Palmer S.A., Parker A., Patel D., Pearce A.V., RA Peck A.I., Pelan S., Phelps K., Phillimore B.J., Plumb R., Rajan J., RA Raymond C., Rouse G., Saenphimmachak C., Sehra H.K., Sheridan E., RA Shownkeen R., Sims S., Skuce C.D., Smith M., Steward C., Subramanian S., RA Sycamore N., Tracey A., Tromans A., Van Helmond Z., Wall M., Wallis J.M., RA White S., Whitehead S.L., Wilkinson J.E., Willey D.L., Williams H., RA Wilming L., Wray P.W., Wu Z., Coulson A., Vaudin M., Sulston J.E., RA Durbin R.M., Hubbard T., Wooster R., Dunham I., Carter N.P., McVean G., RA Ross M.T., Harrow J., Olson M.V., Beck S., Rogers J., Bentley D.R.; RT "The DNA sequence and biological annotation of human chromosome 1."; RL Nature 441:315-321(2006). RN [5] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RA Mural R.J., Istrail S., Sutton G.G., Florea L., Halpern A.L., Mobarry C.M., RA Lippert R., Walenz B., Shatkay H., Dew I., Miller J.R., Flanigan M.J., RA Edwards N.J., Bolanos R., Fasulo D., Halldorsson B.V., Hannenhalli S., RA Turner R., Yooseph S., Lu F., Nusskern D.R., Shue B.C., Zheng X.H., RA Zhong F., Delcher A.L., Huson D.H., Kravitz S.A., Mouchard L., Reinert K., RA Remington K.A., Clark A.G., Waterman M.S., Eichler E.E., Adams M.D., RA Hunkapiller M.W., Myers E.W., Venter J.C.; RL Submitted (JUL-2005) to the EMBL/GenBank/DDBJ databases. RN [6] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. RC TISSUE=Kidney; 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 [7] RP FUNCTION, SUGAR-BINDING, INTERACTION WITH CUL1, AND MUTAGENESIS OF RP 241-TYR-TRP-242. RX PubMed=18203720; DOI=10.1074/jbc.m709508200; RA Glenn K.A., Nelson R.F., Wen H.M., Mallinger A.J., Paulson H.L.; RT "Diversity in tissue expression, substrate binding, and SCF complex RT formation for a lectin family of ubiquitin ligases."; RL J. Biol. Chem. 283:12717-12729(2008). RN [8] RP FUNCTION, SUBCELLULAR LOCATION, IDENTIFICATION IN A SCF PROTEIN LIGASE RP COMPLEX, AND INTERACTION WITH CHEK1. RX PubMed=19716789; DOI=10.1016/j.molcel.2009.06.030; RA Zhang Y.-W., Brognard J., Coughlin C., You Z., Dolled-Filhart M., RA Aslanian A., Manning G., Abraham R.T., Hunter T.; RT "The F box protein Fbx6 regulates Chk1 stability and cellular sensitivity RT to replication stress."; RL Mol. Cell 35:442-453(2009). RN [9] RP IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. RX PubMed=21269460; DOI=10.1186/1752-0509-5-17; RA Burkard T.R., Planyavsky M., Kaupe I., Breitwieser F.P., Buerckstuemmer T., RA Bennett K.L., Superti-Furga G., Colinge J.; RT "Initial characterization of the human central proteome."; RL BMC Syst. Biol. 5:17-17(2011). RN [10] RP PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-258 AND SER-284, AND RP IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. RC TISSUE=Erythroleukemia; RX PubMed=23186163; DOI=10.1021/pr300630k; RA Zhou H., Di Palma S., Preisinger C., Peng M., Polat A.N., Heck A.J., RA Mohammed S.; RT "Toward a comprehensive characterization of a human cancer cell RT phosphoproteome."; RL J. Proteome Res. 12:260-271(2013). CC -!- FUNCTION: Substrate-recognition component of some SCF (SKP1-CUL1-F-box CC protein)-type E3 ubiquitin ligase complexes. Involved in endoplasmic CC reticulum-associated degradation pathway (ERAD) for misfolded lumenal CC proteins by recognizing and binding sugar chains on unfolded CC glycoproteins that are retrotranslocated into the cytosol and promoting CC their ubiquitination and subsequent degradation. Able to recognize and CC bind denatured glycoproteins, which are modified with not only high- CC mannose but also complex-type oligosaccharides. Also recognizes CC sulfated glycans. Also involved in DNA damage response by specifically CC recognizing activated CHEK1 (phosphorylated on 'Ser-345'), promoting CC its ubiquitination and degradation. Ubiquitination of CHEK1 is required CC to ensure that activated CHEK1 does not accumulate as cells progress CC through S phase, or when replication forks encounter transient CC impediments during normal DNA replication. CC {ECO:0000269|PubMed:18203720, ECO:0000269|PubMed:19716789}. CC -!- PATHWAY: Protein modification; protein ubiquitination. CC -!- SUBUNIT: Interacts with VCP (By similarity). Part of a SCF (SKP1- CC cullin-F-box) protein ligase complex. Interacts with CHEK1 and CUL1. CC {ECO:0000250, ECO:0000269|PubMed:18203720, CC ECO:0000269|PubMed:19716789}. CC -!- INTERACTION: CC Q9NRD1; Q13616: CUL1; NbExp=6; IntAct=EBI-3938499, EBI-359390; CC Q9NRD1; Q08380: LGALS3BP; NbExp=2; IntAct=EBI-3938499, EBI-354956; CC Q9NRD1; P63208: SKP1; NbExp=10; IntAct=EBI-3938499, EBI-307486; CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000269|PubMed:19716789}. CC -!- SEQUENCE CAUTION: CC Sequence=AAF04470.1; Type=Erroneous initiation; Evidence={ECO:0000305}; CC -!- WEB RESOURCE: Name=Functional Glycomics Gateway - Glycan Binding; CC Note=hFBG2; CC URL="http://www.functionalglycomics.org/glycomics/GBPServlet?&operationType=view&cbpId=cbp_hum_other_821"; 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; AF129536; AAF04470.1; ALT_INIT; mRNA. DR EMBL; AF233223; AAF67153.1; -; mRNA. DR EMBL; AK314989; BAG37485.1; -; mRNA. DR EMBL; AL031731; -; NOT_ANNOTATED_CDS; Genomic_DNA. DR EMBL; CH471130; EAW71696.1; -; Genomic_DNA. DR EMBL; BC020880; AAH20880.1; -; mRNA. DR CCDS; CCDS133.1; -. DR RefSeq; NP_060908.1; NM_018438.6. DR RefSeq; XP_005263505.1; XM_005263448.6. DR RefSeq; XP_005263506.1; XM_005263449.6. DR RefSeq; XP_005263508.1; XM_005263451.6. DR RefSeq; XP_011539534.1; XM_011541232.4. DR RefSeq; XP_054191929.1; XM_054335954.1. DR RefSeq; XP_054191930.1; XM_054335955.1. DR RefSeq; XP_054191931.1; XM_054335956.1. DR RefSeq; XP_054191932.1; XM_054335957.1. DR AlphaFoldDB; Q9NRD1; -. DR SMR; Q9NRD1; -. DR BioGRID; 117654; 736. DR ComplexPortal; CPX-7905; SCF E3 ubiquitin ligase complex, FBXO6 variant. DR CORUM; Q9NRD1; -. DR FunCoup; Q9NRD1; 671. DR IntAct; Q9NRD1; 158. DR MINT; Q9NRD1; -. DR STRING; 9606.ENSP00000365944; -. DR iPTMnet; Q9NRD1; -. DR PhosphoSitePlus; Q9NRD1; -. DR BioMuta; FBXO6; -. DR DMDM; 24636846; -. DR jPOST; Q9NRD1; -. DR MassIVE; Q9NRD1; -. DR PaxDb; 9606-ENSP00000365944; -. DR PeptideAtlas; Q9NRD1; -. DR ProteomicsDB; 82338; -. DR Pumba; Q9NRD1; -. DR Antibodypedia; 28155; 241 antibodies from 28 providers. DR DNASU; 26270; -. DR Ensembl; ENST00000376753.9; ENSP00000365944.4; ENSG00000116663.12. DR Ensembl; ENST00000907480.1; ENSP00000577539.1; ENSG00000116663.12. DR Ensembl; ENST00000907481.1; ENSP00000577540.1; ENSG00000116663.12. DR Ensembl; ENST00000907482.1; ENSP00000577541.1; ENSG00000116663.12. DR Ensembl; ENST00000907483.1; ENSP00000577542.1; ENSG00000116663.12. DR Ensembl; ENST00000907484.1; ENSP00000577543.1; ENSG00000116663.12. DR Ensembl; ENST00000961666.1; ENSP00000631725.1; ENSG00000116663.12. DR Ensembl; ENST00000961667.1; ENSP00000631726.1; ENSG00000116663.12. DR GeneID; 26270; -. DR KEGG; hsa:26270; -. DR MANE-Select; ENST00000376753.9; ENSP00000365944.4; NM_018438.6; NP_060908.1. DR UCSC; uc001aso.4; human. DR AGR; HGNC:13585; -. DR ClinPGx; PA28046; -. DR CTD; 26270; -. DR DisGeNET; 26270; -. DR GeneCards; FBXO6; -. DR HGNC; HGNC:13585; FBXO6. DR HPA; ENSG00000116663; Low tissue specificity. DR MIM; 605647; gene. DR OpenTargets; ENSG00000116663; -. DR VEuPathDB; HostDB:ENSG00000116663; -. DR eggNOG; ENOG502RZA6; Eukaryota. DR GeneTree; ENSGT00940000159980; -. DR HOGENOM; CLU_068548_0_0_1; -. DR InParanoid; Q9NRD1; -. DR OMA; HIFFQHG; -. DR OrthoDB; 1107553at2759; -. DR PAN-GO; Q9NRD1; 7 GO annotations based on evolutionary models. DR PhylomeDB; Q9NRD1; -. DR PathwayCommons; Q9NRD1; -. DR Reactome; R-HSA-390471; Association of TriC/CCT with target proteins during biosynthesis. DR Reactome; R-HSA-8951664; Neddylation. DR Reactome; R-HSA-983168; Antigen processing: Ubiquitination & Proteasome degradation. DR SignaLink; Q9NRD1; -. DR SIGNOR; Q9NRD1; -. DR UniPathway; UPA00143; -. DR Agora; ENSG00000116663; -. DR BioGRID-ORCS; 26270; 10 hits in 1213 CRISPR screens. DR ChiTaRS; FBXO6; human. DR GeneWiki; FBXO6; -. DR GenomeRNAi; 26270; -. DR Pharos; Q9NRD1; Tbio. DR PRO; PR:Q9NRD1; -. DR Proteomes; UP000005640; Chromosome 1. DR RNAct; Q9NRD1; protein. DR Bgee; ENSG00000116663; Expressed in granulocyte and 141 other cell types or tissues. DR ExpressionAtlas; Q9NRD1; baseline and differential. DR GO; GO:0005737; C:cytoplasm; IDA:UniProtKB. DR GO; GO:0005829; C:cytosol; TAS:Reactome. DR GO; GO:0044322; C:endoplasmic reticulum quality control compartment; IBA:GO_Central. DR GO; GO:0019005; C:SCF ubiquitin ligase complex; IDA:UniProtKB. DR GO; GO:0030246; F:carbohydrate binding; IEA:Ensembl. DR GO; GO:0061630; F:ubiquitin protein ligase activity; IEA:Ensembl. DR GO; GO:0000077; P:DNA damage checkpoint signaling; TAS:UniProtKB. DR GO; GO:0006281; P:DNA repair; TAS:UniProtKB. DR GO; GO:0036503; P:ERAD pathway; ISS:UniProtKB. DR GO; GO:0006516; P:glycoprotein catabolic process; IBA:GO_Central. DR GO; GO:0016567; P:protein ubiquitination; IEA:UniProtKB-UniPathway. DR GO; GO:0006508; P:proteolysis; TAS:ProtInc. DR GO; GO:0006986; P:response to unfolded protein; IEA:UniProtKB-KW. DR GO; GO:0031146; P:SCF-dependent proteasomal ubiquitin-dependent protein catabolic process; IDA:UniProtKB. DR CDD; cd22168; F-box_FBXO6-like; 1. DR FunFam; 2.60.120.260:FF:000012; F-box only protein 2; 1. DR FunFam; 1.20.1280.50:FF:000002; F-box only protein 44; 1. DR Gene3D; 1.20.1280.50; -; 1. DR Gene3D; 2.60.120.260; Galactose-binding domain-like; 1. DR InterPro; IPR007397; F-box-assoc_dom. DR InterPro; IPR036047; F-box-like_dom_sf. DR InterPro; IPR001810; F-box_dom. DR InterPro; IPR039752; F-box_only. DR InterPro; IPR008979; Galactose-bd-like_sf. DR PANTHER; PTHR12125:SF12; F-BOX ONLY PROTEIN 6; 1. DR PANTHER; PTHR12125; F-BOX ONLY PROTEIN 6-LIKE PROTEIN; 1. DR Pfam; PF12937; F-box-like; 1. DR Pfam; PF04300; FBA; 1. DR SMART; SM01198; FBA; 1. DR SMART; SM00256; FBOX; 1. DR SUPFAM; SSF81383; F-box domain; 1. DR SUPFAM; SSF49785; Galactose-binding domain-like; 1. DR PROSITE; PS51114; FBA; 1. DR PROSITE; PS50181; FBOX; 1. PE 1: Evidence at protein level; KW Cytoplasm; DNA damage; DNA repair; Phosphoprotein; KW Proteomics identification; Reference proteome; Ubl conjugation pathway; KW Unfolded protein response. FT CHAIN 1..293 FT /note="F-box only protein 6" FT /id="PRO_0000119882" FT DOMAIN 10..57 FT /note="F-box" FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00080" FT DOMAIN 78..259 FT /note="FBA" FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00482" FT REGION 261..285 FT /note="Disordered" FT /evidence="ECO:0000256|SAM:MobiDB-lite" FT COMPBIAS 261..271 FT /note="Polar residues" FT /evidence="ECO:0000256|SAM:MobiDB-lite" FT MOD_RES 258 FT /note="Phosphoserine" FT /evidence="ECO:0007744|PubMed:23186163" FT MOD_RES 284 FT /note="Phosphoserine" FT /evidence="ECO:0007744|PubMed:23186163" FT VARIANT 60 FT /note="R -> Q (in dbSNP:rs3125818)" FT /id="VAR_049039" FT VARIANT 201 FT /note="P -> T (in dbSNP:rs2294639)" FT /id="VAR_022158" FT MUTAGEN 241..242 FT /note="YW->AA: Abolishes interaction with glycosylated FT concanavalin-A in vitro." FT /evidence="ECO:0000269|PubMed:18203720" FT CONFLICT 18 FT /note="E -> D (in Ref. 1; AAF04470)" FT /evidence="ECO:0000305" FT CONFLICT 51 FT /note="M -> L (in Ref. 1; AAF04470)" FT /evidence="ECO:0000305" FT CONFLICT 61 FT /note="E -> K (in Ref. 1; AAF04470)" FT /evidence="ECO:0000305" FT CONFLICT 96 FT /note="E -> N (in Ref. 1; AAF04470)" FT /evidence="ECO:0000305" FT CONFLICT 114 FT /note="E -> D (in Ref. 1; AAF04470)" FT /evidence="ECO:0000305" FT CONFLICT 123 FT /note="D -> E (in Ref. 1; AAF04470)" FT /evidence="ECO:0000305" FT CONFLICT 132 FT /note="Y -> S (in Ref. 1; AAF04470)" FT /evidence="ECO:0000305" FT CONFLICT 139 FT /note="M -> L (in Ref. 1; AAF04470)" FT /evidence="ECO:0000305" FT CONFLICT 143..144 FT /note="SQ -> WE (in Ref. 1; AAF04470)" FT /evidence="ECO:0000305" FT CONFLICT 149..152 FT /note="VAEG -> LADR (in Ref. 1; AAF04470)" FT /evidence="ECO:0000305" FT CONFLICT 287 FT /note="R -> G (in Ref. 1; AAF04470)" FT /evidence="ECO:0000305" SQ SEQUENCE 293 AA; 33933 MW; EA4235CD9CCD80FF CRC64; MDAPHSKAAL DSINELPENI LLELFTHVPA RQLLLNCRLV CSLWRDLIDL MTLWKRKCLR EGFITKDWDQ PVADWKIFYF LRSLHRNLLR NPCAEEDMFA WQIDFNGGDR WKVESLPGAH GTDFPDPKVK KYFVTSYEMC LKSQLVDLVA EGYWEELLDT FRPDIVVKDW FAARADCGCT YQLKVQLASA DYFVLASFEP PPVTIQQWNN ATWTEVSYTF SDYPRGVRYI LFQHGGRDTQ YWAGWYGPRV TNSSIVVSPK MTRNQASSEA QPGQKHGQEE AAQSPYRAVV QIF //