ID HXK6_ORYSJ Reviewed; 506 AA. AC Q8LQ68; Q0JJF0; DT 25-JUL-2006, integrated into UniProtKB/Swiss-Prot. DT 01-OCT-2002, sequence version 1. DT 27-MAR-2024, entry version 127. DE RecName: Full=Hexokinase-6; DE EC=2.7.1.1 {ECO:0000305|PubMed:16552590}; DE AltName: Full=Hexokinase-2; GN Name=HXK6; Synonyms=HXK2; GN OrderedLocusNames=Os01g0742500, LOC_Os01g53930; ORFNames=P0439E07.19; OS Oryza sativa subsp. japonica (Rice). OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; OC Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; BOP clade; OC Oryzoideae; Oryzeae; Oryzinae; Oryza; Oryza sativa. OX NCBI_TaxID=39947; RN [1] RP NUCLEOTIDE SEQUENCE [MRNA], FUNCTION, TISSUE SPECIFICITY, DEVELOPMENTAL RP STAGE, INDUCTION, AND NOMENCLATURE. RC STRAIN=cv. Jinmi; RX PubMed=16552590; DOI=10.1007/s00425-006-0251-y; RA Cho J.-I., Ryoo N., Ko S., Lee S.-K., Lee J., Jung K.-H., Lee Y.-H., RA Bhoo S.H., Winderickx J., An G., Hahn T.-R., Jeon J.-S.; RT "Structure, expression, and functional analysis of the hexokinase gene RT family in rice (Oryza sativa L.)."; RL Planta 224:598-611(2006). RN [2] RP NUCLEOTIDE SEQUENCE [MRNA]. RC STRAIN=cv. Zhonghua 15; TISSUE=Flower; RA Wang Y.D., Cheng W., Wang X.S., Zhou X.J.; RT "The hexokinase gene family in rice."; RL Submitted (JAN-2005) to the EMBL/GenBank/DDBJ databases. RN [3] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=cv. Nipponbare; RX PubMed=12447438; DOI=10.1038/nature01184; RA Sasaki T., Matsumoto T., Yamamoto K., Sakata K., Baba T., Katayose Y., RA Wu J., Niimura Y., Cheng Z., Nagamura Y., Antonio B.A., Kanamori H., RA Hosokawa S., Masukawa M., Arikawa K., Chiden Y., Hayashi M., Okamoto M., RA Ando T., Aoki H., Arita K., Hamada M., Harada C., Hijishita S., Honda M., RA Ichikawa Y., Idonuma A., Iijima M., Ikeda M., Ikeno M., Ito S., Ito T., RA Ito Y., Ito Y., Iwabuchi A., Kamiya K., Karasawa W., Katagiri S., RA Kikuta A., Kobayashi N., Kono I., Machita K., Maehara T., Mizuno H., RA Mizubayashi T., Mukai Y., Nagasaki H., Nakashima M., Nakama Y., RA Nakamichi Y., Nakamura M., Namiki N., Negishi M., Ohta I., Ono N., Saji S., RA Sakai K., Shibata M., Shimokawa T., Shomura A., Song J., Takazaki Y., RA Terasawa K., Tsuji K., Waki K., Yamagata H., Yamane H., Yoshiki S., RA Yoshihara R., Yukawa K., Zhong H., Iwama H., Endo T., Ito H., Hahn J.H., RA Kim H.-I., Eun M.-Y., Yano M., Jiang J., Gojobori T.; RT "The genome sequence and structure of rice chromosome 1."; RL Nature 420:312-316(2002). RN [4] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=cv. Nipponbare; RX PubMed=16100779; DOI=10.1038/nature03895; RG International rice genome sequencing project (IRGSP); RT "The map-based sequence of the rice genome."; RL Nature 436:793-800(2005). RN [5] RP GENOME REANNOTATION. RC STRAIN=cv. Nipponbare; RX PubMed=18089549; DOI=10.1093/nar/gkm978; RG The rice annotation project (RAP); RT "The rice annotation project database (RAP-DB): 2008 update."; RL Nucleic Acids Res. 36:D1028-D1033(2008). RN [6] RP GENOME REANNOTATION. RC STRAIN=cv. Nipponbare; RX PubMed=24280374; DOI=10.1186/1939-8433-6-4; RA Kawahara Y., de la Bastide M., Hamilton J.P., Kanamori H., McCombie W.R., RA Ouyang S., Schwartz D.C., Tanaka T., Wu J., Zhou S., Childs K.L., RA Davidson R.M., Lin H., Quesada-Ocampo L., Vaillancourt B., Sakai H., RA Lee S.S., Kim J., Numa H., Itoh T., Buell C.R., Matsumoto T.; RT "Improvement of the Oryza sativa Nipponbare reference genome using next RT generation sequence and optical map data."; RL Rice 6:4-4(2013). RN [7] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. RC STRAIN=cv. Nipponbare; RX PubMed=12869764; DOI=10.1126/science.1081288; RG The rice full-length cDNA consortium; RT "Collection, mapping, and annotation of over 28,000 cDNA clones from RT japonica rice."; RL Science 301:376-379(2003). RN [8] RP FUNCTION, AND MUTAGENESIS OF GLY-112 AND SER-185. RX PubMed=19010999; DOI=10.1104/pp.108.131227; RA Cho J.I., Ryoo N., Eom J.S., Lee D.W., Kim H.B., Jeong S.W., Lee Y.H., RA Kwon Y.K., Cho M.H., Bhoo S.H., Hahn T.R., Park Y.I., Hwang I., Sheen J., RA Jeon J.S.; RT "Role of the rice hexokinases OsHXK5 and OsHXK6 as glucose sensors."; RL Plant Physiol. 149:745-759(2009). RN [9] RP X-RAY CRYSTALLOGRAPHY (2.84 ANGSTROMS) OF 45-506 IN COMPLEX WITH D-GLUCOSE. RA Matsudaira K., Mochizuki S., Yoshida H., Kamitori S., Akimitsu K.; RT "Crystal structure of Oryza sativa hexokinase 6."; RL Submitted (APR-2018) to the PDB data bank. RN [10] RP X-RAY CRYSTALLOGRAPHY (2.60 ANGSTROMS) OF 39-506 IN COMPLEX WITH D-GLUCOSE RP AND ADP. RX PubMed=31176485; DOI=10.1016/j.bbrc.2019.05.139; RA He C., Chen J., Wang H., Wan Y., Zhou J., Dan Z., Zeng Y., Xu W., Zhu Y., RA Huang W., Yin L.; RT "Crystal structures of rice hexokinase 6 with a series of substrates shed RT light on its enzymatic mechanism."; RL Biochem. Biophys. Res. Commun. 515:614-620(2019). CC -!- FUNCTION: Fructose and glucose phosphorylating enzyme CC (PubMed:16552590). Functions as a glucose sensor for plant growth and CC photosynthesis (PubMed:19010999). {ECO:0000269|PubMed:16552590, CC ECO:0000269|PubMed:19010999}. CC -!- CATALYTIC ACTIVITY: CC Reaction=ATP + D-hexose = ADP + D-hexose 6-phosphate + H(+); CC Xref=Rhea:RHEA:22740, ChEBI:CHEBI:4194, ChEBI:CHEBI:15378, CC ChEBI:CHEBI:30616, ChEBI:CHEBI:61567, ChEBI:CHEBI:456216; EC=2.7.1.1; CC Evidence={ECO:0000305|PubMed:16552590}; CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:22741; CC Evidence={ECO:0000305|PubMed:16552590}; CC -!- CATALYTIC ACTIVITY: CC Reaction=ATP + D-fructose = ADP + D-fructose 6-phosphate + H(+); CC Xref=Rhea:RHEA:16125, ChEBI:CHEBI:15378, ChEBI:CHEBI:30616, CC ChEBI:CHEBI:37721, ChEBI:CHEBI:61527, ChEBI:CHEBI:456216; EC=2.7.1.1; CC Evidence={ECO:0000305|PubMed:16552590}; CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:16126; CC Evidence={ECO:0000305|PubMed:16552590}; CC -!- CATALYTIC ACTIVITY: CC Reaction=ATP + D-glucose = ADP + D-glucose 6-phosphate + H(+); CC Xref=Rhea:RHEA:17825, ChEBI:CHEBI:4167, ChEBI:CHEBI:15378, CC ChEBI:CHEBI:30616, ChEBI:CHEBI:61548, ChEBI:CHEBI:456216; EC=2.7.1.1; CC Evidence={ECO:0000305|PubMed:16552590}; CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:17826; CC Evidence={ECO:0000305|PubMed:16552590}; CC -!- PATHWAY: Carbohydrate metabolism; hexose metabolism. CC {ECO:0000305|PubMed:16552590}. CC -!- PATHWAY: Carbohydrate degradation; glycolysis; D-glyceraldehyde 3- CC phosphate and glycerone phosphate from D-glucose: step 1/4. CC {ECO:0000305|PubMed:16552590}. CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast outer membrane CC {ECO:0000250}; Single-pass membrane protein {ECO:0000250}. CC -!- TISSUE SPECIFICITY: Expressed in roots, leaves, flowers, immature seeds CC and endosperm. {ECO:0000269|PubMed:16552590}. CC -!- DEVELOPMENTAL STAGE: Expressed during flower development until 15 days CC after flowering. {ECO:0000269|PubMed:16552590}. CC -!- INDUCTION: By glucose or fructose treatment in leaves. CC {ECO:0000269|PubMed:16552590}. CC -!- MISCELLANEOUS: Plants over-expressing HXK6 exhibit hypersensitive plant CC growth retardation and enhanced repression of the photosynthetic gene CC RbcS in response to glucose treatment. {ECO:0000269|PubMed:19010999}. CC -!- SIMILARITY: Belongs to the hexokinase family. {ECO:0000255|PROSITE- CC ProRule:PRU01084, ECO:0000305}. 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; DQ116388; AAZ93623.1; -; mRNA. DR EMBL; AY884165; AAX68418.1; -; mRNA. DR EMBL; AP003768; BAB91930.1; -; Genomic_DNA. DR EMBL; AP008207; BAF06128.1; -; Genomic_DNA. DR EMBL; AP014957; BAS74288.1; -; Genomic_DNA. DR EMBL; AK065656; BAG89607.1; -; mRNA. DR RefSeq; XP_015618116.1; XM_015762630.1. DR PDB; 5ZQT; X-ray; 2.84 A; A/B/C=45-506. DR PDB; 6JJ4; X-ray; 2.60 A; A=40-506. DR PDB; 6JJ7; X-ray; 2.90 A; A/C/E=39-503. DR PDB; 6JJ8; X-ray; 2.80 A; A/B/C=39-503. DR PDB; 6JJ9; X-ray; 3.00 A; A/C/E=39-503. DR PDBsum; 5ZQT; -. DR PDBsum; 6JJ4; -. DR PDBsum; 6JJ7; -. DR PDBsum; 6JJ8; -. DR PDBsum; 6JJ9; -. DR AlphaFoldDB; Q8LQ68; -. DR SMR; Q8LQ68; -. DR STRING; 39947.Q8LQ68; -. DR PaxDb; 39947-Q8LQ68; -. DR EnsemblPlants; Os01t0742500-01; Os01t0742500-01; Os01g0742500. DR GeneID; 4326547; -. DR Gramene; Os01t0742500-01; Os01t0742500-01; Os01g0742500. DR KEGG; osa:4326547; -. DR eggNOG; KOG1369; Eukaryota. DR HOGENOM; CLU_014393_5_1_1; -. DR InParanoid; Q8LQ68; -. DR OMA; EILHDDC; -. DR OrthoDB; 5481886at2759; -. DR BRENDA; 2.7.1.1; 4460. DR UniPathway; UPA00109; UER00180. DR UniPathway; UPA00242; -. DR Proteomes; UP000000763; Chromosome 1. DR Proteomes; UP000059680; Chromosome 1. DR GO; GO:0009707; C:chloroplast outer membrane; IEA:UniProtKB-SubCell. DR GO; GO:0005829; C:cytosol; IBA:GO_Central. DR GO; GO:0005739; C:mitochondrion; IDA:CACAO. DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW. DR GO; GO:0008865; F:fructokinase activity; IBA:GO_Central. DR GO; GO:0004340; F:glucokinase activity; IMP:CACAO. DR GO; GO:0005536; F:glucose binding; IEA:InterPro. DR GO; GO:0046835; P:carbohydrate phosphorylation; IBA:GO_Central. DR GO; GO:0051156; P:glucose 6-phosphate metabolic process; IBA:GO_Central. DR GO; GO:0006006; P:glucose metabolic process; IBA:GO_Central. DR GO; GO:0006096; P:glycolytic process; IBA:GO_Central. DR GO; GO:0001678; P:intracellular glucose homeostasis; IBA:GO_Central. DR GO; GO:0009749; P:response to glucose; IMP:CACAO. DR CDD; cd00012; NBD_sugar-kinase_HSP70_actin; 1. DR Gene3D; 3.30.420.40; -; 1. DR Gene3D; 3.40.367.20; -; 1. DR InterPro; IPR043129; ATPase_NBD. DR InterPro; IPR001312; Hexokinase. DR InterPro; IPR019807; Hexokinase_BS. DR InterPro; IPR022673; Hexokinase_C. DR InterPro; IPR022672; Hexokinase_N. DR PANTHER; PTHR19443; HEXOKINASE; 1. DR PANTHER; PTHR19443:SF15; HEXOKINASE-6; 1. DR Pfam; PF00349; Hexokinase_1; 1. DR Pfam; PF03727; Hexokinase_2; 1. DR PRINTS; PR00475; HEXOKINASE. DR SUPFAM; SSF53067; Actin-like ATPase domain; 2. DR PROSITE; PS00378; HEXOKINASE_1; 1. DR PROSITE; PS51748; HEXOKINASE_2; 1. DR Genevisible; Q8LQ68; OS. PE 1: Evidence at protein level; KW 3D-structure; ATP-binding; Chloroplast; Glycolysis; Kinase; Membrane; KW Nucleotide-binding; Plastid; Plastid outer membrane; Reference proteome; KW Transferase; Transmembrane; Transmembrane helix. FT CHAIN 1..506 FT /note="Hexokinase-6" FT /id="PRO_0000247569" FT TRANSMEM 6..26 FT /note="Helical" FT /evidence="ECO:0000255" FT DOMAIN 43..497 FT /note="Hexokinase" FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01084" FT REGION 98..236 FT /note="Hexokinase small subdomain" FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01084" FT REGION 237..486 FT /note="Hexokinase large subdomain" FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01084" FT BINDING 112 FT /ligand="ADP" FT /ligand_id="ChEBI:CHEBI:456216" FT /evidence="ECO:0000269|PubMed:31176485, FT ECO:0007744|PDB:6JJ8, ECO:0007744|PDB:6JJ9" FT BINDING 113 FT /ligand="ADP" FT /ligand_id="ChEBI:CHEBI:456216" FT /evidence="ECO:0000269|PubMed:31176485, FT ECO:0007744|PDB:6JJ8, ECO:0007744|PDB:6JJ9" FT BINDING 114 FT /ligand="ADP" FT /ligand_id="ChEBI:CHEBI:456216" FT /evidence="ECO:0000269|PubMed:31176485, FT ECO:0007744|PDB:6JJ8" FT BINDING 202 FT /ligand="D-glucose" FT /ligand_id="ChEBI:CHEBI:4167" FT /evidence="ECO:0000269|PubMed:31176485, ECO:0000269|Ref.9, FT ECO:0007744|PDB:5ZQT, ECO:0007744|PDB:6JJ7" FT BINDING 203 FT /ligand="D-glucose" FT /ligand_id="ChEBI:CHEBI:4167" FT /evidence="ECO:0000269|PubMed:31176485, ECO:0000269|Ref.9, FT ECO:0007744|PDB:5ZQT, ECO:0007744|PDB:6JJ7" FT BINDING 237 FT /ligand="D-glucose" FT /ligand_id="ChEBI:CHEBI:4167" FT /evidence="ECO:0000269|PubMed:31176485, ECO:0000269|Ref.9, FT ECO:0007744|PDB:5ZQT, ECO:0007744|PDB:6JJ7" FT BINDING 238 FT /ligand="D-glucose" FT /ligand_id="ChEBI:CHEBI:4167" FT /evidence="ECO:0000269|PubMed:31176485, ECO:0000269|Ref.9, FT ECO:0007744|PDB:5ZQT, ECO:0007744|PDB:6JJ7" FT BINDING 261 FT /ligand="ADP" FT /ligand_id="ChEBI:CHEBI:456216" FT /evidence="ECO:0000269|PubMed:31176485, FT ECO:0007744|PDB:6JJ8, ECO:0007744|PDB:6JJ9" FT BINDING 264 FT /ligand="D-glucose" FT /ligand_id="ChEBI:CHEBI:4167" FT /evidence="ECO:0000269|PubMed:31176485, ECO:0000269|Ref.9, FT ECO:0007744|PDB:5ZQT, ECO:0007744|PDB:6JJ7" FT BINDING 292 FT /ligand="D-glucose" FT /ligand_id="ChEBI:CHEBI:4167" FT /evidence="ECO:0000269|PubMed:31176485, ECO:0000269|Ref.9, FT ECO:0007744|PDB:5ZQT, ECO:0007744|PDB:6JJ7" FT BINDING 323 FT /ligand="D-glucose" FT /ligand_id="ChEBI:CHEBI:4167" FT /evidence="ECO:0000269|PubMed:31176485, ECO:0000269|Ref.9, FT ECO:0007744|PDB:5ZQT, ECO:0007744|PDB:6JJ7" FT BINDING 451 FT /ligand="ADP" FT /ligand_id="ChEBI:CHEBI:456216" FT /evidence="ECO:0000269|PubMed:31176485, FT ECO:0007744|PDB:6JJ8, ECO:0007744|PDB:6JJ9" FT MUTAGEN 112 FT /note="G->D: Abolishes glucose phosphorylation activity." FT /evidence="ECO:0000269|PubMed:19010999" FT MUTAGEN 185 FT /note="S->A: Abolishes glucose phosphorylation activity." FT /evidence="ECO:0000269|PubMed:19010999" FT HELIX 49..55 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 60..77 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 102..110 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 112..123 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 124..127 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 129..138 FT /evidence="ECO:0007829|PDB:6JJ4" FT TURN 141..144 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 145..147 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 148..163 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 172..175 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 178..184 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 188..192 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 195..198 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 208..210 FT /evidence="ECO:0007829|PDB:5ZQT" FT STRAND 211..214 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 215..224 FT /evidence="ECO:0007829|PDB:6JJ4" FT TURN 225..227 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 230..236 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 238..249 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 253..271 FT /evidence="ECO:0007829|PDB:6JJ4" FT TURN 275..277 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 279..281 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 285..290 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 293..295 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 305..312 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 314..320 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 323..326 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 328..344 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 350..352 FT /evidence="ECO:0007829|PDB:5ZQT" FT HELIX 356..358 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 365..372 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 376..378 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 380..389 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 397..428 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 436..439 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 444..450 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 451..455 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 457..470 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 473..476 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 479..483 FT /evidence="ECO:0007829|PDB:6JJ4" FT STRAND 487..489 FT /evidence="ECO:0007829|PDB:6JJ4" FT HELIX 493..496 FT /evidence="ECO:0007829|PDB:6JJ4" SQ SEQUENCE 506 AA; 55121 MW; 242F8DCCB5FF8947 CRC64; MGKGTVVGTA VVVCAAAAAA VGVAVVVSRR RRSKREAEEE RRRRAAAVIE EVEQRFSTPT ALLRGIADAM VEEMERGLRA DPHAPLKMLI SYVDNLPTGD EHGLFYALDL GGTNFRVIRV QLGGREKRVV SQQYEEVAIP PHLMVGTSME LFDFIAAELE SFVKTEGEDF HLPEGRQREL GFTFSFPVHQ TSISSGTLIK WTKGFSINGT VGEDVVAELS RAMERQGLDM KVTALVNDTV GTLAGGRYVD NDVAAAVILG TGTNAAYVEH ANAIPKWTGL LPRSGNMVIN MEWGNFKSER LPRSDYDNAL DFESLNPGEQ IYEKMISGMY LGEIVRRILL KLAHDASLFG DVVPTKLEQR FILRTPDMSA MHHDTSHDLK HLGAKLKDIL GVADTSLEAR YITLHVCDLV AERGARLAAA GIYGILKKLG RDRVPSDGSQ KQRTVIALDG GLYEHYKKFR TCLEATLADL LGEEAASSVV VKLANDGSGI GAALLAASHS QYASVE //