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ENZYME

ENZYME entry: EC 3.2.1.26

PURL: https://purl.expasy.org/enzyme/EC/3.2.1.26
Accepted Name
beta-fructofuranosidase
Alternative Name(s)
beta-fructosidase
invertase
saccharase
Reaction catalysed
Hydrolysis of terminal non-reducing beta-D-fructofuranoside residues in beta-D-fructofuranosides
Comment(s)
  • The enzyme, found in bacteria, plants, and fungi, was discovered in yeast as an enzyme that hydrolyzes sucrose.
  • It was originally called invertase due to the fact that when sucrose is hydrolyzed, the optical rotation reverts from dextrorotatory to levorotatory.
  • The enzyme recognizes and hydrolyzes the beta-fructofuranoside side of the sucrose molecule and has low specificity regarding the other end of the molecule (a different enzyme, EC 3.2.1.48, recognizes and hydrolyzes the glucoside group on the opposite side of sucrose).
  • Some, but not all, enzymes can act on short fructooligosaccharides such as 1-kestotrisoe, 1,1-kestotetraose, raffinose and stachiose.
  • The enzyme also catalyzes fructotransferase reactions.
Cross-references
Rhea expert-curated reactions3.2.1.26
ExplorEnz3.2.1.26
IUBMB Enzyme Nomenclature3.2.1.26
UniProtKB/Swiss-Prot
O33833, BFRA_THEMAQ9LQF2, CINV1_ARATHQ69T31, CINV1_ORYSJ
Q67XD9, CINV2_ARATHP40714, CSCA_ECOLXQ43866, INV1_ARATH
P93761, INV1_CAPANP26792, INV1_DAUCAP49175, INV1_MAIZE
A2X5P7, INV1_ORYSIQ0E0P0, INV1_ORYSJQ43089, INV1_PEA
O59852, INV1_SCHPOP40912, INV1_WICAOP10594, INV1_YEASX
Q1PEF8, INV2_ARATHQ39692, INV2_DAUCAQ01IS7, INV2_ORYSI
Q0JDC5, INV2_ORYSJP00724, INV2_YEASTQ39693, INV3_DAUCA
Q01IS8, INV3_ORYSIQ0JDC6, INV3_ORYSJP10595, INV3_YEASX
Q8W413, INV4_ARATHQ5JJV0, INV4_ORYSJP10596, INV4_YEASX
Q9LIB9, INV5_ARATHQ56UD1, INV5_ORYSJP10597, INV5_YEASX
Q56UD0, INV6_ORYSJA2YZ01, INV7_ORYSIQ0J360, INV7_ORYSJ
P07635, INV7_YEASXQ43348, INVA3_ARATHQ39041, INVA4_ARATH
Q9FXA8, INVA_ARATHP49174, INVA_MAIZEO24509, INVA_PHAVU
P29000, INVA_SOLLCQ43857, INVA_VICFAP29001, INVA_VIGRR
Q9SW48, INVB_ARATHP80065, INVB_DAUCAF8DT27, INVB_ZYMMA
P0DJA4, INVB_ZYMMOB9DFA8, INVC_ARATHF4I2X9, INVD_ARATH
Q9FK88, INVE_ARATHQ9C560, INVF_ARATHQ84JL5, INVH_ARATH
O42878, INVX_SCHPOQ6BJW6, INV_DEBHAQ9Y746, INV_KLULA
P24133, INV_SCHOCQ10MC0, NIN1_ORYSJQ6H6N5, NIN3_ORYSJ
P16553, RAFD_ECOLXH2DF87, RHVI1_ROSHCH2DF88, RHVI2_ROSHC
P07819, SCRB_BACSUQ09122, SCRB_FUSMRP27217, SCRB_KLEPN
Q04937, SCRB_LACLLP43471, SCRB_PEDPEA1STJ9, SCRB_PSYIN
P37075, SCRB_SALTMQ05936, SCRB_STAXYP13522, SCRB_STRMU
P13394, SCRB_VIBALA5EZZ8, SCRB_VIBC3Q9KLT6, SCRB_VIBCH
Q56660, SCRB_VIBCLF8DVG5, SCR_ZYMMAP0DJA7, SCR_ZYMMO
BRENDA3.2.1.26
MetaCyc3.2.1.26
KEGG Ligand Database for Enzyme Nomenclature3.2.1.26
MEDLINEFind literature relating to 3.2.1.26

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 3.2.1.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 3.2.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 3.-.-.-