| IED ID | IndEnz0001000401 |
| Enzyme Type ID | amylase000401 |
| Protein Name |
Beta-amylase 2, chloroplastic EC 3.2.1.2 1,4-alpha-D-glucan maltohydrolase Beta-amylase 9 |
| Gene Name | BAM2 BMY9 At4g00490 F6N23.1 |
| Organism | Arabidopsis thaliana (Mouse-ear cress) |
| Taxonomic Lineage | cellular organisms Eukaryota Viridiplantae Streptophyta Streptophytina Embryophyta Tracheophyta Euphyllophyta Spermatophyta Magnoliopsida Mesangiospermae eudicotyledons Gunneridae Pentapetalae rosids malvids Brassicales Brassicaceae Camelineae Arabidopsis Arabidopsis thaliana (Mouse-ear cress) |
| Enzyme Sequence | MAIRLNHSVIPVSVKLGAPTRVSARSSLPFSVGDWRGVSTFSGARPLVLAKVKLRAESTEEDRVPIDDDDDSTDQLVDEEIVHFEERDFAGTACVPVYVMLPLGVIDMNSEVVEPEELLDQLRTLKSVNVDGVMVDCWWGIVESHTPQVYNWSGYKKLFQMIRELGLKIQVVMSFHECGGNVGDDVHIQIPEWVREIGQSNPDIYFTDSAGRRNTECLTWGIDKQRVLRGRTALEVYFDYMRSFRVEFDEFFEEKIIPEIEVGLGPCGELRYPSYPAQFGWKYPGIGEFQCYDKYLMNSLKEAAEVRGHSFWGRGPDNTETYNSTPHGTGFFRDGGDYDSYYGRFFLNWYSRVLIDHGDRVLAMANLAFEGTCIAAKLSGIHWWYKTASHAAELTAGFYNSSNRDGYGPIAAMFKKHDAALNFTCVELRTLDQHEDFPEALADPEGLVWQVLNAAWDASIPVASENALPCYDREGYNKILENAKPLTDPDGRHLSCFTYLRLNPTLMESQNFKEFERFLKRMHGEAVPDLGLAPGTQETNPE |
| Enzyme Length | 542 |
| Uniprot Accession Number | O65258 |
| Absorption | |
| Active Site | ACT_SITE 269; /note=Proton donor; /evidence=ECO:0000250; ACT_SITE 465; /note=Proton acceptor; /evidence=ECO:0000250 |
| Activity Regulation | ACTIVITY REGULATION: Redox regulation; active in reducing conditions, inactive in oxidizing conditions. {ECO:0000250}. |
| Binding Site | BINDING 136; /note=Substrate; /evidence=ECO:0000250; BINDING 176; /note=Substrate; /evidence=ECO:0000250; BINDING 184; /note=Substrate; /evidence=ECO:0000250; BINDING 377; /note=Substrate; /evidence=ECO:0000250; BINDING 382; /note=Substrate; /evidence=ECO:0000250; BINDING 424; /note=Substrate; /evidence=ECO:0000250; BINDING 501; /note=Substrate; /evidence=ECO:0000250 |
| Calcium Binding | |
| catalytic Activity | CATALYTIC ACTIVITY: Reaction=Hydrolysis of (1->4)-alpha-D-glucosidic linkages in polysaccharides so as to remove successive maltose units from the non-reducing ends of the chains.; EC=3.2.1.2; |
| DNA Binding | |
| EC Number | 3.2.1.2 |
| Enzyme Function | FUNCTION: Low beta-amylase activity. Interacts poorly with starch or other alpha-1,4-glucan. {ECO:0000269|PubMed:18390594, ECO:0000269|PubMed:19664588}. |
| Temperature Dependency | |
| PH Dependency | BIOPHYSICOCHEMICAL PROPERTIES: pH dependence: Optimum pH is 6. {ECO:0000269|PubMed:18390594, ECO:0000269|PubMed:19664588}; |
| Pathway | |
| nucleotide Binding | |
| Features | Active site (2); Binding site (7); Chain (1); Erroneous gene model prediction (2); Region (1); Transit peptide (1) |
| Keywords | Carbohydrate metabolism;Chloroplast;Glycosidase;Hydrolase;Plastid;Polysaccharide degradation;Reference proteome;Transit peptide |
| Interact With | |
| Induction | INDUCTION: Slightly by cold stress. {ECO:0000269|PubMed:16297066}. |
| Subcellular Location | SUBCELLULAR LOCATION: Plastid, chloroplast {ECO:0000269|PubMed:18390594, ECO:0000269|PubMed:18431481}. |
| Modified Residue | |
| Post Translational Modification | |
| Signal Peptide | |
| Structure 3D | |
| Cross Reference PDB | - |
| Mapped Pubmed ID | 14576160; 15347792; 15749471; 15862090; 16698902; 16798941; 16913860; 20546137; 23393426; 28627464; 29066669; 30154813; 30348315; 32072133; 32254060; 32278327; |
| Motif | |
| Gene Encoded By | |
| Mass | 61,398 |
| Kinetics | |
| Metal Binding | |
| Rhea ID | |
| Cross Reference Brenda |