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BAM1 beta-amylase 1 [ Arabidopsis thaliana (thale cress) ]

Gene ID: 821975, updated on 18-Sep-2024

Summary

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Official Symbol
BAM1
Official Full Name
beta-amylase 1
Primary source
TAIR:AT3G23920
Locus tag
AT3G23920
See related
Araport:AT3G23920
Gene type
protein coding
RefSeq status
REVIEWED
Organism
Arabidopsis thaliana (ecotype: Columbia)
Lineage
Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae; rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis
Also known as
AtBAM1; beta-amylase 1; BETA-AMYLASE 7; BMY7; TR-BAMY
Summary
Encodes a chloroplast beta-amylase. Is necessary for leaf starch breakdown in the absence of BAM3.
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Genomic context

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See BAM1 in Genome Data Viewer
Location:
chromosome: 3
Exon count:
4
Sequence:
Chromosome: 3; NC_003074.8 (8641181..8644449)

Chromosome 3 - NC_003074.8Genomic Context describing neighboring genes Neighboring gene RNA recognition motif (RRM)-containing protein Neighboring gene reverse transcriptase-like protein Neighboring gene troponin T, skeletal protein Neighboring gene dehydratase family

Genomic regions, transcripts, and products

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Genomic Sequence:
NC_003074.8

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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Related articles in PubMed

  1. A dominant mutation in β-AMYLASE1 disrupts nighttime control of starch degradation in Arabidopsis leaves. Feike D, et al. Plant Physiol, 2022 Mar 28. PMID 34958379, Free PMC Article
  2. β-amylase 1 (BAM1) degrades transitory starch to sustain proline biosynthesis during drought stress. Zanella M, et al. J Exp Bot, 2016 Mar. PMID 26792489
  3. ß-amylase1 mutant Arabidopsis plants show improved drought tolerance due to reduced starch breakdown in guard cells. Prasch CM, et al. J Exp Bot, 2015 Sep. PMID 26139825, Free PMC Article
  4. Redox regulation of a novel plastid-targeted beta-amylase of Arabidopsis. Sparla F, et al. Plant Physiol, 2006 Jul. PMID 16698902, Free PMC Article
  5. Beta-AMYLASE4, a noncatalytic protein required for starch breakdown, acts upstream of three active beta-amylases in Arabidopsis chloroplasts. Fulton DC, et al. Plant Cell, 2008 Apr. PMID 18390594, Free PMC Article

See all (8) citations in PubMed

GeneRIFs: Gene References Into Functions

What's a GeneRIF?
  1. A dominant mutation in beta-AMYLASE1 disrupts nighttime control of starch degradation in Arabidopsis leaves.
    Title: A dominant mutation in β-AMYLASE1 disrupts nighttime control of starch degradation in Arabidopsis leaves.
  2. carbon skeletons deriving from BAM1 diurnal degradation of transitory starch support the biosynthesis of proline required to face the osmotic stress.
    Title: β-amylase 1 (BAM1) degrades transitory starch to sustain proline biosynthesis during drought stress.
  3. Drought tolerance of bam1 mutant plants is improved as compared with wild-type controls. There was a significant down-regulation of genes encoding aquaporins, auxin- and ethylene-responsive factors, and cell-wall modifying enzymes.
    Title: ß-amylase1 mutant Arabidopsis plants show improved drought tolerance due to reduced starch breakdown in guard cells.
  4. Consistent with thioredoxin-regulated beta-amylase redox dependency, total beta-amylase activity in Arabidopsis chloroplasts was partially redox regulated and required reducing conditions for full activation.
    Title: Redox regulation of a novel plastid-targeted beta-amylase of Arabidopsis.
Submit: New GeneRIF Correction

General gene information

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NM_113297.3

Gene Ontology Provided by TAIR

Function Evidence Code Pubs
enables beta-amylase activity IDA
Inferred from Direct Assay
more info
 PubMed 
enables beta-amylase activity IEA
Inferred from Electronic Annotation
more info
  
Process Evidence Code Pubs
acts_upstream_of_or_within response to water deprivation IEP
Inferred from Expression Pattern
more info
 PubMed 
acts_upstream_of_or_within starch catabolic process IDA
Inferred from Direct Assay
more info
 PubMed 
acts_upstream_of_or_within starch catabolic process IMP
Inferred from Mutant Phenotype
more info
 PubMed 
Component Evidence Code Pubs
located_in extracellular region ISM
Inferred from Sequence Model
more info
  

General protein information

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Preferred Names
beta-amylase 1
NP_189034.1
  • beta-amylase 1 (BAM1); FUNCTIONS IN: beta-amylase activity; INVOLVED IN: response to water deprivation, starch catabolic process; LOCATED IN: cytosol, nucleus; EXPRESSED IN: 25 plant structures; EXPRESSED DURING: 15 growth stages; CONTAINS InterPro DOMAIN/s: Glycoside hydrolase, family 14, conserved site (InterPro:IPR018238), Glycoside hydrolase, family 14 (InterPro:IPR001554), Glycoside hydrolase, catalytic core (InterPro:IPR017853), Glycoside hydrolase, family 14B, plant (InterPro:IPR001371), Glycoside hydrolase, subgroup, catalytic core (InterPro:IPR013781); BEST Arabidopsis thaliana protein match is: chloroplast beta-amylase (TAIR:AT4G17090.1); Has 845 Blast hits to 843 proteins in 168 species: Archae - 0; Bacteria - 89; Metazoa - 0; Fungi - 0; Plants - 691; Viruses - 0; Other Eukaryotes - 65 (source: NCBI BLink).

NCBI Reference Sequences (RefSeq)

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Genome Annotation

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference assembly

Genomic

  1. NC_003074.8 Reference assembly

    Range
    8641181..8644449
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. NM_113297.3 → NP_189034.1  beta-amylase 1 [Arabidopsis thaliana]

    See identical proteins and their annotated locations for NP_189034.1

    Status: REVIEWED

    UniProtKB/Swiss-Prot
    Q0WWR5, Q9LIR6
    UniProtKB/TrEMBL
    A0A178VNG4, A0A5S9XFL1
    Conserved Domains (1) summary
    PLN00197
    Location:1 → 575
    PLN00197; beta-amylase; Provisional
Nucleotide Protein
Heading Accession and Version
Protein Accession Links
GenPept Link UniProtKB Link
Q9LIR6.1

Gene LinkOut

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