NCBI Accession #
NP_567523.1
NCBI GenBank Nucleotide #
NM_117813.3
NCBI Official Full Name
chloroplast beta-amylase
NCBI Official Symbol
CT-BMY
NCBI Official Synonym Symbols
AtBAM3; BAM3; BETA-AMYLASE 3; BETA-AMYLASE 8; BMY8; chloroplast beta-amylase; CHLOROPLAST BETA-AMYLASE; DL4575C; FCAALL.5
NCBI Protein Information
chloroplast beta-amylase
NCBI Summary
Encodes a beta-amylase targeted to the chloroplast. Transgenic BMY8 RNAi lines fail to accumulate maltose during cold shock suggesting that maltose accumulation coincides with BMY8 expression. Apart from maltose, the sugar content of the RNAi lines were similar to wildtype (glucose and sucrose unaffected).
UniProt Synonym Gene Names
BMY8; CTBMY; CT-BMY
UniProt Protein Name
Beta-amylase 3, chloroplastic
UniProt Synonym Protein Names
1,4-alpha-D-glucan maltohydrolase; Beta-amylase 8; Chloroplast beta-amylase; CT-BMY
UniProt Primary Accession #
O23553
UniProt Secondary Accession #
Q941A5; Q9SMW0
UniProt Related Accession #
O23553
UniProt Comments
Beta-amylase activity. No alpha-amylase activity. Involved in cold resistance. Mediates the accumulation of maltose upon freezing stress, thus contributing to the protection of the photosynthetic electron transport chain. Plays a role in the circadian-regulated starch degradation and maltose metabolism in chloroplasts, especially at night. More active on phosphorylated glucan. Interacts directly with starch or other alpha-1,4-glucan.