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References Suggestions

Standard Name


Gene Synonym(s)

ECK3405, b3418, JW3381, malA[1], malA

Product Desc.

MalT transcriptional activator[2][3]

ATP-dependent transcriptional activator for the mal regulon[4]

Product Synonyms(s)

fused conserved protein[1], DNA-binding transcriptional activator, maltotriose-ATP-binding[1], MalA[2][1], B3418[2][1] , ECK3405, JW3381, malA, b3418

Function from GO
Knock-Out Phenotype

transcription unit(s): malT[2], OP00128

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Activated by maltotriose and ATP to form active oligomers. Signal transduction ATPases with numerous domains (STAND) protein. ATP hydrolysis is not required for transcription activation (Richet, 1989), but is required to recycle back to the inactive form, which has ADP, not ATP bound (Marquenet, 2007). MalY (Clausen, 2000; Schreiber, 2000), MalK (Reyes, 1988; Panagiotidis, 1998; Bohm, 2002) and Aes (Joly, 2002) negatively regulate MalT activity by binding and blocking maltotriose activation. MalT is required for phage lambda sensitivity.[4]


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  1. 1.0 1.1 1.2 1.3 1.4 Riley, M. et al. (2006) Nucleic Acids Res 34:1-6 (corrected supplemental data from B. Wanner)
  2. 2.0 2.1 2.2 2.3 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  3. EcoCyc (release 11.1; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  4. 4.0 4.1 EcoGene: Rudd, KE (2000) EcoGene: a genome sequence database for Escherichia coli K-12. Nucleic Acids Res 28:60-4.