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InterPro: IPR002912 Amino acid-binding ACT
Protein matches
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UniProtKB Matches: 13897 proteins |
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Accession
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IPR002912 ACT_bd |
Type
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Domain |
Signatures
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InterPro Relationships
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Found in
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IPR001341 Aspartate kinase domain
IPR004643 Iron-sulphur-dependent L-serine dehydratase beta subunit
IPR004789 Acetolactate synthase, small subunit
IPR004810 Formyltetrahydrofolate deformylase
IPR004811 RelA/SpoT protein
IPR005260 Aspartate kinase, monofunctional class
IPR005789 Threonine dehydratase II
IPR005961 Phenylalanine-4-hydroxylase, tetrameric form
IPR005963 Tryptophan 5-monooxygenase
IPR006236 D-3-phosphoglycerate dehydrogenase
IPR008242 Bifunctional P-protein, chorismate mutase/prephenate dehydratase
IPR008310 Ligand-binding-predicted, ACT
IPR010043 Protein-PII uridylyltransferase
IPR011147 Bifunctional aspartokinase/homoserine dehydrogenase I
IPR014424 Uncharacterised ligand-binding protein UCP004897, ACT domain-containing, AF1020 type
IPR015832 Uncharacterised conserved protein UCP006363, ACT domain-containing, AF1403 type
IPR016204 Homoserine dehydrogenase
IPR016619 Uncharacterised conserved protein UCP014439, ACT
IPR016784 Uncharacterised conserved protein UCP021288, ACT
IPR016867 Glycine cleavage repressor GcvR
IPR019773 Tyrosine 3-monooxygenase-like
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Contains
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IPR018528 Prephenate dehydratase, conserved site
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GO Term annotation
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Process
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GO:0008152 metabolic process
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Function
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GO:0016597 amino acid binding
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InterPro annotation
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Entry Details in BioMart
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Abstract
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The ACT domain is found in a variety of contexts and is proposed to be a conserved regulatory binding fold. ACT domains are linked to a wide range of metabolic enzymes that are regulated by amino acid concentration. The archetypical ACT domain is the C-terminal regulatory domain of 3-phosphoglycerate dehydrogenase (3PGDH), which folds with a ferredoxin-like topology. A pair of ACT domains form an eight-stranded antiparallel sheet with two molecules of allosteric inhibitor serine bound in the interface. Biochemical exploration of a few other proteins containing ACT domains supports the suggestions that these domains contain the archetypical ACT structure [1].
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Structural links
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Database links
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Pfam Clan: CL0070.9
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Additional Reading
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Kaplun A, Vyazmensky M, Zherdev Y, Belenky I, Slutzker A, Mendel S, Barak Z, Chipman DM, Shaanan B.
Structure of the regulatory subunit of acetohydroxyacid synthase isozyme III from Escherichia coli.
J. Mol. Biol. 357 2006 951-63
[PubMed: 16458324]
http://dx.doi.org/10.1016/j.jmb.2005.12.077
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Petkowski JJ, Chruszcz M, Zimmerman MD, Zheng H, Skarina T, Onopriyenko O, Cymborowski MT, Koclega KD, Savchenko A, Edwards A, Minor W.
Crystal structures of TM0549 and NE1324--two orthologs of E. coli AHAS isozyme III small regulatory subunit.
Protein Sci. 16 2007 1360-7
[PubMed: 17586771]
http://dx.doi.org/10.1110/ps.072793807
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Dey S, Hu Z, Xu XL, Sacchettini JC, Grant GA.
The effect of hinge mutations on effector binding and domain rotation in Escherichia coli D-3-phosphoglycerate dehydrogenase.
J. Biol. Chem. 282 2007 18418-26
[PubMed: 17459882]
http://dx.doi.org/10.1074/jbc.M701174200
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Tan K, Li H, Zhang R, Gu M, Clancy ST, Joachimiak A.
Structures of open (R) and close (T) states of prephenate dehydratase (PDT)--implication of allosteric regulation by L-phenylalanine.
J. Struct. Biol. 162 2008 94-107
[PubMed: 18171624]
http://dx.doi.org/10.1016/j.jsb.2007.11.009
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Mas-Droux C, Curien G, Robert-Genthon M, Laurencin M, Ferrer JL, Dumas R.
A novel organization of ACT domains in allosteric enzymes revealed by the crystal structure of Arabidopsis aspartate kinase.
Plant Cell 18 2006 1681-92
[PubMed: 16731588]
http://dx.doi.org/10.1105/tpc.105.040451
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Schuller DJ, Grant GA, Banaszak LJ.
The allosteric ligand site in the Vmax-type cooperative enzyme phosphoglycerate dehydrogenase.
Nat. Struct. Biol. 2 1995 69-76
[PubMed: 7719856]
http://dx.doi.org/10.1038/nsb0195-69
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Aravind L, Koonin EV.
Gleaning non-trivial structural, functional and evolutionary information about proteins by iterative database searches.
J. Mol. Biol. 287 1999 1023-40
[PubMed: 10222208]
http://dx.doi.org/10.1006/jmbi.1999.2653
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InterPro 23.1
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