1ot1

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Bacillus circulans strain 251 Cyclodextrin glycosyl transferase mutant D135A

Structural highlights

1ot1 is a 1 chain structure with sequence from Niallia circulans. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2Å
Ligands:ACY, BGC, CA, EPE, GLC, MPD, PRD_900001
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CDGT2_NIACI

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The alpha-amylase family is a large group of starch processing enzymes [Svensson, B. (1994) Plant Mol. Biol. 25, 141-157]. It is characterized by four short sequence motifs that contain the seven fully conserved amino acid residues in this family: two catalytic carboxylic acid residues and four substrate binding residues. The seventh conserved residue (Asp135) has no direct interactions with either substrates or products, but it is hydrogen-bonded to Arg227, which does bind the substrate in the catalytic site. Using cyclodextrin glycosyltransferase as an example, this paper provides for the first time definite biochemical and structural evidence that Asp135 is required for the proper conformation of several catalytic site residues and therefore for activity.

The fully conserved Asp residue in conserved sequence region I of the alpha-amylase family is crucial for the catalytic site architecture and activity.,Leemhuis H, Rozeboom HJ, Dijkstra BW, Dijkhuizen L FEBS Lett. 2003 Apr 24;541(1-3):47-51. PMID:12706817[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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Citations
6 reviews cite this structure
Structure-function relationships of glucansucrase and fructansucrase enzymes from lactic acid bacteria.
van et al. (2006)
5 more
6 other articles
No citations found

See Also

References

  1. ↑ Leemhuis H, Rozeboom HJ, Dijkstra BW, Dijkhuizen L. The fully conserved Asp residue in conserved sequence region I of the alpha-amylase family is crucial for the catalytic site architecture and activity. FEBS Lett. 2003 Apr 24;541(1-3):47-51. PMID:12706817

Contents


PDB ID 1ot1

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OCA

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