Carbohydrate Binding Module Family 74

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• Author: ^^^Amanda Photenhauer^^^
• Responsible Curator: ^^^Nicole Koropatkin^^^

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CAZy DB link

http://www.cazy.org/CBM74.html

Ligand specificities

The dialysis refolded MaAmyA CBM74 domain was shown to bind to soluble potato starch, boiled granular potato, wheat, and waxy corn starch (type 3 resistant starches) as well as amylose (unspecified source), and amylopectin (unspecified source) by polysaccharide‐binding macroarray. This domain also binds to raw granular starches (type 2 resistant starch) from wheat, waxy corn, and potato as shown by adsorption depletion in which unbound protein is measured following incubation with and centrifugation of starch granules. [1]

Structural Features

Content in this section should include, in paragraph form, a description of:

• Fold: Structural fold (beta trefoil, beta sandwich, etc.)
• Type: Include here Type A, B, or C and properties
• Features of ligand binding: Describe CBM binding pocket location (Side or apex) important residues for binding (W, Y, F, subsites), interact with reducing end, non-reducing end, planar surface or within polysaccharide chains. Include examples pdb codes. Metal ion dependent. Etc.

Functionalities

Content in this section should include, in paragraph form, a description of:

• Functional role of CBM: Describe common functional roles such as targeting, disruptive, anchoring, proximity/position on substrate.
• Most Common Associated Modules: 1. Glycoside Hydrolase Activity; 2. Additional Associated Modules (other CBM, FNIII, cohesin, dockerins, expansins, etc.)
• Novel Applications: Include here if CBM has been used to modify another enzyme, or if a CBM was used to label plant/mammalian tissues? Etc.

Family Firsts

First Identified

CBM74 was first identified as the C-terminal domain of a multi-modular α-amylase, MaAmyA, originating from Microbacterium aurum[1].

First Structural Characterization

No structure has yet been determined for any CBM74 family member.

References

1. Valk V, Lammerts van Bueren A, van der Kaaij RM, and Dijkhuizen L. (2016). Carbohydrate-binding module 74 is a novel starch-binding domain associated with large and multidomain α-amylase enzymes. FEBS J. 2016;283(12):2354-68. DOI:10.1111/febs.13745 |
2. Cantarel BL, Coutinho PM, Rancurel C, Bernard T, Lombard V, and Henrissat B. (2009). The Carbohydrate-Active EnZymes database (CAZy): an expert resource for Glycogenomics. Nucleic Acids Res. 2009;37(Database issue):D233-8. DOI:10.1093/nar/gkn663 |

3. Davies, G.J. and Sinnott, M.L. (2008) Sorting the diverse: the sequence-based classifications of carbohydrate-active enzymes. The Biochemist, vol. 30, no. 4., pp. 26-32. Download PDF version.

4. Boraston AB, Bolam DN, Gilbert HJ, and Davies GJ. (2004). Carbohydrate-binding modules: fine-tuning polysaccharide recognition. Biochem J. 2004;382(Pt 3):769-81. DOI:10.1042/BJ20040892 |
5. Hashimoto H (2006). Recent structural studies of carbohydrate-binding modules. Cell Mol Life Sci. 2006;63(24):2954-67. DOI:10.1007/s00018-006-6195-3 |
6. Shoseyov O, Shani Z, and Levy I. (2006). Carbohydrate binding modules: biochemical properties and novel applications. Microbiol Mol Biol Rev. 2006;70(2):283-95. DOI:10.1128/MMBR.00028-05 |
7. Guillén D, Sánchez S, and Rodríguez-Sanoja R. (2010). Carbohydrate-binding domains: multiplicity of biological roles. Appl Microbiol Biotechnol. 2010;85(5):1241-9. DOI:10.1007/s00253-009-2331-y |