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Difference between revisions of "Template:News"

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'''16 November 2016:''' ''A new plant glycanase with a lysozyme fold:'' '''[[User:Spencer Williams|Spencer Williams]]''' does it again, with the completion of the '''[[Glycoside Hydrolase Family 134]]''' page on a new family of [[inverting]] beta-(gluco)mannanases.  This small family emerged in 2015 with the biochemical characterization of an ''Aspergillus nidulans'' (fungal) member.  Recently the tertiary structure and detailed catalytic mechanism - including the reaction [[conformational itinerary]] - of a ''Streptomyces'' sp. (bacterial) '''[[Glycoside Hydrolase Family 134|GH134]]''' member has been resolved by [[User:Gideon Davies|Gideon Davies]], [[User:Spencer Williams|Spencer Williams]], and their collaborators and co-workers.  This is only the second example of a [[glycoside hydrolase]] family that utilizes a lysozyme-like fold as a scaffold for the cleavge of a plant polysaccharide, as opposed to bacterial peptidoglycan; the first, a [[Glycoside Hydrolase Family 124]] cellulase characterized by [[User:Harry Gilbert|Harry Gilbert]] ''et al.'', also uses an [[inverting]] mechanism.
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'''23 January 2026:''' ''An oldie, but a goodie:'' As our first page of the new year, the '''[[Glycoside Hydrolase Family 71]]''' page, written by '''[[User:Antonielle Vieira Monclaro|Antonielle Vieira Monclaro]]''', was [[Curator Approved]] by '''[[User:Johan Larsbrink|Johan Larsbrink]]''' today. '''[[GH71]]''' is a family of mostly fungal alpha-1,3-glucanases that was established and subjected to mechanistic characterization in the early 2000s.  More recently in 2025, the Yano and [[User:Johan Larsbrink|Larsbrink]] groups independently presented the first crystal structures of '''[[GH71]]''' members (from ''Schizosaccharomyces'' and ''Aspergillus'', respectively).  ''[[User:Antonielle Vieira Monclaro|Antonielle]] wrote an excellent overview of '''[[GH71]]''', which you should definitely check out '''[[GH71|here]]'''.''
 
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'''3 November 2016:''' ''New PDB links-out:'' For 3-D visualization of exemplar CAZymes and CBMs, we're trying a switch from [http://proteopedia.org/ Proteopedia] to the [https://doi.org/10.1093/nar/gkv402 NGL viewer] implementation at the RCSB Protein Data Bank.  We've made this switch site-wide across CAZypedia, and would like to [[Special:Contact|hear any feedback]] you might have. Here's an example for direct comparison: The seminal bacterial cellulose synthase complex [http://proteopedia.org/wiki/index.php/4hg6 in the JSMol viewer at Proteopedia] (including wiki page) and [http://www.rcsb.org/pdb/ngl/ngl.do?pdbid=4HG6 in the NGL viewer at the PDB] (other info available via the page tabs).
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'''8 December 2025:''' ''Just in time for the holidays:'' The '''[[Glycosyltransferase Family 138]]''' page by [[Author]] '''[[User:Wei Peng|Wei Peng]]''' and [[Responsible Curator]] '''[[User:Kim Orth|Kim Orth]]''' was [[Curator Approved]] today. '''[[GT138]]''' is small family of plant-associated bacterial members. The archetype from ''Pseudomonas syringae'', AvrB, is a rhamnosyl transferase that glycosylates the plant host protein RIN4 to effect programmed cell death (hypersensitive response).  Also notable, AvrB has an unusual protein fold among [[glycosyltransferases]], based upon a "Fido" domain. '''''[[GT138]]''' represents one of a small, but hopefully growing, number of [[Glycosyltransferases|GT]] pages in ''CAZypedia'', whose unique features you should read more about '''[[GT138|here]]'''.''
 
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'''30 October 2016:''' ''Another X-module comes to light:'' Today '''[[User:Spencer Williams|Spencer Williams]]''' completed the '''[[Glycoside Hydrolase Family 135]]''' page, which describes the genesis of a new CAZy family from a small group of modules formerly known as "X307" in the [[User:Bernard Henrissat|CAZyModO]] classification. The single biochemically and structurally characterized GH135 member hydrolyzes the unique fungal exo-polysaccharide galactosaminogalactan, with crystallographic evidence suggesting that the enzyme acts as a alpha-galactosaminidase.  However, a number of key enzymological questions about this new family remain outstanding, and we look forward to future work in this direction of the CAZyme landscape.
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'''31 October 2025:''' ''A spooktacular addition to the CAZypedia family!'' Come and say 'Boo!' to the frighteningly well written '''[[CBM13]]''' ''CAZypedia'' page.  The '''[[CBM13]]''' family is a '''[[Carbohydrate-binding_modules#Blurred Lines: CBMs, Lectins and Outliers|lectin-like CBM family]]'''. Its first characterized members were lectins, including the B chain from the highly toxic [https://en.wikipedia.org/wiki/Ricin ricin] toxin from ''Ricinus communis''.  This spine tingling read was authored by '''[[User:Scott Mazurkewich|Scott Mazurkewich]]''' and '''[[User:Lauren McKee|Lauren McKee]]''' who also acted as responsible curator. ''Come and visit the scariest of ''CAZypedia'' CBM pages, '''[[CBM13|here!]]'''...  if you dare...'' 
 
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'''3 September 2016:''' ''Galactosaminoglycan degradation:'' '''[[User:Spencer Williams|Spencer Williams]]''' has just completed a short entry on '''[[Glycoside Hydrolase Family 114]]''', a small family of bacterial and fungal sequences currently represented by a single characterized endo-alpha-1,4-polygalactosaminidase. alpha-1,4-Polygalactosamine, also known as galactosaminoglycan, is produced as a secreted polysaccharide by select fungi, including Aspergilli.
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'''29 July 2025:''' ''[[CBM91]] is in the news!'' The xylan binding '''[[CBM91]]''' family ''CAZypedia'' page is up and running.  Appended to mainly [[GH43]] xylanases this [[CBM91]] family drives interaction with substrate. The [[CBM91]] page was authored by '''[[User:Daichi Ito|Daichi Ito]]''' who also discovered the initial xylan-binding function which resulted in the creation of the [[CBM91]] CAZy family. ''Read up on this industrially interesting '''[[CBM91]]''' family '''[[CBM91|here]]'''.''
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'''27 February 2016:''' ''The sweet side of sulfur:'' [[Author]] '''[[User:Spencer Williams|Spencer Williams]]''' has updated the '''[[Glycoside Hydrolase Family 31]]''' page to reflect the recent discovery of the first dedicated sulfoquinovosidases (SQases), previously ‘hidden’ within this family. SQases cleave α-glycosides of sulfoquinovose (6-sulfoglucose), which represent a significant reservoir of organosulfur in the biosphere. ''See the [[GH31]] page to discover more of the hidden charms of this family.''
 
 
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Latest revision as of 07:14, 26 January 2026

23 January 2026: An oldie, but a goodie: As our first page of the new year, the Glycoside Hydrolase Family 71 page, written by Antonielle Vieira Monclaro, was Curator Approved by Johan Larsbrink today. GH71 is a family of mostly fungal alpha-1,3-glucanases that was established and subjected to mechanistic characterization in the early 2000s. More recently in 2025, the Yano and Larsbrink groups independently presented the first crystal structures of GH71 members (from Schizosaccharomyces and Aspergillus, respectively). Antonielle wrote an excellent overview of GH71, which you should definitely check out here.

8 December 2025: Just in time for the holidays: The Glycosyltransferase Family 138 page by Author Wei Peng and Responsible Curator Kim Orth was Curator Approved today. GT138 is small family of plant-associated bacterial members. The archetype from Pseudomonas syringae, AvrB, is a rhamnosyl transferase that glycosylates the plant host protein RIN4 to effect programmed cell death (hypersensitive response). Also notable, AvrB has an unusual protein fold among glycosyltransferases, based upon a "Fido" domain. GT138 represents one of a small, but hopefully growing, number of GT pages in CAZypedia, whose unique features you should read more about here.

31 October 2025: A spooktacular addition to the CAZypedia family! Come and say 'Boo!' to the frighteningly well written CBM13 CAZypedia page. The CBM13 family is a lectin-like CBM family. Its first characterized members were lectins, including the B chain from the highly toxic ricin toxin from Ricinus communis. This spine tingling read was authored by Scott Mazurkewich and Lauren McKee who also acted as responsible curator. Come and visit the scariest of CAZypedia CBM pages, here!... if you dare...

29 July 2025: CBM91 is in the news! The xylan binding CBM91 family CAZypedia page is up and running. Appended to mainly GH43 xylanases this CBM91 family drives interaction with substrate. The CBM91 page was authored by Daichi Ito who also discovered the initial xylan-binding function which resulted in the creation of the CBM91 CAZy family. Read up on this industrially interesting CBM91 family here.

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