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'''22 February 2019:''' ''Starch-active LPMOs:'' '''[[User:Glyn Hemsworth|Glyn Hemsworth]]''' recently completed the '''[[Auxiliary Activity Family 13]]''' page, which was [[Curator Approved]] by [[Responsible Curator]] '''[[User:Gideon Davies|Gideon Davies]]''' today.  '''[[AA13]]''' was first identified in 2014 and is notable as the first lytic polysaccharide mono-oxygenase (LPMO) family that is active on alpha-glycosidic bonds, ''viz.'' those in amylose (starch)Overall, LPMOs are an intriguing group of copper-dependent oxidases that open-up insoluble polysaccharide substrates for increased attack by [[glycoside hydrolases]].  ''Read more about '''[[AA13]]''' and related beta-active LPMOs ([[AA9]], [[AA10]], [[AA11]], AA14, & AA15) on their respective [[Auxiliary Activity Families|CAZypedia pages]] and at the [http://www.cazy.org/Auxiliary-Activities.html CAZy Database].''
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'''19 July 2024:''' ''Chalk-up one more for the GTs!'' The '''[[Glycosyltransferase Family 47]]''' page joined the small group of [[Curator Approved]] [[Glycosyltransferase Families]] pages in ''CAZypedia'' today. This entry was [[author]]ed by Ph.D. students '''[[User:Daniel Tehrani|Daniel Tehrani]]''' and '''[[User:Charlie Corulli|Charlie Corulli]]''', and [[Responsible Curator|Curated]] by '''[[User:Breeanna Urbanowicz|Breeanna Urbanowicz]]''' with input from '''[https://ccrc.uga.edu/team/kelley-moremen/ Kelley Moremen]'''.  Widely represented in plants, '''[[GT47]]''' members are anomer-[[inverting]] [[glycosyltransferases]], which are involved in the biosynthesis of several cell wall matrix polysaccharides.  Representatives from mammals are involved in heparin biosynthesis.  Correspondingly, members of [[GH47]] have diverse substrate specificities, including the transfer of both anionic and neutral monosaccharides to polysaccharides. ''This is a great example where two keen Ph.D. students worked with their supervisors to create a valuable page for the scientific community. We encourage others to follow their lead, on your favorite family!''
 
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'''9 July 2024:''' ''Yet another new family of beta-1,2-glucan-active enzymes!'' Today, '''[[User:Masahiro Nakajima|Masahiro Nakajima]]''' [[Curator Approved]] the '''[[Glycoside Hydrolase Family 186]]''' page by '''[[User:Sei Motouchi|Sei Motouchi]]'''. '''[[GH186]]''' is a family of anomer-[[inverting]] enzymes from bacteria, members of which are specific for beta-1,2-glucans.  Intriguingly, although some [[GH186]] members work as classic [[glycoside hydrolases]], others perform transglycosylation by wrapping the sugar chain around in the active-site, to position the 6-OH group of a terminal glucosyl unit for direct attack.  Also notable, [[GH186]] members appear to use an extended chain of water molecules to relay acceptor deprotonation by the [[general base]] residue, ''i.e.'' a [https://en.wikipedia.org/wiki/Grotthuss_mechanism Grotthuss mechanism]. ''Check out the '''[[GH186]]''' page to learn more about these interesting enzymes, and make sure to see the [[GH189]], [[GH144]], and [[GH162]] pages from this same group.''
  
'''4 February 2019:''' ''CAZypedia's first CE page!''  Today [[Responsible Curator]] '''[[User:Michael Suits|Michael Suits]]''' approved the '''[[Carbohydrate Esterase Family 4]]''' page [[author]]ed by graduate student '''[[User:Alex Anderson|Alex Anderson]]''', thereby marking a new milestone ''CAZypedia's'' [[CAZypedia:History|history]].  [[:Category:Carbohydrate Esterase Families|Carbohydrate Esterases (CEs)]] catalyze the de-''O''-acylation or de-''N''-acylation of saccharides (the latter are formally amidases), and '''[[CE4]]''' contains members with either activity, ''e.g.'' acetylxylan esterases and peptidoglycan deacetylases. '''[[CE4]]''' members thus play diverse biological roles in nature.  ''Learn more about the structure and mechanism of these metal-dependent de-acylases [[CE4|here]]''.
 
 
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'''27 November 2018:''' ''Remember, remember... an end of November new CAZypedia CBM family page.''  The type C L-rhamnose binding [[CBM67]] family is now on-line in CAZypedia.  '''[[User:Satoshi Kaneko|Satoshi Kaneko]]''' authored the page and '''[[User:Harry Gilbert|Harry Gilbert]]''' acted as responsible curator.  ''Learn more about the structure and function of the [[CBM67]] family on its CAZypedia [[CBM67|page]]''.
 
 
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'''23 November 2018:''' ''Welcome to the CAZypedia fold [[CBM49]]!'' The crystalline cellulose-binding [[CBM49]] CAZypedia page was authored by '''[[User:Breeanna Urbanowicz|Breeanna Urbanowicz]]''' and '''[[User:Elizabeth Ficko-Blean|Elizabeth Ficko-Blean]]'''.  '''[[User:Breeanna Urbanowicz|Breeanna Urbanowicz]]''' also acted as responsible curator.  There is experimental evidence that rice [[CBM49]] is cleaved post-translationally in vivo which probably plays an important role in plant growth. ''Find out more about the functionally interesting family 49 CBMs [[CBM49|here]]''.
 
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'''11 October 2018:''' ''Fall ushers in a new CAZypedia CBM family page.''  The chitin-binding and lytic polysaccharide monooxygenase associated [[CBM73]] family is described in detail.  '''[[User:Zarah Forsberg|Zarah Forsberg]]''' authored the page and '''[[User:Gustav Vaaje-Kolstad|Gustav Vaaje-Kolstad]]''' acted as responsible curator. ''Learn more about the [[CBM73]] family on its CAZypedia [[CBM73|page]]''.
 
 
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'''24 September 2018:''' ''Revenge of the Ruminococci Part Deux.'' Two more CBM families from Ruminococcal bacteria are ready for reading. The [[CBM79]] and [[CBM80]] CAZypedia pages were authored by '''[[User:Immacolata Venditto|Immacolata Venditto]]''' and '''[[User:Harry Gilbert|Harry Gilbert]]''' acted as responsible curator. These CBMs are important for enzyme targeting but also for targeting the entire cellulosome complex to substrate. ''More information on the [[CBM79]] and [[CBM80]] families can be found on their respective CAZypedia pages.''
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'''2 May 2024:''' ''CBDs I to X... A major milestone!'' '''CBM families 1 to 10 are now complete!''' These are the old CBD (cellulose-binding domain) families, which used to have roman numerals as part of their nomenclature. A special thank you to all the authors and responsible curators who have contributed to this major milestone. Go have a peek at each of these old school families on their respective ''CAZypedia'' pages: '''[[CBM1]], [[CBM2]], [[CBM3]], [[CBM4]], [[CBM5]], [[CBM6]], [[CBM7]], [[CBM8]], [[CBM9]], and [[CBM10]]'''.
 
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Latest revision as of 09:56, 22 July 2024

19 July 2024: Chalk-up one more for the GTs! The Glycosyltransferase Family 47 page joined the small group of Curator Approved Glycosyltransferase Families pages in CAZypedia today. This entry was authored by Ph.D. students Daniel Tehrani and Charlie Corulli, and Curated by Breeanna Urbanowicz with input from Kelley Moremen. Widely represented in plants, GT47 members are anomer-inverting glycosyltransferases, which are involved in the biosynthesis of several cell wall matrix polysaccharides. Representatives from mammals are involved in heparin biosynthesis. Correspondingly, members of GH47 have diverse substrate specificities, including the transfer of both anionic and neutral monosaccharides to polysaccharides. This is a great example where two keen Ph.D. students worked with their supervisors to create a valuable page for the scientific community. We encourage others to follow their lead, on your favorite family!


9 July 2024: Yet another new family of beta-1,2-glucan-active enzymes! Today, Masahiro Nakajima Curator Approved the Glycoside Hydrolase Family 186 page by Sei Motouchi. GH186 is a family of anomer-inverting enzymes from bacteria, members of which are specific for beta-1,2-glucans. Intriguingly, although some GH186 members work as classic glycoside hydrolases, others perform transglycosylation by wrapping the sugar chain around in the active-site, to position the 6-OH group of a terminal glucosyl unit for direct attack. Also notable, GH186 members appear to use an extended chain of water molecules to relay acceptor deprotonation by the general base residue, i.e. a Grotthuss mechanism. Check out the GH186 page to learn more about these interesting enzymes, and make sure to see the GH189, GH144, and GH162 pages from this same group.


2 May 2024: CBDs I to X... A major milestone! CBM families 1 to 10 are now complete! These are the old CBD (cellulose-binding domain) families, which used to have roman numerals as part of their nomenclature. A special thank you to all the authors and responsible curators who have contributed to this major milestone. Go have a peek at each of these old school families on their respective CAZypedia pages: CBM1, CBM2, CBM3, CBM4, CBM5, CBM6, CBM7, CBM8, CBM9, and CBM10.