Glycoside Hydrolase Family 91 - Revision history

Harry Brumer at 15:01, 23 October 2012

2012-10-23T15:01:03Z

Harry Brumer: updated CAZy DB link

2011-05-09T13:33:48Z

updated CAZy DB link

Bernard Henrissat at 08:54, 20 April 2010

2010-04-20T08:54:57Z

Harry Brumer at 08:47, 20 April 2010

2010-04-20T08:47:54Z

Harry Brumer at 08:34, 20 April 2010

2010-04-20T08:34:12Z

Harry Brumer: /* GH91 is a deleted family */

2010-04-16T16:36:47Z

GH91 is a deleted family

Harry Brumer: Created page with '* Responsible Curator: ^^^Bernard Henrissat^^^ ---- === GH91 is a deleted family === Entries in GH91 were transferred to Polysaccharide Lyase Family 19 when it was show…'

2010-01-06T10:13:24Z

Created page with '* Responsible Curator: ^^^Bernard Henrissat^^^ ---- === GH91 is a deleted family === Entries in GH91 were transferred to Polysaccharide Lyase Family 19 when it was show…'

New page

* [[Responsible Curator]]: ^^^Bernard Henrissat^^^
----

=== GH91 is a deleted family ===

Entries in GH91 were transferred to [[Polysaccharide Lyase Family 19]] when it was shown that polysaccharide cleavage occurred via a beta elimination, rather than glycosidic bond hydrolysis.


{| {{Prettytable}}
|-
|{{Hl2}} colspan="2" align="center" |'''CAZy DB links'''
|-
| colspan="2" |http://www.cazy.org/fam/GH91.html
|-
| colspan="2" |http://www.cazy.org/fam/PL19.html
|}


{{CuratorApproved}}
[[Category:Glycoside Hydrolase Families|GH091]]
[[Category:Deleted families]]

@@ Line 1: / Line 1: @@
 <!-- CURATORS: Please replace the {{UnderConstruction}} tag below with {{CuratorApproved}} when the page is ready for wider public consumption -->
-{{UnderConstruction}}
+{{UnassignedPage}}
-* Temporary [[Responsible Curator]]: ^^^Bernard Henrissat^^^
 ----

@@ Line 21: / Line 21: @@
 |{{Hl2}} colspan="2" align="center" |'''CAZy DB link'''
 |-
-| colspan="2" |http://www.cazy.org/fam/GH91.html
+| colspan="2" |{{CAZyDBlink}}GH91.html
 |}
 </div>

@@ Line 29: / Line 29: @@
 Entries in [[Glycoside Hydrolase Family 91]] were reclassified to [[Polysaccharide Lyase Family 19]] on 30 July 2008 due to recommendations of the NC-IUBMB, which stated that these enzymes are lyases, as there is no water involved in the reaction.  Indeed, polysaccharide cleavage in some members occurs via intramolecular hydroxide attack, rather than glycosidic bond hydrolysis (see EC [{{EClink}}4.2.2.17 4.2.2.17] and EC [{{EClink}}4.2.2.18 4.2.2.18]).
-The family was ''re-reclassified'' as [[Glycoside Hydrolase Family 91]] on 20 April 2010 due to direct analogy with the lytic transglycosidases of [[GH23]], [[GH102]], [[GH103]], and [[GH104]].  Additionally, a hydrolase (di-fructofuranose 1,2':2,3' dianhydride hydrolase, DFA-IIIase) has also been found in this family <cite>Sakurai1997 Saito2003</cite>.
+The family was ''placed back'' to [[Glycoside Hydrolase Family 91]] on 20 April 2010 due to direct analogy with the lytic transglycosidases of [[GH23]], [[GH102]], [[GH103]], and [[GH104]] and in particular the observation of a hydrolase (di-fructofuranose 1,2':2,3' dianhydride hydrolase, DFA-IIIase) in this family <cite>Sakurai1997 Saito2003</cite>.
 == Substrate specificities ==

@@ Line 27: / Line 27: @@
 == History of reclassification ==
-Entries in [[Glycoside Hydrolase Family 91]] were originally reclassified to [[Polysaccharide Lyase Family 19]] on 30 July 2008 due to recommendations of the NC-IUBMB, which stated that these enzymes are lyases, as there is no water involved in the reaction.  Indeed, polysaccharide cleavage in some members occurs via intramolecular hydroxide attack, rather than glycosidic bond hydrolysis (see EC [{{EClink}}4.2.2.17 4.2.2.17] and EC [{{EClink}}4.2.2.18 4.2.2.18]).
+Entries in [[Glycoside Hydrolase Family 91]] were reclassified to [[Polysaccharide Lyase Family 19]] on 30 July 2008 due to recommendations of the NC-IUBMB, which stated that these enzymes are lyases, as there is no water involved in the reaction.  Indeed, polysaccharide cleavage in some members occurs via intramolecular hydroxide attack, rather than glycosidic bond hydrolysis (see EC [{{EClink}}4.2.2.17 4.2.2.17] and EC [{{EClink}}4.2.2.18 4.2.2.18]).
 The family was ''re-reclassified'' as [[Glycoside Hydrolase Family 91]] on 20 April 2010 due to direct analogy with the lytic transglycosidases of [[GH23]], [[GH102]], [[GH103]], and [[GH104]].  Additionally, a hydrolase (di-fructofuranose 1,2':2,3' dianhydride hydrolase, DFA-IIIase) has also been found in this family <cite>Sakurai1997 Saito2003</cite>.

@@ Line 1: / Line 1: @@
-* [[Responsible Curator]]: ^^^Bernard Henrissat^^^
+<!-- CURATORS: Please replace the {{UnderConstruction}} tag below with {{CuratorApproved}} when the page is ready for wider public consumption -->
 ----
 <!-- The data in the table below should be updated by the Author/Curator according to current information on the family -->
 {| {{Prettytable}}
 |-
-|{{Hl2}} colspan="2" align="center" |'''CAZy DB links'''
+|{{Hl2}} colspan="2" align="center" |'''Glycoside Hydrolase Family GH91'''
 |-
 | colspan="2" |http://www.cazy.org/fam/GH91.html
 |}
 <!-- This is the end of the table -->
-{{CuratorApproved}}
+== History of reclassification ==
 [[Category:Glycoside Hydrolase Families|GH091]]

@@ Line 4: / Line 4: @@
 === GH91 is a deleted family ===
-Entries in GH91 were transferred to [[Polysaccharide Lyase Family 19]] when it was shown that polysaccharide cleavage occurred via a beta elimination, rather than glycosidic bond hydrolysis.
+Entries in GH91 were transferred to [[Polysaccharide Lyase Family 19]] due to recommendations of the NC-IUBMB; polysaccharide cleavage occurs via intramolecular hydroxide attack, rather than glycosidic bond hydrolysis.
 <!-- The data in the table below should be updated by the Author/Curator according to current information on the family -->