ExplorEnz: Changes log The Enzyme Database


 

Changes Log

The entries in the log are arranged in chronological order, with the most recent changes at the top. If you wish to search for changes to a particular enzyme, then enter ec:x.y.z.w (repacing x.y.z.w by the relevant EC number) in the search text box at the top of the page. Other terms can be entered in the text box to limit the results obtained.



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ID Date/Time EC/Citation Key Table Field Changed From Changed To
 597  2005-12-08 12:10:17  1.14.13.101  entry  other_names    senecionine monooxygenase (N-oxide-forming); SNO
 596  2005-12-08 12:10:17  1.14.13.101  entry  reaction     senecionine + NADPH + H+ + O2 = senecionine N-oxide + NADP+ + H2O
 595  2005-12-08 12:10:17  1.14.13.101  entry  common_name    senecionine N-oxygenase
 594  2005-12-08 12:10:17  1.14.13.101  entry  ec_num    1.14.13.101
 617  2005-12-08 12:10:18  1.14.13.101  entry  glossary    
 607  2005-12-08 12:10:18  1.14.13.101  entry  cas_num    220581-68-0
 606  2005-12-08 12:10:18  1.14.13.101  entry  diagram    
 644  2005-12-08 12:25:05  2.7.4.22  entry  glossary    
 634  2005-12-08 12:25:05  2.7.4.22  entry  cas_num    
 633  2005-12-08 12:25:05  2.7.4.22  entry  diagram    
 631  2005-12-08 12:25:05  2.7.4.22  entry  serial    22
 630  2005-12-08 12:25:05  2.7.4.22  entry  subsubclass    4
 629  2005-12-08 12:25:05  2.7.4.22  entry  subclass    7
 628  2005-12-08 12:25:05  2.7.4.22  entry  class    2
 627  2005-12-08 12:25:05  2.7.4.22  entry  links    
 626  2005-12-08 12:25:05  2.7.4.22  entry  comments    This enzyme is strictly specific for UMP as substrate and is used by prokaryotes in the de novo synthesis of pyrimidines, in contrast to eukaryotes, which use the dual-specificity enzyme UMP/CMP kinase (EC 2.7.4.14) for the same purpose [2]. This enzyme is the subject of feedback regulation, being inhibited by UTP and activated by GTP [1].
 625  2005-12-08 12:25:05  2.7.4.22  entry  sys_name    ATP:UMP phosphotransferase
 624  2005-12-08 12:25:05  2.7.4.22  entry  other_names    uridylate kinase; UMPK; uridine monophosphate kinase; PyrH; UMP-kinase; SmbA
 623  2005-12-08 12:25:05  2.7.4.22  entry  reaction    ATP + UMP = ADP + UDP
 622  2005-12-08 12:25:05  2.7.4.22  entry  common_name    UMP kinase
 621  2005-12-08 12:25:05  2.7.4.22  entry  ec_num    2.7.4.22
 674  2005-12-09 03:29:51  2.4.1.243  entry  glossary    
 664  2005-12-09 03:29:51  2.4.1.243  entry  cas_num    
 663  2005-12-09 03:29:51  2.4.1.243  entry  diagram    
 661  2005-12-09 03:29:51  2.4.1.243  entry  serial    243
 660  2005-12-09 03:29:51  2.4.1.243  entry  subsubclass    1
 659  2005-12-09 03:29:51  2.4.1.243  entry  subclass    4
 658  2005-12-09 03:29:51  2.4.1.243  entry  class    2
 657  2005-12-09 03:29:51  2.4.1.243  entry  links    
 656  2005-12-09 03:29:51  2.4.1.243  entry  comments    This enzyme catalyses the transfer of the terminal (2->1)-linked beta-D-fructosyl group of a mono- or oligosaccharide substituent on O-1 of the fructose residue of sucrose onto O-6 of its glucose residue [1]. For example, if 1-kestose [1F-(beta-D-fructofuranosyl)sucrose] is both the donor and recipient in the reaction shown above, i.e., if m = 1 and n = 1, then the products will be sucrose and 6G-beta-D-fructofuranosylsucrose. In this notation, the superscripts F and G are used to specify whether the fructose or glucose residue of the sucrose carries the substituent. Alternatively, this may be indicated by the presence and/or absence of primes (see <a href =
 655  2005-12-09 03:29:51  2.4.1.243  entry  sys_name    1F-oligo[ beta-D-fructofuranosyl-(2->1)-]sucrose 6G-beta-D-fructotransferase
 654  2005-12-09 03:29:51  2.4.1.243  entry  other_names    fructan:fructan 6G-fructosyltransferase; 1F(1beta-D-fructofuranosyl)msucrose:1F(1beta-D-fructofuranosyl)nsucrose 6G-fructosyltransferase; 6G-FFT; 6G-FT; 6G-fructotransferase
 653  2005-12-09 03:29:51  2.4.1.243  entry  reaction    [1-beta-D-fructofuranosyl-(2->1)-]m+1 alpha-D-glucopyranoside + [1-beta-D-fructofuranosyl-(2->1)-]n+1 alpha-D-glucopyranoside = [1-beta-D-fructofuranosyl-(2->1)-]m alpha-D-glucopyranoside + [1-beta-D-fructofuranosyl-(2->1)-]n+1 beta-D-fructofuranosyl-(2->6)-alpha-D-glucopyranoside (m > 0; n ≥ 0)
 652  2005-12-09 03:29:51  2.4.1.243  entry  common_name    6G-fructosyltransferase
 651  2005-12-09 03:29:51  2.4.1.243  entry  ec_num    2.4.1.243
 707  2005-12-09 04:01:56  2.3.1.177  entry  ec_num    2.3.1.177
 708  2005-12-09 04:01:56  2.3.1.177  entry  common_name    diaminobutyrate acetyltransferase
 709  2005-12-09 04:01:56  2.3.1.177  entry  reaction    acetyl-CoA + L-2,4-diaminobutanoate = CoA + N-acetyl-L-2,4-diaminobutyrate
 710  2005-12-09 04:01:56  2.3.1.177  entry  other_names    L-2,4-diaminobutyrate acetyltransferase; L-2,4-diaminobutanoate acetyltransferase; EctA; diaminobutyric acid acetyltransferase; DABA acetyltransferase; 2,4-diaminobutanoate acetyltransferase; DAB acetyltransferase; DABAcT
 711  2005-12-09 04:01:56  2.3.1.177  entry  sys_name    acetyl-CoA:L-2,4-diaminobutanoate acetyltransferase
 712  2005-12-09 04:01:56  2.3.1.177  entry  comments     Requires Na+ or K+ for maximal activity [3]. Ornithine, lysine, aspartate, and alpha-, beta- and gamma-aminobutyrate cannot act as substrates [3]. However, acetyl-CoA can be replaced by propanoyl-CoA, although the reaction proceeds more slowly [3]. Forms part of the ectoine-biosynthesis pathway, the other enzymes involved being EC 2.6.1.76, diaminobutyrate—2-oxoglutarate transaminase and EC 4.2.1.108, ectoine synthase.
 713  2005-12-09 04:01:56  2.3.1.177  entry  links    
 714  2005-12-09 04:01:56  2.3.1.177  entry  class    2
 715  2005-12-09 04:01:56  2.3.1.177  entry  subclass    3
 716  2005-12-09 04:01:56  2.3.1.177  entry  subsubclass    1
 717  2005-12-09 04:01:56  2.3.1.177  entry  serial    177
 719  2005-12-09 04:01:56  2.3.1.177  entry  diagram    
 720  2005-12-09 04:01:56  2.3.1.177  entry  cas_num    
 730  2005-12-09 04:01:56  2.3.1.177  entry  glossary    
 732  2005-12-09 04:24:32  2.4.1.243  entry  comments  This enzyme catalyses the transfer of the terminal (2->1)-linked beta-D-fructosyl group of a mono- or oligosaccharide substituent on O-1 of the fructose residue of sucrose onto O-6 of its glucose residue [1]. For example, if 1-kestose [1F-(beta-D-fructofuranosyl)sucrose] is both the donor and recipient in the reaction shown above, i.e., if m = 1 and n = 1, then the products will be sucrose and 6G-beta-D-fructofuranosylsucrose. In this notation, the superscripts F and G are used to specify whether the fructose or glucose residue of the sucrose carries the substituent. Alternatively, this may be indicated by the presence and/or absence of primes (see <a href =  This enzyme catalyses the transfer of the terminal (2->1)-linked beta-D-fructosyl group of a mono- or oligosaccharide substituent on O-1 of the fructose residue of sucrose onto O-6 of its glucose residue [1]. For example, if 1-kestose [1F-(beta-D-fructofuranosyl)sucrose] is both the donor and recipient in the reaction shown above, i.e., if m = 1 and n = 1, then the products will be sucrose and 6G-beta-D-fructofuranosylsucrose. In this notation, the superscripts F and G are used to specify whether the fructose or glucose residue of the sucrose carries the substituent. Alternatively, this may be indicated by the presence and/or absence of primes (see <a target = "new" href = "http://www.chem.qmul.ac.uk/iupac/2carb/36.html#362">http://www.chem.qmul.ac.uk/iupac/2carb/36.html#362</a>). Sucrose cannot be a donor substrate in the reaction (i.e. m cannot be zero) and inulin cannot act as an acceptor. Side reactions catalysed are transfer of a beta-D-fructosyl group between compounds of the structure 1F-(1-beta-D-fructofuranosyl)m-6G-(1-beta-D-fructofuranosyl)nsucrose, where m >= 0 and n = 1 for the donor, and m >= 0 and n >= 0 for the acceptor.
 760  2005-12-09 04:34:12  4.2.1.108  entry  ec_num    4.2.1.108
 761  2005-12-09 04:34:12  4.2.1.108  entry  common_name    ectoine synthase
 762  2005-12-09 04:34:12  4.2.1.108  entry  reaction    N-acetyl-L-2,4-diaminobutyrate = L-ectoine + H2O
 763  2005-12-09 04:34:12  4.2.1.108  entry  other_names    N-acetyldiaminobutyrate dehydratase; N-acetyldiaminobutanoate dehydratase; L-ectoine synthase; EctC
 764  2005-12-09 04:34:12  4.2.1.108  entry  sys_name     N-acetyl-L-2,4-diaminobutyrate hydro-lyase
 765  2005-12-09 04:34:12  4.2.1.108  entry  comments    Ectoine is an osmoprotectant that is found in halophilic eubacteria. This is the third enzyme in the ectoine-biosynthesis pathway, the other enzymes involved being EC 2.6.1.76, diaminobutyrate—2-oxoglutarate transaminase and EC 2.3.1.177, diaminobutyrate acetyltransferase [1,2].
 766  2005-12-09 04:34:12  4.2.1.108  entry  links    
 767  2005-12-09 04:34:12  4.2.1.108  entry  class    4
 768  2005-12-09 04:34:12  4.2.1.108  entry  subclass    2
 769  2005-12-09 04:34:12  4.2.1.108  entry  subsubclass    1
 770  2005-12-09 04:34:12  4.2.1.108  entry  serial    108
 772  2005-12-09 04:34:12  4.2.1.108  entry  diagram    
 773  2005-12-09 04:34:12  4.2.1.108  entry  cas_num    
 783  2005-12-09 04:34:12  4.2.1.108  entry  glossary    ectoine = 1,4,5,6-tetrahydro-2-methyl-4-pyrimidinecarboxylate
 792  2005-12-09 04:48:20  1.13.11.19  entry  comments  An iron protein.  A non-heme iron protein that is involved in the biosynthesis of taurine. Requires catalytic amounts of a cofactor-like compound, such as sulfur, sufide, selenium or methylene blue for maximal activity. 3-Aminopropanethiol (homocysteamine) and 2-mercaptoethanol can also act as substrates, but glutathione, cysteine, and cysteine ethyl- and methyl esters are not good substrates [1,3].
 791  2005-12-09 04:48:20  1.13.11.19  entry  sys_name  cysteamine:oxygen oxidoreductase   2-aminoethanethiol:oxygen oxidoreductase
 790  2005-12-09 04:48:20  1.13.11.19  entry  other_names  persulfurase; cysteamine oxygenase  persulfurase; cysteamine oxygenase; cysteamine:oxygen oxidoreductase
 789  2005-12-09 04:48:20  1.13.11.19  entry  reaction  cysteamine + O2 = hypotaurine   2-aminoethanethiol + O2 = hypotaurine
 803  2005-12-09 05:25:21  2.3.1.11  entry  comments    2-Sulfanylethanol (2-mercaptoethanol) can act as a substrate [1].
 802  2005-12-09 05:25:21  2.3.1.11  entry  sys_name  acetyl-CoA:thioethanolamine S-acetyltransferase  acetyl-CoA:2-aminoethanethiol S-acetyltransferase
 801  2005-12-09 05:25:21  2.3.1.11  entry  other_names  thioltransacetylase B; thioethanolamine acetyltransferase  thioltransacetylase B; thioethanolamine acetyltransferase; acetyl-CoA:thioethanolamine S-acetyltransferase
 800  2005-12-09 05:25:21  2.3.1.11  entry  reaction  acetyl-CoA + thioethanolamine = CoA + S-acetylthioethanolamine  acetyl-CoA + 2-aminoethanethiol = CoA + S-(2-aminoethyl) thioacetate
 817  2005-12-09 05:32:29  3.6.3.44  entry  comments  ABC-type (ATP-binding cassette-type) ATPase, characterised by the presence of two similar ATP-binding domains. Does not undergo phosphorylation during the transport process. Enzymes of Gram-positive bacteria and eukaryotic cells that export a number of drugs, with unusual specificity, covering various groups of unrelated substances, while ignoring some that are closely related structurally. Several distinct enzymes may be present in a single eukaryotic cell. Many of them transport glutathione conjugates with drugs. Some also show some 'flippase' (Mg2+-ATPase; EC 3.6.3.1) activity.  ABC-type (ATP-binding cassette-type) ATPase, characterized by the presence of two similar ATP-binding domains. Does not undergo phosphorylation during the transport process. The enzyme from Gram-positive bacteria and eukaryotic cells export a number of drugs, with unusual specificity, covering various groups of unrelated substances, while ignoring some that are closely related structurally. Several distinct enzymes may be present in a single eukaryotic cell. Many of them transport glutathione—drug conjugates. Some also show some 'flippase' (Mg2+-ATPase; EC 3.6.3.1) activity.
 816  2005-12-09 05:32:29  3.6.3.44  entry  other_names  multidrug-resistance protein, P-glycoprotein  multidrug-resistance protein; MDR protein; P-glycoprotein; pleiotropic-drug-resistance protein; PDR protein; steroid-transporting ATPase; ATP phosphohydrolase (steroid-exporting)
 838  2005-12-11 09:37:07  3.6.3.45  hist  note    steroid-transporting ATPase . Now included with EC 3.6.3.44, xenobiotic-transporting ATPase
 830  2005-12-11 09:37:07  3.6.3.45  entry  links  BRENDA, ERGO, EXPASY, GO, IUBMB, KEGG  
 829  2005-12-11 09:37:07  3.6.3.45  entry  comments  ABC-type (ATP-binding cassette-type) ATPase, characterised by the presence of two similar ATP-binding domains. Does not undergo phosphorylation during the transport process. A yeast protein that exports a variety of xenobiotics, especially steroids.  
 828  2005-12-11 09:37:07  3.6.3.45  entry  sys_name  ATP phosphohydrolase (steroid-exporting)  
 827  2005-12-11 09:37:07  3.6.3.45  entry  reaction  ATP + H2O + steroidin = ADP + phosphate + steroidout  
 826  2005-12-11 09:37:07  3.6.3.45  entry  common_name  steroid-transporting ATPase  
 863  2005-12-11 09:40:48  3.2.1.160  entry  glossary    
 861  2005-12-11 09:40:48  3.2.1.160  hist  note    
 853  2005-12-11 09:40:48  3.2.1.160  entry  cas_num    
 852  2005-12-11 09:40:48  3.2.1.160  entry  diagram    
 850  2005-12-11 09:40:48  3.2.1.160  entry  serial    160
 849  2005-12-11 09:40:48  3.2.1.160  entry  subsubclass    1
 848  2005-12-11 09:40:48  3.2.1.160  entry  subclass    2
 847  2005-12-11 09:40:48  3.2.1.160  entry  class    3
 846  2005-12-11 09:40:48  3.2.1.160  entry  links    
 845  2005-12-11 09:40:48  3.2.1.160  entry  comments    The enzyme from Chrysosporium lucknowense is an endoglucanase, i.e. acquires the specificity of EC 3.2.1.151, xyloglucan-specific endo-β-1,4-glucanase, when it acts on linear substrates without bulky substituents on the polymeric backbone (e.g. carboxymethylcellulose). However, it switches to an exoglucanase mode of action when bulky side chains are present (as in the case of xyloglucan). The enzyme can also act on barley beta-glucan, but more slowly.
 844  2005-12-11 09:40:48  3.2.1.160  entry  sys_name     [(1->6)-alpha-D-xylo]-(1->4)-beta-D-glucan glucohydrolase
 843  2005-12-11 09:40:48  3.2.1.160  entry  other_names    Cel74A
 842  2005-12-11 09:40:48  3.2.1.160  entry  reaction     xyloglucan + H2O = xyloglucan oligosaccharides (exohydrolysis of 1,4-beta-D-glucosidic linkages in xyloglucan)
 841  2005-12-11 09:40:48  3.2.1.160  entry  common_name    xyloglucan-specific exo-beta-1,4-glucanase
 840  2005-12-11 09:40:48  3.2.1.160  entry  ec_num    3.2.1.160
 866  2005-12-11 09:42:42  3.2.1.151  entry  sys_name  1,4-beta-D-glucan glucanohydrolase  [(1->6)-alpha-D-xylo]-(1->4)-beta-D-glucan glucanohydrolase
 865  2005-12-11 09:42:42  3.2.1.151  entry  other_names  XEG; xyloglucan endo-beta-1,4-glucanase; xyloglucanase; xyloglucanendohydrolase (XH)  XEG; xyloglucan endo-beta-1,4-glucanase; xyloglucanase; xyloglucanendohydrolase (XH); 1,4-beta-D-glucan glucanohydrolase
 876  2005-12-11 09:48:06  2.4.1.195  entry  other_names  desulfoglucosinolate-uridine diphosphate glucosyltransferase; uridine diphosphoglucose-thiohydroximate glucosyltransferase  desulfoglucosinolate-uridine diphosphate glucosyltransferase; uridine diphosphoglucose-thiohydroximate glucosyltransferase; thiohydroximate beta-D-glucosyltransferase; UDPG:thiohydroximate glucosyltransferase; thiohydroximate S-glucosyltransferase; thiohydroximate glucosyltransferase; UDP-glucose:thiohydroximate S-β-D-glucosyltransferase
 875  2005-12-11 09:48:06  2.4.1.195  entry  reaction  UDP-glucose + phenylthioacetohydroximate = UDP + desulfoglucotropeolin  UDP-glucose + N-hydroxy-2-phenylethanethioamide = UDP + desulfoglucotropeolin
 874  2005-12-11 09:48:06  2.4.1.195  entry  common_name  thiohydroximate beta-D-glucosyltransferase  N-hydroxythioamide S-beta-glucosyltransferase
 889  2005-12-11 09:58:05  2.3.1.109  entry  comments  Also acts on L-ornithine.  Also acts on L-ornithine. This is the first enzyme in the arginine succinyltransferase (AST) pathway for the catabolism of arginine [1]. This pathway converts the carbon skeleton of arginine into glutamate, with the concomitant production of ammonia and conversion of succinyl-CoA into succinate and CoA. The five enzymes involved in this pathway are EC 2.3.1.109 (arginine N-succinyltransferase), EC 3.5.3.23 (N-succinylarginine dihydrolase), EC 2.6.1.81 (succinylornithine transaminase), EC 1.2.1.71 (succinylglutamate semialdehyde dehydrogenase) and EC 3.5.1.96 (succinylglutamate desuccinylase) [2,6].
 888  2005-12-11 09:58:05  2.3.1.109  entry  other_names  arginine succinyltransferase  arginine succinyltransferase; AstA; arginine and ornithine N2-succinyltransferase; AOST; AST
 923  2005-12-11 10:09:00  3.5.3.23  entry  glossary    
 913  2005-12-11 10:09:00  3.5.3.23  entry  cas_num    
 912  2005-12-11 10:09:00  3.5.3.23  entry  diagram    
 910  2005-12-11 10:09:00  3.5.3.23  entry  serial    23
 909  2005-12-11 10:09:00  3.5.3.23  entry  subsubclass    3
 908  2005-12-11 10:09:00  3.5.3.23  entry  subclass    5
 907  2005-12-11 10:09:00  3.5.3.23  entry  class    3
 906  2005-12-11 10:09:00  3.5.3.23  entry  links    
 905  2005-12-11 10:09:00  3.5.3.23  entry  comments    Arginine, N2-acetylarginine and N2-glutamylarginine do not act as substrates [3]. This is the second enzyme in the arginine succinyltransferase (AST) pathway for the catabolism of arginine [1]. This pathway converts the carbon skeleton of arginine into glutamate, with the concomitant production of ammonia and conversion of succinyl-CoA into succinate and CoA. The five enzymes involved in this pathway are EC 2.3.1.109 (arginine N-succinyltransferase), EC 3.5.3.23 (N-succinylarginine dihydrolase), EC 2.6.1.81 (succinylornithine transaminase), EC 1.2.1.71 (succinylglutamate semialdehyde dehydrogenase) and EC 3.5.1.96 (succinylglutamate desuccinylase).
 904  2005-12-11 10:09:00  3.5.3.23  entry  sys_name     N2-succinyl-L-arginine iminohydrolase (decarboxylating)
 903  2005-12-11 10:09:00  3.5.3.23  entry  other_names     N2-succinylarginine dihydrolase; arginine succinylhydrolase; SADH; AruB; AstB
 902  2005-12-11 10:09:00  3.5.3.23  entry  reaction    N2-succinyl-L-arginine + 2 H2O = N2-succinyl-L-ornithine + 2 NH3 + CO2
 901  2005-12-11 10:09:00  3.5.3.23  entry  common_name    N-succinylarginine dihydrolase
 900  2005-12-11 10:09:00  3.5.3.23  entry  ec_num    3.5.3.23
 929  2005-12-11 10:12:40  2.6.1.81  entry  other_names     succinylornithine aminotransferase; N2-succinylornithine 5-aminotransferase; AstC; SOAT
 928  2005-12-11 10:12:40  2.6.1.81  entry  reaction    N2-succinyl-L-ornithine + 2-oxoglutarate = N-succinyl-L-glutamate 5-semialdehyde + L-glutamate
 927  2005-12-11 10:12:40  2.6.1.81  entry  common_name    succinylornithine transaminase
 926  2005-12-11 10:12:40  2.6.1.81  entry  ec_num    2.6.1.81
 939  2005-12-11 10:12:40  2.6.1.81  entry  cas_num    

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