Detail Information for IndEnz0005001016
IED ID IndEnz0005001016
Enzyme Type ID lipase001016
Protein Name Cellulase/esterase CelE
CtCel5C-CE2

Includes: Cellulase E
EC 3.2.1.4
CtCel5C
Endo-1,4-beta-glucanase E
EGE
Endoglucanase E
; Acetylxylan esterase / glucomannan deacetylase
EC 3.1.1.-
EC 3.1.1.72
CtCE2
Gene Name celE Cthe_0797
Organism Acetivibrio thermocellus (strain ATCC 27405 / DSM 1237 / JCM 9322 / NBRC 103400 / NCIMB 10682 / NRRL B-4536 / VPI 7372) (Hungateiclostridium thermocellum)
Taxonomic Lineage cellular organisms Bacteria Terrabacteria group Firmicutes Clostridia Eubacteriales Oscillospiraceae Acetivibrio Acetivibrio thermocellus (Hungateiclostridium thermocellum) Acetivibrio thermocellus (strain ATCC 27405 / DSM 1237 / JCM 9322 / NBRC 103400 / NCIMB 10682 / NRRL B-4536 / VPI 7372) (Hungateiclostridium thermocellum)
Enzyme Sequence MKKIVSLVCVLVMLVSILGSFSVVAASPVKGFQVSGTKLLDASGNELVMRGMRDISAIDLVKEIKIGWNLGNTLDAPTETAWGNPRTTKAMIEKVREMGFNAVRVPVTWDTHIGPAPDYKIDEAWLNRVEEVVNYVLDCGMYAIINVHHDNTWIIPTYANEQRSKEKLVKVWEQIATRFKDYDDHLLFETMNEPREVGSPMEWMGGTYENRDVINRFNLAVVNTIRASGGNNDKRFILVPTNAATGLDVALNDLVIPNNDSRVIVSIHAYSPYFFAMDVNGTSYWGSDYDKASLTSELDAIYNRFVKNGRAVIIGEFGTIDKNNLSSRVAHAEHYAREAVSRGIAVFWWDNGYYNPGDAETYALLNRKTLSWYYPEIVQALMRGAGVEPLVSPTPTPTLMPTPSPTVTANILYGDVNGDGKINSTDCTMLKRYILRGIEEFPSPSGIIAADVNADLKINSTDLVLMKKYLLRSIDKFPAEDSQTPDEDNPGILYNGRFDFSDPNGPKCAWSGSNVELNFYGTEASVTIKSGGENWFQAIVDGNPLPPFSVNATTSTVKLVSGLAEGAHHLVLWKRTEASLGEVQFLGFDFGSGKLLAAPKPLERKIEFIGDSITCAYGNEGTSKEQSFTPKNENSYMSYAAITARNLNASANMIAWSGIGLTMNYGGAPGPLIMDRYPYTLPYSGVRWDFSKYVPQVVVINLGTNDFSTSFADKTKFVTAYKNLISEVRRNYPDAHIFCCVGPMLWGTGLDLCRSYVTEVVNDCNRSGDLKVYFVEFPQQDGSTGYGEDWHPSIATHQLMAERLTAEIKNKLGW
Enzyme Length 814
Uniprot Accession Number P10477
Absorption
Active Site ACT_SITE 193; /note=Proton donor; for cellulase activity; /evidence=ECO:0000250; ACT_SITE 316; /note=Nucleophile; for cellulase activity; /evidence=ECO:0000250|UniProtKB:A7LXT7; ACT_SITE 612; /note=Nucleophile; for esterase activity; /evidence=ECO:0000305|PubMed:19338387
Activity Regulation ACTIVITY REGULATION: Esterase activity of the CE2 module is inhibited when this domain binds to cellohexaose or beta-glucan. {ECO:0000269|PubMed:19338387}.
Binding Site
Calcium Binding
catalytic Activity CATALYTIC ACTIVITY: Reaction=Endohydrolysis of (1->4)-beta-D-glucosidic linkages in cellulose, lichenin and cereal beta-D-glucans.; EC=3.2.1.4; Evidence={ECO:0000269|PubMed:1991028, ECO:0000269|PubMed:3066698}; CATALYTIC ACTIVITY: Reaction=Deacetylation of xylans and xylo-oligosaccharides.; EC=3.1.1.72; Evidence={ECO:0000269|PubMed:19338387};
DNA Binding
EC Number 3.2.1.4; 3.1.1.-; 3.1.1.72
Enzyme Function FUNCTION: Multifunctional enzyme involved in the degradation of plant cell wall polysaccharides. Displays endoglucanase activity against carboxymethyl cellulose (CMC) and barley beta-glucan (PubMed:3066698, PubMed:1991028). Also catalyzes the deacetylation of acetylated birchwood xylan and glucomannan, with a preference for the latter, and of the synthetic substrate 4-nitrophenyl acetate (4-NPAc) (PubMed:19338387). {ECO:0000269|PubMed:19338387, ECO:0000269|PubMed:1991028, ECO:0000269|PubMed:3066698}.
Temperature Dependency
PH Dependency
Pathway PATHWAY: Glycan metabolism; cellulose degradation. {ECO:0000269|PubMed:3066698}.; PATHWAY: Glycan degradation; xylan degradation. {ECO:0000269|PubMed:19338387}.
nucleotide Binding
Features Active site (3); Beta strand (14); Chain (1); Domain (1); Helix (13); Metal binding (15); Mutagenesis (3); Region (2); Sequence conflict (1); Signal peptide (1); Site (3); Turn (2)
Keywords 3D-structure;Calcium;Carbohydrate metabolism;Cellulose degradation;Direct protein sequencing;Glycosidase;Hydrolase;Metal-binding;Multifunctional enzyme;Polysaccharide degradation;Reference proteome;Secreted;Signal
Interact With
Induction
Subcellular Location SUBCELLULAR LOCATION: Secreted {ECO:0000305}.
Modified Residue
Post Translational Modification
Signal Peptide SIGNAL 1..34; /evidence=ECO:0000269|PubMed:3066698
Structure 3D X-ray crystallography (3)
Cross Reference PDB 2WAB; 2WAO; 4IM4;
Mapped Pubmed ID 33454012;
Motif
Gene Encoded By
Mass 90,230
Kinetics BIOPHYSICOCHEMICAL PROPERTIES: Kinetic parameters: KM=165 uM for 4-nitrophenyl acetate {ECO:0000269|PubMed:19338387}; KM=2.7 mM for acetylated birchwood xylan {ECO:0000269|PubMed:19338387}; KM=0.019 mM for acetylated glucomannan {ECO:0000269|PubMed:19338387}; Note=kcat is 7032 min(-1) for the deacetylation of 4-nitrophenyl acetate. kcat is 12 min(-1) for the deacetylation of birchwood xylan. kcat is 1.1 min(-1) for the deacetylation of glucomannan. {ECO:0000269|PubMed:19338387};
Metal Binding METAL 415; /note=Calcium 1; /evidence=ECO:0000255|PROSITE-ProRule:PRU01102; METAL 417; /note=Calcium 1; /evidence=ECO:0000255|PROSITE-ProRule:PRU01102; METAL 419; /note=Calcium 1; /evidence=ECO:0000255|PROSITE-ProRule:PRU01102; METAL 420; /note=Calcium 1; via amide nitrogen; /evidence=ECO:0000255|PROSITE-ProRule:PRU01102; METAL 421; /note=Calcium 1; via carbonyl oxygen; /evidence=ECO:0000255|PROSITE-ProRule:PRU01102; METAL 426; /note=Calcium 1; /evidence=ECO:0000255|PROSITE-ProRule:PRU01102; METAL 451; /note=Calcium 2; /evidence=ECO:0000255|PROSITE-ProRule:PRU01102; METAL 451; /note=Calcium 3; /evidence=ECO:0000255|PROSITE-ProRule:PRU01102; METAL 452; /note=Calcium 2; via amide nitrogen; /evidence=ECO:0000255|PROSITE-ProRule:PRU01102; METAL 453; /note=Calcium 3; /evidence=ECO:0000255|PROSITE-ProRule:PRU01102; METAL 455; /note=Calcium 3; /evidence=ECO:0000255|PROSITE-ProRule:PRU01102; METAL 457; /note=Calcium 2; via carbonyl oxygen; /evidence=ECO:0000255|PROSITE-ProRule:PRU01102; METAL 457; /note=Calcium 3; via carbonyl oxygen; /evidence=ECO:0000255|PROSITE-ProRule:PRU01102; METAL 462; /note=Calcium 2; /evidence=ECO:0000255|PROSITE-ProRule:PRU01102; METAL 462; /note=Calcium 3; /evidence=ECO:0000255|PROSITE-ProRule:PRU01102
Rhea ID
Cross Reference Brenda 3.2.1.4;