ID   XYNB_ASPNC              Reviewed;         225 AA.
AC   A2Q7I0;
DT   23-MAR-2010, integrated into UniProtKB/Swiss-Prot.
DT   06-MAR-2007, sequence version 1.
DT   25-MAY-2022, entry version 78.
DE   RecName: Full=Probable endo-1,4-beta-xylanase B;
DE            Short=Xylanase B;
DE            EC=3.2.1.8;
DE   AltName: Full=1,4-beta-D-xylan xylanohydrolase B;
DE   AltName: Full=Endo-1,4-beta-xylanase G1;
DE            Short=Xylanase G1;
DE   Flags: Precursor;
GN   Name=xlnB; Synonyms=xynB, xynG1; ORFNames=An01g00780;
OS   Aspergillus niger (strain CBS 513.88 / FGSC A1513).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Eurotiomycetes;
OC   Eurotiomycetidae; Eurotiales; Aspergillaceae; Aspergillus;
OC   Aspergillus subgen. Circumdati.
OX   NCBI_TaxID=425011;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CBS 513.88 / FGSC A1513 / ATCC MYA-4892;
RX   PubMed=17259976; DOI=10.1038/nbt1282;
RA   Pel H.J., de Winde J.H., Archer D.B., Dyer P.S., Hofmann G., Schaap P.J.,
RA   Turner G., de Vries R.P., Albang R., Albermann K., Andersen M.R.,
RA   Bendtsen J.D., Benen J.A.E., van den Berg M., Breestraat S., Caddick M.X.,
RA   Contreras R., Cornell M., Coutinho P.M., Danchin E.G.J., Debets A.J.M.,
RA   Dekker P., van Dijck P.W.M., van Dijk A., Dijkhuizen L., Driessen A.J.M.,
RA   d'Enfert C., Geysens S., Goosen C., Groot G.S.P., de Groot P.W.J.,
RA   Guillemette T., Henrissat B., Herweijer M., van den Hombergh J.P.T.W.,
RA   van den Hondel C.A.M.J.J., van der Heijden R.T.J.M., van der Kaaij R.M.,
RA   Klis F.M., Kools H.J., Kubicek C.P., van Kuyk P.A., Lauber J., Lu X.,
RA   van der Maarel M.J.E.C., Meulenberg R., Menke H., Mortimer M.A.,
RA   Nielsen J., Oliver S.G., Olsthoorn M., Pal K., van Peij N.N.M.E.,
RA   Ram A.F.J., Rinas U., Roubos J.A., Sagt C.M.J., Schmoll M., Sun J.,
RA   Ussery D., Varga J., Vervecken W., van de Vondervoort P.J.J., Wedler H.,
RA   Woesten H.A.B., Zeng A.-P., van Ooyen A.J.J., Visser J., Stam H.;
RT   "Genome sequencing and analysis of the versatile cell factory Aspergillus
RT   niger CBS 513.88.";
RL   Nat. Biotechnol. 25:221-231(2007).
CC   -!- FUNCTION: Endo-1,4-beta-xylanase involved in the hydrolysis of xylan, a
CC       major structural heterogeneous polysaccharide found in plant biomass
CC       representing the second most abundant polysaccharide in the biosphere,
CC       after cellulose. {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Endohydrolysis of (1->4)-beta-D-xylosidic linkages in xylans.;
CC         EC=3.2.1.8;
CC   -!- PATHWAY: Glycan degradation; xylan degradation.
CC   -!- SUBCELLULAR LOCATION: Secreted {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the glycosyl hydrolase 11 (cellulase G) family.
CC       {ECO:0000305}.
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DR   EMBL; AM269952; CAK43456.1; -; Genomic_DNA.
DR   RefSeq; XP_001388522.1; XM_001388485.2.
DR   AlphaFoldDB; A2Q7I0; -.
DR   SMR; A2Q7I0; -.
DR   CAZy; GH11; Glycoside Hydrolase Family 11.
DR   PaxDb; A2Q7I0; -.
DR   EnsemblFungi; CAK43456; CAK43456; An01g00780.
DR   GeneID; 4978152; -.
DR   KEGG; ang:ANI_1_94014; -.
DR   VEuPathDB; FungiDB:An01g00780; -.
DR   HOGENOM; CLU_052631_0_0_1; -.
DR   UniPathway; UPA00114; -.
DR   Proteomes; UP000006706; Chromosome 2R.
DR   GO; GO:0005576; C:extracellular region; ISS:UniProtKB.
DR   GO; GO:0031176; F:endo-1,4-beta-xylanase activity; IDA:AspGD.
DR   GO; GO:0045493; P:xylan catabolic process; IDA:AspGD.
DR   Gene3D; 2.60.120.180; -; 1.
DR   InterPro; IPR013320; ConA-like_dom_sf.
DR   InterPro; IPR013319; GH11/12.
DR   InterPro; IPR018208; GH11_AS_1.
DR   InterPro; IPR033119; GH11_AS_2.
DR   InterPro; IPR033123; GH11_dom.
DR   InterPro; IPR001137; Glyco_hydro_11.
DR   Pfam; PF00457; Glyco_hydro_11; 1.
DR   PRINTS; PR00911; GLHYDRLASE11.
DR   SUPFAM; SSF49899; SSF49899; 1.
DR   PROSITE; PS00776; GH11_1; 1.
DR   PROSITE; PS00777; GH11_2; 1.
DR   PROSITE; PS51761; GH11_3; 1.
PE   3: Inferred from homology;
KW   Carbohydrate metabolism; Glycosidase; Hydrolase;
KW   Polysaccharide degradation; Reference proteome; Secreted; Signal;
KW   Xylan degradation.
FT   SIGNAL          1..18
FT                   /evidence="ECO:0000255"
FT   CHAIN           19..225
FT                   /note="Probable endo-1,4-beta-xylanase B"
FT                   /id="PRO_5000219293"
FT   DOMAIN          37..225
FT                   /note="GH11"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01097"
FT   ACT_SITE        121
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU10062"
FT   ACT_SITE        212
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU10063"
SQ   SEQUENCE   225 AA;  24057 MW;  C4B8BB007AB2B8FD CRC64;
     MLTKNLLLCF AAAKAALAVP HDSVAQRSDA LHMLSERSTP SSTGENNGFY YSFWTDGGGD
     VTYTNGDAGA YTVEWSNVGN FVGGKGWNPG SAQDITYSGT FTPSGNGYLS VYGWTTDPLI
     EYYIVESYGD YNPGSGGTYK GTVTSDGSVY DIYTATRTNA ASIQGTATFT QYWSVRQNKR
     VGGTVTTSNH FNAWAKLGMN LGTHNYQIVA TEGYQSSGSS SITVQ