ID   XYNA_GEOSE              Reviewed;         210 AA.
AC   P45705;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   15-JUL-1998, sequence version 2.
DT   25-MAY-2022, entry version 85.
DE   RecName: Full=Endo-1,4-beta-xylanase A;
DE            Short=Xylanase A;
DE            EC=3.2.1.8;
DE   AltName: Full=1,4-beta-D-xylan xylanohydrolase A;
DE   Flags: Precursor;
GN   Name=xynA;
OS   Geobacillus stearothermophilus (Bacillus stearothermophilus).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Geobacillus.
OX   NCBI_TaxID=1422;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=No. 236;
RA   Cho S., Choi Y.;
RT   "Nucleotide sequence analysis of an endo-xylanase gene (xynA) from Bacillus
RT   stearothermophilus.";
RL   J. Microbiol. Biotechnol. 5:117-124(1995).
RN   [2]
RP   SEQUENCE REVISION.
RA   Cho S., Choi Y.;
RL   Submitted (NOV-1997) to the EMBL/GenBank/DDBJ databases.
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   -!- SIMILARITY: Belongs to the glycosyl hydrolase 11 (cellulase G) family.
CC       {ECO:0000305}.
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DR   EMBL; U15985; AAB72117.1; -; Genomic_DNA.
DR   AlphaFoldDB; P45705; -.
DR   SMR; P45705; -.
DR   CAZy; GH11; Glycoside Hydrolase Family 11.
DR   CLAE; XYN11A_GEOST; -.
DR   UniPathway; UPA00114; -.
DR   GO; GO:0031176; F:endo-1,4-beta-xylanase activity; IEA:UniProtKB-EC.
DR   GO; GO:0045493; P:xylan catabolic process; IEA:UniProtKB-UniPathway.
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; Signal; Xylan degradation.
FT   SIGNAL          1..19
FT                   /evidence="ECO:0000255"
FT   CHAIN           20..210
FT                   /note="Endo-1,4-beta-xylanase A"
FT                   /id="PRO_0000007998"
FT   DOMAIN          20..210
FT                   /note="GH11"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01097"
FT   ACT_SITE        104
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU10062"
FT   ACT_SITE        197
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU10063"
SQ   SEQUENCE   210 AA;  23221 MW;  3190CF74C34AAB45 CRC64;
     MKLKKKMLTL LLTASMSFGL FGATSSAATD YWQYWTDGGG MVNAVNGPGG NYSVTWQNTG
     NFVVGKGWTV GSPNRVINYN AGIWEPSGNG YLTLYGWTRN ALIEYYVVDS WGTYRPTGNY
     KGTVNSDGGT YDIYTTMRYN APSIDGTQTF QQFWSVRQSK RPTGSNVSIT FSNHVNAWRS
     KGMNLGSSWA YQVLATEGYQ SSGRSNVTVW