ID   XYNB_THESW              Reviewed;         500 AA.
AC   O30360;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-JAN-1998, sequence version 1.
DT   25-MAY-2022, entry version 66.
DE   RecName: Full=Beta-xylosidase;
DE            EC=3.2.1.37;
DE   AltName: Full=1,4-beta-D-xylan xylohydrolase;
DE   AltName: Full=Xylan 1,4-beta-xylosidase;
GN   Name=xynB; Synonyms=xylB;
OS   Thermoanaerobacterium saccharolyticum (strain DSM 8691 / JW/SL-YS485).
OC   Bacteria; Firmicutes; Clostridia; Thermoanaerobacterales;
OC   Thermoanaerobacterales Family III. Incertae Sedis; Thermoanaerobacterium.
OX   NCBI_TaxID=1094508;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Lorenz W.W., Wiegel J.;
RL   Submitted (MAY-1997) to the EMBL/GenBank/DDBJ databases.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Hydrolysis of (1->4)-beta-D-xylans, to remove successive D-
CC         xylose residues from the non-reducing termini.; EC=3.2.1.37;
CC   -!- SIMILARITY: Belongs to the glycosyl hydrolase 39 family. {ECO:0000305}.
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DR   EMBL; AF001926; AAB68820.1; -; Genomic_DNA.
DR   AlphaFoldDB; O30360; -.
DR   SMR; O30360; -.
DR   STRING; 1094508.Tsac_1452; -.
DR   CAZy; GH39; Glycoside Hydrolase Family 39.
DR   eggNOG; COG3664; Bacteria.
DR   GO; GO:0009044; F:xylan 1,4-beta-xylosidase activity; IEA:UniProtKB-EC.
DR   GO; GO:0045493; P:xylan catabolic process; IEA:UniProtKB-KW.
DR   InterPro; IPR000514; Glyco_hydro_39.
DR   InterPro; IPR017853; Glycoside_hydrolase_SF.
DR   Pfam; PF01229; Glyco_hydro_39; 1.
DR   PRINTS; PR00745; GLHYDRLASE39.
DR   SUPFAM; SSF51445; SSF51445; 1.
DR   PROSITE; PS01027; GLYCOSYL_HYDROL_F39; 1.
PE   3: Inferred from homology;
KW   Carbohydrate metabolism; Glycosidase; Hydrolase;
KW   Polysaccharide degradation; Xylan degradation.
FT   CHAIN           1..500
FT                   /note="Beta-xylosidase"
FT                   /id="PRO_0000057690"
FT   ACT_SITE        160
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU10068"
FT   ACT_SITE        277
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   500 AA;  58483 MW;  D194E6B76B89E10C CRC64;
     MIKVIVPDFS DKKFSDRWRY CVGTGRLGLA LQKEYIDTLK YVKENIDFKY IRGHGLLCDD
     VGIYREDVVG DEIKPFYNFT YIDRIFDSFL EIGIRPFVEI GFMPKRLASG TQAVFYWEGN
     VTPPKDYKKW ENLIKAVVSH FISRYGIDEV AKWPFEIWNE PNLKEFWKDA DEKEYFKLYK
     ITAKAIKEVN ENIKVGGPAI CGGADYWIED FLNFCYEENV PVDFVSRHAY TSKQGEYTPH
     LIYQEIMPSE YMLNEFKTVR DIIKNSHFPN LPFHITEYNT SYSPQNPVHD TPFNAAYIAR
     ILSEGGDYVD SFSYWTFSDV FEERDVPRSQ FHGGFGLVAL NMVPKPTFYT FKFFNAMGEE
     MLYRDEHMIV TRRDDGSVAL IAWNEVMDKT ENPDKEYEVQ IPVGFKDVFI KRQLIDEEHG
     NPWGTWIHMG RPRYPSKKEI NTLREIAKPE IMTSHAVTND GYLNLKFKLA KNAVVLYELT
     ERIDESSTYI GLDDSKINGY