ID   ABNB_ASPOR              Reviewed;         353 AA.
AC   Q2UI74;
DT   15-JUN-2010, integrated into UniProtKB/Swiss-Prot.
DT   24-JAN-2006, sequence version 1.
DT   25-MAY-2022, entry version 71.
DE   RecName: Full=Probable arabinan endo-1,5-alpha-L-arabinosidase B;
DE            EC=3.2.1.99;
DE   AltName: Full=Endo-1,5-alpha-L-arabinanase B;
DE            Short=ABN B;
DE   Flags: Precursor;
GN   Name=abnB; ORFNames=AO090023000165;
OS   Aspergillus oryzae (strain ATCC 42149 / RIB 40) (Yellow koji mold).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Eurotiomycetes;
OC   Eurotiomycetidae; Eurotiales; Aspergillaceae; Aspergillus;
OC   Aspergillus subgen. Circumdati.
OX   NCBI_TaxID=510516;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 42149 / RIB 40;
RX   PubMed=16372010; DOI=10.1038/nature04300;
RA   Machida M., Asai K., Sano M., Tanaka T., Kumagai T., Terai G., Kusumoto K.,
RA   Arima T., Akita O., Kashiwagi Y., Abe K., Gomi K., Horiuchi H.,
RA   Kitamoto K., Kobayashi T., Takeuchi M., Denning D.W., Galagan J.E.,
RA   Nierman W.C., Yu J., Archer D.B., Bennett J.W., Bhatnagar D.,
RA   Cleveland T.E., Fedorova N.D., Gotoh O., Horikawa H., Hosoyama A.,
RA   Ichinomiya M., Igarashi R., Iwashita K., Juvvadi P.R., Kato M., Kato Y.,
RA   Kin T., Kokubun A., Maeda H., Maeyama N., Maruyama J., Nagasaki H.,
RA   Nakajima T., Oda K., Okada K., Paulsen I., Sakamoto K., Sawano T.,
RA   Takahashi M., Takase K., Terabayashi Y., Wortman J.R., Yamada O.,
RA   Yamagata Y., Anazawa H., Hata Y., Koide Y., Komori T., Koyama Y.,
RA   Minetoki T., Suharnan S., Tanaka A., Isono K., Kuhara S., Ogasawara N.,
RA   Kikuchi H.;
RT   "Genome sequencing and analysis of Aspergillus oryzae.";
RL   Nature 438:1157-1161(2005).
CC   -!- FUNCTION: Endo-1,5-alpha-L-arabinanase involved in degradation of
CC       pectin. Its preferred substrate is linear 1,5-alpha-L-arabinan (By
CC       similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Endohydrolysis of (1->5)-alpha-arabinofuranosidic linkages in
CC         (1->5)-arabinans.; EC=3.2.1.99;
CC   -!- PATHWAY: Glycan metabolism; L-arabinan degradation.
CC   -!- SUBCELLULAR LOCATION: Secreted {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the glycosyl hydrolase 43 family. {ECO:0000305}.
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DR   EMBL; AP007157; BAE58741.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q2UI74; -.
DR   SMR; Q2UI74; -.
DR   CAZy; GH43; Glycoside Hydrolase Family 43.
DR   EnsemblFungi; BAE58741; BAE58741; AO090023000165.
DR   HOGENOM; CLU_009397_5_0_1; -.
DR   UniPathway; UPA00667; -.
DR   Proteomes; UP000006564; Chromosome 3.
DR   GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR   GO; GO:0046558; F:arabinan endo-1,5-alpha-L-arabinosidase activity; IEA:UniProtKB-EC.
DR   GO; GO:0031222; P:arabinan catabolic process; IEA:UniProtKB-UniPathway.
DR   GO; GO:0045493; P:xylan catabolic process; IEA:UniProtKB-KW.
DR   Gene3D; 2.115.10.20; -; 1.
DR   InterPro; IPR006710; Glyco_hydro_43.
DR   InterPro; IPR016840; Glyco_hydro_43_endo_a_Ara-ase.
DR   InterPro; IPR023296; Glyco_hydro_beta-prop_sf.
DR   Pfam; PF04616; Glyco_hydro_43; 1.
DR   PIRSF; PIRSF026534; Endo_alpha-L-arabinosidase; 1.
DR   SUPFAM; SSF75005; SSF75005; 1.
PE   3: Inferred from homology;
KW   Carbohydrate metabolism; Glycoprotein; Glycosidase; Hydrolase;
KW   Polysaccharide degradation; Reference proteome; Secreted; Signal;
KW   Xylan degradation.
FT   SIGNAL          1..16
FT                   /evidence="ECO:0000255"
FT   CHAIN           17..353
FT                   /note="Probable arabinan endo-1,5-alpha-L-arabinosidase B"
FT                   /id="PRO_0000394628"
FT   REGION          202..227
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   ACT_SITE        39
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000250|UniProtKB:P94522"
FT   ACT_SITE        233
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000250|UniProtKB:P94522"
FT   SITE            159
FT                   /note="Important for catalytic activity, responsible for
FT                   pKa modulation of the active site Glu and correct
FT                   orientation of both the proton donor and substrate"
FT                   /evidence="ECO:0000250|UniProtKB:P94522"
FT   CARBOHYD        194
FT                   /note="N-linked (GlcNAc...) asparagine"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   353 AA;  38400 MW;  0548F55FE75B3082 CRC64;
     MVLVATLFSL FTVSLCRSIP RSSPSSSPYT QATDLKIHDP TVINANGAYY AYGVGEHIVI
     HQAPGLAGPW KQIGSVLDKD SIIPKGDRAK PWAPTTIEVK GTFYCYYSVS NAGCRDSAIG
     VATSQSPGPG GWTDHGAIVQ SGTGQGSDEH PFNEVNAIDP AVLVTGDKGH LVFGSYWSGI
     WQVPLNEDFS SVGNTTGLNA HHLAKHPKTE RVNSQDQNPD PLCRDSSGRR PVEGAYISYH
     APYYYLWLSW GQCCDYDPNN LPPSGEEYSI RVGRSESPHG PFVDKQGKEL TQGGGELIYG
     SNNDVYAPGG QGVITVETGD ILYYHYSLYR YSTHSLYTFA NLDFNQGCTL FIQ