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Protein

Xylosidase/arabinosidase

Gene

xylB

Organism
Butyrivibrio fibrisolvens
Status
Reviewed-Annotation score: Annotation score: 2 out of 5-Protein inferred from homologyi

Functioni

Has a 1.6-fold higher activity as an arabinosidase than as a beta-xylosidase when tested on the substrates nitrophenyl-beta-D-xylopyranoside and P-nitrophenyl-alpha-L-arabinofuranoside.

Catalytic activityi

Hydrolysis of (1->4)-beta-D-xylans, to remove successive D-xylose residues from the non-reducing termini.
Hydrolysis of terminal non-reducing alpha-L-arabinofuranoside residues in alpha-L-arabinosides.

GO - Molecular functioni

  1. alpha-L-arabinofuranosidase activity Source: UniProtKB-EC
  2. xylan 1,4-beta-xylosidase activity Source: UniProtKB-EC

GO - Biological processi

  1. xylan catabolic process Source: UniProtKB-KW
Complete GO annotation...

Keywords - Molecular functioni

Glycosidase, Hydrolase

Keywords - Biological processi

Carbohydrate metabolism, Polysaccharide degradation, Xylan degradation

Protein family/group databases

CAZyiGH43. Glycoside Hydrolase Family 43.

Names & Taxonomyi

Protein namesi
Recommended name:
Xylosidase/arabinosidase
Including the following 2 domains:
Beta-xylosidase (EC:3.2.1.37)
Alternative name(s):
1,4-beta-D-xylan xylohydrolase
Xylan 1,4-beta-xylosidase
Alpha-L-arabinofuranosidase (EC:3.2.1.55)
Short name:
Arabinosidase
Gene namesi
Name:xylB
OrganismiButyrivibrio fibrisolvens
Taxonomic identifieri831 [NCBI]
Taxonomic lineageiBacteriaFirmicutesClostridiaClostridialesLachnospiraceaeButyrivibrio

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 517517Xylosidase/arabinosidasePRO_0000057694Add
BLAST

Structurei

3D structure databases

ProteinModelPortaliP45982.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the glycosyl hydrolase 43 family.Curated

Family and domain databases

Gene3Di2.115.10.20. 1 hit.
2.60.120.200. 1 hit.
InterProiIPR013320. ConA-like_dom.
IPR006710. Glyco_hydro_43.
IPR023296. Glyco_hydro_beta-prop.
[Graphical view]
PANTHERiPTHR22925. PTHR22925. 1 hit.
PfamiPF04616. Glyco_hydro_43. 1 hit.
[Graphical view]
SUPFAMiSSF49899. SSF49899. 1 hit.
SSF75005. SSF75005. 1 hit.

Sequencei

Sequence statusi: Complete.

P45982-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MVIANNPILK GFYPDPSICR KGDDFYLVCS SFVYAPGVPI FHTKDLAHFE
60 70 80 90 100
QIGNILDRES QLPLSGDISR GIFAPTIREH NGIFYMITTN VSSGGNFIVT
110 120 130 140 150
AKDPAGPWSE PYYLGEDEAP GIDPSLFFDD DGKCYYVGTR PNPDGVRYNG
160 170 180 190 200
DWEIWVQELD LEQMKLVGPS MAIWKGALKD VIWPEGPHLY KKDGYYYLLH
210 220 230 240 250
AEAGTSFEHA ISVARSKELF KWFEGCPRNP IFTHRNLGKD YPVCNVGHAD
260 270 280 290 300
LVDDINGNWY MVMLASRPCK GKCSLGRETF LAKVIWEDGW PVVNPGVGRL
310 320 330 340 350
TDEVEMDLPE YRFSKEITTK DKMTFEETVL DDRFVGIERR SEDFYSLTDN
360 370 380 390 400
PGFLRLKLRP EAIENTGNPS YLGIRQKTHS FRASCGLKFT PAKDNECAGM
410 420 430 440 450
VLFQNNENHL ELLVVKKKDK LQFKVGPVIK GTKIRLATFD ISSGDLEIIL
460 470 480 490 500
EAANQLANIY IKKNNEKILV AECIDLSPYT TEESGGFVGC TIGLYASSNG
510
KTSDNYCDYS YFTVEEV
Length:517
Mass (Da):58,222
Last modified:November 1, 1995 - v1
Checksum:iF1B645F76F6FE0B5
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M55537 Genomic DNA. Translation: AAA63610.1.
PIRiA49776.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M55537 Genomic DNA. Translation: AAA63610.1.
PIRiA49776.

3D structure databases

ProteinModelPortaliP45982.
ModBaseiSearch...
MobiDBiSearch...

Protein family/group databases

CAZyiGH43. Glycoside Hydrolase Family 43.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Family and domain databases

Gene3Di2.115.10.20. 1 hit.
2.60.120.200. 1 hit.
InterProiIPR013320. ConA-like_dom.
IPR006710. Glyco_hydro_43.
IPR023296. Glyco_hydro_beta-prop.
[Graphical view]
PANTHERiPTHR22925. PTHR22925. 1 hit.
PfamiPF04616. Glyco_hydro_43. 1 hit.
[Graphical view]
SUPFAMiSSF49899. SSF49899. 1 hit.
SSF75005. SSF75005. 1 hit.
ProtoNetiSearch...

Publicationsi

  1. "Sequencing and expression of the Butyrivibrio fibrisolvens xylB gene encoding a novel bifunctional protein with beta-D-xylosidase and alpha-L-arabinofuranosidase activities."
    Utt E.A., Eddy C.K., Keshav K.F., Ingram L.O.
    Appl. Environ. Microbiol. 57:1227-1234(1991) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].

Entry informationi

Entry nameiXYLB_BUTFI
AccessioniPrimary (citable) accession number: P45982
Entry historyi
Integrated into UniProtKB/Swiss-Prot: November 1, 1995
Last sequence update: November 1, 1995
Last modified: October 29, 2014
This is version 59 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Multifunctional enzyme

Documents

  1. Glycosyl hydrolases
    Classification of glycosyl hydrolase families and list of entries
  2. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.