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Protein

Probable alpha-L-arabinofuranosidase B

Gene

abfB

Organism
Aspergillus niger (strain CBS 513.88 / FGSC A1513)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Protein inferred from homologyi

Functioni

Alpha-L-arabinofuranosidase involved in the degradation of arabinoxylan, a major component of plant hemicellulose. Able to hydrolyze 1,5-, 1,3- and 1,2-alpha-linkages not only in L-arabinofuranosyl oligosaccharides, but also in polysaccharides containing terminal non-reducing L-arabinofuranoses in side chains, like L-arabinan, arabinogalactan and arabinoxylan (By similarity).By similarity

Catalytic activityi

Hydrolysis of terminal non-reducing alpha-L-arabinofuranoside residues in alpha-L-arabinosides.

Pathwayi: L-arabinan degradation

This protein is involved in the pathway L-arabinan degradation, which is part of Glycan metabolism.
View all proteins of this organism that are known to be involved in the pathway L-arabinan degradation and in Glycan metabolism.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sitei176 – 177Cis-peptide bondBy similarity2
Binding sitei219SubstrateBy similarity1
Active sitei221NucleophileBy similarity1
Binding sitei222Substrate; via amide nitrogenBy similarity1
Binding sitei223Substrate; via amide nitrogenBy similarity1
Binding sitei296Substrate; via amide nitrogenBy similarity1
Active sitei297Proton donorBy similarity1
Binding sitei416SubstrateBy similarity1
Binding sitei418Substrate; via amide nitrogenBy similarity1
Binding sitei419Substrate; via amide nitrogenBy similarity1
Binding sitei435SubstrateBy similarity1
Binding sitei463SubstrateBy similarity1
Binding sitei465Substrate; via amide nitrogenBy similarity1
Binding sitei468Substrate; via amide nitrogenBy similarity1
Binding sitei488SubstrateBy similarity1

GO - Molecular functioni

  • alpha-L-arabinofuranosidase activity Source: AspGD

GO - Biological processi

Keywordsi

Molecular functionGlycosidase, Hydrolase
Biological processCarbohydrate metabolism, Polysaccharide degradation, Xylan degradation

Enzyme and pathway databases

UniPathwayiUPA00667.

Protein family/group databases

CAZyiCBM42. Carbohydrate-Binding Module Family 42.
GH54. Glycoside Hydrolase Family 54.

Names & Taxonomyi

Protein namesi
Recommended name:
Probable alpha-L-arabinofuranosidase B (EC:3.2.1.55)
Short name:
ABF B
Short name:
Arabinosidase B
Gene namesi
Name:abfB
ORF Names:An15g02300
OrganismiAspergillus niger (strain CBS 513.88 / FGSC A1513)
Taxonomic identifieri425011 [NCBI]
Taxonomic lineageiEukaryotaFungiDikaryaAscomycotaPezizomycotinaEurotiomycetesEurotiomycetidaeEurotialesAspergillaceaeAspergillus
Proteomesi
  • UP000006706 Componenti: Chromosome 3R

Subcellular locationi

GO - Cellular componenti

  • extracellular region Source: UniProtKB
  • intracellular Source: AspGD

Keywords - Cellular componenti

Secreted

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 18Sequence analysisAdd BLAST18
ChainiPRO_500022102419 – 499Probable alpha-L-arabinofuranosidase BAdd BLAST481

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi21 ↔ 31By similarity
Disulfide bondi81 ↔ 86By similarity
Glycosylationi83N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi176 ↔ 177By similarity
Glycosylationi202N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi401 ↔ 439By similarity

Keywords - PTMi

Disulfide bond, Glycoprotein

Interactioni

Protein-protein interaction databases

STRINGi5061.CADANGAP00011686.

Structurei

3D structure databases

ProteinModelPortaliA2R511.
SMRiA2R511.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni19 – 335CatalyticBy similarityAdd BLAST317
Regioni336 – 499ABDBy similarityAdd BLAST164

Domaini

Organized into two domains: an N-terminal catalytic domain and a C-terminal arabinose-binding domain (ABD).By similarity

Sequence similaritiesi

Belongs to the glycosyl hydrolase 54 family.Curated

Keywords - Domaini

Signal

Phylogenomic databases

HOGENOMiHOG000187007.
KOiK20844.
OrthoDBiEOG092C3Z3T.

Family and domain databases

InterProiView protein in InterPro
IPR015289. A-L-arabinofuranosidase_B_cat.
IPR007934. AbfB_ABD.
IPR013320. ConA-like_dom.
PfamiView protein in Pfam
PF05270. AbfB. 1 hit.
PF09206. ArabFuran-catal. 1 hit.
SUPFAMiSSF110221. SSF110221. 1 hit.
SSF49899. SSF49899. 1 hit.

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

A2R511-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MFSRRNLVAL GLAATVSAGP CDIYEAGDTP CVAAHSTTRA LYSSFSGALY
60 70 80 90 100
QLQRGSDDTT TTISPLTAGG VADASAQDTF CANTTCLITI IYDQSGNGNH
110 120 130 140 150
LTQAPPGGFD GPDVDGYDNL ASAIGAPVTL NGQKAYGVFM SPGTGYRNNE
160 170 180 190 200
ATGTATGDEP EGMYAVLDGT HYNDACCFDY GNAETSSTDT GAGHMEAIYL
210 220 230 240 250
GNSTTWGYGA GDGPWIMVDM ENNLFSGADE GYNSGDPSIS YSFVTAAVKG
260 270 280 290 300
GADKWAIRGG NAASGSLSTY YSGARPDYSG YNPMSKEGAI ILGIGGDNSN
310 320 330 340 350
GAQGTFYEGV MTSGYPSDDV ENSVQENIVA AKYVSGSLVS GPSFTSGEVV
360 370 380 390 400
SLRVTTPGYT TRYIAHTDTT VNTQVVDDDS STTLKEEASW TVVTGLANSQ
410 420 430 440 450
CFSFESVDTP GSYIRHYNFE LLLNANDGTK QFHEDATFCP QAPLNGEGTS
460 470 480 490
LRSWSYPTRY FRHYDNVLYA ASNGGVQTFD SKTSFNNDVS FEIETAFAS
Length:499
Mass (Da):52,509
Last modified:March 6, 2007 - v1
Checksum:iF1F6C21F601419C9
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AM270337 Genomic DNA. Translation: CAK42333.1.
RefSeqiXP_001396769.1. XM_001396732.2.

Genome annotation databases

EnsemblFungiiCAK42333; CAK42333; An15g02300.
GeneIDi4987831.
KEGGiang:ANI_1_372134.

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 one 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.

Entry informationi

Entry nameiABFB_ASPNC
AccessioniPrimary (citable) accession number: A2R511
Entry historyiIntegrated into UniProtKB/Swiss-Prot: June 15, 2010
Last sequence update: March 6, 2007
Last modified: July 5, 2017
This is version 69 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programFungal Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Glycosyl hydrolases
    Classification of glycosyl hydrolase families and list of entries
  2. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  3. SIMILARITY comments
    Index of protein domains and families