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P53627

- IABF_STRLI

UniProt

P53627 - IABF_STRLI

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Protein

Intracellular exo-alpha-(1->5)-L-arabinofuranosidase

Gene
abfA
Organism
Streptomyces lividans
Status
Reviewed - Annotation score: 4 out of 5 - Experimental evidence at protein leveli

Functioni

Involved in the degradation of arabinan and is a key enzyme in the complete degradation of the plant cell wall. Catalyzes the cleavage of terminal alpha-(1->5)-arabinofuranosyl bonds in different hemicellulosic homopolysaccharides (arabino-oligoxylosides, branched and debranched arabinans). It acts rapidly on the short-chain arabino-oligoxylosides from digestion of xylan with xylanases. It hydrolyzes slowly arabinan and arabinoxylan from wheat and rye flour.1 Publication

Catalytic activityi

Hydrolysis of terminal non-reducing alpha-L-arabinofuranoside residues in alpha-L-arabinosides.1 Publication

Kineticsi

  1. KM=0.6 mM for p-nitrophenyl alpha-L-arabinofuranoside (pNP-Araf) (at 60 degrees Celsius and at pH 6)1 Publication

Vmax=180 µmol/min/mg enzyme (at 60 degrees Celsius and at pH 6)

pH dependencei

Optimum pH is 6.0.

Temperature dependencei

Optimum temperature is 60 degrees Celsius.

Pathwayi

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Binding sitei27 – 271Substrate By similarity
Binding sitei72 – 721Substrate; via amide nitrogen By similarity
Active sitei175 – 1751Proton donor/acceptor By similarity
Binding sitei246 – 2461Substrate By similarity
Active sitei294 – 2941Nucleophile By similarity
Binding sitei294 – 2941Substrate By similarity
Sitei298 – 2981Important for substrate recognition By similarity
Binding sitei352 – 3521Substrate By similarity
Sitei352 – 3521Important for substrate recognition By similarity

GO - Molecular functioni

  1. alpha-L-arabinofuranosidase activity Source: UniProtKB-EC

GO - Biological processi

  1. arabinan catabolic process Source: UniProtKB-UniPathway
  2. L-arabinose metabolic process Source: InterPro
Complete GO annotation...

Keywords - Molecular functioni

Glycosidase, Hydrolase

Keywords - Biological processi

Carbohydrate metabolism

Enzyme and pathway databases

UniPathwayiUPA00667.

Protein family/group databases

CAZyiGH51. Glycoside Hydrolase Family 51.

Names & Taxonomyi

Protein namesi
Recommended name:
Intracellular exo-alpha-(1->5)-L-arabinofuranosidase (EC:3.2.1.55)
Short name:
ABF
Alternative name(s):
Alpha-L-AF
Arabinoxylan arabinofuranohydrolase
Intracellular arabinan exo-alpha-(1->5)-L-arabinosidase
Short name:
Arabinosidase
Gene namesi
Name:abfA
OrganismiStreptomyces lividans
Taxonomic identifieri1916 [NCBI]
Taxonomic lineageiBacteriaActinobacteriaActinobacteridaeActinomycetalesStreptomycineaeStreptomycetaceaeStreptomyces

Subcellular locationi

Cytoplasm 1 Publication

GO - Cellular componenti

  1. cytoplasm Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 662662Intracellular exo-alpha-(1->5)-L-arabinofuranosidasePRO_0000057704Add
BLAST

Interactioni

Subunit structurei

Homohexamer; trimer of dimers Inferred.1 Publication

Structurei

3D structure databases

ProteinModelPortaliP53627.
SMRiP53627. Positions 3-500.

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni174 – 1752Substrate binding By similarity

Sequence similaritiesi

Family and domain databases

Gene3Di3.20.20.80. 1 hit.
InterProiIPR010720. Alpha-L-AF_C.
IPR013781. Glyco_hydro_catalytic_dom.
IPR017853. Glycoside_hydrolase_SF.
[Graphical view]
PfamiPF06964. Alpha-L-AF_C. 1 hit.
[Graphical view]
SMARTiSM00813. Alpha-L-AF_C. 1 hit.
[Graphical view]
SUPFAMiSSF51445. SSF51445. 1 hit.

Sequencei

Sequence statusi: Complete.

P53627-1 [UniParc]FASTAAdd to Basket

« Hide

MRTARFTLDP AFTVGAVNPR LFGSFVEHLG RCVYTGVFEP GHPTADAEGL    50
RQDVLELVRE LGVTAVRYPG GNFVSGYKWE DSVGPVEDRP RRLDLAWRST 100
ETNRFGLSEY IAFLKKIGPQ AEPMMAVNLG TRGVAEALEL QEYANHPSGT 150
ALSDLRAEHG DKDPFGIRLW CLGNEMDGPW QTGHKTAEEY GRVAAETARA 200
MRQIDPDVEL VACGSSGQSM ETFAEWEATV LKETYDLVDH ISLHAYYEPH 250
DGDVDSFLAS AVDMESFIEN VVATCDHVGA RLKSKKKINL SFDEWNVWYM 300
TKTQAEVSAL DWPEAPRLLE DNYSVMDAVV FGSLLIALLR HADRVTVACL 350
AQLVNVIAPI MTEPGGPAWR QTTFFPFSQA SKYGRGEVLD VRVDSPTYDT 400
AKYGEADLLH ATAVVRARRS VTVFAVNRSR TGALPLEVAL SGLELTEVVE 450
HSALADADPD ARNTLAEPER VVPHPVDGTS LRDGRLTAAL EPLSWNSIRC 500
ADPAPGQPPR RPGEGTGFTG TPPAAPPSSS SAPRPDPTAR RSPDRTARAR 550
VLAAARVRRM PFGRTKVCGA PVRPPTYAPR FQPFRKTWTR WAPAPRSGSP 600
SRRSPTEASI PGGTSSRNVV RYQVTPWRRS PPGSAPGTPA PTRRRRTRAG 650
ASRGAPRTAR RC 662
Length:662
Mass (Da):72,497
Last modified:October 1, 1996 - v1
Checksum:iDAAF66A577C1D6D1
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
U04630 Genomic DNA. Translation: AAA61708.1.
PIRiS55274.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
U04630 Genomic DNA. Translation: AAA61708.1 .
PIRi S55274.

3D structure databases

ProteinModelPortali P53627.
SMRi P53627. Positions 3-500.
ModBasei Search...
MobiDBi Search...

Protein family/group databases

CAZyi GH51. Glycoside Hydrolase Family 51.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Enzyme and pathway databases

UniPathwayi UPA00667 .

Family and domain databases

Gene3Di 3.20.20.80. 1 hit.
InterProi IPR010720. Alpha-L-AF_C.
IPR013781. Glyco_hydro_catalytic_dom.
IPR017853. Glycoside_hydrolase_SF.
[Graphical view ]
Pfami PF06964. Alpha-L-AF_C. 1 hit.
[Graphical view ]
SMARTi SM00813. Alpha-L-AF_C. 1 hit.
[Graphical view ]
SUPFAMi SSF51445. SSF51445. 1 hit.
ProtoNeti Search...

Publicationsi

  1. "Purification and characterization of an alpha-L-arabinofuranosidase from Streptomyces lividans 66 and DNA sequence of the gene (abfA)."
    Manin C., Shareek F., Morosoli R., Kluepfel D.
    Biochem. J. 302:443-449(1994) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA], PROTEIN SEQUENCE OF 1-23, FUNCTION, CATALYTIC ACTIVITY, BIOPHYSICOCHEMICAL PROPERTIES, SUBCELLULAR LOCATION, SUBSTRATE SPECIFICITY, SUBUNIT.
    Strain: 66 / 1326.

Entry informationi

Entry nameiIABF_STRLI
AccessioniPrimary (citable) accession number: P53627
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 1, 1996
Last sequence update: October 1, 1996
Last modified: May 14, 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

Direct protein sequencing

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

External Data

Dasty 3

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