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Protein

Endo-1,4-beta-xylanase B

Gene

xynB

Organism
Talaromyces purpureogenus (Soft rot fungus) (Penicillium purpureogenum)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

Endo-1,4-beta-xylanase involved in the hydrolysis of xylan, a major structural heterogeneous polysaccharide found in plant biomass representing the second most abundant polysaccharide in the biosphere, after cellulose.1 Publication

Catalytic activityi

Endohydrolysis of (1->4)-beta-D-xylosidic linkages in xylans.2 Publications

Enzyme regulationi

N-bromosuccinimide completely inhibits the catalytic activity.1 Publication

pH dependencei

Optimum pH is 3.5.1 Publication

Temperature dependencei

Optimum temperature is 50 degrees Celsius.1 Publication

Pathwayi: xylan degradation

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

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Active sitei101NucleophileBy similarity1
Active sitei194Proton donorPROSITE-ProRule annotation1

GO - Molecular functioni

GO - Biological processi

Keywordsi

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

Enzyme and pathway databases

UniPathwayiUPA00114

Protein family/group databases

CAZyiGH11 Glycoside Hydrolase Family 11
mycoCLAPiXYN11B_PENPU

Names & Taxonomyi

Protein namesi
Recommended name:
Endo-1,4-beta-xylanase B (EC:3.2.1.8)
Short name:
Xylanase B
Alternative name(s):
1,4-beta-D-xylan xylanohydrolase B
Gene namesi
Name:xynB
OrganismiTalaromyces purpureogenus (Soft rot fungus) (Penicillium purpureogenum)
Taxonomic identifieri1266744 [NCBI]
Taxonomic lineageiEukaryotaFungiDikaryaAscomycotaPezizomycotinaEurotiomycetesEurotiomycetidaeEurotialesTrichocomaceaeTalaromyces

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cell wall Cytoskeleton Vacuole Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Keywords - Cellular componenti

Secreted

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 16Sequence analysisAdd BLAST16
ChainiPRO_000042966217 – 208Endo-1,4-beta-xylanase BAdd BLAST192

Structurei

3D structure databases

ProteinModelPortaliQ96W72
SMRiQ96W72
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini17 – 207GH11PROSITE-ProRule annotationAdd BLAST191

Sequence similaritiesi

Keywords - Domaini

Signal

Family and domain databases

Gene3Di2.60.120.180, 1 hit
InterProiView protein in InterPro
IPR013320 ConA-like_dom_sf
IPR013319 GH11/12
IPR033119 GH11_AS_2
IPR033123 GH11_dom
IPR001137 Glyco_hydro_11
PfamiView protein in Pfam
PF00457 Glyco_hydro_11, 1 hit
PRINTSiPR00911 GLHYDRLASE11
SUPFAMiSSF49899 SSF49899, 1 hit
PROSITEiView protein in PROSITE
PS00777 GH11_2, 1 hit
PS51761 GH11_3, 1 hit

Sequencei

Sequence statusi: Complete.

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

Q96W72-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKVTAAFAGL LATTLAAPAT ELVTRSINYV QNYNGNLGAF SYNEGAGTFS
60 70 80 90 100
MYWQQGVSND FVVGLGRSTG SSNPITYSAS YSASGGSYLA VYGWVNSPQA
110 120 130 140 150
EYHVVEAYGN YNPCSSGSAT NLGTVSSDGG TYQVCTDTRV NQPSITGTST
160 170 180 190 200
FTQFFSVRQG SRTSGTVTIA NHFNFWAKHG FGNSNFNYQV VAVEAWSGTG

TASVTVSA
Length:208
Mass (Da):21,869
Last modified:December 1, 2001 - v1
Checksum:i6DC554A2CA97C6D3
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti13 – 19TTLAAPA → RHSPPLS in CAA90390 (PubMed:9099888).Curated7
Sequence conflicti103H → Y in CAA90390 (PubMed:9099888).Curated1
Sequence conflicti178 – 179KH → ND in CAA90390 (PubMed:9099888).Curated2

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Z50050 mRNA Translation: CAA90390.1
AF359553 Genomic DNA Translation: AAK50762.1

Similar proteinsi

Entry informationi

Entry nameiXYNB_TALPU
AccessioniPrimary (citable) accession number: Q96W72
Secondary accession number(s): Q12666
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 9, 2014
Last sequence update: December 1, 2001
Last modified: November 22, 2017
This is version 77 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programFungal Protein Annotation Program

Miscellaneousi

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

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