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Protein

Rhamnogalacturonase B

Gene

rhgB

Organism
Aspergillus niger
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

Pectinolytic enzymes consist of four classes of enzymes: pectine lyase, polygalacturonase, pectin methylesterase and rhamnogalacturonase. Hydrolyzes alpha-D-galacturonopyranosyl-(1,2)-alpha-L-rhamnopyranosyl linkages in the backbone of the hairy regions of pectins.1 Publication

Catalytic activityi

Endohydrolysis of alpha-D-GalA-(1->2)-alpha-L-Rha glycosidic bond in the rhamnogalacturonan I backbone with initial inversion of anomeric configuration releasing oligosaccharides with beta-D-GalA at the reducing end.

pH dependencei

Optimum pH is 4.1.1 Publication

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Active sitei219Proton donorBy similarity1
Active sitei294By similarity1

GO - Molecular functioni

GO - Biological processi

  • cell wall organization Source: UniProtKB-KW
  • pectin catabolic process Source: UniProtKB

Keywordsi

Molecular functionGlycosidase, Hydrolase
Biological processCarbohydrate metabolism, Cell wall biogenesis/degradation, Polysaccharide degradation

Protein family/group databases

CAZyiGH28 Glycoside Hydrolase Family 28
mycoCLAPiRHG28B_ASPNG

Names & Taxonomyi

Protein namesi
Recommended name:
Rhamnogalacturonase B (EC:3.2.1.171)
Short name:
RGase B
Short name:
RHG B
Gene namesi
Name:rhgB
OrganismiAspergillus niger
Taxonomic identifieri5061 [NCBI]
Taxonomic lineageiEukaryotaFungiDikaryaAscomycotaPezizomycotinaEurotiomycetesEurotiomycetidaeEurotialesAspergillaceaeAspergillus

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 – 21Sequence analysisAdd BLAST21
ChainiPRO_000039438822 – 558Rhamnogalacturonase BAdd BLAST537

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi42 ↔ 68By similarity
Glycosylationi145N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi221 ↔ 238By similarity
Glycosylationi239N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi254N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi321N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi344 ↔ 350By similarity
Disulfide bondi372 ↔ 381By similarity

Keywords - PTMi

Disulfide bond, Glycoprotein

Proteomic databases

PRIDEiP87161

Structurei

3D structure databases

ProteinModelPortaliP87161
SMRiP87161
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Compositional biasi442 – 522Ala-richAdd BLAST81

Sequence similaritiesi

Belongs to the glycosyl hydrolase 28 family.Curated

Keywords - Domaini

Signal

Phylogenomic databases

eggNOGiENOG410IHX4 Eukaryota
ENOG4110FN4 LUCA

Family and domain databases

Gene3Di2.160.20.10, 1 hit
InterProiView protein in InterPro
IPR000743 Glyco_hydro_28
IPR012334 Pectin_lyas_fold
IPR011050 Pectin_lyase_fold/virulence
PfamiView protein in Pfam
PF00295 Glyco_hydro_28, 1 hit
SUPFAMiSSF51126 SSF51126, 1 hit

Sequencei

Sequence statusi: Complete.

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

P87161-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MLLDKLSVLS FLGLAPIFAA AQLSGSVGPL TSASTKAATK TCNVLDYGAK
60 70 80 90 100
ADKSTDLGAP LASAFADCKS GGLVYVPSGD YALSTWARLS GGEAWALQID
110 120 130 140 150
GIIYRTGTDG GNMIYIEHSS DFELFSSTSE GAMQGLGYEF HADDNWSGPR
160 170 180 190 200
LLRLYEVTDF SVHDFILVDS PSFHFSLDTC TNGEIYNMAI RGGNHGGLDG
210 220 230 240 250
IDVWSNNIWV HDVEVTNKDE CVTVKGPSKN ILIESIYCNW SGGCGMGSFG
260 270 280 290 300
SDTNVSDITY RNIYTWSSNN MMLIKSNGGS GFVENVLLEN FIGHGNAYSL
310 320 330 340 350
DIDSYWASMS AVDGDGVQLS NITVKNWKGT EAYGAERGPV KVVCADGAPC
360 370 380 390 400
YDITIEDFAM WTEEGDSQWY SCESAYGSGY CLQDSDDHVS YSVTTSTVSS
410 420 430 440 450
APSGYSATSM AADLTTDFGS TVSIPIPTIP TSFYPGATPY SALMANSAST
460 470 480 490 500
AAASSIASHA TVHSSSASVA ASVPSAVAPS ESIPAATSAV VSSAAAIAPS
510 520 530 540 550
PAVGAQEGST TSAPSFAAPS GAGNSPQGPT GASGFGEKGQ QGEQGEQGEQ

GEQGVCYV
Length:558
Mass (Da):57,903
Last modified:July 1, 1997 - v1
Checksum:i34665B5E66ED0655
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X94221 Genomic DNA Translation: CAA63912.1

Similar proteinsi

Entry informationi

Entry nameiRHGB_ASPNG
AccessioniPrimary (citable) accession number: P87161
Entry historyiIntegrated into UniProtKB/Swiss-Prot: May 18, 2010
Last sequence update: July 1, 1997
Last modified: May 23, 2018
This is version 78 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programFungal Protein Annotation Program
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health