Reviewed, UniProtKB/Swiss-Prot Q00328 (GUX1_COCCA)

Names and origin

Protein names

Recommended name:
    Exoglucanase 1
    EC=3.2.1.91
Alternative name(s):
    Exoglucanase I
    Exocellobiohydrolase I
    1,4-beta-cellobiohydrolase I
    Beta-glucancellobiohydrolase I

Gene names

Name:

CEL1

Organism

Cochliobolus carbonum (Bipolaris zeicola)

Taxonomic identifier

5017 [NCBI]

Taxonomic lineage

Eukaryota › Fungi › Dikarya › Ascomycota › Pezizomycotina › Dothideomycetes › Pleosporomycetidae › Pleosporales › Pleosporaceae › Cochliobolus

Protein attributes

Sequence length	456 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	The biological conversion of cellulose to glucose generally requires three types of hydrolytic enzymes: (1) Endoglucanases which cut internal beta-1,4-glucosidic bonds; (2) Exocellobiohydrolases that cut the dissaccharide cellobiose from the non-reducing end of the cellulose polymer chain; (3) Beta-1,4-glucosidases which hydrolyze the cellobiose and other short cello-oligosaccharides to glucose.
Catalytic activity	Hydrolysis of 1,4-beta-D-glucosidic linkages in cellulose and cellotetraose, releasing cellobiose from the non-reducing ends of the chains.
Sequence similarities	Belongs to the glycosyl hydrolase 7 (cellulase C) family.

Ontologies

Keywords
Biological process	Carbohydrate metabolism Cellulose degradation Polysaccharide degradation
Domain	Signal
Molecular function	Glycosidase Hydrolase
PTM	Glycoprotein
Gene Ontology (GO)
Biological process	cellulose catabolic process Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	cellulose 1,4-beta-cellobiosidase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Signal peptide	1 – 18	18	Potential
	Chain	19 – 456	438	Exoglucanase 1		PRO_0000007919
Sites
	Active site	232	1	Nucleophile By similarity
	Active site	237	1	Proton donor By similarity
Amino acid modifications
	Glycosylation	44	1	N-linked (GlcNAc...) Potential
	Glycosylation	47	1	N-linked (GlcNAc...) Potential

Sequences

	Sequence		Length	Mass (Da)
	Q00328-1 [UniParc]. Last modified November 1, 1996. Version 1. Checksum: 8014094907DEEA52	FASTA	456	48,304
	10 20 30 40 50 60 MYRTLAFASL SLYGAARAQQ VGTSTAENHP KLTWQTCTGT GGTNCSNKSG SVVLDSNWRW 70 80 90 100 110 120 AHNVGGYTNC YTGNSWSTQY CPDGDSCTKN CAIDGADYSG TYGITTSNNA LSLKFVTKGS 130 140 150 160 170 180 FSSNIGSRTY LMETDTKYQM FNLINKEFTF DVDVSKLPCG LNGALYFVEM AADGGIGKGN 190 200 210 220 230 240 NKAGAKYGTG YCDSQCPHDI KFINGKANVE GWNPSDADPN GGAGKIGACC PEMDIWEANS 250 260 270 280 290 300 ISTAYTPHPC RGVGLQECSD AASCGDGSNR YDGQCDKDGC DFNSYRMGVK DFYGPGATLD 310 320 330 340 350 360 TTKKMTVITQ FLGSGSSLSE IKRFYVQNGK VYKNSQSAVA GVTGNSITES FCTAQKKAFG 370 380 390 400 410 420 DTSSFAALGG LNEMGASLAR GHVLIMSLWG DHAVNMLWLD STYPTDADPS KPGAARGTCP 430 440 450 TTSGKPEDVE KNSPDATVVF SNIKFGPIGS TFAQPA

References

[1]

"Characterization and disruption of a gene in the maize pathogen Cochliobolus carbonum encoding a cellulase lacking a cellulose binding domain and hinge region." Sposato P., Ahn J., Walton J.D. Mol. Plant Microbe Interact. 8:602-609(1995) [PubMed: 8589415] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]. Strain: Race 1.

Cross-references

Sequence databases
EMBLGenBankDDBJ	U25129 Genomic DNA. Translation: AAC49089.1.
3D structure databases
HSSP	HSSP built from PDB template 1GPI based on UniProtKB Q09431.
ModBase	Search...
Protein family/group databases
CAZy	GH7. Glycoside Hydrolase Family 7.
Enzyme and pathway databases
BRENDA	3.2.1.91. 97658.
Family and domain databases
InterPro	IPR001722. Glyco_hydro_7. [Graphical view]
Gene3D	G3DSA:2.70.100.10. Glyco_hydro_7. 1 hit.
Pfam	PF00840. Glyco_hydro_7. 1 hit. [Graphical view]
PRINTS	PR00734. GLHYDRLASE7.
ProDom	PD186135. Glyco_hydro_7. 1 hit. [Graphical view] [Entries sharing at least one domain]
ProtoNet	Search...

Entry information

Entry name

GUX1_COCCA

Accession

Primary (citable) accession number: Q00328

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 15, 1998
Last sequence update:	November 1, 1996
Last modified:	April 14, 2009
This is version 49 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

FPAP (Fungal Proteome Annotation Project)