Reviewed, UniProtKB/Swiss-Prot P38676 (GUX1B_NEUCR)

Names and origin

Protein names

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

Gene names

Name:

cbh-1

Organism

Neurospora crassa

Taxonomic identifier

5141 [NCBI]

Taxonomic lineage

Eukaryota › Fungi › Dikarya › Ascomycota › Pezizomycotina › Sordariomycetes › Sordariomycetidae › Sordariales › Sordariaceae › Neurospora

Protein attributes

Sequence length	516 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Inferred from homology.

General annotation (Comments)

Catalytic activity	Hydrolysis of 1,4-beta-D-glucosidic linkages in cellulose and cellotetraose, releasing cellobiose from the non-reducing ends of the chains.
Subcellular location	Secreted.
Miscellaneous	This protein, although sequenced in the genomic strain 74-OR23-1A, has only limited sequence identity to the corresponding protein produced by the locus NCU07340 determined in the complete genome sequence of Neurospora crassa, due to extensive nucleotide sequence discrepancies mostly in the N-terminus.
Sequence similarities	Belongs to the glycosyl hydrolase 7 (cellulase C) family. Contains 1 CBM1 (fungal-type carbohydrate-binding) domain.

Ontologies

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

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Signal peptide	1 – 17	17	Potential
	Chain	18 – 516	499	Exoglucanase 1		PRO_0000007922
Regions
	Domain	480 – 516	37	CBM1
	Region	18 – 445	428	Catalytic
	Region	446 – 480	35	Linker
Sites
	Active site	223	1	Nucleophile By similarity
	Active site	228	1	Proton donor By similarity
Amino acid modifications
	Glycosylation	45	1	N-linked (GlcNAc...) Potential
	Glycosylation	281	1	N-linked (GlcNAc...) Potential
	Disulfide bond	488 ↔ 505		By similarity
	Disulfide bond	499 ↔ 515		By similarity

Sequences

	Sequence		Length	Mass (Da)
	P38676-1 [UniParc]. Last modified February 1, 1995. Version 1. Checksum: 38E598406EA81900	FASTA	516	54,472
	10 20 30 40 50 60 MRASLLAFSL AAAVAGGQQA GTLTAKRHPS LTWQKCTRGG CPTLNTTMVL DANWRWTHAT 70 80 90 100 110 120 SGSTKCYTGN KWQATLCPDG KSCAANCALD GADYTGTYGI TGSGWSLTLQ FVTDNVGARA 130 140 150 160 170 180 YLMADDTQYQ MLELLNQELW FDVDMSNIPC GLNGALYLSA MDADGGMRKY PTNKAGAKYA 190 200 210 220 230 240 TGYCDAQCPR DLKYINGIAN VEGWTPSTND ANGIGDHGSC CSEMDIWEAN KVSTAFTPHP 250 260 270 280 290 300 CTTIEQHMCE GDSCGGTYSD DRYGVLCDAD GCDFNSYRMG NTTFYGEGKT VDTSSKFTVV 310 320 330 340 350 360 TQFIKDSAGD LAEIKAFYVQ NGKVIENSQS NVDGVSGNSI TQSFCKSQKT AFGDIDDFNK 370 380 390 400 410 420 KGGLKQMGKA LAQAMVLVMS IWDDHAANML WLDSTYPVPK VPGAYRGSGP TTSGVPAEVD 430 440 450 460 470 480 ANAPNSKVAF SNIKFGHLGI SPFSGGSSGT PPSNPSSSAS PTSSTAKPSS TSTASNPSGT 490 500 510 GAAHWAQCGG IGFSGPTTCP EPYTCAKDHD IYSQCV

References

[1]	"The cellulase complex of Neurospora crassa: cbh-1 cloning, sequencing and homologies." Taleb F., Radford A. Gene 161:137-138(1995) [PubMed: 7642129] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]. Strain: ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987.

Cross-references

Sequence databases
EMBL GenBank DDBJ	X77778 Genomic DNA. Translation: CAA54815.1.
PIR	S42093.
3D structure databases
SMR	P38676. Positions 18-436, 482-516.
ModBase	Search...
Protein family/group databases
CAZy	CBM1. Carbohydrate-Binding Module Family 1. GH7. Glycoside Hydrolase Family 7.
Phylogenomic databases
eggNOG	fuNOG05922.
Enzyme and pathway databases
BRENDA	3.2.1.91. 266.
Family and domain databases
InterPro	IPR000254. Cellulose-bd_dom_fun. IPR008985. ConA-like_lec_gl. IPR001722. Glyco_hydro_7. [Graphical view]
Gene3D	G3DSA:2.70.100.10. Glyco_hydro_7. 1 hit.
Pfam	PF00734. CBM_1. 1 hit. PF00840. Glyco_hydro_7. 1 hit. [Graphical view]
PRINTS	PR00734. GLHYDRLASE7.
ProDom	PD001821. CBD_fun. 1 hit. [Graphical view] [Entries sharing at least one domain]
SMART	SM00236. fCBD. 1 hit. [Graphical view]
PROSITE	PS00562. CBM1_1. 1 hit. PS51164. CBM1_2. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

GUX1B_NEUCR

Accession

Primary (citable) accession number: P38676

Entry history

Integrated into UniProtKB/Swiss-Prot:	February 1, 1995
Last sequence update:	February 1, 1995
Last modified:	January 19, 2010
This is version 66 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

FPAP (Fungal Proteome Annotation Project)