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A6ZVM6 (NCB5R_YEAS7) Reviewed, UniProtKB/Swiss-Prot

Last modified September 21, 2011. Version 32. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (1) | Third-party data text xml rdf/xml gff fasta
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Names and origin

Protein namesRecommended name:
NADH-cytochrome b5 reductase 1

EC=1.6.2.2
Alternative name(s):
Microsomal cytochrome b reductase
P35
Gene names
Name:CBR1
ORF Names:SCY_2742
OrganismSaccharomyces cerevisiae (strain YJM789) (Baker's yeast) [Complete proteome]
Taxonomic identifier307796 [NCBI]
Taxonomic lineageEukaryotaFungiDikaryaAscomycotaSaccharomycotinaSaccharomycetesSaccharomycetalesSaccharomycetaceaeSaccharomyces

Protein attributes

Sequence length284 AA.
Sequence statusComplete.
Protein existenceEvidence at transcript level

General annotation (Comments)

Function

Electron donor reductase for cytochrome b5. The cytochrome b5/NADH cytochrome b5 reductase electron transfer system supports the catalytic activity of several sterol biosynthetic enzymes. Plays a role in bud morphology By similarity.

Catalytic activity

NADH + 2 ferricytochrome b5 = NAD+ + H+ + 2 ferrocytochrome b5.

Cofactor

FAD By similarity.

Enzyme regulation

Competitively inhibited by NAD+. Inhibited by mercurials such as p-chloromercuribenzoate (PCMB) and HgCl2. Enzymatic activity increases under anaerobic conditions By similarity.

Subunit structure

Monomer By similarity. Interacts with STE20 By similarity.

Subcellular location

Endoplasmic reticulum membrane; Single-pass membrane protein By similarity. Mitochondrion outer membrane; Single-pass membrane protein By similarity.

Induction

Protein levels are highest during exponential growth phase and lowest in stationary phase By similarity.

Sequence similarities

Belongs to the flavoprotein pyridine nucleotide cytochrome reductase family.

Contains 1 FAD-binding FR-type domain.

Sequence caution

The sequence EDN61451.1 differs from that shown. Reason: Erroneous initiation.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 284284NADH-cytochrome b5 reductase 1
PRO_0000330167

Regions

Transmembrane7 – 2721Helical; Potential
Domain38 – 142105FAD-binding FR-type
Nucleotide binding148 – 18033FAD By similarity

Sequences

Sequence LengthMass (Da)Tools
A6ZVM6 [UniParc].

Last modified April 29, 2008. Version 2.
Checksum: CF24B16DD34A7A12

FASTA28431,422
        10         20         30         40         50         60 
MAIDAQKLVV VIVIVVVPLL FKFIIGPKTK PVLDPKRNDF QSFPLVEKTI LTHNTSMYKF 

        70         80         90        100        110        120 
GLPHADDVLG LPIGQHIVIK ANINGKDITR SYTPTSLDGD TKGNFELLVK SYPTGNVSKM 

       130        140        150        160        170        180 
IGELKIGDSI QIKGPRGNYH YERNCRSHLG MIAGGTGIAP MYQIMKAIAM DSHDTTKVSL 

       190        200        210        220        230        240 
VFGNVHEEDI LLKKELEALV AMKPSQFKIV YYLDSPDRED WAGGVGYITK DVIKEHLPAA 

       250        260        270        280 
TVDNVQILIC GPPAMVASVR RSTVDLGFRR SKPLSKMEDQ VFVF 

« Hide

References

[1]"Genome sequencing and comparative analysis of Saccharomyces cerevisiae strain YJM789."
Wei W., McCusker J.H., Hyman R.W., Jones T., Ning Y., Cao Z., Gu Z., Bruno D., Miranda M., Nguyen M., Wilhelmy J., Komp C., Tamse R., Wang X., Jia P., Luedi P., Oefner P.J., David L. expand/collapse author list , Dietrich F.S., Li Y., Davis R.W., Steinmetz L.M.
Proc. Natl. Acad. Sci. U.S.A. 104:12825-12830(2007) [PubMed: 17652520] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: YJM789.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
AAFW02000124 Genomic DNA. Translation: EDN61451.1. Different initiation.

3D structure databases

ProteinModelPortalA6ZVM6.
ModBaseSearch...

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Family and domain databases

InterProIPR017927. Fd_Rdtase_FAD-bd.
IPR001709. Flavoprot_Pyr_Nucl_cyt_Rdtase.
IPR001834. NADH-Cyt_B5_reductase.
IPR008333. OxRdtase_FAD-bd_dom.
IPR001433. OxRdtase_FAD/NAD-bd.
IPR017938. Riboflavin_synthase-like_b-brl.
[Graphical view]
PfamPF00970. FAD_binding_6. 1 hit.
PF00175. NAD_binding_1. 1 hit.
[Graphical view]
PRINTSPR00406. CYTB5RDTASE.
PR00371. FPNCR.
SUPFAMSSF63380. Riboflavin_synthase_like_b-brl. 1 hit.
PROSITEPS51384. FAD_FR. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameNCB5R_YEAS7
AccessionPrimary (citable) accession number: A6ZVM6
Entry history
Integrated into UniProtKB/Swiss-Prot: April 29, 2008
Last sequence update: April 29, 2008
Last modified: September 21, 2011
This is version 32 of the entry and version 2 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programFungal Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families