Toggle navigation
About
What is Reactome ?
News
Team
Scientific Advisory Board
Funding
Editorial Calendar
Release Calendar
Statistics
Our Logo
License Agreement
Privacy Notice
Disclaimer
Digital Preservation
Contact us
Content
Table of Contents
DOIs
Data Schema
Reactome Research Spotlight
ORCID Integration Project
COVID-19 Disease Pathways
Docs
Userguide
Pathway Browser
How do I search ?
Details Panel
Analysis Tools
Analysis Data
Analysis Gene Expression
Species Comparison
Tissue Distribution
Diseases
Cytomics
Review Status of Reactome Events
ReactomeFIViz
Developer's Zone
Graph Database
Analysis Service
Content Service
Pathways Overview
Pathway Diagrams
Icon Info
EHLD Specs & Guidelines
Icon Library Guidelines
Data Model
Curator Guide
Release Documentation
Computationally inferred events
FAQ
Linking to Us
Citing us
Tools
Pathway Browser
Analyse gene list
Analyse gene expression
Species Comparison
Tissue Distribution
Analysis Service
Content Service
ReactomeFIViz
Advanced Data Search
Site Search
Community
Contribute Pathway Knowledge
Icon Library
Outreach
Events
Publications
Partners
Contributors
Resources Guide
Download
About
What is Reactome ?
News
Team
Scientific Advisory Board
Funding
Editorial Calendar
Release Calendar
Statistics
Our Logo
License Agreement
Privacy Notice
Disclaimer
Digital Preservation
Contact us
Content
Table of Contents
DOIs
Data Schema
Reactome Research Spotlight
ORCID Integration Project
COVID-19 Disease Pathways
Docs
Userguide
Pathway Browser
How do I search ?
Details Panel
Analysis Tools
Analysis Data
Analysis Gene Expression
Species Comparison
Tissue Distribution
Diseases
Cytomics
Review Status of Reactome Events
ReactomeFIViz
Developer's Zone
Graph Database
Analysis Service
Content Service
Pathways Overview
Pathway Diagrams
Icon Info
EHLD Specs & Guidelines
Icon Library Guidelines
Data Model
Curator Guide
Release Documentation
Computationally inferred events
FAQ
Linking to Us
Citing us
Tools
Pathway Browser
Analyse gene list
Analyse gene expression
Species Comparison
Tissue Distribution
Analysis Service
Content Service
ReactomeFIViz
Advanced Data Search
Site Search
Community
Contribute Pathway Knowledge
Icon Library
Outreach
Events
Publications
Partners
Contributors
Resources Guide
Download
Search ...
Go!
CYB5R4 [endoplasmic reticulum membrane]
Stable Identifier
R-HSA-6806860
Type
Protein [EntityWithAccessionedSequence]
Species
Homo sapiens
Compartment
endoplasmic reticulum membrane
Synonyms
Cytochrome b5 reductase 4 ecNumber1.6.2.2/ecNumber, NB5R4_HUMAN
Locations in the PathwayBrowser
Expand all
Transport of small molecules (Homo sapiens)
O2/CO2 exchange in erythrocytes (Homo sapiens)
Erythrocytes take up carbon dioxide and release oxygen (Homo sapiens)
CYB5Rs reduce MetHb to HbA (Homo sapiens)
CYB5Rs [endoplasmic reticulum membrane] (Homo sapiens)
CYB5R4 [endoplasmic reticulum membrane] (Homo sapiens)
External Reference Information
External Reference
UniProt:Q7L1T6 CYB5R4
Gene Names
CYB5R4, NCB5OR
Chain
chain:1-521
Reference Genes
BioGPS Gene:51167 CYB5R4
COSMIC (genes):CYB5R4 CYB5R4
CTD Gene:51167 CYB5R4
dbSNP Gene:51167 CYB5R4
ENSEMBL:ENSG00000065615 CYB5R4
HGNC:20147 CYB5R4
KEGG:hsa:51167 CYB5R4
Monarch:51167 CYB5R4
NCBI Gene:51167 CYB5R4
OMIM:608343 CYB5R4
UCSC:Q7L1T6 CYB5R4
Reference Transcript
RefSeq:NM_016230.3 CYB5R4
Other Identifiers
11724238_at
123956252
17010715
219079_PM_at
219079_at
240020_PM_at
240020_at
2915492
2915493
2915494
2915495
2915496
2915497
2915499
2915501
2915502
2915503
2915504
2915505
2915506
2915507
2915508
2915509
2915512
2915513
2915514
2915516
2915517
2915521
2915522
2915525
2915526
2915527
2915528
2915530
2915532
2915534
2915535
2915536
2915538
2915540
51167
53148_at
55733_at
8120943
A_14_P131672
A_14_P139583
A_19_P00805327
A_19_P00805738
A_23_P30995
A_33_P3267160
A_33_P3316686
GE528696
GE56103
GE892819
GO:0003032
GO:0003824
GO:0004128
GO:0005737
GO:0005783
GO:0005789
GO:0006801
GO:0015701
GO:0016174
GO:0016491
GO:0016653
GO:0020037
GO:0030073
GO:0042593
GO:0043226
GO:0046677
GO:0046872
GO:0048468
GO:0048471
GO:0048856
GO:0072593
HMNXSV003017192
HMNXSV003036189
Hs.105741.0.A1_3p_at
ILMN_1688158
ILMN_1774937
PH_hs_0000584
TC06000774.hg
g7705898_3p_at
Participates
as a member of
CYB5Rs [endoplasmic reticulum membrane] (Homo sapiens)
Inferred To
CYB5R4 [endoplasmic reticulum membrane]
(Bos taurus)
CYB5R4 [endoplasmic reticulum membrane]
(Canis familiaris)
CYB5R4 [endoplasmic reticulum membrane]
(Danio rerio)
CYB5R4 [endoplasmic reticulum membrane]
(Gallus gallus)
CYB5R4 [endoplasmic reticulum membrane]
(Mus musculus)
CYB5R4 [endoplasmic reticulum membrane]
(Rattus norvegicus)
CYB5R4 [endoplasmic reticulum membrane]
(Sus scrofa)
CYB5R4 [endoplasmic reticulum membrane]
(Xenopus tropicalis)
Cross References
ENSEMBL
ENST00000369681
,
ENSP00000358695
,
ENSG00000065615
OpenTargets
ENSG00000065615
IntEnz
1.6.2.2
GeneCards
CYB5R4
HPA
ENSG00000065615-CYB5R4
PRO
Q7L1T6
Pharos - Targets
Q7L1T6
HMDB Protein
HMDBP07265
PDB
3LF5
,
6MV1
,
6MV2
© 2025
Reactome
Cite Us!
Cite Us!
Cite Us!
Warning!
Unable to extract citation. Please try again later.
Download As:
BibTeX
RIS
Text