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GENE AND PROTEIN SUMMARY

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Gene name

XKR4

Description

XK, Kell blood group complex subunit-related family, member 4

Protein class

Mapped to UniProt SWISS-PROT, Potential transmembrane proteins

Protein evidence

Medium

Entrez gene summary

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

1 in total
1 with predicted TM region
0 with predicted signal peptide

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Vesicles

Additional location(s)

Nucleoli, Cytoskeleton (Microtubules) 

Staining summary

Mainly localized to vesicles but also localized to microtubules and nucleoli in U-2 OS cells.

Reliability (APE)

Low

Antibodies in assay

HPA025072, HPA028083
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

General cytoplasmic expression at variable levels.

Tissue specificity

Expressed in 43 out of 81 cell types

Reliability (APE)

Very low

Antibodies in assay

HPA025072, HPA028083
 

Organ

No of cell types

Protein expression

CNS (brain) 11
Hematopoietic (blood) 8
Liver and pancreas 5
Digestive (GI-tract) 13
Respiratory (lung) 4
Cardiovascular 1
Female tissues 12
Placenta 2
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 14
Endocrine tissues 3

Level of annotated protein expression





High
Medium
Low
None

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 56% of the cancers

Antibodies in assay

HPA025072, HPA028083
 

Tissue

Cancer staining

Protein
expression of
normal tissue

Breast cancer
 
Carcinoid
 
Cervical cancer
 
 
Colorectal cancer
 
 
Endometrial cancer
 
 
Glioma
 
Head and neck cancer
 
 
Liver cancer
 
 
Lung cancer
 
 
Lymphoma
 
 
 

Tissue

Cancer staining

Protein
expression of
normal tissue

Melanoma
 
Ovarian cancer
 
Pancreatic cancer
 
Prostate cancer
 
Renal cancer
 
Skin cancer
 
Stomach cancer
 
 
Testis cancer
 
Thyroid cancer
 
Urothelial cancer
 

Level of antibody staining





Strong
Moderate
Weak
Negative

CELL LINE SUMMARY

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RNA evidence

Low
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

HPA025072

HPA028083

HPA025072

HPA028083

A-431 Skin Not detected
StrongNegative
A-549 Lung Not detected
CACO-2 Colon Not detected
HEK 293 Embryonal kidney Not detected
HeLa Cervix Not detected
Hep-G2 Liver Not detected
MCF-7 Pleural effusion Not detected
PC-3 Bone marrow Not detected
RT-4 Urinary bladder Not detected
U-2 OS Bone Low
ModerateNegative
U-251 MG Brain Low
ModerateNegative

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA025072 pAb
HPA028083 pAb