Gene description for SPRR1B
Gene name small proline-rich protein 1B
Gene symbol SPRR1B
Other names/aliases CORNIFIN
GADD33
SPRR1
Species Homo sapiens
 Database cross references - SPRR1B
ExoCarta ExoCarta_6699
Vesiclepedia VP_6699
Entrez Gene 6699
HGNC 11260
MIM 182266
UniProt P22528  
 SPRR1B identified in sEVs derived from the following tissue/cell type
Breast cancer cells 34108659    
Breast cancer cells 34108659    
Embryonic kidney cells 34108659    
Embryonic kidney cells 34108659    
Pancreatic cancer cells 34108659    
Pancreatic cancer cells 34108659    
 Gene ontology annotations for SPRR1B
Molecular Function
    structural molecule activity GO:0005198 TAS
Biological Process
    epidermis development GO:0008544 TAS
    peptide cross-linking GO:0018149 IDA
    keratinocyte differentiation GO:0030216 IDA
    keratinization GO:0031424 IEA
Subcellular Localization
    cornified envelope GO:0001533 IDA
    cornified envelope GO:0001533 TAS
    cytoplasm GO:0005737 TAS
    cytosol GO:0005829 TAS
 Experiment description of studies that identified SPRR1B in sEVs
1
Experiment ID 426
MISEV standards
✘ Biophysical techniques
✔
SDCBP|FLOT1|CD81|CD9|CD151|FLOT2|TSG101|LAMP1|TFRC|RAB5A|RAB35|GAPDH|UCHL1|ICAM1
Enriched markers
✔
CANX
Negative markers
✘ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 34108659    
Organism Homo sapiens
Experiment description Quantitative Proteomics Identifies the Core Proteome of Exosomes with Syntenin-1 as the highest abundant protein and a Putative Universal Biomarker
Authors "Kugeratski FG, Hodge K, Lilla S, McAndrews KM, Zhou X, Hwang RF, Zanivan S, Kalluri R."
Journal name Nat Cell Biol
Publication year 2021
Sample Breast cancer cells
Sample name MDA-MB-231 - Exo-rich fractions 7-10 pooled
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Size exclusion chromatography
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
2
Experiment ID 427
MISEV standards
✘ Biophysical techniques
✔
CD81|SDCBP|FLOT1|CD9|CD151|FLOT2|TSG101|LAMP1|TFRC|RAB5A|RAB35|GAPDH|UCHL1|ICAM1
Enriched markers
✔
CANX
Negative markers
✘ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 34108659    
Organism Homo sapiens
Experiment description Quantitative Proteomics Identifies the Core Proteome of Exosomes with Syntenin-1 as the highest abundant protein and a Putative Universal Biomarker
Authors "Kugeratski FG, Hodge K, Lilla S, McAndrews KM, Zhou X, Hwang RF, Zanivan S, Kalluri R."
Journal name Nat Cell Biol
Publication year 2021
Sample Breast cancer cells
Sample name MDA-MB-231 - Exo-rich fractions 1-6 pooled
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
OptiPrep density gradient centrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
3
Experiment ID 419
MISEV standards
✘ Biophysical techniques
✔
SDCBP|FLOT1|CD81|CD9|CD151|FLOT2|TSG101|LAMP1|TFRC|RAB5A|RAB35|GAPDH|UCHL1|ICAM1
Enriched markers
✔
CANX
Negative markers
✘ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 34108659    
Organism Homo sapiens
Experiment description Quantitative Proteomics Identifies the Core Proteome of Exosomes with Syntenin-1 as the highest abundant protein and a Putative Universal Biomarker
Authors "Kugeratski FG, Hodge K, Lilla S, McAndrews KM, Zhou X, Hwang RF, Zanivan S, Kalluri R."
Journal name Nat Cell Biol
Publication year 2021
Sample Embryonic kidney cells
Sample name HEK293T - Exo-rich fractions 7-10 pooled
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Size exclusion chromatography
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
4
Experiment ID 419
MISEV standards
✘ Biophysical techniques
✔
SDCBP|FLOT1|CD81|CD9|CD151|FLOT2|TSG101|LAMP1|TFRC|RAB5A|RAB35|GAPDH|UCHL1|ICAM1
Enriched markers
✔
CANX
Negative markers
✘ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 34108659    
Organism Homo sapiens
Experiment description Quantitative Proteomics Identifies the Core Proteome of Exosomes with Syntenin-1 as the highest abundant protein and a Putative Universal Biomarker
Authors "Kugeratski FG, Hodge K, Lilla S, McAndrews KM, Zhou X, Hwang RF, Zanivan S, Kalluri R."
Journal name Nat Cell Biol
Publication year 2021
Sample Embryonic kidney cells
Sample name HEK293T - Exo-rich fractions 7-10 pooled
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Size exclusion chromatography
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
5
Experiment ID 420
MISEV standards
✘ Biophysical techniques
✔
CD81|SDCBP|FLOT1|CD9|CD151|FLOT2|TSG101|LAMP1|TFRC|RAB5A|RAB35|GAPDH|UCHL1|ICAM1
Enriched markers
✔
CANX
Negative markers
✘ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 34108659    
Organism Homo sapiens
Experiment description Quantitative Proteomics Identifies the Core Proteome of Exosomes with Syntenin-1 as the highest abundant protein and a Putative Universal Biomarker
Authors "Kugeratski FG, Hodge K, Lilla S, McAndrews KM, Zhou X, Hwang RF, Zanivan S, Kalluri R."
Journal name Nat Cell Biol
Publication year 2021
Sample Embryonic kidney cells
Sample name HEK293T - Exo-rich fractions 1-6 pooled
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
OptiPrep density gradient centrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
6
Experiment ID 420
MISEV standards
✘ Biophysical techniques
✔
CD81|SDCBP|FLOT1|CD9|CD151|FLOT2|TSG101|LAMP1|TFRC|RAB5A|RAB35|GAPDH|UCHL1|ICAM1
Enriched markers
✔
CANX
Negative markers
✘ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 34108659    
Organism Homo sapiens
Experiment description Quantitative Proteomics Identifies the Core Proteome of Exosomes with Syntenin-1 as the highest abundant protein and a Putative Universal Biomarker
Authors "Kugeratski FG, Hodge K, Lilla S, McAndrews KM, Zhou X, Hwang RF, Zanivan S, Kalluri R."
Journal name Nat Cell Biol
Publication year 2021
Sample Embryonic kidney cells
Sample name HEK293T - Exo-rich fractions 1-6 pooled
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
OptiPrep density gradient centrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
7
Experiment ID 434
MISEV standards
✘ Biophysical techniques
✔
SDCBP|FLOT1|CD81|CD9|CD151|FLOT2|TSG101|LAMP1|TFRC|RAB5A|RAB35|GAPDH|UCHL1|ICAM1
Enriched markers
✔
CANX
Negative markers
✘ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 34108659    
Organism Homo sapiens
Experiment description Quantitative Proteomics Identifies the Core Proteome of Exosomes with Syntenin-1 as the highest abundant protein and a Putative Universal Biomarker
Authors "Kugeratski FG, Hodge K, Lilla S, McAndrews KM, Zhou X, Hwang RF, Zanivan S, Kalluri R."
Journal name Nat Cell Biol
Publication year 2021
Sample Pancreatic cancer cells
Sample name PANC-1 - Exo-rich fractions 7-10 pooled
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Size exclusion chromatography
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
8
Experiment ID 435
MISEV standards
✘ Biophysical techniques
✔
CD81|SDCBP|FLOT1|CD9|CD151|FLOT2|TSG101|LAMP1|TFRC|RAB5A|RAB35|GAPDH|UCHL1|ICAM1
Enriched markers
✔
CANX
Negative markers
✘ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 34108659    
Organism Homo sapiens
Experiment description Quantitative Proteomics Identifies the Core Proteome of Exosomes with Syntenin-1 as the highest abundant protein and a Putative Universal Biomarker
Authors "Kugeratski FG, Hodge K, Lilla S, McAndrews KM, Zhou X, Hwang RF, Zanivan S, Kalluri R."
Journal name Nat Cell Biol
Publication year 2021
Sample Pancreatic cancer cells
Sample name PANC-1 - Exo-rich fractions 1-6 pooled
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
OptiPrep density gradient centrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
 Protein-protein interactions for SPRR1B
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 CDAN1 146059
Affinity Capture-MS Homo sapiens
2 Rab5c 19345
Affinity Capture-MS Mus musculus
3 MRM1  
Affinity Capture-MS Homo sapiens
4 PLEKHA4 57664
Affinity Capture-MS Homo sapiens
5 ASF1A 25842
Affinity Capture-MS Homo sapiens
6 PPP2R2B 5521
Affinity Capture-MS Homo sapiens
7 NDST2  
Affinity Capture-MS Homo sapiens
8 TLK2  
Affinity Capture-MS Homo sapiens
9 UBN2  
Affinity Capture-MS Homo sapiens
10 C15orf41  
Affinity Capture-MS Homo sapiens
11 RPAP2  
Affinity Capture-MS Homo sapiens
12 CABIN1  
Affinity Capture-MS Homo sapiens
13 ZC3HC1  
Affinity Capture-MS Homo sapiens
14 ST6GALNAC6 30815
Affinity Capture-MS Homo sapiens
15 LRRC10  
Affinity Capture-MS Homo sapiens
16 KDM4A  
Affinity Capture-MS Homo sapiens
17 ST7  
Affinity Capture-MS Homo sapiens
18 PPL 5493
Affinity Capture-MS Homo sapiens
19 POLR2M  
Affinity Capture-MS Homo sapiens
20 ARG1 383
Affinity Capture-MS Homo sapiens
21 SUV420H2  
Affinity Capture-MS Homo sapiens
22 CALML5 51806
Affinity Capture-MS Homo sapiens
23 TRIM21 6737
Affinity Capture-MS Homo sapiens
24 ITGA9 3680
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
25 UBN1  
Affinity Capture-MS Homo sapiens
26 SCML2  
Affinity Capture-MS Homo sapiens
27 NUDT3 11165
Affinity Capture-MS Homo sapiens
28 HIRA  
Affinity Capture-MS Homo sapiens
29 POC1B 282809
Affinity Capture-MS Homo sapiens
30 FABP5 2171
Affinity Capture-MS Homo sapiens
31 GABPA 2551
Affinity Capture-MS Homo sapiens
32 CCR1  
Affinity Capture-MS Homo sapiens
33 EEF2K  
Affinity Capture-MS Homo sapiens
34 STAG2 10735
Affinity Capture-MS Homo sapiens
35 KPRP 448834
Affinity Capture-MS Homo sapiens
View the network image/svg+xml
 Pathways in which SPRR1B is involved
PathwayEvidenceSource
Developmental Biology TAS Reactome
Formation of the cornified envelope TAS Reactome
Keratinization TAS Reactome





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