#ID(s) interactor A	ID(s) interactor B	Alt. ID(s) interactor A	Alt. ID(s) interactor B	Alias(es) interactor A	Alias(es) interactor B	Interaction detection method(s)	Publication 1st author(s)	Publication Identifier(s)	Taxid interactor A	Taxid interactor B	Interaction type(s)	Source database(s)	Interaction identifier(s)	Confidence value(s)	Expansion method(s)	Biological role(s) interactor A	Biological role(s) interactor B	Experimental role(s) interactor A	Experimental role(s) interactor B	Type(s) interactor A	Type(s) interactor B	Xref(s) interactor A	Xref(s) interactor B	Interaction Xref(s)	Annotation(s) interactor A	Annotation(s) interactor B	Interaction annotation(s)	Host organism(s)	Interaction parameter(s)	Creation date	Update date	Checksum(s) interactor A	Checksum(s) interactor B	Interaction Checksum(s)	Negative	Feature(s) interactor A	Feature(s) interactor B	Stoichiometry(s) interactor A	Stoichiometry(s) interactor B	Identification method participant A	Identification method participant B
ensembl:ENSG00000087245	uniprotkb:P51532	intact:EBI-2942380	intact:EBI-302489|uniprotkb:O95052|uniprotkb:Q9HBD3|uniprotkb:B1A8Z4|uniprotkb:B1A8Z5|uniprotkb:B1A8Z6|uniprotkb:B1A8Z7|uniprotkb:E9PBR8|ensembl:ENSP00000343896|ensembl:ENSP00000395654	psi-mi:mmp2_human_gene(display_short)|psi-mi:ENSG00000087245(display_long)	psi-mi:smca4_human(display_long)|uniprotkb:SMARCA4(gene name)|psi-mi:SMARCA4(display_short)|uniprotkb:BRG1(gene name synonym)|uniprotkb:SNF2B(gene name synonym)|uniprotkb:SNF2L4(gene name synonym)|uniprotkb:ATP-dependent helicase SMARCA4(gene name synonym)|uniprotkb:SNF2-beta(gene name synonym)|uniprotkb:BAF190A(gene name synonym)|uniprotkb:Mitotic growth and transcription activator(gene name synonym)|uniprotkb:Protein BRG-1(gene name synonym)|uniprotkb:SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily A member 4(gene name synonym)|uniprotkb:Protein brahma homolog 1(gene name synonym)|uniprotkb:BRG1-associated factor 190A(gene name synonym)	psi-mi:"MI:0402"(chromatin immunoprecipitation assay)	Saladi et al. (2010)	imex:IM-15145|pubmed:20969766	taxid:9606(human)|taxid:9606(Homo sapiens)	taxid:9606(human)|taxid:9606(Homo sapiens)	psi-mi:"MI:0914"(association)	psi-mi:"MI:1263"(Molecular Connections)	intact:EBI-2942383|imex:IM-15145-2	-	-	psi-mi:"MI:0499"(unspecified role)	psi-mi:"MI:0499"(unspecified role)	psi-mi:"MI:0498"(prey)	psi-mi:"MI:0496"(bait)	psi-mi:"MI:0250"(gene)	psi-mi:"MI:0326"(protein)	-	refseq:NP_001122316.1|refseq:NP_003063.2|refseq:NP_001122317.1|refseq:NP_001122318.1|refseq:NP_001122319.1|refseq:NP_001122320.1|dip:DIP-24249N|refseq:XP_016882654.1|refseq:XP_016882655.1|refseq:XP_016882656.1|refseq:XP_016882657.1|ensembl:ENSG00000127616(gene)|ensembl:ENST00000344626(transcript)|ensembl:ENST00000429416(transcript)|go:"GO:0000122"(negative regulation of transcription by RNA polymerase II)|go:"GO:0000785"(chromatin)|go:"GO:0001188"(RNA polymerase I preinitiation complex assembly)|go:"GO:0002039"(p53 binding)|go:"GO:0003407"(neural retina development)|go:"GO:0003677"(DNA binding)|go:"GO:0003713"(transcription coactivator activity)|go:"GO:0003714"(transcription corepressor activity)|go:"GO:0003723"(RNA binding)|go:"GO:0004386"(helicase activity)|go:"GO:0005524"(ATP binding)|go:"GO:0005615"(extracellular space)|go:"GO:0005634"(nucleus)|go:"GO:0005654"(nucleoplasm)|go:"GO:0005730"(nucleolus)|go:"GO:0006337"(nucleosome disassembly)|go:"GO:0006338"(chromatin remodeling)|go:"GO:0006357"(regulation of transcription by RNA polymerase II)|go:"GO:0007399"(nervous system development)|go:"GO:0008094"(ATP-dependent activity, acting on DNA)|go:"GO:0008134"(transcription factor binding)|go:"GO:0016020"(membrane)|go:"GO:0016514"(SWI/SNF complex)|go:"GO:0016787"(hydrolase activity)|go:"GO:0030177"(positive regulation of Wnt signaling pathway)|go:"GO:0030308"(negative regulation of cell growth)|go:"GO:0030957"(Tat protein binding)|go:"GO:0032991"(protein-containing complex)|go:"GO:0043044"|go:"GO:0043923"(positive regulation by host of viral transcription)|go:"GO:0045892"(negative regulation of transcription, DNA-templated)|go:"GO:0045893"(positive regulation of transcription, DNA-templated)|go:"GO:0045944"(positive regulation of transcription by RNA polymerase II)|go:"GO:0047485"(protein N-terminus binding)|go:"GO:0050681"(androgen receptor binding)|go:"GO:0051091"(positive regulation of DNA-binding transcription factor activity)|go:"GO:0060766"(negative regulation of androgen receptor signaling pathway)|go:"GO:0070182"(DNA polymerase binding)|go:"GO:0070577"(lysine-acetylated histone binding)|go:"GO:0070615"|go:"GO:0071564"(npBAF complex)|go:"GO:0071565"(nBAF complex)|go:"GO:1901838"(positive regulation of transcription of nucleolar large rRNA by RNA polymerase I)|go:"GO:1902661"(positive regulation of glucose mediated signaling pathway)|go:"GO:1902895"(positive regulation of miRNA transcription)|interpro:IPR000330(SNF2-related)|interpro:IPR001487(Bromodomain)|interpro:IPR001650(DNA/RNA helicase, C-terminal)|interpro:IPR006576(BRK)|interpro:IPR014001(DEAD-like helicase, N-terminal)|interpro:IPR014012(Helicase/SANT-associated, DNA binding)|interpro:IPR014978(QLQ)|interpro:IPR018359|interpro:IPR027417|interpro:IPR029295|interpro:IPR030100|interpro:IPR036427|interpro:IPR037259|interpro:IPR038718|mint:P51532|rcsb pdb:2GRC|rcsb pdb:2H60|rcsb pdb:3UVD|rcsb pdb:5DKD|rcsb pdb:5EA1|rcsb pdb:6BGH|rcsb pdb:6HR2|rcsb pdb:6LTH|rcsb pdb:6LTJ|rcsb pdb:6SY2|rcsb pdb:6ZS2|reactome:R-HSA-1266695|reactome:R-HSA-201722|reactome:R-HSA-3214858|reactome:R-HSA-3247509|reactome:R-HSA-8939243|reactome:R-HSA-9619665	-	-	-	figure legend:fig. 7d|comment:BRG1 was significantly enriched on the MMP2 promoter compared to the control CD25 region. SP1 binding to the MMP2 promoter was significantly increased in SK+MEL5+BRG1 as compared to control.|dataset:Cancer - Interactions investigated in the context of cancer|full coverage:Only protein-protein interactions|curation depth:imex curation	taxid:9606(human-sk_mel_5)|taxid:9606(Homo sapiens)	-	2010/11/09	2014/10/16	-	rogid:Ztr+2IXfAxueSUaNYG2A47HoMes9606	intact-crc:9AF2F8CB06F45C46	false	-	flag tag:?-?	-	-	psi-mi:"MI:0088"(primer specific pcr)	psi-mi:"MI:0088"(primer specific pcr)
ensembl:ENSG00000087245	uniprotkb:P08047	intact:EBI-2942380	intact:EBI-298336|uniprotkb:Q86TN8|uniprotkb:Q9H3Q5|uniprotkb:Q9NR51|uniprotkb:Q9NY21|uniprotkb:Q9NYE7|intact:EBI-28977878|ensembl:ENSP00000329357|uniprotkb:E4Z9M7|uniprotkb:G5E9M8	psi-mi:mmp2_human_gene(display_short)|psi-mi:ENSG00000087245(display_long)	psi-mi:sp1_human(display_long)|uniprotkb:SP1(gene name)|psi-mi:SP1(display_short)|uniprotkb:TSFP1(gene name synonym)	psi-mi:"MI:0402"(chromatin immunoprecipitation assay)	Saladi et al. (2010)	imex:IM-15145|pubmed:20969766	taxid:9606(human)|taxid:9606(Homo sapiens)	taxid:9606(human)|taxid:9606(Homo sapiens)	psi-mi:"MI:0914"(association)	psi-mi:"MI:1263"(Molecular Connections)	intact:EBI-2942387|imex:IM-15145-3	-	-	psi-mi:"MI:0499"(unspecified role)	psi-mi:"MI:0499"(unspecified role)	psi-mi:"MI:0498"(prey)	psi-mi:"MI:0496"(bait)	psi-mi:"MI:0250"(gene)	psi-mi:"MI:0326"(protein)	-	refseq:NP_003100.1|refseq:NP_612482.2|ensembl:ENSG00000185591(gene)|ensembl:ENST00000327443(transcript)|go:"GO:0000785"(chromatin)|go:"GO:0000791"(euchromatin)|go:"GO:0000976"(transcription cis-regulatory region binding)|go:"GO:0000977"(RNA polymerase II transcription regulatory region sequence-specific DNA binding)|go:"GO:0000978"(RNA polymerase II cis-regulatory region sequence-specific DNA binding)|go:"GO:0000981"(DNA-binding transcription factor activity, RNA polymerase II-specific)|go:"GO:0000987"(cis-regulatory region sequence-specific DNA binding)|go:"GO:0001221"(transcription coregulator binding)|go:"GO:0001228"(DNA-binding transcription activator activity, RNA polymerase II-specific)|go:"GO:0003677"(DNA binding)|go:"GO:0003690"(double-stranded DNA binding)|go:"GO:0003700"(DNA-binding transcription factor activity)|go:"GO:0005634"(nucleus)|go:"GO:0005654"(nucleoplasm)|go:"GO:0005737"(cytoplasm)|go:"GO:0006355"(regulation of transcription, DNA-templated)|go:"GO:0006357"(regulation of transcription by RNA polymerase II)|go:"GO:0008022"(protein C-terminus binding)|go:"GO:0008134"(transcription factor binding)|go:"GO:0010628"(positive regulation of gene expression)|go:"GO:0017053"(transcription repressor complex)|go:"GO:0032869"(cellular response to insulin stimulus)|go:"GO:0032993"(protein-DNA complex)|go:"GO:0033194"(response to hydroperoxide)|go:"GO:0035035"(histone acetyltransferase binding)|go:"GO:0042802"(identical protein binding)|go:"GO:0042803"(protein homodimerization activity)|go:"GO:0042826"(histone deacetylase binding)|go:"GO:0043425"(bHLH transcription factor binding)|go:"GO:0043536"(positive regulation of blood vessel endothelial cell migration)|go:"GO:0043565"(sequence-specific DNA binding)|go:"GO:0043923"(positive regulation by host of viral transcription)|go:"GO:0045766"(positive regulation of angiogenesis)|go:"GO:0045893"(positive regulation of transcription, DNA-templated)|go:"GO:0045944"(positive regulation of transcription by RNA polymerase II)|go:"GO:0046872"(metal ion binding)|go:"GO:0048511"(rhythmic process)|go:"GO:0061629"(RNA polymerase II-specific DNA-binding transcription factor binding)|go:"GO:0071837"(HMG box domain binding)|go:"GO:0140297"(DNA-binding transcription factor binding)|go:"GO:1902004"(positive regulation of amyloid-beta formation)|go:"GO:1904828"(positive regulation of hydrogen sulfide biosynthetic process)|go:"GO:1905564"(positive regulation of vascular endothelial cell proliferation)|go:"GO:1990837"(sequence-specific double-stranded DNA binding)|interpro:IPR013087(Zinc finger, C2H2-type/integrase, DNA-binding)|interpro:IPR036236|mint:P08047|rcsb pdb:1SP1|rcsb pdb:1SP2|rcsb pdb:1VA1|rcsb pdb:1VA2|rcsb pdb:1VA3|rcsb pdb:6PV0|rcsb pdb:6PV1|rcsb pdb:6PV2|rcsb pdb:6PV3|rcsb pdb:6UCO|rcsb pdb:6UCP|reactome:R-HSA-1989781|reactome:R-HSA-2173796|reactome:R-HSA-2426168|reactome:R-HSA-2559585|reactome:R-HSA-6807505|reactome:R-HSA-9018519|ensembl:ENSP00000329357|ensembl:ENST00000426431|ensembl:ENSP00000404263|refseq:NP_001238754.1|refseq:XP_011536998.1|dip:DIP-36N	-	-	-	figure legend:fig. 7e|agonist:Brg1|comment:BRG1 was significantly enriched on the MMP2 promoter compared to the control CD25 region. SP1 binding to the MMP2 promoter was significantly increased in SK+MEL5+BRG1 as compared to control cells.|dataset:Cancer - Interactions investigated in the context of cancer|full coverage:Only protein-protein interactions|curation depth:imex curation	taxid:9606(human-sk_mel_5)|taxid:9606(Homo sapiens)	-	2010/11/09	2014/10/16	-	rogid:mrIGsFyZTBVulhjVjVxNjFnTm5c9606	intact-crc:F29607949B74830F	false	-	-	-	-	psi-mi:"MI:0088"(primer specific pcr)	psi-mi:"MI:0088"(primer specific pcr)
uniprotkb:P51532	uniprotkb:P08047	intact:EBI-302489|uniprotkb:O95052|uniprotkb:Q9HBD3|uniprotkb:B1A8Z4|uniprotkb:B1A8Z5|uniprotkb:B1A8Z6|uniprotkb:B1A8Z7|uniprotkb:E9PBR8|ensembl:ENSP00000343896|ensembl:ENSP00000395654	intact:EBI-298336|uniprotkb:Q86TN8|uniprotkb:Q9H3Q5|uniprotkb:Q9NR51|uniprotkb:Q9NY21|uniprotkb:Q9NYE7|intact:EBI-28977878|ensembl:ENSP00000329357|uniprotkb:E4Z9M7|uniprotkb:G5E9M8	psi-mi:smca4_human(display_long)|uniprotkb:SMARCA4(gene name)|psi-mi:SMARCA4(display_short)|uniprotkb:BRG1(gene name synonym)|uniprotkb:SNF2B(gene name synonym)|uniprotkb:SNF2L4(gene name synonym)|uniprotkb:ATP-dependent helicase SMARCA4(gene name synonym)|uniprotkb:SNF2-beta(gene name synonym)|uniprotkb:BAF190A(gene name synonym)|uniprotkb:Mitotic growth and transcription activator(gene name synonym)|uniprotkb:Protein BRG-1(gene name synonym)|uniprotkb:SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily A member 4(gene name synonym)|uniprotkb:Protein brahma homolog 1(gene name synonym)|uniprotkb:BRG1-associated factor 190A(gene name synonym)	psi-mi:sp1_human(display_long)|uniprotkb:SP1(gene name)|psi-mi:SP1(display_short)|uniprotkb:TSFP1(gene name synonym)	psi-mi:"MI:0019"(coimmunoprecipitation)	Saladi et al. (2010)	imex:IM-15145|pubmed:20969766	taxid:9606(human)|taxid:9606(Homo sapiens)	taxid:9606(human)|taxid:9606(Homo sapiens)	psi-mi:"MI:0915"(physical association)	psi-mi:"MI:1263"(Molecular Connections)	intact:EBI-2942401|imex:IM-15145-1	-	-	psi-mi:"MI:0499"(unspecified role)	psi-mi:"MI:0499"(unspecified role)	psi-mi:"MI:0496"(bait)	psi-mi:"MI:0498"(prey)	psi-mi:"MI:0326"(protein)	psi-mi:"MI:0326"(protein)	refseq:NP_001122316.1|refseq:NP_003063.2|refseq:NP_001122317.1|refseq:NP_001122318.1|refseq:NP_001122319.1|refseq:NP_001122320.1|dip:DIP-24249N|refseq:XP_016882654.1|refseq:XP_016882655.1|refseq:XP_016882656.1|refseq:XP_016882657.1|ensembl:ENSG00000127616(gene)|ensembl:ENST00000344626(transcript)|ensembl:ENST00000429416(transcript)|go:"GO:0000122"(negative regulation of transcription by RNA polymerase II)|go:"GO:0000785"(chromatin)|go:"GO:0001188"(RNA polymerase I preinitiation complex assembly)|go:"GO:0002039"(p53 binding)|go:"GO:0003407"(neural retina development)|go:"GO:0003677"(DNA binding)|go:"GO:0003713"(transcription coactivator activity)|go:"GO:0003714"(transcription corepressor activity)|go:"GO:0003723"(RNA binding)|go:"GO:0004386"(helicase activity)|go:"GO:0005524"(ATP binding)|go:"GO:0005615"(extracellular space)|go:"GO:0005634"(nucleus)|go:"GO:0005654"(nucleoplasm)|go:"GO:0005730"(nucleolus)|go:"GO:0006337"(nucleosome disassembly)|go:"GO:0006338"(chromatin remodeling)|go:"GO:0006357"(regulation of transcription by RNA polymerase II)|go:"GO:0007399"(nervous system development)|go:"GO:0008094"(ATP-dependent activity, acting on DNA)|go:"GO:0008134"(transcription factor binding)|go:"GO:0016020"(membrane)|go:"GO:0016514"(SWI/SNF complex)|go:"GO:0016787"(hydrolase activity)|go:"GO:0030177"(positive regulation of Wnt signaling pathway)|go:"GO:0030308"(negative regulation of cell growth)|go:"GO:0030957"(Tat protein binding)|go:"GO:0032991"(protein-containing complex)|go:"GO:0043044"|go:"GO:0043923"(positive regulation by host of viral transcription)|go:"GO:0045892"(negative regulation of transcription, DNA-templated)|go:"GO:0045893"(positive regulation of transcription, DNA-templated)|go:"GO:0045944"(positive regulation of transcription by RNA polymerase II)|go:"GO:0047485"(protein N-terminus binding)|go:"GO:0050681"(androgen receptor binding)|go:"GO:0051091"(positive regulation of DNA-binding transcription factor activity)|go:"GO:0060766"(negative regulation of androgen receptor signaling pathway)|go:"GO:0070182"(DNA polymerase binding)|go:"GO:0070577"(lysine-acetylated histone binding)|go:"GO:0070615"|go:"GO:0071564"(npBAF complex)|go:"GO:0071565"(nBAF complex)|go:"GO:1901838"(positive regulation of transcription of nucleolar large rRNA by RNA polymerase I)|go:"GO:1902661"(positive regulation of glucose mediated signaling pathway)|go:"GO:1902895"(positive regulation of miRNA transcription)|interpro:IPR000330(SNF2-related)|interpro:IPR001487(Bromodomain)|interpro:IPR001650(DNA/RNA helicase, C-terminal)|interpro:IPR006576(BRK)|interpro:IPR014001(DEAD-like helicase, N-terminal)|interpro:IPR014012(Helicase/SANT-associated, DNA binding)|interpro:IPR014978(QLQ)|interpro:IPR018359|interpro:IPR027417|interpro:IPR029295|interpro:IPR030100|interpro:IPR036427|interpro:IPR037259|interpro:IPR038718|mint:P51532|rcsb pdb:2GRC|rcsb pdb:2H60|rcsb pdb:3UVD|rcsb pdb:5DKD|rcsb pdb:5EA1|rcsb pdb:6BGH|rcsb pdb:6HR2|rcsb pdb:6LTH|rcsb pdb:6LTJ|rcsb pdb:6SY2|rcsb pdb:6ZS2|reactome:R-HSA-1266695|reactome:R-HSA-201722|reactome:R-HSA-3214858|reactome:R-HSA-3247509|reactome:R-HSA-8939243|reactome:R-HSA-9619665	refseq:NP_003100.1|refseq:NP_612482.2|ensembl:ENSG00000185591(gene)|ensembl:ENST00000327443(transcript)|go:"GO:0000785"(chromatin)|go:"GO:0000791"(euchromatin)|go:"GO:0000976"(transcription cis-regulatory region binding)|go:"GO:0000977"(RNA polymerase II transcription regulatory region sequence-specific DNA binding)|go:"GO:0000978"(RNA polymerase II cis-regulatory region sequence-specific DNA binding)|go:"GO:0000981"(DNA-binding transcription factor activity, RNA polymerase II-specific)|go:"GO:0000987"(cis-regulatory region sequence-specific DNA binding)|go:"GO:0001221"(transcription coregulator binding)|go:"GO:0001228"(DNA-binding transcription activator activity, RNA polymerase II-specific)|go:"GO:0003677"(DNA binding)|go:"GO:0003690"(double-stranded DNA binding)|go:"GO:0003700"(DNA-binding transcription factor activity)|go:"GO:0005634"(nucleus)|go:"GO:0005654"(nucleoplasm)|go:"GO:0005737"(cytoplasm)|go:"GO:0006355"(regulation of transcription, DNA-templated)|go:"GO:0006357"(regulation of transcription by RNA polymerase II)|go:"GO:0008022"(protein C-terminus binding)|go:"GO:0008134"(transcription factor binding)|go:"GO:0010628"(positive regulation of gene expression)|go:"GO:0017053"(transcription repressor complex)|go:"GO:0032869"(cellular response to insulin stimulus)|go:"GO:0032993"(protein-DNA complex)|go:"GO:0033194"(response to hydroperoxide)|go:"GO:0035035"(histone acetyltransferase binding)|go:"GO:0042802"(identical protein binding)|go:"GO:0042803"(protein homodimerization activity)|go:"GO:0042826"(histone deacetylase binding)|go:"GO:0043425"(bHLH transcription factor binding)|go:"GO:0043536"(positive regulation of blood vessel endothelial cell migration)|go:"GO:0043565"(sequence-specific DNA binding)|go:"GO:0043923"(positive regulation by host of viral transcription)|go:"GO:0045766"(positive regulation of angiogenesis)|go:"GO:0045893"(positive regulation of transcription, DNA-templated)|go:"GO:0045944"(positive regulation of transcription by RNA polymerase II)|go:"GO:0046872"(metal ion binding)|go:"GO:0048511"(rhythmic process)|go:"GO:0061629"(RNA polymerase II-specific DNA-binding transcription factor binding)|go:"GO:0071837"(HMG box domain binding)|go:"GO:0140297"(DNA-binding transcription factor binding)|go:"GO:1902004"(positive regulation of amyloid-beta formation)|go:"GO:1904828"(positive regulation of hydrogen sulfide biosynthetic process)|go:"GO:1905564"(positive regulation of vascular endothelial cell proliferation)|go:"GO:1990837"(sequence-specific double-stranded DNA binding)|interpro:IPR013087(Zinc finger, C2H2-type/integrase, DNA-binding)|interpro:IPR036236|mint:P08047|rcsb pdb:1SP1|rcsb pdb:1SP2|rcsb pdb:1VA1|rcsb pdb:1VA2|rcsb pdb:1VA3|rcsb pdb:6PV0|rcsb pdb:6PV1|rcsb pdb:6PV2|rcsb pdb:6PV3|rcsb pdb:6UCO|rcsb pdb:6UCP|reactome:R-HSA-1989781|reactome:R-HSA-2173796|reactome:R-HSA-2426168|reactome:R-HSA-2559585|reactome:R-HSA-6807505|reactome:R-HSA-9018519|ensembl:ENSP00000329357|ensembl:ENST00000426431|ensembl:ENSP00000404263|refseq:NP_001238754.1|refseq:XP_011536998.1|dip:DIP-36N	psi-mi:"MI:0469"(intact)	-	-	figure legend:fig. 7c|dataset:Cancer - Interactions investigated in the context of cancer|full coverage:Only protein-protein interactions|curation depth:imex curation	taxid:9606(human-sk_mel_5)|taxid:9606(Homo sapiens)	-	2010/11/09	2014/10/16	rogid:Ztr+2IXfAxueSUaNYG2A47HoMes9606	rogid:mrIGsFyZTBVulhjVjVxNjFnTm5c9606	intact-crc:751ED659C9626515|rigid:P+PCneB3xXBrodIxLJMZRdNm6M8	false	flag tag:?-?	-	-	-	psi-mi:"MI:0113"(western blot)	psi-mi:"MI:0113"(western blot)