A6NJZ3_Q8NH37.1 contacts (residues)

ReceptorR: Secondary StructureR: ResidueR; ChainR: Residue numberLigandL: Secondary StructureL: ResidueL: ChainL: Residue Number
RHPHEA100LHPHEV100
RHPHEA100LHPHEV104
RHPHEA101LHPHEV104
RHPHEA101LHTRPV147
R-SERA135L-TYRV85
RHASNA136L-LEUV84
RHASNA136L-TYRV85
RHLYSA137L-TYRV85
RHLYSA137L-GLYV87
RHASNA140LHALAV81
RHASNA140L-TYRV85
RHTRPA141LHLYSV78
RHTRPA141LSTHRV89
RHTRPA141LSILEV90
RHTRPA141LSSERV91
RHTRPA141LHCYSV94
RHILEA144LHLYSV78
RHILEA144LHCYSV94
RHTRPA147LHPHEV70
RHLEUA148LSSERV91
RHLEUA148LHGLUV93
RHLEUA148LHCYSV94
RHLEUA148LHALAV97
RHPHEA151LHPHEV100
RHPHEA151LHALAV97
RHLEUA152LHGLUV93
RHPHEA155LHLEUV158
RHLEUA162LHPHEV151
RHTYRA33LHVALV44
RHTYRA33LHTHRV48
RHLEUA34LHSERV49
RHVALA37LHVALV45
RHMETA41LHCYSV38
RHMETA41LHMETV41
RHMETA41LHVALV45
RHMETA45LHCYSV38
RHLEUA48LHLEUV30
RHLEUA48LHVALV34
RHLEUA48LHCYSV38
RHPHEA66LHVALV37
RHPHEA66LHMETV41
RHPHEA66LHTHRV69
RHPHEA66LHPHEV70
RHILEA69LHMETV41
RHSERA70LHMETV41
RHSERA70LHPHEV66
RHSERA70LHPHEV70
RHTHRA73LHVALV44
RHTHRA73LHPHEV66
RHPROA77LHTHRV48
RHARGA78LHALAV140
R-ARGA8LHMETV141
RHILEA81LHARGV136
RHILEA81LHPHEV59
RHALAA84LHARGV136
RHTHRA85LHARGV136
R-ASPA87LHHISV137
RSTHRA89LHHISV137
RSGLUA9LHHISV137
RSGLUA9LHMETV141
RSSERA91LHMETV141
RSSERA91LHGLYV144
RHASNA93LHGLYV144
RHASNA93LHVALV145
RHASNA93LHLEUV148
RHALAA94LHGLYV144
RHALAA97LHTRPV147

 - Title of columns started by 'R:' means Receptor, 'L:' means Ligand
 - In the Secondary Structure columns: 'H' means that residues in that row are part of Alpha Helix; 'S' - Beta Sheet





A6NJZ3_Q8NH37.1 contacts (residues & atoms)

ReceptorR: Secondary StructureR: AtomR: ResidueR; ChainR: Residue numberLigandL: Secondary StructureL; AtomL: ResidueL: ChainL: Residue Number
R-OARGA8LHHE1METV141
RSCGGLUA9LHHE2HISV137
RSCGGLUA9LHSDMETV141
RSCGGLUA9LHHE1METV141
RSCGGLUA9LHHE2METV141
RSCDGLUA9LHCE1HISV137
RSCDGLUA9LHNE2HISV137
RSCDGLUA9LHHE1HISV137
RSCDGLUA9LHHE2HISV137
RSCDGLUA9LHHE2METV141
RSOE1GLUA9LHCE1HISV137
RSOE1GLUA9LHNE2HISV137
RSOE1GLUA9LHHE1HISV137
RSOE1GLUA9LHHE2HISV137
RSOE1GLUA9LHCGMETV141
RSOE1GLUA9LHSDMETV141
RSOE1GLUA9LHCEMETV141
RSOE1GLUA9LHHG3METV141
RSOE1GLUA9LHHE1METV141
RSOE1GLUA9LHHE2METV141
RSOE2GLUA9LHCE1HISV137
RSOE2GLUA9LHNE2HISV137
RSOE2GLUA9LHHE1HISV137
RSOE2GLUA9LHHE2HISV137
RHCE1TYRA33LHCBTHRV48
RHCE1TYRA33LHOG1THRV48
RHCE1TYRA33LHHBTHRV48
RHOHTYRA33LHHG11VALV44
RHOHTYRA33LHOG1THRV48
RHOHTYRA33LHHG21THRV48
RHCZTYRA33LHHG21THRV48
RHCGLEUA34LHOGSERV49
RHCGLEUA34LHHB3SERV49
RHCD1LEUA34LHHASERV49
RHCD1LEUA34LHHB3SERV49
RHCD2LEUA34LHCASERV49
RHCD2LEUA34LHCBSERV49
RHCD2LEUA34LHOGSERV49
RHCD2LEUA34LHHASERV49
RHCD2LEUA34LHHB2SERV49
RHCD2LEUA34LHHB3SERV49
RHCD2LEUA34LHHGSERV49
RHCBVALA37LHCG2VALV45
RHCBVALA37LHHG22VALV45
RHCBVALA37LHHG23VALV45
RHCG1VALA37LHCBVALV45
RHCG1VALA37LHCG1VALV45
RHCG1VALA37LHCG2VALV45
RHCG1VALA37LHHG12VALV45
RHCG1VALA37LHHG13VALV45
RHCG1VALA37LHHG21VALV45
RHCG1VALA37LHHG22VALV45
RHCG1VALA37LHHG23VALV45
RHCG2VALA37LHHG23VALV45
RHCGMETA41LHHB3METV41
RHCGMETA41LHHG22VALV45
RHSDMETA41LHCBMETV41
RHSDMETA41LHHB2METV41
RHSDMETA41LHHB3METV41
RHSDMETA41LHHG3METV41
RHCEMETA41LHOCYSV38
RHCEMETA41LHHACYSV38
RHCEMETA41LHCBMETV41
RHCEMETA41LHHB2METV41
RHCEMETA41LHHB3METV41
RHSDMETA45LHCBCYSV38
RHSDMETA45LHSGCYSV38
RHSDMETA45LHHB3CYSV38
RHSDMETA45LHHGCYSV38
RHCEMETA45LHSGCYSV38
RHCEMETA45LHHB3CYSV38
RHCBLEUA48LHHG12VALV34
RHCBLEUA48LHHG13VALV34
RHCBLEUA48LHHG22VALV34
RHCBLEUA48LHHG23VALV34
RHCGLEUA48LHCG2VALV34
RHCGLEUA48LHHG13VALV34
RHCGLEUA48LHHG22VALV34
RHCGLEUA48LHHG23VALV34
RHCD1LEUA48LHCBVALV34
RHCD1LEUA48LHCG1VALV34
RHCD1LEUA48LHCG2VALV34
RHCD1LEUA48LHHAVALV34
RHCD1LEUA48LHHG12VALV34
RHCD1LEUA48LHHG13VALV34
RHCD1LEUA48LHHG22VALV34
RHCD1LEUA48LHHG23VALV34
RHCD1LEUA48LHHGCYSV38
RHCD2LEUA48LHHD12LEUV30
RHCD2LEUA48LHCG2VALV34
RHCD2LEUA48LHHG21VALV34
RHCD2LEUA48LHHG22VALV34
RHCD2LEUA48LHHG23VALV34
RHCD2PHEA66LHHG13VALV37
RHCD2PHEA66LHCEMETV41
RHCD2PHEA66LHHE2METV41
RHCD2PHEA66LHHE3METV41
RHCD2PHEA66LHHG21THRV69
RHCD2PHEA66LHHG23THRV69
RHCE1PHEA66LHCD1PHEV70
RHCE1PHEA66LHCE1PHEV70
RHCE1PHEA66LHHE1PHEV70
RHCE2PHEA66LHHG13VALV37
RHCE2PHEA66LHCEMETV41
RHCE2PHEA66LHHE1METV41
RHCE2PHEA66LHHE2METV41
RHCE2PHEA66LHHE3METV41
RHCE2PHEA66LHCG2THRV69
RHCE2PHEA66LHHG21THRV69
RHCE2PHEA66LHHG22THRV69
RHCE2PHEA66LHHG23THRV69
RHCZPHEA66LHHE3METV41
RHCZPHEA66LHCG2THRV69
RHCZPHEA66LHHG21THRV69
RHCZPHEA66LHHG23THRV69
RHCZPHEA66LHCD1PHEV70
RHCZPHEA66LHCE1PHEV70
RHCZPHEA66LHCZPHEV70
RHCZPHEA66LHHAPHEV70
RHCZPHEA66LHHD1PHEV70
RHCZPHEA66LHHE1PHEV70
RHCZPHEA66LHHZPHEV70
RHCBILEA69LHHE2METV41
RHCG2ILEA69LHSDMETV41
RHCG2ILEA69LHCEMETV41
RHCG2ILEA69LHHE1METV41
RHCG2ILEA69LHHE2METV41
RHCD1ILEA69LHHE2METV41
RHNSERA70LHHZPHEV70
RHCASERA70LHHE2PHEV66
RHCASERA70LHHZPHEV70
RHCBSERA70LHCE1PHEV70
RHCBSERA70LHCZPHEV70
RHCBSERA70LHHE1PHEV70
RHCBSERA70LHHZPHEV70
RHOSERA70LHHE2PHEV66
RHOSERA70LHHZPHEV66
RHOGSERA70LHHE1METV41
RHOGSERA70LHCE1PHEV70
RHOGSERA70LHCE2PHEV70
RHOGSERA70LHCZPHEV70
RHOGSERA70LHHE1PHEV70
RHOGSERA70LHHE2PHEV70
RHOGSERA70LHHZPHEV70
RHCBTHRA73LHHE2PHEV66
RHCG2THRA73LHHG13VALV44
RHCG2THRA73LHCD2PHEV66
RHCG2THRA73LHCE2PHEV66
RHCG2THRA73LHHD2PHEV66
RHCG2THRA73LHHE2PHEV66
RHOG1THRA73LHHE2PHEV66
RHCGPROA77LHHG21THRV48
RHNH1ARGA78LHCBALAV140
RHNH1ARGA78LHHB1ALAV140
RHNH1ARGA78LHHB2ALAV140
RHNH1ARGA78LHHB3ALAV140
RHNH2ARGA78LHCBALAV140
RHNH2ARGA78LHHB1ALAV140
RHNH2ARGA78LHHB2ALAV140
RHNH2ARGA78LHHB3ALAV140
RHCZARGA78LHCBALAV140
RHCZARGA78LHHB1ALAV140
RHCZARGA78LHHB2ALAV140
RHCZARGA78LHHB3ALAV140
RHCAILEA81LHHH11ARGV136
RHCBILEA81LHHH11ARGV136
RHOILEA81LHHH11ARGV136
RHCG1ILEA81LHHH11ARGV136
RHCG2ILEA81LHNH1ARGV136
RHCG2ILEA81LHHB3ARGV136
RHCG2ILEA81LHHD3ARGV136
RHCG2ILEA81LHHH11ARGV136
RHCD1ILEA81LHHE2PHEV59
RHCBALAA84LHHH12ARGV136
RHCBTHRA85LHHD2ARGV136
RHCG2THRA85LHCDARGV136
RHCG2THRA85LHNEARGV136
RHCG2THRA85LHNH1ARGV136
RHCG2THRA85LHCZARGV136
RHCG2THRA85LHHD2ARGV136
RHCG2THRA85LHHD3ARGV136
RHCG2THRA85LHHH11ARGV136
RHCG2THRA85LHHH12ARGV136
R-CGASPA87LHCD2HISV137
R-CGASPA87LHHB2HISV137
R-CGASPA87LHHD2HISV137
R-OD1ASPA87LHCD2HISV137
R-OD1ASPA87LHHD2HISV137
R-OD2ASPA87LHCAHISV137
R-OD2ASPA87LHCBHISV137
R-OD2ASPA87LHCGHISV137
R-OD2ASPA87LHCD2HISV137
R-OD2ASPA87LHHAHISV137
R-OD2ASPA87LHHB2HISV137
R-OD2ASPA87LHHB3HISV137
R-OD2ASPA87LHHD2HISV137
RSCBTHRA89LHCD2HISV137
RSCBTHRA89LHNE2HISV137
RSCBTHRA89LHHD2HISV137
RSCBTHRA89LHHE2HISV137
RSCG2THRA89LHHD2HISV137
RSCG2THRA89LHHE2HISV137
RSOG1THRA89LHCGHISV137
RSOG1THRA89LHCD2HISV137
RSOG1THRA89LHNE2HISV137
RSOG1THRA89LHHD2HISV137
RSOG1THRA89LHHE2HISV137
RSNSERA91LHSDMETV141
RSCASERA91LHSDMETV141
RSCASERA91LHHE1METV141
RSCBSERA91LHSDMETV141
RSCBSERA91LHCEMETV141
RSCBSERA91LHHAMETV141
RSCBSERA91LHHE1METV141
RSCBSERA91LHHE3METV141
RSOGSERA91LHSDMETV141
RSOGSERA91LHHAMETV141
RSOGSERA91LHCAGLYV144
RSOGSERA91LHHA3GLYV144
RHCAASNA93LHHB3LEUV148
RHCAASNA93LHHD12LEUV148
RHCBASNA93LHCGLYV144
RHCBASNA93LHOGLYV144
RHCBASNA93LHCBLEUV148
RHCBASNA93LHCD2LEUV148
RHCBASNA93LHHLEUV148
RHCBASNA93LHHB2LEUV148
RHCBASNA93LHHB3LEUV148
RHCBASNA93LHHD12LEUV148
RHCBASNA93LHHD22LEUV148
RHCGASNA93LHOGLYV144
RHCGASNA93LHCBLEUV148
RHCGASNA93LHCGLEUV148
RHCGASNA93LHCD1LEUV148
RHCGASNA93LHCD2LEUV148
RHCGASNA93LHHB2LEUV148
RHCGASNA93LHHB3LEUV148
RHCGASNA93LHHD12LEUV148
RHCGASNA93LHHD21LEUV148
RHCGASNA93LHHD22LEUV148
RHCGASNA93LHHD23LEUV148
RHND2ASNA93LHOGLYV144
RHND2ASNA93LHHAVALV145
RHND2ASNA93LHCALEUV148
RHND2ASNA93LHCBLEUV148
RHND2ASNA93LHCGLEUV148
RHND2ASNA93LHCD1LEUV148
RHND2ASNA93LHCD2LEUV148
RHND2ASNA93LHHB2LEUV148
RHND2ASNA93LHHB3LEUV148
RHND2ASNA93LHHGLEUV148
RHND2ASNA93LHHD12LEUV148
RHND2ASNA93LHHD21LEUV148
RHND2ASNA93LHHD22LEUV148
RHND2ASNA93LHHD23LEUV148
RHOD1ASNA93LHCBLEUV148
RHOD1ASNA93LHCGLEUV148
RHOD1ASNA93LHCD1LEUV148
RHOD1ASNA93LHCD2LEUV148
RHOD1ASNA93LHHB2LEUV148
RHOD1ASNA93LHHB3LEUV148
RHOD1ASNA93LHHGLEUV148
RHOD1ASNA93LHHD11LEUV148
RHOD1ASNA93LHHD12LEUV148
RHOD1ASNA93LHHD13LEUV148
RHOD1ASNA93LHHD21LEUV148
RHOD1ASNA93LHHD22LEUV148
RHOD1ASNA93LHHD23LEUV148
RHNALAA94LHHA2GLYV144
RHNALAA94LHHA3GLYV144
RHCAALAA94LHHA2GLYV144
RHCBALAA94LHHA2GLYV144
RHCBALAA94LHHA3GLYV144
RHCBALAA97LHHB3TRPV147
RHCD1PHEA100LHHE1PHEV104
RHCE1PHEA100LHHE1PHEV104
RHCZPHEA100LHHE1PHEV100
RHCE1PHEA101LHHE1PHEV104
RHCE2PHEA101LHHE1PHEV104
RHCE2PHEA101LHHZPHEV104
RHCE2PHEA101LHCE3TRPV147
RHCE2PHEA101LHCH2TRPV147
RHCE2PHEA101LHCZ3TRPV147
RHCE2PHEA101LHHH2TRPV147
RHCE2PHEA101LHHZ3TRPV147
RHCZPHEA101LHCE1PHEV104
RHCZPHEA101LHHE1PHEV104
RHCZPHEA101LHCH2TRPV147
RHCZPHEA101LHCZ3TRPV147
RHCZPHEA101LHHH2TRPV147
RHCZPHEA101LHHZ3TRPV147
R-CSERA135L-OHTYRV85
R-CBSERA135L-HE1TYRV85
R-OSERA135L-OHTYRV85
R-OGSERA135L-HE1TYRV85
RHNASNA136L-OHTYRV85
RHNASNA136L-CZTYRV85
RHNASNA136L-HE1TYRV85
RHNASNA136L-HHTYRV85
RHCAASNA136L-CE2TYRV85
RHCAASNA136L-OHTYRV85
RHCAASNA136L-CZTYRV85
RHCAASNA136L-HE2TYRV85
RHCAASNA136L-HHTYRV85
RHCASNA136L-CE1TYRV85
RHCASNA136L-CE2TYRV85
RHCASNA136L-OHTYRV85
RHCASNA136L-CZTYRV85
RHCASNA136L-HE2TYRV85
RHCASNA136L-HHTYRV85
RHCBASNA136L-CE1TYRV85
RHCBASNA136L-CE2TYRV85
RHCBASNA136L-OHTYRV85
RHCBASNA136L-CZTYRV85
RHCBASNA136L-HE1TYRV85
RHCBASNA136L-HE2TYRV85
RHCBASNA136L-HHTYRV85
RHOASNA136L-CE2TYRV85
RHOASNA136L-OHTYRV85
RHOASNA136L-CZTYRV85
RHOASNA136L-HE2TYRV85
RHOASNA136L-HHTYRV85
RHCGASNA136L-OHTYRV85
RHCGASNA136L-CZTYRV85
RHCGASNA136L-HHTYRV85
RHND2ASNA136L-HD13LEUV84
RHND2ASNA136L-OHTYRV85
RHND2ASNA136L-HHTYRV85
RHOD1ASNA136L-OHTYRV85
RHOD1ASNA136L-HHTYRV85
RHNLYSA137L-CD1TYRV85
RHNLYSA137L-CD2TYRV85
RHNLYSA137L-CE1TYRV85
RHNLYSA137L-CE2TYRV85
RHNLYSA137L-OHTYRV85
RHNLYSA137L-CZTYRV85
RHNLYSA137L-HE1TYRV85
RHNLYSA137L-HE2TYRV85
RHNLYSA137L-HHTYRV85
RHCALYSA137L-CGTYRV85
RHCALYSA137L-CD1TYRV85
RHCALYSA137L-CD2TYRV85
RHCALYSA137L-CE1TYRV85
RHCALYSA137L-CE2TYRV85
RHCALYSA137L-OHTYRV85
RHCALYSA137L-CZTYRV85
RHCALYSA137L-HE1TYRV85
RHCALYSA137L-HE2TYRV85
RHCBLYSA137L-CGTYRV85
RHCBLYSA137L-CD1TYRV85
RHCBLYSA137L-CD2TYRV85
RHCBLYSA137L-CE1TYRV85
RHCBLYSA137L-CE2TYRV85
RHCBLYSA137L-CZTYRV85
RHCBLYSA137L-HB3TYRV85
RHCBLYSA137L-HD1TYRV85
RHCBLYSA137L-HE1TYRV85
RHCGLYSA137L-CGTYRV85
RHCGLYSA137L-CD1TYRV85
RHCGLYSA137L-HB3TYRV85
RHCDLYSA137L-CBTYRV85
RHCDLYSA137L-CGTYRV85
RHCDLYSA137L-CD1TYRV85
RHCDLYSA137L-HB3TYRV85
RHCDLYSA137L-HD1TYRV85
RHCDLYSA137L-HGLYV87
RHCDLYSA137L-HA2GLYV87
RHCELYSA137L-HB3TYRV85
RHCELYSA137L-CAGLYV87
RHCELYSA137L-OGLYV87
RHCELYSA137L-HGLYV87
RHCELYSA137L-HA2GLYV87
RHNZLYSA137L-NGLYV87
RHNZLYSA137L-CAGLYV87
RHNZLYSA137L-HGLYV87
RHNZLYSA137L-HA2GLYV87
RHNZLYSA137L-HA3GLYV87
RHCBASNA140LHHB1ALAV81
RHCBASNA140LHHB2ALAV81
RHCGASNA140LHCBALAV81
RHCGASNA140LHHB1ALAV81
RHCGASNA140LHHB2ALAV81
RHCGASNA140L-HE2TYRV85
RHND2ASNA140LHCAALAV81
RHND2ASNA140LHCBALAV81
RHND2ASNA140LHHAALAV81
RHND2ASNA140LHHB1ALAV81
RHND2ASNA140LHHB2ALAV81
RHND2ASNA140L-CE2TYRV85
RHND2ASNA140L-HE2TYRV85
RHOD1ASNA140LHHB2ALAV81
RHCE3TRPA141LHHGCYSV94
RHCH2TRPA141LSCTHRV89
RHCH2TRPA141LSOTHRV89
RHCH2TRPA141LSCAILEV90
RHCH2TRPA141LSHAILEV90
RHCH2TRPA141LSNSERV91
RHCH2TRPA141LSHSERV91
RHCZ2TRPA141LHHZ2LYSV78
RHCZ2TRPA141LHHZ3LYSV78
RHCZ2TRPA141LSCTHRV89
RHCZ2TRPA141LSOTHRV89
RHCZ2TRPA141LSOG1THRV89
RHCZ2TRPA141LSHAILEV90
RHCZ3TRPA141LSHAILEV90
RHCZ3TRPA141LSHSERV91
RHCZ3TRPA141LHHGCYSV94
RHCG2ILEA144LHSGCYSV94
RHCG2ILEA144LHHB3CYSV94
RHCG2ILEA144LHHGCYSV94
RHCD1ILEA144LHHD2LYSV78
RHCH2TRPA147LHHE1PHEV70
RHCGLEUA148LHCBGLUV93
RHCGLEUA148LHHB2GLUV93
RHCGLEUA148LHHB3GLUV93
RHCGLEUA148LHHACYSV94
RHCD1LEUA148LHCGLUV93
RHCD1LEUA148LHCBGLUV93
RHCD1LEUA148LHOGLUV93
RHCD1LEUA148LHHB3GLUV93
RHCD1LEUA148LHNCYSV94
RHCD1LEUA148LHHACYSV94
RHCD1LEUA148LHCBALAV97
RHCD1LEUA148LHHB1ALAV97
RHCD1LEUA148LHHB2ALAV97
RHCD1LEUA148LHHB3ALAV97
RHCD2LEUA148LSHGSERV91
RHCD2LEUA148LHCAGLUV93
RHCD2LEUA148LHCGLUV93
RHCD2LEUA148LHCBGLUV93
RHCD2LEUA148LHOGLUV93
RHCD2LEUA148LHOE2GLUV93
RHCD2LEUA148LHHB2GLUV93
RHCD2LEUA148LHHB3GLUV93
RHCD2LEUA148LHNCYSV94
RHCD2LEUA148LHCACYSV94
RHCD2LEUA148LHSGCYSV94
RHCD2LEUA148LHHCYSV94
RHCD2LEUA148LHHACYSV94
RHCD2LEUA148LHHGCYSV94
RHCD1PHEA151LHHB3ALAV97
RHCE1PHEA151LHHAALAV97
RHCE2PHEA151LHCD1PHEV100
RHCE2PHEA151LHCE1PHEV100
RHCE2PHEA151LHHD1PHEV100
RHCE2PHEA151LHHE1PHEV100
RHCZPHEA151LHCD1PHEV100
RHCZPHEA151LHHD1PHEV100
RHCD1LEUA152LHCDGLUV93
RHCD1LEUA152LHOE2GLUV93
RHCD1LEUA152LHHB3GLUV93
RHCE2PHEA155LHCD2LEUV158
RHCE2PHEA155LHHD21LEUV158
RHCE2PHEA155LHHD22LEUV158
RHCE2PHEA155LHHD23LEUV158
RHCZPHEA155LHCD2LEUV158
RHCZPHEA155LHHD21LEUV158
RHCZPHEA155LHHD23LEUV158
RHCGLEUA162LHHE1PHEV151
RHCD1LEUA162LHCE1PHEV151
RHCD1LEUA162LHCZPHEV151
RHCD1LEUA162LHHE1PHEV151
RHCD1LEUA162LHHZPHEV151
RHCD2LEUA162LHHE1PHEV151

 - Title of columns started by 'R:' means Receptor, 'L:' means Ligand
 - In the Secondary Structure columns: 'H' means that residues/atoms in that row are part of Alpha Helix; 'S' - Beta Sheet


Krembil, Jurisica Lab.   July 16, 2025     Database: 1.0.4.1