Q8NGY1_A6ND48.1 contacts (residues)

ReceptorR: Secondary StructureR: ResidueR; ChainR: Residue numberLigandL: Secondary StructureL: ResidueL: ChainL: Residue Number
RHSERA237LHLYSV235
RHLEUA24LHPHEV305
RHGLYA27LHVALV37
RHGLYA27LHTHRV40
RHVALA271L-ARGV306
RHLEUA28LHLEUV301
RHLEUA28LHPHEV305
RHLEUA28LHTHRV40
RHPHEA282LHLEUV292
RHPHEA282LHGLNV298
RHLEUA283LHGLNV298
RHILEA286LHLEUV292
RHILEA286LHARGV293
RHILEA286LHGLNV298
RHSERA289LHARGV293
RHLEUA290LHLYSV235
RHLEUA290LHSERV239
RHLEUA290LHARGV293
RHARGA291LHLYSV235
RHARGA291LHARGV295
RHLYSA296LHPHEV238
RHLYSA296LHSERV239
RHLYSA296LHALAV242
RHMETA299LHARGV293
RHLEUA30LHSERV33
RHLEUA30LHLEUV36
RHLEUA30LHVALV37
RHTRPA300LHLEUV245
RHTRPA300LHILEV249
RHPHEA303LHTHRV246
RHPHEA303LHILEV249
RHPHEA303LHILEV250
RHVALA304LHILEV249
RHTYRA307LHPHEV211
RHTYRA307LHILEV249
RHTYRA307LHTYRV252
RHTYRA307LHGLYV253
RHLEUA309LHPHEV257
RHLEUA31LHPROV287
RHLEUA31LHILEV288
RHLEUA31LHLEUV292
RHLEUA31LHVALV37
RHLEUA31LHSERV41
R-GLNA310LHGLYV253
R-GLNA310LHCYSV254
R-GLNA310LHSERV256
R-GLNA310LHPHEV257
R-LYSA311LHPHEV257
RHILEA32LHLEUV292
RHLEUA34LHLEUV284
RHLEUA34LHILEV288
RHLEUA34LHLEUV34
RHLEUA34LHVALV37
RHALAA35LHILEV288
RHALAA35LHLEUV292
RHVALA38LHILEV288
RHLEUA42LHARGV293

 - 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





Q8NGY1_A6ND48.1 contacts (residues & atoms)

ReceptorR: Secondary StructureR: AtomR: ResidueR; ChainR: Residue numberLigandL: Secondary StructureL; AtomL: ResidueL: ChainL: Residue Number
RHCGLEUA24LHHE1PHEV305
RHCD2LEUA24LHHE1PHEV305
RHCAGLYA27LHHG21THRV40
RHCGLYA27LHHG21THRV40
RHOGLYA27LHHG22VALV37
RHOGLYA27LHHG21THRV40
RHNLEUA28LHHG21THRV40
RHCBLEUA28LHCZPHEV305
RHCBLEUA28LHHZPHEV305
RHCGLEUA28LHCE2PHEV305
RHCGLEUA28LHCZPHEV305
RHCGLEUA28LHHE2PHEV305
RHCGLEUA28LHHZPHEV305
RHCD1LEUA28LHHD21LEUV301
RHCD1LEUA28LHCE2PHEV305
RHCD1LEUA28LHCZPHEV305
RHCD1LEUA28LHHE2PHEV305
RHCD1LEUA28LHHZPHEV305
RHCD2LEUA28LHCD2PHEV305
RHCD2LEUA28LHCE1PHEV305
RHCD2LEUA28LHCE2PHEV305
RHCD2LEUA28LHCZPHEV305
RHCD2LEUA28LHHE1PHEV305
RHCD2LEUA28LHHE2PHEV305
RHCD2LEUA28LHHZPHEV305
RHCALEUA30LHHG22VALV37
RHCALEUA30LHHG23VALV37
RHCLEUA30LHCG2VALV37
RHCLEUA30LHHG13VALV37
RHCLEUA30LHHG22VALV37
RHCLEUA30LHHG23VALV37
RHCBLEUA30LHCG2VALV37
RHCBLEUA30LHHG21VALV37
RHCBLEUA30LHHG22VALV37
RHCBLEUA30LHHG23VALV37
RHOLEUA30LHHG12VALV37
RHOLEUA30LHHG22VALV37
RHOLEUA30LHHG23VALV37
RHCGLEUA30LHCBVALV37
RHCGLEUA30LHCG2VALV37
RHCGLEUA30LHHG21VALV37
RHCGLEUA30LHHG22VALV37
RHCGLEUA30LHHG23VALV37
RHCD1LEUA30LHHB2SERV33
RHCD1LEUA30LHCG2VALV37
RHCD1LEUA30LHHG21VALV37
RHCD1LEUA30LHHG22VALV37
RHCD1LEUA30LHHG23VALV37
RHCD2LEUA30LHCSERV33
RHCD2LEUA30LHOSERV33
RHCD2LEUA30LHHASERV33
RHCD2LEUA30LHHB2SERV33
RHCD2LEUA30LHHB2LEUV36
RHCD2LEUA30LHNVALV37
RHCD2LEUA30LHCBVALV37
RHCD2LEUA30LHCG2VALV37
RHCD2LEUA30LHHVALV37
RHCD2LEUA30LHHG21VALV37
RHCD2LEUA30LHHG22VALV37
RHCD2LEUA30LHHG23VALV37
RHNLEUA31LHCG2VALV37
RHNLEUA31LHHG12VALV37
RHNLEUA31LHHG13VALV37
RHNLEUA31LHHG22VALV37
RHNLEUA31LHHG23VALV37
RHCALEUA31LHCG1VALV37
RHCALEUA31LHHG12VALV37
RHCALEUA31LHHG13VALV37
RHCALEUA31LHHG22VALV37
RHCLEUA31LHHD12LEUV292
RHCLEUA31LHHD22LEUV292
RHCBLEUA31LHCG1VALV37
RHCBLEUA31LHHG13VALV37
RHCBLEUA31LHOGSERV41
RHOLEUA31LHHG13ILEV288
RHOLEUA31LHCD1LEUV292
RHOLEUA31LHHD12LEUV292
RHOLEUA31LHHD22LEUV292
RHCGLEUA31LHHG13VALV37
RHCGLEUA31LHOGSERV41
RHCGLEUA31LHHGSERV41
RHCGLEUA31LHHD12LEUV292
RHCGLEUA31LHHD22LEUV292
RHCD1LEUA31LHCG1VALV37
RHCD1LEUA31LHHG11VALV37
RHCD1LEUA31LHHG12VALV37
RHCD1LEUA31LHHG13VALV37
RHCD1LEUA31LHCBSERV41
RHCD1LEUA31LHOGSERV41
RHCD1LEUA31LHHB3SERV41
RHCD1LEUA31LHHGSERV41
RHCD1LEUA31LHHB2PROV287
RHCD1LEUA31LHHG12ILEV288
RHCD1LEUA31LHHG13ILEV288
RHCD2LEUA31LHCBSERV41
RHCD2LEUA31LHOGSERV41
RHCD2LEUA31LHHB3SERV41
RHCD2LEUA31LHHGSERV41
RHCD2LEUA31LHHD22LEUV292
RHNILEA32LHHD22LEUV292
RHCAILEA32LHHD22LEUV292
RHCG1ILEA32LHHD22LEUV292
RHCLEUA34LHHD13ILEV288
RHCBLEUA34LHHG12VALV37
RHCBLEUA34LHHD21LEUV284
RHCBLEUA34LHHD11ILEV288
RHCBLEUA34LHHD13ILEV288
RHOLEUA34LHHD13ILEV288
RHCGLEUA34LHHD21LEUV34
RHCGLEUA34LHHG12VALV37
RHCGLEUA34LHHG23VALV37
RHCD1LEUA34LHCD2LEUV34
RHCD1LEUA34LHHALEUV34
RHCD1LEUA34LHHD21LEUV34
RHCD1LEUA34LHHD23LEUV34
RHCD1LEUA34LHCBVALV37
RHCD1LEUA34LHCG1VALV37
RHCD1LEUA34LHCG2VALV37
RHCD1LEUA34LHHBVALV37
RHCD1LEUA34LHHG12VALV37
RHCD1LEUA34LHHG21VALV37
RHCD1LEUA34LHHG22VALV37
RHCD1LEUA34LHHG23VALV37
RHCD1LEUA34LHHD13LEUV284
RHCD1LEUA34LHHD21LEUV284
RHCD2LEUA34LHCD2LEUV34
RHCD2LEUA34LHHD21LEUV34
RHCD2LEUA34LHHD22LEUV34
RHNALAA35LHHG13ILEV288
RHNALAA35LHHD13ILEV288
RHNALAA35LHCD1LEUV292
RHNALAA35LHHD12LEUV292
RHNALAA35LHHD13LEUV292
RHCAALAA35LHHG13ILEV288
RHCAALAA35LHHG22ILEV288
RHCAALAA35LHHD13ILEV288
RHCAALAA35LHCD1LEUV292
RHCAALAA35LHHD11LEUV292
RHCAALAA35LHHD12LEUV292
RHCAALAA35LHHD13LEUV292
RHCALAA35LHHD13LEUV292
RHCBALAA35LHHG13ILEV288
RHCBALAA35LHHG22ILEV288
RHCBALAA35LHCGLEUV292
RHCBALAA35LHCD1LEUV292
RHCBALAA35LHCD2LEUV292
RHCBALAA35LHHB2LEUV292
RHCBALAA35LHHGLEUV292
RHCBALAA35LHHD11LEUV292
RHCBALAA35LHHD12LEUV292
RHCBALAA35LHHD13LEUV292
RHCBALAA35LHHD22LEUV292
RHCBALAA35LHHD23LEUV292
RHCG1VALA38LHHG23ILEV288
RHCG2VALA38LHHD13ILEV288
RHCD2LEUA42LHHH22ARGV293
RHOGSERA237LHHZ3LYSV235
RHCG1VALA271L-HEARGV306
RHCG1VALA271L-HH21ARGV306
RHCD2PHEA282LHHB2LEUV292
RHCD2PHEA282LHHD13LEUV292
RHCD2PHEA282LHHD23LEUV292
RHCE1PHEA282LHOLEUV292
RHCE1PHEA282LHHB2LEUV292
RHCE1PHEA282LHHD23LEUV292
RHCE1PHEA282LHNE2GLNV298
RHCE1PHEA282LHHE21GLNV298
RHCE1PHEA282LHHE22GLNV298
RHCE2PHEA282LHCBLEUV292
RHCE2PHEA282LHCGLEUV292
RHCE2PHEA282LHCD1LEUV292
RHCE2PHEA282LHCD2LEUV292
RHCE2PHEA282LHHALEUV292
RHCE2PHEA282LHHB2LEUV292
RHCE2PHEA282LHHD13LEUV292
RHCE2PHEA282LHHD21LEUV292
RHCE2PHEA282LHHD22LEUV292
RHCE2PHEA282LHHD23LEUV292
RHCZPHEA282LHCALEUV292
RHCZPHEA282LHCLEUV292
RHCZPHEA282LHCBLEUV292
RHCZPHEA282LHOLEUV292
RHCZPHEA282LHCGLEUV292
RHCZPHEA282LHCD2LEUV292
RHCZPHEA282LHHALEUV292
RHCZPHEA282LHHB2LEUV292
RHCZPHEA282LHHD13LEUV292
RHCZPHEA282LHHD21LEUV292
RHCZPHEA282LHHD22LEUV292
RHCZPHEA282LHHD23LEUV292
RHCZPHEA282LHNE2GLNV298
RHCZPHEA282LHHE21GLNV298
RHCZPHEA282LHHE22GLNV298
RHCD2LEUA283LHHE22GLNV298
RHCBILEA286LHHG2ARGV293
RHCG1ILEA286LHHG2ARGV293
RHCG1ILEA286LHHEARGV293
RHCG2ILEA286LHHAARGV293
RHCG2ILEA286LHHG2ARGV293
RHCD1ILEA286LHCLEUV292
RHCD1ILEA286LHOLEUV292
RHCD1ILEA286LHHB2LEUV292
RHCD1ILEA286LHHAARGV293
RHCD1ILEA286LHHG2ARGV293
RHCD1ILEA286LHHE22GLNV298
RHCBSERA289LHHH22ARGV293
RHOGSERA289LHNH2ARGV293
RHOGSERA289LHHH21ARGV293
RHOGSERA289LHHH22ARGV293
RHCLEUA290LHHE3LYSV235
RHCBLEUA290LHOGSERV239
RHCBLEUA290LHHGSERV239
RHOLEUA290LHCELYSV235
RHOLEUA290LHHG3LYSV235
RHOLEUA290LHHE2LYSV235
RHOLEUA290LHHE3LYSV235
RHOLEUA290LHHB2SERV239
RHCGLEUA290LHOGSERV239
RHCGLEUA290LHHGSERV239
RHCD1LEUA290LHOGSERV239
RHCD1LEUA290LHHGSERV239
RHCD2LEUA290LHCBSERV239
RHCD2LEUA290LHOGSERV239
RHCD2LEUA290LHHASERV239
RHCD2LEUA290LHHGSERV239
RHCD2LEUA290LHHD3ARGV293
RHNARGA291LHHE2LYSV235
RHNARGA291LHHE3LYSV235
RHCAARGA291LHCELYSV235
RHCAARGA291LHNZLYSV235
RHCAARGA291LHHE2LYSV235
RHCAARGA291LHHE3LYSV235
RHCAARGA291LHHZ1LYSV235
RHCAARGA291LHHZ3LYSV235
RHCARGA291LHCELYSV235
RHCARGA291LHNZLYSV235
RHCARGA291LHHE3LYSV235
RHCARGA291LHHZ1LYSV235
RHCARGA291LHHZ3LYSV235
RHCBARGA291LHCELYSV235
RHCBARGA291LHNZLYSV235
RHCBARGA291LHHE2LYSV235
RHCBARGA291LHHE3LYSV235
RHCBARGA291LHHZ1LYSV235
RHCBARGA291LHHZ2LYSV235
RHCBARGA291LHHZ3LYSV235
RHOARGA291LHCELYSV235
RHOARGA291LHNZLYSV235
RHOARGA291LHHE3LYSV235
RHOARGA291LHHZ1LYSV235
RHOARGA291LHHZ3LYSV235
RHCGARGA291LHCELYSV235
RHCGARGA291LHNZLYSV235
RHCGARGA291LHHE2LYSV235
RHCGARGA291LHHE3LYSV235
RHCGARGA291LHHZ1LYSV235
RHCGARGA291LHHZ2LYSV235
RHCDARGA291LHCDLYSV235
RHCDARGA291LHCELYSV235
RHCDARGA291LHNZLYSV235
RHCDARGA291LHHD3LYSV235
RHCDARGA291LHHE2LYSV235
RHCDARGA291LHHE3LYSV235
RHCDARGA291LHHZ1LYSV235
RHCDARGA291LHHZ2LYSV235
RHCDARGA291LHHZ3LYSV235
RHNEARGA291LHCELYSV235
RHNEARGA291LHNZLYSV235
RHNEARGA291LHHE2LYSV235
RHNEARGA291LHHZ1LYSV235
RHNEARGA291LHHZ2LYSV235
RHNH1ARGA291LHCDLYSV235
RHNH1ARGA291LHCELYSV235
RHNH1ARGA291LHNZLYSV235
RHNH1ARGA291LHHG2LYSV235
RHNH1ARGA291LHHD3LYSV235
RHNH1ARGA291LHHE2LYSV235
RHNH1ARGA291LHHZ2LYSV235
RHNH2ARGA291LHHH22ARGV295
RHCZARGA291LHCELYSV235
RHCZARGA291LHHD3LYSV235
RHCZARGA291LHHE2LYSV235
RHCZARGA291LHHZ2LYSV235
RHCDLYSA296LHHB3PHEV238
RHCELYSA296LHCBPHEV238
RHCELYSA296LHOPHEV238
RHCELYSA296LHHB3PHEV238
RHCELYSA296LHHD1PHEV238
RHCELYSA296LHHB2ALAV242
RHNZLYSA296LHCAPHEV238
RHNZLYSA296LHCPHEV238
RHNZLYSA296LHCBPHEV238
RHNZLYSA296LHOPHEV238
RHNZLYSA296LHCGPHEV238
RHNZLYSA296LHCD1PHEV238
RHNZLYSA296LHHAPHEV238
RHNZLYSA296LHHB2PHEV238
RHNZLYSA296LHHB3PHEV238
RHNZLYSA296LHHD1PHEV238
RHNZLYSA296LHNSERV239
RHNZLYSA296LHHSERV239
RHNZLYSA296LHHASERV239
RHNZLYSA296LHHB2ALAV242
RHSDMETA299LHHH22ARGV293
RHCE3TRPA300LHHB3LEUV245
RHCE3TRPA300LHHD12LEUV245
RHCE3TRPA300LHCD1ILEV249
RHCE3TRPA300LHHD11ILEV249
RHCE3TRPA300LHHD12ILEV249
RHCH2TRPA300LHCD1LEUV245
RHCH2TRPA300LHHB3LEUV245
RHCH2TRPA300LHHD12LEUV245
RHCH2TRPA300LHHD22LEUV245
RHCH2TRPA300LHHD11ILEV249
RHCZ2TRPA300LHHD12LEUV245
RHCZ2TRPA300LHHD11ILEV249
RHCZ3TRPA300LHCBLEUV245
RHCZ3TRPA300LHCD1LEUV245
RHCZ3TRPA300LHHB3LEUV245
RHCZ3TRPA300LHHD12LEUV245
RHCZ3TRPA300LHHD13LEUV245
RHCZ3TRPA300LHHD22LEUV245
RHCZ3TRPA300LHCD1ILEV249
RHCZ3TRPA300LHHD11ILEV249
RHCZ3TRPA300LHHD12ILEV249
RHCZ3TRPA300LHHD13ILEV249
RHCAPHEA303LHCG2ILEV249
RHCAPHEA303LHHG22ILEV249
RHCAPHEA303LHHD13ILEV249
RHCPHEA303LHCG2ILEV249
RHCPHEA303LHHG22ILEV249
RHCPHEA303LHHG23ILEV249
RHCPHEA303LHHD13ILEV249
RHCBPHEA303LHCG2ILEV249
RHCBPHEA303LHCD1ILEV249
RHCBPHEA303LHHG21ILEV249
RHCBPHEA303LHHG22ILEV249
RHCBPHEA303LHHD12ILEV249
RHCBPHEA303LHHD13ILEV249
RHOPHEA303LHCG2ILEV249
RHOPHEA303LHHG21ILEV249
RHOPHEA303LHHG22ILEV249
RHOPHEA303LHHG23ILEV249
RHCGPHEA303LHHG22ILEV249
RHCGPHEA303LHHD12ILEV249
RHCGPHEA303LHHD13ILEV249
RHCD1PHEA303LHHG23THRV246
RHCD1PHEA303LHHBILEV249
RHCD1PHEA303LHHG21ILEV249
RHCD1PHEA303LHHG22ILEV249
RHCD1PHEA303LHHG13ILEV250
RHCD1PHEA303LHHD11ILEV250
RHCD2PHEA303LHHG23THRV246
RHCE1PHEA303LHCG2THRV246
RHCE1PHEA303LHHG22THRV246
RHCE1PHEA303LHHG23THRV246
RHCE1PHEA303LHCD1ILEV250
RHCE1PHEA303LHHG13ILEV250
RHCE1PHEA303LHHD11ILEV250
RHCE2PHEA303LHCG2THRV246
RHCE2PHEA303LHOG1THRV246
RHCE2PHEA303LHHG23THRV246
RHCZPHEA303LHCG2THRV246
RHCZPHEA303LHHG21THRV246
RHCZPHEA303LHHG22THRV246
RHCZPHEA303LHHG23THRV246
RHCZPHEA303LHHD11ILEV250
RHNVALA304LHHG22ILEV249
RHNVALA304LHHD13ILEV249
RHCATYRA307LHHA3GLYV253
RHCBTYRA307LHCG2ILEV249
RHCBTYRA307LHHG23ILEV249
RHOTYRA307LHHA2GLYV253
RHCGTYRA307LHHG23ILEV249
RHCGTYRA307LHHA2GLYV253
RHCGTYRA307LHHA3GLYV253
RHCD2TYRA307LHOILEV249
RHCD2TYRA307LHHAILEV249
RHCD2TYRA307LHHG23ILEV249
RHCD2TYRA307LHNGLYV253
RHCD2TYRA307LHCAGLYV253
RHCD2TYRA307LHHGLYV253
RHCD2TYRA307LHHA2GLYV253
RHCD2TYRA307LHHA3GLYV253
RHCE2TYRA307LHCTYRV252
RHCE2TYRA307LHCBTYRV252
RHCE2TYRA307LHOTYRV252
RHCE2TYRA307LHHB2TYRV252
RHCE2TYRA307LHHB3TYRV252
RHCE2TYRA307LHNGLYV253
RHCE2TYRA307LHCAGLYV253
RHCE2TYRA307LHHGLYV253
RHCE2TYRA307LHHA2GLYV253
RHCE2TYRA307LHHA3GLYV253
RHOHTYRA307LHCE1PHEV211
RHOHTYRA307LHCE2PHEV211
RHOHTYRA307LHCZPHEV211
RHOHTYRA307LHHB3TYRV252
RHCZTYRA307LHHB3TYRV252
RHCZTYRA307LHHA2GLYV253
RHOLEUA309LHHD2PHEV257
RHOLEUA309LHHE2PHEV257
R-NGLNA310LHHD2PHEV257
R-CAGLNA310LHCBPHEV257
R-CAGLNA310LHCD2PHEV257
R-CAGLNA310LHHB2PHEV257
R-CAGLNA310LHHD2PHEV257
R-CGLNA310LHCAPHEV257
R-CGLNA310LHCBPHEV257
R-CGLNA310LHCD2PHEV257
R-CGLNA310LHHAPHEV257
R-CGLNA310LHHB2PHEV257
R-CGLNA310LHHD2PHEV257
R-CBGLNA310LHCGLYV253
R-CBGLNA310LHOGLYV253
R-CBGLNA310LHCBPHEV257
R-CBGLNA310LHCD2PHEV257
R-CBGLNA310LHHB2PHEV257
R-CBGLNA310LHHB3PHEV257
R-CBGLNA310LHHD2PHEV257
R-OGLNA310LHCSERV256
R-OGLNA310LHHB2SERV256
R-OGLNA310LHNPHEV257
R-OGLNA310LHCAPHEV257
R-OGLNA310LHCBPHEV257
R-OGLNA310LHCGPHEV257
R-OGLNA310LHCD2PHEV257
R-OGLNA310LHHPHEV257
R-OGLNA310LHHAPHEV257
R-OGLNA310LHHB2PHEV257
R-OGLNA310LHHB3PHEV257
R-OGLNA310LHHD2PHEV257
R-CGGLNA310LHOGLYV253
R-CGGLNA310LHHACYSV254
R-CGGLNA310LHCBPHEV257
R-CGGLNA310LHHB2PHEV257
R-CDGLNA310LHCAGLYV253
R-CDGLNA310LHCGLYV253
R-CDGLNA310LHOGLYV253
R-CDGLNA310LHHA3GLYV253
R-CDGLNA310LHNCYSV254
R-CDGLNA310LHCACYSV254
R-CDGLNA310LHSGCYSV254
R-CDGLNA310LHHCYSV254
R-CDGLNA310LHHACYSV254
R-CDGLNA310LHHGCYSV254
R-CDGLNA310LHHB2PHEV257
R-NE2GLNA310LHCGLYV253
R-NE2GLNA310LHNCYSV254
R-NE2GLNA310LHCACYSV254
R-NE2GLNA310LHCBCYSV254
R-NE2GLNA310LHSGCYSV254
R-NE2GLNA310LHHACYSV254
R-NE2GLNA310LHHGCYSV254
R-OE1GLNA310LHCAGLYV253
R-OE1GLNA310LHCGLYV253
R-OE1GLNA310LHOGLYV253
R-OE1GLNA310LHHA2GLYV253
R-OE1GLNA310LHHA3GLYV253
R-OE1GLNA310LHNCYSV254
R-OE1GLNA310LHCACYSV254
R-OE1GLNA310LHSGCYSV254
R-OE1GLNA310LHHCYSV254
R-OE1GLNA310LHHACYSV254
R-OE1GLNA310LHHGCYSV254
R-NLYSA311LHHD2PHEV257

 - 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