Q8NGN4_Q8WZ94.1 contacts (residues)

ReceptorR: Secondary StructureR: ResidueR; ChainR: Residue numberLigandL: Secondary StructureL: ResidueL: ChainL: Residue Number
RHPHEA102LHPHEV277
RHGLYA137L-PROV262
RHSERA138LHSERV264
RHALAA141L-PROV262
RHALAA141LHSERV264
RHALAA141LHSERV265
RHLEUA142LHSERV265
RHTHRA145LHSERV265
RHTHRA145L-TYRV266
RHTHRA145LHGLNV270
RHTRPA148LHPHEV257
RHTRPA148L-METV261
RHLEUA149LHGLNV270
RHPHEA26LHHISV235
RHLEUA30LHPHEV238
RHLEUA30LHTHRV242
RHVALA305LHILEV216
RHVALA31LHARGV234
RHVALA31LHPHEV238
RHTYRA33LHTHRV242
RHTYRA33LHLEUV245
RHTYRA33LHTHRV246
RHVALA34LHLEUV222
RHVALA34LHPHEV238
RHVALA34LHLEUV245
RHLEUA35LHLEUV222
RHLEUA35LHLEUV226
RHVALA37LHLEUV245
RHVALA37LHTHRV249
RHLEUA38LHTYRV218
RHLEUA38LHILEV219
RHLEUA38LHLEUV222
RHLEUA38LHLEUV245
RHLEUA41LHVALV211
RHLEUA41LHILEV214
RHLEUA41LHALAV215
RHLEUA42LHILEV219
RHLEUA44LHTHRV256
RHLEUA45LHVALV211
RHLEUA45LHCYSV212
RHLEUA45LHALAV215
RHARGA48LHVALV208
RHARGA48L-VALV260
RHTYRA59L-METV261
RHTYRA59L-PROV262
RHTYRA59LHSERV265
RHTHRA62L-VALV260
RHASNA63L-METV261
RHPHEA66LHTYRV252
RHPHEA66LHGLYV253
RHPHEA66LHTHRV254
RHPHEA66LHTHRV256
RHPHEA66LHPHEV257
RHMETA69LHTHRV249
RHTRPA70LHTHRV249
RHTRPA70LHLEUV250
RHTHRA73LHTHRV246
RHTHRA73LHTHRV249
RHTHRA73LHLEUV250
RHPROA77LHARGV293
RHLYSA78LHARGV293
RHLEUA80LHTHRV242
RHMETA81LHARGV293

 - 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





Q8NGN4_Q8WZ94.1 contacts (residues & atoms)

ReceptorR: Secondary StructureR: AtomR: ResidueR; ChainR: Residue numberLigandL: Secondary StructureL; AtomL: ResidueL: ChainL: Residue Number
RHCBPHEA26LHHE2HISV235
RHCGPHEA26LHNE2HISV235
RHCGPHEA26LHHE2HISV235
RHCD1PHEA26LHCD2HISV235
RHCD1PHEA26LHCE1HISV235
RHCD1PHEA26LHNE2HISV235
RHCD1PHEA26LHHD2HISV235
RHCD1PHEA26LHHE2HISV235
RHCD2PHEA26LHHE2HISV235
RHCE1PHEA26LHCGHISV235
RHCE1PHEA26LHCD2HISV235
RHCE1PHEA26LHND1HISV235
RHCE1PHEA26LHCE1HISV235
RHCE1PHEA26LHNE2HISV235
RHCE1PHEA26LHHD2HISV235
RHCE1PHEA26LHHE1HISV235
RHCE1PHEA26LHHE2HISV235
RHCE2PHEA26LHHE2HISV235
RHCZPHEA26LHCE1HISV235
RHCZPHEA26LHNE2HISV235
RHCZPHEA26LHHE1HISV235
RHCZPHEA26LHHE2HISV235
RHCBLEUA30LHHB3PHEV238
RHCGLEUA30LHCBPHEV238
RHCGLEUA30LHCGPHEV238
RHCGLEUA30LHCD1PHEV238
RHCGLEUA30LHHB2PHEV238
RHCGLEUA30LHHB3PHEV238
RHCGLEUA30LHHD1PHEV238
RHCD1LEUA30LHCBPHEV238
RHCD1LEUA30LHHB3PHEV238
RHCD1LEUA30LHHD1PHEV238
RHCD1LEUA30LHOG1THRV242
RHCD1LEUA30LHHG1THRV242
RHCD2LEUA30LHCAPHEV238
RHCD2LEUA30LHCPHEV238
RHCD2LEUA30LHCBPHEV238
RHCD2LEUA30LHCGPHEV238
RHCD2LEUA30LHCD1PHEV238
RHCD2LEUA30LHCD2PHEV238
RHCD2LEUA30LHHB2PHEV238
RHCD2LEUA30LHHB3PHEV238
RHCD2LEUA30LHHD1PHEV238
RHCD2LEUA30LHHD2PHEV238
RHCG2VALA31LHNH2ARGV234
RHCG2VALA31LHHH21ARGV234
RHCG2VALA31LHCE2PHEV238
RHCG2VALA31LHCZPHEV238
RHCG2VALA31LHHE2PHEV238
RHCG2VALA31LHHZPHEV238
RHCD1TYRA33LHHG21THRV242
RHCE1TYRA33LHCG2THRV242
RHCE1TYRA33LHHATHRV242
RHCE1TYRA33LHHG21THRV242
RHCE1TYRA33LHHB2LEUV245
RHCE1TYRA33LHHB3LEUV245
RHOHTYRA33LHCLEUV245
RHOHTYRA33LHHB2LEUV245
RHOHTYRA33LHHB3LEUV245
RHOHTYRA33LHNTHRV246
RHOHTYRA33LHCATHRV246
RHOHTYRA33LHOG1THRV246
RHOHTYRA33LHHTHRV246
RHOHTYRA33LHHATHRV246
RHOHTYRA33LHHG1THRV246
RHCZTYRA33LHHG21THRV242
RHCZTYRA33LHHB3LEUV245
RHCBVALA34LHHD12LEUV222
RHCBVALA34LHCE1PHEV238
RHCBVALA34LHHD1PHEV238
RHCBVALA34LHHE1PHEV238
RHOVALA34LHHD23LEUV222
RHCG1VALA34LHCD1LEUV222
RHCG1VALA34LHHB2LEUV222
RHCG1VALA34LHHD12LEUV222
RHCG1VALA34LHHD23LEUV222
RHCG1VALA34LHCE1PHEV238
RHCG1VALA34LHHE1PHEV238
RHCG2VALA34LHCD1PHEV238
RHCG2VALA34LHCE1PHEV238
RHCG2VALA34LHHD1PHEV238
RHCG2VALA34LHHE1PHEV238
RHCG2VALA34LHHD11LEUV245
RHCG2VALA34LHHD13LEUV245
RHCGLEUA35LHHD13LEUV222
RHCGLEUA35LHHD22LEUV222
RHCD2LEUA35LHCGLEUV222
RHCD2LEUA35LHCD1LEUV222
RHCD2LEUA35LHCD2LEUV222
RHCD2LEUA35LHHD13LEUV222
RHCD2LEUA35LHHD21LEUV222
RHCD2LEUA35LHHD22LEUV222
RHCD2LEUA35LHHD23LEUV222
RHCD2LEUA35LHHD13LEUV226
RHCBVALA37LHHD23LEUV245
RHCG1VALA37LHHB3LEUV245
RHCG1VALA37LHHD23LEUV245
RHCG1VALA37LHOG1THRV249
RHCG1VALA37LHHG1THRV249
RHCBLEUA38LHHD23LEUV222
RHCGLEUA38LHHB3TYRV218
RHCGLEUA38LHHD23LEUV222
RHCD1LEUA38LHCTYRV218
RHCD1LEUA38LHOTYRV218
RHCD1LEUA38LHHB3TYRV218
RHCD1LEUA38LHHAILEV219
RHCD1LEUA38LHCBLEUV222
RHCD1LEUA38LHCGLEUV222
RHCD1LEUA38LHCD2LEUV222
RHCD1LEUA38LHHB2LEUV222
RHCD1LEUA38LHHB3LEUV222
RHCD1LEUA38LHHD12LEUV222
RHCD1LEUA38LHHD21LEUV222
RHCD1LEUA38LHHD23LEUV222
RHCD2LEUA38LHCATYRV218
RHCD2LEUA38LHCTYRV218
RHCD2LEUA38LHCBTYRV218
RHCD2LEUA38LHCGTYRV218
RHCD2LEUA38LHHB2TYRV218
RHCD2LEUA38LHHB3TYRV218
RHCD2LEUA38LHHG12ILEV219
RHCD2LEUA38LHHD22LEUV245
RHCGLEUA41LHHG13VALV211
RHCGLEUA41LHCBALAV215
RHCGLEUA41LHHAALAV215
RHCGLEUA41LHHB1ALAV215
RHCGLEUA41LHHB2ALAV215
RHCD1LEUA41LHCG1VALV211
RHCD1LEUA41LHHG11VALV211
RHCD1LEUA41LHHG12VALV211
RHCD1LEUA41LHHG13VALV211
RHCD1LEUA41LHHB2ALAV215
RHCD2LEUA41LHHG13VALV211
RHCD2LEUA41LHHG21ILEV214
RHCD2LEUA41LHNALAV215
RHCD2LEUA41LHCAALAV215
RHCD2LEUA41LHCBALAV215
RHCD2LEUA41LHHAALAV215
RHCD2LEUA41LHHB1ALAV215
RHCD2LEUA41LHHB2ALAV215
RHCBLEUA42LHHD11ILEV219
RHCD1LEUA42LHHD11ILEV219
RHCD1LEUA44LHHG21THRV256
RHCGLEUA45LHCG1VALV211
RHCGLEUA45LHHG11VALV211
RHCGLEUA45LHHG12VALV211
RHCGLEUA45LHHACYSV212
RHCGLEUA45LHHB2ALAV215
RHCGLEUA45LHHB3ALAV215
RHCD1LEUA45LHOVALV211
RHCD1LEUA45LHHG11VALV211
RHCD1LEUA45LHHACYSV212
RHCD1LEUA45LHCBALAV215
RHCD1LEUA45LHHB1ALAV215
RHCD1LEUA45LHHB2ALAV215
RHCD1LEUA45LHHB3ALAV215
RHCD2LEUA45LHCVALV211
RHCD2LEUA45LHCBVALV211
RHCD2LEUA45LHCG1VALV211
RHCD2LEUA45LHHBVALV211
RHCD2LEUA45LHHG11VALV211
RHCD2LEUA45LHHG12VALV211
RHCD2LEUA45LHHG13VALV211
RHCD2LEUA45LHNCYSV212
RHCD2LEUA45LHCACYSV212
RHCD2LEUA45LHSGCYSV212
RHCD2LEUA45LHHCYSV212
RHCD2LEUA45LHHACYSV212
RHCD2LEUA45LHHGCYSV212
RHCBARGA48LHHG22VALV208
RHCGARGA48LHCG2VALV208
RHCGARGA48LHHG22VALV208
RHCGARGA48LHHG23VALV208
RHNEARGA48L-HG23VALV260
RHCD2TYRA59L-HD2PROV262
RHCE1TYRA59L-HG2PROV262
RHCE2TYRA59L-HAMETV261
RHCE2TYRA59L-CGPROV262
RHCE2TYRA59L-CDPROV262
RHCE2TYRA59L-HG2PROV262
RHCE2TYRA59L-HG3PROV262
RHCE2TYRA59L-HD2PROV262
RHCE2TYRA59L-HD3PROV262
RHOHTYRA59L-HAMETV261
RHOHTYRA59L-HB3METV261
RHOHTYRA59L-HG2METV261
RHOHTYRA59L-NPROV262
RHOHTYRA59L-CGPROV262
RHOHTYRA59L-CDPROV262
RHOHTYRA59L-HG2PROV262
RHOHTYRA59L-HG3PROV262
RHOHTYRA59L-HD2PROV262
RHOHTYRA59L-HD3PROV262
RHOHTYRA59LHCBSERV265
RHOHTYRA59LHOGSERV265
RHOHTYRA59LHHB2SERV265
RHOHTYRA59LHHB3SERV265
RHOHTYRA59LHHGSERV265
RHCZTYRA59L-HAMETV261
RHCZTYRA59L-CGPROV262
RHCZTYRA59L-CDPROV262
RHCZTYRA59L-HG2PROV262
RHCZTYRA59L-HG3PROV262
RHCZTYRA59L-HD2PROV262
RHCZTYRA59L-HD3PROV262
RHCZTYRA59LHHGSERV265
RHCG2THRA62L-CG1VALV260
RHCG2THRA62L-HG11VALV260
RHCG2THRA62L-HG12VALV260
RHND2ASNA63L-HG2METV261
RHOD1ASNA63L-CGMETV261
RHOD1ASNA63L-SDMETV261
RHOD1ASNA63L-HG2METV261
RHCGPHEA66LHOGLYV253
RHCGPHEA66LHHA2GLYV253
RHCD1PHEA66LHOGLYV253
RHCD1PHEA66LHHB2PHEV257
RHCD1PHEA66LHHD2PHEV257
RHCD2PHEA66LHCAGLYV253
RHCD2PHEA66LHCGLYV253
RHCD2PHEA66LHOGLYV253
RHCD2PHEA66LHHA2GLYV253
RHCD2PHEA66LHHA3GLYV253
RHCD2PHEA66LHHBTHRV256
RHCD2PHEA66LHHG21THRV256
RHCE1PHEA66LHCGLYV253
RHCE1PHEA66LHOGLYV253
RHCE1PHEA66LHHA2GLYV253
RHCE1PHEA66LHCBPHEV257
RHCE1PHEA66LHHB2PHEV257
RHCE1PHEA66LHHD2PHEV257
RHCE2PHEA66LHOTYRV252
RHCE2PHEA66LHNGLYV253
RHCE2PHEA66LHCAGLYV253
RHCE2PHEA66LHCGLYV253
RHCE2PHEA66LHOGLYV253
RHCE2PHEA66LHHA2GLYV253
RHCE2PHEA66LHHA3GLYV253
RHCE2PHEA66LHNTHRV254
RHCE2PHEA66LHHBTHRV256
RHCE2PHEA66LHHPHEV257
RHCE2PHEA66LHHB2PHEV257
RHCZPHEA66LHCAGLYV253
RHCZPHEA66LHCGLYV253
RHCZPHEA66LHOGLYV253
RHCZPHEA66LHHA2GLYV253
RHCZPHEA66LHHA3GLYV253
RHCZPHEA66LHNTHRV254
RHCZPHEA66LHHATHRV254
RHCZPHEA66LHHPHEV257
RHCZPHEA66LHHB2PHEV257
RHCAMETA69LHHG21THRV249
RHCAMETA69LHHG22THRV249
RHCMETA69LHCG2THRV249
RHCMETA69LHHG21THRV249
RHCMETA69LHHG22THRV249
RHCMETA69LHHG23THRV249
RHCBMETA69LHCG2THRV249
RHCBMETA69LHHG21THRV249
RHCBMETA69LHHG22THRV249
RHOMETA69LHCG2THRV249
RHOMETA69LHHG21THRV249
RHOMETA69LHHG22THRV249
RHOMETA69LHHG23THRV249
RHCEMETA69LHHATHRV249
RHCEMETA69LHHG22THRV249
RHCATRPA70LHHG23THRV249
RHCD1TRPA70LHHD21LEUV250
RHNE1TRPA70LHHD21LEUV250
RHCBTHRA73LHCG2THRV249
RHCBTHRA73LHHBTHRV249
RHCBTHRA73LHHG21THRV249
RHCBTHRA73LHHG23THRV249
RHCG2THRA73LHCG2THRV246
RHCG2THRA73LHHATHRV246
RHCG2THRA73LHHG23THRV246
RHCG2THRA73LHHBTHRV249
RHCG2THRA73LHHG21THRV249
RHCG2THRA73LHHG23THRV249
RHCG2THRA73LHHGLEUV250
RHCG2THRA73LHHD22LEUV250
RHOG1THRA73LHCBTHRV249
RHOG1THRA73LHCG2THRV249
RHOG1THRA73LHOG1THRV249
RHOG1THRA73LHHBTHRV249
RHOG1THRA73LHHG21THRV249
RHOG1THRA73LHHG22THRV249
RHOG1THRA73LHHG23THRV249
RHNPROA77LHHH22ARGV293
RHCAPROA77LHNH1ARGV293
RHCAPROA77LHNH2ARGV293
RHCAPROA77LHCZARGV293
RHCAPROA77LHHH12ARGV293
RHCAPROA77LHHH21ARGV293
RHCAPROA77LHHH22ARGV293
RHCPROA77LHNH2ARGV293
RHCPROA77LHHH21ARGV293
RHCPROA77LHHH22ARGV293
RHCBPROA77LHNH1ARGV293
RHCBPROA77LHNH2ARGV293
RHCBPROA77LHCZARGV293
RHCBPROA77LHHH12ARGV293
RHCBPROA77LHHH21ARGV293
RHCBPROA77LHHH22ARGV293
RHOPROA77LHNH2ARGV293
RHOPROA77LHCZARGV293
RHOPROA77LHHH12ARGV293
RHOPROA77LHHH21ARGV293
RHOPROA77LHHH22ARGV293
RHCGPROA77LHHH12ARGV293
RHCGPROA77LHHH22ARGV293
RHNLYSA78LHNH2ARGV293
RHNLYSA78LHHH21ARGV293
RHNLYSA78LHHH22ARGV293
RHCD1LEUA80LHHG23THRV242
RHCGMETA81LHNEARGV293
RHCGMETA81LHNH2ARGV293
RHCGMETA81LHCZARGV293
RHCGMETA81LHHEARGV293
RHCGMETA81LHHH21ARGV293
RHSDMETA81LHNEARGV293
RHSDMETA81LHNH2ARGV293
RHSDMETA81LHHEARGV293
RHSDMETA81LHHH21ARGV293
RHCEMETA81LHNH2ARGV293
RHCEMETA81LHHEARGV293
RHCEMETA81LHHH21ARGV293
RHCEMETA81LHHH22ARGV293
RHCE1PHEA102LHHZPHEV277
RHCE2PHEA102LHCE1PHEV277
RHCE2PHEA102LHHE1PHEV277
RHCE2PHEA102LHHZPHEV277
RHCZPHEA102LHCE1PHEV277
RHCZPHEA102LHCZPHEV277
RHCZPHEA102LHHE1PHEV277
RHCZPHEA102LHHZPHEV277
RHOGLYA137L-HG2PROV262
RHCASERA138LHHGSERV264
RHNALAA141L-HG2PROV262
RHNALAA141LHOGSERV265
RHNALAA141LHHGSERV265
RHCAALAA141L-HG2PROV262
RHCAALAA141L-HD3PROV262
RHCAALAA141LHCBSERV265
RHCAALAA141LHOGSERV265
RHCAALAA141LHHASERV265
RHCAALAA141LHHB3SERV265
RHCAALAA141LHHGSERV265
RHCALAA141LHCASERV265
RHCALAA141LHCBSERV265
RHCALAA141LHOGSERV265
RHCALAA141LHHASERV265
RHCALAA141LHHB3SERV265
RHCALAA141LHHGSERV265
RHCBALAA141L-CBPROV262
RHCBALAA141L-CGPROV262
RHCBALAA141L-HB2PROV262
RHCBALAA141L-HB3PROV262
RHCBALAA141L-HG2PROV262
RHCBALAA141L-HD3PROV262
RHCBALAA141LHOGSERV264
RHCBALAA141LHHGSERV264
RHCBALAA141LHNSERV265
RHCBALAA141LHCASERV265
RHCBALAA141LHCBSERV265
RHCBALAA141LHOGSERV265
RHCBALAA141LHHSERV265
RHCBALAA141LHHASERV265
RHCBALAA141LHHB2SERV265
RHCBALAA141LHHB3SERV265
RHCBALAA141LHHGSERV265
RHOALAA141LHCASERV265
RHOALAA141LHCBSERV265
RHOALAA141LHOSERV265
RHOALAA141LHOGSERV265
RHOALAA141LHHASERV265
RHOALAA141LHHB2SERV265
RHOALAA141LHHB3SERV265
RHOALAA141LHHGSERV265
RHNLEUA142LHOGSERV265
RHNLEUA142LHHASERV265
RHNTHRA145LHOSERV265
RHNTHRA145LHHB3SERV265
RHCATHRA145LHOSERV265
RHCATHRA145LHHB3SERV265
RHCBTHRA145LHCASERV265
RHCBTHRA145LHCSERV265
RHCBTHRA145LHCBSERV265
RHCBTHRA145LHOSERV265
RHCBTHRA145LHHASERV265
RHCBTHRA145LHHB3SERV265
RHCBTHRA145L-HATYRV266
RHOTHRA145LHHE22GLNV270
RHCG2THRA145LHCSERV265
RHCG2THRA145LHOSERV265
RHCG2THRA145LHHASERV265
RHCG2THRA145L-NTYRV266
RHCG2THRA145L-CATYRV266
RHCG2THRA145L-HATYRV266
RHCG2THRA145LHOE1GLNV270
RHCG2THRA145LHHE22GLNV270
RHOG1THRA145LHNSERV265
RHOG1THRA145LHCASERV265
RHOG1THRA145LHCSERV265
RHOG1THRA145LHCBSERV265
RHOG1THRA145LHOSERV265
RHOG1THRA145LHOGSERV265
RHOG1THRA145LHHASERV265
RHOG1THRA145LHHB2SERV265
RHOG1THRA145LHHB3SERV265
RHOG1THRA145L-NTYRV266
RHOG1THRA145L-HATYRV266
RHCBTRPA148LHHE2PHEV257
RHCBTRPA148LHHZPHEV257
RHCGTRPA148LHCE2PHEV257
RHCGTRPA148LHHE2PHEV257
RHCGTRPA148LHHZPHEV257
RHCGTRPA148L-HE3METV261
RHCD1TRPA148LHCE2PHEV257
RHCD1TRPA148LHHE2PHEV257
RHCD1TRPA148L-SDMETV261
RHCD1TRPA148L-HE3METV261
RHCD2TRPA148LHCE2PHEV257
RHCD2TRPA148LHCZPHEV257
RHCD2TRPA148LHHE2PHEV257
RHCD2TRPA148LHHZPHEV257
RHCE2TRPA148LHCD2PHEV257
RHCE2TRPA148LHCE2PHEV257
RHCE2TRPA148LHHD2PHEV257
RHCE2TRPA148LHHE2PHEV257
RHCE3TRPA148LHCE2PHEV257
RHCE3TRPA148LHHE2PHEV257
RHCE3TRPA148LHHZPHEV257
RHNE1TRPA148LHCE2PHEV257
RHNE1TRPA148LHHE2PHEV257
RHNE1TRPA148L-SDMETV261
RHNE1TRPA148L-HE3METV261
RHCH2TRPA148LHCD2PHEV257
RHCH2TRPA148LHCE2PHEV257
RHCH2TRPA148LHHD2PHEV257
RHCH2TRPA148LHHE2PHEV257
RHCZ2TRPA148LHCD2PHEV257
RHCZ2TRPA148LHCE2PHEV257
RHCZ2TRPA148LHHD2PHEV257
RHCZ2TRPA148LHHE2PHEV257
RHCZ3TRPA148LHCE2PHEV257
RHCZ3TRPA148LHHD2PHEV257
RHCZ3TRPA148LHHE2PHEV257
RHCGLEUA149LHNE2GLNV270
RHCGLEUA149LHHE21GLNV270
RHCGLEUA149LHHE22GLNV270
RHCD1LEUA149LHHE22GLNV270
RHCD2LEUA149LHCDGLNV270
RHCD2LEUA149LHNE2GLNV270
RHCD2LEUA149LHOE1GLNV270
RHCD2LEUA149LHHG3GLNV270
RHCD2LEUA149LHHE21GLNV270
RHCD2LEUA149LHHE22GLNV270
RHCBVALA305LHHD11ILEV216
RHCBVALA305LHHD12ILEV216
RHCG1VALA305LHCD1ILEV216
RHCG1VALA305LHHG22ILEV216
RHCG1VALA305LHHD11ILEV216
RHCG1VALA305LHHD12ILEV216
RHCG2VALA305LHCD1ILEV216
RHCG2VALA305LHHG12ILEV216
RHCG2VALA305LHHD11ILEV216
RHCG2VALA305LHHD12ILEV216
RHCG2VALA305LHHD13ILEV216

 - 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