Q8NGF4_Q8NGZ5.22 contacts (residues)

ReceptorR: Secondary StructureR: ResidueR; ChainR: Residue numberLigandL: Secondary StructureL: ResidueL: ChainL: Residue Number
RHILEA211LHVALV89
RHILEA211L-ALAV93
RHVALA214LHVALV89
RHLEUA218LHLYSV86
RHVALA219LSSERV99
RHGLYA222LHHISV101
RHGLYA222LHGLYV102
RHGLYA222LHALAV105
RHTYRA223LHHISV101
RHALAA225LHALAV105
RHALAA225LHPHEV109
RHLEUA229LHTYRV108
RHARGA237LHLEUV156
RHPHEA241LHTYRV108
RHPHEA241LHPHEV109
RHPHEA245LHPHEV113
RHPHEA245LHPHEV74
RHPHEA245LHALAV77
RHPHEA245LHSERV78
RHPHEA245LHSERV81
RHTHRA249LHLEUV49
RHTHRA249LHSERV81
RHTHRA252LHTYRV41
RHTHRA252LHSERV81
RHTHRA252LHPROV85
RHILEA253LHTYRV41
RHILEA253LHMETV45
RHGLYA256LHPHEV34
RHGLYA256LHLEUV38
RHTHRA257LHLEUV38
RHTHRA257LHMETV42
RHILEA259LHPHEV34
RHILEA259LHVALV89
RHILEA259LHMETV92
RHPHEA260LHPHEV34
RHPHEA260LHALAV35
RHPHEA260LHLEUV38
RHMETA261LHPHEV34
RHLEUA263LHMETV92
R-GLNA264LHGLYV31
R-GLNA264LHPHEV34
R-GLNA264LHALAV35
R-GLNA264LHMETV92
R-PROA265LHGLYV31
R-PROA265LHMETV92
RHSERA268LHGLYV31
RHGLNA273LHALAV35
RHGLNA273LHLEUV39
RHVALA277LHLEUV38
RHPHEA280LHMETV42
R-LEUA312LHLYSV313
RHVALA32LHHISV314
RHVALA32LHILEV315
RHILEA36LHHISV314

 - 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





Q8NGF4_Q8NGZ5.22 contacts (residues & atoms)

ReceptorR: Secondary StructureR: AtomR: ResidueR; ChainR: Residue numberLigandL: Secondary StructureL; AtomL: ResidueL: ChainL: Residue Number
RHCG1VALA32LHOHISV314
RHCG1VALA32LHHAILEV315
RHCG2ILEA36LHHE1HISV314
RHCD1ILEA36LHND1HISV314
RHCG1ILEA211LHHG12VALV89
RHCG1ILEA211L-HB2ALAV93
RHCG2ILEA211LHHG12VALV89
RHCG2ILEA211L-HB1ALAV93
RHCG2ILEA211L-HB2ALAV93
RHCD1ILEA211LHCG1VALV89
RHCD1ILEA211LHHG12VALV89
RHCD1ILEA211LHHG13VALV89
RHCD1ILEA211LHHG22VALV89
RHCD1ILEA211L-HB2ALAV93
RHCG1VALA214LHHG13VALV89
RHCG1VALA214LHHG23VALV89
RHCD1LEUA218LHHD3LYSV86
RHCBVALA219LSHGSERV99
RHCG1VALA219LSHGSERV99
RHCG2VALA219LSOGSERV99
RHCG2VALA219LSHB3SERV99
RHCG2VALA219LSHGSERV99
RHCAGLYA222LHHA2GLYV102
RHCAGLYA222LHCBALAV105
RHCAGLYA222LHHB1ALAV105
RHCAGLYA222LHHB2ALAV105
RHCAGLYA222LHHB3ALAV105
RHCGLYA222LHHB3HISV101
RHCGLYA222LHHB3ALAV105
RHOGLYA222LHHB3HISV101
RHOGLYA222LHHB3ALAV105
RHCD1TYRA223LHCD2HISV101
RHCD1TYRA223LHHD2HISV101
RHCE1TYRA223LHCGHISV101
RHCE1TYRA223LHCD2HISV101
RHCE1TYRA223LHNE2HISV101
RHCE1TYRA223LHHB2HISV101
RHCE1TYRA223LHHD2HISV101
RHCE1TYRA223LHHE2HISV101
RHCE2TYRA223LHHD2HISV101
RHOHTYRA223LHCD2HISV101
RHOHTYRA223LHHD2HISV101
RHCZTYRA223LHCD2HISV101
RHCZTYRA223LHHB2HISV101
RHCZTYRA223LHHD2HISV101
RHCAALAA225LHHE2PHEV109
RHCAALAA225LHHZPHEV109
RHCBALAA225LHHB1ALAV105
RHCBALAA225LHHB3ALAV105
RHCBALAA225LHCE2PHEV109
RHCBALAA225LHCZPHEV109
RHCBALAA225LHHE2PHEV109
RHCBALAA225LHHZPHEV109
RHCGLEUA229LHCE1TYRV108
RHCGLEUA229LHCZTYRV108
RHCGLEUA229LHHE1TYRV108
RHCD1LEUA229LHCGTYRV108
RHCD1LEUA229LHCD1TYRV108
RHCD1LEUA229LHCD2TYRV108
RHCD1LEUA229LHCE1TYRV108
RHCD1LEUA229LHCZTYRV108
RHCD1LEUA229LHHD1TYRV108
RHCD2LEUA229LHCD1TYRV108
RHCD2LEUA229LHCD2TYRV108
RHCD2LEUA229LHCE1TYRV108
RHCD2LEUA229LHCE2TYRV108
RHCD2LEUA229LHOHTYRV108
RHCD2LEUA229LHCZTYRV108
RHCD2LEUA229LHHE1TYRV108
RHCD2LEUA229LHHE2TYRV108
RHCD2LEUA229LHHHTYRV108
RHNH2ARGA237LHHD21LEUV156
RHCBPHEA241LHHE1PHEV109
RHCGPHEA241LHHE1PHEV109
RHCD1PHEA241LHHE1TYRV108
RHCD1PHEA241LHCD1PHEV109
RHCD1PHEA241LHCE1PHEV109
RHCD1PHEA241LHCZPHEV109
RHCD1PHEA241LHHE1PHEV109
RHCD1PHEA241LHHZPHEV109
RHCD2PHEA241LHHE1PHEV109
RHCE1PHEA241LHCE1TYRV108
RHCE1PHEA241LHHE1TYRV108
RHCE1PHEA241LHCD1PHEV109
RHCE1PHEA241LHCE1PHEV109
RHCE1PHEA241LHCE2PHEV109
RHCE1PHEA241LHCZPHEV109
RHCE1PHEA241LHHD1PHEV109
RHCE1PHEA241LHHE1PHEV109
RHCE1PHEA241LHHZPHEV109
RHCE2PHEA241LHOHTYRV108
RHCE2PHEA241LHHE1TYRV108
RHCE2PHEA241LHHE1PHEV109
RHCZPHEA241LHCE1TYRV108
RHCZPHEA241LHOHTYRV108
RHCZPHEA241LHCZTYRV108
RHCZPHEA241LHHE1TYRV108
RHCZPHEA241LHCE1PHEV109
RHCZPHEA241LHCZPHEV109
RHCZPHEA241LHHE1PHEV109
RHCZPHEA241LHHZPHEV109
RHCBPHEA245LHHZPHEV74
RHCGPHEA245LHHE2PHEV74
RHCGPHEA245LHHZPHEV74
RHCGPHEA245LHOGSERV78
RHCD1PHEA245LHCE2PHEV74
RHCD1PHEA245LHCZPHEV74
RHCD1PHEA245LHHE2PHEV74
RHCD1PHEA245LHHZPHEV74
RHCD1PHEA245LHOGSERV78
RHCD2PHEA245LHCASERV78
RHCD2PHEA245LHCBSERV78
RHCD2PHEA245LHOGSERV78
RHCD2PHEA245LHHASERV78
RHCD2PHEA245LHHB3SERV78
RHCD2PHEA245LHHGSERV78
RHCD2PHEA245LHHZPHEV113
RHCE1PHEA245LHCD2PHEV74
RHCE1PHEA245LHCE2PHEV74
RHCE1PHEA245LHHD2PHEV74
RHCE1PHEA245LHHE2PHEV74
RHCE1PHEA245LHOGSERV78
RHCE1PHEA245LHHASERV78
RHCE1PHEA245LHHGSERV78
RHCE2PHEA245LHNSERV78
RHCE2PHEA245LHCASERV78
RHCE2PHEA245LHCSERV78
RHCE2PHEA245LHCBSERV78
RHCE2PHEA245LHOSERV78
RHCE2PHEA245LHOGSERV78
RHCE2PHEA245LHHASERV78
RHCE2PHEA245LHHB2SERV78
RHCE2PHEA245LHHB3SERV78
RHCE2PHEA245LHHGSERV78
RHCE2PHEA245LHHB3SERV81
RHCZPHEA245LHOPHEV74
RHCZPHEA245LHCE2PHEV74
RHCZPHEA245LHHE2PHEV74
RHCZPHEA245LHCALAV77
RHCZPHEA245LHHB3ALAV77
RHCZPHEA245LHNSERV78
RHCZPHEA245LHCASERV78
RHCZPHEA245LHCBSERV78
RHCZPHEA245LHOGSERV78
RHCZPHEA245LHHSERV78
RHCZPHEA245LHHASERV78
RHCZPHEA245LHHB2SERV78
RHCZPHEA245LHHB3SERV78
RHCZPHEA245LHHGSERV78
RHCG2THRA249LHHD13LEUV49
RHOG1THRA249LHHGSERV81
RHCATHRA252LHHB3PROV85
RHCATHRA252LHHG3PROV85
RHCTHRA252LHHE1TYRV41
RHCBTHRA252LHOHTYRV41
RHCBTHRA252LHCZTYRV41
RHCBTHRA252LHHE1TYRV41
RHCBTHRA252LHHHTYRV41
RHCBTHRA252LHCGPROV85
RHCBTHRA252LHHB3PROV85
RHCBTHRA252LHHG2PROV85
RHCBTHRA252LHHG3PROV85
RHOTHRA252LHHE1TYRV41
RHCG2THRA252LHCE1TYRV41
RHCG2THRA252LHCE2TYRV41
RHCG2THRA252LHOHTYRV41
RHCG2THRA252LHCZTYRV41
RHCG2THRA252LHHE1TYRV41
RHCG2THRA252LHHHTYRV41
RHCG2THRA252LHCBPROV85
RHCG2THRA252LHCGPROV85
RHCG2THRA252LHCDPROV85
RHCG2THRA252LHHB3PROV85
RHCG2THRA252LHHG2PROV85
RHCG2THRA252LHHG3PROV85
RHCG2THRA252LHHD2PROV85
RHOG1THRA252LHOHTYRV41
RHOG1THRA252LHHHTYRV41
RHOG1THRA252LHHB2SERV81
RHOG1THRA252LHCBPROV85
RHOG1THRA252LHCGPROV85
RHOG1THRA252LHHB2PROV85
RHOG1THRA252LHHB3PROV85
RHOG1THRA252LHHG2PROV85
RHOG1THRA252LHHG3PROV85
RHNILEA253LHHE1TYRV41
RHCAILEA253LHHE1TYRV41
RHCG1ILEA253LHHG3METV45
RHCGLYA256LHCD1LEUV38
RHCGLYA256LHHD12LEUV38
RHCGLYA256LHHD13LEUV38
RHOGLYA256LHHZPHEV34
RHOGLYA256LHCD1LEUV38
RHOGLYA256LHHD12LEUV38
RHOGLYA256LHHD13LEUV38
RHOGLYA256LHHD22LEUV38
RHOGLYA256LHHD23LEUV38
RHNTHRA257LHHD12LEUV38
RHCATHRA257LHHD12LEUV38
RHCATHRA257LHHD23LEUV38
RHOTHRA257LHHD23LEUV38
RHCG2THRA257LHHD12LEUV38
RHCG2THRA257LHSDMETV42
RHCG2THRA257LHCEMETV42
RHCG2THRA257LHHE1METV42
RHCG2THRA257LHHE3METV42
RHCAILEA259LHHZPHEV34
RHCILEA259LHCE1PHEV34
RHCILEA259LHCZPHEV34
RHCILEA259LHHE1PHEV34
RHCILEA259LHHZPHEV34
RHCBILEA259LHHZPHEV34
RHOILEA259LHCE1PHEV34
RHOILEA259LHCZPHEV34
RHOILEA259LHHE1PHEV34
RHOILEA259LHHZPHEV34
RHOILEA259LHHG3METV92
RHOILEA259LHHE2METV92
RHCG1ILEA259LHHG22VALV89
RHCG2ILEA259LHCE2PHEV34
RHCG2ILEA259LHCZPHEV34
RHCG2ILEA259LHHE2PHEV34
RHCG2ILEA259LHHZPHEV34
RHCG2ILEA259LHHAVALV89
RHCG2ILEA259LHHG22VALV89
RHCG2ILEA259LHHB2METV92
RHCG2ILEA259LHHG3METV92
RHCD1ILEA259LHCG2VALV89
RHCD1ILEA259LHHG21VALV89
RHCD1ILEA259LHHG22VALV89
RHCD1ILEA259LHHG23VALV89
RHNPHEA260LHCE1PHEV34
RHNPHEA260LHCE2PHEV34
RHNPHEA260LHCZPHEV34
RHNPHEA260LHHE1PHEV34
RHNPHEA260LHHE2PHEV34
RHNPHEA260LHHZPHEV34
RHNPHEA260LHHD22LEUV38
RHCAPHEA260LHCD1PHEV34
RHCAPHEA260LHCE1PHEV34
RHCAPHEA260LHCE2PHEV34
RHCAPHEA260LHCZPHEV34
RHCAPHEA260LHHE1PHEV34
RHCAPHEA260LHHZPHEV34
RHCAPHEA260LHCD2LEUV38
RHCAPHEA260LHHD21LEUV38
RHCAPHEA260LHHD22LEUV38
RHCAPHEA260LHHD23LEUV38
RHCPHEA260LHCE1PHEV34
RHCPHEA260LHCZPHEV34
RHCPHEA260LHHE1PHEV34
RHCPHEA260LHHZPHEV34
RHCPHEA260LHHD22LEUV38
RHCBPHEA260LHCD1PHEV34
RHCBPHEA260LHCE1PHEV34
RHCBPHEA260LHCZPHEV34
RHCBPHEA260LHHE1PHEV34
RHCBPHEA260LHHZPHEV34
RHCBPHEA260LHCGLEUV38
RHCBPHEA260LHCD1LEUV38
RHCBPHEA260LHCD2LEUV38
RHCBPHEA260LHHB2LEUV38
RHCBPHEA260LHHD12LEUV38
RHCBPHEA260LHHD13LEUV38
RHCBPHEA260LHHD21LEUV38
RHCBPHEA260LHHD22LEUV38
RHCBPHEA260LHHD23LEUV38
RHOPHEA260LHCE1PHEV34
RHOPHEA260LHHD1PHEV34
RHOPHEA260LHHE1PHEV34
RHCGPHEA260LHCD1PHEV34
RHCGPHEA260LHCE1PHEV34
RHCGPHEA260LHCZPHEV34
RHCGPHEA260LHHD1PHEV34
RHCGPHEA260LHHE1PHEV34
RHCGPHEA260LHHZPHEV34
RHCGPHEA260LHHAALAV35
RHCGPHEA260LHCBLEUV38
RHCGPHEA260LHCGLEUV38
RHCGPHEA260LHCD2LEUV38
RHCGPHEA260LHHB2LEUV38
RHCGPHEA260LHHB3LEUV38
RHCGPHEA260LHHGLEUV38
RHCGPHEA260LHHD21LEUV38
RHCGPHEA260LHHD22LEUV38
RHCGPHEA260LHHD23LEUV38
RHCD1PHEA260LHCE1PHEV34
RHCD1PHEA260LHHE1PHEV34
RHCD1PHEA260LHCGLEUV38
RHCD1PHEA260LHCD2LEUV38
RHCD1PHEA260LHHD21LEUV38
RHCD1PHEA260LHHD22LEUV38
RHCD1PHEA260LHHD23LEUV38
RHCD2PHEA260LHCPHEV34
RHCD2PHEA260LHOPHEV34
RHCD2PHEA260LHCGPHEV34
RHCD2PHEA260LHCD1PHEV34
RHCD2PHEA260LHCE1PHEV34
RHCD2PHEA260LHCZPHEV34
RHCD2PHEA260LHHD1PHEV34
RHCD2PHEA260LHHE1PHEV34
RHCD2PHEA260LHHZPHEV34
RHCD2PHEA260LHNALAV35
RHCD2PHEA260LHCAALAV35
RHCD2PHEA260LHHAALAV35
RHCD2PHEA260LHCBLEUV38
RHCD2PHEA260LHCGLEUV38
RHCD2PHEA260LHCD2LEUV38
RHCD2PHEA260LHHB2LEUV38
RHCD2PHEA260LHHB3LEUV38
RHCD2PHEA260LHHD21LEUV38
RHCD2PHEA260LHHD22LEUV38
RHCD2PHEA260LHHD23LEUV38
RHCE1PHEA260LHHE1PHEV34
RHCE1PHEA260LHHAALAV35
RHCE1PHEA260LHCD2LEUV38
RHCE1PHEA260LHHD21LEUV38
RHCE1PHEA260LHHD22LEUV38
RHCE1PHEA260LHHD23LEUV38
RHCE2PHEA260LHCPHEV34
RHCE2PHEA260LHOPHEV34
RHCE2PHEA260LHCD1PHEV34
RHCE2PHEA260LHCE1PHEV34
RHCE2PHEA260LHHD1PHEV34
RHCE2PHEA260LHHE1PHEV34
RHCE2PHEA260LHNALAV35
RHCE2PHEA260LHCAALAV35
RHCE2PHEA260LHCALAV35
RHCE2PHEA260LHCBALAV35
RHCE2PHEA260LHOALAV35
RHCE2PHEA260LHHALAV35
RHCE2PHEA260LHHAALAV35
RHCE2PHEA260LHHB1ALAV35
RHCE2PHEA260LHHB3ALAV35
RHCE2PHEA260LHCBLEUV38
RHCE2PHEA260LHCGLEUV38
RHCE2PHEA260LHCD2LEUV38
RHCE2PHEA260LHHB2LEUV38
RHCE2PHEA260LHHB3LEUV38
RHCE2PHEA260LHHD21LEUV38
RHCE2PHEA260LHHD22LEUV38
RHCZPHEA260LHHD1PHEV34
RHCZPHEA260LHHE1PHEV34
RHCZPHEA260LHNALAV35
RHCZPHEA260LHCAALAV35
RHCZPHEA260LHCALAV35
RHCZPHEA260LHCBALAV35
RHCZPHEA260LHOALAV35
RHCZPHEA260LHHAALAV35
RHCZPHEA260LHHB1ALAV35
RHCZPHEA260LHHB3ALAV35
RHCZPHEA260LHCD2LEUV38
RHCZPHEA260LHHB3LEUV38
RHCZPHEA260LHHD21LEUV38
RHCZPHEA260LHHD22LEUV38
RHNMETA261LHHE1PHEV34
RHNLEUA263LHHE2METV92
RHCALEUA263LHCEMETV92
RHCALEUA263LHHB3METV92
RHCALEUA263LHHE1METV92
RHCALEUA263LHHE2METV92
RHCALEUA263LHHE3METV92
RHCLEUA263LHSDMETV92
RHCLEUA263LHCEMETV92
RHCLEUA263LHHE1METV92
RHCLEUA263LHHE2METV92
RHCLEUA263LHHE3METV92
RHCBLEUA263LHCBMETV92
RHCBLEUA263LHCGMETV92
RHCBLEUA263LHCEMETV92
RHCBLEUA263LHHB2METV92
RHCBLEUA263LHHB3METV92
RHCBLEUA263LHHG3METV92
RHCBLEUA263LHHE1METV92
RHCBLEUA263LHHE2METV92
RHCBLEUA263LHHE3METV92
RHOLEUA263LHSDMETV92
RHOLEUA263LHCEMETV92
RHOLEUA263LHHB3METV92
RHOLEUA263LHHE1METV92
RHOLEUA263LHHE2METV92
RHOLEUA263LHHE3METV92
RHCGLEUA263LHHB3METV92
RHCD1LEUA263LHCBMETV92
RHCD1LEUA263LHHB2METV92
RHCD1LEUA263LHHB3METV92
R-NGLNA264LHCEMETV92
R-NGLNA264LHHE1METV92
R-NGLNA264LHHE2METV92
R-NGLNA264LHHE3METV92
R-CAGLNA264LHCEMETV92
R-CAGLNA264LHHE1METV92
R-CAGLNA264LHHE2METV92
R-CGLNA264LHHE1METV92
R-CGLNA264LHHE2METV92
R-CBGLNA264LHHD1PHEV34
R-CBGLNA264LHHE1METV92
R-CBGLNA264LHHE2METV92
R-CGGLNA264LHHD1PHEV34
R-CGGLNA264LHHB3ALAV35
R-CDGLNA264LHHD1PHEV34
R-CDGLNA264LHCBALAV35
R-CDGLNA264LHHB3ALAV35
R-NE2GLNA264LHOGLYV31
R-NE2GLNA264LHCBALAV35
R-NE2GLNA264LHHB1ALAV35
R-NE2GLNA264LHHB2ALAV35
R-NE2GLNA264LHHB3ALAV35
R-OE1GLNA264LHHD1PHEV34
R-OE1GLNA264LHHE1PHEV34
R-OE1GLNA264LHCBALAV35
R-OE1GLNA264LHHAALAV35
R-OE1GLNA264LHHB3ALAV35
R-NPROA265LHHE1METV92
R-CGPROA265LHHA3GLYV31
R-CGPROA265LHHE1METV92
R-CDPROA265LHHA2GLYV31
R-CDPROA265LHHA3GLYV31
R-CDPROA265LHCEMETV92
R-CDPROA265LHHE1METV92
RHOGSERA268LHHA3GLYV31
RHCGGLNA273LHHD12LEUV39
RHCGGLNA273LHHD23LEUV39
RHCDGLNA273LHHB1ALAV35
RHCDGLNA273LHCD1LEUV39
RHCDGLNA273LHHGLEUV39
RHCDGLNA273LHHD12LEUV39
RHCDGLNA273LHHD23LEUV39
RHNE2GLNA273LHCBALAV35
RHNE2GLNA273LHOALAV35
RHNE2GLNA273LHHAALAV35
RHNE2GLNA273LHHB1ALAV35
RHNE2GLNA273LHCGLEUV39
RHNE2GLNA273LHCD1LEUV39
RHNE2GLNA273LHCD2LEUV39
RHNE2GLNA273LHHGLEUV39
RHNE2GLNA273LHHD11LEUV39
RHNE2GLNA273LHHD12LEUV39
RHNE2GLNA273LHHD13LEUV39
RHNE2GLNA273LHHD23LEUV39
RHOE1GLNA273LHHB1ALAV35
RHOE1GLNA273LHHD12LEUV39
RHCG1VALA277LHHD23LEUV38
RHCBPHEA280LHHE3METV42
RHCGPHEA280LHCEMETV42
RHCGPHEA280LHHE1METV42
RHCGPHEA280LHHE2METV42
RHCGPHEA280LHHE3METV42
RHCD1PHEA280LHSDMETV42
RHCD1PHEA280LHCEMETV42
RHCD1PHEA280LHHE1METV42
RHCD1PHEA280LHHE2METV42
RHCD1PHEA280LHHE3METV42
RHCD2PHEA280LHCEMETV42
RHCD2PHEA280LHHE1METV42
RHCD2PHEA280LHHE2METV42
RHCD2PHEA280LHHE3METV42
RHCE1PHEA280LHSDMETV42
RHCE1PHEA280LHCEMETV42
RHCE1PHEA280LHHE1METV42
RHCE1PHEA280LHHE2METV42
RHCE1PHEA280LHHE3METV42
RHCE2PHEA280LHCEMETV42
RHCE2PHEA280LHHE1METV42
RHCE2PHEA280LHHE2METV42
RHCE2PHEA280LHHE3METV42
RHCZPHEA280LHSDMETV42
RHCZPHEA280LHCEMETV42
RHCZPHEA280LHHE1METV42
RHCZPHEA280LHHE2METV42
RHCZPHEA280LHHE3METV42
R-CD2LEUA312LHHZ2LYSV313

 - 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