Q6IFN5_Q96RD2.1 contacts (residues)

ReceptorR: Secondary StructureR: ResidueR; ChainR: Residue numberLigandL: Secondary StructureL: ResidueL: ChainL: Residue Number
R-META1LHPROV141
R-META1LHARGV145
RHTYRA138LSALAV95
RHTYRA138LHASPV97
RHTYRA138LHALAV98
RHPHEA141L-ALAV12
R-HISA146LSVALV13
RHILEA153LSALAV95
RHILEA153LHALAV98
RHARGA157LHTHRV101
RHARGA157LHPHEV105
RHARGA157LHLEUV74
RHARGA157LHTHRV77
RHLEUA158LHTHRV101
RHLEUA158LHPHEV105
RHLEUA158LHASPV97
RHLEUA158LHALAV98
RHPHEA161LHVALV100
RHPHEA161LHTHRV101
RHPHEA161LHPHEV104
RHPHEA161LHPHEV105
RHPHEA161LHILEV162
RHLEUA162LHLYSV166
RHLEUA162LHASPV97
RHLEUA164LHPHEV155
RHLEUA164LHPHEV159
RHLEUA165LHPHEV159
RHLEUA165LHPHEV163
RHLEUA165LHLYSV166
RHPHEA168LHPHEV155
RHPHEA168LHPHEV159
RHILEA169LHPHEV159
RHILEA169LHPHEV163
RHLEUA172LHPHEV163
R-SERA2LHARGV145
RHGLUA214L-METV1
RHMETA215L-METV1
RHTYRA218L-METV1
RHALAA222L-THRV4
RHILEA223LHARGV167
RHPHEA224LHPHEV163
RHPHEA224LHARGV167
RHCYSA226L-ASNV5
RHLEUA227LHARGV167
RHLEUA227L-VALV6
RHLEUA227L-ILEV8
RHSERA230L-THRV7
RHSERA230L-ILEV8
RHPHEA234L-HISV10
RHPHEA234L-ALAV12
RHTYRA277L-HISV3
R-TYRA3LHARGV145
R-TYRA3LHLEUV148
R-TYRA3LHALAV149

 - 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





Q6IFN5_Q96RD2.1 contacts (residues & atoms)

ReceptorR: Secondary StructureR: AtomR: ResidueR; ChainR: Residue numberLigandL: Secondary StructureL; AtomL: ResidueL: ChainL: Residue Number
R-NMETA1LHOPROV141
R-NMETA1LHHB2PROV141
R-NMETA1LHCGARGV145
R-NMETA1LHCDARGV145
R-NMETA1LHNEARGV145
R-NMETA1LHCZARGV145
R-NMETA1LHHG2ARGV145
R-NMETA1LHHG3ARGV145
R-NMETA1LHHD3ARGV145
R-NMETA1LHHEARGV145
R-CAMETA1LHHG3ARGV145
R-CAMETA1LHHD3ARGV145
R-CMETA1LHHD3ARGV145
R-NSERA2LHHG2ARGV145
R-NSERA2LHHD3ARGV145
R-CASERA2LHHD3ARGV145
R-CBSERA2LHHD3ARGV145
R-CBSERA2LHHH11ARGV145
R-OSERA2LHHD3ARGV145
R-OGSERA2LHCDARGV145
R-OGSERA2LHNH1ARGV145
R-OGSERA2LHHD3ARGV145
R-OGSERA2LHHH11ARGV145
R-OGSERA2LHHH12ARGV145
R-CBTYRA3LHCD2LEUV148
R-CBTYRA3LHHD21LEUV148
R-CBTYRA3LHHD22LEUV148
R-CBTYRA3LHHD23LEUV148
R-CGTYRA3LHCD2LEUV148
R-CGTYRA3LHHGLEUV148
R-CGTYRA3LHHD21LEUV148
R-CGTYRA3LHHD23LEUV148
R-CD1TYRA3LHHD21LEUV148
R-CD2TYRA3LHCGARGV145
R-CD2TYRA3LHHAARGV145
R-CD2TYRA3LHHG2ARGV145
R-CD2TYRA3LHCD2LEUV148
R-CD2TYRA3LHHB3LEUV148
R-CD2TYRA3LHHGLEUV148
R-CD2TYRA3LHHD21LEUV148
R-CD2TYRA3LHHD22LEUV148
R-CD2TYRA3LHHD23LEUV148
R-CE1TYRA3LHHB3ALAV149
R-CE2TYRA3LHCAARGV145
R-CE2TYRA3LHCARGV145
R-CE2TYRA3LHCBARGV145
R-CE2TYRA3LHOARGV145
R-CE2TYRA3LHCGARGV145
R-CE2TYRA3LHHAARGV145
R-CE2TYRA3LHHB3ARGV145
R-CE2TYRA3LHHG2ARGV145
R-CE2TYRA3LHHD2ARGV145
R-CE2TYRA3LHHB3LEUV148
R-CE2TYRA3LHHD21LEUV148
R-CE2TYRA3LHHB3ALAV149
R-OHTYRA3LHOARGV145
R-OHTYRA3LHHB3ARGV145
R-OHTYRA3LHCBALAV149
R-OHTYRA3LHHB1ALAV149
R-OHTYRA3LHHB3ALAV149
R-CZTYRA3LHOARGV145
R-CZTYRA3LHHB3ARGV145
R-CZTYRA3LHHG2ARGV145
R-CZTYRA3LHHD21LEUV148
R-CZTYRA3LHHB3ALAV149
RHCGTYRA138LHOD2ASPV97
RHCD1TYRA138LHOD2ASPV97
RHCD1TYRA138LHHB2ASPV97
RHCD2TYRA138LHOD2ASPV97
RHCE1TYRA138LHCBASPV97
RHCE1TYRA138LHCGASPV97
RHCE1TYRA138LHOD2ASPV97
RHCE1TYRA138LHHB2ASPV97
RHCE1TYRA138LHHB3ASPV97
RHCE2TYRA138LSHB1ALAV95
RHCE2TYRA138LHOD2ASPV97
RHCE2TYRA138LHHASPV97
RHCE2TYRA138LHHB2ASPV97
RHOHTYRA138LSCBALAV95
RHOHTYRA138LSHB1ALAV95
RHOHTYRA138LSHB2ALAV95
RHOHTYRA138LSHB3ALAV95
RHOHTYRA138LHNASPV97
RHOHTYRA138LHCBASPV97
RHOHTYRA138LHOD2ASPV97
RHOHTYRA138LHHASPV97
RHOHTYRA138LHHB2ASPV97
RHOHTYRA138LHHALAV98
RHCZTYRA138LSHB1ALAV95
RHCZTYRA138LHCBASPV97
RHCZTYRA138LHCGASPV97
RHCZTYRA138LHOD2ASPV97
RHCZTYRA138LHHASPV97
RHCZTYRA138LHHB2ASPV97
RHCE1PHEA141L-HB1ALAV12
RHCE2PHEA141L-HB1ALAV12
RHCZPHEA141L-CBALAV12
RHCZPHEA141L-HB1ALAV12
R-CE1HISA146LSHG23VALV13
R-NE2HISA146LSHG23VALV13
RHCG2ILEA153LSHB2ALAV95
RHCG2ILEA153LSHB3ALAV95
RHCG2ILEA153LHHB2ALAV98
RHCD1ILEA153LSHB3ALAV95
RHCARGA157LHHG21THRV101
RHCARGA157LHHE2PHEV105
RHCARGA157LHHZPHEV105
RHCBARGA157LHHE2PHEV105
RHCBARGA157LHHZPHEV105
RHOARGA157LHHG21THRV101
RHOARGA157LHCE2PHEV105
RHOARGA157LHCZPHEV105
RHOARGA157LHHE2PHEV105
RHOARGA157LHHZPHEV105
RHNEARGA157LHHD21LEUV74
RHNEARGA157LHHD22LEUV74
RHNH1ARGA157LHHALEUV74
RHNH1ARGA157LHHD21LEUV74
RHNH1ARGA157LHCG2THRV77
RHNH1ARGA157LHHBTHRV77
RHNH1ARGA157LHHG21THRV77
RHNH1ARGA157LHHG23THRV77
RHNH2ARGA157LHHD21LEUV74
RHNH2ARGA157LHHD22LEUV74
RHNH2ARGA157LHHG21THRV77
RHCZARGA157LHCD2LEUV74
RHCZARGA157LHHD21LEUV74
RHCZARGA157LHHD22LEUV74
RHCZARGA157LHHG21THRV77
RHNLEUA158LHHG21THRV101
RHNLEUA158LHHE2PHEV105
RHCALEUA158LHCG2THRV101
RHCALEUA158LHHG21THRV101
RHCALEUA158LHHG22THRV101
RHCLEUA158LHHG21THRV101
RHCBLEUA158LHHG21THRV101
RHCGLEUA158LHHAALAV98
RHCGLEUA158LHOG1THRV101
RHCGLEUA158LHHG1THRV101
RHCGLEUA158LHHG21THRV101
RHCD1LEUA158LHCASPV97
RHCD1LEUA158LHOASPV97
RHCD1LEUA158LHHB3ASPV97
RHCD1LEUA158LHHAALAV98
RHCD1LEUA158LHCBTHRV101
RHCD1LEUA158LHCG2THRV101
RHCD1LEUA158LHOG1THRV101
RHCD1LEUA158LHHBTHRV101
RHCD1LEUA158LHHG1THRV101
RHCD1LEUA158LHHG21THRV101
RHCD1LEUA158LHHG22THRV101
RHCD2LEUA158LHHAALAV98
RHCD2LEUA158LHHB2ALAV98
RHCBPHEA161LHCG2THRV101
RHCBPHEA161LHHG21THRV101
RHCBPHEA161LHHG22THRV101
RHCBPHEA161LHHE2PHEV105
RHCBPHEA161LHHZPHEV105
RHCGPHEA161LHCG2THRV101
RHCGPHEA161LHHATHRV101
RHCGPHEA161LHHG22THRV101
RHCD1PHEA161LHCBTHRV101
RHCD1PHEA161LHCG2THRV101
RHCD1PHEA161LHOG1THRV101
RHCD1PHEA161LHHATHRV101
RHCD1PHEA161LHHG1THRV101
RHCD1PHEA161LHHG22THRV101
RHCD2PHEA161LHHATHRV101
RHCD2PHEA161LHHG22THRV101
RHCD2PHEA161LHCGPHEV104
RHCD2PHEA161LHCD1PHEV104
RHCD2PHEA161LHCE1PHEV104
RHCD2PHEA161LHHB3PHEV104
RHCD2PHEA161LHHD1PHEV104
RHCD2PHEA161LHHE1PHEV104
RHCE1PHEA161LHHG11VALV100
RHCE1PHEA161LHCATHRV101
RHCE1PHEA161LHOG1THRV101
RHCE1PHEA161LHHATHRV101
RHCE1PHEA161LHHG22THRV101
RHCE1PHEA161LHHG21ILEV162
RHCE2PHEA161LHHATHRV101
RHCE2PHEA161LHCBPHEV104
RHCE2PHEA161LHCGPHEV104
RHCE2PHEA161LHCD1PHEV104
RHCE2PHEA161LHCD2PHEV104
RHCE2PHEA161LHCE1PHEV104
RHCE2PHEA161LHCE2PHEV104
RHCE2PHEA161LHCZPHEV104
RHCE2PHEA161LHHB2PHEV104
RHCE2PHEA161LHHB3PHEV104
RHCE2PHEA161LHHD1PHEV104
RHCE2PHEA161LHHD2PHEV104
RHCE2PHEA161LHHG21ILEV162
RHCZPHEA161LHHG11VALV100
RHCZPHEA161LHHATHRV101
RHCZPHEA161LHCBPHEV104
RHCZPHEA161LHCGPHEV104
RHCZPHEA161LHCD2PHEV104
RHCZPHEA161LHHB2PHEV104
RHCZPHEA161LHHB3PHEV104
RHCZPHEA161LHHD2PHEV104
RHCZPHEA161LHCG2ILEV162
RHCZPHEA161LHHG21ILEV162
RHCZPHEA161LHHG22ILEV162
RHCD2LEUA162LHHB3ASPV97
RHCD2LEUA162LHHZ2LYSV166
RHCLEUA164LHHE2PHEV159
RHCBLEUA164LHHE2PHEV155
RHCBLEUA164LHHZPHEV155
RHOLEUA164LHHZPHEV155
RHOLEUA164LHHE2PHEV159
RHCD1LEUA164LHHE2PHEV155
RHNLEUA165LHHE2PHEV159
RHCALEUA165LHCE2PHEV159
RHCALEUA165LHHE2PHEV159
RHCLEUA165LHHE2PHEV159
RHCLEUA165LHHZPHEV159
RHCBLEUA165LHHE2PHEV159
RHOLEUA165LHCE2PHEV159
RHOLEUA165LHCZPHEV159
RHOLEUA165LHHE2PHEV159
RHOLEUA165LHHZPHEV159
RHCGLEUA165LHHE2PHEV159
RHCD1LEUA165LHCE2PHEV159
RHCD1LEUA165LHCZPHEV159
RHCD1LEUA165LHHE2PHEV159
RHCD1LEUA165LHHZPHEV159
RHCD1LEUA165LHHB2PHEV163
RHCD1LEUA165LHHD2PHEV163
RHCD2LEUA165LHCDLYSV166
RHCD2LEUA165LHNZLYSV166
RHCD2LEUA165LHHD2LYSV166
RHCD2LEUA165LHHD3LYSV166
RHCD2LEUA165LHHZ2LYSV166
RHCD2LEUA165LHHZ3LYSV166
RHNPHEA168LHHZPHEV159
RHCAPHEA168LHCZPHEV159
RHCAPHEA168LHHZPHEV159
RHCPHEA168LHCZPHEV159
RHCPHEA168LHHE1PHEV159
RHCPHEA168LHHZPHEV159
RHCBPHEA168LHHZPHEV155
RHCBPHEA168LHCD1PHEV159
RHCBPHEA168LHCD2PHEV159
RHCBPHEA168LHCE1PHEV159
RHCBPHEA168LHCE2PHEV159
RHCBPHEA168LHCZPHEV159
RHCBPHEA168LHHE1PHEV159
RHCBPHEA168LHHE2PHEV159
RHCBPHEA168LHHZPHEV159
RHOPHEA168LHHE1PHEV159
RHOPHEA168LHHZPHEV159
RHCGPHEA168LHCE1PHEV155
RHCGPHEA168LHCZPHEV155
RHCGPHEA168LHHE1PHEV155
RHCGPHEA168LHHZPHEV155
RHCGPHEA168LHCD2PHEV159
RHCGPHEA168LHCE1PHEV159
RHCGPHEA168LHCE2PHEV159
RHCGPHEA168LHCZPHEV159
RHCGPHEA168LHHE2PHEV159
RHCGPHEA168LHHZPHEV159
RHCD1PHEA168LHCE1PHEV155
RHCD1PHEA168LHHE1PHEV155
RHCD1PHEA168LHHZPHEV155
RHCD2PHEA168LHCE1PHEV155
RHCD2PHEA168LHCE2PHEV155
RHCD2PHEA168LHCZPHEV155
RHCD2PHEA168LHHE1PHEV155
RHCD2PHEA168LHHZPHEV155
RHCD2PHEA168LHCD2PHEV159
RHCD2PHEA168LHCE2PHEV159
RHCD2PHEA168LHCZPHEV159
RHCD2PHEA168LHHD2PHEV159
RHCD2PHEA168LHHE2PHEV159
RHCE1PHEA168LHCE1PHEV155
RHCE1PHEA168LHCZPHEV155
RHCE1PHEA168LHHE1PHEV155
RHCE1PHEA168LHHZPHEV155
RHCE2PHEA168LHCD1PHEV155
RHCE2PHEA168LHCE1PHEV155
RHCE2PHEA168LHCE2PHEV155
RHCE2PHEA168LHCZPHEV155
RHCE2PHEA168LHHE1PHEV155
RHCE2PHEA168LHHE2PHEV155
RHCE2PHEA168LHHZPHEV155
RHCZPHEA168LHCD1PHEV155
RHCZPHEA168LHCE1PHEV155
RHCZPHEA168LHCZPHEV155
RHCZPHEA168LHHD1PHEV155
RHCZPHEA168LHHE1PHEV155
RHCZPHEA168LHHZPHEV155
RHNILEA169LHCZPHEV159
RHNILEA169LHHZPHEV159
RHCAILEA169LHHZPHEV159
RHCAILEA169LHHE2PHEV163
RHCBILEA169LHHZPHEV159
RHCBILEA169LHCE2PHEV163
RHCBILEA169LHHE2PHEV163
RHCG1ILEA169LHHZPHEV159
RHCG1ILEA169LHCD2PHEV163
RHCG1ILEA169LHCE2PHEV163
RHCG1ILEA169LHCZPHEV163
RHCG1ILEA169LHHD2PHEV163
RHCG1ILEA169LHHE2PHEV163
RHCG2ILEA169LHCE2PHEV163
RHCG2ILEA169LHHE2PHEV163
RHCD1ILEA169LHCD2PHEV163
RHCD1ILEA169LHCE2PHEV163
RHCD1ILEA169LHHD2PHEV163
RHCD1ILEA169LHHE2PHEV163
RHCD2LEUA172LHCE1PHEV163
RHCD2LEUA172LHCZPHEV163
RHCD2LEUA172LHHE1PHEV163
RHCD2LEUA172LHHZPHEV163
RHCAGLUA214L-HE3METV1
RHCGLUA214L-HE1METV1
RHCGLUA214L-HE3METV1
RHCBGLUA214L-CEMETV1
RHCBGLUA214L-HE1METV1
RHCBGLUA214L-HE2METV1
RHCBGLUA214L-HE3METV1
RHOGLUA214L-HE1METV1
RHOGLUA214L-HE3METV1
RHOE2GLUA214L-CEMETV1
RHOE2GLUA214L-HE1METV1
RHOE2GLUA214L-HE2METV1
RHNMETA215L-HE3METV1
RHCAMETA215L-HE3METV1
RHSDMETA215L-HG3METV1
RHCGTYRA218L-SDMETV1
RHCGTYRA218L-CEMETV1
RHCGTYRA218L-HE1METV1
RHCGTYRA218L-HE3METV1
RHCD1TYRA218L-SDMETV1
RHCD1TYRA218L-HE1METV1
RHCD2TYRA218L-CGMETV1
RHCD2TYRA218L-SDMETV1
RHCD2TYRA218L-CEMETV1
RHCD2TYRA218L-HG3METV1
RHCD2TYRA218L-HE1METV1
RHCD2TYRA218L-HE2METV1
RHCD2TYRA218L-HE3METV1
RHCE1TYRA218L-SDMETV1
RHCE1TYRA218L-CEMETV1
RHCE1TYRA218L-HE1METV1
RHCE2TYRA218L-CGMETV1
RHCE2TYRA218L-SDMETV1
RHCE2TYRA218L-CEMETV1
RHCE2TYRA218L-HG3METV1
RHCE2TYRA218L-HE1METV1
RHCE2TYRA218L-HE2METV1
RHCE2TYRA218L-HE3METV1
RHOHTYRA218L-SDMETV1
RHOHTYRA218L-CEMETV1
RHOHTYRA218L-HE1METV1
RHCZTYRA218L-SDMETV1
RHCZTYRA218L-CEMETV1
RHCZTYRA218L-HE1METV1
RHCZTYRA218L-HE2METV1
RHCZTYRA218L-HE3METV1
RHCBALAA222L-OTHRV4
RHCBALAA222L-HG1THRV4
RHCBILEA223LHHH12ARGV167
RHCG1ILEA223LHHH12ARGV167
RHCG2ILEA223LHNH1ARGV167
RHCG2ILEA223LHNH2ARGV167
RHCG2ILEA223LHCZARGV167
RHCG2ILEA223LHHH11ARGV167
RHCG2ILEA223LHHH12ARGV167
RHCG2ILEA223LHHH21ARGV167
RHCG2ILEA223LHHH22ARGV167
RHCD1ILEA223LHNH1ARGV167
RHCD1ILEA223LHHH11ARGV167
RHCD1ILEA223LHHH12ARGV167
RHCD1PHEA224LHHH21ARGV167
RHCD1PHEA224LHHH22ARGV167
RHCD2PHEA224LHHH22ARGV167
RHCE1PHEA224LHHZPHEV163
RHCE1PHEA224LHNH2ARGV167
RHCE1PHEA224LHHH21ARGV167
RHCE1PHEA224LHHH22ARGV167
RHCE2PHEA224LHNH2ARGV167
RHCE2PHEA224LHHH21ARGV167
RHCE2PHEA224LHHH22ARGV167
RHCZPHEA224LHHZPHEV163
RHCZPHEA224LHNH2ARGV167
RHCZPHEA224LHHH21ARGV167
RHCZPHEA224LHHH22ARGV167
RHCBCYSA226L-HAASNV5
RHSGCYSA226L-OD1ASNV5
RHSGCYSA226L-HAASNV5
RHCALEUA227L-HD13ILEV8
RHCBLEUA227L-CD1ILEV8
RHCBLEUA227L-HG12ILEV8
RHCBLEUA227L-HD11ILEV8
RHCBLEUA227L-HD13ILEV8
RHCGLEUA227L-OVALV6
RHCGLEUA227L-CG1ILEV8
RHCGLEUA227L-CD1ILEV8
RHCGLEUA227L-HG12ILEV8
RHCGLEUA227L-HG13ILEV8
RHCGLEUA227L-HD11ILEV8
RHCGLEUA227L-HD12ILEV8
RHCGLEUA227L-HD13ILEV8
RHCD1LEUA227L-CG1ILEV8
RHCD1LEUA227L-CD1ILEV8
RHCD1LEUA227L-HG12ILEV8
RHCD1LEUA227L-HD11ILEV8
RHCD1LEUA227L-HD12ILEV8
RHCD1LEUA227L-HD13ILEV8
RHCD1LEUA227LHHG2ARGV167
RHCD2LEUA227L-OVALV6
RHCD2LEUA227L-HBVALV6
RHCD2LEUA227L-HG11VALV6
RHCD2LEUA227L-NILEV8
RHCD2LEUA227L-CAILEV8
RHCD2LEUA227L-CBILEV8
RHCD2LEUA227L-CG1ILEV8
RHCD2LEUA227L-CD1ILEV8
RHCD2LEUA227L-HILEV8
RHCD2LEUA227L-HBILEV8
RHCD2LEUA227L-HG12ILEV8
RHCD2LEUA227L-HG13ILEV8
RHCD2LEUA227L-HD11ILEV8
RHCD2LEUA227L-HD12ILEV8
RHCD2LEUA227L-HD13ILEV8
RHCASERA230L-HG22THRV7
RHCBSERA230L-CATHRV7
RHCBSERA230L-CG2THRV7
RHCBSERA230L-HATHRV7
RHCBSERA230L-HBTHRV7
RHCBSERA230L-HG22THRV7
RHCBSERA230L-HILEV8
RHOGSERA230L-HATHRV7
RHOGSERA230L-HG22THRV7
RHOGSERA230L-NILEV8
RHOGSERA230L-HILEV8
RHOGSERA230L-HBILEV8
RHCD1PHEA234L-HE1HISV10
RHCE1PHEA234L-HE1HISV10
RHCE1PHEA234L-CAALAV12
RHCE1PHEA234L-CBALAV12
RHCE1PHEA234L-HAALAV12
RHCE1PHEA234L-HB2ALAV12
RHCE2PHEA234L-HB2ALAV12
RHCZPHEA234L-OHISV10
RHCZPHEA234L-NALAV12
RHCZPHEA234L-CBALAV12
RHCZPHEA234L-HALAV12
RHCZPHEA234L-HAALAV12
RHCZPHEA234L-HB2ALAV12
RHCD1TYRA277L-HE1HISV3
RHCE1TYRA277L-CE1HISV3
RHCE1TYRA277L-NE2HISV3
RHCE1TYRA277L-HE1HISV3
RHCE1TYRA277L-HE2HISV3
RHCE2TYRA277L-HE1HISV3
RHOHTYRA277L-ND1HISV3
RHOHTYRA277L-CE1HISV3
RHOHTYRA277L-NE2HISV3
RHOHTYRA277L-HE1HISV3
RHOHTYRA277L-HE2HISV3
RHCZTYRA277L-CE1HISV3
RHCZTYRA277L-NE2HISV3
RHCZTYRA277L-HE1HISV3
RHCZTYRA277L-HE2HISV3

 - 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