Q8NGE8_Q8NGL4.9 contacts (residues)

ReceptorR: Secondary StructureR: ResidueR; ChainR: Residue numberLigandL: Secondary StructureL: ResidueL: ChainL: Residue Number
RHPHEA102LHMETV101
RHPHEA102LSSERV95
RHPHEA102LHSERV97
RHPHEA102LHGLYV98
RHPHEA103LHSERV97
RHLEUA106LHMETV101
RHPHEA120LHARGV52
RHTHRA134LHGLNV140
R-SERA137LHPHEV63
RHGLYA139LHVALV147
RHGLYA139LHALAV148
RHGLYA139LHHISV67
RHARGA140LHARGV52
RHARGA140LHPHEV63
RHARGA140LHHISV67
RHTHRA142LHTYRV151
RHTHRA142LHILEV155
RHGLYA143LHTYRV151
RHGLYA143LHLEUV70
RHLEUA144LHARGV52
RHLEUA144LHLEUV70
RHVALA146LHPHEV105
RHVALA146LHILEV108
RHVALA146LHPHEV109
RHALAA147LHPHEV109
RHALAA147LHLEUV70
RHALAA147LHPHEV73
RHALAA147LHCYSV74
RHTRPA149LHPHEV105
RHVALA150LHPHEV105
RHVALA150LHPHEV109
RHVALA150LHCYSV74
RHVALA150LHTHRV77
RHVALA150LHVALV78
RHGLYA151LHTHRV77
RHPHEA153LHMETV101
RHPHEA153LHGLNV102
RHPHEA153LHPHEV105
RHPHEA153LHVALV78
RHPHEA153LHGLYV98
RHVALA154LHTHRV77
RHVALA154LHVALV78
RHVALA154LHPROV81
RHILEA157LHGLNV102
RHILEA157LHLYSV82
RHILEA157LHGLUV85
RHILEA157LSILEV94
RHILEA160LHGLUV85
RHSERA161LHLYSV82
RHSERA161LHGLUV85
RHSERA161L-VALV89
RHLEUA162LHGLUV85
RHLEUA162L-VALV89
R-LEUA164L-TYRV91
R-LEUA164LSTHRV93
R-LEUA164LSILEV94
R-PROA165L-VALV89
R-PROA165L-GLUV90
R-PROA165L-TYRV91
RSTHRA91L-GLNV8
RSSERA93L-GLNV8
RHSERA95L-SERV10
RHSERA95L-THRV11
RHTHRA99L-THRV11
RHTHRA99LHSERV97

 - 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





Q8NGE8_Q8NGL4.9 contacts (residues & atoms)

ReceptorR: Secondary StructureR: AtomR: ResidueR; ChainR: Residue numberLigandL: Secondary StructureL; AtomL: ResidueL: ChainL: Residue Number
RSOTHRA91L-HE22GLNV8
RSNSERA93L-OE1GLNV8
RSCBSERA93L-OE1GLNV8
RSOGSERA93L-OE1GLNV8
RHCSERA95L-HG1THRV11
RHCBSERA95L-HASERV10
RHCBSERA95L-HB2SERV10
RHCBSERA95L-OG1THRV11
RHCBSERA95L-HTHRV11
RHCBSERA95L-HG1THRV11
RHOSERA95L-OG1THRV11
RHOSERA95L-HG1THRV11
RHOGSERA95L-HASERV10
RHOGSERA95L-HB2SERV10
RHOGSERA95L-NTHRV11
RHOGSERA95L-CATHRV11
RHOGSERA95L-CBTHRV11
RHOGSERA95L-OTHRV11
RHOGSERA95L-OG1THRV11
RHOGSERA95L-HTHRV11
RHOGSERA95L-HG1THRV11
RHCG2THRA99L-HG21THRV11
RHCG2THRA99LHHGSERV97
RHOG1THRA99L-OG1THRV11
RHOG1THRA99L-HBTHRV11
RHOG1THRA99L-HG1THRV11
RHOG1THRA99L-HG21THRV11
RHCBPHEA102LSHGSERV95
RHCGPHEA102LSHGSERV95
RHCD1PHEA102LSHGSERV95
RHCD1PHEA102LHOGSERV97
RHCD1PHEA102LHHGSERV97
RHCD2PHEA102LSHGSERV95
RHCE1PHEA102LHOGSERV97
RHCE1PHEA102LHHB3SERV97
RHCE1PHEA102LHHGSERV97
RHCE1PHEA102LHNGLYV98
RHCE1PHEA102LHCAGLYV98
RHCE1PHEA102LHHA3GLYV98
RHCE1PHEA102LHHG3METV101
RHCE2PHEA102LHCAGLYV98
RHCE2PHEA102LHHA2GLYV98
RHCE2PHEA102LHHA3GLYV98
RHCZPHEA102LHNGLYV98
RHCZPHEA102LHCAGLYV98
RHCZPHEA102LHHA2GLYV98
RHCZPHEA102LHHA3GLYV98
RHCZPHEA102LHHB2METV101
RHCZPHEA102LHHG3METV101
RHCD2PHEA103LHHGSERV97
RHCE1PHEA103LHHB3SERV97
RHCE2PHEA103LHCBSERV97
RHCE2PHEA103LHOGSERV97
RHCE2PHEA103LHHB2SERV97
RHCE2PHEA103LHHB3SERV97
RHCE2PHEA103LHHGSERV97
RHCZPHEA103LHCBSERV97
RHCZPHEA103LHOGSERV97
RHCZPHEA103LHHB2SERV97
RHCZPHEA103LHHB3SERV97
RHCZPHEA103LHHGSERV97
RHCD1LEUA106LHHE2METV101
RHCD2LEUA106LHHG3METV101
RHCD2LEUA106LHHE2METV101
RHCD1PHEA120LHNH1ARGV52
RHCD1PHEA120LHHH11ARGV52
RHCD1PHEA120LHHH12ARGV52
RHCE1PHEA120LHNH1ARGV52
RHCE1PHEA120LHHH11ARGV52
RHCE1PHEA120LHHH12ARGV52
RHCE2PHEA120LHHH11ARGV52
RHCZPHEA120LHNH1ARGV52
RHCZPHEA120LHHD2ARGV52
RHCZPHEA120LHHH11ARGV52
RHCZPHEA120LHHH12ARGV52
RHCG2THRA134LHHG3GLNV140
R-OGSERA137LHHE2PHEV63
RHCAGLYA139LHHE1HISV67
RHCAGLYA139LHHG11VALV147
RHCAGLYA139LHHB2ALAV148
RHCGLYA139LHCE1HISV67
RHCGLYA139LHHE1HISV67
RHCGLYA139LHHG11VALV147
RHOGLYA139LHCE1HISV67
RHOGLYA139LHHE1HISV67
RHNARGA140LHCE1HISV67
RHNARGA140LHHE1HISV67
RHNARGA140LHHE2HISV67
RHCAARGA140LHCE1HISV67
RHCAARGA140LHHE1HISV67
RHCAARGA140LHHE2HISV67
RHCARGA140LHHE1HISV67
RHCBARGA140LHHE1HISV67
RHCBARGA140LHHE2HISV67
RHCGARGA140LHHH21ARGV52
RHCGARGA140LHHE2PHEV63
RHCGARGA140LHCE1HISV67
RHCGARGA140LHNE2HISV67
RHCGARGA140LHHE1HISV67
RHCGARGA140LHHE2HISV67
RHCDARGA140LHHH21ARGV52
RHCDARGA140LHHE2PHEV63
RHCDARGA140LHHE2HISV67
RHNEARGA140LHCD2PHEV63
RHNEARGA140LHCE2PHEV63
RHNEARGA140LHHD2PHEV63
RHNEARGA140LHHE2PHEV63
RHNEARGA140LHHE2HISV67
RHNH2ARGA140LHCD2PHEV63
RHNH2ARGA140LHCE2PHEV63
RHNH2ARGA140LHHD2PHEV63
RHNH2ARGA140LHHE2PHEV63
RHCZARGA140LHCD2PHEV63
RHCZARGA140LHCE2PHEV63
RHCZARGA140LHHD2PHEV63
RHCZARGA140LHHE2PHEV63
RHCG2THRA142LHHB3TYRV151
RHCG2THRA142LHHD11ILEV155
RHNGLYA143LHHD22LEUV70
RHCAGLYA143LHCD2LEUV70
RHCAGLYA143LHHD21LEUV70
RHCAGLYA143LHHD22LEUV70
RHCAGLYA143LHHD23LEUV70
RHCAGLYA143LHHHTYRV151
RHCGLYA143LHCD2LEUV70
RHCGLYA143LHHD13LEUV70
RHCGLYA143LHHD21LEUV70
RHCGLYA143LHHD22LEUV70
RHCGLYA143LHHD23LEUV70
RHOGLYA143LHCGLEUV70
RHOGLYA143LHCD1LEUV70
RHOGLYA143LHCD2LEUV70
RHOGLYA143LHHGLEUV70
RHOGLYA143LHHD13LEUV70
RHOGLYA143LHHD21LEUV70
RHOGLYA143LHHD22LEUV70
RHNLEUA144LHCD2LEUV70
RHNLEUA144LHHD22LEUV70
RHCALEUA144LHHD22LEUV70
RHCGLEUA144LHHH22ARGV52
RHCD1LEUA144LHHH12ARGV52
RHCD1LEUA144LHHH22ARGV52
RHCD2LEUA144LHHH12ARGV52
RHCD2LEUA144LHHH22ARGV52
RHCAVALA146LHHZPHEV109
RHCVALA146LHHZPHEV109
RHCBVALA146LHCE1PHEV109
RHCBVALA146LHCZPHEV109
RHCBVALA146LHHE1PHEV109
RHCBVALA146LHHZPHEV109
RHOVALA146LHHZPHEV109
RHCG1VALA146LHHD1PHEV105
RHCG1VALA146LHHG22ILEV108
RHCG1VALA146LHCD1PHEV109
RHCG1VALA146LHCE1PHEV109
RHCG1VALA146LHCE2PHEV109
RHCG1VALA146LHCZPHEV109
RHCG1VALA146LHHE1PHEV109
RHCG1VALA146LHHE2PHEV109
RHCG1VALA146LHHZPHEV109
RHCG2VALA146LHHE1PHEV109
RHCG2VALA146LHHZPHEV109
RHNALAA147LHSGCYSV74
RHNALAA147LHHZPHEV109
RHCAALAA147LHHD13LEUV70
RHCAALAA147LHSGCYSV74
RHCAALAA147LHHGCYSV74
RHCBALAA147LHCD1LEUV70
RHCBALAA147LHHD11LEUV70
RHCBALAA147LHHD13LEUV70
RHCBALAA147LHHE1PHEV73
RHCBALAA147LHSGCYSV74
RHCBALAA147LHHGCYSV74
RHCATRPA149LHHZPHEV105
RHCTRPA149LHCZPHEV105
RHCTRPA149LHHZPHEV105
RHCBTRPA149LHCE1PHEV105
RHCBTRPA149LHCZPHEV105
RHCBTRPA149LHHE1PHEV105
RHCBTRPA149LHHZPHEV105
RHOTRPA149LHHE2PHEV105
RHOTRPA149LHHZPHEV105
RHCGTRPA149LHHZPHEV105
RHCD2TRPA149LHHZPHEV105
RHCE3TRPA149LHHZPHEV105
RHCAVALA150LHHG21VALV78
RHCAVALA150LHHG22VALV78
RHCVALA150LHHG22THRV77
RHCBVALA150LHOCYSV74
RHCBVALA150LHHACYSV74
RHCBVALA150LHHB3CYSV74
RHCBVALA150LHCG2VALV78
RHCBVALA150LHHG21VALV78
RHCBVALA150LHHG22VALV78
RHCBVALA150LHHG23VALV78
RHCBVALA150LHHE2PHEV109
RHOVALA150LHCG2THRV77
RHOVALA150LHHG21THRV77
RHOVALA150LHHG22THRV77
RHCG1VALA150LHCACYSV74
RHCG1VALA150LHCCYSV74
RHCG1VALA150LHCBCYSV74
RHCG1VALA150LHOCYSV74
RHCG1VALA150LHHACYSV74
RHCG1VALA150LHHB3CYSV74
RHCG1VALA150LHCBTHRV77
RHCG1VALA150LHCG2THRV77
RHCG1VALA150LHHBTHRV77
RHCG1VALA150LHHG22THRV77
RHCG1VALA150LHNVALV78
RHCG1VALA150LHCG2VALV78
RHCG1VALA150LHHVALV78
RHCG1VALA150LHHG21VALV78
RHCG1VALA150LHHG22VALV78
RHCG1VALA150LHHG23VALV78
RHCG1VALA150LHHE2PHEV109
RHCG2VALA150LHCBCYSV74
RHCG2VALA150LHHB3CYSV74
RHCG2VALA150LHCG2VALV78
RHCG2VALA150LHHG21VALV78
RHCG2VALA150LHHG22VALV78
RHCG2VALA150LHHG23VALV78
RHCG2VALA150LHCGPHEV105
RHCG2VALA150LHCD1PHEV105
RHCG2VALA150LHHB3PHEV105
RHCG2VALA150LHHD1PHEV105
RHCG2VALA150LHCD2PHEV109
RHCG2VALA150LHCE2PHEV109
RHCG2VALA150LHCZPHEV109
RHCG2VALA150LHHE2PHEV109
RHCG2VALA150LHHZPHEV109
RHNGLYA151LHHG21THRV77
RHCAGLYA151LHHG21THRV77
RHCBPHEA153LHHE2PHEV105
RHCGPHEA153LHHB3METV101
RHCGPHEA153LHHD2PHEV105
RHCGPHEA153LHHE2PHEV105
RHCD1PHEA153LHHAVALV78
RHCD1PHEA153LHHG13VALV78
RHCD1PHEA153LHHG22VALV78
RHCD1PHEA153LHHAGLNV102
RHCD1PHEA153LHHD2PHEV105
RHCD2PHEA153LHCBMETV101
RHCD2PHEA153LHHB2METV101
RHCD2PHEA153LHHB3METV101
RHCD2PHEA153LHHD2PHEV105
RHCD2PHEA153LHHE2PHEV105
RHCE1PHEA153LHOVALV78
RHCE1PHEA153LHCG1VALV78
RHCE1PHEA153LHHAVALV78
RHCE1PHEA153LHHG13VALV78
RHCE1PHEA153LHHG22VALV78
RHCE1PHEA153LHNGLNV102
RHCE1PHEA153LHCAGLNV102
RHCE1PHEA153LHCBGLNV102
RHCE1PHEA153LHHGLNV102
RHCE1PHEA153LHHAGLNV102
RHCE1PHEA153LHHB3GLNV102
RHCE1PHEA153LHHG3GLNV102
RHCE1PHEA153LHHE21GLNV102
RHCE2PHEA153LHCGLYV98
RHCE2PHEA153LHOGLYV98
RHCE2PHEA153LHHA3GLYV98
RHCE2PHEA153LHCAMETV101
RHCE2PHEA153LHCMETV101
RHCE2PHEA153LHCBMETV101
RHCE2PHEA153LHHB2METV101
RHCE2PHEA153LHHB3METV101
RHCE2PHEA153LHNGLNV102
RHCE2PHEA153LHCAGLNV102
RHCE2PHEA153LHHGLNV102
RHCE2PHEA153LHHAGLNV102
RHCE2PHEA153LHHB3GLNV102
RHCZPHEA153LHHG13VALV78
RHCZPHEA153LHOGLYV98
RHCZPHEA153LHCMETV101
RHCZPHEA153LHCBMETV101
RHCZPHEA153LHHB2METV101
RHCZPHEA153LHHB3METV101
RHCZPHEA153LHNGLNV102
RHCZPHEA153LHCAGLNV102
RHCZPHEA153LHCBGLNV102
RHCZPHEA153LHHGLNV102
RHCZPHEA153LHHAGLNV102
RHCZPHEA153LHHB2GLNV102
RHCZPHEA153LHHB3GLNV102
RHCZPHEA153LHHG3GLNV102
RHNVALA154LHHG22THRV77
RHCAVALA154LHOTHRV77
RHCAVALA154LHHG22THRV77
RHCAVALA154LHHG2PROV81
RHCBVALA154LHCTHRV77
RHCBVALA154LHOTHRV77
RHCBVALA154LHCG2THRV77
RHCBVALA154LHHG21THRV77
RHCBVALA154LHHG22THRV77
RHCBVALA154LHHG23THRV77
RHCBVALA154LHCGPROV81
RHCBVALA154LHHG2PROV81
RHOVALA154LHHB2PROV81
RHCG1VALA154LHOTHRV77
RHCG1VALA154LHCG2THRV77
RHCG1VALA154LHHG22THRV77
RHCG1VALA154LHHG23THRV77
RHCG1VALA154LHCBPROV81
RHCG1VALA154LHCGPROV81
RHCG1VALA154LHHB2PROV81
RHCG1VALA154LHHB3PROV81
RHCG1VALA154LHHG2PROV81
RHCG1VALA154LHHG3PROV81
RHCG2VALA154LHCATHRV77
RHCG2VALA154LHCTHRV77
RHCG2VALA154LHCBTHRV77
RHCG2VALA154LHOTHRV77
RHCG2VALA154LHCG2THRV77
RHCG2VALA154LHHATHRV77
RHCG2VALA154LHHBTHRV77
RHCG2VALA154LHHG21THRV77
RHCG2VALA154LHHG22THRV77
RHCG2VALA154LHHG23THRV77
RHCG2VALA154LHNVALV78
RHCG2VALA154LHCAVALV78
RHCG2VALA154LHHAVALV78
RHCG2VALA154LHCGPROV81
RHCG2VALA154LHHG2PROV81
RHCG2VALA154LHHD3PROV81
RHCILEA157LHOE2GLUV85
RHCBILEA157LHHB2LYSV82
RHCBILEA157LHHD3LYSV82
RHOILEA157LHHZ3LYSV82
RHOILEA157LHCDGLUV85
RHOILEA157LHOE1GLUV85
RHOILEA157LHOE2GLUV85
RHCG1ILEA157LHHB2LYSV82
RHCG1ILEA157LHHD3LYSV82
RHCG2ILEA157LHNLYSV82
RHCG2ILEA157LHCALYSV82
RHCG2ILEA157LHCBLYSV82
RHCG2ILEA157LHCGLYSV82
RHCG2ILEA157LHCDLYSV82
RHCG2ILEA157LHHALYSV82
RHCG2ILEA157LHHB2LYSV82
RHCG2ILEA157LHHD2LYSV82
RHCG2ILEA157LHHD3LYSV82
RHCG2ILEA157LHHZ3LYSV82
RHCG2ILEA157LHOE2GLUV85
RHCD1ILEA157LHHB2LYSV82
RHCD1ILEA157LHHD3LYSV82
RHCD1ILEA157LSHD11ILEV94
RHCD1ILEA157LSHD13ILEV94
RHCD1ILEA157LHHB3GLNV102
RHCD1ILEA157LHHE21GLNV102
RHCILEA160LHOE1GLUV85
RHOILEA160LHOE1GLUV85
RHNSERA161LHHZ3LYSV82
RHNSERA161LHCDGLUV85
RHNSERA161LHOE1GLUV85
RHNSERA161LHOE2GLUV85
RHCASERA161LHNZLYSV82
RHCASERA161LHHZ1LYSV82
RHCASERA161LHHZ2LYSV82
RHCASERA161LHHZ3LYSV82
RHCASERA161LHCGGLUV85
RHCASERA161LHCDGLUV85
RHCASERA161LHOE1GLUV85
RHCASERA161LHOE2GLUV85
RHCASERA161LHHG2GLUV85
RHCASERA161LHHG3GLUV85
RHCSERA161LHCGGLUV85
RHCSERA161LHCDGLUV85
RHCSERA161LHOE1GLUV85
RHCSERA161LHOE2GLUV85
RHCSERA161LHHG2GLUV85
RHCSERA161LHHG3GLUV85
RHCSERA161L-HG12VALV89
RHCBSERA161LHNZLYSV82
RHCBSERA161LHHD2LYSV82
RHCBSERA161LHHZ1LYSV82
RHCBSERA161LHHZ2LYSV82
RHCBSERA161LHHZ3LYSV82
RHCBSERA161LHCBGLUV85
RHCBSERA161LHCGGLUV85
RHCBSERA161LHCDGLUV85
RHCBSERA161LHOE1GLUV85
RHCBSERA161LHOE2GLUV85
RHCBSERA161LHHB2GLUV85
RHCBSERA161LHHB3GLUV85
RHCBSERA161LHHG2GLUV85
RHCBSERA161LHHG3GLUV85
RHOSERA161LHCGGLUV85
RHOSERA161LHCDGLUV85
RHOSERA161LHOE1GLUV85
RHOSERA161LHHG2GLUV85
RHOSERA161LHHG3GLUV85
RHOSERA161L-CG1VALV89
RHOSERA161L-HBVALV89
RHOSERA161L-HG11VALV89
RHOSERA161L-HG12VALV89
RHOSERA161L-HG13VALV89
RHOSERA161L-HG23VALV89
RHOGSERA161LHCDLYSV82
RHOGSERA161LHCELYSV82
RHOGSERA161LHNZLYSV82
RHOGSERA161LHHALYSV82
RHOGSERA161LHHD2LYSV82
RHOGSERA161LHHD3LYSV82
RHOGSERA161LHHE3LYSV82
RHOGSERA161LHHZ1LYSV82
RHOGSERA161LHHZ2LYSV82
RHOGSERA161LHHZ3LYSV82
RHOGSERA161LHCBGLUV85
RHOGSERA161LHCGGLUV85
RHOGSERA161LHCDGLUV85
RHOGSERA161LHOE1GLUV85
RHOGSERA161LHOE2GLUV85
RHOGSERA161LHHB2GLUV85
RHOGSERA161LHHB3GLUV85
RHOGSERA161LHHG2GLUV85
RHOGSERA161LHHG3GLUV85
RHNLEUA162LHCDGLUV85
RHNLEUA162LHOE1GLUV85
RHNLEUA162LHHG3GLUV85
RHNLEUA162L-HG12VALV89
R-CLEUA164L-HB2TYRV91
R-CBLEUA164LSOG1THRV93
R-CBLEUA164LSHG1THRV93
R-OLEUA164L-HB2TYRV91
R-CGLEUA164LSOG1THRV93
R-CGLEUA164LSHG1THRV93
R-CD1LEUA164LSCATHRV93
R-CD1LEUA164LSCTHRV93
R-CD1LEUA164LSCBTHRV93
R-CD1LEUA164LSOTHRV93
R-CD1LEUA164LSOG1THRV93
R-CD1LEUA164LSHBTHRV93
R-CD1LEUA164LSHG1THRV93
R-CD1LEUA164LSHAILEV94
R-CD2LEUA164LSOG1THRV93
R-NPROA165L-HB2TYRV91
R-NPROA165L-HD2TYRV91
R-CAPROA165L-CBTYRV91
R-CAPROA165L-CGTYRV91
R-CAPROA165L-CD2TYRV91
R-CAPROA165L-HTYRV91
R-CAPROA165L-HB2TYRV91
R-CAPROA165L-HD2TYRV91
R-CPROA165L-CD2TYRV91
R-CPROA165L-HB2TYRV91
R-CPROA165L-HD2TYRV91
R-CBPROA165L-HBVALV89
R-CBPROA165L-HGLUV90
R-CBPROA165L-HB2GLUV90
R-CBPROA165L-NTYRV91
R-CBPROA165L-CBTYRV91
R-CBPROA165L-CD2TYRV91
R-CBPROA165L-HTYRV91
R-CBPROA165L-HB2TYRV91
R-CBPROA165L-HD2TYRV91
R-OPROA165L-CD2TYRV91
R-OPROA165L-CE2TYRV91
R-OPROA165L-HD2TYRV91
R-OPROA165L-HE2TYRV91
R-CGPROA165L-CBVALV89
R-CGPROA165L-CG1VALV89
R-CGPROA165L-CG2VALV89
R-CGPROA165L-HBVALV89
R-CGPROA165L-HG11VALV89
R-CGPROA165L-HG12VALV89
R-CGPROA165L-HG23VALV89
R-CGPROA165L-OTYRV91
R-CGPROA165L-HTYRV91
R-CGPROA165L-HB2TYRV91
R-CGPROA165L-HD2TYRV91
R-CDPROA165L-HBVALV89
R-CDPROA165L-HG12VALV89
R-CDPROA165L-HB2TYRV91

 - 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