BLASTX nr result
ID: Forsythia21_contig00054741
seq
BLASTX 2.2.25 [Feb-01-2011]
Reference: Altschul, Stephen F., Thomas L. Madden, Alejandro A. Schaffer,
Jinghui Zhang, Zheng Zhang, Webb Miller, and David J. Lipman (1997),
"Gapped BLAST and PSI-BLAST: a new generation of protein database search
programs", Nucleic Acids Res. 25:3389-3402.
Query= Forsythia21_contig00054741
(303 letters)
Database: ./nr
69,698,275 sequences; 24,982,196,650 total letters
Searching..................................................done
Score E
Sequences producing significant alignments: (bits) Value
ref|XP_010093149.1| L-ascorbate oxidase-like protein [Morus nota... 197 2e-48
ref|XP_008449913.1| PREDICTED: L-ascorbate oxidase homolog isofo... 192 1e-46
ref|XP_008438536.1| PREDICTED: L-ascorbate oxidase homolog [Cucu... 191 1e-46
ref|XP_008449912.1| PREDICTED: L-ascorbate oxidase homolog isofo... 191 2e-46
ref|XP_010093150.1| L-ascorbate oxidase-like protein [Morus nota... 190 3e-46
ref|XP_004137383.1| PREDICTED: L-ascorbate oxidase homolog [Cucu... 190 3e-46
ref|XP_011654310.1| PREDICTED: L-ascorbate oxidase homolog, part... 190 4e-46
ref|XP_011653509.1| PREDICTED: L-ascorbate oxidase homolog [Cucu... 189 5e-46
ref|XP_010044910.1| PREDICTED: L-ascorbate oxidase homolog [Euca... 189 6e-46
ref|XP_011653513.1| PREDICTED: L-ascorbate oxidase homolog [Cucu... 188 1e-45
ref|XP_010034521.1| PREDICTED: L-ascorbate oxidase homolog [Euca... 187 2e-45
ref|XP_008449954.1| PREDICTED: L-ascorbate oxidase homolog [Cucu... 187 2e-45
ref|XP_010034522.1| PREDICTED: L-ascorbate oxidase homolog [Euca... 186 4e-45
ref|XP_010044914.1| PREDICTED: L-ascorbate oxidase homolog [Euca... 184 2e-44
ref|XP_007208287.1| hypothetical protein PRUPE_ppa003715mg [Prun... 184 2e-44
ref|XP_012080858.1| PREDICTED: L-ascorbate oxidase homolog [Jatr... 184 3e-44
ref|XP_010271079.1| PREDICTED: L-ascorbate oxidase homolog [Nelu... 183 3e-44
ref|XP_002523382.1| multicopper oxidase, putative [Ricinus commu... 182 6e-44
ref|XP_009339220.1| PREDICTED: L-ascorbate oxidase homolog [Pyru... 182 8e-44
ref|XP_010247849.1| PREDICTED: L-ascorbate oxidase homolog isofo... 181 1e-43
>ref|XP_010093149.1| L-ascorbate oxidase-like protein [Morus notabilis]
gi|587863871|gb|EXB53608.1| L-ascorbate oxidase-like
protein [Morus notabilis]
Length = 550
Score = 197 bits (502), Expect = 2e-48
Identities = 92/100 (92%), Positives = 98/100 (98%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHLAGYSFFAV+IEPGRW PE+RKNYNLLDAVSRHTIQV+PKSYAA+LLTFDNAGMW
Sbjct: 437 LQSWHLAGYSFFAVSIEPGRWRPEKRKNYNLLDAVSRHTIQVYPKSYAAVLLTFDNAGMW 496
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSELTE RYLGQQLYISVLSPARSLRDEYN+PDNALLC
Sbjct: 497 NLRSELTENRYLGQQLYISVLSPARSLRDEYNMPDNALLC 536
>ref|XP_008449913.1| PREDICTED: L-ascorbate oxidase homolog isoform X2 [Cucumis melo]
Length = 554
Score = 192 bits (487), Expect = 1e-46
Identities = 91/100 (91%), Positives = 94/100 (94%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFFAVAIEPGRWSPE+R NYNLLDAVSRHTIQVFP S+AAILLTFDNAGMW
Sbjct: 441 LQSWHLDGYSFFAVAIEPGRWSPEKRSNYNLLDAVSRHTIQVFPNSWAAILLTFDNAGMW 500
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSELTE RYLG QLYISVLSPARSLRDEYNIPDN LLC
Sbjct: 501 NLRSELTENRYLGSQLYISVLSPARSLRDEYNIPDNTLLC 540
>ref|XP_008438536.1| PREDICTED: L-ascorbate oxidase homolog [Cucumis melo]
Length = 553
Score = 191 bits (486), Expect = 1e-46
Identities = 91/100 (91%), Positives = 94/100 (94%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFFAVAIEPGRWSPE+RKNYNLLDAVSRHTIQVFPKS+ AILLT DNAGMW
Sbjct: 440 LQSWHLDGYSFFAVAIEPGRWSPEKRKNYNLLDAVSRHTIQVFPKSWGAILLTLDNAGMW 499
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSELTE RYLGQQLY SV SPARSLRDEYNIPDNALLC
Sbjct: 500 NLRSELTENRYLGQQLYFSVQSPARSLRDEYNIPDNALLC 539
>ref|XP_008449912.1| PREDICTED: L-ascorbate oxidase homolog isoform X1 [Cucumis melo]
Length = 554
Score = 191 bits (484), Expect = 2e-46
Identities = 90/100 (90%), Positives = 95/100 (95%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFFAVAIEPGRWSPE+R NYNLLDAVSRHTIQVFP S+AAILLTFDNAGMW
Sbjct: 441 LQSWHLDGYSFFAVAIEPGRWSPEKRSNYNLLDAVSRHTIQVFPNSWAAILLTFDNAGMW 500
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSELTE RYLGQQLY+SVLSPARSLRDEYNIPD+ LLC
Sbjct: 501 NLRSELTENRYLGQQLYMSVLSPARSLRDEYNIPDHTLLC 540
>ref|XP_010093150.1| L-ascorbate oxidase-like protein [Morus notabilis]
gi|587863872|gb|EXB53609.1| L-ascorbate oxidase-like
protein [Morus notabilis]
Length = 535
Score = 190 bits (483), Expect = 3e-46
Identities = 89/100 (89%), Positives = 96/100 (96%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+Q+WHL GYSFFAVAIEPGRWSP++R YNLLDAVSRHTIQVFPKS+AAI+LTFDNAGMW
Sbjct: 422 LQTWHLDGYSFFAVAIEPGRWSPDKRSRYNLLDAVSRHTIQVFPKSWAAIMLTFDNAGMW 481
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSELTERRYLGQQLYISV SPARSLRDEYN+PDNALLC
Sbjct: 482 NLRSELTERRYLGQQLYISVQSPARSLRDEYNMPDNALLC 521
>ref|XP_004137383.1| PREDICTED: L-ascorbate oxidase homolog [Cucumis sativus]
Length = 553
Score = 190 bits (483), Expect = 3e-46
Identities = 89/100 (89%), Positives = 94/100 (94%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFFAVA+EPGRWSPE+RKNYNLLDAVSRHTIQVFPKS+AAILLT DNAGMW
Sbjct: 440 LQSWHLDGYSFFAVAVEPGRWSPEKRKNYNLLDAVSRHTIQVFPKSWAAILLTLDNAGMW 499
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSELTE RYLGQQ+Y SV SPARSLRDEYNIPDN LLC
Sbjct: 500 NLRSELTENRYLGQQMYFSVQSPARSLRDEYNIPDNTLLC 539
>ref|XP_011654310.1| PREDICTED: L-ascorbate oxidase homolog, partial [Cucumis sativus]
Length = 337
Score = 190 bits (482), Expect = 4e-46
Identities = 90/100 (90%), Positives = 94/100 (94%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFFAVAIEPGRWSPE+R NYNLLDAVSRHTIQVFPKS+AAILLTFDNAGMW
Sbjct: 224 LQSWHLDGYSFFAVAIEPGRWSPEKRSNYNLLDAVSRHTIQVFPKSWAAILLTFDNAGMW 283
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSELTE RYLGQQLY+SV SPARSLRDEYNIPD LLC
Sbjct: 284 NLRSELTENRYLGQQLYMSVQSPARSLRDEYNIPDKTLLC 323
>ref|XP_011653509.1| PREDICTED: L-ascorbate oxidase homolog [Cucumis sativus]
Length = 553
Score = 189 bits (481), Expect = 5e-46
Identities = 90/100 (90%), Positives = 94/100 (94%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFFAVAIEPGRWSPE+R NYNLLDAVSRHTIQVFP S+AAILLTFDNAGMW
Sbjct: 440 LQSWHLDGYSFFAVAIEPGRWSPEKRSNYNLLDAVSRHTIQVFPNSWAAILLTFDNAGMW 499
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSEL E RYLGQQLYISVLSPARSLRDEYNIPD+ LLC
Sbjct: 500 NLRSELIENRYLGQQLYISVLSPARSLRDEYNIPDHTLLC 539
>ref|XP_010044910.1| PREDICTED: L-ascorbate oxidase homolog [Eucalyptus grandis]
gi|629122543|gb|KCW87033.1| hypothetical protein
EUGRSUZ_B03580 [Eucalyptus grandis]
Length = 551
Score = 189 bits (480), Expect = 6e-46
Identities = 87/100 (87%), Positives = 97/100 (97%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFFAVA+EPGRW+PE+RK+YNLLDAVSRHT+QVFPKS+AAI+LTFDNAGMW
Sbjct: 438 IQSWHLDGYSFFAVAVEPGRWTPEKRKSYNLLDAVSRHTVQVFPKSWAAIMLTFDNAGMW 497
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSEL ERRYLGQ+LYISVLSP RSLRDEYNIPD+ALLC
Sbjct: 498 NLRSELAERRYLGQELYISVLSPERSLRDEYNIPDDALLC 537
>ref|XP_011653513.1| PREDICTED: L-ascorbate oxidase homolog [Cucumis sativus]
Length = 554
Score = 188 bits (477), Expect = 1e-45
Identities = 89/100 (89%), Positives = 93/100 (93%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFFAVAIEPGRWSPE+R NYNLLDAVSRHTIQVFPKS+AAILLTFDNAGMW
Sbjct: 441 LQSWHLDGYSFFAVAIEPGRWSPEKRANYNLLDAVSRHTIQVFPKSWAAILLTFDNAGMW 500
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSEL E RYLG QLY+SV SPARSLRDEYNIPDN LLC
Sbjct: 501 NLRSELLENRYLGSQLYVSVPSPARSLRDEYNIPDNTLLC 540
>ref|XP_010034521.1| PREDICTED: L-ascorbate oxidase homolog [Eucalyptus grandis]
gi|629085942|gb|KCW52299.1| hypothetical protein
EUGRSUZ_J01719 [Eucalyptus grandis]
Length = 551
Score = 187 bits (476), Expect = 2e-45
Identities = 86/100 (86%), Positives = 96/100 (96%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFFAVAIEPGRW+P++RKNYNLLDAVSRHT+ VFPKS+AAI+LTFDNAG+W
Sbjct: 438 IQSWHLDGYSFFAVAIEPGRWTPDKRKNYNLLDAVSRHTVPVFPKSWAAIMLTFDNAGIW 497
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSEL ERRYLGQQ+Y+SVLSP RSLRDEYNIPDNALLC
Sbjct: 498 NLRSELLERRYLGQQMYLSVLSPERSLRDEYNIPDNALLC 537
>ref|XP_008449954.1| PREDICTED: L-ascorbate oxidase homolog [Cucumis melo]
Length = 446
Score = 187 bits (475), Expect = 2e-45
Identities = 88/100 (88%), Positives = 94/100 (94%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFFAVAIEPGRW+PE+R +YNLLDAVSRHTIQVFPKS+AAILLTFDNAGMW
Sbjct: 333 LQSWHLDGYSFFAVAIEPGRWTPEKRSDYNLLDAVSRHTIQVFPKSWAAILLTFDNAGMW 392
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSEL E RYLGQQLY+SV SPARSLRDEYNIPDN LLC
Sbjct: 393 NLRSELAENRYLGQQLYMSVQSPARSLRDEYNIPDNTLLC 432
>ref|XP_010034522.1| PREDICTED: L-ascorbate oxidase homolog [Eucalyptus grandis]
gi|629085943|gb|KCW52300.1| hypothetical protein
EUGRSUZ_J01720 [Eucalyptus grandis]
Length = 552
Score = 186 bits (473), Expect = 4e-45
Identities = 85/100 (85%), Positives = 96/100 (96%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFFAVA+EPGRW+PE+RK+YNLLDAVSRHT+QVFPKS+AAI+LTFDNAGMW
Sbjct: 439 IQSWHLDGYSFFAVAVEPGRWTPEKRKSYNLLDAVSRHTVQVFPKSWAAIMLTFDNAGMW 498
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSEL ERRYLGQ++YISVLSP RSLRDEYN+PDNA LC
Sbjct: 499 NLRSELLERRYLGQEMYISVLSPERSLRDEYNLPDNAPLC 538
>ref|XP_010044914.1| PREDICTED: L-ascorbate oxidase homolog [Eucalyptus grandis]
gi|629122544|gb|KCW87034.1| hypothetical protein
EUGRSUZ_B03581 [Eucalyptus grandis]
Length = 552
Score = 184 bits (468), Expect = 2e-44
Identities = 86/100 (86%), Positives = 95/100 (95%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFF VAIEPGRW+PE+RK+YNLLDAVSRHTIQVFPKS+AAI+LTFDNAGMW
Sbjct: 439 VQSWHLDGYSFFGVAIEPGRWTPEKRKSYNLLDAVSRHTIQVFPKSWAAIMLTFDNAGMW 498
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSEL ERRYLGQ+LYISVLSP RSLRDEYN+PD+A LC
Sbjct: 499 NLRSELAERRYLGQELYISVLSPERSLRDEYNMPDDAELC 538
>ref|XP_007208287.1| hypothetical protein PRUPE_ppa003715mg [Prunus persica]
gi|462403929|gb|EMJ09486.1| hypothetical protein
PRUPE_ppa003715mg [Prunus persica]
Length = 554
Score = 184 bits (467), Expect = 2e-44
Identities = 84/100 (84%), Positives = 95/100 (95%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSW+L GYSFFAVAIEPGRW+PE+RKNYNLLD VSRHTIQVFPKS+AAI+LTFDNAGMW
Sbjct: 439 IQSWNLDGYSFFAVAIEPGRWAPEKRKNYNLLDGVSRHTIQVFPKSWAAIMLTFDNAGMW 498
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
N+RSE +ERRYLGQQ Y+SVLSPARSLRDEYN+PDN L+C
Sbjct: 499 NVRSEQSERRYLGQQFYVSVLSPARSLRDEYNLPDNTLVC 538
>ref|XP_012080858.1| PREDICTED: L-ascorbate oxidase homolog [Jatropha curcas]
gi|643720144|gb|KDP30647.1| hypothetical protein
JCGZ_16212 [Jatropha curcas]
Length = 551
Score = 184 bits (466), Expect = 3e-44
Identities = 84/100 (84%), Positives = 94/100 (94%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFFAVA+EPG W+PE+R NYNLLDAVSRHT+QV+PKS+AAILLTFDNAGMW
Sbjct: 438 IQSWHLDGYSFFAVAVEPGTWTPEKRNNYNLLDAVSRHTVQVYPKSWAAILLTFDNAGMW 497
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
N+RSE+ E+ YLGQQLY SVLSPARSLRDEYNIPDNALLC
Sbjct: 498 NIRSEIWEKTYLGQQLYASVLSPARSLRDEYNIPDNALLC 537
>ref|XP_010271079.1| PREDICTED: L-ascorbate oxidase homolog [Nelumbo nucifera]
Length = 552
Score = 183 bits (465), Expect = 3e-44
Identities = 85/100 (85%), Positives = 93/100 (93%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFFAV IEPG+W+PERRKNYNLLDAVSRHT+QVFPKS+AAILLTFDNAGMW
Sbjct: 439 IQSWHLDGYSFFAVGIEPGKWTPERRKNYNLLDAVSRHTVQVFPKSWAAILLTFDNAGMW 498
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSE+ +R YLGQQLY+SVLSPARSLRDEYNIPD LC
Sbjct: 499 NLRSEIWDRFYLGQQLYVSVLSPARSLRDEYNIPDGTKLC 538
>ref|XP_002523382.1| multicopper oxidase, putative [Ricinus communis]
gi|223537332|gb|EEF38961.1| multicopper oxidase,
putative [Ricinus communis]
Length = 551
Score = 182 bits (463), Expect = 6e-44
Identities = 85/100 (85%), Positives = 93/100 (93%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFF VA+EPG W+PE+RKNYNLLDAVSR T+QVFPKS+AAILLTFDNAGMW
Sbjct: 438 IQSWHLDGYSFFVVAVEPGTWTPEKRKNYNLLDAVSRTTVQVFPKSWAAILLTFDNAGMW 497
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
N+RSE+ ER YLGQQLY SVLSPARSLRDEYNIPDNALLC
Sbjct: 498 NIRSEMWERTYLGQQLYASVLSPARSLRDEYNIPDNALLC 537
>ref|XP_009339220.1| PREDICTED: L-ascorbate oxidase homolog [Pyrus x bretschneideri]
Length = 552
Score = 182 bits (462), Expect = 8e-44
Identities = 83/100 (83%), Positives = 93/100 (93%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFFAVAIEPGRW+PE+RKNYNLLD VSRHTIQVFPKS+AA++LTFDNAGMW
Sbjct: 439 IQSWHLDGYSFFAVAIEPGRWTPEKRKNYNLLDGVSRHTIQVFPKSWAAVMLTFDNAGMW 498
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
N+RSE ERRYLGQQ Y+SVLSPARSLRDEYN+P+ A LC
Sbjct: 499 NVRSEQPERRYLGQQFYVSVLSPARSLRDEYNLPETAQLC 538
>ref|XP_010247849.1| PREDICTED: L-ascorbate oxidase homolog isoform X3 [Nelumbo
nucifera]
Length = 553
Score = 181 bits (460), Expect = 1e-43
Identities = 84/100 (84%), Positives = 92/100 (92%)
Frame = -2
Query: 302 MQSWHLAGYSFFAVAIEPGRWSPERRKNYNLLDAVSRHTIQVFPKSYAAILLTFDNAGMW 123
+QSWHL GYSFFAV IEPG+W+PERRKNYNLLDAVSRHT+QVFP S+AAILLTFDNAGMW
Sbjct: 440 IQSWHLDGYSFFAVGIEPGKWTPERRKNYNLLDAVSRHTVQVFPNSWAAILLTFDNAGMW 499
Query: 122 NLRSELTERRYLGQQLYISVLSPARSLRDEYNIPDNALLC 3
NLRSE+ +R YLGQQLY+SVLSPARSLRDEYNIPD LC
Sbjct: 500 NLRSEIWDRFYLGQQLYVSVLSPARSLRDEYNIPDGTKLC 539