BLASTX nr result
ID: Cornus23_contig00045644
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= Cornus23_contig00045644
(325 letters)
Database: ./nr
77,306,371 sequences; 28,104,191,420 total letters
Searching..................................................done
Score E
Sequences producing significant alignments: (bits) Value
gb|ABJ80958.1| Hsp90, partial [Apusomonas proboscidea] 161 2e-37
dbj|BAF75058.1| heat shock protein [Prymnesium parvum] 158 2e-36
ref|XP_004254906.1| heat shock protein 81-1, putative [Entamoeba... 157 2e-36
dbj|BAL45643.1| heat shock protein 90 [Ulva pertusa] gi|37194044... 157 3e-36
gb|KOO22176.1| heat shock protein 90 [Chrysochromulina sp. CCMP291] 157 4e-36
ref|XP_005777261.1| hypothetical protein EMIHUDRAFT_443778 [Emil... 157 4e-36
ref|XP_005764796.1| hypothetical protein EMIHUDRAFT_437342 [Emil... 157 4e-36
dbj|BAK03331.1| predicted protein [Hordeum vulgare subsp. vulgare] 157 4e-36
ref|XP_653132.1| heat shock protein 90 [Entamoeba histolytica HM... 156 5e-36
ref|XP_653162.1| heat shock protein 90 [Entamoeba histolytica HM... 156 5e-36
ref|XP_008855466.1| heat shock protein 90, putative [Entamoeba n... 156 5e-36
ref|XP_001735351.1| heat shock protein 81-1 [Entamoeba dispar SA... 156 5e-36
ref|XP_001740319.1| heat shock protein [Entamoeba dispar SAW760]... 156 5e-36
dbj|BAD83620.1| cytosolic-type hsp90 [Entamoeba histolytica] 156 5e-36
ref|XP_012090182.1| PREDICTED: heat shock protein 83 [Jatropha c... 155 8e-36
ref|XP_006828794.1| PREDICTED: heat shock protein 83 [Amborella ... 155 8e-36
ref|XP_002947115.1| hypothetical protein VOLCADRAFT_73112 [Volvo... 155 8e-36
ref|XP_001437360.1| hypothetical protein [Paramecium tetraurelia... 155 8e-36
gb|AAY67878.1| heat shock protein 90 [Pseudourostyla cristata] 155 8e-36
gb|AIR09397.1| HSP90, partial [Trachelomonas abrupta] 155 1e-35
>gb|ABJ80958.1| Hsp90, partial [Apusomonas proboscidea]
Length = 635
Score = 161 bits (407), Expect = 2e-37
Identities = 77/95 (81%), Positives = 88/95 (92%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PCVLVTGEYGW+ANMERIMKAQALRDSSMSSYM SKKT+E+NP HPIV LR RA+ D+
Sbjct: 541 PCVLVTGEYGWSANMERIMKAQALRDSSMSSYMSSKKTMEVNPFHPIVIALRQRADEDRN 600
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHR 4
SKTVKDL++LLFETS+L+SGFSLD+PASFA+RIHR
Sbjct: 601 SKTVKDLIFLLFETSMLTSGFSLDEPASFASRIHR 635
>dbj|BAF75058.1| heat shock protein [Prymnesium parvum]
Length = 150
Score = 158 bits (399), Expect = 2e-36
Identities = 77/96 (80%), Positives = 87/96 (90%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PCVLVTGEYGWTANMERIM+AQALRDSSMSSYM SKKT+E+NP H I+ EL+ +A ADK
Sbjct: 19 PCVLVTGEYGWTANMERIMRAQALRDSSMSSYMASKKTMEINPKHSIMKELKAKAAADKG 78
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDLV+LLFETSLL+SGFSLD+PA+FA RIHRM
Sbjct: 79 DKTVKDLVHLLFETSLLTSGFSLDEPATFAGRIHRM 114
>ref|XP_004254906.1| heat shock protein 81-1, putative [Entamoeba invadens IP1]
gi|440295222|gb|ELP88135.1| heat shock protein 81-1,
putative [Entamoeba invadens IP1]
Length = 778
Score = 157 bits (398), Expect = 2e-36
Identities = 77/96 (80%), Positives = 85/96 (88%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PC LVTGEYGW+ANMERIMKAQALRD+SMS+YMVSKKTLELNP HPIV EL+ R + D
Sbjct: 644 PCALVTGEYGWSANMERIMKAQALRDNSMSTYMVSKKTLELNPDHPIVEELKKRVHTDNS 703
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDLV LLFET+LLSSGFSLDDPA+FA RI+RM
Sbjct: 704 DKTVKDLVVLLFETALLSSGFSLDDPAAFAGRIYRM 739
>dbj|BAL45643.1| heat shock protein 90 [Ulva pertusa] gi|371940446|dbj|BAL45645.1|
heat shock protein 90 [Ulva pertusa]
Length = 705
Score = 157 bits (397), Expect = 3e-36
Identities = 78/96 (81%), Positives = 87/96 (90%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PCVLVTGEYGW+ANMERIMKAQALRD+SMSSYM SKKTLE+NP + IV ELR R+ ADK
Sbjct: 571 PCVLVTGEYGWSANMERIMKAQALRDNSMSSYMSSKKTLEINPENGIVEELRKRSEADKS 630
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDLV LLFET+LLSSGFSLD+PA+FA+RIHRM
Sbjct: 631 DKTVKDLVLLLFETALLSSGFSLDEPATFASRIHRM 666
>gb|KOO22176.1| heat shock protein 90 [Chrysochromulina sp. CCMP291]
Length = 443
Score = 157 bits (396), Expect = 4e-36
Identities = 76/96 (79%), Positives = 87/96 (90%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PCVLVTGEYGWTANMERIM+AQALRD+SMSSYM SKKT+E+NP H I+ EL+ +A ADK
Sbjct: 312 PCVLVTGEYGWTANMERIMRAQALRDNSMSSYMASKKTMEINPKHSIMKELKAKAAADKG 371
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDLV+LLFETSLL+SGFSLD+PA+FA RIHRM
Sbjct: 372 DKTVKDLVHLLFETSLLTSGFSLDEPATFAGRIHRM 407
>ref|XP_005777261.1| hypothetical protein EMIHUDRAFT_443778 [Emiliania huxleyi CCMP1516]
gi|551616443|ref|XP_005789065.1| hypothetical protein
EMIHUDRAFT_362359 [Emiliania huxleyi CCMP1516]
gi|485629499|gb|EOD24832.1| hypothetical protein
EMIHUDRAFT_443778 [Emiliania huxleyi CCMP1516]
gi|485642568|gb|EOD36636.1| hypothetical protein
EMIHUDRAFT_362359 [Emiliania huxleyi CCMP1516]
Length = 704
Score = 157 bits (396), Expect = 4e-36
Identities = 76/96 (79%), Positives = 87/96 (90%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PCVLVTGEYGWTANMERIM+AQALRDSSMSSYM SKKT+E+NP H I+ EL+ ++ ADK
Sbjct: 573 PCVLVTGEYGWTANMERIMRAQALRDSSMSSYMASKKTMEINPKHSIMKELKAKSAADKG 632
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDLV+LLFETSLL+SGFSLD+PA+FA RIHRM
Sbjct: 633 DKTVKDLVHLLFETSLLTSGFSLDEPATFAGRIHRM 668
>ref|XP_005764796.1| hypothetical protein EMIHUDRAFT_437342 [Emiliania huxleyi CCMP1516]
gi|551622669|ref|XP_005791663.1| hypothetical protein
EMIHUDRAFT_439906 [Emiliania huxleyi CCMP1516]
gi|485614585|gb|EOD12367.1| hypothetical protein
EMIHUDRAFT_437342 [Emiliania huxleyi CCMP1516]
gi|485645621|gb|EOD39234.1| hypothetical protein
EMIHUDRAFT_439906 [Emiliania huxleyi CCMP1516]
Length = 688
Score = 157 bits (396), Expect = 4e-36
Identities = 76/96 (79%), Positives = 87/96 (90%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PCVLVTGEYGWTANMERIM+AQALRDSSMSSYM SKKT+E+NP H I+ EL+ ++ ADK
Sbjct: 557 PCVLVTGEYGWTANMERIMRAQALRDSSMSSYMASKKTMEINPKHSIMKELKAKSAADKG 616
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDLV+LLFETSLL+SGFSLD+PA+FA RIHRM
Sbjct: 617 DKTVKDLVHLLFETSLLTSGFSLDEPATFAGRIHRM 652
>dbj|BAK03331.1| predicted protein [Hordeum vulgare subsp. vulgare]
Length = 700
Score = 157 bits (396), Expect = 4e-36
Identities = 72/96 (75%), Positives = 89/96 (92%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PC LVTGEYGW+ANMERIMKAQALRDSSMS+YMVSKKT+E+NP HPIVAEL+ +++ D+
Sbjct: 567 PCALVTGEYGWSANMERIMKAQALRDSSMSNYMVSKKTMEINPDHPIVAELKKKSDQDRS 626
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTV+DL++LLF+T+LL+SGFSLD+P+SFA RIHRM
Sbjct: 627 DKTVRDLIWLLFDTALLASGFSLDEPSSFATRIHRM 662
>ref|XP_653132.1| heat shock protein 90 [Entamoeba histolytica HM-1:IMSS]
gi|56470060|gb|EAL47746.1| heat shock protein 90,
putative [Entamoeba histolytica HM-1:IMSS]
gi|449704282|gb|EMD44554.1| heat shock protein, putative
[Entamoeba histolytica KU27] gi|459662577|gb|EMH77453.1|
heat shock protein 90, putative [Entamoeba histolytica
HM-1:IMSS-B]
Length = 718
Score = 156 bits (395), Expect = 5e-36
Identities = 76/96 (79%), Positives = 85/96 (88%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PC LVTGEYGW+ANMERIMKAQALRD+SMS+YMVSKKTLE+NP HPIV ELR R + D
Sbjct: 587 PCALVTGEYGWSANMERIMKAQALRDNSMSTYMVSKKTLEINPDHPIVQELRKRVHTDNS 646
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDLV LLFET+LLSSGFSLD+PA+FA RI+RM
Sbjct: 647 DKTVKDLVVLLFETALLSSGFSLDEPAAFAGRIYRM 682
>ref|XP_653162.1| heat shock protein 90 [Entamoeba histolytica HM-1:IMSS]
gi|56470093|gb|EAL47778.1| heat shock protein 90,
putative [Entamoeba histolytica HM-1:IMSS]
gi|472460346|gb|EMS13969.1| heat shock protein 90,
putative [Entamoeba histolytica HM-3:IMSS]
gi|480524598|gb|ENY63588.1| heat shock protein 90,
putative [Entamoeba histolytica HM-1:IMSS-A]
Length = 718
Score = 156 bits (395), Expect = 5e-36
Identities = 76/96 (79%), Positives = 85/96 (88%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PC LVTGEYGW+ANMERIMKAQALRD+SMS+YMVSKKTLE+NP HPIV ELR R + D
Sbjct: 587 PCALVTGEYGWSANMERIMKAQALRDNSMSTYMVSKKTLEINPDHPIVQELRKRVHTDNS 646
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDLV LLFET+LLSSGFSLD+PA+FA RI+RM
Sbjct: 647 DKTVKDLVVLLFETALLSSGFSLDEPAAFAGRIYRM 682
>ref|XP_008855466.1| heat shock protein 90, putative [Entamoeba nuttalli P19]
gi|407043858|gb|EKE42200.1| heat shock protein 90,
putative [Entamoeba nuttalli P19]
Length = 718
Score = 156 bits (395), Expect = 5e-36
Identities = 76/96 (79%), Positives = 85/96 (88%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PC LVTGEYGW+ANMERIMKAQALRD+SMS+YMVSKKTLE+NP HPIV ELR R + D
Sbjct: 587 PCALVTGEYGWSANMERIMKAQALRDNSMSTYMVSKKTLEINPDHPIVQELRKRVHTDNS 646
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDLV LLFET+LLSSGFSLD+PA+FA RI+RM
Sbjct: 647 DKTVKDLVVLLFETALLSSGFSLDEPAAFAGRIYRM 682
>ref|XP_001735351.1| heat shock protein 81-1 [Entamoeba dispar SAW760]
gi|165902721|gb|EDR28463.1| heat shock protein 81-1,
putative [Entamoeba dispar SAW760]
Length = 744
Score = 156 bits (395), Expect = 5e-36
Identities = 76/96 (79%), Positives = 85/96 (88%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PC LVTGEYGW+ANMERIMKAQALRD+SMS+YMVSKKTLE+NP HPIV ELR R + D
Sbjct: 613 PCALVTGEYGWSANMERIMKAQALRDNSMSTYMVSKKTLEINPDHPIVQELRKRVHTDNS 672
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDLV LLFET+LLSSGFSLD+PA+FA RI+RM
Sbjct: 673 DKTVKDLVVLLFETALLSSGFSLDEPAAFAGRIYRM 708
>ref|XP_001740319.1| heat shock protein [Entamoeba dispar SAW760]
gi|165895596|gb|EDR23250.1| heat shock protein, putative
[Entamoeba dispar SAW760]
Length = 207
Score = 156 bits (395), Expect = 5e-36
Identities = 76/96 (79%), Positives = 85/96 (88%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PC LVTGEYGW+ANMERIMKAQALRD+SMS+YMVSKKTLE+NP HPIV ELR R + D
Sbjct: 76 PCALVTGEYGWSANMERIMKAQALRDNSMSTYMVSKKTLEINPDHPIVQELRKRVHTDNS 135
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDLV LLFET+LLSSGFSLD+PA+FA RI+RM
Sbjct: 136 DKTVKDLVVLLFETALLSSGFSLDEPAAFAGRIYRM 171
>dbj|BAD83620.1| cytosolic-type hsp90 [Entamoeba histolytica]
Length = 708
Score = 156 bits (395), Expect = 5e-36
Identities = 76/96 (79%), Positives = 85/96 (88%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PC LVTGEYGW+ANMERIMKAQALRD+SMS+YMVSKKTLE+NP HPIV ELR R + D
Sbjct: 576 PCALVTGEYGWSANMERIMKAQALRDNSMSTYMVSKKTLEINPDHPIVQELRKRVHTDNS 635
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDLV LLFET+LLSSGFSLD+PA+FA RI+RM
Sbjct: 636 DKTVKDLVVLLFETALLSSGFSLDEPAAFAGRIYRM 671
>ref|XP_012090182.1| PREDICTED: heat shock protein 83 [Jatropha curcas]
gi|643706092|gb|KDP22224.1| hypothetical protein
JCGZ_26055 [Jatropha curcas]
Length = 703
Score = 155 bits (393), Expect = 8e-36
Identities = 77/96 (80%), Positives = 86/96 (89%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PC LVTGEYGWTANMERIMKAQALRDSSMSSYM SKKT+E+NP + I+ ELR RA ADK
Sbjct: 572 PCCLVTGEYGWTANMERIMKAQALRDSSMSSYMSSKKTMEINPDNGIMEELRKRAEADKN 631
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
K+VKDLV+LLFET+LL+SGFSLDDP +FAARIHRM
Sbjct: 632 DKSVKDLVWLLFETALLTSGFSLDDPNTFAARIHRM 667
>ref|XP_006828794.1| PREDICTED: heat shock protein 83 [Amborella trichopoda]
gi|548833773|gb|ERM96210.1| hypothetical protein
AMTR_s00001p00118120 [Amborella trichopoda]
Length = 705
Score = 155 bits (393), Expect = 8e-36
Identities = 76/96 (79%), Positives = 85/96 (88%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PC LVTGEYGWTANMERIMKAQALRDSSMSSYM SKKT+E+NP +PI+ ELR RA ADK
Sbjct: 575 PCCLVTGEYGWTANMERIMKAQALRDSSMSSYMSSKKTMEINPENPIMEELRKRAEADKN 634
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
K+VKDLV LLFET+LL+SGFSLDDP +F+ RIHRM
Sbjct: 635 DKSVKDLVLLLFETALLTSGFSLDDPNTFSGRIHRM 670
>ref|XP_002947115.1| hypothetical protein VOLCADRAFT_73112 [Volvox carteri f.
nagariensis] gi|300267522|gb|EFJ51705.1| hypothetical
protein VOLCADRAFT_73112 [Volvox carteri f. nagariensis]
Length = 703
Score = 155 bits (393), Expect = 8e-36
Identities = 74/96 (77%), Positives = 89/96 (92%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PCVLVTGEYGW+ANMERIMKAQALRD+SM++YM SKKTLE+NP +PI++EL+ R++ADK
Sbjct: 569 PCVLVTGEYGWSANMERIMKAQALRDNSMAAYMTSKKTLEINPENPIMSELKKRSDADKS 628
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDLV LLFET+LLSSGFSLD+P +FA+RIHRM
Sbjct: 629 DKTVKDLVLLLFETALLSSGFSLDEPNTFASRIHRM 664
>ref|XP_001437360.1| hypothetical protein [Paramecium tetraurelia strain d4-2]
gi|124404510|emb|CAK69963.1| unnamed protein product
[Paramecium tetraurelia]
Length = 700
Score = 155 bits (393), Expect = 8e-36
Identities = 73/96 (76%), Positives = 88/96 (91%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PCVLVTGEYGW+ANMERIMKAQALRD SMSSYM+SKKTLE+N HPI++EL+ +A+ DK
Sbjct: 563 PCVLVTGEYGWSANMERIMKAQALRDPSMSSYMMSKKTLEINASHPIMSELKKKADKDKS 622
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDL++LL+ET+LL+SGFSLDDPA FA+RIH+M
Sbjct: 623 DKTVKDLIWLLYETALLTSGFSLDDPAHFASRIHKM 658
>gb|AAY67878.1| heat shock protein 90 [Pseudourostyla cristata]
Length = 710
Score = 155 bits (393), Expect = 8e-36
Identities = 75/96 (78%), Positives = 87/96 (90%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PCVLVTGEYGWTANMERIMKAQALRDSSM+SYMVSKKT+E+NP +PIV ELR +A D+
Sbjct: 578 PCVLVTGEYGWTANMERIMKAQALRDSSMTSYMVSKKTMEINPKNPIVQELRKKAEQDQS 637
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDL++LLFETSLL+SGFSLD+ +FA+RIHRM
Sbjct: 638 DKTVKDLIWLLFETSLLTSGFSLDEANTFASRIHRM 673
>gb|AIR09397.1| HSP90, partial [Trachelomonas abrupta]
Length = 645
Score = 155 bits (392), Expect = 1e-35
Identities = 75/96 (78%), Positives = 86/96 (89%)
Frame = -2
Query: 288 PCVLVTGEYGWTANMERIMKAQALRDSSMSSYMVSKKTLELNPVHPIVAELRNRANADKE 109
PC+LVTGEYGW+ANMERIMKAQALRDSS SSYMVSKKT+ELNP HPIV EL+ +A+ DK
Sbjct: 546 PCILVTGEYGWSANMERIMKAQALRDSSTSSYMVSKKTMELNPQHPIVKELKKKADEDKS 605
Query: 108 SKTVKDLVYLLFETSLLSSGFSLDDPASFAARIHRM 1
KTVKDLV+LLF+TSLL+SGFSLDDP+ +A RI RM
Sbjct: 606 DKTVKDLVWLLFDTSLLTSGFSLDDPSGYAERILRM 641