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Pathogen-associated molecular pattern

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therefore been proposed. A virulence signal capable of binding to a pathogen receptor, in combination with a MAMP, has been proposed as one way to constitute a (pathogen-specific) PAMP. Plant immunology frequently treats the terms "PAMP" and "MAMP" interchangeably, considering their recognition to be the first step in plant immunity, PTI (PAMP-triggered immunity), a relatively weak immune response that occurs when the host plant does not also recognize pathogenic effectors that damage it or modulate its immune response.
118:, are considered to be the prototypical class of PAMPs. The lipid portion of LPS, lipid A, contains a diglycolamine backbone with multiple acyl chains. This is the conserved structural motif that is recognized by TLR4, particularly the TLR4-MD2 complex. Microbes have two main strategies in which they try to avoid the immune system, either by masking lipid A or directing their LPS towards an immunomodulatory receptor. 37:
Although the term "PAMP" is relatively new, the concept that molecules derived from microbes must be detected by receptors from multicellular organisms has been held for many decades, and references to an "endotoxin receptor" are found in much of the older literature. The recognition of PAMPs by the
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in 1989, PAMP was used to describe microbial components that would be considered foreign in a multicellular host. The term "PAMP" has been criticized on the grounds that most microbes, not only pathogens, express the molecules detected; the term microbe-associated molecular pattern (MAMP), has
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Dammermann W, Wollenberg L, Bentzien F, Lohse A, Lüth S (October 2013). "Toll like receptor 2 agonists lipoteichoic acid and peptidoglycan are able to enhance antigen specific IFNγ release in whole blood during recall antigen responses".
165:, are all recognized by a heterodimer of TLR2 and TLR1 or TLR6. However, LTAs result in a weaker pro-inflammatory response compared to lipopeptides, as they are only recognized by TLR2 instead of the heterodimer. 86:. The CpG motifs must be internalized in order to be recognized by TLR9. Viral glycoproteins, as seen in the viral-envelope, as well as fungal PAMPS on the cell surface or fungi are recognized by 1219:
Thoma-Uszynski S, Stenger S, Takeuchi O, Ochoa MT, Engele M, Sieling PA, et al. (February 2001). "Induction of direct antimicrobial activity through mammalian toll-like receptors".
193:. The mycobacterial wall is composed of lipids and polysaccharides and also contains high amounts of mycolic acid. Purified cell wall components of mycobacteria activate mainly 1075:
Rumbo M, Nempont C, Kraehenbuhl JP, Sirard JC (May 2006). "Mucosal interplay among commensal and pathogenic bacteria: lessons from flagellin and Toll-like receptor 5".
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Koropatnick TA, Engle JT, Apicella MA, Stabb EV, Goldman WE, McFall-Ngai MJ (November 2004). "Microbial factor-mediated development in a host-bacterial mutualism".
1332: 380: 124:(PG) is also found within the membrane walls of gram-negative bacteria and is recognized by TLR2, which is usually in a heterodimer of with 34:(PRRs) in both plants and animals. This allows the innate immune system to recognize pathogens and thus, protect the host from infection. 1325: 805: 788: 766: 356: 62:. Despite being a protein, its N- and C-terminal ends are highly conserved, due to its necessity for function of flagella. 228: 1318: 26:) are small molecular motifs conserved within a class of microbes, but not present in the host. They are recognized by 1664: 787:
Ahmad-Nejad, Parviz; Häcker, Hans; Rutz, Mark; Bauer, Stefan; Vabulas, Ramunas M; Wagner, Hermann (June 20, 2002).
1659: 1602: 584: 31: 789:"Bacterial CpG-DNA and lipopolysaccharides activate Toll-like receptors at distinct cellular compartments" 38:
PRRs triggers activation of several signaling cascades in the host immune cells like the stimulation of
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Ingle RA, Carstens M, Denby KJ (September 2006). "PAMP recognition and the plant-pathogen arms race".
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Ausubel FM (October 2005). "Are innate immune signaling pathways in plants and animals conserved?".
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Tang, Daolin; Kang, Rui; Coyne, Carolyn B.; Zeh, Herbert J.; Lotze, Michael T. (September 2012).
1761: 1690: 1408: 1344: 1269:"Glycans in the immune system and The Altered Glycan Theory of Autoimmunity: a critical review" 1084: 478:"Glycans in the immune system and The Altered Glycan Theory of Autoimmunity: a critical review" 144: 115: 1178:
Quesniaux V, Fremond C, Jacobs M, Parida S, Nicolle D, Yeremeev V, et al. (August 2004).
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Maverakis E, Kim K, Shimoda M, Gershwin ME, Patel F, Wilken R, et al. (February 2015).
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Maverakis E, Kim K, Shimoda M, Gershwin ME, Patel F, Wilken R, et al. (February 2015).
1654: 1587: 1498: 1422: 1228: 1142: 941: 746: 129: 125: 91: 87: 59: 8: 1714: 1649: 1632: 1466: 1384: 1232: 1146: 945: 1534: 1293: 1268: 1110: 1052: 1027: 1008: 965: 870: 837: 818: 715: 690: 666: 639: 620: 556: 502: 477: 374: 327: 279: 254: 103: 27: 1582: 1348: 1298: 1244: 1201: 1160: 1102: 1057: 1000: 957: 914: 875: 857: 810: 762: 720: 671: 640:"Sweeten PAMPs: Role of Sugar Complexed PAMPs in Innate Immunity and Vaccine Biology" 612: 604: 548: 507: 458: 417: 362: 352: 319: 284: 270: 233: 140: 1114: 969: 822: 624: 560: 331: 1702: 1642: 1614: 1609: 1577: 1564: 1554: 1288: 1280: 1236: 1191: 1150: 1094: 1047: 1039: 1012: 992: 949: 906: 865: 849: 800: 758: 754: 710: 702: 661: 651: 596: 538: 497: 489: 448: 407: 311: 274: 266: 58:. Flagellin is also another PAMP that is recognized via the constant domain, D1 by 1240: 1098: 1597: 1196: 1179: 412: 395: 174: 853: 706: 1624: 1569: 1510: 1430: 1403: 1284: 543: 526: 493: 453: 436: 55: 1043: 910: 1755: 1592: 1481: 861: 656: 608: 366: 186: 121: 111: 953: 201:. Lipomannan and lipoarabinomannan are strong immunomodulatory lipoglycans. 1559: 1544: 1539: 1476: 1374: 1302: 1248: 1205: 1164: 1106: 1061: 1004: 961: 918: 879: 814: 724: 675: 616: 552: 511: 462: 421: 323: 288: 63: 50:
A vast array of different types of molecules can serve as PAMPs, including
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10.1002/1521-4141(200207)32:7<1958::AID-IMMU1958>3.0.CO;2-U
315: 216: 190: 39: 1740: 1445: 1340: 1180:"Toll-like receptor pathways in the immune responses to mycobacteria" 107: 1730: 1515: 1503: 1461: 1415: 1379: 996: 1218: 525:
Akira, Shizuo; Uematsu, Satoshi; Takeuchi, Osamu (February 2006).
1735: 1549: 1398: 1369: 895: 162: 1028:"Innate and acquired plasticity of the intestinal immune system" 1707: 1695: 1440: 1391: 836:
Silhavy, Thomas J.; Kahne, Daniel; Walker, Suzanne (May 2010).
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Silva-Gomes, Sandro; Decout, Alexiane; Nigou, Jérôme (2014),
255:"PAMPs and DAMPs: signal 0s that spur autophagy and immunity" 206: 158: 71: 67: 1177: 1266: 475: 202: 198: 194: 83: 75: 1025: 786: 638:
Mahla RS, Reddy MC, Prasad DV, Kumar H (September 2013).
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Janeway, Charles A.; Medzhitov, Ruslan (April 2002).
393: 524: 434: 1026:Didierlaurent A, Simonet M, Sirard JC (June 2005). 835: 688: 301: 209:can recognize cell wall lipoprotein antigens from 189:are intracellular bacteria which survive in host 1753: 747:"Pathogen-Associated Molecular Patterns (PAMPs)" 582: 435:Akira S, Uematsu S, Takeuchi O (February 2006). 252: 891: 889: 215:, which also induce production of cytokines by 394:Pichlmair A, Reis e Sousa C (September 2007). 219:. TLR9 can be activated by mycobacterial DNA. 1326: 348:Review of medical microbiology and immunology 886: 682: 295: 469: 1333: 1319: 1128: 842:Cold Spring Harbor Perspectives in Biology 695:Cold Spring Harbor Perspectives in Biology 689:Silhavy TJ, Kahne D, Walker S (May 2010). 527:"Pathogen Recognition and Innate Immunity" 437:"Pathogen recognition and innate immunity" 379:: CS1 maint: location missing publisher ( 1292: 1195: 1154: 1088: 1051: 869: 804: 714: 665: 655: 542: 501: 452: 411: 278: 135: 97: 753:, Basel: Springer Basel, pp. 1–16, 601:10.1146/annurev.immunol.20.083001.084359 344: 982: 1754: 20:Pathogen-associated molecular patterns 1314: 751:Encyclopedia of Inflammatory Diseases 740: 738: 736: 734: 151:(sBLP), a phenol soluble factor from 1129:Jones JD, Dangl JL (November 2006). 1032:Cellular and Molecular Life Sciences 578: 576: 574: 572: 570: 13: 1259: 731: 181: 66:variants normally associated with 14: 1773: 567: 899:Journal of Immunological Methods 271:10.1111/j.1600-065X.2012.01146.x 1212: 1171: 1122: 1068: 1019: 976: 925: 829: 780: 396:"Innate recognition of viruses" 70:, such as double-stranded RNA ( 45: 1660:Immunoglobulin class switching 793:European Journal of Immunology 759:10.1007/978-3-0348-0620-6_35-1 631: 518: 428: 387: 338: 246: 1: 1241:10.1126/science.291.5508.1544 1099:10.1016/j.febslet.2006.04.036 838:"The bacterial cell envelope" 749:, in Parnham, Michael (ed.), 691:"The bacterial cell envelope" 239: 32:pattern recognition receptors 1197:10.1016/j.micinf.2004.04.016 413:10.1016/j.immuni.2007.08.012 16:Pattern of the immune system 7: 854:10.1101/cshperspect.a000414 707:10.1101/cshperspect.a000414 589:Annual Review of Immunology 585:"Innate Immune Recognition" 351:(14th ed.). New York. 222: 42:(IFNs) or other cytokines. 10: 1778: 1489:Polyclonal B cell response 1285:10.1016/j.jaut.2014.12.002 1119:(Free full text available) 544:10.1016/j.cell.2006.02.015 494:10.1016/j.jaut.2014.12.002 454:10.1016/j.cell.2006.02.015 212:Mycobacterium tuberculosis 168: 154:Staphylococcus epidermidis 1723: 1681: 1623: 1524: 1454: 1362: 1355: 1131:"The plant immune system" 1044:10.1007/s00018-005-5032-4 911:10.1016/j.jim.2013.08.004 82:motifs are recognized by 657:10.3389/fimmu.2013.00248 1273:Journal of Autoimmunity 954:10.1126/science.1102218 644:Frontiers in Immunology 482:Journal of Autoimmunity 1603:Tolerance in pregnancy 1345:adaptive immune system 1184:Microbes and Infection 149:bacterial lipoproteins 145:gram-positive bacteria 136:Gram-positive bacteria 116:gram-negative bacteria 106:(LPSs), also known as 98:Gram-negative bacteria 1638:Somatic hypermutation 1472:Polyclonal antibodies 1467:Monoclonal antibodies 259:Immunological Reviews 157:, and a component of 74:), are recognized by 1655:Junctional diversity 1423:Antigen presentation 205:with association of 173:First introduced by 1650:V(D)J recombination 1633:Affinity maturation 1385:Antigenic variation 1233:2001Sci...291.1544T 1227:(5508): 1544–1547. 1156:10.1038/nature05286 1147:2006Natur.444..323J 946:2004Sci...306.1186K 940:(5699): 1186–1188. 345:Levinson W (2016). 110:, are found on the 104:lipopolysaccharides 28:toll-like receptors 316:10.1002/bies.20457 1749: 1748: 1677: 1676: 1427:professional APCs 1141:(7117): 323–329. 1083:(12): 2976–2984. 1038:(12): 1285–1287. 985:Nature Immunology 768:978-3-0348-0620-6 358:978-0-07-184574-8 234:Tissue remodeling 141:Lipoteichoic acid 78:and unmethylated 30:(TLRs) and other 1769: 1643:Clonal selection 1615:Immune privilege 1610:Immunodeficiency 1565:Cross-reactivity 1555:Hypersensitivity 1360: 1359: 1335: 1328: 1321: 1312: 1311: 1306: 1296: 1253: 1252: 1216: 1210: 1209: 1199: 1175: 1169: 1168: 1158: 1126: 1120: 1118: 1092: 1072: 1066: 1065: 1055: 1023: 1017: 1016: 980: 974: 973: 929: 923: 922: 905:(1–2): 107–115. 893: 884: 883: 873: 833: 827: 826: 808: 799:(7): 1819–2094. 784: 778: 777: 776: 775: 742: 729: 728: 718: 686: 680: 679: 669: 659: 635: 629: 628: 580: 565: 564: 546: 522: 516: 515: 505: 473: 467: 466: 456: 432: 426: 425: 415: 391: 385: 384: 378: 370: 342: 336: 335: 299: 293: 292: 282: 250: 1777: 1776: 1772: 1771: 1770: 1768: 1767: 1766: 1752: 1751: 1750: 1745: 1719: 1673: 1619: 1598:Clonal deletion 1526: 1520: 1450: 1351: 1339: 1309: 1262: 1260:Further reading 1257: 1256: 1217: 1213: 1190:(10): 946–959. 1176: 1172: 1127: 1123: 1090:10.1.1.320.8479 1073: 1069: 1024: 1020: 991:(10): 973–979. 981: 977: 930: 926: 894: 887: 834: 830: 785: 781: 773: 771: 769: 743: 732: 687: 683: 636: 632: 581: 568: 523: 519: 474: 470: 433: 429: 392: 388: 372: 371: 359: 343: 339: 300: 296: 251: 247: 242: 225: 184: 182:In mycobacteria 175:Charles Janeway 171: 138: 100: 56:glycoconjugates 48: 17: 12: 11: 5: 1775: 1765: 1764: 1747: 1746: 1744: 1743: 1738: 1733: 1727: 1725: 1721: 1720: 1718: 1717: 1712: 1711: 1710: 1700: 1699: 1698: 1687: 1685: 1679: 1678: 1675: 1674: 1672: 1671: 1662: 1657: 1652: 1647: 1646: 1645: 1640: 1629: 1627: 1625:Immunogenetics 1621: 1620: 1618: 1617: 1612: 1607: 1606: 1605: 1600: 1595: 1590: 1585: 1573: 1572: 1570:Co-stimulation 1567: 1562: 1557: 1552: 1547: 1542: 1537: 1530: 1528: 1522: 1521: 1519: 1518: 1513: 1511:Immune complex 1507: 1506: 1501: 1496: 1491: 1486: 1485: 1484: 1479: 1474: 1469: 1458: 1456: 1452: 1451: 1449: 1448: 1443: 1438: 1433: 1431:Dendritic cell 1419: 1418: 1413: 1412: 1411: 1409:Conformational 1406: 1395: 1394: 1389: 1388: 1387: 1382: 1377: 1366: 1364: 1357: 1353: 1352: 1338: 1337: 1330: 1323: 1315: 1308: 1307: 1263: 1261: 1258: 1255: 1254: 1211: 1170: 1121: 1067: 1018: 997:10.1038/ni1253 975: 924: 885: 848:(5): a000414. 828: 779: 767: 730: 701:(5): a000414. 681: 630: 595:(1): 197–216. 566: 537:(4): 783–801. 517: 468: 447:(4): 783–801. 427: 406:(3): 370–383. 386: 357: 337: 310:(9): 880–889. 294: 265:(1): 158–175. 244: 243: 241: 238: 237: 236: 231: 224: 221: 183: 180: 170: 167: 137: 134: 112:cell membranes 99: 96: 47: 44: 15: 9: 6: 4: 3: 2: 1774: 1763: 1762:Immune system 1760: 1759: 1757: 1742: 1739: 1737: 1734: 1732: 1729: 1728: 1726: 1722: 1716: 1713: 1709: 1706: 1705: 1704: 1701: 1697: 1694: 1693: 1692: 1689: 1688: 1686: 1684: 1680: 1670: 1666: 1663: 1661: 1658: 1656: 1653: 1651: 1648: 1644: 1641: 1639: 1636: 1635: 1634: 1631: 1630: 1628: 1626: 1622: 1616: 1613: 1611: 1608: 1604: 1601: 1599: 1596: 1594: 1593:Clonal anergy 1591: 1589: 1586: 1584: 1581: 1580: 1579: 1575: 1574: 1571: 1568: 1566: 1563: 1561: 1558: 1556: 1553: 1551: 1548: 1546: 1543: 1541: 1538: 1536: 1532: 1531: 1529: 1523: 1517: 1514: 1512: 1509: 1508: 1505: 1502: 1500: 1497: 1495: 1492: 1490: 1487: 1483: 1482:Microantibody 1480: 1478: 1475: 1473: 1470: 1468: 1465: 1464: 1463: 1460: 1459: 1457: 1453: 1447: 1444: 1442: 1439: 1437: 1434: 1432: 1428: 1424: 1421: 1420: 1417: 1414: 1410: 1407: 1405: 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530: 520: 485: 481: 471: 444: 440: 430: 403: 399: 389: 347: 340: 307: 303: 297: 262: 258: 248: 210: 187:Mycobacteria 185: 172: 152: 139: 120: 101: 64:Nucleic acid 49: 46:Common PAMPs 36: 23: 19: 18: 1683:Lymphocytes 1342:Lymphocytic 488:(6): 1–13. 217:macrophages 191:macrophages 143:(LTA) from 40:interferons 1724:Substances 1588:Peripheral 1576:Inaction: 1455:Antibodies 1436:Macrophage 1349:complement 774:2023-03-10 240:References 108:endotoxins 102:Bacterial 1741:Cytolysin 1731:Cytokines 1578:Tolerance 1527:tolerance 1446:Immunogen 1085:CiteSeerX 862:1943-0264 609:0732-0582 375:cite book 367:951918628 304:BioEssays 197:and also 1756:Category 1691:Cellular 1535:Immunity 1533:Action: 1516:Paratope 1504:Idiotype 1494:Allotype 1462:Antibody 1416:Mimotope 1380:Allergen 1363:Antigens 1356:Lymphoid 1303:25578468 1279:: 1–13. 1249:11222859 1206:15310472 1165:17108957 1115:14300007 1107:16650409 1062:15971103 1005:16177805 970:41603462 962:15539604 919:23954282 880:20452953 823:31631310 815:12115616 725:20452953 676:24032031 625:39036433 617:11861602 561:14357403 553:16497588 512:25578468 463:16497588 422:17892846 400:Immunity 332:26861625 324:16937346 289:22889221 223:See also 1736:Opsonin 1715:NK cell 1703:Humoral 1583:Central 1550:Allergy 1499:Isotype 1399:Epitope 1370:Antigen 1294:4340844 1229:Bibcode 1221:Science 1143:Bibcode 1053:1865479 1013:7451505 942:Bibcode 934:Science 871:2857177 716:2857177 667:3759294 650:: 248. 503:4340844 280:3662247 169:History 163:zymosan 68:viruses 52:glycans 1708:B cell 1696:T cell 1441:B cell 1404:Linear 1392:Hapten 1301:  1291:  1247:  1204:  1163:  1135:Nature 1113:  1105:  1087:  1060:  1050:  1011:  1003:  968:  960:  917:  878:  868:  860:  821:  813:  765:  723:  713:  674:  664:  623:  615:  607:  559:  551:  510:  500:  461:  420:  365:  355:  330:  322:  287:  277:  1111:S2CID 1009:S2CID 966:S2CID 819:S2CID 621:S2CID 557:S2CID 328:S2CID 159:yeast 72:dsRNA 24:PAMPs 1347:and 1299:PMID 1245:PMID 1202:PMID 1161:PMID 1103:PMID 1058:PMID 1001:PMID 958:PMID 915:PMID 876:PMID 858:ISSN 811:PMID 763:ISBN 721:PMID 672:PMID 613:PMID 605:ISSN 549:PMID 531:Cell 508:PMID 459:PMID 441:Cell 418:PMID 381:link 363:OCLC 353:ISBN 320:PMID 285:PMID 229:DAMP 207:TLR1 203:TLR2 199:TLR4 195:TLR2 130:TLR6 126:TLR1 92:TLR4 90:and 88:TLR2 84:TLR9 76:TLR3 60:TLR5 54:and 1669:HLA 1665:MHC 1289:PMC 1281:doi 1237:doi 1225:291 1192:doi 1151:doi 1139:444 1095:doi 1081:580 1048:PMC 1040:doi 993:doi 950:doi 938:306 907:doi 903:396 866:PMC 850:doi 801:doi 755:doi 711:PMC 703:doi 662:PMC 652:doi 597:doi 539:doi 535:124 498:PMC 490:doi 449:doi 445:124 408:doi 312:doi 275:PMC 267:doi 263:249 128:or 114:of 80:CpG 1758:: 1429:: 1297:. 1287:. 1277:57 1275:. 1271:. 1243:. 1235:. 1223:. 1200:. 1186:. 1182:. 1159:. 1149:. 1137:. 1133:. 1109:. 1101:. 1093:. 1079:. 1056:. 1046:. 1036:62 1034:. 1030:. 1007:. 999:. 987:. 964:. 956:. 948:. 936:. 913:. 901:. 888:^ 874:. 864:. 856:. 844:. 840:. 817:. 809:. 797:32 795:. 791:. 761:, 733:^ 719:. 709:. 697:. 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Index

toll-like receptors
pattern recognition receptors
interferons
glycans
glycoconjugates
TLR5
Nucleic acid
viruses
dsRNA
TLR3
CpG
TLR9
TLR2
TLR4
lipopolysaccharides
endotoxins
cell membranes
gram-negative bacteria
Peptidoglycan
TLR1
TLR6
Lipoteichoic acid
gram-positive bacteria
bacterial lipoproteins
Staphylococcus epidermidis
yeast
zymosan
Charles Janeway
Mycobacteria
macrophages

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