{"id":7826,"date":"2017-11-13T01:03:58","date_gmt":"2017-11-12T18:03:58","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=7826"},"modified":"2017-12-04T01:04:34","modified_gmt":"2017-12-03T18:04:34","slug":"tim-ra-hop-chat-hoa-hoc-tao-nen-su-song-tren-trai-dat","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/tim-ra-hop-chat-hoa-hoc-tao-nen-su-song-tren-trai-dat\/","title":{"rendered":"T\u00ecm ra h\u1ee3p ch\u1ea5t h\u00f3a h\u1ecdc t\u1ea1o n\u00ean s\u1ef1 s\u1ed1ng tr\u00ean Tr\u00e1i \u0111\u1ea5t"},"content":{"rendered":"
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\"Email\"<\/a>\"In\"<\/a>\"PDF\"<\/a><\/div>\n<\/div>\n
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\"alt\"<\/p>\n

Vi\u1ec7c kh\u00e1m ph\u00e1 ra h\u1ee3p ch\u1ea5t diamidophosphate (DAP) \u0111\u00e3 gi\u00fap c\u00e1c nh\u00e0 khoa h\u1ecdc gh\u00e9p c\u00e1c m\u1ea3nh l\u1ea1i v\u1edbi nhau \u0111\u1ec3 t\u1ea1o ra b\u1ee9c tranh v\u1ec1 s\u1ef1 b\u1eaft \u0111\u1ea7u c\u1ee7a cu\u1ed9c s\u1ed1ng tr\u00ean Tr\u00e1i \u0111\u1ea5t. C\u00f3 l\u1ebd h\u1ee3p ch\u1ea5t n\u00e0y \u0111\u00e3 t\u1ed3n t\u1ea1i khi Tr\u00e1i \u0111\u1ea5t v\u1eabn c\u00f2n non tr\u1ebb v\u00e0 n\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ph\u1ea3n \u1ee9ng \u0111\u1ec3 t\u1ea1o ra nguy\u00ean li\u1ec7u cho cu\u1ed9c s\u1ed1ng.<\/p>\n

Ngu\u1ed3n g\u1ed1c c\u1ee7a s\u1ef1 s\u1ed1ng<\/em><\/strong><\/p>\n

S\u1ef1 s\u1ed1ng xu\u1ea5t hi\u1ec7n nh\u01b0 th\u1ebf n\u00e0o tr\u00ean Tr\u00e1i \u0111\u1ea5t \u0111\u1ebfn nay v\u1eabn c\u00f2n l\u00e0 \u0111i\u1ec1u b\u00ed \u1ea9n. \u0110\u00e3 c\u00f3 nhi\u1ec1u gi\u1ea3 thuy\u1ebft \u0111\u01b0\u1ee3c \u0111\u1eb7t ra cho v\u1ea5n \u0111\u1ec1 n\u00e0y, nh\u01b0ng kh\u00f4ng \u00fd t\u01b0\u1edfng n\u00e0o \u0111\u01b0\u1ee3c ch\u1ee9ng minh m\u1ed9t c\u00e1ch tr\u1ecdn v\u1eb9n v\u00e0 thuy\u1ebft ph\u1ee5c. Thu\u1edf s\u01a1 khai c\u1ee7a Tr\u00e1i \u0111\u1ea5t v\u1eabn l\u00e0 m\u1ed9t \u0111i\u1ec1u b\u00ed \u1ea9n \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u.<\/p>\n

Tuy nhi\u00ean, ph\u00e1t hi\u1ec7n m\u1edbi c\u1ee7a c\u00e1c nh\u00e0 h\u00f3a h\u1ecdc t\u1ea1i Vi\u1ec7n Nghi\u00ean c\u1ee9u Scripps (TSRI) \u0111\u00e3 \u0111\u01b0a ra c\u00e2u tr\u1ea3 l\u1eddi \u0111\u1ea7y thuy\u1ebft ph\u1ee5c cho c\u00e2u h\u1ecfi x\u01b0a c\u0169 n\u00e0y. V\u1eady h\u1ee3p ch\u1ea5t h\u00f3a h\u1ecdc t\u1ea1o ra s\u1ef1 s\u1ed1ng tr\u00ean Tr\u00e1i \u0111\u1ea5t n\u00e0y l\u00e0 g\u00ec?<\/p>\n

Tr\u01b0\u1edbc \u0111\u00e2y, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 \u0111\u01b0a ra gi\u1ea3 thuy\u1ebft r\u1eb1ng, ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc – phosphoryl h\u00f3a, c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a s\u1ef1 s\u1ed1ng. H\u00f3a ch\u1ea5t n\u00e0y cho ph\u00e9p ba th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a c\u00e1c d\u1ea1ng s\u1ed1ng k\u1ebft h\u1ee3p l\u1ea1i v\u1edbi nhau: c\u00e1c s\u1ee3i nucleotide ng\u1eafn l\u01b0u tr\u1eef th\u00f4ng tin di truy\u1ec1n, chu\u1ed7i axit amin ng\u1eafn \u0111\u1ea3m nhi\u1ec7m ph\u1ea7n l\u1edbn c\u00f4ng vi\u1ec7c t\u1ebf b\u00e0o, v\u00e0 ch\u1ea5t b\u00e9o t\u1ea1o th\u00e0nh c\u1ea5u tr\u00fac t\u1ebf b\u00e0o.<\/p>\n

Tuy nhi\u00ean, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u kh\u00f4ng t\u00ecm th\u1ea5y h\u1ee3p ch\u1ea5t n\u00e0o c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o ra ph\u1ea3n \u1ee9ng c\u0169ng nh\u01b0 s\u1ea3n xu\u1ea5t ra ba th\u00e0nh ph\u1ea7n \u0111\u00f3. V\u00e0 h\u1ee3p ch\u1ea5t diamidophosphate (DAP) c\u1ee7a c\u00e1c nh\u00e0 h\u00f3a h\u1ecdc t\u1ea1i Vi\u1ec7n Scripps ch\u00ednh l\u00e0 l\u1eddi gi\u1ea3i cho b\u00e0i to\u00e1n n\u00e0y.<\/p>\n

\u00d4ng Ramanarayanan Krishnamurthy – t\u00e1c gi\u1ea3 c\u1ee7a nghi\u00ean c\u1ee9u v\u00e0 l\u00e0 Ph\u00f3 gi\u00e1o s\u01b0 h\u00f3a h\u1ecdc t\u1ea1i TSRI, cho bi\u1ebft trong m\u1ed9t th\u00f4ng c\u00e1o b\u00e1o ch\u00ed: Ch\u00fang t\u00f4i cho r\u1eb1ng qu\u00e1 tr\u00ecnh h\u00f3a h\u1ecdc phosphoryl h\u00f3a c\u00f9ng m\u1ed9t l\u00fac \u0111\u00e3 l\u00e0m xu\u1ea5t hi\u1ec7n c\u00e1c ph\u00e2n t\u1eed DNA, chu\u1ed7i peptides v\u00e0 c\u00e1c c\u1ea5u tr\u00fac t\u1ebf b\u00e0o v\u00e0 k\u1ebft h\u1ee3p ch\u00fang l\u1ea1i v\u1edbi nhau. \u0110i\u1ec1u n\u00e0y l\u1ea7n l\u01b0\u1ee3t cho ph\u00e9p c\u00e1c h\u00f3a ch\u1ea5t kh\u00e1c (m\u00e0 tr\u01b0\u1edbc \u0111\u00e2y ch\u00fang ta ngh\u0129 l\u00e0 kh\u00f4ng th\u1ec3) t\u1ea1o th\u00e0nh nh\u1eefng th\u1ef1c th\u1ec3 s\u1ed1ng \u0111\u01a1n gi\u1ea3n \u0111\u1ea7u ti\u00ean d\u1ef1a tr\u00ean t\u1ebf b\u00e0o.<\/p>\n

Nh\u1eefng l\u00fd thuy\u1ebft v\u1ec1 s\u1ef1 b\u1eaft \u0111\u1ea7u<\/em><\/strong><\/p>\n

Nghi\u00ean c\u1ee9u n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n tr\u00ean t\u1ea1p ch\u00ed Nature Chemistry v\u00e0 n\u00f3 m\u1edf \u0111\u01b0\u1eddng cho c\u00e1c gi\u1ea3 thuy\u1ebft c\u1ee7a s\u1ef1 s\u1ed1ng \u0111\u1ea7u ti\u00ean tr\u00ean Tr\u00e1i \u0111\u1ea5t. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u cho r\u1eb1ng, h\u1ecd c\u00f3 th\u1ec3 c\u1ee7ng c\u1ed1 th\u00eam c\u00e2u chuy\u1ec7n v\u1ec1 c\u00e1c d\u1ea1ng s\u1ed1ng m\u00e0 \u0111\u00e3 bi\u1ebfn \u0111\u1ed5i t\u1eeb tr\u1ea1ng th\u00e1i h\u00f3a h\u1ecdc h\u1ed7n lo\u1ea1n sang sinh h\u1ecdc v\u00e0 sinh h\u00f3a h\u1ecdc d\u1ef1a tr\u00ean t\u1ebf b\u00e0o.<\/p>\n

C\u00e1c ph\u1ea3n \u1ee9ng kh\u00e1c c\u0169ng \u0111\u01b0\u1ee3c xem l\u00e0 c\u00f3 kh\u1ea3 n\u0103ng phosphoryl h\u00f3a c\u00e1c ph\u00e2n t\u1eed nh\u01b0 v\u1eady, nh\u01b0ng ch\u00fang l\u1ea1i \u0111\u00f2i h\u1ecfi c\u00e1c t\u00e1c nh\u00e2n kh\u00e1c nhau cho c\u00e1c ph\u00e2n t\u1eed kh\u00e1c nhau v\u00e0 m\u00f4i tr\u01b0\u1eddng c\u1ee7a n\u00f3 c\u0169ng kh\u00f4ng th\u00edch h\u1ee3p. \u00d4ng Krishnamurthy n\u00f3i: dTh\u1eadt kh\u00f3 t\u01b0\u1edfng t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c r\u1eb1ng nh\u1eefng quy tr\u00ecnh r\u1ea5t kh\u00e1c nhau c\u00f3 th\u1ec3 k\u1ebft h\u1ee3p c\u00f9ng v\u1edbi nhau m\u1ed9t l\u00fac \u0111\u1ec3 t\u1ea1o ra c\u00e1c d\u1ea1ng s\u1ed1ng s\u01a1 khai \u0111\u1ea7u ti\u00ean.<\/p>\n

Ph\u00e1t hi\u1ec7n n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 \u0111i\u1ec3m \u0111\u1ebfn cu\u1ed1i c\u00f9ng cho h\u00e0nh tr\u00ecnh t\u00ecm ki\u1ebfm l\u1eddi gi\u1ea3i th\u00edch v\u1ec1 ngu\u1ed3n g\u1ed1c c\u1ee7a s\u1ef1 s\u1ed1ng tr\u00ean Tr\u00e1i \u0111\u1ea5t. D\u01b0\u1eddng nh\u01b0 c\u00f3 m\u1ed9t bi\u1ec3n l\u00fd thuy\u1ebft b\u1ea5t t\u1eadn – t\u1eeb th\u1ef1c t\u1ebf \u0111\u1ebfn t\u01b0\u1edfng t\u01b0\u1ee3ng, nh\u1eb1m l\u00fd gi\u1ea3i \u0111\u01b0\u1ee3c kho\u1ea3ng th\u1eddi gian n\u00e0y trong l\u1ecbch s\u1eed c\u1ee7a v\u0169 tr\u1ee5. M\u1ed9t s\u1ed1 nh\u00e0 nghi\u00ean c\u1ee9u cho r\u1eb1ng, c\u00e1c kh\u00e1m ph\u00e1 tr\u00ean sao H\u1ecfa v\u00e0 c\u00e1c l\u00fd thuy\u1ebft v\u1ec1 thi\u00ean th\u1ea1ch ch\u1ee9a c\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a s\u1ef1 s\u1ed1ng l\u00e0 nguy\u00ean nh\u00e2n, trong khi m\u1ed9t s\u1ed1 nh\u00e0 khoa h\u1ecdc kh\u00e1c l\u1ea1i ngh\u0129 r\u1eb1ng c\u00e1c bong b\u00f3ng m\u1edbi ch\u00ednh l\u00e0 th\u1ee9 t\u1ea1o ra s\u1ef1 s\u1ed1ng.<\/p>\n

Tuy nhi\u00ean, s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a DAP \u0111\u00e3 ch\u1ee9ng t\u1ecf vai tr\u00f2 quan tr\u1ecdng c\u1ee7a n\u00f3 trong vi\u1ec7c h\u00ecnh th\u00e0nh h\u00f3a sinh h\u1ecdc d\u1ef1a tr\u00ean t\u1ebf b\u00e0o. Th\u1eadm ch\u00ed n\u00f3 c\u00f2n cho th\u1ea5y kh\u1ea3 n\u0103ng phosphoryl \u0111\u01b0\u1eddng \u0111\u01a1n gi\u1ea3n – d\u1eabn \u0111\u1ebfn vi\u1ec7c t\u1ea1o ra carbohydrate h\u1ed7 tr\u1ee3 s\u1ef1 h\u00ecnh th\u00e0nh c\u1ee7a c\u00e1c d\u1ea1ng s\u1ed1ng t\u1eeb s\u1edbm. V\u00e0 ch\u00fang ta c\u00f3 th\u1ec3 k\u1ebft lu\u1eadn, h\u1ee3p ch\u1ea5t DAP c\u00f3 vai tr\u00f2 kh\u00f4ng nh\u1ecf \u0111\u1ed1i v\u1edbi Tr\u00e1i \u0111\u1ea5t bu\u1ed5i ban s\u01a1.<\/p>\n

H\u1ee3p ch\u1ea5t h\u00f3a h\u1ecdc n\u00e0y l\u00e0m t\u00f4i nh\u1edb \u0111\u1ebfn b\u00e0 ti\u00ean trong truy\u1ec7n c\u00f4 b\u00e9 L\u1ecd Lem. B\u00e0 ta ch\u1ec9 c\u1ea7n v\u1eaby chi\u1ebfc \u0111\u0169a ph\u00e9p, ngay l\u1eadp t\u1ee9c nh\u1eefng th\u1ee9 \u0111\u01a1n gi\u1ea3n tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p v\u00e0 h\u1ea5p d\u1eabn v\u00f4 c\u00f9ng, \u00f4ng Krishnamurthy nh\u1eadn \u0111\u1ecbnh.<\/p>\n

(khampha)<\/em><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Vi\u1ec7c kh\u00e1m ph\u00e1 ra h\u1ee3p ch\u1ea5t diamidophosphate (DAP) \u0111\u00e3 gi\u00fap c\u00e1c nh\u00e0 khoa h\u1ecdc gh\u00e9p c\u00e1c m\u1ea3nh l\u1ea1i v\u1edbi nhau \u0111\u1ec3 t\u1ea1o ra b\u1ee9c tranh v\u1ec1 s\u1ef1 b\u1eaft \u0111\u1ea7u c\u1ee7a cu\u1ed9c s\u1ed1ng tr\u00ean Tr\u00e1i \u0111\u1ea5t. C\u00f3 l\u1ebd h\u1ee3p ch\u1ea5t n\u00e0y \u0111\u00e3 t\u1ed3n t\u1ea1i khi Tr\u00e1i \u0111\u1ea5t v\u1eabn c\u00f2n non tr\u1ebb v\u00e0 n\u00f3 c\u00f3 kh\u1ea3 n\u0103ng […]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-7826","post","type-post","status-publish","format-standard","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7826","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=7826"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7826\/revisions"}],"predecessor-version":[{"id":7827,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7826\/revisions\/7827"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=7826"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=7826"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=7826"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}