{"id":6628,"date":"2013-11-15T02:06:40","date_gmt":"2013-11-14T19:06:40","guid":{"rendered":"http:\/\/antoansinhhoc.vn\/?p=1911"},"modified":"2013-11-15T02:06:40","modified_gmt":"2013-11-14T19:06:40","slug":"vai-tro-moi-cua-ho-protein-khoi-dau-dich-ma-co-the-cung-cap-con-duong-dan-den-su-bien-doi-cac-tinh-trang-cua-cay-trong","status":"publish","type":"post","link":"https:\/\/nbca.gov.vn\/vai-tro-moi-cua-ho-protein-khoi-dau-dich-ma-co-the-cung-cap-con-duong-dan-den-su-bien-doi-cac-tinh-trang-cua-cay-trong\/","title":{"rendered":"Vai tr\u00f2 m\u1edbi c\u1ee7a h\u1ecd protein kh\u1edfi \u0111\u1ea7u d\u1ecbch m\u00e3 c\u00f3 th\u1ec3 cung c\u1ea5p con \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ebfn s\u1ef1 bi\u1ebfn \u0111\u1ed5i c\u00e1c t\u00ednh tr\u1ea1ng c\u1ee7a c\u00e2y tr\u1ed3ng"},"content":{"rendered":"
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M\u1ed9t nghi\u00ean c\u1ee9u m\u1edbi \u0111\u1ebfn t\u1eeb nh\u00f3m c\u00e1c nh\u00e0 sinh v\u1eadt h\u1ecdc c\u1ee7a \u0110\u1ea1i h\u1ecdc Indiana Blommington l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u00e3 cho th\u1ea5y r\u1eb1ng m\u1ed9t lo\u1ea1i protein, \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn t\u1eeb l\u00e2u \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng cho s\u1ef1 kh\u1edfi \u0111\u1ea7u t\u1ed5ng h\u1ee3p protein trong t\u1ea5t c\u1ea3 c\u00e1c sinh v\u1eadt.<\/span><\/span><\/div>\n

\u0110\u0103ng ng\u00e0y 15-11-2013<\/span> trong chuy\u00ean m\u1ee5c Tin th\u1ebf gi\u1edbi<\/a><\/p>\n<\/div>\n

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Protein, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 y\u1ebfu t\u1ed1\u00a0kh\u1edfi s\u1ef1\u00a0d\u1ecbchm\u00e3s\u1ed1\u00a03, ho\u1eb7c IF3, l\u00e0 m\u1ed9t trong ba lo\u1ea1i protein t\u1ea1o n\u00ean c\u1ea5u tr\u00fac l\u00f5i c\u1ee7a\u00a0b\u1ed9\u00a0m\u00e1y c\u1ea7n thi\u1ebft\u00a0\u0111\u1ec3\u00a0h\u01b0\u1edbng d\u1eabn\u00a0vi\u1ec7c tham gia c\u1ee7a RNA v\u00e0 ribosome\u00a0khi s\u1ef1\u00a0d\u1ecbch\u00a0m\u00e3\u00a0protein\u00a0b\u1eaft \u0111\u1ea7u. Ba protein n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c xem l\u00e0 c\u00f3 ho\u1ea1t \u0111\u1ed9ng \u0111\u01a1n gi\u1ea3n theo m\u1ed9t c\u00e1ch c\u01a1 b\u1ea3n v\u00e0 \u00edt c\u00f3 vai tr\u00f2 trong s\u1ef1 \u0111i\u1ec1u h\u00f2a bi\u1ec3u hi\u1ec7n gen.<\/p>\n<\/div>\n

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Nh\u1eefng ph\u00e1t hi\u1ec7n m\u1edbi, t\u1eeb ph\u00f2ng th\u00ed nghi\u1ec7m c\u1ee7a David M. Kehoe, gi\u00e1o s\u01b0 sinh h\u1ecdc t\u1ea1i \u0110\u1ea1i h\u1ecdc Indiana Bloomington, cho th\u1ea5y r\u1eb1ng IF3, ngo\u00e0i ch\u1ee9c n\u0103ng \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn trong s\u1ef1 kh\u1edfi \u0111\u1ea7u d\u1ecbch m\u00e3, n\u00f3 c\u0169ng \u0111i\u1ec1u h\u00f2a s\u1ef1 bi\u1ec3u hi\u1ec7n gen m\u00e3 h\u00f3a cho c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a b\u1ed9 m\u00e1y quang h\u1ee3p \u0111\u1ec3 \u0111\u00e1p \u1ee9ng v\u1edbi nh\u1eefng thay \u0111\u1ed5i m\u00e0u s\u1eafc \u00e1nh s\u00e1ng trong m\u00f4i tr\u01b0\u1eddng xung quanh, m\u1ed9t qu\u00e1 tr\u00ecnh \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 “s\u1ef1 th\u00edch nghi m\u00e0u.”<\/p>\n

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\u1ea2nh hi\u1ec3n vi\u00a0hu\u1ef3nh quang c\u1ee7a m\u1ed9t \u0111\u1ed9t bi\u1ebfn\u00a0\u1edf\u00a0vi khu\u1ea9n\u00a0lam d\u1ea1ng s\u1ee3i\u00a0Fremyelladiplosiphoncho\u00a0th\u1ea5y\u00a0s\u1ef1\u00a0t\u1ef1 ph\u00e1t hu\u1ef3nh quang\u00a0l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a\u00a0vi\u1ec7c t\u00edch l\u0169y qu\u00e1 m\u1ee9c\u00a0c\u00e1c s\u1eafc t\u1ed1quang h\u1ee3p phycoerythrin. Ki\u1ec3u h\u00ecnh n\u00e0y c\u00f3 th\u1ec3 l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a vi\u1ec7c x\u00f3a c\u00e1c gen m\u00e3 h\u00f3a cho m\u1ed9t y\u1ebfu t\u1ed1 kh\u1edfi\u00a0\u0111\u1ea7u d\u1ecbch m\u00e3 s\u1ed1 3. (\u1ea2nh: Xin Zhang v\u00e0 Lina Li)<\/div>\n
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Nh\u1eefng gen quang h\u1ee3p t\u1ea1o ra protein s\u1eafc t\u1ed1 \u0111\u1ecf c\u00f3 t\u00ean l\u00e0 phycoerythrin trong vi khu\u1ea9n lam khi c\u00e1c t\u1ebf b\u00e0o ph\u00e1t tri\u1ec3n trong \u00e1nh s\u00e1ng xanh v\u00e0 cho ph\u00e9p nh\u1eefng sinh v\u1eadt n\u00e0y h\u1ea5p thu c\u00f3 hi\u1ec7u qu\u1ea3 m\u00e0u s\u1eafc \u00e1nh s\u00e1ng \u1edf m\u00f4i tr\u01b0\u1eddng cho quang h\u1ee3p. Nh\u00f3m nghi\u00ean c\u1ee9u ph\u00e1t hi\u1ec7n ra ch\u1ee9c n\u0103ng m\u1edbi c\u1ee7a IF3 trong khi t\u00ecm ki\u1ebfm c\u00e1c \u0111\u1ed9t bi\u1ebfn \u0111i\u1ec1u h\u00f2a kh\u00f4ng ch\u00ednh x\u00e1c phycoerythrin. Vi\u1ec7c ph\u00e1t hi\u1ec7n ra \u0111\u1ed9t bi\u1ebfn n\u00e0y ban \u0111\u1ea7u \u0111\u00e3 g\u00e2y ra s\u1ef1 ng\u1ea1c nhi\u00ean, b\u1edfi v\u00ec trong t\u1ea5t c\u1ea3 c\u00e1c vi khu\u1ea9n kh\u00e1c \u0111\u00e3 \u0111\u01b0\u1ee3c xem x\u00e9t, \u0111\u1ed9t bi\u1ebfn \u1edf infC (gen m\u00e3 h\u00f3a cho IF3) \u0111\u1ec1u g\u00e2y ch\u1ebft.<\/div>\n
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Nh\u00f3m nghi\u00ean c\u1ee9u gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y b\u1eb1ng c\u00e1ch ph\u00e1t hi\u1ec7n ra m\u1ed9t gen infC th\u1ee9 hai trongFremyella diplosiphon<\/i>, m\u1ed9t sinh v\u1eadt d\u00f9ng l\u00e0m m\u00f4 h\u00ecnh cho c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 s\u1ef1 \u0111\u00e1p \u1ee9ng m\u00e0u s\u1eafc \u00e1nh s\u00e1ng \u1edf vi khu\u1ea9n. Trong khi c\u1ea3 hai lo\u1ea1i IF3, \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean l\u00e0 IF3a v\u00e0 IF3b, c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng trong vai tr\u00f2 truy\u1ec1n th\u1ed1ng c\u1ee7a s\u1ef1 kh\u1edfi \u0111\u1ea7u d\u1ecbch m\u00e3, ch\u1ec9 c\u00f3 IF3a \u0111\u01b0\u1ee3c nh\u1eadn th\u1ea5y c\u0169ng c\u00f3 vai tr\u00f2 \u0111i\u1ec1u h\u00f2a s\u1ef1 bi\u1ec3u hi\u1ec7n gen quang h\u1ee3p.<\/p>\n<\/div>\n

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B\u1eb1ng c\u00e1ch kh\u00e1m ph\u00e1 b\u1ed9 gen c\u1ee7a h\u00e0ng tr\u0103m sinh v\u1eadt nh\u00e2n s\u01a1 v\u00e0 nh\u00e2n chu\u1ea9n, nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh m\u1ed9t lo\u1ea1t c\u00e1c lo\u00e0i c\u00f3 b\u1ed9 gen d\u01b0\u1eddng nh\u01b0 c\u00f3 kh\u1ea3 n\u0103ng m\u00e3 h\u00f3a cho nhi\u1ec1u lo\u1ea1i IF3, v\u1edbi m\u1ed9t sinh v\u1eadt d\u01b0\u1eddng nh\u01b0 m\u00e3 h\u00f3a cho n\u0103m th\u00e0nh vi\u00ean kh\u00e1c nhau c\u1ee7a h\u1ecd IF3. V\u00e0 do h\u1ea7u nh\u01b0 kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 nh\u1eefng lo\u00e0i n\u00e0y \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng th\u00edch nghi m\u00e0u, Kehoe tin r\u1eb1ng nhi\u1ec1u lo\u1ea1i IF3 ph\u1ea3i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111i\u1ec1u h\u00f2a m\u1ed9t lo\u1ea1t c\u00e1c \u0111\u00e1p \u1ee9ng v\u1edbi m\u00f4i tr\u01b0\u1eddng v\u00e0 ph\u00e1t tri\u1ec3n trong c\u1ea3 sinh v\u1eadt nh\u00e2n s\u01a1 v\u00e0 nh\u00e2n chu\u1ea9n.<\/p>\n<\/div>\n

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“\u0110i\u1ec1u th\u00fa v\u1ecb l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a ch\u00fang t\u00f4i cho th\u1ea5y r\u1eb1ng h\u1ecd IF3 t\u1ed3n t\u1ea1i trong m\u1ed9t s\u1ed1 lo\u00e0i th\u1ef1c v\u1eadt, bao g\u1ed3m c\u1ea3 c\u00e1c lo\u1ea1i c\u00e2y tr\u1ed3ng quan tr\u1ecdng, ” Kehoe n\u00f3i. “\u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a r\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p m\u1edbi \u0111\u1ec3 bi\u1ebfn \u0111\u1ed5i t\u00ednh tr\u1ea1ng \u1edf c\u00e1c lo\u00e0i c\u00e2y n\u00f4ng nghi\u1ec7p quan tr\u1ecdng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh m\u00f4 h\u00ecnh bi\u1ec3u hi\u1ec7n c\u1ee7a c\u00e1c th\u00e0nh vi\u00ean kh\u00e1c nhau thu\u1ed9c h\u1ecd IF3.”<\/p>\n<\/div>\n

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Trong l\u1ecbch s\u1eed, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 c\u00f3 m\u1ed9t th\u1eddi gian kh\u00f3 kh\u0103n t\u00ecm hi\u1ec3u v\u1ec1 IF3 b\u1edfi v\u00ec n\u00f3 r\u1ea5t c\u1ea7n thi\u1ebft cho s\u1ef1 kh\u1edfi \u0111\u1ea7u d\u1ecbch m\u00e3 \u0111\u1ebfn n\u1ed7i kh\u00f4ng th\u1ec3 thay \u0111\u1ed5i n\u00f3 m\u00e0 kh\u00f4ng g\u00e2y ra c\u00e1i ch\u1ebft. Trong th\u1ef1c t\u1ebf, n\u00f3 v\u1eabn l\u00e0 m\u1ed9t trong s\u1ed1 \u00edt c\u00e1c protein li\u00ean quan \u0111\u1ebfn d\u1ecbch m\u00e3 m\u00e0 kh\u00f4ng c\u00f3 m\u1ed9t lo\u1ea1i kh\u00e1ng sinh hi\u1ec7u qu\u1ea3 n\u00e0o \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n t\u1eeb \u0111\u00f3. Nh\u01b0ng kh\u1ea3 n\u0103ng c\u1ee7a nh\u00f3m Kehoe v\u1ec1 vi\u1ec7c lo\u1ea1i b\u1ecf m\u1ed9t trong hai gen infC trong\u00a0F. diplosiphon<\/i>\u00a0m\u00e0 kh\u00f4ng g\u00e2y ch\u1ebft s\u1ebd cho ph\u00e9p c\u00e1c nh\u00f3m nghi\u00ean c\u1ee9u bi\u1ebfn \u0111\u1ed5i c\u1ea3 hai y\u1ebfu t\u1ed1 IF3a v\u00e0 IF3b theo \u00fd mu\u1ed1n.<\/p>\n<\/div>\n

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“Hi\u1ec7n t\u1ea1i ch\u00fang ta bi\u1ebft r\u1eb1ng\u00a0F. diplosiphon<\/i>\u00a0ch\u1ee9a hai lo\u1ea1i IF3 kh\u00e1c nhau v\u1ec1 ch\u1ee9c n\u0103ng, v\u00e0 m\u1ed9t lo\u1ea1i l\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft, ch\u00fang ta c\u00f3 m\u1ed9t c\u01a1 h\u1ed9i duy nh\u1ea5t \u0111\u1ec3 n\u00e2ng cao s\u1ef1 hi\u1ec3u bi\u1ebft v\u1ec1 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac c\u1ee7a IF3 c\u00f3 li\u00ean quan \u0111\u1ebfn ch\u1ee9c n\u0103ng c\u1ee7a n\u00f3,” Kehoe n\u00f3i. “Vi\u1ec7c n\u00e2ng cao s\u1ef1 hi\u1ec3u bi\u1ebft c\u1ee7a ch\u00fang ta v\u1ec1 vai tr\u00f2 c\u1ee7a IF3 trong d\u1ecbch m\u00e3 c\u00f3 th\u1ec3 cung c\u1ea5p c\u00e1c c\u01a1 h\u1ed9i \u0111\u1ec3 ph\u00e1t tri\u1ec3n c\u00e1c lo\u1ea1i thu\u1ed1c kh\u00e1ng sinh m\u1edbi nh\u1eafm m\u1ee5c ti\u00eau v\u00e0o nh\u00f3m protein n\u00e0y.”<\/p>\n<\/div>\n

<\/div>\n
Ngu\u1ed3n: Sciencedaily<\/div>\n
http:\/\/www.sciencedaily.com\/releases\/2013\/09\/130918181128.htm<\/span><\/a><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

M\u1ed9t nghi\u00ean c\u1ee9u m\u1edbi \u0111\u1ebfn t\u1eeb nh\u00f3m c\u00e1c nh\u00e0 sinh v\u1eadt h\u1ecdc c\u1ee7a \u0110\u1ea1i h\u1ecdc Indiana Blommington l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u00e3 cho th\u1ea5y r\u1eb1ng m\u1ed9t lo\u1ea1i protein, \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn t\u1eeb l\u00e2u \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng cho s\u1ef1 kh\u1edfi \u0111\u1ea7u t\u1ed5ng h\u1ee3p protein trong t\u1ea5t c\u1ea3 c\u00e1c sinh v\u1eadt. \u0110\u0103ng ng\u00e0y 15-11-2013 trong chuy\u00ean […]\n","protected":false},"author":1,"featured_media":6403,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[87],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts\/6628"}],"collection":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/comments?post=6628"}],"version-history":[{"count":0,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts\/6628\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media\/6403"}],"wp:attachment":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media?parent=6628"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/categories?post=6628"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/tags?post=6628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}