{"id":16494,"date":"2026-10-02T15:08:24","date_gmt":"2026-10-02T15:08:24","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=16494"},"modified":"2026-10-02T15:08:24","modified_gmt":"2026-10-02T15:08:24","slug":"chirality-of-life-building-blocks","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/hu\/science\/biology\/chirality-of-life-building-blocks\/","title":{"rendered":"Kiralit\u00e1s: Az \u00e9let \u00e9p\u00edt\u0151k\u00f6veinek k\u00e9zis\u00e9ge"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Kiralit\u00e1s: Az \u00e9let \u00e9p\u00edt\u0151k\u00f6veinek k\u00e9zis\u00e9ge<\/h2>\n\n<h2 class=\"wp-block-heading\">Mi a kiralit\u00e1s?<\/h2>\n\n<p class=\"wp-block-paragraph\">A kiralit\u00e1s a molekul\u00e1k k\u00e9zis\u00e9get jelenti, vagyis azt, hogy k\u00e9t t\u00fck\u00f6rk\u00e9pes form\u00e1ban l\u00e9tezhetnek. Ak\u00e1rcsak a jobb \u00e9s bal kezed t\u00fck\u00f6rk\u00e9pei egym\u00e1snak, a kir\u00e1lis molekul\u00e1knak is \u201ebalk\u00e9z\u0171\u201d \u00e9s \u201ejobbkezes\u201d v\u00e1ltozatai vannak.<\/p>\n\n<h2 class=\"wp-block-heading\">Homokiralit\u00e1s a F\u00f6ld\u00f6n<\/h2>\n\n<p class=\"wp-block-paragraph\">Meglep\u0151 m\u00f3don minden aminosav \u00e9s cukor, amelyek az \u00e9letet alkotj\u00e1k a F\u00f6ld\u00f6n, homokiralit\u00e1s\u00fa, vagyis csak egyetlen k\u00e9zis\u00e9ggel l\u00e9teznek. Az aminosavak balk\u00e9z\u0171ek, m\u00edg a cukrok jobbkezesek. Ezt a jelens\u00e9get homokiralit\u00e1snak nevezik.<\/p>\n\n<h2 class=\"wp-block-heading\">A homokiralit\u00e1s eredete<\/h2>\n\n<p class=\"wp-block-paragraph\">A homokiralit\u00e1s eredete titok. Egy elm\u00e9let szerint a t\u00e9rben l\u00e9v\u0151 polariz\u00e1lt f\u00e9ny elpuszt\u00edthatta a jobbkezes aminosavakat, \u00edgy a balkezes aminosavak t\u00f6bblete alakult ki. Egy m\u00e1sik elm\u00e9let azt sugallja, hogy a korai F\u00f6ld\u00f6n zajl\u00f3 k\u00e9miai reakci\u00f3k feler\u0151s\u00edthett\u00e9k ezt a t\u00f6bbletet.<\/p>\n\n<h2 class=\"wp-block-heading\">Sz\u00fcks\u00e9ges-e a homokiralit\u00e1s az \u00e9lethez?<\/h2>\n\n<p class=\"wp-block-paragraph\">B\u00e1r a homokiralit\u00e1s a f\u00f6ldi \u00e9let jellegzetess\u00e9ge, nem egy\u00e9rtelm\u0171, hogy \u00e1ltal\u00e1noss\u00e1gban elengedhetetlen-e az \u00e9lethez. N\u00e9h\u00e1ny tud\u00f3s \u00fagy v\u00e9li, hogy az \u00e9let mindk\u00e9t k\u00e9zis\u00e9get felhaszn\u00e1l\u00f3 \u00e9p\u00edt\u0151k\u00f6vekkel is l\u00e9tezhet. Ez a k\u00e9rd\u00e9s azonban tov\u00e1bbra is akt\u00edv kutat\u00e1si ter\u00fclet.<\/p>\n\n<h2 class=\"wp-block-heading\">Kiralit\u00e1s az interstell\u00e1ris t\u00e9rben<\/h2>\n\n<p class=\"wp-block-paragraph\">Kiralikus molekul\u00e1kat kimutattak az interstell\u00e1ris t\u00e9rben, ami arra utal, hogy ez a jelens\u00e9g sz\u00e9les k\u00f6rben jelen lehet az univerzumban. A kutat\u00f3k azt vizsg\u00e1lj\u00e1k, hogy az interstell\u00e1ris molekul\u00e1k k\u00f6z\u00f6tt van-e egy k\u00e9zis\u00e9gi t\u00fals\u00faly.<\/p>\n\n<h2 class=\"wp-block-heading\">Haszn\u00e1lhat-e az \u00e9let mindk\u00e9t k\u00e9zis\u00e9get?<\/h2>\n\n<p class=\"wp-block-paragraph\">Az a k\u00e9rd\u00e9s, hogy az \u00e9letform\u00e1k haszn\u00e1lhatj\u00e1k-e mind a bal-, mind a jobbkezes \u00e9p\u00edt\u0151k\u00f6veket, m\u00e9g nyitott. N\u00e9h\u00e1ny f\u00f6ldi bakt\u00e9rium k\u00e9pes a jobbkezes aminosavakat balkezes form\u00e1v\u00e1 alak\u00edtani, de nem ismert, hogy ez mennyire elterjedt k\u00e9pess\u00e9g.<\/p>\n\n<h2 class=\"wp-block-heading\">A k\u00e9zis\u00e9gek fokoz\u00e1sa<\/h2>\n\n<p class=\"wp-block-paragraph\">A tud\u00f3sok el\u0151rel\u00e9p\u00e9seket \u00e9rtek el egy k\u00e9zis\u00e9gi t\u00f6bblet fokoz\u00e1s\u00e1ban k\u00e9miai reakci\u00f3k sor\u00e1n. Ennek ellen\u00e9re m\u00e9g messze vannak att\u00f3l, hogy teljesen meg\u00e9rts\u00e9k azokat a k\u00e9miai folyamatokat, amelyek a korai F\u00f6ld\u00f6n a homokiralit\u00e1shoz hozz\u00e1j\u00e1rultak.<\/p>\n\n<h2 class=\"wp-block-heading\">Folyamatos kutat\u00e1s<\/h2>\n\n<p class=\"wp-block-paragraph\">A kutat\u00f3k tov\u00e1bbra is vizsg\u00e1lj\u00e1k a kiralit\u00e1s \u00e9s a homokiralit\u00e1s rejtelmeit. Az interstell\u00e1ris molekul\u00e1k tanulm\u00e1nyoz\u00e1s\u00e1val, a k\u00e9miai reakci\u00f3k felt\u00e9rk\u00e9pez\u00e9s\u00e9vel \u00e9s \u00faj technol\u00f3gi\u00e1k kifejleszt\u00e9s\u00e9vel a tud\u00f3sok rem\u00e9lik, hogy felt\u00e1rj\u00e1k ennek az alapvet\u0151 \u00e9letjellemz\u0151nek a sz\u00e1rmaz\u00e1s\u00e1t \u00e9s jelent\u0151s\u00e9g\u00e9t.<\/p>","protected":false},"excerpt":{"rendered":"<p>Kiralit\u00e1s: Az \u00e9let \u00e9p\u00edt\u0151k\u00f6veinek k\u00e9zis\u00e9ge Mi a kiralit\u00e1s? A kiralit\u00e1s a molekul\u00e1k k\u00e9zis\u00e9get jelenti, vagyis azt, hogy k\u00e9t t\u00fck\u00f6rk\u00e9pes form\u00e1ban l\u00e9tezhetnek. Ak\u00e1rcsak a jobb \u00e9s bal kezed t\u00fck\u00f6rk\u00e9pei egym\u00e1snak, a&hellip;<\/p>\n","protected":false},"author":2,"featured_media":25607,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[288],"tags":[670,1216,667,21833,18135,99,18553,21834],"class_list":["post-16494","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-biology","tag-amino-acids","tag-astrobiology","tag-origins-of-life","tag-chirality","tag-sugars","tag-lifescienceart","tag-handedness","tag-homochirality"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/posts\/16494","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/comments?post=16494"}],"version-history":[{"count":2,"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/posts\/16494\/revisions"}],"predecessor-version":[{"id":25608,"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/posts\/16494\/revisions\/25608"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/media\/25607"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/media?parent=16494"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/categories?post=16494"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/hu\/wp-json\/wp\/v2\/tags?post=16494"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}