Biochemical research on oogenesis: Oocytes of Xenopus laevis synthesize but do not accumulate 5S RNA of somatic type☆
[摘要] Theoocytesofamphibiansandteleostsbegintoaccumulate5SRNAseveralmonthsbeforeothercomponentsoftheribosomesbecomeavailable.Twotypesofgenescodingfor5SRNAareactiveduringoogenesisoftheseanimals.Onetypeofgenesisexpressedonlyinoocytes.Theothertypeisexpressedinbothoocytesandsomaticcells.Inthispaper,weshowthattheoocytesofXenopuslaevisdonotaccumulate5SRNAofsomatictype.Weconcludethattheproductsofthetwotypesofgenesbehavedifferentlyduringoogenesis.Oneproductisstoredbytheoocytes,whereastheotherisnot.Theheterogeneityof5SgenesinXenopuslaevismighthavearisenbecauseoocytesandsomaticcellsneededdifferentkindsof5SRNA.Theseneedsaremetbymoleculeshavingdifferentprimarystructures,differentconformations,anddifferentmetabolicstabilitiesinvivo.Wedonotunderstandhowthesepropertiesarerelatedtooneanother.
[发布日期] [发布机构]
[效力级别] [学科分类] 生物科学（综合）
[关键词] [时效性]
