70 S Escherichia coli ribosomes were reacted with the fluorescent dye N-(iodoacetylaminoethyl)-5-naphthylamine-1-sulfonic acid for 10 min under mild conditions. The resulting ribosomes were fully active. 30 S subunits isolated from these particles were also fully active. They contain approximately 0.7 eq of fluorescent dye. Nearly all of it is attached to protein S18. Competitive reaction with ...

Transport if loaded uclear transporters can be viewed as taxis that move cargo across the nuclear envelope. On page 649, Plafker et al. report that importin-11, a nuclear transport receptor , may be an especially selective cabbie. Importin-11 transports UbcM2, a ubiquitin (Ub)-conjugating enzyme, but it does so only when the enzyme is charged with a Ub at its active site. UbcM2 is an E2 enzyme,...

Hasil Ujian Nasional (UN) SMA pada mata pelajaran matematika di tahun 2018 mengalami penurunan yang sangat signifikan yaitu 4,67% dibandingkan dengan hasil UN 2 sebelumnya. Penelitian ini bertujuan untuk mendeskripsikan pemahaman siswa ditinjau dari teori APOS (Aksi, Proses, Objek, dan Skema) mengetahui penyebab turunnya letak siswa. Jenis penelitian menggunakan deskriptif pendekatan kualitatif...

Literacy is a basic reading skill in modern society. The development of literacy questions needed to be useful as an assessment function. needs pay attention the principle conformity with indicators and characteristics items. A total 167 fifth grade elementary school students were sampled test instrument for test. Instrument testing was carried out two stages; first, content validity by seven e...