Translation/Metabolism Flashcards
translation substeps
Initiation, elongation, and termination
the formation of a 30s and 50s rRNA initiation complex
initiation
r-RNA means ribosomal RNA, ____ and ___are the sizes of two parts of the ribosome. If they are joined, they are called ____ ribosome
30s and 50s, 70s
All protein synthesis begins with the ____ initiation codon
AUG
_____ called initiation factors, and the ___ bond energy from GTP should also be present
3 proteins, phosphate
Initial AUG encodes for ____ (special amino acid); middle AUG encodes
N-formyl methionine, regular methionine
ten nucleotides upstream the initial AUG
Shine-Delgarno box
uses tRNA with attached amino acids as decoders
Elongation
match the codons on mRNA
anti codons
the mRNA ___ the ribosome then the ribosome reads the message. Upon reading, the ____ produces polypeptides. Once the ___ enters the ribosome, the tRNA helps to produce _____
approaches, ribosome, polypeptide
UAA, UAG, and UGA signals to ____. AUG is the ____
stop, initiation
Translation start codon
AUG
Two sites on the ribosome for the tRNA
P and A
the ribosome is moving to balance the elongating polypeptide chain
Rachet mechanism
single m-RNA can be read simultaneously by
10 to 20