Ch 4 Flashcards
(55 cards)
Satellite RNA
ssRNA genome, needs another virus to replicate, ex hepatitis
Virusoids
SsRNA genome, like viroids with capsid, need helper virus to replicate
Proteins are made of
Amino acids, chain like polymer
Four types of Amino acid
Acidic, basic, polar, and non polar
Amino acids are bound by
Peptide bonds with a condensation reaction
Residues
When amino acids are joined in a series ofpeptide bonds
Peptide
Short chain of amino acids
Coding/sense strand
Same as RNA, but U is used instead of T
Antisense strand/ template strand is read
3’to 5’, read by RNA polymerase
How many codons possible
64
Synonymous codon
Two diff codons with the same amino acid associated
Degenerate code
Some codons can mean the same thing
One tRNA can recognize more than one codon with
Wobble
Wobble
tRNA specific to a particular amino acid recognize multiple codon triplets that differ only in the third letter
Modified bases on tRNA anti codon allow for
Recognition of more codons by one tRNA
What amino acid isomer do living organism usually use
L-amino acids for protein making
Dalton unit
Molecular weight of protein, average amino 110 da
Protein primary structure
Amino acids
Secondary structure
Amino acids reacting to fold, stabilized with hydrogen bonds
Three protein secondary structures
A helix, b pleated sheet, unstructured turn
A helix
Most common, helical structure stabilized with h bonds with aminos, proline prevents helix
Beta pleated
Secondary common, h bonds between backbone, can be parallel or antiparrallel
Unstructured turns
Allow for helix and pleats to interact, short loops
Tertiary structure of protien
3D shape of one polypeptide,
Stabilized with hydrophobic interactions, hydrogens bonds, van Dee walls, just non covalent stuff
