CHE 121 Lecture Notes - Lecture 16: Lactate Dehydrogenase, Alanine, Myoglobin

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22 Dec 2016
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PROTEINS
1) _________ are biomolecules that
contain many amide bonds, formed
by joining acids
2) ______ _______ contain two
functional groups ( amino and
carboxyl)
3) ___ group determines the identity of
the amino acid
4) ____ amino acids occur naturally in
proteins
5) Humans can synthesize ___ out of
____
6) Remaining ____ are essential amino
acids
7) Amino acids contain both a base and
an acid, proton transfers form the
acid to the base from
_______________
8) The pH at which the amino acid
exist as a zwitterion is called its
____________ _____ (pI)
9) When pH<pI, carboxylate anion:
10) When pH>pI, ammonium cation:
11) Peptides and proteins are formed
when amino acids bind together in
an ___________ bond
12) A ___________ contains two amino
acids
13) A __________ contains three amino
acids
14) Polypeptides have:
15) __________ have more than 40
amino acids
16) __________ structure of a protein is
the sequence of amino acids joined
together by peptide bonds
17) _____________ structure is the 3D
arrangement of localized regions of
a protein
1) Proteins
2) Amino acids
3) R group
4) 20 amino acids
5) 10 out of the 20
6) 10
7) zwitterions
8) isoelectric point
9) gains a proton
10) loses a proton
11) peptide bond
12) dipeptide
13) tripeptide
14) amino acids
15) Proteins
16) Primary structure
17) Secondary structure
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18) Secondary structure is held together
by what bonding?
19)
what is this?
20) ___-helix- peptide chain twists into a
spiral
21)
What is this?
22) ___-sheets= two or more peptide
chains line up side by side
23) _________ structure is the overall
3D shape.
24) Tertiary structure is the ________
side chains go to the interior of the
structure. ___________ functional
groups are on the EXTERIOR.
18) Hydrogen bonding
19) Secondary structure, a-helix
20) a-helix
21) Secondary structure, beta-sheets
22) Beta sheets
23) Tertiary structure
24) Nonpolar-interior, polar-exterior
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25) What is this?
26) ___________ structure is the overall
shape when two or more
polypeptide chains come together in
one complex.
27) _________ consists of two separate
chains linked by intermolecular
disulfide bonds
28) ____________ has four subunits
held together by intermolecular
forces
29) ___-________ are the proteins
found in hair, hooves, nails, skin and
wool
30) alpha keratin are composed of long
sections of __________ units, having
large numbers of alanine and
leucine
31) From above, these coils wind around
other coils making larger and
stronger structures like:
32) ___________ requires three chains
in a superhelix
25) Tertiary structure
26) Quaternary structure
27) Insulin
28) Hemoglobin
29) Alpha keratin
30) Alpha helix
31) Hair
32) Collagen
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