helen mason Flashcards
(21 cards)
where is phosphorylation performed
amino acids with hhydroxyl side chains, for example serine
discuss the differences between the two types of endocrine hormones
steroid hormones require transport proteins and have a slow speed of action. bind to and activate transcription factors
peptide hormones do not need a transport protein. cause phosphorylation, which activates proteins. peptide hormones are more rapid than steroid hormones
discuss what type of hormone insulin is and what its receptor is called
insulin is a peptide hormone and its receptor is called receptor tyrosine kinase (RTK)
which gland produces cortisol
adrenal cortex gland
all known mitochondrial genomes code for
cytochrome B
when proteins are bing glycosylated in the ER, which molecule is the oligosaccaride transferred from
dolichol phosphate
where is Bip found and what type of chaperon is it
hsp70
endoplasmic reticulum
where are mucins glycosylated and where does this glycosylation take place
Golgi Apparatus
O-linked
the adenine nucleotide translocator is imported into the mitochondria by what proteins
TOM and TIM22
another term for Km
michaelis constant
what is the RXL recruitment site
a site on the cyclin A subunit, that binds to substrates
where is the ATP acitve site of Cdk
between the alpha and beta domains
how does the glyphosate herbicide work
it inhibits the EPSP synthase
state the name of muscle cells and describe their structure
myofibers are long, thin and multinucleate
what is the name of the cytoplasm in muscle cells
sarcoplasm
what does each myofibre cell consist of
many linear structures called myofibrils
what do myofibrils consist of
sarcomere contractile units
describe the structure of the thin filaments in sacromeres
globular actin units (G actin) forms a fiberous actin protein (F actin), two strands wrap around each other
F actin is connected to Z lines at one end and is capped at the other end by a protein to prevent degradation
tropomyosin is a filamentous protein that wraps arounf F actin
troponin is a three subunit protein placed along the thin filaments
discuss the structure of thick myosin filaments
myosin protein
consists of 2 heavy chains and 4 light chains
two light chains are associated with each hevay chain
what are the name of the receptors on the muscle membrane that bind to Ach from the the presynaptic knob
nicotinoc Ach receptors
describe what type of channel the nicotinic receptor is
a non selective channel that allows influx of Na, K, Ca
