Structural Investigation of Invertebrate Hemoglobins Using the
Stem
1980 ◽
Vol 38
◽
pp. 676-677
Keyword(s):
Scanning transmission electron microscopy (STEM) was used to study the structure of the extracellular hemoglobins of the annelids Lumbricus, Arenicola, and Nephtys. These are giant molecules, possessing a molecular weight of 3-4 x IO6,a sedimentation constant of about 60s and consisting of about five to seven different polypeptide chains (1,2,3). The samples were diluted to 100-200μg/ml with distilled water just before application to a very thin(∽15Å) carbon substrate supported on a microgrid. One percent (w/v) uranyl acetate solution was used for negative staining for 2 min. and dried in air. The specimens were examined with an electron energy of 22-35keV.
1981 ◽
Vol 39
◽
pp. 432-433
1970 ◽
Vol 28
◽
pp. 6-7
1981 ◽
Vol 39
◽
pp. 38-39
Keyword(s):
1986 ◽
Vol 44
◽
pp. 684-687
1990 ◽
Vol 48
(3)
◽
pp. 900-901
1980 ◽
Vol 38
◽
pp. 242-245
1988 ◽
Vol 263
(32)
◽
pp. 16954-16962
◽