Cloning, expression and purification of cytochrome c(6) from the brown alga Hizikia fusiformis and complete X-ray diffraction analysis of the structure.
The primary sequence of cytochrome c(6) from the brown alga Hizikia fusiformis has been determined by cDNA cloning and the crystal structure has been solved at 1.6 A resolution. The crystal belonged to the tetragonal space group P4(1)2(1)2, with unit-cell parameters a = b = 84.58, c = 232.91 A and six molecules per asymmetric unit. The genome code, amino-acid sequence and crystal structure of H. fusiformis cytochrome c(6) were most similar to those of red algal cytochrome c(6). These results support the hypothesis that brown algae acquired their chloroplasts via secondary endosymbiosis involving a red algal endosymbiont and a eukaryote host.
Akazaki
Hideharu
H
Bio-organic Chemistry Laboratory, Graduate School of Bioresource Sciences, Nihon University, Kameino 1866, Fujisawa-shi, Kanagawa 252-8510, Japan.
Kawai
Fumihiro
F
Chida
Hirotaka
H
Matsumoto
Yuichirou
Y
Hirayama
Mao
M
Hoshikawa
Ken
K
Unzai
Satoru
S
Hakamata
Wataru
W
Nishio
Toshiyuki
T
Park
Sam Yong
SY
Oku
Tadatake
T
D001483:Base Sequence; D003001:Cloning, Molecular; D018360:Crystallography, X-Ray; D045365:Cytochromes c6 / Q000737:chemistry / Q000235:genetics* / Q000302:isolation & purification*; D017931:DNA Primers; D000459:Phaeophyceae / Q000201:enzymology*; D011487:Protein Conformation
D045365:Cytochromes c6; D017931:DNA Primers