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We present studies on a series of photosynthetic reaction center (RC) mutants created in the background of the Rhodobacter capsulatus D(LL) mutant, in which the D helix of the M subunit has been subst...
The triplet state of aromatic molecules forms and decays by intersystem crossing, as originally demonstrated by Kasha and Lewis. By contrast, the triplet state of the primary electron donor, 3 P, in p...
Nitric oxide (NO) binds to the myoglobin (Mb) cavity mutant, H93G, forming either a 5- or 6-coordinate Fe--NO heme complex. The H93G mutation replaces the proximal histidine of Mb with glycine, allowi...
The electronic absorption line shape and Stark spectrum of the lowest energy Q(y)() transition of the special pair in bacterial reaction centers contain a wealth of information on mixing with charge t...
The carbon monoxide (CO) binding constants of human myoglobin (Mb) and several single-site mutants have been determined using two different methods. In the kinetic method, which is commonly used for t...
Flash photolysis studies of NO recombination to heme proteins offer a direct probe of protein structural changes on the tens of picoseconds timescale where they can be compared with molecular dynamics...
We have recently reported spectroscopic evidence for structural relaxation of myoglobin (Mb) following photodissociation of MbCO [Lambright, D. G., Balasubramanian, S., & Boxer, S. G. (1991) Chem. Phy...
The infrared spectra of CO bound to human myoglobin and myoglobin mutants at positions His-64, Val-68, Asp-60, and Lys-45 on the distal side have been measured between 100 and 300 K. Large differences...
The kinetics of CO recombination to site-specific mutants of human myoglobin have been studied by flash photolysis in the temperature range 250-320 K on the nanosecond to second time scale in 75% glyc...
Site-specific mutants of human myoglobin have been prepared in which lysine 45 is replaced by arginine (K45R) and aspartate 60 by glutamate (D60E), in order to examine the influence of these residues ...
摘要新的家蚕白色卵突变系BT924是由蓖麻蚕DNA导入家蚕品种苏学5诱导获得。性状特征:滞育卵当年白色,越年后呈浅黄褐色;蛾区内及区间卵色略有变异,幼虫皮肤低度透明,成虫复眼黑色。采用家蚕卵色正常型(黑卵)和突变型红色卵(re)、桃红眼白卵(pe)、第2白卵(w-2)、第3白卵(w-3)及BH863油蚕白卵(w-3bh)与之杂交,进行遗传分析,结果表明,BT924白卵及其油蚕性状由隐性单基因控制,...

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