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Anomalous electron transport activity in a Photosystem I-deficient maize mutant (1990)

Cook, William B. ; Miles, Donald

Springer

Photosynthesis research 24 (1990), S. 81-88

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ISSN: 1573-5079

Keywords: CP1 ; electron transport ; hcf ; mutant ; Photosystem I ; transposable element

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Abstract Photosynthesis mutations were induced in maize lines bearing the transposable DNA element system, Mutator. Two Photosystem I mutants (hcf101 and hcf104) which were isolated are described here. Maize plants homozygous for the hcf104 mutation are seedling lethal and exhibit a high in vivo chlorophyll fluorescence yield. They lack ∼60% of CP1, P700 and PSI-specific electron transport activity relative to normal sibling plants. The comparable depletion of these three measures of PS I content conforms to the pattern reported for many other PS I-deficient mutants. Maize plants homozygous for hcf101 are seedling lethal and also exhibit high in vivo chlorophyll fluorescence yield. They lack 80–90% of CP1 and P700 but sustain steady state levels of PS I-specific electron transport activity at 70% of normal. Previous reports of similar apparent PS I hyperactivity are discussed and an explanation for the elevated steady state level of PS I electron transport activity in hcf101 is proposed.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00032647

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Crystallization and preliminary X-ray investigation of recombinant human interleukin 10 (1995)

Cook, William J. ; Windsor, William T. ; Murgolo, Nicholas J. ; [et al.]

New York, NY : Wiley-Blackwell

Proteins: Structure, Function, and Genetics 22 (1995), S. 187-190

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ISSN: 0887-3585

Keywords: cytokine ; BCRF1 ; protein structure ; crystal seeding ; Chemistry ; Biochemistry and Biotechnology

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Medicine

Notes: Crystals of recombinant human interleukin 10 have been grown from solutions of ammonium sulfate. The crystals are tetragonal, space group P41212 or P43212; the unit cell axes are a = 36.5 Å and c = 221.9 Å. There is the equivalent of one polypeptide chain in the asymmetric unit. The crystals are stable to X-rays and diffract to at least 2.5 Å resolution. © 1995 Wiley-Liss, Inc.

Additional Material: 1 Ill.