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At least 793 records · Page 44Linked to original sources
PubMed1984

The primary structure of spinach acyl carrier protein.

Acyl carrier protein (ACP) from spinach leaves has been purified to homogeneity by high-performance liquid chromatography with an anion-exchange column. The amino acid sequence of one major ACP in spinach leaves, ACP-I, has been determined by automated Edman degradation. It consists of the following 82 amino acids: (sequence in text). Sequencing of the intact polypeptide provided data for the first 57 residues. Cleavage of the succinylated ACP with CNBr at Met-46, followed by sequencing of the fragment mixture, provided data for the final 36 residues. The C-terminal alanine was confirmed by carboxypeptidase Y digestion. The spinach ACP has 40, 70, and 25% homology with Escherichia coli, barley, and rabbit ACPs, respectively. The results not only provide the first complete sequence of a plant ACP, but also provide insight into the structural and evolutionary relationships among plant, animal, and bacterial ACPs.

Acyl Carrier Protein↗
PubMed1989

A priori predictions of the rotational constants for HC13N, HC15N, C5O.

Ab initio molecular orbital theory is used to estimate the rotational constant for several carbon-chain molecules that are candidates for discovery in interstellar space. These estimated rotational constants can be used in laboratory or astronomical searches for the molecules. The rotational constant for HC13N is estimated to be 0.1073 +/- 0.0002 GHz and its dipole moment 5.4 D. The rotational constant for HC15N is estimated to be 0.0724 GHz, with a somewhat larger uncertainty. The rotational constant of C5O is estimated to be 1.360 +/- 2% GHz and its dipole moment 4.4. D.

Carbon↗
PubMed1995

Energy conversion at liquid/liquid interfaces: artificial photosynthetic systems.

This chapter focuses on multielectron reactions in organized assemblies of molecules at the liquid/liquid interface. We describe the thermodynamic and kinetic parameters of such reactions, including the structure of the reaction centers, charge movement along the electron transfer pathways, and the role of electric double layers in artificial photosynthesis. Some examples of artificial photosynthesis at the oil/water interface are considered, including water photooxidation to the molecular oxygen, oxygen photoreduction, photosynthesis of amphiphilic compounds and proton evolution by photochemical processes.

Chlorophyll↗
PubMed1983

Lamprey 48-kDa lens protein represents a novel class of crystallins.

SDS-PAGE revealed a major Mr 48 000 polypeptide of pI around 8 in the water-soluble fraction of lamprey lenses. It occurs as a monomeric protein, and its amino acid composition and tryptic peptides show no resemblances to alpha-, beta-, gamma- or delta-crystallin. Immunoblotting with antiserum against the 48-kDa protein revealed an immunologically related polypeptide of similar Mr in reptiles, several birds and a fish, but showed no cross-reactivity with any other water-soluble lens component. The 48-kDa protein is not detected in many birds and fishes, and in the investigated mammals and amphibians.

Amino Acids↗