Search results
Results from the WOW.Com Content Network
Chlorophyll b is made by the same enzyme acting on chlorophyllide b. The same is known for chlorophyll d and f, both made from corresponding chlorophyllides ultimately made from chlorophyllide a. [39] In Angiosperm plants, the later steps in the biosynthetic pathway are light-dependent. Such plants are pale if grown in darkness.
Chlorophyll a, b, and d. Chlorophyll synthase [14] completes the biosynthesis of chlorophyll a by catalysing the reaction EC 2.5.1.62. chlorophyllide a + phytyl diphosphate chlorophyll a + diphosphate. This forms an ester of the carboxylic acid group in chlorophyllide a with the 20-carbon diterpene alcohol phytol.
Crystal structure of the soluble peridinin-chlorophyll-protein complex from the photosynthetic dinoflagellate Amphidinium carterae.This complex is found in many photosynthetic dinoflagellates and involves a boat or cradle-shaped protein with two pseudosymmetrical repeats of eight alpha helices (shown in blue and orange) wrapped around a pigment-filled central cavity.
Photosynthetic reaction centre genes from PSII (PsbA, PsbD) have been discovered within marine bacteriophage. [12] [13] [14] Though it is widely accepted dogma that arbitrary pieces of DNA can be borne by phage between hosts (transduction), one would hardly expect to find transduced DNA within a large number of viruses. Transduction is presumed ...
The peridinin-chlorophyll-protein complex (PCP or PerCP) is a soluble molecular complex consisting of the peridinin-chlorophyll a-protein bound to peridinin, chlorophyll, and lipids. The peridinin molecules absorb light in the blue-green wavelengths (470 to 550 nm) and transfer energy to the chlorophyll molecules with extremely high efficiency.
The simplicity of retinal pigments in comparison to the more complex chlorophyll, their association with isoprenoid lipids in the cell membrane, as well as the discovery of archaeal membrane components in ancient sediments on the Early Earth are consistent with an early appearance of life forms with purple membranes prior to the turquoise of ...
The chlorophyll a/b-binding protein gene, otherwise known as the CAB gene, is one of the most thoroughly characterized clock-regulated genes in plants. [1] There are a variety of CAB proteins that are derived from this gene family. Studies on Arabidopsis plants have shed light on the mechanisms of biological clocks under the regulation of CAB ...
They were discovered by C. B. van Niel in 1932. [1] They are related to chlorophylls , which are the primary pigments in plants , algae , and cyanobacteria . Organisms that contain bacteriochlorophyll conduct photosynthesis to sustain their energy requirements, but the process is anoxygenic and does not produce oxygen as a byproduct .