Featured Pathways
Methylococcus capsulatus is an obligate, Gram-negative methanotroph. It generally use the greenhouse gas Methane as a sole carbon and energy source for growth, thus playing major roles in global carbon cycles, and in particular, substantially reducing emissions of biologically generated Methane to the atmosphere. Methylococcus capsulatus is the first complete genome sequence reported[..]
Eukaryotic cells are characterized by extensive subcellular compartmentation whose structural basis is the existence of a number of highly specialized membrane-bound organelles. Each of these organelles is equipped with a specific subset of proteins allowing them to fulfill specific tasks in cellular metabolism. Mitochondria are present in virtually all eukaryotic cells. Mitochondria are the[..]
Presenilins are polytopic transmembrane proteins, mutations in which are associated with the occurrence of Early-onset familial Alzheimer's disease, a rare form of the disease that results from a single-gene mutation. The physiological functions of Presenilins are unknown, but they may be related to Developmental signaling, Apoptotic signal transduction, or processing of selected proteins, such[..]
G-proteins are heterotrimers, consisting of Alpha, Beta and Gamma subunits, and are involved in signaling to distinct effectors. Heterotrimeric G-proteins convey extracellular signals that activate 7-transmembrane-spanning GPCRs (G-Protein-Coupled Receptors) to the inside of cells, communicating this information to effector proteins and thus initiating changes in cell behaviour. GPCRs constitute[..]
GPCR (G-Protein-Coupled Receptors) constitute a large and diverse family of proteins whose primary function is to transduce extracellular stimuli into intracellular signals. They are among the largest and most diverse protein families in mammalian genomes. Also termed Serpentine receptors, GPCRs are polytopic membrane proteins that share a common structure with seven transmembrane segments, but[..]
The heterotrimeric G-Proteins (Guanine nucleotide-binding Proteins) are signal transducers that communicate signals from many hormones, neurotransmitters, chemokines, and autocrine and paracrine factors. The extracellular signals are received by members of a large superfamily of receptors with seven membrane-spanning regions, known as GPCR (G-Protein Coupled Receptor), that activate the[..]
G-proteins (Guanine Nucleotide-Binding Proteins) are heterotrimeric proteins that mediate signal transduction between many membrane-bound receptors and intracellular effectors. Traditionally, activation of heterotrimeric G-proteins is accomplished exclusively by the action of GPCRs (G-Protein Coupled Receptors), Seven transmembrane-spanning proteins that typically reside in the Plasma membrane.[..]
Coagulation is a dynamic process which involves the regulated sequence of proteolytic activation of a series of zymogens to achieve appropriate and timely haemostasis in an injured vessel, in an environment that overwhelmingly favours an anticoagulant state [Ref.1 & 2]. There are two main mechanisms for triggering the blood clotting, termed as the contact pathway/intrinsic pathway and the tissue[..]
Thrombin/TFIIa (Activated Factor-II) is a coagulation protein that has many effects in the Coagulation cascade, the homeostatic process of greatest interest. It is a multifunctional serine proteinase best known for its ability to cleave Fibrinogen to Fibrin. Fibrin forms an essential component of the Blood Clot. When a blood vessel is injured, bleeding is stopped by clotting factors which[..]
Vitamin-C (Ascorbate or Ascorbic Acid) is an essential water-soluble Vitamin, well known for its antiscorbutic and antioxidant functions in humans. Vitamin-C was first identified by virtue of the essential role it plays in Collagen modification, preventing the nutritional deficiency Scurvy. Vitamin-C acts as a cofactor for the P4H (Prolyl[..]
