73 results found

Search Results for: polypeptide

Polypeptide

Polypeptide Definition Biology What are polypeptides? A polypeptide is defined as a polymer of amino acids joined together... Read More

Protein

Protein Definition Proteins are biomolecules comprised of amino acid residues joined together by peptide bonds.... Read More

Frameshift mutation

Define Frameshift Mutation What is a frameshift mutation? In biology, insertions or deletions of nucleotides in the coding... Read More

Translation

In biology, translation is a step in protein biosynthesis where a genetic code from a strand of mRNA is decoded to produce a... Read More

Chemical Composition of the Body

In order to fully understand the mechanisms of human physiology, it is important to have an understanding of the chemical... Read More

Protein synthesis

Protein synthesis is the process of creating protein molecules. In biological systems, it involves amino acid synthesis,... Read More

Genetic Information and Protein Synthesis

Genetic Code Genes are sequences of DNA nucleotides that carry and transmit the information specifying amino acid sequences... Read More

Collagen fiber

Definition of collagen fiber Collagen fiber is the fiber in the extracellular matrix of connective tissues characterized... Read More

Biuret test

Definition noun A chemical test that detects any compound containing two or more peptide bonds Supplement Biuret test is... Read More

Lipotropin

Definition noun, plural: lipotropins A polypeptide hormone of the anterior pituitary gland, presumably acts by promoting fat... Read More

Growth hormone

Definition noun, plural: growth hormones A polypeptide hormone that in humans and other animals essentially promotes... Read More

Degenerate

Degenerate means to become worse or less of its kind or former state. In biology, it means an entity performs the same... Read More

Cornification

Definition noun, plural: cornifications The process of forming a keratinized, horny layer of epidermis cornified,... Read More

Hemoglobinopathy

Definition noun, plural: hemoglobinopathies A genetic disorder resulting in an abnormal globin structure in the hemoglobin... Read More

Micromolecule

Micromolecules Definition How to define micromolecule? Micromolecules are relatively small molecules that are combined... Read More

Transfer ribonucleic acid

Definition noun plural: transfer ribonucleic acids trans•fer ri•bo•nu•cle•ic ac•id, ˈtɹænsfɝ... Read More

Tropocollagen

Definition noun, plural: tropocollagens A single collagen molecule; a molecular structure that makes up a collagen fiber,... Read More

Oligopeptide

Definition noun, plural: oligopeptides A peptide comprised of relatively small number of amino acid residues (i.e. about two... Read More

Follicle-stimulating hormone

Definition noun, plural: follicle-stimulating hormones A gonadotropin released by the gonadotropes of the anterior... Read More

Glycoprotein

Definition noun, plural: glycoproteins Any of the conjugated proteins, characterized by having one or more... Read More

Residue

Definition noun, plural: residues (1) (biochemistry) Any of the monomers comprising a polymer, or any of the parts that... Read More

Primary structure

Definition noun (biochemistry) A structure of a biological molecule in which there is a precise sequence or order of... Read More

Transmembrane proteins

transmembrane protein (Science: cell biology) A protein subunit in which the polypeptide chain is exposed on both sides of... Read More

Secondary structure

Definition noun A structure of a biological molecule characterized by the local folding within the biopolymer as a result... Read More

Mucopeptide

Definition noun A crystal lattice structure in the bacterial cell wall that is made up of linear chains of alternating amino... Read More

Monomer

Definition noun, plural: monomers (1) A molecule that may react chemically to another molecule of the same type to form a... Read More

Quaternary structure

Definition noun A structural level wherein several proteins (or polypeptide subunits) interact through non-covalent bonds to... Read More

A Protein Being Born – a live cell imaging of RNA translation

You probably already heard the concepts of translation in the central dogma of molecular biology. The dogma is an... Read More

Genetic Control – On and Off Genes

Reviewed by: Mary Anne Clark, Ph.D. This lesson looks at the various factors involved that affect growth and... Read More

Mitochondrial DNA

Mitochondrial DNA Definition noun plural: mitochondrial DNAs The genetic material in the mitochondrion that carries code... Read More

Islets of Langerhans

Definition noun The endocrine region of the pancreas, i.e. pancreatic cells that produce hormones, mainly glucagon and... Read More

Protein Variety

The sequence of amino acids determines which type of protein it is. It is synthesized from a DNA strand, each DNA strand... Read More

Chromosome Mutations – II

Reviewed by: Mary Anne Clark, Ph.D. This page is a continuation of the previous tutorial, Chromosome Mutations... Read More

G cell

Definition noun, plural: G cells The cell that secretes gastrin, and chiefly located in the stomach and... Read More

Galactosamine

Definition noun, plural: galactosamines A hexosamine, where galactose contains an amine (-NH2) instead of a hydroxyl (–OH)... Read More

Myoglobin

myoglobin (Science: physiology) protein (17.5 kD) found in red skeletal muscle. It was the first protein for which the... Read More

Immunoglobulin A

Definition noun An immunoglobulin (antibody) that is characterized by its α-heavy chain, and its prevalence in mucous... Read More

Somatotroph

Definition noun, plural: somatotrophs The hormone-secreting cell in the anterior pituitary that particularly releases... Read More

Role of Golgi Apparatus & Endoplasmic Reticulum in Protein Synthesis

Continued from the previous tutorial that introduces protein synthesis... mRNA and tRNA mRNA leaves the nucleus and enters... Read More

Transcription (biology)

In biology, transcription is the process of transcribing or making a copy of the genetic information stored in a DNA strand... Read More