peptide

Translocation

... 19 Translocation of the cell -penetrating Tat peptide across artificial bilayers and into living cells Paul Curnow1,3, Harry Mellor, David J. Stephens, Mark Lorch2 and Paula J. Booth3 ... Full article >>> A chromosomal configuration in which (usually) the ends of two non- homologous c...

Translation

...trans lated into sequence of amino acids in a peptide or protein . Occurs on ribosomes . (Cf. transc...cids to the ribosome , where they are joined by peptide bond s. Full article >>> Translation : The process of decoding a strand of m RNA ,...

Trans

...9 Trans location of the cell -penetrating Tat peptide across artificial bilayers and into living cells Paul Curnow1,3, Harry Mellor, David J. Stephens, Mark Lorch2 and Paula J. Booth3 ... Full article >>> There are many different reasons for gene trans fer : for example, attempting t...

Theory

...of its structure continue to be discovered, using peptide model systems, sitedirected mutagenesis , advances in theory , ... Full article >>> Charles Darwin established evolution as a viable theory by articulating its driving force: natural selection . (Alfred Russell Wallace is commo...

Signal Sequence

...c amino acid sequence which directs a growing peptide chain to be secreted into the endoplasmic reticulum . Full article >>> The N-terminal signal sequence of the protein is recognized by a signal recognition particle (SRP) while the protein is still being synthesized on the ribo...

Segment

...haperones recognize and shield short, hydrophobic peptide segment s in the context of non-native polypeptide s and probably promote folding by decreasing the concentration of aggregationprone intermediates. Full article >>>...

Secondary Structure

...protein due to hydrogen bond formation between peptide linkage s. secondary succession ... Full articl... structure The oxygen or nitrogen atoms of the peptide bond are capable of hydrogen- bonding with hydrogen atoms elsewhere on the molecule . Full articl...

Ribosomes

...cids to the ribosome , where they are joined by peptide bond s. Full article >>> rough endoplasmic reticulum Endoplasmic reticulum when it is covered with ribosomes is referred to as rough ER . Covered in Lab 3 Cell Biology ... Full article >>> Messenger RNA is the...

Ribonuclease

...ectrometry (MS-MS and MS-MS-MS) of a crosslinked peptide pair from bovine ribonuclease A shows a fragmentation pattern that allows confirmation of the identities of the two crosslinked peptides . Full article >>> -rhage burst out -rhea discharge, flowing out -rhexis shredding ribonuclea...

Restriction

...ar order of the amino acids in a protein or peptide . Full article >>> restriction endonuclease s Site -specific endonuclease s causing cleavage of both strand s of DNA at points within or near the specific site recognized by the enzyme . Many generate sticky ends , making...

Residue

...of an amino acid after its incorporation into a peptide chain, with subsequent loss of a water molecule (see Peptide Bond ). Full article >>> The residue s ("tailings") of mines often contain such high concentrations of toxic metals (e.g., copper, lead) that most plant s are unable to...

Regulatory region

...ave been linked to autism. Oxytocin Oxytocin is a peptide of 9 amino acids . It acts on certain smooth muscle s: ... Full article >>> Genetic constructs that include regulatory region s targeting gene expression to specific tissue s are necessary if the gene product is to be harveste...

Proteins

... polymers of amino acids joined head to tail by peptide bond between carboxylic acid group of one amino acid to the amino group of the next. Full article >>> proteins : long chains of amino acid units that are the main molecule s from which living things are constructed. Protista ...

Proteasome

... a key role in normal protein turnover and in peptide presentation by MHC Class I antigen . Full article >>> Ubiquitin is a small protein . It marks a target protein for degradation by attaching covalently to the target. Ubiquitin ated protein is degraded by proteasome . Rela...

Posterior

...rculation. Antidiuretic Hormone (ADH). ADH is a peptide of 9 amino acids . It is also known as arginine vasopressin. Full article >>> posterior or lower part of small intestine Source: Noland, George B. 1983. General Biology , 11th Edition. St. Louis, MO. C. V. Mosby What Topic Is Yo...

Polypeptide

...ule s. The amino acids are linked covalently by peptide bond s. The image shows how three amino acids linked by peptide bond s into a tri peptide . Full article >>> polypeptide a molecule consisting of...

Polyp

...ule s. The amino acids are linked covalently by peptide bond s. The image shows how three amino acids linked by peptide bond s into a tri peptide . Full article >>> polyp loid y the condition in which th...

Polymerase

...composed of multiple amino acid units linked by peptide bond s. Full article >>> polymerase chain re action ( PCR ). A technique for preparing large quantities of DNA from tiny samples, making it easy to clone a specific gene as long as part of the sequence of the gene is kno...

Peptidyl transferase

...f the ribosome responsible for formation of the peptide bond between the nascent polypeptide chain and ...62; The enzyme peptidyl transferase forms a peptide bond between the adjacent amino acids . As this happens, the amino acid on the P site leaves i...

Peptides

...ule s. The amino acids are linked covalently by peptide bond s. The image shows how three amino acids linked by peptide bond s into a tri peptide . Full article >>> Over the last few years, it has been cle...

Peptide Bond

Peptide bond A peptide bond is a chemical bond formed between two molec... of water (H2O). Full article >>> peptide bond [Gk. pepto, to soften, digest] The covalent bond between two amino acid units, formed by con...

Peptide

... their size. Full article >>> poly peptide a molecule consisting of many joined amino ac...2;>> Translation of a specific leader peptide tests for the concentration of a specific amino acid or set of amino acids in the cell . Full...

Penetrance

...show the phenotype ascribed to that genotype . peptide bond ... Full article >>> Penetrance : Refers to the proportion of individuals heterozygous for a given dominant allele that express the phenotype of that dominant allele . Full article >>> Marfan's Syndro...

PCR

...ormed by two or more amino acids linked through peptide bond s: di peptide = two amino acids , oligo peptide = small number of amino acids , etc. Full article >>&...

Pancreas

...nd digestion . Full article >>> A peptide hormone secreted by the islets of Langerhans ... ... Full article >>> Insulin . A peptide hormone secreted by the islets of Langerhans of the pancreas that regulates the level of suga...

Oxygen

...ogen bond s between the carboxyl oxygen of each peptide bond . Ab initio gene prediction ... Full article >>> placenta - embryo nic/maternal organ that serves nutrition al and respiratory functions of the mammalian fetus . It is composed of the embryo nic chorion and maternal uter...

Order

...ar order of the amino acids in a protein or peptide . Full article >>> hapto- bind to haptoglobin serum protein which binds free hemoglobin for trans port to the liver and destruction Haworth perspective formulas A method for representing cyclic chemical structures (sugars) in ...

Oligonucleotide

...cleotide s joined by phosphodiester bond s. oligo peptide A few amino acids (usually less than 50) joined by peptide bond s. Full article >>> Obestatin Oceanic zone Okazaki fragment OKT3[More] Olfactio...

Nuclease

...ar order of the amino acids in a protein or peptide . Full article >>> qv receptor -mediated endocytosis endo nuclease An enzyme that hydrolyzes the interior phosphodiester bond s of a nucleic acid . endoplasmic reticulum An extensive system of double membranes in the cyt...

Neuron

...consists of a cell body and its processes. neuro peptide A hormone produced by secretory nervous tissue . neuropodium Lobe of parapodium nearer the ventral side in polychaete annelids. Full article >>> neuron (nerve cell ) - cell with long processes specialized to receive, condu...

Mutagenesis

...of its structure continue to be discovered, using peptide model systems, sitedirected mutagenesis , advances in theory , ... Full article >>> Filamentous bacteriophages are used to produce single- strand ed DNA for sequencing or in vitro mutagenesis (eg. M13), and as vectors for ...

Mutagen

...of its structure continue to be discovered, using peptide model systems, sitedirected mutagen esis , advances in theory , ... Full article >>> Filamentous bacteriophages are used to produce single- strand ed DNA for sequencing or in vitro mutagen esis (eg. M13), and as vectors ...

Molecule

...62;>> Peptide : A molecule formed by peptide bond s covalently linking two or more amino acids . Full article >>> Polypeptide : A molecule made up of a stri ng of amino acids . A protein is an example of a polypeptide . Proteins : The active molecule s in all cells . ...

Mass spectrometry

...niques are based on mass spectrometry , commonly peptide mass fingerprinting on simpler instruments, or De novo repeat detection sequencing on instruments capable of more than one round of mass spectrometry . Full article >>> To identify and character ise proteins mass spectrometry ,...

Mapping

...or linkage map . Full article >>> peptide mapping The character istic pattern of fragmen...es resulting from hydrolysis of a protein or peptide . AKA peptide finger-printing. Full article >>> Chromosome mapping studies on t...

Lysis

...er known factors. Full article >>> peptide mapping The character istic pattern of fragmen... resulting from hydro lysis of a protein or peptide . AKA peptide finger-printing. Full article >>> polarity of character s -- The s...

Long

...> A long chain of amino acids joined by peptide bond s. Cf. peptide . Related Terms: Amino acid ... Full article >>> One Long Argument: Charles Darwi...

Linkage

... linkage map . Full article >>> peptide bond A planar, amide linkage between the a-amino group of one amino acid and the a-carboxyl group of another, with the elimination of a molecule of water. Full article >>> 5' or 3' end The nucleoside residue s which form nuc...

Leader sequence

...nal pre sequence of scretory proteins such as peptide hormones and membrane proteins . 2] The untranslated sequence at the 5'-ends of m RNA molecule s. Full article >>> The extra leader sequence is found in an abundant 94 nt transcript . The small RNA has a 2,2,7 trimethylgu...

Jejunum

...;> A mixture of peptides , of which an octa peptide (8 amino acids ) is the most active. It is secreted by cells in the duodenum and jejunum when they are exposed to food. It acts ... Full article >>>...

Islets of Langerhans

...the right): ... Full article >>> A peptide hormone secreted by the islets of Langerhans ...ion. Full article >>> Insulin . A peptide hormone secreted by the islets of Langerhans of the pancreas that regulates the level of suga...

Intein

...atalyze their own excision and the formation of a peptide bond between the flanking protein regions. Ful... polypeptide and the splicing together (with a peptide bond ) of the remaining N-terminal and C-terminal segment s. Full article >>> The I...

Insulin

... ... Full article >>> Insulin . A peptide hormone secreted by the islets of Langerhans of the pancreas that regulates the level of sugar in the blood. Interferon. A family of small proteins that stimulate viral resistance in cells . Full article >>> Human Insuli...

Immune response

...e . Antigen icity depends on the ability of the peptide fragments to be presented by the MHC molecule s. Full article >>> Antigen : Any foreign substance, such as a virus , bacterium, or protein that elicits an immune response by stimulating the production of antibodies . Full ar...

Hydrogen bond

...;>> Hydrogen bond ing patterns Because peptide chains have a directionality conferred by their N-terminus and C-terminus , β strand s too can be said to be directional. Full article >>> hydrogen bond A weak bond between two atoms (one of which is hydrogen) with partial but o...

Hydrolysis

...ely in culture . Full article >>> peptide mapping The character istic pattern of fragmen...es resulting from hydrolysis of a protein or peptide . AKA peptide finger-printing. Full article >>> However, more recent studies sugges...

Human

...e . Antigen icity depends on the ability of the peptide fragments to be presented by the MHC molecule s. Full article >>> pineal gland : a human endocrine gland in the midbrain that regulates mating behaviors and day-night cycles. pinocytosis : when the vesicle formed from end...

Hormones

...nal pre sequence of scretory proteins such as peptide hormones and membrane proteins . 2] The untranslated sequence at the 5'-ends of m RNA molecule s. Full article >>> [L. ovarium - ovary ] The female gonad: where primary oocyte s develop into mature eggs through oogenesis . I...

Hormone

...ines such as osteopontin and monocyte chemotactic peptide -1, as well as proteins such as gelatin, collagen IV, fibronectin and casein. Full article >>> A rare inherited dis order that affects the endocrine glands , which release hormone s into the bloodstream. The dis order , also k...

Glycoprotein

...with maximal intrachain hydrogen bond ing of the peptide bond s; ... Full article >>> (ii) P...ive glycoprotein s, e.g.: is a carbohydrate or peptide fragment responsible for the activity? We have proposed the approach that promotes to answer this a...

Glucagon

...agon [Gk. glykys, sweet + ago, to lead toward] A peptide hormone secreted by pancreatic endocrine cells that raises blood glucose levels; an antagonistic hormone to insulin . Full article >>> Glucagon acts principally on the liver where it stimulates the conversion of glycog...

Genetic code

...trans lated into sequence of amino acids in a peptide or protein . Occurs on ribosomes . (Cf. transcription ). Full article >>> translation : the process by which the genetic code is trans ferred to an amino acid sequence in a protein . tricuspid valve : a valve that passes ...

Gastrin

...ines such as osteopontin and monocyte chemotactic peptide -1, as well as proteins such as gelatin, collagen IV, fibronectin and casein. Full article >>>...

Gastric

...ll article >>> Gastric inhibitory peptide (GIP) and entero glucagon decrease both gastric acid and motility. Full article >>> Gastric Juice collective name for the secretions of the stomach lining containing HCl pepsin and other chemicals (gastro = stomach ) Gastrin ...

Enzyme

...2;> peptidase An enzyme that hydrolyzes a peptide bond . peptide Two or more amino acids covalently joined by peptide bond s. Full article >>> Aux...

Endoplasmic reticulum

...> After removal of the 24-amino-acid signal peptide from prepro insulin to form pro insulin , the latter polypeptide is further processed in the endoplasmic reticulum . This produces the final hormone , insulin , which is released from the cell . Full article >>>...

Endonuclease

...ar order of the amino acids in a protein or peptide . Full article >>> restriction endonuclease s Site -specific endonuclease s causing cleavage of both strand s of DNA at points within or near the specific site recognized by the enzyme . Many generate sticky ends , making...

Endocrine glands

...Thyrotropin-releasing hormone (TRH) TRH is a tri peptide (GluHisPro). When it reaches the anterior lobe of the pituitary it stimulates the release there of ... Full article >>>...

Elements

...atalyze their own excision and the formation of a peptide bond between the flanking protein regions. Full article >>> pleo- more than usual polar Molecule s which contain elements differing in electronegativity, making them soluble in water. polarity Depending on the context meaning o...

Cytoplasm

... a key role in normal protein turnover and in peptide presentation by MHC Class I antigen . Full article >>> Golgi apparatus - a net-like structure in the cytoplasm of animal cells (especially in those cells that produce secretions) Synonyms: Golgi body, Golgi complex, dicty...