Navigation Links
Polyp


Polypeptides are chains of amino acids. Proteins are made up of one or more polypeptide molecules.
The amino acids are linked covalently by peptide bonds. The image shows how three amino acids linked by peptide bonds into a tripeptide.
Full article >>>

polyploidy
the condition in which the number of chromosome sets in an individual or cell is three or more times the haploid set; 3n, 4n, etc.
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
Full article >>>

Polyploidy is the condition of cells or organisms that contain more than two copies of each of their chromosomes. Where an organism is normally diploid, some spontaneous aberrations may occur which are usually caused by a hampered cell division.
Full article >>>

Chapter 7
Plant polyphenols: free radical scavengers or chain-breaking antioxidants?
Catherine Rice-Evans
Free Radical Research Group, Division of Biochemistry and Molecular Biology, UMDS-Guy's Hospital, St. Thomas Street, London SE1 9RT, U.K.
Full article >>>

Polyploidy is the state where all cells have multiple pairs of chromosomes beyond the basic set. Polyploidy is common in plants, and rare in animals.
Categories: Classical genetics
Top Encyclopedia Articles ...
Full article >>>

Polyploidy is a major evolutionary mechanism in plants. Approximately 47% of all flowering plants are polyploid.
Some examples of polyploid plant species are corn, wheat, cotton, sugarcane, apples, bananas, watermelons, and many flowers.
Full article >>>

Polyploidy in which all the chromosomes come from the same species; the polyploid is formed by the doubling of a single genome.
Related Terms: Polyploid ...
Full article >>>

Polyphyletic taxa are considered "unnatural", and usually are reclassified once they are discovered to be polyphyletic.
Examples : marine mammals, bipedal mammals, flying vertebrates, trees, algae, etc.
Full article >>>

polyploid produced by the hybridization of two species. See amphidiploid.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
Full article >>>

Polyp. An individual of a solitary coelenterate or one member of a coelenterate colony
Polyphyletic. Refers to a group of species that do not have one common ancestor species
Population density. Number of individuals per unit area or volume ...
Full article >>>

Polypeptide A protein or part of a protein made of a chain of amino acids joined by a peptide bond.
Population genetics The study of variation in genes among a group of individuals.
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 molecules in all cells. Proteins control biochemical reactions and determine the physical structure of organisms.
Full article >>>

polyphyletic
Pertaining to a taxon whose members were derived from two or more ancestral forms not common to all members.
polyploid ...
Full article >>>

polyploidy Abnormal variation in the number of chromosome sets. The condition when a cell or organism has more than the customary two sets of chromosomes.
Full article >>>

POLYPEPTIDE - See PEPTIDE.
pre-mRNA - An RNA molecule which is transcribed from chromosomal DNA in the nucleus of eukaryotic cells, ...
Full article >>>

Polypeptide (protein). A polymer composed of multiple amino acid units linked by peptide bonds.
Polyploid. A multiple of the haploid chromosome number that results from chromosome replication without nuclear division.
Full article >>>

polyp Individual of the phylum Cnidaria, generally adapted for attachment to the substratum at the aboral end, often form colonies.
polypeptide A molecule consisting of many joined amino acids, not as complex as a protein.
Full article >>>

polyp
The asexual reproducing, normally sedentary form of coelenterates such as the sea anemone.
Full article >>>

Polypeptide: See Peptide.
Polyprotein: A giant polypeptide that contains multiple individual protein sequences embedded within it and which must be proteolytically cleaved to yield the individual proteins.
Full article >>>

Polypeptide a chain of amino acids bonded together
(poly = many; pepti = digested cooked)
Polypetalous term used to refer to a plant with un-united flower parts attached to the receptacle
(poly = many; petal = a leaf spread out flat) ...
Full article >>>

A polypeptide secreted by bacteria which inhibit or prevent the growth of related bacteria which lack the corresponding colicin immunity proteins. Colicins are encoded by a group of naturally occurring plasmids first found in E. coli (e.g.
Full article >>>

Some intein polypeptides are site-specific endonucleases as well as protein splicing catalysts. Endonuclease action results in insertion of the intein nucleic acid in a target site.
Facts ...
Full article >>>

A DNA sequence that codes for a specific polypeptide; a gene. See DNA, Gene. Clone. An exact genetic replica of a specific gene or an entire organism. See Cloning. Cloning.
Full article >>>

pleated sheet The side-by-side, hydrogen-bonded arrangement of polypeptide chains in the extended conformation. pleo- more than usual polar Molecules which contain elements differing in electronegativity, making them soluble in water.
Full article >>>

N- or C-terminal The amino acids which form polypeptides are joined by peptide bonds between the amino group of one amino acid and the carboxy group of the next.
Full article >>>

While determining the polypeptide sequence resulting from gene translation is straightforward, determining the actual three-dimensional (3D) structure requires some sophisticated experimental techniques.
Full article >>>

Speciation through hybridization and/or polyploidy has long been considered much less important in animals than in plants [[[refs.]]]. A number of reviews suggest that this view may be mistaken.
Full article >>>

The polypeptide is ultimately folded into a 3-dimensional protein structure, which will go on to perform some specific function in the cell such as an enzyme subunit or cell membrane component.
Full article >>>

Amino acids bind by forming a peptide bond.
Linear polymers of amino acids are called polypeptides.
Large polypeptides are called proteins.
A restricted set of 20 amino acids constitute the universal building blocks of proteins.
Full article >>>

(a small protein having two polypeptide chains) and immunoglobulin molecules, for example, have
interchain
and
intrachain
disulfide bonds. Endothelin and HLA molecules also have disulfide bonds.
Full article >>>

translation - process whereby mRNA code is used by the ribosome to synthesize a polypeptide chain (protein) from amino acid precursors.
transposable element - see transposon ...
Full article >>>

disulfide bond - covalent intrachain bonds found in protein molecules; covalent linking of two -SH groups of neighboring cysteine residues in a folded polypeptide chain. These bonds are rarely, if ever found in the cytosol.
Full article >>>


'"/>


See more about: Polyp

TAG: Polyp
Other biology dictionary
(Date:5/15/2008)...w that high school biology students can recite tha... messenger RNA (mRNA), which is then translated in...sending studentsand many scientistsscrambling for ...or Biological Studies investigator Joseph Ecker, P... Developmental Cell, shows that the RNA world is m...
(Date:5/15/2008)...pirical knowledge that tuna aggregate under floati... wood, or even large marine mammals. There is stil...ur, but the past 20 years have seen purse-seine fi...oncentrations of fish. Fishermen cast off floating...normous purse-seine net, deployed in a wide arc on...
(Date:5/14/2008)...etic differences may explain the greater risk for ...Hispanic men, which could help clinicians predict ...ng to a paper published in the May 15, 2008, issue...rican Association for Cancer Research. , Current...prostate cancer is the prostate specific antigen t...
(Date:5/14/2008)...--Researchers have developed what they believe is ...ibiting a common target used to treat all HIV pati...f AIDS drugs. , Researchers at the University of...biting compound, and then confirmed in the lab tha...hich is an established target for AIDS treatment. ...
Breaking Biology News(10 mins):Plant biologists discover unexpected proteins affecting small RNAs 2Plant biologists discover unexpected proteins affecting small RNAs 3Does fishing on drifting fish aggregation devices endanger the survival of tropical tuna? 2Does fishing on drifting fish aggregation devices endanger the survival of tropical tuna? 3Genes may play role in risk assessment for prostate cancer among Hispanics and caucasians 2Compound has potential for new class of AIDS drugs 2Celebrity Designer Ty Pennington to Host ADHD Experts on Call Program 529 1Celebrity Designer Ty Pennington to Host ADHD Experts on Call Program 529 2Celebrity Designer Ty Pennington to Host ADHD Experts on Call Program 529 3Celebrity Designer Ty Pennington to Host ADHD Experts on Call Program 529 4Celebrity Designer Ty Pennington to Host ADHD Experts on Call Program 529 5Millennium Biotechnologies Group Inc 28MBTG OB 29 Announces Appointment of Mark C Mirken as its President and Chief Operating Officer 525 1Millennium Biotechnologies Group Inc 28MBTG OB 29 Announces Appointment of Mark C Mirken as its President and Chief Operating Officer 525 2Millennium Biotechnologies Group Inc 28MBTG OB 29 Announces Appointment of Mark C Mirken as its President and Chief Operating Officer 525 3Tamoxifen Helps Treat Bipolar Disorder 1086 1Tamoxifen Helps Treat Bipolar Disorder 1086 2Tamoxifen Helps Treat Bipolar Disorder 1086 3Putting stem cell research on the fast track 359 1Putting stem cell research on the fast track 359 2Putting stem cell research on the fast track 359 3Putting stem cell research on the fast track 359 4
... a challenging problem. Building classifiers based...yet the selection of non-redundant but relevant ge...small enough to allow diagnosis even in regular cl...olved in cancer-specific regulatory pathways. Here...genes related to the different cancer classes whil...
... a potential resurgence in SARS (Sudden Acute Resp...ear on February 9, researchers at Washington Unive...new protein that could be an important contributor...eath. , When the SARS virus first jumped from its...2002, it caused approximately 800 deaths and 8,000...
...ising rate of HIV infection, warn two senior docto...ated 38 million people worldwide, including over 2...a record 4.8 million became infected in 2003. , T...is socioeconomic, but the increase also represents... instance, the search for a vaccine against HIV ha...
...d of care for patients with relapsed lymphoma, but...e and HIV. A new study showing,that this treatment...ssociated lymphoma will be published in the Januar...f the American Society of,Hematology.,Because of t...ive,patients are more likely to develop lymphoma t...
Other Biology News:New SARS Protein Linked To Important Cell Doorway 2New SARS Protein Linked To Important Cell Doorway 3Potential Cure for Lymphoma in HIV patients 2Potential Cure for Lymphoma in HIV patients 3