Search results
Results From The WOW.Com Content Network
The products of essential genes can also be studied when expressed in other organisms, or when purified and studied in vitro. Conditionally essential genes are easier to study. Temperature-sensitive variants of essential genes have been identified which encode products that lose function at high temperatures, and so only show a phenotype at ...
Benjamin Lewin is a molecular biologist who founded the journal Cell [1] and authored the textbook Genes. [2] He is credited with building Cell into a recognized journal of cellular biology in a short period of time to rival Nature and Science .
Factor IX (EC 3.4.21.22), also known as Christmas factor, is one of the serine proteases involved in coagulation; it belongs to peptidase family S1. Deficiency of this protein causes haemophilia B . It was discovered in 1952 after a young boy named Stephen Christmas was found to be lacking this exact factor, leading to haemophilia . [ 5 ]
X chromosome. The factor IX gene is located on the X chromosome (Xq27.1-q27.2). It is an X-linked recessive trait, which explains why males are affected in greater numbers. [9] [10] A change in the F9 gene, which makes blood clotting factor IX (9), causes haemophilia B. [11]
[1] [5] [6] The GeneCards database provides access to free Web resources about more than 350,000 known and predicted human genes, integrated from >150 data resources, such as HGNC, Ensembl, and NCBI. The core gene list is based on NCBI, Ensembl and approved gene symbols published by the HUGO Gene Nomenclature Committee (HGNC).
3' untranslated region (3'-UTR). Also three-prime untranslated region, 3' non-translated region (3'-NTR), and trailer sequence.. 3'-end. Also three-prime end.. One of two ends of a single linear strand of DNA or RNA, specifically the end at which the chain of nucleotides terminates at the third carbon atom in the furanose ring of deoxyribose or ribose (i.e. the terminus at which the 3' carbon ...
Gene functions in the minimal genome of the synthetic organism, Syn 3 [105] Essential genes are the set of genes thought to be critical for an organism's survival. [106] This definition assumes the abundant availability of all relevant nutrients and the absence of environmental stress. Only a small portion of an organism's genes are essential.
Zygosity is an important factor in human medicine. If one copy of an essential gene is mutated, the (heterozygous) carrier is usually healthy. However, more than 1,000 human genes appear to require both copies, that is, a single copy is insufficient for health. This is called haploinsufficiency. [8]