Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Harvey, J. W. Vora, S. Giger, U. Turchen, S. |
| Abstract | Mammalian phosphofructokinase (PFK; ATP:D-fructose-6-phosphate 1-phosphotransferase, EC 2.7.1.11) exists in multimolecular forms, which result from random tetramerization of three distinct subunits, M (muscle-type), L (liver-type), and P (platelet-type), each under a separate genetic control. Human muscle and liver contain homotetramers M4 and L4, respectively, whereas erythrocytes contain a mixture of M4, M3L, M2L2, ML3, and L4 isozymes. Homozygous deficiency of the M subunit in man results in glycogen storage disease (GSD) type VII, which is characterized by exertional muscle weakness and compensated hemolysis; the residual erythrocyte PFK consists of isolated L4 isozyme. Recently, PFK deficiency associated with isolated hemolytic anemia has been identified among English springer spaniel dogs. We investigated the genetic control of the dog PFK system and the nature of the enzymatic defect in two PFK-deficient animals, using chromatographic and immunological techniques. Our studies indicate the existence of a trilocus isozyme system for the dog, as is the case with other mammals. Muscle PFK consists of M4 isozyme, whereas the predominant species of liver and platelet consists, respectively, of the L4 and P4 isozyme; erythrocyte PFK consists of a three- or four-membered set composed of M and P subunits. PFK deficiency in the dogs was found to result from a total and universal lack of the M subunit, as is the case in man. However, the probands consistently exhibited L4 isozyme in their muscle; P4, L4, and hybrids thereof in their erythrocytes; and an increase in the L-containing isozymes in their platelets, indicating a generalized anomalous presence of the L subunit. The apparent absence of muscle disease in these animals is most likely accounted for by both the well-known high oxidative potential of the canine muscle in general and the presence of liver PFK in the M-deficient muscle in particular. In contrast, presence of hemolysis despite residual P4 and hybrids of P and L in the erythrocytes may be inferred to result in severe glycolytic handicap under existing intraerythrocytic conditions. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 23 |
| Volume Number | 82 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1985-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Dog Diseases Enzymology Genetics Glycogen Storage Disease Veterinary Phosphofructokinase-1 Deficiency Animals Erythrocytes Glycogen Metabolism Immunologic Techniques Isoenzymes Muscles Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|