SAM is required for ........ reaction.
Methylation
SAM is S-adenosylmethionine, formed in the body from the amino acid methionine and ATP by the enzyme methionine adenosyltransferase.
Its sulphonium ion carries an activated methyl group, making it the universal methyl donor for transmethylation reactions such as the synthesis of creatine, epinephrine, phosphatidylcholine and the methylation of DNA.
After donating the methyl group it becomes S-adenosylhomocysteine and then homocysteine, which is remethylated using folate and vitamin B12.
Removal of amino groups, removal of carboxyl groups and oxidation reactions use other cofactors such as pyridoxal phosphate, NAD and FAD rather than this methyl donor.
Hence, Methylation.
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Important Questions from Mixed Topic (MH-SET)
.................... is a client server application that identifies each host on the internet with a unique user-friendly name.
Every OS has a ................ or .......... which primarily resides in the main memory of the computer to perform some of the basic functions of the OS.
(i) Kernel
(ii) Interface
(iii) Nucleus
(iv) Compiler
Codes:
Which of the following are referred to as low level language?
(i) Machine language
(ii) Assembly language
(iii) High level language
(iv) Natural language
Codes:
Match the following:
List I List II (a) New York Public Library (i) Shelv AR (b) Miami University Augmented Research Group (ii) Smart library (c) Oula University Library (iii) Wolf Walk (d) North Carolina State University (iv) Find the future Codes:
Which part of the QR code represents the encoded data?
