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PMM1 and PMM2 refer to phosphomannomutase enzymes involved in the conversion of mannose-6-phosphate to mannose-1-phosphate, a crucial step in the synthesis of glycoproteins and glycolipids. PMM1 is primarily found in the cytoplasm, while PMM2 is located in the cytoplasm and is considered the more prominent isoform in humans. Mutations in the PMM2 gene can lead to congenital disorders of glycosylation, specifically PMM2-CDG, which can affect multiple organ systems.
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Why pmm2 is impossible in thermodynamics?
A perpetual motion machine of the second kind (PMM2) is impossible according to the second law of thermodynamics, which states that heat cannot spontaneously flow from a colder body to a hotter body without external work. PMM2 would violate this principle by converting thermal energy from a heat reservoir into work without any loss, effectively creating energy from nothing. This contradicts the concept of entropy, which dictates that in any energy exchange, the total entropy of a system and its surroundings will either increase or remain constant, but never decrease. Thus, such a machine cannot exist.
What is PMM 1 why it is impossible?
WHAT IS PMM-1 A PMM1 is a Thermodynamic system that undergoes a cyclic process that produce no external affects other than the rise ( or fall) of a weight in a gravity field. WHY IS IT IMPOSSIBLE? PMM-1 state that work can still be produce in a cyclic process. This definition is against first law of thermodynamics and conservation of energy. According to first law of thermodynamics, in cyclic process E2- E1 = mg (h2 - h1) h2= h1 in cyclic process so the above equation yields E2=E1. where as according to PMM-1 you can produce work even when energy is zero (0), which makes it impossible
What are the genetic disorders associated with oligosaccharides?
Defective Enzyme Disorder: includes the following: α-Mannosidosis α-Mannosidase β-Mannosidosis β-Mannosidase α-Fucosidosis α-Fucosidase Sialidosis α-Neuraminidase Galactosialidosis Protective protein Aspartylglucosaminuria Aspartylglycosaminidase Schindler disease α-N-Ac-galactosaminidase Mucolipidosis II (I-cell disease) N-acetylglycosmaine-1 phosphotransferase Mucolipidosis III N-acetylglycosmaine-1- phosphotransferase.
