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Protein combining or protein complementing is a dietary theory for protein nutrition that purports to optimize the biological value of protein intake. According to the theory, individual vegetarian and vegan foods may provide an insufficient amount of some essential amino acids, making protein combining with multiple complementary foods necessary to obtain a meal with "complete protein".
Within the field of molecular biology, a protein-fragment complementation assay, or PCA, is a method for the identification and quantification of protein–protein interactions. In the PCA, the proteins of interest ("bait" and "prey") are each covalently linked to fragments of a third protein (e.g. DHFR, which acts as a "reporter").
Complement control proteins are proteins that interact with components of the complement system. The complement system is tightly regulated by a network of proteins known as "regulators of complement activation (RCA)" that help distinguish target cells as "self" or "non-self."
[36] [37] Suggested amounts vary from 1.2 to 1.4 g/kg for those doing endurance exercise to as much as 1.6-1.8 g/kg for strength exercise [37] [39] and up to 2.0 g/kg/day for older people, [42] while a proposed maximum daily protein intake would be approximately 25% of energy requirements i.e. approximately 2 to 2.5 g/kg. [36]
The foodstuffs listed for comparison show the essential amino acid content per unit of the total protein of the food, 100g of spinach, for example, only contains 2.9g of protein (6% Daily Value), and of that protein 1.36% is tryptophan. [2] [7] (note that the examples have not been corrected for digestibility)
The Maternal and Child Nutrition Study Group estimate that under nutrition, "including fetal growth restriction, stunting, wasting, deficiencies of vitamin A and zinc along with suboptimum breastfeeding—is a cause of 3.1 million child deaths and infant mortality, or 45% of all child deaths in 2011".
Complement factor I, also known as C3b/C4b inactivator, is a protein that in humans is encoded by the CFI gene. Complement factor I (factor I) is a protein of the complement system , first isolated in 1966 in guinea pig serum , [ 5 ] that regulates complement activation by cleaving cell-bound or fluid phase C3b and C4b. [ 6 ]
716 317677 Ensembl ENSG00000182326 ENSMUSG00000079343 UniProt P09871 Q8CFG8 RefSeq (mRNA) NM_001734 NM_201442 NM_001346850 NM_173864 RefSeq (protein) NP_001333779 NP_001725 NP_958850 NP_776289 Location (UCSC) Chr 12: 6.99 – 7.07 Mb Chr 6: 124.6 – 124.61 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Complement component 1s (EC 3.4.21.42, C1 esterase, activated complement C1s ...