| Structural highlights
3k0v is a 1 chain structure with sequence from Bos taurus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
| | Method: | X-ray diffraction, Resolution 1.91Å |
| Ligands: | , , , , , , , , |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
TRFL_BOVIN Transferrins are iron binding transport proteins which can bind two Fe(3+) ions in association with the binding of an anion, usually bicarbonate.[1] [2] Lactotransferrin has antimicrobial activity. The most effective inhibitory activity was seen against E.coli and P.aeruginosa.[3] [4] Lactoferricin B is an antimicrobial peptide. Inhibits the growth of Gram-negative and Gram-positive bacteria.[5] [6] The lactotransferrin transferrin-like domain 1 functions as a serine protease of the peptidase S60 family that cuts arginine rich regions. This function contributes to the antimicrobial activity.[7] [8]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Bovine lactoferrin has been shown to reduce the levels of glucose in both normal subjects and non-insulin dependent diabetic patients. The binding studies have shown that various sugar molecules interact with lactoferrin indicating the presence of a sugar-binding site in the protein. Structural studies have revealed that the sugar-binding site is located in the C-terminal half (C-lobe) of bilobal lactoferrin. Since the sugar-binding site was part of the C-lobe, it was better to carry out binding and structural studies using C-lobe rather than the full protein molecule. Therefore, C-lobe was prepared by limited proteolysis of lactoferrin with enzyme proteinase K. It was purified to homogeneity for further studies. The addition of C-lobe to human serum showed significant lowering of glucose levels. The binding studies using C-lobe with nine sugars, glucose, galactose, mannose, xylose, maltose, cellobiose, lactose, sucrose and dextrin gave values of binding constants in the range of 10(-4) to 10(-5)M. The structure determinations of the complexes of C-lobe with all the nine sugars showed that all of them interact with C-lobe through the same recognition site involving several hydrogen bonds and van der Waals interactions.
Specific interactions of C-terminal half (C-lobe) of lactoferrin protein with edible sugars: binding and structural studies with implications on diabetes.,Mir R, Kumar RP, Singh N, Vikram GP, Sinha M, Bhushan A, Kaur P, Srinivasan A, Sharma S, Singh TP Int J Biol Macromol. 2010 Jul 1;47(1):50-9. Epub 2010 Apr 4. PMID:20371371[9]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Hoek KS, Milne JM, Grieve PA, Dionysius DA, Smith R. Antibacterial activity in bovine lactoferrin-derived peptides. Antimicrob Agents Chemother. 1997 Jan;41(1):54-9. PMID:8980754
- ↑ Massucci MT, Giansanti F, Di Nino G, Turacchio M, Giardi MF, Botti D, Ippoliti R, De Giulio B, Siciliano RA, Donnarumma G, Valenti P, Bocedi A, Polticelli F, Ascenzi P, Antonini G. Proteolytic activity of bovine lactoferrin. Biometals. 2004 Jun;17(3):249-55. PMID:15222473
- ↑ Hoek KS, Milne JM, Grieve PA, Dionysius DA, Smith R. Antibacterial activity in bovine lactoferrin-derived peptides. Antimicrob Agents Chemother. 1997 Jan;41(1):54-9. PMID:8980754
- ↑ Massucci MT, Giansanti F, Di Nino G, Turacchio M, Giardi MF, Botti D, Ippoliti R, De Giulio B, Siciliano RA, Donnarumma G, Valenti P, Bocedi A, Polticelli F, Ascenzi P, Antonini G. Proteolytic activity of bovine lactoferrin. Biometals. 2004 Jun;17(3):249-55. PMID:15222473
- ↑ Hoek KS, Milne JM, Grieve PA, Dionysius DA, Smith R. Antibacterial activity in bovine lactoferrin-derived peptides. Antimicrob Agents Chemother. 1997 Jan;41(1):54-9. PMID:8980754
- ↑ Massucci MT, Giansanti F, Di Nino G, Turacchio M, Giardi MF, Botti D, Ippoliti R, De Giulio B, Siciliano RA, Donnarumma G, Valenti P, Bocedi A, Polticelli F, Ascenzi P, Antonini G. Proteolytic activity of bovine lactoferrin. Biometals. 2004 Jun;17(3):249-55. PMID:15222473
- ↑ Hoek KS, Milne JM, Grieve PA, Dionysius DA, Smith R. Antibacterial activity in bovine lactoferrin-derived peptides. Antimicrob Agents Chemother. 1997 Jan;41(1):54-9. PMID:8980754
- ↑ Massucci MT, Giansanti F, Di Nino G, Turacchio M, Giardi MF, Botti D, Ippoliti R, De Giulio B, Siciliano RA, Donnarumma G, Valenti P, Bocedi A, Polticelli F, Ascenzi P, Antonini G. Proteolytic activity of bovine lactoferrin. Biometals. 2004 Jun;17(3):249-55. PMID:15222473
- ↑ Mir R, Kumar RP, Singh N, Vikram GP, Sinha M, Bhushan A, Kaur P, Srinivasan A, Sharma S, Singh TP. Specific interactions of C-terminal half (C-lobe) of lactoferrin protein with edible sugars: binding and structural studies with implications on diabetes. Int J Biol Macromol. 2010 Jul 1;47(1):50-9. Epub 2010 Apr 4. PMID:20371371 doi:10.1016/j.ijbiomac.2010.03.021
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