1dfb

<table><tr><td colspan='2'>[[1dfb]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DFB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1DFB FirstGlance]. <br>

</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1dfb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dfb OCA], [https://pdbe.org/1dfb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1dfb RCSB], [https://www.ebi.ac.uk/pdbsum/1dfb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1dfb ProSAT]</span></td></tr>

[[https://www.uniprot.org/uniprot/IGHG1_HUMAN IGHG1_HUMAN]] Defects in IGHG1 are a cause of multiple myeloma (MM) [MIM:[https://omim.org/entry/254500 254500]]. MM is a malignant tumor of plasma cells usually arising in the bone marrow and characterized by diffuse involvement of the skeletal system, hyperglobulinemia, Bence-Jones proteinuria and anemia. Complications of multiple myeloma are bone pain, hypercalcemia, renal failure and spinal cord compression. The aberrant antibodies that are produced lead to impaired humoral immunity and patients have a high prevalence of infection. Amyloidosis may develop in some patients. Multiple myeloma is part of a spectrum of diseases ranging from monoclonal gammopathy of unknown significance (MGUS) to plasma cell leukemia. Note=A chromosomal aberration involving IGHG1 is found in multiple myeloma. Translocation t(11;14)(q13;q32) with the IgH locus. Translocation t(11;14)(q13;q32) with CCND1; translocation t(4;14)(p16.3;q32.3) with FGFR3; translocation t(6;14)(p25;q32) with IRF4.

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== Publication Abstract from PubMed ==

The three-dimensional structure of a human monoclonal antibody (Fab), which binds specifically to a major epitope of the transmembrane protein gp41 of the human immunodeficiency virus type 1, has been determined by crystallographic methods to a resolution of 2.7 A. It has been previously determined that this antibody recognizes the epitope SGKLICTTAVPWNAS, belongs to the subclass IgG1 (kappa), and exhibits antibody-dependent cellular cytotoxicity. The quaternary structure of the Fab is in an extended conformation with an elbow bend angle between the constant and variable domains of 175 degrees. Structurally, four of the hypervariable loops can be classified according to previously recognized canonical structures. The third hypervariable loops of the heavy (H3) and light chain (L3) are structurally distinct. Hypervariable loop H3, residues 102H-109H, is unusually extended from the surface. The complementarity-determining region forms a hydrophobic binding pocket that is created primarily from hypervariable loops L3, H3, and H2.

Structure of a human monoclonal antibody Fab fragment against gp41 of human immunodeficiency virus type 1.,He XM, Ruker F, Casale E, Carter DC Proc Natl Acad Sci U S A. 1992 Aug 1;89(15):7154-8. PMID:1496010<ref>PMID:1496010</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 1dfb" style="background-color:#fffaf0;"></div>

[[Category: Carter, D C]]

[[Category: Casale, E]]

[[Category: He, X M]]

[[Category: Rueker, F]]

[[Category: Immunoglobulin]]