5LGH

Afamin antibody fragment, N14 Fab, L1- glycosilated, crystal form II, same as 5L7X, but isomorphous setting indexed same as 5L88, 5L9D

5LGH の概要

• エントリーDOI: 10.2210/pdb5lgh/pdb
• 分子名称: MOUSE ANTIBODY FAB FRAGMENT, IGG1-KAPPA HEAVY CHAIN, MOUSE ANTIBODY FAB FRAGMENT, IGG1-KAPPA LIGHT CHAIN, TETRAETHYLENE GLYCOL, ... (7 entities in total)
• 機能のキーワード: fab, antibody fragment, glycosilated, afamin, immune system
• 由来する生物種: MUS MUSCULUS (HOUSE MOUSE); 詳細
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 48316.67

構造登録者

Rupp, B.,Naschberger, A. (登録日: 2016-07-07, 公開日: 2016-08-03, 最終更新日: 2024-11-13)

主引用文献

Naschberger, A.,Furnrohr, B.G.,Lenac Rovis, T.,Malic, S.,Scheffzek, K.,Dieplinger, H.,Rupp, B.
The N14 anti-afamin antibody Fab: a rare VL1 CDR glycosylation, crystallographic re-sequencing, molecular plasticity and conservative versus enthusiastic modelling.
Acta Crystallogr D Struct Biol, 72:1267-1280, 2016

PubMed Abstract: The monoclonal antibody N14 is used as a detection antibody in ELISA kits for the human glycoprotein afamin, a member of the albumin family, which has recently gained interest in the capture and stabilization of Wnt signalling proteins, and for its role in metabolic syndrome and papillary thyroid carcinoma. As a rare occurrence, the N14 Fab is N-glycosylated at Asn26L at the onset of the V1 antigen-binding loop, with the α-1-6 core fucosylated complex glycan facing out of the L1 complementarity-determining region. The crystal structures of two non-apparent (pseudo) isomorphous crystals of the N14 Fab were analyzed, which differ significantly in the elbow angles, thereby cautioning against the overinterpretation of domain movements upon antigen binding. In addition, the map quality at 1.9 Å resolution was sufficient to crystallographically re-sequence the variable V and V domains and to detect discrepancies in the hybridoma-derived sequence. Finally, a conservatively refined parsimonious model is presented and its statistics are compared with those from a less conservatively built model that has been modelled more enthusiastically. Improvements to the PDB validation reports affecting ligands, clashscore and buried surface calculations are suggested.

PubMed: 27917827
DOI: 10.1107/S205979831601723X

実験手法

X-RAY DIFFRACTION (1.86 Å)