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hanbing7525

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Native C3 itself is biologically inactive. C3 is derived by proteolytic processing of a single-chain proC3 precursor to and -chains (Fig. 1A). C3 contains eight MG (macroglobulin)
domains that form a key ring, with MG1¨C4 completing one ring,MG5 and MG6 forming a second, overlapping half-ring, and MG7 and MG8 extending the second half-ring .
The C345C domain forms a knob-like protrusion (Fig. 1B). The TED is inserted in the CUB domain, which in turn is inserted between MG domains 7 and 8 (Fig. 1 A and B). The reactive thioester bond is shielded from solvent within the interface of the TED with the MG8 domain (Fig. 1B). EM revealed three different groups (I¨CIII) of C3 class averages with different orientations on the grid (Fig. 2 A Lower), which show excellent cross-correlation with projections from the crystal structure (Fig. 3 A¨CC). The domains in C3 are most clearly visible in the group II orientation (Fig. 3B, compare with Fig. 1B).

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°®ÓëÓêÏÂ: ½ð±Ò+1 2015-01-02 09:28:04
hanbing7525(RXMCDM´ú·¢): ½ð±Ò+10, ¶àлӦÖú£¡ 2015-02-01 08:56:07
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weichao123

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°®ÓëÓêÏÂ: ½ð±Ò+1 2015-01-02 09:27:53
hanbing7525(RXMCDM´ú·¢): ½ð±Ò+40, ¶àлӦӦÖú£¡ 2015-02-01 08:56:26
RXMCDM: ·­ÒëEPI+1 2015-02-01 08:56:32
???C3???????????????? C3?????????PROC3??????????????-chains ???1A?????¨¢? C3???????MG????????
?¦Ã????????????MG1a ? ??4?????????? MG5??MG6?¦Ã????????????? MG7??MG8???????????
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3Â¥2014-12-31 15:26:14
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