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河外生命木蟲(chóng) (小有名氣)
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[求助]
為什么一個(gè)原子可以和周圍五六個(gè)原子有作用?
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各位大神,我在用pymol分析對(duì)接結(jié)果的時(shí)候,用find-polar contacts這個(gè)命令顯示配體與周圍氨基酸存在的相互作用,顯示出來(lái)一個(gè)O原子和周圍多達(dá)五六個(gè)原子有相互作用(如圖)?這種情況應(yīng)該怎么分析、取舍?謝謝指教! Snap1.jpg |
VMD 軟件 |

金蟲(chóng) (小有名氣)

木蟲(chóng) (小有名氣)

木蟲(chóng) (小有名氣)

金蟲(chóng) (小有名氣)
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Pymol里面的polar contact的定義,對(duì)你或許有幫助! http://www.mail-archive.com/pymo ... e.net/msg03247.html RE: [PyMOL] polar contact definition Warren DeLano Mon, 23 May 2005 20:36:20 -0700 Sergio, We use the term "polar contacts" because, as you correctly point out, some of the contacts shown don't meet strict hydrogen-bonding criteria. Of course, many macromolecular crystal structures aren't of high enough resolution to make definitive determinations anyway...so... With ideal geometry, PyMOL will show polar contacts out to: set h_bond_cutoff_center, 3.6 With minimally acceptable geometry, PyMOL will show polar contacts out to set h_bond_cutoff_edge, 3.2 These settings can be changed *before* running the detection process (dist command mode=2 or via the menus). Note that the hydrogen bond geometric criteria used in PyMOL was designed to emulate that used by DSSP. Cheers, Warren -- Warren L. DeLano, Ph.D. Principal Scientist . DeLano Scientific LLC . 400 Oyster Point Blvd., Suite 213 . South San Francisco, CA 94080 USA . Biz 650)-872-0942 Tech 650)-872-0834 . Fax 650)-872-0273 Cell 650)-346-1154. mailto:war...@delsci.com > -----Original Message----- > From: pymol-users-ad...@lists.sourceforge.net > [ mailto:pymol-users-ad...@lists.sourceforge.net ] On Behalf Of > Sergio E. Wong > Sent: Monday, May 23, 2005 7:13 PM > To: pymol-users@lists.sourceforge.net > Subject: [PyMOL] polar contact definition > > Dear Pymol users: > > I'm using pymol to find "polar contacts". I'm wondering > what is the > definition of a "polar contact". Some of the distances are > longer than > expected for a hydrogen bond. So, I'm left wondering what is > the distance cut off employed. > > Thanks > > -Sergio |

金蟲(chóng) (小有名氣)

木蟲(chóng) (小有名氣)

金蟲(chóng) (小有名氣)

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