Contacts of the helix formed by residues 325 - 330 (chain I) in PDB entry 3GHG
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with ASN 325 (chain I).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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314I THR 4.0 6.9 + - - -
315I TRP 3.4 18.2 - - - +
318I ASP* 3.7 21.0 - - - +
320I ASP* 3.3 2.5 - - - -
322I PHE* 4.0 1.0 - - - -
324I GLY* 1.3 72.9 - - - +
326I CYS* 1.3 65.1 + - - +
327I ALA* 3.4 10.3 - - - +
328I GLU* 3.1 35.7 - - + +
329I GLN* 2.9 35.0 + - - +
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Residues in contact with CYS 326 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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320I ASP* 2.7 26.9 + - - +
322I PHE* 3.4 20.4 - - - -
325I ASN* 1.3 73.0 - - - +
327I ALA* 1.3 61.6 + - - +
329I GLN* 3.5 6.1 + - - +
330I ASP* 3.1 31.5 + - - +
336I MET* 3.4 22.1 - - + +
338I LYS* 4.2 0.7 - - - -
339I CYS* 2.0 51.6 - - + -
3Q ARG* 4.9 0.4 - - - +
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Residues in contact with ALA 327 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
313I SER* 3.8 18.1 - - - +
314I THR* 3.4 33.9 - - - +
315I TRP* 4.4 6.2 - - - +
320I ASP* 4.7 0.4 + - - -
325I ASN* 3.4 3.1 - - - +
326I CYS* 1.3 77.4 - - - +
328I GLU* 1.3 62.3 + - - +
331I GLY* 3.3 2.8 + - - -
332I SER 3.0 44.5 + - - +
336I MET* 3.8 10.8 - - + +
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Residues in contact with GLU 328 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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205I LYS* 3.4 24.9 + - - -
315I TRP* 3.7 23.4 - - + +
325I ASN* 3.1 35.5 - - + +
326I CYS 3.2 0.2 - - - -
327I ALA* 1.3 75.1 - - - +
329I GLN* 1.3 71.9 + - + +
331I GLY* 3.2 13.0 + - - -
361I ASN* 4.7 2.3 + - - +
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Residues in contact with GLN 329 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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322I PHE* 3.5 24.0 - - - -
324I GLY* 5.9 0.4 - - - -
325I ASN* 2.9 29.4 + - - +
326I CYS* 3.5 1.6 + - - +
328I GLU* 1.3 86.2 - - + +
330I ASP* 1.3 62.4 + - - +
331I GLY 3.3 0.9 + - - -
360I PRO* 4.8 4.3 - - - +
361I ASN* 3.2 42.4 + - - +
363I TYR* 3.3 27.1 + - + -
365I ASN* 4.3 8.0 - - - +
3Q ARG* 3.8 21.7 + - - +
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Residues in contact with ASP 330 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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326I CYS 3.1 16.6 + - - +
327I ALA 4.0 0.2 - - - -
329I GLN* 1.3 78.4 - - - +
331I GLY* 1.3 65.1 + - - +
332I SER* 3.2 7.9 + - - -
336I MET* 4.5 2.3 - - + +
339I CYS* 4.9 0.7 - - - +
340I HIS* 2.7 37.3 + - - -
343I HIS* 3.7 22.4 - - + +
346I GLY* 4.6 0.7 - - - -
347I VAL* 4.6 1.0 + - - +
363I TYR* 4.4 5.0 - - - +
364I ASP 3.8 1.9 - - - +
365I ASN* 3.5 35.3 - - + +
3Q ARG* 3.2 26.9 + - - -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il