Contacts of the helix formed by residues 320 - 329 (chain A) in PDB entry 2FQ6
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 320 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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318A LYS 3.6 1.6 + - - +
319A LEU* 1.3 75.9 - - - +
321A ASN* 1.3 60.5 + - - +
322A GLU* 3.1 12.9 + - - +
323A GLU* 2.9 48.5 + - - +
324A LEU* 2.8 27.9 + - - +
351A GLN* 5.1 0.7 - - - -
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Residues in contact with ASN 321 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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320A ASN* 1.3 72.5 - - - +
322A GLU* 1.3 65.3 + - - +
324A LEU* 3.6 20.1 - - - +
325A ALA* 3.1 23.6 + - - +
351A GLN* 5.4 2.2 + - - -
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Residues in contact with GLU 322 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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320A ASN* 3.1 10.2 + - - +
321A ASN* 1.3 77.2 - - - +
323A GLU* 1.3 61.9 + - + +
325A ALA* 3.3 6.6 + - - +
326A ASN* 2.9 29.9 + - + +
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Residues in contact with GLU 323 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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317A LYS* 3.3 31.7 + - - +
318A LYS 4.2 2.6 - - - +
319A LEU* 3.5 20.7 - - + +
320A ASN* 2.9 47.7 + - - +
322A GLU* 1.3 77.0 - - + +
324A LEU* 1.3 59.7 + - - +
326A ASN* 3.2 7.6 + - - +
327A TYR* 2.8 33.4 + - - +
393A ARG 5.9 0.7 - - - +
394A ILE* 3.8 11.9 - - + +
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Residues in contact with LEU 324 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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319A LEU* 4.0 24.5 - - + +
320A ASN 2.8 19.3 + - - +
321A ASN* 3.6 22.4 - - - +
323A GLU* 1.3 72.4 - - - +
325A ALA* 1.3 57.4 + - - +
327A TYR* 3.7 0.3 - - - +
328A LEU* 2.9 49.7 + - + +
349A ALA* 3.9 28.5 - - + -
351A GLN* 4.0 26.2 - - + +
354A HIS* 6.3 0.9 - - + -
369A THR* 4.4 5.8 - - + -
371A ILE* 5.4 0.2 - - + -
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Residues in contact with ALA 325 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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321A ASN 3.1 15.6 + - - +
322A GLU* 3.6 5.8 - - - +
323A GLU 3.2 0.2 - - - -
324A LEU* 1.3 76.0 - - - +
326A ASN* 1.3 61.3 + - - +
328A LEU* 5.1 0.2 - - - -
329A ASP* 2.8 57.0 + - - +
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Residues in contact with ASN 326 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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322A GLU* 2.9 18.8 + - + +
323A GLU* 3.6 7.4 - - - +
325A ALA* 1.3 77.0 - - - +
327A TYR* 1.3 59.6 + - - +
330A ASN* 2.8 30.5 + - - +
393A ARG* 2.8 60.5 + - - +
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Residues in contact with TYR 327 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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313A PHE* 3.7 23.2 - - - -
315A LEU* 4.7 4.3 - - + -
319A LEU* 4.2 15.7 - - + -
323A GLU 2.8 17.7 + - - +
324A LEU* 3.7 2.5 - - + +
326A ASN* 1.3 77.9 - - - +
328A LEU* 1.3 74.7 + - + +
330A ASN 3.7 0.9 + - - -
331A PHE* 3.1 26.5 - + - -
347A ILE* 4.0 13.8 - - + +
371A ILE* 3.9 24.9 - - + -
387A LEU* 3.9 9.8 + - - +
390A GLY* 3.2 35.9 - - - -
391A PHE* 4.2 7.6 - + - -
393A ARG* 2.9 29.1 + - - +
394A ILE* 3.6 28.9 - - + +
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Residues in contact with LEU 328 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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324A LEU* 2.9 33.2 + - + +
325A ALA* 5.1 0.2 - - - -
327A TYR* 1.3 93.2 - - + +
329A ASP* 1.3 67.6 + - - +
330A ASN 3.3 0.9 + - - -
331A PHE* 3.8 14.7 + - - +
336A MET* 3.9 36.3 - - + +
347A ILE* 4.0 37.0 - - + +
348A LEU* 5.0 0.4 - - + -
349A ALA* 3.9 33.4 - - + +
371A ILE* 4.9 0.2 - - + -
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Residues in contact with ASP 329 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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325A ALA* 2.8 42.7 + - - +
328A LEU* 1.3 74.9 - - - +
330A ASN* 1.3 67.0 + - - +
331A PHE 3.6 3.2 + - - +
336A MET* 3.9 17.0 - - - +
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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