Contacts of the helix formed by residues 393 - 400 (chain A) in PDB entry 2G19
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 ALA 393 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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291A LYS* 2.8 29.3 + - + +
293A ASN* 3.5 32.4 + - + +
391A PHE 3.8 1.2 + - - -
392A ASP* 1.3 72.0 - - - +
394A ASP* 1.3 62.9 + - - +
396A ARG* 4.1 1.1 - - - +
397A ALA* 3.0 25.5 + - - +
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Residues in contact with ASP 394 (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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291A LYS* 5.9 0.2 - - - +
392A ASP* 3.3 10.1 + - - +
393A ALA* 1.3 76.6 - - - +
395A GLU* 1.3 68.3 + - - +
397A ALA* 3.2 6.4 + - - +
398A ARG* 2.8 62.5 + - - +
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Residues in contact with GLU 395 (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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290A TYR* 4.8 13.7 + - - -
316A ASN* 2.8 30.6 + - - -
319A GLY* 3.1 20.7 - - - +
321A GLY* 2.9 26.3 + - - +
322A ARG 4.5 3.1 - - - +
323A CYS* 5.2 0.3 - - - +
392A ASP* 2.9 21.5 + - + +
394A ASP* 1.3 80.6 + - - +
396A ARG* 1.3 58.3 + - - +
398A ARG* 3.4 10.4 + - + +
399A ALA* 3.0 26.3 + - - +
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Residues in contact with ARG 396 (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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293A ASN* 5.2 3.8 - - - +
320A ASP* 3.2 25.7 + - - +
321A GLY* 3.8 7.5 - - - -
391A PHE* 3.7 44.2 - - + -
392A ASP 3.0 18.9 + - - +
393A ALA* 4.2 3.1 - - - +
395A GLU* 1.3 75.3 - - - +
397A ALA* 1.3 67.0 + - - +
399A ALA* 3.2 17.4 + - - +
400A LYS* 3.3 24.0 + - + +
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Residues in contact with ALA 397 (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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393A ALA 3.0 19.6 + - - +
394A ASP* 3.2 7.4 + - - +
396A ARG* 1.3 79.6 - - - +
398A ARG* 1.3 59.1 + - - +
400A LYS* 3.6 25.2 - - - +
401A VAL* 4.0 5.5 - - - +
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Residues in contact with ARG 398 (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 GLY 6.0 0.7 - - - +
394A ASP* 2.8 43.6 + - - +
395A GLU* 3.5 16.8 - - + +
397A ALA* 1.3 76.5 - - + +
399A ALA* 1.3 64.9 + - - +
400A LYS 3.1 2.0 - - - -
401A VAL* 3.1 31.0 + - + +
402A LYS* 4.6 0.5 - - - +
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Residues in contact with ALA 399 (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 GLY 3.6 19.7 - - - +
320A ASP* 3.8 20.0 - - - +
395A GLU 3.0 18.8 + - - +
396A ARG* 3.2 14.3 + - - +
398A ARG* 1.3 72.8 - - - +
400A LYS* 1.3 67.5 + - - +
401A VAL 2.9 2.5 - - - -
402A LYS* 2.9 30.9 + - + +
403A TYR* 3.4 4.3 + - - -
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Residues in contact with LYS 400 (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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396A ARG* 3.5 22.9 - - + +
397A ALA* 3.6 18.6 - - - +
398A ARG 3.1 0.4 - - - -
399A ALA* 1.3 79.3 - - - +
401A VAL* 1.3 56.7 - - + +
402A LYS 3.1 4.9 + - - -
403A TYR* 3.6 25.9 + - - +
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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