Contacts of the helix formed by residues 1338 - 1343 (chain A) in PDB entry 3PT6
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 ALA1338 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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987A SER 4.3 8.1 - - - +
988A ASN* 4.3 9.7 + - - +
990A ASP* 4.5 7.0 - - + -
991A ALA* 4.5 6.8 - - - +
1337A PHE* 1.3 77.7 - - - +
1339A PRO* 1.3 69.5 - - + +
1340A ARG* 3.2 5.2 - - + +
1341A ALA* 3.0 26.1 + - + +
1342A CYS* 3.4 10.0 - - - -
1524A PHE* 4.0 29.6 - - + -
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Residues in contact with PRO1339 (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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990A ASP* 3.3 41.7 - - + +
992A PRO* 4.2 13.0 - - + -
1337A PHE 3.2 4.9 - - - +
1338A ALA* 1.3 84.2 - - - +
1340A ARG* 1.3 61.6 + - - +
1341A ALA 3.3 0.2 - - - -
1342A CYS* 3.2 22.5 + - + +
1343A GLN* 4.3 0.7 + - - +
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Residues in contact with ARG1340 (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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990A ASP* 5.4 8.0 + - - +
1314A ARG* 5.8 1.2 + - - -
1338A ALA* 3.2 4.2 - - + -
1339A PRO* 1.3 74.9 - - - +
1341A ALA* 1.3 58.5 + - - +
1342A CYS 3.0 9.1 + - - -
1343A GLN* 4.2 9.0 + - - +
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Residues in contact with ALA1341 (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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1303A GLN* 2.7 24.3 - - - +
1312A THR* 3.7 22.4 - - + +
1314A ARG* 3.7 14.1 - - - +
1337A PHE* 3.3 32.1 - - + -
1338A ALA* 3.0 13.5 + - + +
1340A ARG* 1.3 77.9 - - - +
1342A CYS* 1.3 58.3 + - - +
1343A GLN 3.7 1.3 - - - -
1524A PHE* 5.0 3.4 - - + -
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Residues in contact with CYS1342 (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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1303A GLN* 4.0 0.9 - - - -
1306A GLN* 3.6 41.3 - - - +
1337A PHE* 3.8 20.6 - - - -
1338A ALA 3.4 15.7 - - - +
1339A PRO* 3.2 16.5 + - + +
1340A ARG 3.0 3.2 - - - -
1341A ALA* 1.3 82.9 - - - +
1343A GLN* 1.3 60.3 + - - +
1344A LEU* 3.1 22.3 + - + +
1360A LEU 5.5 5.4 - - - +
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Residues in contact with GLN1343 (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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709A ASP* 3.4 22.9 - - - +
710A ASP 5.6 2.9 - - - +
1272A ARG* 5.0 0.5 + - - -
1301A VAL* 4.7 1.0 - - - +
1314A ARG* 2.8 34.1 + - - +
1339A PRO 4.3 1.3 + - - +
1340A ARG 4.2 7.4 + - - +
1341A ALA 3.7 2.2 + - - -
1342A CYS* 1.3 73.6 - - - +
1344A LEU* 1.3 61.4 + - - +
1345A SER* 3.4 10.1 + - - +
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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