Contacts of the helix formed by residues 384 - 388 (chain A) in PDB entry 1T9A
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 384 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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382A THR 3.9 2.1 - - - +
383A GLY* 1.3 68.2 - - - -
385A ILE* 1.3 59.6 + - - +
386A SER* 2.7 30.9 + - - -
387A LYS* 2.9 37.0 + - + +
388A PHE 3.1 8.3 + - - -
657A GLY 4.6 6.2 + - - -
658A GLY* 2.9 34.8 + - - +
659A SER 2.9 25.0 + - - +
660A GLY* 4.4 1.3 - - - -
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Residues in contact with ILE 385 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
382A THR* 3.7 24.5 - - + +
383A GLY 2.9 7.3 + - - +
384A ASN* 1.3 73.7 + - - +
386A SER* 1.3 68.8 + - - +
387A LYS 3.0 0.9 + - - -
388A PHE* 3.2 20.4 + - + +
393A ARG* 4.3 2.6 + - - -
416A VAL* 3.6 26.2 - - + +
417A VAL* 3.2 34.2 - - + +
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Residues in contact with SER 386 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
384A ASN* 2.7 25.6 + - - -
385A ILE* 1.3 85.0 - - - +
387A LYS* 1.3 62.6 + - - +
393A ARG* 2.9 23.3 + - - -
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Residues in contact with LYS 387 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
365A GLN* 2.9 20.4 + - - +
384A ASN* 2.9 17.7 + - + +
386A SER* 1.3 88.8 - - - +
388A PHE* 1.3 61.6 + - - +
390A PRO* 3.5 9.3 - - - +
393A ARG* 3.6 4.9 - - - +
658A GLY 2.7 25.6 + - - +
659A SER* 4.2 0.4 - - - +
660A GLY* 3.8 15.7 - - - +
662A ASP* 5.6 0.7 - - - +
663A GLU* 2.7 37.2 + - - +
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Residues in contact with PHE 388 (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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305A TYR* 5.3 5.4 - + - -
352A LEU* 5.5 1.1 - - + -
364A VAL* 3.8 26.9 - - + -
365A GLN* 3.8 2.9 - - - +
370A ILE* 4.4 7.6 - - + -
377A PHE* 3.8 35.9 - + - -
381A VAL* 4.8 4.7 - - + -
382A THR* 3.4 37.5 - - + +
384A ASN 3.1 4.6 + - - +
385A ILE* 3.2 22.4 + - + +
386A SER 3.5 0.2 - - - -
387A LYS* 1.3 74.8 - - - +
389A ALA* 1.3 83.0 - - + +
393A ARG* 3.1 14.2 + - - +
403A ILE* 4.4 11.0 - - + -
417A VAL* 4.2 16.4 - - + -
661A LEU* 3.9 15.0 - - + +
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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