Contacts of the helix formed by residues 373 - 380 (chain D) in PDB entry 1T2K
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 373 (chain D).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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287C LEU* 4.5 9.3 - - + +
290C GLN* 3.5 33.4 + - - +
291C ASN* 4.0 27.3 + - + +
294C LEU* 4.3 4.3 - - - +
369D LEU 2.6 22.5 + - - +
370D SER* 3.4 11.3 + - - +
372D LEU* 1.3 72.9 - - - +
374D GLY* 1.3 65.5 + - - +
376D LEU* 3.5 5.9 + - - +
377D GLN* 3.3 27.9 + - - +
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Residues in contact with GLY 374 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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370D SER 2.8 15.2 + - - -
371D SER* 3.2 5.1 + - - -
372D LEU 3.0 0.8 - - - -
373D ASN* 1.3 80.0 - - - +
375D GLN* 1.3 63.0 + - - +
377D GLN* 3.3 14.4 + - - +
378D SER* 3.4 13.0 + - - -
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Residues in contact with GLN 375 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
371D SER* 2.3 39.8 + - - -
372D LEU* 3.2 10.4 + - - +
374D GLY* 1.3 74.9 - - - +
376D LEU* 1.3 62.4 + - + +
378D SER* 2.8 11.8 + - - +
379D GLU* 2.8 48.3 + - + +
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Residues in contact with LEU 376 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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291C ASN* 3.6 19.5 - - - +
294C LEU* 3.6 18.4 - - + +
295C ALA* 3.2 43.7 - - + +
298C ALA* 5.2 7.0 - - + -
372D LEU* 3.4 13.9 + - + +
373D ASN* 4.0 7.9 - - - +
374D GLY 3.2 0.6 - - - -
375D GLN* 1.3 77.0 - - + +
377D GLN* 1.3 66.0 + - - +
379D GLU* 3.3 22.4 - - + +
380D VAL* 3.0 31.2 + - + +
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Residues in contact with GLN 377 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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290C GLN* 4.0 11.1 + - - -
294C LEU* 3.8 26.2 - - + +
373D ASN* 3.3 17.3 + - - +
374D GLY* 3.3 10.1 + - - +
376D LEU* 1.3 78.4 - - - +
378D SER* 1.3 61.6 + - - +
380D VAL* 3.6 12.0 - - - +
381D THR* 3.3 20.1 + - - -
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Residues in contact with SER 378 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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374D GLY 3.4 8.0 + - - -
375D GLN* 2.8 16.6 + - - +
377D GLN* 1.3 77.9 - - - +
379D GLU* 1.3 58.1 + - - +
381D THR* 2.8 11.1 + - - -
382D LEU* 2.8 38.0 + - - +
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Residues in contact with GLU 379 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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298C ALA* 5.5 7.2 - - + -
375D GLN* 2.8 45.8 + - + +
376D LEU* 3.3 18.1 - - + +
378D SER* 1.3 73.0 + - - +
380D VAL* 1.3 62.5 + - + +
382D LEU* 3.8 8.2 - - + +
383D LEU* 2.9 36.8 + - + +
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Residues in contact with VAL 380 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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294C LEU* 4.4 11.9 - - + +
297C THR* 3.9 23.1 - - - +
298C ALA* 4.5 13.0 - - + +
301C LEU* 4.0 11.0 - - + -
376D LEU* 3.0 26.8 + - + +
377D GLN* 3.6 12.3 - - - +
379D GLU* 1.3 75.9 - - - +
381D THR* 1.3 54.6 + - - +
383D LEU* 3.3 2.4 + - - +
384D ARG* 2.6 69.6 + - + +
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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